Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1 | /* |
Chien Tung | fa6c87d | 2009-12-09 15:21:56 -0800 | [diff] [blame] | 2 | * Copyright (c) 2006 - 2009 Intel Corporation. All rights reserved. |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3 | * |
| 4 | * This software is available to you under a choice of one of two |
| 5 | * licenses. You may choose to be licensed under the terms of the GNU |
| 6 | * General Public License (GPL) Version 2, available from the file |
| 7 | * COPYING in the main directory of this source tree, or the |
| 8 | * OpenIB.org BSD license below: |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or |
| 11 | * without modification, are permitted provided that the following |
| 12 | * conditions are met: |
| 13 | * |
| 14 | * - Redistributions of source code must retain the above |
| 15 | * copyright notice, this list of conditions and the following |
| 16 | * disclaimer. |
| 17 | * |
| 18 | * - Redistributions in binary form must reproduce the above |
| 19 | * copyright notice, this list of conditions and the following |
| 20 | * disclaimer in the documentation and/or other materials |
| 21 | * provided with the distribution. |
| 22 | * |
| 23 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 24 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 25 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 26 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 27 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 28 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 29 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 30 | * SOFTWARE. |
| 31 | * |
| 32 | */ |
| 33 | |
| 34 | |
| 35 | #define TCPOPT_TIMESTAMP 8 |
| 36 | |
Arun Sharma | 6006349 | 2011-07-26 16:09:06 -0700 | [diff] [blame] | 37 | #include <linux/atomic.h> |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 38 | #include <linux/skbuff.h> |
| 39 | #include <linux/ip.h> |
| 40 | #include <linux/tcp.h> |
| 41 | #include <linux/init.h> |
| 42 | #include <linux/if_arp.h> |
Chien Tung | f2b2b59 | 2008-03-20 19:55:30 -0500 | [diff] [blame] | 43 | #include <linux/if_vlan.h> |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 44 | #include <linux/notifier.h> |
| 45 | #include <linux/net.h> |
| 46 | #include <linux/types.h> |
| 47 | #include <linux/timer.h> |
| 48 | #include <linux/time.h> |
| 49 | #include <linux/delay.h> |
| 50 | #include <linux/etherdevice.h> |
| 51 | #include <linux/netdevice.h> |
| 52 | #include <linux/random.h> |
| 53 | #include <linux/list.h> |
| 54 | #include <linux/threads.h> |
Faisal Latif | d2fa9b2 | 2009-12-09 15:54:28 -0800 | [diff] [blame] | 55 | #include <linux/highmem.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 56 | #include <linux/slab.h> |
Bob Sharp | 7191a0a | 2008-10-03 12:21:19 -0700 | [diff] [blame] | 57 | #include <net/arp.h> |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 58 | #include <net/neighbour.h> |
| 59 | #include <net/route.h> |
| 60 | #include <net/ip_fib.h> |
Faisal Latif | c11470f | 2009-04-27 13:38:31 -0700 | [diff] [blame] | 61 | #include <net/tcp.h> |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 62 | |
| 63 | #include "nes.h" |
| 64 | |
| 65 | u32 cm_packets_sent; |
| 66 | u32 cm_packets_bounced; |
| 67 | u32 cm_packets_dropped; |
| 68 | u32 cm_packets_retrans; |
| 69 | u32 cm_packets_created; |
| 70 | u32 cm_packets_received; |
Faisal Latif | 6e10d2e | 2010-02-12 19:55:03 +0000 | [diff] [blame] | 71 | atomic_t cm_listens_created; |
| 72 | atomic_t cm_listens_destroyed; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 73 | u32 cm_backlog_drops; |
| 74 | atomic_t cm_loopbacks; |
| 75 | atomic_t cm_nodes_created; |
| 76 | atomic_t cm_nodes_destroyed; |
| 77 | atomic_t cm_accel_dropped_pkts; |
| 78 | atomic_t cm_resets_recvd; |
| 79 | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 80 | static inline int mini_cm_accelerated(struct nes_cm_core *, struct nes_cm_node *); |
| 81 | static struct nes_cm_listener *mini_cm_listen(struct nes_cm_core *, struct nes_vnic *, struct nes_cm_info *); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 82 | static int mini_cm_del_listen(struct nes_cm_core *, struct nes_cm_listener *); |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 83 | static struct nes_cm_node *mini_cm_connect(struct nes_cm_core *, struct nes_vnic *, u16, void *, struct nes_cm_info *); |
Roland Dreier | 1a855fb | 2008-04-16 21:01:09 -0700 | [diff] [blame] | 84 | static int mini_cm_close(struct nes_cm_core *, struct nes_cm_node *); |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 85 | static int mini_cm_accept(struct nes_cm_core *, struct nes_cm_node *); |
| 86 | static int mini_cm_reject(struct nes_cm_core *, struct nes_cm_node *); |
| 87 | static int mini_cm_recv_pkt(struct nes_cm_core *, struct nes_vnic *, struct sk_buff *); |
Roland Dreier | 1a855fb | 2008-04-16 21:01:09 -0700 | [diff] [blame] | 88 | static int mini_cm_dealloc_core(struct nes_cm_core *); |
| 89 | static int mini_cm_get(struct nes_cm_core *); |
| 90 | static int mini_cm_set(struct nes_cm_core *, u32, u32); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 91 | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 92 | static void form_cm_frame(struct sk_buff *, struct nes_cm_node *, void *, u32, void *, u32, u8); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 93 | static int add_ref_cm_node(struct nes_cm_node *); |
| 94 | static int rem_ref_cm_node(struct nes_cm_core *, struct nes_cm_node *); |
| 95 | |
Roland Dreier | 1a855fb | 2008-04-16 21:01:09 -0700 | [diff] [blame] | 96 | static int nes_cm_disconn_true(struct nes_qp *); |
| 97 | static int nes_cm_post_event(struct nes_cm_event *event); |
| 98 | static int nes_disconnect(struct nes_qp *nesqp, int abrupt); |
| 99 | static void nes_disconnect_worker(struct work_struct *work); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 100 | |
| 101 | static int send_mpa_request(struct nes_cm_node *, struct sk_buff *); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 102 | static int send_mpa_reject(struct nes_cm_node *); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 103 | static int send_syn(struct nes_cm_node *, u32, struct sk_buff *); |
| 104 | static int send_reset(struct nes_cm_node *, struct sk_buff *); |
| 105 | static int send_ack(struct nes_cm_node *cm_node, struct sk_buff *skb); |
Roland Dreier | 1a855fb | 2008-04-16 21:01:09 -0700 | [diff] [blame] | 106 | static int send_fin(struct nes_cm_node *cm_node, struct sk_buff *skb); |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 107 | static void process_packet(struct nes_cm_node *, struct sk_buff *, struct nes_cm_core *); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 108 | |
| 109 | static void active_open_err(struct nes_cm_node *, struct sk_buff *, int); |
| 110 | static void passive_open_err(struct nes_cm_node *, struct sk_buff *, int); |
| 111 | static void cleanup_retrans_entry(struct nes_cm_node *); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 112 | static void handle_rcv_mpa(struct nes_cm_node *, struct sk_buff *); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 113 | static void free_retrans_entry(struct nes_cm_node *cm_node); |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 114 | static int handle_tcp_options(struct nes_cm_node *cm_node, struct tcphdr *tcph, struct sk_buff *skb, int optionsize, int passive); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 115 | |
| 116 | /* CM event handler functions */ |
| 117 | static void cm_event_connected(struct nes_cm_event *); |
| 118 | static void cm_event_connect_error(struct nes_cm_event *); |
| 119 | static void cm_event_reset(struct nes_cm_event *); |
| 120 | static void cm_event_mpa_req(struct nes_cm_event *); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 121 | static void cm_event_mpa_reject(struct nes_cm_event *); |
| 122 | static void handle_recv_entry(struct nes_cm_node *cm_node, u32 rem_node); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 123 | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 124 | /* MPA build functions */ |
| 125 | static int cm_build_mpa_frame(struct nes_cm_node *, u8 **, u16 *, u8 *, u8); |
| 126 | static void build_mpa_v2(struct nes_cm_node *, void *, u8); |
| 127 | static void build_mpa_v1(struct nes_cm_node *, void *, u8); |
| 128 | static void build_rdma0_msg(struct nes_cm_node *, struct nes_qp **); |
| 129 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 130 | static void print_core(struct nes_cm_core *core); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 131 | |
| 132 | /* External CM API Interface */ |
| 133 | /* instance of function pointers for client API */ |
| 134 | /* set address of this instance to cm_core->cm_ops at cm_core alloc */ |
| 135 | static struct nes_cm_ops nes_cm_api = { |
| 136 | mini_cm_accelerated, |
| 137 | mini_cm_listen, |
| 138 | mini_cm_del_listen, |
| 139 | mini_cm_connect, |
| 140 | mini_cm_close, |
| 141 | mini_cm_accept, |
| 142 | mini_cm_reject, |
| 143 | mini_cm_recv_pkt, |
| 144 | mini_cm_dealloc_core, |
| 145 | mini_cm_get, |
| 146 | mini_cm_set |
| 147 | }; |
| 148 | |
Roland Dreier | 1a855fb | 2008-04-16 21:01:09 -0700 | [diff] [blame] | 149 | static struct nes_cm_core *g_cm_core; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 150 | |
| 151 | atomic_t cm_connects; |
| 152 | atomic_t cm_accepts; |
| 153 | atomic_t cm_disconnects; |
| 154 | atomic_t cm_closes; |
| 155 | atomic_t cm_connecteds; |
| 156 | atomic_t cm_connect_reqs; |
| 157 | atomic_t cm_rejects; |
| 158 | |
| 159 | |
| 160 | /** |
| 161 | * create_event |
| 162 | */ |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 163 | static struct nes_cm_event *create_event(struct nes_cm_node * cm_node, |
| 164 | enum nes_cm_event_type type) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 165 | { |
| 166 | struct nes_cm_event *event; |
| 167 | |
| 168 | if (!cm_node->cm_id) |
| 169 | return NULL; |
| 170 | |
| 171 | /* allocate an empty event */ |
| 172 | event = kzalloc(sizeof(*event), GFP_ATOMIC); |
| 173 | |
| 174 | if (!event) |
| 175 | return NULL; |
| 176 | |
| 177 | event->type = type; |
| 178 | event->cm_node = cm_node; |
| 179 | event->cm_info.rem_addr = cm_node->rem_addr; |
| 180 | event->cm_info.loc_addr = cm_node->loc_addr; |
| 181 | event->cm_info.rem_port = cm_node->rem_port; |
| 182 | event->cm_info.loc_port = cm_node->loc_port; |
| 183 | event->cm_info.cm_id = cm_node->cm_id; |
| 184 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 185 | nes_debug(NES_DBG_CM, "cm_node=%p Created event=%p, type=%u, " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 186 | "dst_addr=%08x[%x], src_addr=%08x[%x]\n", |
| 187 | cm_node, event, type, event->cm_info.loc_addr, |
| 188 | event->cm_info.loc_port, event->cm_info.rem_addr, |
| 189 | event->cm_info.rem_port); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 190 | |
| 191 | nes_cm_post_event(event); |
| 192 | return event; |
| 193 | } |
| 194 | |
| 195 | |
| 196 | /** |
| 197 | * send_mpa_request |
| 198 | */ |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 199 | static int send_mpa_request(struct nes_cm_node *cm_node, struct sk_buff *skb) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 200 | { |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 201 | u8 start_addr = 0; |
| 202 | u8 *start_ptr = &start_addr; |
| 203 | u8 **start_buff = &start_ptr; |
| 204 | u16 buff_len = 0; |
| 205 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 206 | if (!skb) { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 207 | nes_debug(NES_DBG_CM, "skb set to NULL\n"); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 208 | return -1; |
| 209 | } |
| 210 | |
| 211 | /* send an MPA Request frame */ |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 212 | cm_build_mpa_frame(cm_node, start_buff, &buff_len, NULL, MPA_KEY_REQUEST); |
| 213 | form_cm_frame(skb, cm_node, NULL, 0, *start_buff, buff_len, SET_ACK); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 214 | |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 215 | return schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0); |
| 216 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 217 | |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 218 | |
| 219 | |
| 220 | static int send_mpa_reject(struct nes_cm_node *cm_node) |
| 221 | { |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 222 | struct sk_buff *skb = NULL; |
| 223 | u8 start_addr = 0; |
| 224 | u8 *start_ptr = &start_addr; |
| 225 | u8 **start_buff = &start_ptr; |
| 226 | u16 buff_len = 0; |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 227 | |
| 228 | skb = dev_alloc_skb(MAX_CM_BUFFER); |
| 229 | if (!skb) { |
| 230 | nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); |
| 231 | return -ENOMEM; |
| 232 | } |
| 233 | |
| 234 | /* send an MPA reject frame */ |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 235 | cm_build_mpa_frame(cm_node, start_buff, &buff_len, NULL, MPA_KEY_REPLY); |
| 236 | form_cm_frame(skb, cm_node, NULL, 0, *start_buff, buff_len, SET_ACK | SET_FIN); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 237 | |
| 238 | cm_node->state = NES_CM_STATE_FIN_WAIT1; |
| 239 | return schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 240 | } |
| 241 | |
| 242 | |
| 243 | /** |
| 244 | * recv_mpa - process a received TCP pkt, we are expecting an |
| 245 | * IETF MPA frame |
| 246 | */ |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 247 | static int parse_mpa(struct nes_cm_node *cm_node, u8 *buffer, u32 *type, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 248 | u32 len) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 249 | { |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 250 | struct ietf_mpa_v1 *mpa_frame; |
| 251 | struct ietf_mpa_v2 *mpa_v2_frame; |
| 252 | struct ietf_rtr_msg *rtr_msg; |
| 253 | int mpa_hdr_len; |
| 254 | int priv_data_len; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 255 | |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 256 | *type = NES_MPA_REQUEST_ACCEPT; |
| 257 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 258 | /* assume req frame is in tcp data payload */ |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 259 | if (len < sizeof(struct ietf_mpa_v1)) { |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 260 | nes_debug(NES_DBG_CM, "The received ietf buffer was too small (%x)\n", len); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 261 | return -EINVAL; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 262 | } |
| 263 | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 264 | /* points to the beginning of the frame, which could be MPA V1 or V2 */ |
| 265 | mpa_frame = (struct ietf_mpa_v1 *)buffer; |
| 266 | mpa_hdr_len = sizeof(struct ietf_mpa_v1); |
| 267 | priv_data_len = ntohs(mpa_frame->priv_data_len); |
| 268 | |
Faisal Latif | 1cf078c | 2009-12-09 15:53:54 -0800 | [diff] [blame] | 269 | /* make sure mpa private data len is less than 512 bytes */ |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 270 | if (priv_data_len > IETF_MAX_PRIV_DATA_LEN) { |
Faisal Latif | 1cf078c | 2009-12-09 15:53:54 -0800 | [diff] [blame] | 271 | nes_debug(NES_DBG_CM, "The received Length of Private" |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 272 | " Data field exceeds 512 octets\n"); |
Faisal Latif | 1cf078c | 2009-12-09 15:53:54 -0800 | [diff] [blame] | 273 | return -EINVAL; |
| 274 | } |
| 275 | /* |
| 276 | * make sure MPA receiver interoperate with the |
| 277 | * received MPA version and MPA key information |
| 278 | * |
| 279 | */ |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 280 | if (mpa_frame->rev != IETF_MPA_V1 && mpa_frame->rev != IETF_MPA_V2) { |
Faisal Latif | 1cf078c | 2009-12-09 15:53:54 -0800 | [diff] [blame] | 281 | nes_debug(NES_DBG_CM, "The received mpa version" |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 282 | " is not supported\n"); |
Faisal Latif | 1cf078c | 2009-12-09 15:53:54 -0800 | [diff] [blame] | 283 | return -EINVAL; |
| 284 | } |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 285 | /* |
| 286 | * backwards compatibility only |
| 287 | */ |
| 288 | if (mpa_frame->rev > cm_node->mpa_frame_rev) { |
| 289 | nes_debug(NES_DBG_CM, "The received mpa version" |
| 290 | " can not be interoperated\n"); |
| 291 | return -EINVAL; |
| 292 | } else { |
| 293 | cm_node->mpa_frame_rev = mpa_frame->rev; |
| 294 | } |
| 295 | |
Faisal Latif | 1cf078c | 2009-12-09 15:53:54 -0800 | [diff] [blame] | 296 | if (cm_node->state != NES_CM_STATE_MPAREQ_SENT) { |
| 297 | if (memcmp(mpa_frame->key, IEFT_MPA_KEY_REQ, IETF_MPA_KEY_SIZE)) { |
| 298 | nes_debug(NES_DBG_CM, "Unexpected MPA Key received \n"); |
| 299 | return -EINVAL; |
| 300 | } |
| 301 | } else { |
| 302 | if (memcmp(mpa_frame->key, IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE)) { |
| 303 | nes_debug(NES_DBG_CM, "Unexpected MPA Key received \n"); |
| 304 | return -EINVAL; |
| 305 | } |
| 306 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 307 | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 308 | |
| 309 | if (priv_data_len + mpa_hdr_len != len) { |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 310 | nes_debug(NES_DBG_CM, "The received ietf buffer was not right" |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 311 | " complete (%x + %x != %x)\n", |
| 312 | priv_data_len, mpa_hdr_len, len); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 313 | return -EINVAL; |
| 314 | } |
| 315 | /* make sure it does not exceed the max size */ |
| 316 | if (len > MAX_CM_BUFFER) { |
| 317 | nes_debug(NES_DBG_CM, "The received ietf buffer was too large" |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 318 | " (%x + %x != %x)\n", |
| 319 | priv_data_len, mpa_hdr_len, len); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 320 | return -EINVAL; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 321 | } |
| 322 | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 323 | cm_node->mpa_frame_size = priv_data_len; |
| 324 | |
| 325 | switch (mpa_frame->rev) { |
| 326 | case IETF_MPA_V2: { |
| 327 | u16 ird_size; |
| 328 | u16 ord_size; |
| 329 | mpa_v2_frame = (struct ietf_mpa_v2 *)buffer; |
| 330 | mpa_hdr_len += IETF_RTR_MSG_SIZE; |
| 331 | cm_node->mpa_frame_size -= IETF_RTR_MSG_SIZE; |
| 332 | rtr_msg = &mpa_v2_frame->rtr_msg; |
| 333 | |
| 334 | /* parse rtr message */ |
| 335 | rtr_msg->ctrl_ird = ntohs(rtr_msg->ctrl_ird); |
| 336 | rtr_msg->ctrl_ord = ntohs(rtr_msg->ctrl_ord); |
| 337 | ird_size = rtr_msg->ctrl_ird & IETF_NO_IRD_ORD; |
| 338 | ord_size = rtr_msg->ctrl_ord & IETF_NO_IRD_ORD; |
| 339 | |
| 340 | if (!(rtr_msg->ctrl_ird & IETF_PEER_TO_PEER)) { |
| 341 | /* send reset */ |
| 342 | return -EINVAL; |
| 343 | } |
| 344 | |
| 345 | if (cm_node->state != NES_CM_STATE_MPAREQ_SENT) { |
| 346 | /* responder */ |
| 347 | if (cm_node->ord_size > ird_size) |
| 348 | cm_node->ord_size = ird_size; |
| 349 | } else { |
| 350 | /* initiator */ |
| 351 | if (cm_node->ord_size > ird_size) |
| 352 | cm_node->ord_size = ird_size; |
| 353 | |
| 354 | if (cm_node->ird_size < ord_size) { |
| 355 | /* no resources available */ |
| 356 | /* send terminate message */ |
| 357 | return -EINVAL; |
| 358 | } |
| 359 | } |
| 360 | |
| 361 | if (rtr_msg->ctrl_ord & IETF_RDMA0_READ) { |
| 362 | cm_node->send_rdma0_op = SEND_RDMA_READ_ZERO; |
| 363 | } else if (rtr_msg->ctrl_ord & IETF_RDMA0_WRITE) { |
| 364 | cm_node->send_rdma0_op = SEND_RDMA_WRITE_ZERO; |
| 365 | } else { /* Not supported RDMA0 operation */ |
| 366 | return -EINVAL; |
| 367 | } |
| 368 | break; |
| 369 | } |
| 370 | case IETF_MPA_V1: |
| 371 | default: |
| 372 | break; |
| 373 | } |
| 374 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 375 | /* copy entire MPA frame to our cm_node's frame */ |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 376 | memcpy(cm_node->mpa_frame_buf, buffer + mpa_hdr_len, cm_node->mpa_frame_size); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 377 | |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 378 | if (mpa_frame->flags & IETF_MPA_FLAGS_REJECT) |
| 379 | *type = NES_MPA_REQUEST_REJECT; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 380 | return 0; |
| 381 | } |
| 382 | |
| 383 | |
| 384 | /** |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 385 | * form_cm_frame - get a free packet and build empty frame Use |
| 386 | * node info to build. |
| 387 | */ |
Chien Tung | 6098d10 | 2008-11-21 20:51:01 -0600 | [diff] [blame] | 388 | static void form_cm_frame(struct sk_buff *skb, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 389 | struct nes_cm_node *cm_node, void *options, u32 optionsize, |
| 390 | void *data, u32 datasize, u8 flags) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 391 | { |
| 392 | struct tcphdr *tcph; |
| 393 | struct iphdr *iph; |
| 394 | struct ethhdr *ethh; |
| 395 | u8 *buf; |
| 396 | u16 packetsize = sizeof(*iph); |
| 397 | |
| 398 | packetsize += sizeof(*tcph); |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 399 | packetsize += optionsize + datasize; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 400 | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 401 | skb_trim(skb, 0); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 402 | memset(skb->data, 0x00, ETH_HLEN + sizeof(*iph) + sizeof(*tcph)); |
| 403 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 404 | buf = skb_put(skb, packetsize + ETH_HLEN); |
| 405 | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 406 | ethh = (struct ethhdr *)buf; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 407 | buf += ETH_HLEN; |
| 408 | |
| 409 | iph = (struct iphdr *)buf; |
| 410 | buf += sizeof(*iph); |
| 411 | tcph = (struct tcphdr *)buf; |
| 412 | skb_reset_mac_header(skb); |
| 413 | skb_set_network_header(skb, ETH_HLEN); |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 414 | skb_set_transport_header(skb, ETH_HLEN + sizeof(*iph)); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 415 | buf += sizeof(*tcph); |
| 416 | |
| 417 | skb->ip_summed = CHECKSUM_PARTIAL; |
| 418 | skb->protocol = htons(0x800); |
| 419 | skb->data_len = 0; |
| 420 | skb->mac_len = ETH_HLEN; |
| 421 | |
| 422 | memcpy(ethh->h_dest, cm_node->rem_mac, ETH_ALEN); |
| 423 | memcpy(ethh->h_source, cm_node->loc_mac, ETH_ALEN); |
| 424 | ethh->h_proto = htons(0x0800); |
| 425 | |
| 426 | iph->version = IPVERSION; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 427 | iph->ihl = 5; /* 5 * 4Byte words, IP headr len */ |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 428 | iph->tos = 0; |
| 429 | iph->tot_len = htons(packetsize); |
| 430 | iph->id = htons(++cm_node->tcp_cntxt.loc_id); |
| 431 | |
| 432 | iph->frag_off = htons(0x4000); |
| 433 | iph->ttl = 0x40; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 434 | iph->protocol = 0x06; /* IPPROTO_TCP */ |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 435 | |
| 436 | iph->saddr = htonl(cm_node->loc_addr); |
| 437 | iph->daddr = htonl(cm_node->rem_addr); |
| 438 | |
| 439 | tcph->source = htons(cm_node->loc_port); |
| 440 | tcph->dest = htons(cm_node->rem_port); |
| 441 | tcph->seq = htonl(cm_node->tcp_cntxt.loc_seq_num); |
| 442 | |
| 443 | if (flags & SET_ACK) { |
| 444 | cm_node->tcp_cntxt.loc_ack_num = cm_node->tcp_cntxt.rcv_nxt; |
| 445 | tcph->ack_seq = htonl(cm_node->tcp_cntxt.loc_ack_num); |
| 446 | tcph->ack = 1; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 447 | } else { |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 448 | tcph->ack_seq = 0; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 449 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 450 | |
| 451 | if (flags & SET_SYN) { |
| 452 | cm_node->tcp_cntxt.loc_seq_num++; |
| 453 | tcph->syn = 1; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 454 | } else { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 455 | cm_node->tcp_cntxt.loc_seq_num += datasize; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 456 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 457 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 458 | if (flags & SET_FIN) { |
| 459 | cm_node->tcp_cntxt.loc_seq_num++; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 460 | tcph->fin = 1; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 461 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 462 | |
| 463 | if (flags & SET_RST) |
| 464 | tcph->rst = 1; |
| 465 | |
| 466 | tcph->doff = (u16)((sizeof(*tcph) + optionsize + 3) >> 2); |
| 467 | tcph->window = htons(cm_node->tcp_cntxt.rcv_wnd); |
| 468 | tcph->urg_ptr = 0; |
| 469 | if (optionsize) |
| 470 | memcpy(buf, options, optionsize); |
| 471 | buf += optionsize; |
| 472 | if (datasize) |
| 473 | memcpy(buf, data, datasize); |
| 474 | |
| 475 | skb_shinfo(skb)->nr_frags = 0; |
| 476 | cm_packets_created++; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 477 | } |
| 478 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 479 | /** |
| 480 | * print_core - dump a cm core |
| 481 | */ |
| 482 | static void print_core(struct nes_cm_core *core) |
| 483 | { |
| 484 | nes_debug(NES_DBG_CM, "---------------------------------------------\n"); |
| 485 | nes_debug(NES_DBG_CM, "CM Core -- (core = %p )\n", core); |
| 486 | if (!core) |
| 487 | return; |
| 488 | nes_debug(NES_DBG_CM, "---------------------------------------------\n"); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 489 | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 490 | nes_debug(NES_DBG_CM, "State : %u \n", core->state); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 491 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 492 | nes_debug(NES_DBG_CM, "Listen Nodes : %u \n", atomic_read(&core->listen_node_cnt)); |
| 493 | nes_debug(NES_DBG_CM, "Active Nodes : %u \n", atomic_read(&core->node_cnt)); |
| 494 | |
| 495 | nes_debug(NES_DBG_CM, "core : %p \n", core); |
| 496 | |
| 497 | nes_debug(NES_DBG_CM, "-------------- end core ---------------\n"); |
| 498 | } |
| 499 | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 500 | /** |
| 501 | * cm_build_mpa_frame - build a MPA V1 frame or MPA V2 frame |
| 502 | */ |
| 503 | static int cm_build_mpa_frame(struct nes_cm_node *cm_node, u8 **start_buff, |
| 504 | u16 *buff_len, u8 *pci_mem, u8 mpa_key) |
| 505 | { |
| 506 | int ret = 0; |
| 507 | |
| 508 | *start_buff = (pci_mem) ? pci_mem : &cm_node->mpa_frame_buf[0]; |
| 509 | |
| 510 | switch (cm_node->mpa_frame_rev) { |
| 511 | case IETF_MPA_V1: |
| 512 | *start_buff = (u8 *)*start_buff + sizeof(struct ietf_rtr_msg); |
| 513 | *buff_len = sizeof(struct ietf_mpa_v1) + cm_node->mpa_frame_size; |
| 514 | build_mpa_v1(cm_node, *start_buff, mpa_key); |
| 515 | break; |
| 516 | case IETF_MPA_V2: |
| 517 | *buff_len = sizeof(struct ietf_mpa_v2) + cm_node->mpa_frame_size; |
| 518 | build_mpa_v2(cm_node, *start_buff, mpa_key); |
| 519 | break; |
| 520 | default: |
| 521 | ret = -EINVAL; |
| 522 | } |
| 523 | return ret; |
| 524 | } |
| 525 | |
| 526 | /** |
| 527 | * build_mpa_v2 - build a MPA V2 frame |
| 528 | */ |
| 529 | static void build_mpa_v2(struct nes_cm_node *cm_node, |
| 530 | void *start_addr, u8 mpa_key) |
| 531 | { |
| 532 | struct ietf_mpa_v2 *mpa_frame = (struct ietf_mpa_v2 *)start_addr; |
| 533 | struct ietf_rtr_msg *rtr_msg = &mpa_frame->rtr_msg; |
| 534 | |
| 535 | /* initialize the upper 5 bytes of the frame */ |
| 536 | build_mpa_v1(cm_node, start_addr, mpa_key); |
| 537 | mpa_frame->flags |= IETF_MPA_V2_FLAG; /* set a bit to indicate MPA V2 */ |
| 538 | mpa_frame->priv_data_len += htons(IETF_RTR_MSG_SIZE); |
| 539 | |
| 540 | /* initialize RTR msg */ |
| 541 | rtr_msg->ctrl_ird = (cm_node->ird_size > IETF_NO_IRD_ORD) ? |
| 542 | IETF_NO_IRD_ORD : cm_node->ird_size; |
| 543 | rtr_msg->ctrl_ord = (cm_node->ord_size > IETF_NO_IRD_ORD) ? |
| 544 | IETF_NO_IRD_ORD : cm_node->ord_size; |
| 545 | |
| 546 | rtr_msg->ctrl_ird |= IETF_PEER_TO_PEER; |
| 547 | rtr_msg->ctrl_ird |= IETF_FLPDU_ZERO_LEN; |
| 548 | |
| 549 | switch (mpa_key) { |
| 550 | case MPA_KEY_REQUEST: |
| 551 | rtr_msg->ctrl_ord |= IETF_RDMA0_WRITE; |
| 552 | rtr_msg->ctrl_ord |= IETF_RDMA0_READ; |
| 553 | break; |
| 554 | case MPA_KEY_REPLY: |
| 555 | switch (cm_node->send_rdma0_op) { |
| 556 | case SEND_RDMA_WRITE_ZERO: |
| 557 | rtr_msg->ctrl_ord |= IETF_RDMA0_WRITE; |
| 558 | break; |
| 559 | case SEND_RDMA_READ_ZERO: |
| 560 | rtr_msg->ctrl_ord |= IETF_RDMA0_READ; |
| 561 | break; |
| 562 | } |
| 563 | } |
| 564 | rtr_msg->ctrl_ird = htons(rtr_msg->ctrl_ird); |
| 565 | rtr_msg->ctrl_ord = htons(rtr_msg->ctrl_ord); |
| 566 | } |
| 567 | |
| 568 | /** |
| 569 | * build_mpa_v1 - build a MPA V1 frame |
| 570 | */ |
| 571 | static void build_mpa_v1(struct nes_cm_node *cm_node, void *start_addr, u8 mpa_key) |
| 572 | { |
| 573 | struct ietf_mpa_v1 *mpa_frame = (struct ietf_mpa_v1 *)start_addr; |
| 574 | |
| 575 | switch (mpa_key) { |
| 576 | case MPA_KEY_REQUEST: |
| 577 | memcpy(mpa_frame->key, IEFT_MPA_KEY_REQ, IETF_MPA_KEY_SIZE); |
| 578 | break; |
| 579 | case MPA_KEY_REPLY: |
| 580 | memcpy(mpa_frame->key, IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE); |
| 581 | break; |
| 582 | } |
| 583 | mpa_frame->flags = IETF_MPA_FLAGS_CRC; |
| 584 | mpa_frame->rev = cm_node->mpa_frame_rev; |
| 585 | mpa_frame->priv_data_len = htons(cm_node->mpa_frame_size); |
| 586 | } |
| 587 | |
| 588 | static void build_rdma0_msg(struct nes_cm_node *cm_node, struct nes_qp **nesqp_addr) |
| 589 | { |
| 590 | u64 u64temp; |
| 591 | struct nes_qp *nesqp = *nesqp_addr; |
| 592 | struct nes_hw_qp_wqe *wqe = &nesqp->hwqp.sq_vbase[0]; |
| 593 | |
| 594 | u64temp = (unsigned long)nesqp; |
| 595 | u64temp |= NES_SW_CONTEXT_ALIGN >> 1; |
| 596 | set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX, u64temp); |
| 597 | |
| 598 | wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_LOW_IDX] = 0; |
| 599 | wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_HIGH_IDX] = 0; |
| 600 | |
| 601 | switch (cm_node->send_rdma0_op) { |
| 602 | case SEND_RDMA_WRITE_ZERO: |
| 603 | nes_debug(NES_DBG_CM, "Sending first write.\n"); |
| 604 | wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = |
| 605 | cpu_to_le32(NES_IWARP_SQ_OP_RDMAW); |
| 606 | wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX] = 0; |
| 607 | wqe->wqe_words[NES_IWARP_SQ_WQE_LENGTH0_IDX] = 0; |
| 608 | wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = 0; |
| 609 | break; |
| 610 | |
| 611 | case SEND_RDMA_READ_ZERO: |
| 612 | default: |
| 613 | if (cm_node->send_rdma0_op != SEND_RDMA_READ_ZERO) { |
| 614 | printk(KERN_ERR "%s[%u]: Unsupported RDMA0 len operation=%u\n", |
| 615 | __func__, __LINE__, cm_node->send_rdma0_op); |
| 616 | WARN_ON(1); |
| 617 | } |
| 618 | nes_debug(NES_DBG_CM, "Sending first rdma operation.\n"); |
| 619 | wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = |
| 620 | cpu_to_le32(NES_IWARP_SQ_OP_RDMAR); |
| 621 | wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX] = 1; |
| 622 | wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_TO_HIGH_IDX] = 0; |
| 623 | wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] = 0; |
| 624 | wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_STAG_IDX] = 1; |
| 625 | wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = 1; |
| 626 | break; |
| 627 | } |
| 628 | |
| 629 | if (nesqp->sq_kmapped) { |
| 630 | nesqp->sq_kmapped = 0; |
| 631 | kunmap(nesqp->page); |
| 632 | } |
| 633 | |
| 634 | /*use the reserved spot on the WQ for the extra first WQE*/ |
| 635 | nesqp->nesqp_context->ird_ord_sizes &= cpu_to_le32(~(NES_QPCONTEXT_ORDIRD_LSMM_PRESENT | |
| 636 | NES_QPCONTEXT_ORDIRD_WRPDU | |
| 637 | NES_QPCONTEXT_ORDIRD_ALSMM)); |
| 638 | nesqp->skip_lsmm = 1; |
| 639 | nesqp->hwqp.sq_tail = 0; |
| 640 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 641 | |
| 642 | /** |
| 643 | * schedule_nes_timer |
| 644 | * note - cm_node needs to be protected before calling this. Encase in: |
| 645 | * rem_ref_cm_node(cm_core, cm_node);add_ref_cm_node(cm_node); |
| 646 | */ |
| 647 | int schedule_nes_timer(struct nes_cm_node *cm_node, struct sk_buff *skb, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 648 | enum nes_timer_type type, int send_retrans, |
| 649 | int close_when_complete) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 650 | { |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 651 | unsigned long flags; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 652 | struct nes_cm_core *cm_core = cm_node->cm_core; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 653 | struct nes_timer_entry *new_send; |
| 654 | int ret = 0; |
| 655 | u32 was_timer_set; |
| 656 | |
| 657 | new_send = kzalloc(sizeof(*new_send), GFP_ATOMIC); |
| 658 | if (!new_send) |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 659 | return -ENOMEM; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 660 | |
| 661 | /* new_send->timetosend = currenttime */ |
| 662 | new_send->retrycount = NES_DEFAULT_RETRYS; |
| 663 | new_send->retranscount = NES_DEFAULT_RETRANS; |
| 664 | new_send->skb = skb; |
| 665 | new_send->timetosend = jiffies; |
| 666 | new_send->type = type; |
| 667 | new_send->netdev = cm_node->netdev; |
| 668 | new_send->send_retrans = send_retrans; |
| 669 | new_send->close_when_complete = close_when_complete; |
| 670 | |
| 671 | if (type == NES_TIMER_TYPE_CLOSE) { |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 672 | new_send->timetosend += (HZ / 10); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 673 | if (cm_node->recv_entry) { |
Faisal Latif | 79fc3d7 | 2009-04-08 14:22:20 -0700 | [diff] [blame] | 674 | kfree(new_send); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 675 | WARN_ON(1); |
| 676 | return -EINVAL; |
| 677 | } |
| 678 | cm_node->recv_entry = new_send; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 679 | } |
| 680 | |
| 681 | if (type == NES_TIMER_TYPE_SEND) { |
Roland Dreier | b30db1c | 2008-04-16 21:01:07 -0700 | [diff] [blame] | 682 | new_send->seq_num = ntohl(tcp_hdr(skb)->seq); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 683 | atomic_inc(&new_send->skb->users); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 684 | spin_lock_irqsave(&cm_node->retrans_list_lock, flags); |
| 685 | cm_node->send_entry = new_send; |
| 686 | add_ref_cm_node(cm_node); |
| 687 | spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags); |
| 688 | new_send->timetosend = jiffies + NES_RETRY_TIMEOUT; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 689 | |
| 690 | ret = nes_nic_cm_xmit(new_send->skb, cm_node->netdev); |
| 691 | if (ret != NETDEV_TX_OK) { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 692 | nes_debug(NES_DBG_CM, "Error sending packet %p " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 693 | "(jiffies = %lu)\n", new_send, jiffies); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 694 | new_send->timetosend = jiffies; |
Faisal Latif | 5962c2c | 2009-04-08 14:23:55 -0700 | [diff] [blame] | 695 | ret = NETDEV_TX_OK; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 696 | } else { |
| 697 | cm_packets_sent++; |
| 698 | if (!send_retrans) { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 699 | cleanup_retrans_entry(cm_node); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 700 | if (close_when_complete) |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 701 | rem_ref_cm_node(cm_core, cm_node); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 702 | return ret; |
| 703 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 704 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 705 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 706 | |
| 707 | was_timer_set = timer_pending(&cm_core->tcp_timer); |
| 708 | |
| 709 | if (!was_timer_set) { |
| 710 | cm_core->tcp_timer.expires = new_send->timetosend; |
| 711 | add_timer(&cm_core->tcp_timer); |
| 712 | } |
| 713 | |
| 714 | return ret; |
| 715 | } |
| 716 | |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 717 | static void nes_retrans_expired(struct nes_cm_node *cm_node) |
| 718 | { |
Faisal Latif | 68237a0 | 2009-06-22 22:53:28 -0700 | [diff] [blame] | 719 | struct iw_cm_id *cm_id = cm_node->cm_id; |
Faisal Latif | dae5872 | 2010-08-14 21:04:56 +0000 | [diff] [blame] | 720 | enum nes_cm_node_state state = cm_node->state; |
| 721 | cm_node->state = NES_CM_STATE_CLOSED; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 722 | |
Faisal Latif | dae5872 | 2010-08-14 21:04:56 +0000 | [diff] [blame] | 723 | switch (state) { |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 724 | case NES_CM_STATE_SYN_RCVD: |
| 725 | case NES_CM_STATE_CLOSING: |
| 726 | rem_ref_cm_node(cm_node->cm_core, cm_node); |
| 727 | break; |
| 728 | case NES_CM_STATE_LAST_ACK: |
| 729 | case NES_CM_STATE_FIN_WAIT1: |
Faisal Latif | 68237a0 | 2009-06-22 22:53:28 -0700 | [diff] [blame] | 730 | if (cm_node->cm_id) |
| 731 | cm_id->rem_ref(cm_id); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 732 | send_reset(cm_node, NULL); |
| 733 | break; |
| 734 | default: |
Faisal Latif | 69524e1 | 2009-12-09 15:54:03 -0800 | [diff] [blame] | 735 | add_ref_cm_node(cm_node); |
| 736 | send_reset(cm_node, NULL); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 737 | create_event(cm_node, NES_CM_EVENT_ABORTED); |
| 738 | } |
| 739 | } |
| 740 | |
| 741 | static void handle_recv_entry(struct nes_cm_node *cm_node, u32 rem_node) |
| 742 | { |
| 743 | struct nes_timer_entry *recv_entry = cm_node->recv_entry; |
| 744 | struct iw_cm_id *cm_id = cm_node->cm_id; |
| 745 | struct nes_qp *nesqp; |
| 746 | unsigned long qplockflags; |
| 747 | |
| 748 | if (!recv_entry) |
| 749 | return; |
| 750 | nesqp = (struct nes_qp *)recv_entry->skb; |
| 751 | if (nesqp) { |
| 752 | spin_lock_irqsave(&nesqp->lock, qplockflags); |
| 753 | if (nesqp->cm_id) { |
| 754 | nes_debug(NES_DBG_CM, "QP%u: cm_id = %p, " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 755 | "refcount = %d: HIT A " |
| 756 | "NES_TIMER_TYPE_CLOSE with something " |
| 757 | "to do!!!\n", nesqp->hwqp.qp_id, cm_id, |
| 758 | atomic_read(&nesqp->refcount)); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 759 | nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED; |
| 760 | nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT; |
| 761 | nesqp->ibqp_state = IB_QPS_ERR; |
| 762 | spin_unlock_irqrestore(&nesqp->lock, qplockflags); |
| 763 | nes_cm_disconn(nesqp); |
| 764 | } else { |
| 765 | spin_unlock_irqrestore(&nesqp->lock, qplockflags); |
| 766 | nes_debug(NES_DBG_CM, "QP%u: cm_id = %p, " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 767 | "refcount = %d: HIT A " |
| 768 | "NES_TIMER_TYPE_CLOSE with nothing " |
| 769 | "to do!!!\n", nesqp->hwqp.qp_id, cm_id, |
| 770 | atomic_read(&nesqp->refcount)); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 771 | } |
| 772 | } else if (rem_node) { |
| 773 | /* TIME_WAIT state */ |
| 774 | rem_ref_cm_node(cm_node->cm_core, cm_node); |
| 775 | } |
| 776 | if (cm_node->cm_id) |
| 777 | cm_id->rem_ref(cm_id); |
| 778 | kfree(recv_entry); |
| 779 | cm_node->recv_entry = NULL; |
| 780 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 781 | |
| 782 | /** |
| 783 | * nes_cm_timer_tick |
| 784 | */ |
Roland Dreier | 1a855fb | 2008-04-16 21:01:09 -0700 | [diff] [blame] | 785 | static void nes_cm_timer_tick(unsigned long pass) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 786 | { |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 787 | unsigned long flags; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 788 | unsigned long nexttimeout = jiffies + NES_LONG_TIME; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 789 | struct nes_cm_node *cm_node; |
| 790 | struct nes_timer_entry *send_entry, *recv_entry; |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 791 | struct list_head *list_core_temp; |
| 792 | struct list_head *list_node; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 793 | struct nes_cm_core *cm_core = g_cm_core; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 794 | u32 settimer = 0; |
Faisal Latif | 4e9c390 | 2009-04-27 13:39:36 -0700 | [diff] [blame] | 795 | unsigned long timetosend; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 796 | int ret = NETDEV_TX_OK; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 797 | |
Faisal Latif | 879e5bd | 2008-11-21 20:50:41 -0600 | [diff] [blame] | 798 | struct list_head timer_list; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 799 | |
Faisal Latif | 879e5bd | 2008-11-21 20:50:41 -0600 | [diff] [blame] | 800 | INIT_LIST_HEAD(&timer_list); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 801 | spin_lock_irqsave(&cm_core->ht_lock, flags); |
| 802 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 803 | list_for_each_safe(list_node, list_core_temp, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 804 | &cm_core->connected_nodes) { |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 805 | cm_node = container_of(list_node, struct nes_cm_node, list); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 806 | if ((cm_node->recv_entry) || (cm_node->send_entry)) { |
Faisal Latif | 879e5bd | 2008-11-21 20:50:41 -0600 | [diff] [blame] | 807 | add_ref_cm_node(cm_node); |
| 808 | list_add(&cm_node->timer_entry, &timer_list); |
| 809 | } |
| 810 | } |
| 811 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); |
| 812 | |
| 813 | list_for_each_safe(list_node, list_core_temp, &timer_list) { |
| 814 | cm_node = container_of(list_node, struct nes_cm_node, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 815 | timer_entry); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 816 | recv_entry = cm_node->recv_entry; |
| 817 | |
| 818 | if (recv_entry) { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 819 | if (time_after(recv_entry->timetosend, jiffies)) { |
| 820 | if (nexttimeout > recv_entry->timetosend || |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 821 | !settimer) { |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 822 | nexttimeout = recv_entry->timetosend; |
| 823 | settimer = 1; |
| 824 | } |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 825 | } else { |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 826 | handle_recv_entry(cm_node, 1); |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 827 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 828 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 829 | |
| 830 | spin_lock_irqsave(&cm_node->retrans_list_lock, flags); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 831 | do { |
| 832 | send_entry = cm_node->send_entry; |
| 833 | if (!send_entry) |
Faisal Latif | c5d321e | 2008-11-21 20:50:38 -0600 | [diff] [blame] | 834 | break; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 835 | if (time_after(send_entry->timetosend, jiffies)) { |
| 836 | if (cm_node->state != NES_CM_STATE_TSA) { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 837 | if ((nexttimeout > |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 838 | send_entry->timetosend) || |
| 839 | !settimer) { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 840 | nexttimeout = |
| 841 | send_entry->timetosend; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 842 | settimer = 1; |
| 843 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 844 | } else { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 845 | free_retrans_entry(cm_node); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 846 | } |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 847 | break; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 848 | } |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 849 | |
| 850 | if ((cm_node->state == NES_CM_STATE_TSA) || |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 851 | (cm_node->state == NES_CM_STATE_CLOSED)) { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 852 | free_retrans_entry(cm_node); |
Faisal Latif | c5d321e | 2008-11-21 20:50:38 -0600 | [diff] [blame] | 853 | break; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 854 | } |
| 855 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 856 | if (!send_entry->retranscount || |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 857 | !send_entry->retrycount) { |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 858 | cm_packets_dropped++; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 859 | free_retrans_entry(cm_node); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 860 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 861 | spin_unlock_irqrestore( |
| 862 | &cm_node->retrans_list_lock, flags); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 863 | nes_retrans_expired(cm_node); |
| 864 | cm_node->state = NES_CM_STATE_CLOSED; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 865 | spin_lock_irqsave(&cm_node->retrans_list_lock, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 866 | flags); |
Faisal Latif | c5d321e | 2008-11-21 20:50:38 -0600 | [diff] [blame] | 867 | break; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 868 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 869 | atomic_inc(&send_entry->skb->users); |
| 870 | cm_packets_retrans++; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 871 | nes_debug(NES_DBG_CM, "Retransmitting send_entry %p " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 872 | "for node %p, jiffies = %lu, time to send = " |
| 873 | "%lu, retranscount = %u, send_entry->seq_num = " |
| 874 | "0x%08X, cm_node->tcp_cntxt.rem_ack_num = " |
| 875 | "0x%08X\n", send_entry, cm_node, jiffies, |
| 876 | send_entry->timetosend, |
| 877 | send_entry->retranscount, |
| 878 | send_entry->seq_num, |
| 879 | cm_node->tcp_cntxt.rem_ack_num); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 880 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 881 | spin_unlock_irqrestore(&cm_node->retrans_list_lock, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 882 | flags); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 883 | ret = nes_nic_cm_xmit(send_entry->skb, cm_node->netdev); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 884 | spin_lock_irqsave(&cm_node->retrans_list_lock, flags); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 885 | if (ret != NETDEV_TX_OK) { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 886 | nes_debug(NES_DBG_CM, "rexmit failed for " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 887 | "node=%p\n", cm_node); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 888 | cm_packets_bounced++; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 889 | send_entry->retrycount--; |
| 890 | nexttimeout = jiffies + NES_SHORT_TIME; |
| 891 | settimer = 1; |
Faisal Latif | c5d321e | 2008-11-21 20:50:38 -0600 | [diff] [blame] | 892 | break; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 893 | } else { |
| 894 | cm_packets_sent++; |
| 895 | } |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 896 | nes_debug(NES_DBG_CM, "Packet Sent: retrans count = " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 897 | "%u, retry count = %u.\n", |
| 898 | send_entry->retranscount, |
| 899 | send_entry->retrycount); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 900 | if (send_entry->send_retrans) { |
| 901 | send_entry->retranscount--; |
Faisal Latif | 4e9c390 | 2009-04-27 13:39:36 -0700 | [diff] [blame] | 902 | timetosend = (NES_RETRY_TIMEOUT << |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 903 | (NES_DEFAULT_RETRANS - send_entry->retranscount)); |
Faisal Latif | 4e9c390 | 2009-04-27 13:39:36 -0700 | [diff] [blame] | 904 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 905 | send_entry->timetosend = jiffies + |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 906 | min(timetosend, NES_MAX_TIMEOUT); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 907 | if (nexttimeout > send_entry->timetosend || |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 908 | !settimer) { |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 909 | nexttimeout = send_entry->timetosend; |
| 910 | settimer = 1; |
| 911 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 912 | } else { |
| 913 | int close_when_complete; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 914 | close_when_complete = |
| 915 | send_entry->close_when_complete; |
| 916 | nes_debug(NES_DBG_CM, "cm_node=%p state=%d\n", |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 917 | cm_node, cm_node->state); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 918 | free_retrans_entry(cm_node); |
| 919 | if (close_when_complete) |
| 920 | rem_ref_cm_node(cm_node->cm_core, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 921 | cm_node); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 922 | } |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 923 | } while (0); |
| 924 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 925 | spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 926 | rem_ref_cm_node(cm_node->cm_core, cm_node); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 927 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 928 | |
| 929 | if (settimer) { |
| 930 | if (!timer_pending(&cm_core->tcp_timer)) { |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 931 | cm_core->tcp_timer.expires = nexttimeout; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 932 | add_timer(&cm_core->tcp_timer); |
| 933 | } |
| 934 | } |
| 935 | } |
| 936 | |
| 937 | |
| 938 | /** |
| 939 | * send_syn |
| 940 | */ |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 941 | static int send_syn(struct nes_cm_node *cm_node, u32 sendack, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 942 | struct sk_buff *skb) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 943 | { |
| 944 | int ret; |
| 945 | int flags = SET_SYN; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 946 | char optionsbuffer[sizeof(struct option_mss) + |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 947 | sizeof(struct option_windowscale) + sizeof(struct option_base) + |
| 948 | TCP_OPTIONS_PADDING]; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 949 | |
| 950 | int optionssize = 0; |
| 951 | /* Sending MSS option */ |
| 952 | union all_known_options *options; |
| 953 | |
| 954 | if (!cm_node) |
| 955 | return -EINVAL; |
| 956 | |
| 957 | options = (union all_known_options *)&optionsbuffer[optionssize]; |
| 958 | options->as_mss.optionnum = OPTION_NUMBER_MSS; |
| 959 | options->as_mss.length = sizeof(struct option_mss); |
| 960 | options->as_mss.mss = htons(cm_node->tcp_cntxt.mss); |
| 961 | optionssize += sizeof(struct option_mss); |
| 962 | |
| 963 | options = (union all_known_options *)&optionsbuffer[optionssize]; |
| 964 | options->as_windowscale.optionnum = OPTION_NUMBER_WINDOW_SCALE; |
| 965 | options->as_windowscale.length = sizeof(struct option_windowscale); |
| 966 | options->as_windowscale.shiftcount = cm_node->tcp_cntxt.rcv_wscale; |
| 967 | optionssize += sizeof(struct option_windowscale); |
| 968 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 969 | if (sendack && !(NES_DRV_OPT_SUPRESS_OPTION_BC & nes_drv_opt)) { |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 970 | options = (union all_known_options *)&optionsbuffer[optionssize]; |
| 971 | options->as_base.optionnum = OPTION_NUMBER_WRITE0; |
| 972 | options->as_base.length = sizeof(struct option_base); |
| 973 | optionssize += sizeof(struct option_base); |
| 974 | /* we need the size to be a multiple of 4 */ |
| 975 | options = (union all_known_options *)&optionsbuffer[optionssize]; |
| 976 | options->as_end = 1; |
| 977 | optionssize += 1; |
| 978 | options = (union all_known_options *)&optionsbuffer[optionssize]; |
| 979 | options->as_end = 1; |
| 980 | optionssize += 1; |
| 981 | } |
| 982 | |
| 983 | options = (union all_known_options *)&optionsbuffer[optionssize]; |
| 984 | options->as_end = OPTION_NUMBER_END; |
| 985 | optionssize += 1; |
| 986 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 987 | if (!skb) |
Faisal Latif | e189062 | 2008-12-24 20:30:04 -0800 | [diff] [blame] | 988 | skb = dev_alloc_skb(MAX_CM_BUFFER); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 989 | if (!skb) { |
| 990 | nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); |
| 991 | return -1; |
| 992 | } |
| 993 | |
| 994 | if (sendack) |
| 995 | flags |= SET_ACK; |
| 996 | |
| 997 | form_cm_frame(skb, cm_node, optionsbuffer, optionssize, NULL, 0, flags); |
| 998 | ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0); |
| 999 | |
| 1000 | return ret; |
| 1001 | } |
| 1002 | |
| 1003 | |
| 1004 | /** |
| 1005 | * send_reset |
| 1006 | */ |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1007 | static int send_reset(struct nes_cm_node *cm_node, struct sk_buff *skb) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1008 | { |
| 1009 | int ret; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1010 | int flags = SET_RST | SET_ACK; |
| 1011 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1012 | if (!skb) |
Faisal Latif | e189062 | 2008-12-24 20:30:04 -0800 | [diff] [blame] | 1013 | skb = dev_alloc_skb(MAX_CM_BUFFER); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1014 | if (!skb) { |
| 1015 | nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1016 | return -ENOMEM; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1017 | } |
| 1018 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1019 | form_cm_frame(skb, cm_node, NULL, 0, NULL, 0, flags); |
| 1020 | ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 0, 1); |
| 1021 | |
| 1022 | return ret; |
| 1023 | } |
| 1024 | |
| 1025 | |
| 1026 | /** |
| 1027 | * send_ack |
| 1028 | */ |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1029 | static int send_ack(struct nes_cm_node *cm_node, struct sk_buff *skb) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1030 | { |
| 1031 | int ret; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1032 | |
| 1033 | if (!skb) |
Faisal Latif | e189062 | 2008-12-24 20:30:04 -0800 | [diff] [blame] | 1034 | skb = dev_alloc_skb(MAX_CM_BUFFER); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1035 | |
| 1036 | if (!skb) { |
| 1037 | nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); |
| 1038 | return -1; |
| 1039 | } |
| 1040 | |
| 1041 | form_cm_frame(skb, cm_node, NULL, 0, NULL, 0, SET_ACK); |
| 1042 | ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 0, 0); |
| 1043 | |
| 1044 | return ret; |
| 1045 | } |
| 1046 | |
| 1047 | |
| 1048 | /** |
| 1049 | * send_fin |
| 1050 | */ |
Roland Dreier | 1a855fb | 2008-04-16 21:01:09 -0700 | [diff] [blame] | 1051 | static int send_fin(struct nes_cm_node *cm_node, struct sk_buff *skb) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1052 | { |
| 1053 | int ret; |
| 1054 | |
| 1055 | /* if we didn't get a frame get one */ |
| 1056 | if (!skb) |
Faisal Latif | e189062 | 2008-12-24 20:30:04 -0800 | [diff] [blame] | 1057 | skb = dev_alloc_skb(MAX_CM_BUFFER); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1058 | |
| 1059 | if (!skb) { |
| 1060 | nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); |
| 1061 | return -1; |
| 1062 | } |
| 1063 | |
| 1064 | form_cm_frame(skb, cm_node, NULL, 0, NULL, 0, SET_ACK | SET_FIN); |
| 1065 | ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0); |
| 1066 | |
| 1067 | return ret; |
| 1068 | } |
| 1069 | |
| 1070 | |
| 1071 | /** |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1072 | * find_node - find a cm node that matches the reference cm node |
| 1073 | */ |
| 1074 | static struct nes_cm_node *find_node(struct nes_cm_core *cm_core, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1075 | u16 rem_port, nes_addr_t rem_addr, u16 loc_port, nes_addr_t loc_addr) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1076 | { |
| 1077 | unsigned long flags; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1078 | struct list_head *hte; |
| 1079 | struct nes_cm_node *cm_node; |
| 1080 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1081 | /* get a handle on the hte */ |
| 1082 | hte = &cm_core->connected_nodes; |
| 1083 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1084 | /* walk list and find cm_node associated with this session ID */ |
| 1085 | spin_lock_irqsave(&cm_core->ht_lock, flags); |
Robert P. J. Day | 4e96a77 | 2008-04-16 21:09:26 -0700 | [diff] [blame] | 1086 | list_for_each_entry(cm_node, hte, list) { |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1087 | /* compare quad, return node handle if a match */ |
| 1088 | nes_debug(NES_DBG_CM, "finding node %x:%x =? %x:%x ^ %x:%x =? %x:%x\n", |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1089 | cm_node->loc_addr, cm_node->loc_port, |
| 1090 | loc_addr, loc_port, |
| 1091 | cm_node->rem_addr, cm_node->rem_port, |
| 1092 | rem_addr, rem_port); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1093 | if ((cm_node->loc_addr == loc_addr) && (cm_node->loc_port == loc_port) && |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1094 | (cm_node->rem_addr == rem_addr) && (cm_node->rem_port == rem_port)) { |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1095 | add_ref_cm_node(cm_node); |
| 1096 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); |
| 1097 | return cm_node; |
| 1098 | } |
| 1099 | } |
| 1100 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); |
| 1101 | |
| 1102 | /* no owner node */ |
| 1103 | return NULL; |
| 1104 | } |
| 1105 | |
| 1106 | |
| 1107 | /** |
| 1108 | * find_listener - find a cm node listening on this addr-port pair |
| 1109 | */ |
| 1110 | static struct nes_cm_listener *find_listener(struct nes_cm_core *cm_core, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1111 | nes_addr_t dst_addr, u16 dst_port, enum nes_cm_listener_state listener_state) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1112 | { |
| 1113 | unsigned long flags; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1114 | struct nes_cm_listener *listen_node; |
| 1115 | |
| 1116 | /* walk list and find cm_node associated with this session ID */ |
| 1117 | spin_lock_irqsave(&cm_core->listen_list_lock, flags); |
Robert P. J. Day | 4e96a77 | 2008-04-16 21:09:26 -0700 | [diff] [blame] | 1118 | list_for_each_entry(listen_node, &cm_core->listen_list.list, list) { |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1119 | /* compare node pair, return node handle if a match */ |
| 1120 | if (((listen_node->loc_addr == dst_addr) || |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1121 | listen_node->loc_addr == 0x00000000) && |
| 1122 | (listen_node->loc_port == dst_port) && |
| 1123 | (listener_state & listen_node->listener_state)) { |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1124 | atomic_inc(&listen_node->ref_count); |
| 1125 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); |
| 1126 | return listen_node; |
| 1127 | } |
| 1128 | } |
| 1129 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); |
| 1130 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1131 | /* no listener */ |
| 1132 | return NULL; |
| 1133 | } |
| 1134 | |
| 1135 | |
| 1136 | /** |
| 1137 | * add_hte_node - add a cm node to the hash table |
| 1138 | */ |
| 1139 | static int add_hte_node(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node) |
| 1140 | { |
| 1141 | unsigned long flags; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1142 | struct list_head *hte; |
| 1143 | |
| 1144 | if (!cm_node || !cm_core) |
| 1145 | return -EINVAL; |
| 1146 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1147 | nes_debug(NES_DBG_CM, "Adding Node %p to Active Connection HT\n", |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1148 | cm_node); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1149 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1150 | spin_lock_irqsave(&cm_core->ht_lock, flags); |
| 1151 | |
| 1152 | /* get a handle on the hash table element (list head for this slot) */ |
| 1153 | hte = &cm_core->connected_nodes; |
| 1154 | list_add_tail(&cm_node->list, hte); |
| 1155 | atomic_inc(&cm_core->ht_node_cnt); |
| 1156 | |
| 1157 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); |
| 1158 | |
| 1159 | return 0; |
| 1160 | } |
| 1161 | |
| 1162 | |
| 1163 | /** |
| 1164 | * mini_cm_dec_refcnt_listen |
| 1165 | */ |
| 1166 | static int mini_cm_dec_refcnt_listen(struct nes_cm_core *cm_core, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1167 | struct nes_cm_listener *listener, int free_hanging_nodes) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1168 | { |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1169 | int ret = -EINVAL; |
| 1170 | int err = 0; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1171 | unsigned long flags; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1172 | struct list_head *list_pos = NULL; |
| 1173 | struct list_head *list_temp = NULL; |
| 1174 | struct nes_cm_node *cm_node = NULL; |
Faisal Latif | 879e5bd | 2008-11-21 20:50:41 -0600 | [diff] [blame] | 1175 | struct list_head reset_list; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1176 | |
| 1177 | nes_debug(NES_DBG_CM, "attempting listener= %p free_nodes= %d, " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1178 | "refcnt=%d\n", listener, free_hanging_nodes, |
| 1179 | atomic_read(&listener->ref_count)); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1180 | /* free non-accelerated child nodes for this listener */ |
Faisal Latif | 879e5bd | 2008-11-21 20:50:41 -0600 | [diff] [blame] | 1181 | INIT_LIST_HEAD(&reset_list); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1182 | if (free_hanging_nodes) { |
| 1183 | spin_lock_irqsave(&cm_core->ht_lock, flags); |
| 1184 | list_for_each_safe(list_pos, list_temp, |
Faisal Latif | 879e5bd | 2008-11-21 20:50:41 -0600 | [diff] [blame] | 1185 | &g_cm_core->connected_nodes) { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1186 | cm_node = container_of(list_pos, struct nes_cm_node, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1187 | list); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1188 | if ((cm_node->listener == listener) && |
Faisal Latif | 879e5bd | 2008-11-21 20:50:41 -0600 | [diff] [blame] | 1189 | (!cm_node->accelerated)) { |
| 1190 | add_ref_cm_node(cm_node); |
| 1191 | list_add(&cm_node->reset_entry, &reset_list); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1192 | } |
| 1193 | } |
| 1194 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); |
| 1195 | } |
Faisal Latif | 879e5bd | 2008-11-21 20:50:41 -0600 | [diff] [blame] | 1196 | |
| 1197 | list_for_each_safe(list_pos, list_temp, &reset_list) { |
| 1198 | cm_node = container_of(list_pos, struct nes_cm_node, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1199 | reset_entry); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1200 | { |
| 1201 | struct nes_cm_node *loopback = cm_node->loopbackpartner; |
Faisal Latif | c5a7d48 | 2009-12-09 15:54:08 -0800 | [diff] [blame] | 1202 | enum nes_cm_node_state old_state; |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1203 | if (NES_CM_STATE_FIN_WAIT1 <= cm_node->state) { |
| 1204 | rem_ref_cm_node(cm_node->cm_core, cm_node); |
| 1205 | } else { |
| 1206 | if (!loopback) { |
| 1207 | cleanup_retrans_entry(cm_node); |
| 1208 | err = send_reset(cm_node, NULL); |
| 1209 | if (err) { |
| 1210 | cm_node->state = |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1211 | NES_CM_STATE_CLOSED; |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1212 | WARN_ON(1); |
| 1213 | } else { |
Faisal Latif | c5a7d48 | 2009-12-09 15:54:08 -0800 | [diff] [blame] | 1214 | old_state = cm_node->state; |
| 1215 | cm_node->state = NES_CM_STATE_LISTENER_DESTROYED; |
| 1216 | if (old_state != NES_CM_STATE_MPAREQ_RCVD) |
| 1217 | rem_ref_cm_node( |
| 1218 | cm_node->cm_core, |
| 1219 | cm_node); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1220 | } |
| 1221 | } else { |
| 1222 | struct nes_cm_event event; |
| 1223 | |
| 1224 | event.cm_node = loopback; |
| 1225 | event.cm_info.rem_addr = |
| 1226 | loopback->rem_addr; |
| 1227 | event.cm_info.loc_addr = |
| 1228 | loopback->loc_addr; |
| 1229 | event.cm_info.rem_port = |
| 1230 | loopback->rem_port; |
| 1231 | event.cm_info.loc_port = |
| 1232 | loopback->loc_port; |
| 1233 | event.cm_info.cm_id = loopback->cm_id; |
Faisal Latif | 43093b9 | 2010-02-12 19:57:04 +0000 | [diff] [blame] | 1234 | add_ref_cm_node(loopback); |
| 1235 | loopback->state = NES_CM_STATE_CLOSED; |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1236 | cm_event_connect_error(&event); |
Faisal Latif | c5a7d48 | 2009-12-09 15:54:08 -0800 | [diff] [blame] | 1237 | cm_node->state = NES_CM_STATE_LISTENER_DESTROYED; |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1238 | |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1239 | rem_ref_cm_node(cm_node->cm_core, |
| 1240 | cm_node); |
| 1241 | |
| 1242 | } |
| 1243 | } |
| 1244 | } |
Faisal Latif | 879e5bd | 2008-11-21 20:50:41 -0600 | [diff] [blame] | 1245 | } |
| 1246 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1247 | spin_lock_irqsave(&cm_core->listen_list_lock, flags); |
| 1248 | if (!atomic_dec_return(&listener->ref_count)) { |
| 1249 | list_del(&listener->list); |
| 1250 | |
| 1251 | /* decrement our listen node count */ |
| 1252 | atomic_dec(&cm_core->listen_node_cnt); |
| 1253 | |
| 1254 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); |
| 1255 | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1256 | if (listener->nesvnic) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1257 | nes_manage_apbvt(listener->nesvnic, listener->loc_port, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1258 | PCI_FUNC(listener->nesvnic->nesdev->pcidev->devfn), NES_MANAGE_APBVT_DEL); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1259 | |
| 1260 | nes_debug(NES_DBG_CM, "destroying listener (%p)\n", listener); |
| 1261 | |
| 1262 | kfree(listener); |
Faisal Latif | a2e9c38 | 2008-02-21 08:27:32 -0600 | [diff] [blame] | 1263 | listener = NULL; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1264 | ret = 0; |
Faisal Latif | 6e10d2e | 2010-02-12 19:55:03 +0000 | [diff] [blame] | 1265 | atomic_inc(&cm_listens_destroyed); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1266 | } else { |
| 1267 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); |
| 1268 | } |
| 1269 | if (listener) { |
| 1270 | if (atomic_read(&listener->pend_accepts_cnt) > 0) |
| 1271 | nes_debug(NES_DBG_CM, "destroying listener (%p)" |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1272 | " with non-zero pending accepts=%u\n", |
| 1273 | listener, atomic_read(&listener->pend_accepts_cnt)); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1274 | } |
| 1275 | |
| 1276 | return ret; |
| 1277 | } |
| 1278 | |
| 1279 | |
| 1280 | /** |
| 1281 | * mini_cm_del_listen |
| 1282 | */ |
| 1283 | static int mini_cm_del_listen(struct nes_cm_core *cm_core, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1284 | struct nes_cm_listener *listener) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1285 | { |
| 1286 | listener->listener_state = NES_CM_LISTENER_PASSIVE_STATE; |
| 1287 | listener->cm_id = NULL; /* going to be destroyed pretty soon */ |
| 1288 | return mini_cm_dec_refcnt_listen(cm_core, listener, 1); |
| 1289 | } |
| 1290 | |
| 1291 | |
| 1292 | /** |
| 1293 | * mini_cm_accelerated |
| 1294 | */ |
| 1295 | static inline int mini_cm_accelerated(struct nes_cm_core *cm_core, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1296 | struct nes_cm_node *cm_node) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1297 | { |
| 1298 | u32 was_timer_set; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1299 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1300 | cm_node->accelerated = 1; |
| 1301 | |
| 1302 | if (cm_node->accept_pend) { |
| 1303 | BUG_ON(!cm_node->listener); |
| 1304 | atomic_dec(&cm_node->listener->pend_accepts_cnt); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1305 | cm_node->accept_pend = 0; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1306 | BUG_ON(atomic_read(&cm_node->listener->pend_accepts_cnt) < 0); |
| 1307 | } |
| 1308 | |
| 1309 | was_timer_set = timer_pending(&cm_core->tcp_timer); |
| 1310 | if (!was_timer_set) { |
| 1311 | cm_core->tcp_timer.expires = jiffies + NES_SHORT_TIME; |
| 1312 | add_timer(&cm_core->tcp_timer); |
| 1313 | } |
| 1314 | |
| 1315 | return 0; |
| 1316 | } |
| 1317 | |
| 1318 | |
| 1319 | /** |
Bob Sharp | 7191a0a | 2008-10-03 12:21:19 -0700 | [diff] [blame] | 1320 | * nes_addr_resolve_neigh |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1321 | */ |
Faisal Latif | 7a576df | 2009-12-09 15:54:33 -0800 | [diff] [blame] | 1322 | static int nes_addr_resolve_neigh(struct nes_vnic *nesvnic, u32 dst_ip, int arpindex) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1323 | { |
| 1324 | struct rtable *rt; |
Bob Sharp | 7191a0a | 2008-10-03 12:21:19 -0700 | [diff] [blame] | 1325 | struct neighbour *neigh; |
Faisal Latif | 7a576df | 2009-12-09 15:54:33 -0800 | [diff] [blame] | 1326 | int rc = arpindex; |
Maciej Sosnowski | 2a4c97e | 2010-11-24 17:29:30 +0000 | [diff] [blame] | 1327 | struct net_device *netdev; |
Faisal Latif | 7a576df | 2009-12-09 15:54:33 -0800 | [diff] [blame] | 1328 | struct nes_adapter *nesadapter = nesvnic->nesdev->nesadapter; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1329 | |
David S. Miller | 78fbfd8 | 2011-03-12 00:00:52 -0500 | [diff] [blame] | 1330 | rt = ip_route_output(&init_net, htonl(dst_ip), 0, 0, 0); |
David S. Miller | b23dd4f | 2011-03-02 14:31:35 -0800 | [diff] [blame] | 1331 | if (IS_ERR(rt)) { |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1332 | printk(KERN_ERR "%s: ip_route_output_key failed for 0x%08X\n", |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1333 | __func__, dst_ip); |
Bob Sharp | 7191a0a | 2008-10-03 12:21:19 -0700 | [diff] [blame] | 1334 | return rc; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1335 | } |
| 1336 | |
Roland Dreier | cf55bb2 | 2011-03-24 17:13:20 -0700 | [diff] [blame] | 1337 | if (netif_is_bond_slave(nesvnic->netdev)) |
Maciej Sosnowski | 2a4c97e | 2010-11-24 17:29:30 +0000 | [diff] [blame] | 1338 | netdev = nesvnic->netdev->master; |
| 1339 | else |
| 1340 | netdev = nesvnic->netdev; |
| 1341 | |
| 1342 | neigh = neigh_lookup(&arp_tbl, &rt->rt_gateway, netdev); |
Bob Sharp | 7191a0a | 2008-10-03 12:21:19 -0700 | [diff] [blame] | 1343 | if (neigh) { |
| 1344 | if (neigh->nud_state & NUD_VALID) { |
| 1345 | nes_debug(NES_DBG_CM, "Neighbor MAC address for 0x%08X" |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1346 | " is %pM, Gateway is 0x%08X \n", dst_ip, |
| 1347 | neigh->ha, ntohl(rt->rt_gateway)); |
Faisal Latif | 7a576df | 2009-12-09 15:54:33 -0800 | [diff] [blame] | 1348 | |
| 1349 | if (arpindex >= 0) { |
| 1350 | if (!memcmp(nesadapter->arp_table[arpindex].mac_addr, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1351 | neigh->ha, ETH_ALEN)) { |
Faisal Latif | 7a576df | 2009-12-09 15:54:33 -0800 | [diff] [blame] | 1352 | /* Mac address same as in nes_arp_table */ |
| 1353 | neigh_release(neigh); |
| 1354 | ip_rt_put(rt); |
| 1355 | return rc; |
| 1356 | } |
| 1357 | |
| 1358 | nes_manage_arp_cache(nesvnic->netdev, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1359 | nesadapter->arp_table[arpindex].mac_addr, |
| 1360 | dst_ip, NES_ARP_DELETE); |
Faisal Latif | 7a576df | 2009-12-09 15:54:33 -0800 | [diff] [blame] | 1361 | } |
| 1362 | |
Bob Sharp | 7191a0a | 2008-10-03 12:21:19 -0700 | [diff] [blame] | 1363 | nes_manage_arp_cache(nesvnic->netdev, neigh->ha, |
| 1364 | dst_ip, NES_ARP_ADD); |
| 1365 | rc = nes_arp_table(nesvnic->nesdev, dst_ip, NULL, |
| 1366 | NES_ARP_RESOLVE); |
| 1367 | } |
| 1368 | neigh_release(neigh); |
| 1369 | } |
| 1370 | |
| 1371 | if ((neigh == NULL) || (!(neigh->nud_state & NUD_VALID))) |
David S. Miller | 69cce1d | 2011-07-17 23:09:49 -0700 | [diff] [blame] | 1372 | neigh_event_send(dst_get_neighbour(&rt->dst), NULL); |
Bob Sharp | 7191a0a | 2008-10-03 12:21:19 -0700 | [diff] [blame] | 1373 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1374 | ip_rt_put(rt); |
Bob Sharp | 7191a0a | 2008-10-03 12:21:19 -0700 | [diff] [blame] | 1375 | return rc; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1376 | } |
| 1377 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1378 | /** |
| 1379 | * make_cm_node - create a new instance of a cm node |
| 1380 | */ |
| 1381 | static struct nes_cm_node *make_cm_node(struct nes_cm_core *cm_core, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1382 | struct nes_vnic *nesvnic, struct nes_cm_info *cm_info, |
| 1383 | struct nes_cm_listener *listener) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1384 | { |
| 1385 | struct nes_cm_node *cm_node; |
| 1386 | struct timespec ts; |
Faisal Latif | 7a576df | 2009-12-09 15:54:33 -0800 | [diff] [blame] | 1387 | int oldarpindex = 0; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1388 | int arpindex = 0; |
| 1389 | struct nes_device *nesdev; |
| 1390 | struct nes_adapter *nesadapter; |
| 1391 | |
| 1392 | /* create an hte and cm_node for this instance */ |
| 1393 | cm_node = kzalloc(sizeof(*cm_node), GFP_ATOMIC); |
| 1394 | if (!cm_node) |
| 1395 | return NULL; |
| 1396 | |
| 1397 | /* set our node specific transport info */ |
| 1398 | cm_node->loc_addr = cm_info->loc_addr; |
| 1399 | cm_node->rem_addr = cm_info->rem_addr; |
| 1400 | cm_node->loc_port = cm_info->loc_port; |
| 1401 | cm_node->rem_port = cm_info->rem_port; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1402 | |
| 1403 | cm_node->mpa_frame_rev = mpa_version; |
| 1404 | cm_node->send_rdma0_op = SEND_RDMA_READ_ZERO; |
| 1405 | cm_node->ird_size = IETF_NO_IRD_ORD; |
| 1406 | cm_node->ord_size = IETF_NO_IRD_ORD; |
| 1407 | |
Harvey Harrison | 6377943 | 2008-10-31 00:56:00 -0700 | [diff] [blame] | 1408 | nes_debug(NES_DBG_CM, "Make node addresses : loc = %pI4:%x, rem = %pI4:%x\n", |
| 1409 | &cm_node->loc_addr, cm_node->loc_port, |
| 1410 | &cm_node->rem_addr, cm_node->rem_port); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1411 | cm_node->listener = listener; |
| 1412 | cm_node->netdev = nesvnic->netdev; |
| 1413 | cm_node->cm_id = cm_info->cm_id; |
| 1414 | memcpy(cm_node->loc_mac, nesvnic->netdev->dev_addr, ETH_ALEN); |
| 1415 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1416 | nes_debug(NES_DBG_CM, "listener=%p, cm_id=%p\n", cm_node->listener, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1417 | cm_node->cm_id); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1418 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1419 | spin_lock_init(&cm_node->retrans_list_lock); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1420 | |
| 1421 | cm_node->loopbackpartner = NULL; |
| 1422 | atomic_set(&cm_node->ref_count, 1); |
| 1423 | /* associate our parent CM core */ |
| 1424 | cm_node->cm_core = cm_core; |
| 1425 | cm_node->tcp_cntxt.loc_id = NES_CM_DEF_LOCAL_ID; |
| 1426 | cm_node->tcp_cntxt.rcv_wscale = NES_CM_DEFAULT_RCV_WND_SCALE; |
| 1427 | cm_node->tcp_cntxt.rcv_wnd = NES_CM_DEFAULT_RCV_WND_SCALED >> |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1428 | NES_CM_DEFAULT_RCV_WND_SCALE; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1429 | ts = current_kernel_time(); |
| 1430 | cm_node->tcp_cntxt.loc_seq_num = htonl(ts.tv_nsec); |
| 1431 | cm_node->tcp_cntxt.mss = nesvnic->max_frame_size - sizeof(struct iphdr) - |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1432 | sizeof(struct tcphdr) - ETH_HLEN - VLAN_HLEN; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1433 | cm_node->tcp_cntxt.rcv_nxt = 0; |
| 1434 | /* get a unique session ID , add thread_id to an upcounter to handle race */ |
| 1435 | atomic_inc(&cm_core->node_cnt); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1436 | cm_node->conn_type = cm_info->conn_type; |
| 1437 | cm_node->apbvt_set = 0; |
| 1438 | cm_node->accept_pend = 0; |
| 1439 | |
| 1440 | cm_node->nesvnic = nesvnic; |
| 1441 | /* get some device handles, for arp lookup */ |
| 1442 | nesdev = nesvnic->nesdev; |
| 1443 | nesadapter = nesdev->nesadapter; |
| 1444 | |
| 1445 | cm_node->loopbackpartner = NULL; |
Faisal Latif | 7a576df | 2009-12-09 15:54:33 -0800 | [diff] [blame] | 1446 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1447 | /* get the mac addr for the remote node */ |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1448 | if (ipv4_is_loopback(htonl(cm_node->rem_addr))) { |
Chien Tung | 1ee8655 | 2008-11-21 20:51:04 -0600 | [diff] [blame] | 1449 | arpindex = nes_arp_table(nesdev, ntohl(nesvnic->local_ipaddr), NULL, NES_ARP_RESOLVE); |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1450 | } else { |
Faisal Latif | 7a576df | 2009-12-09 15:54:33 -0800 | [diff] [blame] | 1451 | oldarpindex = nes_arp_table(nesdev, cm_node->rem_addr, NULL, NES_ARP_RESOLVE); |
| 1452 | arpindex = nes_addr_resolve_neigh(nesvnic, cm_info->rem_addr, oldarpindex); |
Faisal Latif | 7a576df | 2009-12-09 15:54:33 -0800 | [diff] [blame] | 1453 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1454 | if (arpindex < 0) { |
Faisal Latif | 7a576df | 2009-12-09 15:54:33 -0800 | [diff] [blame] | 1455 | kfree(cm_node); |
| 1456 | return NULL; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1457 | } |
| 1458 | |
| 1459 | /* copy the mac addr to node context */ |
| 1460 | memcpy(cm_node->rem_mac, nesadapter->arp_table[arpindex].mac_addr, ETH_ALEN); |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1461 | nes_debug(NES_DBG_CM, "Remote mac addr from arp table: %pM\n", |
| 1462 | cm_node->rem_mac); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1463 | |
| 1464 | add_hte_node(cm_core, cm_node); |
| 1465 | atomic_inc(&cm_nodes_created); |
| 1466 | |
| 1467 | return cm_node; |
| 1468 | } |
| 1469 | |
| 1470 | |
| 1471 | /** |
| 1472 | * add_ref_cm_node - destroy an instance of a cm node |
| 1473 | */ |
| 1474 | static int add_ref_cm_node(struct nes_cm_node *cm_node) |
| 1475 | { |
| 1476 | atomic_inc(&cm_node->ref_count); |
| 1477 | return 0; |
| 1478 | } |
| 1479 | |
| 1480 | |
| 1481 | /** |
| 1482 | * rem_ref_cm_node - destroy an instance of a cm node |
| 1483 | */ |
| 1484 | static int rem_ref_cm_node(struct nes_cm_core *cm_core, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1485 | struct nes_cm_node *cm_node) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1486 | { |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1487 | unsigned long flags; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1488 | struct nes_qp *nesqp; |
| 1489 | |
| 1490 | if (!cm_node) |
| 1491 | return -EINVAL; |
| 1492 | |
| 1493 | spin_lock_irqsave(&cm_node->cm_core->ht_lock, flags); |
| 1494 | if (atomic_dec_return(&cm_node->ref_count)) { |
| 1495 | spin_unlock_irqrestore(&cm_node->cm_core->ht_lock, flags); |
| 1496 | return 0; |
| 1497 | } |
| 1498 | list_del(&cm_node->list); |
| 1499 | atomic_dec(&cm_core->ht_node_cnt); |
| 1500 | spin_unlock_irqrestore(&cm_node->cm_core->ht_lock, flags); |
| 1501 | |
| 1502 | /* if the node is destroyed before connection was accelerated */ |
| 1503 | if (!cm_node->accelerated && cm_node->accept_pend) { |
| 1504 | BUG_ON(!cm_node->listener); |
| 1505 | atomic_dec(&cm_node->listener->pend_accepts_cnt); |
| 1506 | BUG_ON(atomic_read(&cm_node->listener->pend_accepts_cnt) < 0); |
| 1507 | } |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1508 | WARN_ON(cm_node->send_entry); |
| 1509 | if (cm_node->recv_entry) |
| 1510 | handle_recv_entry(cm_node, 0); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1511 | if (cm_node->listener) { |
| 1512 | mini_cm_dec_refcnt_listen(cm_core, cm_node->listener, 0); |
| 1513 | } else { |
| 1514 | if (cm_node->apbvt_set && cm_node->nesvnic) { |
| 1515 | nes_manage_apbvt(cm_node->nesvnic, cm_node->loc_port, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1516 | PCI_FUNC( |
| 1517 | cm_node->nesvnic->nesdev->pcidev->devfn), |
| 1518 | NES_MANAGE_APBVT_DEL); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1519 | } |
| 1520 | } |
| 1521 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1522 | atomic_dec(&cm_core->node_cnt); |
| 1523 | atomic_inc(&cm_nodes_destroyed); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1524 | nesqp = cm_node->nesqp; |
| 1525 | if (nesqp) { |
| 1526 | nesqp->cm_node = NULL; |
| 1527 | nes_rem_ref(&nesqp->ibqp); |
| 1528 | cm_node->nesqp = NULL; |
| 1529 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1530 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1531 | kfree(cm_node); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1532 | return 0; |
| 1533 | } |
| 1534 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1535 | /** |
| 1536 | * process_options |
| 1537 | */ |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1538 | static int process_options(struct nes_cm_node *cm_node, u8 *optionsloc, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1539 | u32 optionsize, u32 syn_packet) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1540 | { |
| 1541 | u32 tmp; |
| 1542 | u32 offset = 0; |
| 1543 | union all_known_options *all_options; |
| 1544 | char got_mss_option = 0; |
| 1545 | |
| 1546 | while (offset < optionsize) { |
| 1547 | all_options = (union all_known_options *)(optionsloc + offset); |
| 1548 | switch (all_options->as_base.optionnum) { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1549 | case OPTION_NUMBER_END: |
| 1550 | offset = optionsize; |
| 1551 | break; |
| 1552 | case OPTION_NUMBER_NONE: |
| 1553 | offset += 1; |
| 1554 | continue; |
| 1555 | case OPTION_NUMBER_MSS: |
| 1556 | nes_debug(NES_DBG_CM, "%s: MSS Length: %d Offset: %d " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1557 | "Size: %d\n", __func__, |
| 1558 | all_options->as_mss.length, offset, optionsize); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1559 | got_mss_option = 1; |
| 1560 | if (all_options->as_mss.length != 4) { |
| 1561 | return 1; |
| 1562 | } else { |
| 1563 | tmp = ntohs(all_options->as_mss.mss); |
| 1564 | if (tmp > 0 && tmp < |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1565 | cm_node->tcp_cntxt.mss) |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1566 | cm_node->tcp_cntxt.mss = tmp; |
| 1567 | } |
| 1568 | break; |
| 1569 | case OPTION_NUMBER_WINDOW_SCALE: |
| 1570 | cm_node->tcp_cntxt.snd_wscale = |
| 1571 | all_options->as_windowscale.shiftcount; |
| 1572 | break; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1573 | default: |
| 1574 | nes_debug(NES_DBG_CM, "TCP Option not understood: %x\n", |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1575 | all_options->as_base.optionnum); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1576 | break; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1577 | } |
| 1578 | offset += all_options->as_base.length; |
| 1579 | } |
| 1580 | if ((!got_mss_option) && (syn_packet)) |
| 1581 | cm_node->tcp_cntxt.mss = NES_CM_DEFAULT_MSS; |
| 1582 | return 0; |
| 1583 | } |
| 1584 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1585 | static void drop_packet(struct sk_buff *skb) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1586 | { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1587 | atomic_inc(&cm_accel_dropped_pkts); |
| 1588 | dev_kfree_skb_any(skb); |
| 1589 | } |
| 1590 | |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1591 | static void handle_fin_pkt(struct nes_cm_node *cm_node) |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1592 | { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1593 | nes_debug(NES_DBG_CM, "Received FIN, cm_node = %p, state = %u. " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1594 | "refcnt=%d\n", cm_node, cm_node->state, |
| 1595 | atomic_read(&cm_node->ref_count)); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1596 | switch (cm_node->state) { |
| 1597 | case NES_CM_STATE_SYN_RCVD: |
| 1598 | case NES_CM_STATE_SYN_SENT: |
| 1599 | case NES_CM_STATE_ESTABLISHED: |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1600 | case NES_CM_STATE_MPAREJ_RCVD: |
Faisal Latif | 109d67e | 2009-04-27 13:41:06 -0700 | [diff] [blame] | 1601 | cm_node->tcp_cntxt.rcv_nxt++; |
| 1602 | cleanup_retrans_entry(cm_node); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1603 | cm_node->state = NES_CM_STATE_LAST_ACK; |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1604 | send_fin(cm_node, NULL); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1605 | break; |
Faisal Latif | b1190d3 | 2009-12-09 15:54:32 -0800 | [diff] [blame] | 1606 | case NES_CM_STATE_MPAREQ_SENT: |
| 1607 | create_event(cm_node, NES_CM_EVENT_ABORTED); |
| 1608 | cm_node->tcp_cntxt.rcv_nxt++; |
| 1609 | cleanup_retrans_entry(cm_node); |
| 1610 | cm_node->state = NES_CM_STATE_CLOSED; |
| 1611 | add_ref_cm_node(cm_node); |
| 1612 | send_reset(cm_node, NULL); |
| 1613 | break; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1614 | case NES_CM_STATE_FIN_WAIT1: |
Faisal Latif | 109d67e | 2009-04-27 13:41:06 -0700 | [diff] [blame] | 1615 | cm_node->tcp_cntxt.rcv_nxt++; |
| 1616 | cleanup_retrans_entry(cm_node); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1617 | cm_node->state = NES_CM_STATE_CLOSING; |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1618 | send_ack(cm_node, NULL); |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 1619 | /* Wait for ACK as this is simultaneous close.. |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1620 | * After we receive ACK, do not send anything.. |
| 1621 | * Just rm the node.. Done.. */ |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1622 | break; |
| 1623 | case NES_CM_STATE_FIN_WAIT2: |
Faisal Latif | 109d67e | 2009-04-27 13:41:06 -0700 | [diff] [blame] | 1624 | cm_node->tcp_cntxt.rcv_nxt++; |
| 1625 | cleanup_retrans_entry(cm_node); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1626 | cm_node->state = NES_CM_STATE_TIME_WAIT; |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1627 | send_ack(cm_node, NULL); |
| 1628 | schedule_nes_timer(cm_node, NULL, NES_TIMER_TYPE_CLOSE, 1, 0); |
| 1629 | break; |
| 1630 | case NES_CM_STATE_TIME_WAIT: |
Faisal Latif | 109d67e | 2009-04-27 13:41:06 -0700 | [diff] [blame] | 1631 | cm_node->tcp_cntxt.rcv_nxt++; |
| 1632 | cleanup_retrans_entry(cm_node); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1633 | cm_node->state = NES_CM_STATE_CLOSED; |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1634 | rem_ref_cm_node(cm_node->cm_core, cm_node); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1635 | break; |
| 1636 | case NES_CM_STATE_TSA: |
| 1637 | default: |
| 1638 | nes_debug(NES_DBG_CM, "Error Rcvd FIN for node-%p state = %d\n", |
| 1639 | cm_node, cm_node->state); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1640 | break; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1641 | } |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1642 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1643 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1644 | |
| 1645 | static void handle_rst_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, |
| 1646 | struct tcphdr *tcph) |
| 1647 | { |
| 1648 | |
| 1649 | int reset = 0; /* whether to send reset in case of err.. */ |
| 1650 | atomic_inc(&cm_resets_recvd); |
| 1651 | nes_debug(NES_DBG_CM, "Received Reset, cm_node = %p, state = %u." |
| 1652 | " refcnt=%d\n", cm_node, cm_node->state, |
| 1653 | atomic_read(&cm_node->ref_count)); |
| 1654 | cleanup_retrans_entry(cm_node); |
| 1655 | switch (cm_node->state) { |
| 1656 | case NES_CM_STATE_SYN_SENT: |
| 1657 | case NES_CM_STATE_MPAREQ_SENT: |
| 1658 | nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p " |
| 1659 | "listener=%p state=%d\n", __func__, __LINE__, cm_node, |
| 1660 | cm_node->listener, cm_node->state); |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1661 | switch (cm_node->mpa_frame_rev) { |
| 1662 | case IETF_MPA_V2: |
| 1663 | cm_node->mpa_frame_rev = IETF_MPA_V1; |
| 1664 | /* send a syn and goto syn sent state */ |
| 1665 | cm_node->state = NES_CM_STATE_SYN_SENT; |
| 1666 | if (send_syn(cm_node, 0, NULL)) { |
| 1667 | active_open_err(cm_node, skb, reset); |
| 1668 | } |
| 1669 | break; |
| 1670 | case IETF_MPA_V1: |
| 1671 | default: |
| 1672 | active_open_err(cm_node, skb, reset); |
| 1673 | break; |
| 1674 | } |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1675 | break; |
Faisal Latif | 183ecfa | 2008-11-21 20:50:46 -0600 | [diff] [blame] | 1676 | case NES_CM_STATE_MPAREQ_RCVD: |
Dan Carpenter | 4d8d638 | 2010-09-15 18:32:39 +0200 | [diff] [blame] | 1677 | atomic_inc(&cm_node->passive_state); |
Faisal Latif | 183ecfa | 2008-11-21 20:50:46 -0600 | [diff] [blame] | 1678 | dev_kfree_skb_any(skb); |
| 1679 | break; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1680 | case NES_CM_STATE_ESTABLISHED: |
| 1681 | case NES_CM_STATE_SYN_RCVD: |
| 1682 | case NES_CM_STATE_LISTENING: |
| 1683 | nes_debug(NES_DBG_CM, "Bad state %s[%u]\n", __func__, __LINE__); |
| 1684 | passive_open_err(cm_node, skb, reset); |
| 1685 | break; |
| 1686 | case NES_CM_STATE_TSA: |
Faisal Latif | 183ecfa | 2008-11-21 20:50:46 -0600 | [diff] [blame] | 1687 | active_open_err(cm_node, skb, reset); |
| 1688 | break; |
| 1689 | case NES_CM_STATE_CLOSED: |
Faisal Latif | 183ecfa | 2008-11-21 20:50:46 -0600 | [diff] [blame] | 1690 | drop_packet(skb); |
| 1691 | break; |
Faisal Latif | dae5872 | 2010-08-14 21:04:56 +0000 | [diff] [blame] | 1692 | case NES_CM_STATE_FIN_WAIT2: |
Faisal Latif | 68237a0 | 2009-06-22 22:53:28 -0700 | [diff] [blame] | 1693 | case NES_CM_STATE_FIN_WAIT1: |
Faisal Latif | 109d67e | 2009-04-27 13:41:06 -0700 | [diff] [blame] | 1694 | case NES_CM_STATE_LAST_ACK: |
| 1695 | cm_node->cm_id->rem_ref(cm_node->cm_id); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1696 | case NES_CM_STATE_TIME_WAIT: |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1697 | cm_node->state = NES_CM_STATE_CLOSED; |
| 1698 | rem_ref_cm_node(cm_node->cm_core, cm_node); |
| 1699 | drop_packet(skb); |
| 1700 | break; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1701 | default: |
Faisal Latif | 183ecfa | 2008-11-21 20:50:46 -0600 | [diff] [blame] | 1702 | drop_packet(skb); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1703 | break; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1704 | } |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1705 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1706 | |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1707 | |
| 1708 | static void handle_rcv_mpa(struct nes_cm_node *cm_node, struct sk_buff *skb) |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1709 | { |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1710 | int ret = 0; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1711 | int datasize = skb->len; |
| 1712 | u8 *dataloc = skb->data; |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1713 | |
| 1714 | enum nes_cm_event_type type = NES_CM_EVENT_UNKNOWN; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1715 | u32 res_type; |
| 1716 | |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1717 | ret = parse_mpa(cm_node, dataloc, &res_type, datasize); |
| 1718 | if (ret) { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1719 | nes_debug(NES_DBG_CM, "didn't like MPA Request\n"); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1720 | if (cm_node->state == NES_CM_STATE_MPAREQ_SENT) { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1721 | nes_debug(NES_DBG_CM, "%s[%u] create abort for " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1722 | "cm_node=%p listener=%p state=%d\n", __func__, |
| 1723 | __LINE__, cm_node, cm_node->listener, |
| 1724 | cm_node->state); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1725 | active_open_err(cm_node, skb, 1); |
| 1726 | } else { |
| 1727 | passive_open_err(cm_node, skb, 1); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1728 | } |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1729 | return; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1730 | } |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1731 | |
| 1732 | switch (cm_node->state) { |
| 1733 | case NES_CM_STATE_ESTABLISHED: |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1734 | if (res_type == NES_MPA_REQUEST_REJECT) |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1735 | /*BIG problem as we are receiving the MPA.. So should |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1736 | * not be REJECT.. This is Passive Open.. We can |
| 1737 | * only receive it Reject for Active Open...*/ |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1738 | WARN_ON(1); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1739 | cm_node->state = NES_CM_STATE_MPAREQ_RCVD; |
| 1740 | type = NES_CM_EVENT_MPA_REQ; |
| 1741 | atomic_set(&cm_node->passive_state, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1742 | NES_PASSIVE_STATE_INDICATED); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1743 | break; |
| 1744 | case NES_CM_STATE_MPAREQ_SENT: |
Faisal Latif | 109d67e | 2009-04-27 13:41:06 -0700 | [diff] [blame] | 1745 | cleanup_retrans_entry(cm_node); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1746 | if (res_type == NES_MPA_REQUEST_REJECT) { |
| 1747 | type = NES_CM_EVENT_MPA_REJECT; |
| 1748 | cm_node->state = NES_CM_STATE_MPAREJ_RCVD; |
| 1749 | } else { |
| 1750 | type = NES_CM_EVENT_CONNECTED; |
| 1751 | cm_node->state = NES_CM_STATE_TSA; |
| 1752 | } |
| 1753 | |
| 1754 | break; |
| 1755 | default: |
| 1756 | WARN_ON(1); |
| 1757 | break; |
| 1758 | } |
| 1759 | dev_kfree_skb_any(skb); |
| 1760 | create_event(cm_node, type); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1761 | } |
| 1762 | |
| 1763 | static void indicate_pkt_err(struct nes_cm_node *cm_node, struct sk_buff *skb) |
| 1764 | { |
| 1765 | switch (cm_node->state) { |
| 1766 | case NES_CM_STATE_SYN_SENT: |
| 1767 | case NES_CM_STATE_MPAREQ_SENT: |
| 1768 | nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1769 | "listener=%p state=%d\n", __func__, __LINE__, cm_node, |
| 1770 | cm_node->listener, cm_node->state); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1771 | active_open_err(cm_node, skb, 1); |
| 1772 | break; |
| 1773 | case NES_CM_STATE_ESTABLISHED: |
| 1774 | case NES_CM_STATE_SYN_RCVD: |
| 1775 | passive_open_err(cm_node, skb, 1); |
| 1776 | break; |
| 1777 | case NES_CM_STATE_TSA: |
| 1778 | default: |
| 1779 | drop_packet(skb); |
| 1780 | } |
| 1781 | } |
| 1782 | |
| 1783 | static int check_syn(struct nes_cm_node *cm_node, struct tcphdr *tcph, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1784 | struct sk_buff *skb) |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1785 | { |
| 1786 | int err; |
| 1787 | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1788 | err = ((ntohl(tcph->ack_seq) == cm_node->tcp_cntxt.loc_seq_num)) ? 0 : 1; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1789 | if (err) |
| 1790 | active_open_err(cm_node, skb, 1); |
| 1791 | |
| 1792 | return err; |
| 1793 | } |
| 1794 | |
| 1795 | static int check_seq(struct nes_cm_node *cm_node, struct tcphdr *tcph, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1796 | struct sk_buff *skb) |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1797 | { |
| 1798 | int err = 0; |
| 1799 | u32 seq; |
| 1800 | u32 ack_seq; |
| 1801 | u32 loc_seq_num = cm_node->tcp_cntxt.loc_seq_num; |
| 1802 | u32 rcv_nxt = cm_node->tcp_cntxt.rcv_nxt; |
| 1803 | u32 rcv_wnd; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1804 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1805 | seq = ntohl(tcph->seq); |
| 1806 | ack_seq = ntohl(tcph->ack_seq); |
| 1807 | rcv_wnd = cm_node->tcp_cntxt.rcv_wnd; |
| 1808 | if (ack_seq != loc_seq_num) |
| 1809 | err = 1; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1810 | else if (!between(seq, rcv_nxt, (rcv_nxt + rcv_wnd))) |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1811 | err = 1; |
| 1812 | if (err) { |
| 1813 | nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1814 | "listener=%p state=%d\n", __func__, __LINE__, cm_node, |
| 1815 | cm_node->listener, cm_node->state); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1816 | indicate_pkt_err(cm_node, skb); |
| 1817 | nes_debug(NES_DBG_CM, "seq ERROR cm_node =%p seq=0x%08X " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1818 | "rcv_nxt=0x%08X rcv_wnd=0x%x\n", cm_node, seq, rcv_nxt, |
| 1819 | rcv_wnd); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1820 | } |
| 1821 | return err; |
| 1822 | } |
| 1823 | |
| 1824 | /* |
| 1825 | * handle_syn_pkt() is for Passive node. The syn packet is received when a node |
| 1826 | * is created with a listener or it may comein as rexmitted packet which in |
| 1827 | * that case will be just dropped. |
| 1828 | */ |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1829 | static void handle_syn_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1830 | struct tcphdr *tcph) |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1831 | { |
| 1832 | int ret; |
| 1833 | u32 inc_sequence; |
| 1834 | int optionsize; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1835 | |
| 1836 | optionsize = (tcph->doff << 2) - sizeof(struct tcphdr); |
Faisal Latif | abb7725 | 2008-11-21 20:50:52 -0600 | [diff] [blame] | 1837 | skb_trim(skb, 0); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1838 | inc_sequence = ntohl(tcph->seq); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1839 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1840 | switch (cm_node->state) { |
| 1841 | case NES_CM_STATE_SYN_SENT: |
| 1842 | case NES_CM_STATE_MPAREQ_SENT: |
| 1843 | /* Rcvd syn on active open connection*/ |
| 1844 | active_open_err(cm_node, skb, 1); |
| 1845 | break; |
| 1846 | case NES_CM_STATE_LISTENING: |
| 1847 | /* Passive OPEN */ |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1848 | if (atomic_read(&cm_node->listener->pend_accepts_cnt) > |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1849 | cm_node->listener->backlog) { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1850 | nes_debug(NES_DBG_CM, "drop syn due to backlog " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1851 | "pressure \n"); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1852 | cm_backlog_drops++; |
| 1853 | passive_open_err(cm_node, skb, 0); |
| 1854 | break; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1855 | } |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1856 | ret = handle_tcp_options(cm_node, tcph, skb, optionsize, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1857 | 1); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1858 | if (ret) { |
| 1859 | passive_open_err(cm_node, skb, 0); |
| 1860 | /* drop pkt */ |
| 1861 | break; |
| 1862 | } |
| 1863 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1; |
| 1864 | BUG_ON(cm_node->send_entry); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1865 | cm_node->accept_pend = 1; |
| 1866 | atomic_inc(&cm_node->listener->pend_accepts_cnt); |
| 1867 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1868 | cm_node->state = NES_CM_STATE_SYN_RCVD; |
| 1869 | send_syn(cm_node, 1, skb); |
| 1870 | break; |
Faisal Latif | abb7725 | 2008-11-21 20:50:52 -0600 | [diff] [blame] | 1871 | case NES_CM_STATE_CLOSED: |
| 1872 | cleanup_retrans_entry(cm_node); |
Faisal Latif | 886f98a | 2009-12-09 15:54:18 -0800 | [diff] [blame] | 1873 | add_ref_cm_node(cm_node); |
Faisal Latif | abb7725 | 2008-11-21 20:50:52 -0600 | [diff] [blame] | 1874 | send_reset(cm_node, skb); |
| 1875 | break; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1876 | case NES_CM_STATE_TSA: |
| 1877 | case NES_CM_STATE_ESTABLISHED: |
| 1878 | case NES_CM_STATE_FIN_WAIT1: |
| 1879 | case NES_CM_STATE_FIN_WAIT2: |
| 1880 | case NES_CM_STATE_MPAREQ_RCVD: |
| 1881 | case NES_CM_STATE_LAST_ACK: |
| 1882 | case NES_CM_STATE_CLOSING: |
| 1883 | case NES_CM_STATE_UNKNOWN: |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1884 | default: |
| 1885 | drop_packet(skb); |
| 1886 | break; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1887 | } |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1888 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1889 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1890 | static void handle_synack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1891 | struct tcphdr *tcph) |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1892 | { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1893 | int ret; |
| 1894 | u32 inc_sequence; |
| 1895 | int optionsize; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1896 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1897 | optionsize = (tcph->doff << 2) - sizeof(struct tcphdr); |
Faisal Latif | abb7725 | 2008-11-21 20:50:52 -0600 | [diff] [blame] | 1898 | skb_trim(skb, 0); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1899 | inc_sequence = ntohl(tcph->seq); |
| 1900 | switch (cm_node->state) { |
| 1901 | case NES_CM_STATE_SYN_SENT: |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1902 | cleanup_retrans_entry(cm_node); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1903 | /* active open */ |
| 1904 | if (check_syn(cm_node, tcph, skb)) |
| 1905 | return; |
| 1906 | cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq); |
| 1907 | /* setup options */ |
| 1908 | ret = handle_tcp_options(cm_node, tcph, skb, optionsize, 0); |
| 1909 | if (ret) { |
| 1910 | nes_debug(NES_DBG_CM, "cm_node=%p tcp_options failed\n", |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1911 | cm_node); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1912 | break; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 1913 | } |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1914 | cleanup_retrans_entry(cm_node); |
| 1915 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1; |
| 1916 | send_mpa_request(cm_node, skb); |
| 1917 | cm_node->state = NES_CM_STATE_MPAREQ_SENT; |
| 1918 | break; |
| 1919 | case NES_CM_STATE_MPAREQ_RCVD: |
| 1920 | /* passive open, so should not be here */ |
| 1921 | passive_open_err(cm_node, skb, 1); |
| 1922 | break; |
Faisal Latif | abb7725 | 2008-11-21 20:50:52 -0600 | [diff] [blame] | 1923 | case NES_CM_STATE_LISTENING: |
Faisal Latif | 886f98a | 2009-12-09 15:54:18 -0800 | [diff] [blame] | 1924 | cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq); |
| 1925 | cleanup_retrans_entry(cm_node); |
| 1926 | cm_node->state = NES_CM_STATE_CLOSED; |
| 1927 | send_reset(cm_node, skb); |
| 1928 | break; |
Faisal Latif | abb7725 | 2008-11-21 20:50:52 -0600 | [diff] [blame] | 1929 | case NES_CM_STATE_CLOSED: |
| 1930 | cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq); |
| 1931 | cleanup_retrans_entry(cm_node); |
Faisal Latif | 886f98a | 2009-12-09 15:54:18 -0800 | [diff] [blame] | 1932 | add_ref_cm_node(cm_node); |
Faisal Latif | abb7725 | 2008-11-21 20:50:52 -0600 | [diff] [blame] | 1933 | send_reset(cm_node, skb); |
| 1934 | break; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1935 | case NES_CM_STATE_ESTABLISHED: |
| 1936 | case NES_CM_STATE_FIN_WAIT1: |
| 1937 | case NES_CM_STATE_FIN_WAIT2: |
| 1938 | case NES_CM_STATE_LAST_ACK: |
| 1939 | case NES_CM_STATE_TSA: |
| 1940 | case NES_CM_STATE_CLOSING: |
| 1941 | case NES_CM_STATE_UNKNOWN: |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1942 | case NES_CM_STATE_MPAREQ_SENT: |
| 1943 | default: |
| 1944 | drop_packet(skb); |
| 1945 | break; |
| 1946 | } |
| 1947 | } |
| 1948 | |
Faisal Latif | 109d67e | 2009-04-27 13:41:06 -0700 | [diff] [blame] | 1949 | static int handle_ack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1950 | struct tcphdr *tcph) |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1951 | { |
| 1952 | int datasize = 0; |
| 1953 | u32 inc_sequence; |
Faisal Latif | 109d67e | 2009-04-27 13:41:06 -0700 | [diff] [blame] | 1954 | int ret = 0; |
Faisal Latif | abb7725 | 2008-11-21 20:50:52 -0600 | [diff] [blame] | 1955 | int optionsize; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1956 | |
Faisal Latif | abb7725 | 2008-11-21 20:50:52 -0600 | [diff] [blame] | 1957 | optionsize = (tcph->doff << 2) - sizeof(struct tcphdr); |
Faisal Latif | abb7725 | 2008-11-21 20:50:52 -0600 | [diff] [blame] | 1958 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1959 | if (check_seq(cm_node, tcph, skb)) |
Faisal Latif | 109d67e | 2009-04-27 13:41:06 -0700 | [diff] [blame] | 1960 | return -EINVAL; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1961 | |
| 1962 | skb_pull(skb, tcph->doff << 2); |
| 1963 | inc_sequence = ntohl(tcph->seq); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1964 | datasize = skb->len; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1965 | switch (cm_node->state) { |
| 1966 | case NES_CM_STATE_SYN_RCVD: |
| 1967 | /* Passive OPEN */ |
Faisal Latif | 109d67e | 2009-04-27 13:41:06 -0700 | [diff] [blame] | 1968 | cleanup_retrans_entry(cm_node); |
Faisal Latif | abb7725 | 2008-11-21 20:50:52 -0600 | [diff] [blame] | 1969 | ret = handle_tcp_options(cm_node, tcph, skb, optionsize, 1); |
| 1970 | if (ret) |
| 1971 | break; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1972 | cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq); |
| 1973 | cm_node->state = NES_CM_STATE_ESTABLISHED; |
| 1974 | if (datasize) { |
| 1975 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize; |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1976 | handle_rcv_mpa(cm_node, skb); |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1977 | } else { /* rcvd ACK only */ |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1978 | dev_kfree_skb_any(skb); |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1979 | } |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1980 | break; |
| 1981 | case NES_CM_STATE_ESTABLISHED: |
| 1982 | /* Passive OPEN */ |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1983 | cleanup_retrans_entry(cm_node); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1984 | if (datasize) { |
| 1985 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize; |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1986 | handle_rcv_mpa(cm_node, skb); |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1987 | } else { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1988 | drop_packet(skb); |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1989 | } |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1990 | break; |
| 1991 | case NES_CM_STATE_MPAREQ_SENT: |
| 1992 | cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq); |
| 1993 | if (datasize) { |
| 1994 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize; |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 1995 | handle_rcv_mpa(cm_node, skb); |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1996 | } else { /* Could be just an ack pkt.. */ |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1997 | dev_kfree_skb_any(skb); |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 1998 | } |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 1999 | break; |
Faisal Latif | abb7725 | 2008-11-21 20:50:52 -0600 | [diff] [blame] | 2000 | case NES_CM_STATE_LISTENING: |
Faisal Latif | 886f98a | 2009-12-09 15:54:18 -0800 | [diff] [blame] | 2001 | cleanup_retrans_entry(cm_node); |
| 2002 | cm_node->state = NES_CM_STATE_CLOSED; |
| 2003 | send_reset(cm_node, skb); |
| 2004 | break; |
Faisal Latif | abb7725 | 2008-11-21 20:50:52 -0600 | [diff] [blame] | 2005 | case NES_CM_STATE_CLOSED: |
| 2006 | cleanup_retrans_entry(cm_node); |
Faisal Latif | 886f98a | 2009-12-09 15:54:18 -0800 | [diff] [blame] | 2007 | add_ref_cm_node(cm_node); |
Faisal Latif | abb7725 | 2008-11-21 20:50:52 -0600 | [diff] [blame] | 2008 | send_reset(cm_node, skb); |
| 2009 | break; |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 2010 | case NES_CM_STATE_LAST_ACK: |
Faisal Latif | 109d67e | 2009-04-27 13:41:06 -0700 | [diff] [blame] | 2011 | case NES_CM_STATE_CLOSING: |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 2012 | cleanup_retrans_entry(cm_node); |
| 2013 | cm_node->state = NES_CM_STATE_CLOSED; |
| 2014 | cm_node->cm_id->rem_ref(cm_node->cm_id); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 2015 | rem_ref_cm_node(cm_node->cm_core, cm_node); |
| 2016 | drop_packet(skb); |
| 2017 | break; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2018 | case NES_CM_STATE_FIN_WAIT1: |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 2019 | cleanup_retrans_entry(cm_node); |
| 2020 | drop_packet(skb); |
| 2021 | cm_node->state = NES_CM_STATE_FIN_WAIT2; |
| 2022 | break; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2023 | case NES_CM_STATE_SYN_SENT: |
| 2024 | case NES_CM_STATE_FIN_WAIT2: |
| 2025 | case NES_CM_STATE_TSA: |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2026 | case NES_CM_STATE_MPAREQ_RCVD: |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2027 | case NES_CM_STATE_UNKNOWN: |
| 2028 | default: |
Faisal Latif | 109d67e | 2009-04-27 13:41:06 -0700 | [diff] [blame] | 2029 | cleanup_retrans_entry(cm_node); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2030 | drop_packet(skb); |
| 2031 | break; |
| 2032 | } |
Faisal Latif | 109d67e | 2009-04-27 13:41:06 -0700 | [diff] [blame] | 2033 | return ret; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2034 | } |
| 2035 | |
| 2036 | |
| 2037 | |
| 2038 | static int handle_tcp_options(struct nes_cm_node *cm_node, struct tcphdr *tcph, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2039 | struct sk_buff *skb, int optionsize, int passive) |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2040 | { |
| 2041 | u8 *optionsloc = (u8 *)&tcph[1]; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2042 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2043 | if (optionsize) { |
| 2044 | if (process_options(cm_node, optionsloc, optionsize, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2045 | (u32)tcph->syn)) { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2046 | nes_debug(NES_DBG_CM, "%s: Node %p, Sending RESET\n", |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2047 | __func__, cm_node); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2048 | if (passive) |
Faisal Latif | abb7725 | 2008-11-21 20:50:52 -0600 | [diff] [blame] | 2049 | passive_open_err(cm_node, skb, 1); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2050 | else |
Faisal Latif | abb7725 | 2008-11-21 20:50:52 -0600 | [diff] [blame] | 2051 | active_open_err(cm_node, skb, 1); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2052 | return 1; |
| 2053 | } |
| 2054 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2055 | |
| 2056 | cm_node->tcp_cntxt.snd_wnd = ntohs(tcph->window) << |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2057 | cm_node->tcp_cntxt.snd_wscale; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2058 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2059 | if (cm_node->tcp_cntxt.snd_wnd > cm_node->tcp_cntxt.max_snd_wnd) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2060 | cm_node->tcp_cntxt.max_snd_wnd = cm_node->tcp_cntxt.snd_wnd; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2061 | return 0; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2062 | } |
| 2063 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2064 | /* |
| 2065 | * active_open_err() will send reset() if flag set.. |
| 2066 | * It will also send ABORT event. |
| 2067 | */ |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2068 | static void active_open_err(struct nes_cm_node *cm_node, struct sk_buff *skb, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2069 | int reset) |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2070 | { |
| 2071 | cleanup_retrans_entry(cm_node); |
| 2072 | if (reset) { |
| 2073 | nes_debug(NES_DBG_CM, "ERROR active err called for cm_node=%p, " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2074 | "state=%d\n", cm_node, cm_node->state); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2075 | add_ref_cm_node(cm_node); |
| 2076 | send_reset(cm_node, skb); |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2077 | } else { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2078 | dev_kfree_skb_any(skb); |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2079 | } |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2080 | |
| 2081 | cm_node->state = NES_CM_STATE_CLOSED; |
| 2082 | create_event(cm_node, NES_CM_EVENT_ABORTED); |
| 2083 | } |
| 2084 | |
| 2085 | /* |
| 2086 | * passive_open_err() will either do a reset() or will free up the skb and |
| 2087 | * remove the cm_node. |
| 2088 | */ |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2089 | static void passive_open_err(struct nes_cm_node *cm_node, struct sk_buff *skb, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2090 | int reset) |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2091 | { |
| 2092 | cleanup_retrans_entry(cm_node); |
| 2093 | cm_node->state = NES_CM_STATE_CLOSED; |
| 2094 | if (reset) { |
| 2095 | nes_debug(NES_DBG_CM, "passive_open_err sending RST for " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2096 | "cm_node=%p state =%d\n", cm_node, cm_node->state); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2097 | send_reset(cm_node, skb); |
| 2098 | } else { |
| 2099 | dev_kfree_skb_any(skb); |
| 2100 | rem_ref_cm_node(cm_node->cm_core, cm_node); |
| 2101 | } |
| 2102 | } |
| 2103 | |
| 2104 | /* |
| 2105 | * free_retrans_entry() routines assumes that the retrans_list_lock has |
| 2106 | * been acquired before calling. |
| 2107 | */ |
| 2108 | static void free_retrans_entry(struct nes_cm_node *cm_node) |
| 2109 | { |
| 2110 | struct nes_timer_entry *send_entry; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2111 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2112 | send_entry = cm_node->send_entry; |
| 2113 | if (send_entry) { |
| 2114 | cm_node->send_entry = NULL; |
| 2115 | dev_kfree_skb_any(send_entry->skb); |
| 2116 | kfree(send_entry); |
| 2117 | rem_ref_cm_node(cm_node->cm_core, cm_node); |
| 2118 | } |
| 2119 | } |
| 2120 | |
| 2121 | static void cleanup_retrans_entry(struct nes_cm_node *cm_node) |
| 2122 | { |
| 2123 | unsigned long flags; |
| 2124 | |
| 2125 | spin_lock_irqsave(&cm_node->retrans_list_lock, flags); |
| 2126 | free_retrans_entry(cm_node); |
| 2127 | spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags); |
| 2128 | } |
| 2129 | |
| 2130 | /** |
| 2131 | * process_packet |
| 2132 | * Returns skb if to be freed, else it will return NULL if already used.. |
| 2133 | */ |
| 2134 | static void process_packet(struct nes_cm_node *cm_node, struct sk_buff *skb, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2135 | struct nes_cm_core *cm_core) |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2136 | { |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2137 | enum nes_tcpip_pkt_type pkt_type = NES_PKT_TYPE_UNKNOWN; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2138 | struct tcphdr *tcph = tcp_hdr(skb); |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2139 | u32 fin_set = 0; |
Faisal Latif | 109d67e | 2009-04-27 13:41:06 -0700 | [diff] [blame] | 2140 | int ret = 0; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2141 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2142 | skb_pull(skb, ip_hdr(skb)->ihl << 2); |
| 2143 | |
| 2144 | nes_debug(NES_DBG_CM, "process_packet: cm_node=%p state =%d syn=%d " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2145 | "ack=%d rst=%d fin=%d\n", cm_node, cm_node->state, tcph->syn, |
| 2146 | tcph->ack, tcph->rst, tcph->fin); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2147 | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2148 | if (tcph->rst) { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2149 | pkt_type = NES_PKT_TYPE_RST; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2150 | } else if (tcph->syn) { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2151 | pkt_type = NES_PKT_TYPE_SYN; |
| 2152 | if (tcph->ack) |
| 2153 | pkt_type = NES_PKT_TYPE_SYNACK; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2154 | } else if (tcph->ack) { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2155 | pkt_type = NES_PKT_TYPE_ACK; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2156 | } |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 2157 | if (tcph->fin) |
| 2158 | fin_set = 1; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2159 | |
| 2160 | switch (pkt_type) { |
| 2161 | case NES_PKT_TYPE_SYN: |
| 2162 | handle_syn_pkt(cm_node, skb, tcph); |
| 2163 | break; |
| 2164 | case NES_PKT_TYPE_SYNACK: |
| 2165 | handle_synack_pkt(cm_node, skb, tcph); |
| 2166 | break; |
| 2167 | case NES_PKT_TYPE_ACK: |
Faisal Latif | 109d67e | 2009-04-27 13:41:06 -0700 | [diff] [blame] | 2168 | ret = handle_ack_pkt(cm_node, skb, tcph); |
| 2169 | if (fin_set && !ret) |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 2170 | handle_fin_pkt(cm_node); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2171 | break; |
| 2172 | case NES_PKT_TYPE_RST: |
| 2173 | handle_rst_pkt(cm_node, skb, tcph); |
| 2174 | break; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2175 | default: |
Faisal Latif | 109d67e | 2009-04-27 13:41:06 -0700 | [diff] [blame] | 2176 | if ((fin_set) && (!check_seq(cm_node, tcph, skb))) |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 2177 | handle_fin_pkt(cm_node); |
Faisal Latif | 109d67e | 2009-04-27 13:41:06 -0700 | [diff] [blame] | 2178 | drop_packet(skb); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2179 | break; |
| 2180 | } |
| 2181 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2182 | |
| 2183 | /** |
| 2184 | * mini_cm_listen - create a listen node with params |
| 2185 | */ |
| 2186 | static struct nes_cm_listener *mini_cm_listen(struct nes_cm_core *cm_core, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2187 | struct nes_vnic *nesvnic, struct nes_cm_info *cm_info) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2188 | { |
| 2189 | struct nes_cm_listener *listener; |
| 2190 | unsigned long flags; |
| 2191 | |
| 2192 | nes_debug(NES_DBG_CM, "Search for 0x%08x : 0x%04x\n", |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2193 | cm_info->loc_addr, cm_info->loc_port); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2194 | |
| 2195 | /* cannot have multiple matching listeners */ |
| 2196 | listener = find_listener(cm_core, htonl(cm_info->loc_addr), |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2197 | htons(cm_info->loc_port), NES_CM_LISTENER_EITHER_STATE); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2198 | if (listener && listener->listener_state == NES_CM_LISTENER_ACTIVE_STATE) { |
| 2199 | /* find automatically incs ref count ??? */ |
| 2200 | atomic_dec(&listener->ref_count); |
| 2201 | nes_debug(NES_DBG_CM, "Not creating listener since it already exists\n"); |
| 2202 | return NULL; |
| 2203 | } |
| 2204 | |
| 2205 | if (!listener) { |
| 2206 | /* create a CM listen node (1/2 node to compare incoming traffic to) */ |
| 2207 | listener = kzalloc(sizeof(*listener), GFP_ATOMIC); |
| 2208 | if (!listener) { |
| 2209 | nes_debug(NES_DBG_CM, "Not creating listener memory allocation failed\n"); |
| 2210 | return NULL; |
| 2211 | } |
| 2212 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2213 | listener->loc_addr = htonl(cm_info->loc_addr); |
| 2214 | listener->loc_port = htons(cm_info->loc_port); |
| 2215 | listener->reused_node = 0; |
| 2216 | |
| 2217 | atomic_set(&listener->ref_count, 1); |
| 2218 | } |
| 2219 | /* pasive case */ |
| 2220 | /* find already inc'ed the ref count */ |
| 2221 | else { |
| 2222 | listener->reused_node = 1; |
| 2223 | } |
| 2224 | |
| 2225 | listener->cm_id = cm_info->cm_id; |
| 2226 | atomic_set(&listener->pend_accepts_cnt, 0); |
| 2227 | listener->cm_core = cm_core; |
| 2228 | listener->nesvnic = nesvnic; |
| 2229 | atomic_inc(&cm_core->node_cnt); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2230 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2231 | listener->conn_type = cm_info->conn_type; |
| 2232 | listener->backlog = cm_info->backlog; |
| 2233 | listener->listener_state = NES_CM_LISTENER_ACTIVE_STATE; |
| 2234 | |
| 2235 | if (!listener->reused_node) { |
| 2236 | spin_lock_irqsave(&cm_core->listen_list_lock, flags); |
| 2237 | list_add(&listener->list, &cm_core->listen_list.list); |
| 2238 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); |
| 2239 | atomic_inc(&cm_core->listen_node_cnt); |
| 2240 | } |
| 2241 | |
| 2242 | nes_debug(NES_DBG_CM, "Api - listen(): addr=0x%08X, port=0x%04x," |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2243 | " listener = %p, backlog = %d, cm_id = %p.\n", |
| 2244 | cm_info->loc_addr, cm_info->loc_port, |
| 2245 | listener, listener->backlog, listener->cm_id); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2246 | |
| 2247 | return listener; |
| 2248 | } |
| 2249 | |
| 2250 | |
| 2251 | /** |
| 2252 | * mini_cm_connect - make a connection node with params |
| 2253 | */ |
Faisal Latif | 54c86a8 | 2008-09-30 14:47:27 -0700 | [diff] [blame] | 2254 | static struct nes_cm_node *mini_cm_connect(struct nes_cm_core *cm_core, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2255 | struct nes_vnic *nesvnic, u16 private_data_len, |
| 2256 | void *private_data, struct nes_cm_info *cm_info) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2257 | { |
| 2258 | int ret = 0; |
| 2259 | struct nes_cm_node *cm_node; |
| 2260 | struct nes_cm_listener *loopbackremotelistener; |
| 2261 | struct nes_cm_node *loopbackremotenode; |
| 2262 | struct nes_cm_info loopback_cm_info; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2263 | u8 *start_buff; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2264 | |
| 2265 | /* create a CM connection node */ |
| 2266 | cm_node = make_cm_node(cm_core, nesvnic, cm_info, NULL); |
| 2267 | if (!cm_node) |
| 2268 | return NULL; |
| 2269 | |
Glenn Streiff | 7495ab6 | 2008-04-29 13:46:54 -0700 | [diff] [blame] | 2270 | /* set our node side to client (active) side */ |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2271 | cm_node->tcp_cntxt.client = 1; |
| 2272 | cm_node->tcp_cntxt.rcv_wscale = NES_CM_DEFAULT_RCV_WND_SCALE; |
| 2273 | |
| 2274 | if (cm_info->loc_addr == cm_info->rem_addr) { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2275 | loopbackremotelistener = find_listener(cm_core, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2276 | ntohl(nesvnic->local_ipaddr), cm_node->rem_port, |
| 2277 | NES_CM_LISTENER_ACTIVE_STATE); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2278 | if (loopbackremotelistener == NULL) { |
| 2279 | create_event(cm_node, NES_CM_EVENT_ABORTED); |
| 2280 | } else { |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2281 | loopback_cm_info = *cm_info; |
| 2282 | loopback_cm_info.loc_port = cm_info->rem_port; |
| 2283 | loopback_cm_info.rem_port = cm_info->loc_port; |
| 2284 | loopback_cm_info.cm_id = loopbackremotelistener->cm_id; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2285 | loopbackremotenode = make_cm_node(cm_core, nesvnic, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2286 | &loopback_cm_info, loopbackremotelistener); |
Faisal Latif | 79fc3d7 | 2009-04-08 14:22:20 -0700 | [diff] [blame] | 2287 | if (!loopbackremotenode) { |
| 2288 | rem_ref_cm_node(cm_node->cm_core, cm_node); |
| 2289 | return NULL; |
| 2290 | } |
| 2291 | atomic_inc(&cm_loopbacks); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2292 | loopbackremotenode->loopbackpartner = cm_node; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2293 | loopbackremotenode->tcp_cntxt.rcv_wscale = |
| 2294 | NES_CM_DEFAULT_RCV_WND_SCALE; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2295 | cm_node->loopbackpartner = loopbackremotenode; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2296 | memcpy(loopbackremotenode->mpa_frame_buf, private_data, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2297 | private_data_len); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2298 | loopbackremotenode->mpa_frame_size = private_data_len; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2299 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2300 | /* we are done handling this state. */ |
| 2301 | /* set node to a TSA state */ |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2302 | cm_node->state = NES_CM_STATE_TSA; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2303 | cm_node->tcp_cntxt.rcv_nxt = |
| 2304 | loopbackremotenode->tcp_cntxt.loc_seq_num; |
| 2305 | loopbackremotenode->tcp_cntxt.rcv_nxt = |
| 2306 | cm_node->tcp_cntxt.loc_seq_num; |
| 2307 | cm_node->tcp_cntxt.max_snd_wnd = |
| 2308 | loopbackremotenode->tcp_cntxt.rcv_wnd; |
| 2309 | loopbackremotenode->tcp_cntxt.max_snd_wnd = |
| 2310 | cm_node->tcp_cntxt.rcv_wnd; |
| 2311 | cm_node->tcp_cntxt.snd_wnd = |
| 2312 | loopbackremotenode->tcp_cntxt.rcv_wnd; |
| 2313 | loopbackremotenode->tcp_cntxt.snd_wnd = |
| 2314 | cm_node->tcp_cntxt.rcv_wnd; |
| 2315 | cm_node->tcp_cntxt.snd_wscale = |
| 2316 | loopbackremotenode->tcp_cntxt.rcv_wscale; |
| 2317 | loopbackremotenode->tcp_cntxt.snd_wscale = |
| 2318 | cm_node->tcp_cntxt.rcv_wscale; |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 2319 | loopbackremotenode->state = NES_CM_STATE_MPAREQ_RCVD; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2320 | create_event(loopbackremotenode, NES_CM_EVENT_MPA_REQ); |
| 2321 | } |
| 2322 | return cm_node; |
| 2323 | } |
| 2324 | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2325 | start_buff = &cm_node->mpa_frame_buf[0] + sizeof(struct ietf_mpa_v2); |
| 2326 | cm_node->mpa_frame_size = private_data_len; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2327 | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2328 | memcpy(start_buff, private_data, private_data_len); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2329 | |
| 2330 | /* send a syn and goto syn sent state */ |
| 2331 | cm_node->state = NES_CM_STATE_SYN_SENT; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2332 | ret = send_syn(cm_node, 0, NULL); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2333 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2334 | if (ret) { |
| 2335 | /* error in sending the syn free up the cm_node struct */ |
| 2336 | nes_debug(NES_DBG_CM, "Api - connect() FAILED: dest " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2337 | "addr=0x%08X, port=0x%04x, cm_node=%p, cm_id = %p.\n", |
| 2338 | cm_node->rem_addr, cm_node->rem_port, cm_node, |
| 2339 | cm_node->cm_id); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2340 | rem_ref_cm_node(cm_node->cm_core, cm_node); |
| 2341 | cm_node = NULL; |
| 2342 | } |
| 2343 | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2344 | if (cm_node) { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2345 | nes_debug(NES_DBG_CM, "Api - connect(): dest addr=0x%08X," |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2346 | "port=0x%04x, cm_node=%p, cm_id = %p.\n", |
| 2347 | cm_node->rem_addr, cm_node->rem_port, cm_node, |
| 2348 | cm_node->cm_id); |
| 2349 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2350 | |
| 2351 | return cm_node; |
| 2352 | } |
| 2353 | |
| 2354 | |
| 2355 | /** |
| 2356 | * mini_cm_accept - accept a connection |
| 2357 | * This function is never called |
| 2358 | */ |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2359 | static int mini_cm_accept(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2360 | { |
| 2361 | return 0; |
| 2362 | } |
| 2363 | |
| 2364 | |
| 2365 | /** |
| 2366 | * mini_cm_reject - reject and teardown a connection |
| 2367 | */ |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2368 | static int mini_cm_reject(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2369 | { |
| 2370 | int ret = 0; |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 2371 | int err = 0; |
Faisal Latif | 183ecfa | 2008-11-21 20:50:46 -0600 | [diff] [blame] | 2372 | int passive_state; |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 2373 | struct nes_cm_event event; |
| 2374 | struct iw_cm_id *cm_id = cm_node->cm_id; |
| 2375 | struct nes_cm_node *loopback = cm_node->loopbackpartner; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2376 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2377 | nes_debug(NES_DBG_CM, "%s cm_node=%p type=%d state=%d\n", |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2378 | __func__, cm_node, cm_node->tcp_cntxt.client, cm_node->state); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2379 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2380 | if (cm_node->tcp_cntxt.client) |
| 2381 | return ret; |
| 2382 | cleanup_retrans_entry(cm_node); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2383 | |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 2384 | if (!loopback) { |
| 2385 | passive_state = atomic_add_return(1, &cm_node->passive_state); |
| 2386 | if (passive_state == NES_SEND_RESET_EVENT) { |
| 2387 | cm_node->state = NES_CM_STATE_CLOSED; |
| 2388 | rem_ref_cm_node(cm_core, cm_node); |
| 2389 | } else { |
Faisal Latif | c5a7d48 | 2009-12-09 15:54:08 -0800 | [diff] [blame] | 2390 | if (cm_node->state == NES_CM_STATE_LISTENER_DESTROYED) { |
| 2391 | rem_ref_cm_node(cm_core, cm_node); |
| 2392 | } else { |
| 2393 | ret = send_mpa_reject(cm_node); |
| 2394 | if (ret) { |
| 2395 | cm_node->state = NES_CM_STATE_CLOSED; |
| 2396 | err = send_reset(cm_node, NULL); |
| 2397 | if (err) |
| 2398 | WARN_ON(1); |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2399 | } else { |
Faisal Latif | c5a7d48 | 2009-12-09 15:54:08 -0800 | [diff] [blame] | 2400 | cm_id->add_ref(cm_id); |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2401 | } |
Faisal Latif | c5a7d48 | 2009-12-09 15:54:08 -0800 | [diff] [blame] | 2402 | } |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 2403 | } |
| 2404 | } else { |
| 2405 | cm_node->cm_id = NULL; |
Faisal Latif | c5a7d48 | 2009-12-09 15:54:08 -0800 | [diff] [blame] | 2406 | if (cm_node->state == NES_CM_STATE_LISTENER_DESTROYED) { |
| 2407 | rem_ref_cm_node(cm_core, cm_node); |
| 2408 | rem_ref_cm_node(cm_core, loopback); |
| 2409 | } else { |
| 2410 | event.cm_node = loopback; |
| 2411 | event.cm_info.rem_addr = loopback->rem_addr; |
| 2412 | event.cm_info.loc_addr = loopback->loc_addr; |
| 2413 | event.cm_info.rem_port = loopback->rem_port; |
| 2414 | event.cm_info.loc_port = loopback->loc_port; |
| 2415 | event.cm_info.cm_id = loopback->cm_id; |
| 2416 | cm_event_mpa_reject(&event); |
| 2417 | rem_ref_cm_node(cm_core, cm_node); |
| 2418 | loopback->state = NES_CM_STATE_CLOSING; |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 2419 | |
Faisal Latif | c5a7d48 | 2009-12-09 15:54:08 -0800 | [diff] [blame] | 2420 | cm_id = loopback->cm_id; |
| 2421 | rem_ref_cm_node(cm_core, loopback); |
| 2422 | cm_id->rem_ref(cm_id); |
| 2423 | } |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 2424 | } |
| 2425 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2426 | return ret; |
| 2427 | } |
| 2428 | |
| 2429 | |
| 2430 | /** |
| 2431 | * mini_cm_close |
| 2432 | */ |
Roland Dreier | 1a855fb | 2008-04-16 21:01:09 -0700 | [diff] [blame] | 2433 | static int mini_cm_close(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2434 | { |
| 2435 | int ret = 0; |
| 2436 | |
| 2437 | if (!cm_core || !cm_node) |
| 2438 | return -EINVAL; |
| 2439 | |
| 2440 | switch (cm_node->state) { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2441 | case NES_CM_STATE_SYN_RCVD: |
| 2442 | case NES_CM_STATE_SYN_SENT: |
| 2443 | case NES_CM_STATE_ONE_SIDE_ESTABLISHED: |
| 2444 | case NES_CM_STATE_ESTABLISHED: |
| 2445 | case NES_CM_STATE_ACCEPTING: |
| 2446 | case NES_CM_STATE_MPAREQ_SENT: |
| 2447 | case NES_CM_STATE_MPAREQ_RCVD: |
| 2448 | cleanup_retrans_entry(cm_node); |
| 2449 | send_reset(cm_node, NULL); |
| 2450 | break; |
| 2451 | case NES_CM_STATE_CLOSE_WAIT: |
| 2452 | cm_node->state = NES_CM_STATE_LAST_ACK; |
| 2453 | send_fin(cm_node, NULL); |
| 2454 | break; |
| 2455 | case NES_CM_STATE_FIN_WAIT1: |
| 2456 | case NES_CM_STATE_FIN_WAIT2: |
| 2457 | case NES_CM_STATE_LAST_ACK: |
| 2458 | case NES_CM_STATE_TIME_WAIT: |
| 2459 | case NES_CM_STATE_CLOSING: |
| 2460 | ret = -1; |
| 2461 | break; |
| 2462 | case NES_CM_STATE_LISTENING: |
Faisal Latif | 886f98a | 2009-12-09 15:54:18 -0800 | [diff] [blame] | 2463 | cleanup_retrans_entry(cm_node); |
| 2464 | send_reset(cm_node, NULL); |
| 2465 | break; |
| 2466 | case NES_CM_STATE_MPAREJ_RCVD: |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2467 | case NES_CM_STATE_UNKNOWN: |
| 2468 | case NES_CM_STATE_INITED: |
| 2469 | case NES_CM_STATE_CLOSED: |
Faisal Latif | c5a7d48 | 2009-12-09 15:54:08 -0800 | [diff] [blame] | 2470 | case NES_CM_STATE_LISTENER_DESTROYED: |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2471 | ret = rem_ref_cm_node(cm_core, cm_node); |
| 2472 | break; |
| 2473 | case NES_CM_STATE_TSA: |
| 2474 | if (cm_node->send_entry) |
| 2475 | printk(KERN_ERR "ERROR Close got called from STATE_TSA " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2476 | "send_entry=%p\n", cm_node->send_entry); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2477 | ret = rem_ref_cm_node(cm_core, cm_node); |
| 2478 | break; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2479 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2480 | return ret; |
| 2481 | } |
| 2482 | |
| 2483 | |
| 2484 | /** |
| 2485 | * recv_pkt - recv an ETHERNET packet, and process it through CM |
| 2486 | * node state machine |
| 2487 | */ |
Faisal Latif | 4a14f6a | 2008-11-21 20:50:49 -0600 | [diff] [blame] | 2488 | static int mini_cm_recv_pkt(struct nes_cm_core *cm_core, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2489 | struct nes_vnic *nesvnic, struct sk_buff *skb) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2490 | { |
| 2491 | struct nes_cm_node *cm_node = NULL; |
| 2492 | struct nes_cm_listener *listener = NULL; |
| 2493 | struct iphdr *iph; |
| 2494 | struct tcphdr *tcph; |
| 2495 | struct nes_cm_info nfo; |
Faisal Latif | 4a14f6a | 2008-11-21 20:50:49 -0600 | [diff] [blame] | 2496 | int skb_handled = 1; |
Harvey Harrison | 03080e5 | 2009-01-10 21:45:42 -0800 | [diff] [blame] | 2497 | __be32 tmp_daddr, tmp_saddr; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2498 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2499 | if (!skb) |
Faisal Latif | 4a14f6a | 2008-11-21 20:50:49 -0600 | [diff] [blame] | 2500 | return 0; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2501 | if (skb->len < sizeof(struct iphdr) + sizeof(struct tcphdr)) |
Faisal Latif | 4a14f6a | 2008-11-21 20:50:49 -0600 | [diff] [blame] | 2502 | return 0; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2503 | |
| 2504 | iph = (struct iphdr *)skb->data; |
| 2505 | tcph = (struct tcphdr *)(skb->data + sizeof(struct iphdr)); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2506 | |
| 2507 | nfo.loc_addr = ntohl(iph->daddr); |
| 2508 | nfo.loc_port = ntohs(tcph->dest); |
| 2509 | nfo.rem_addr = ntohl(iph->saddr); |
| 2510 | nfo.rem_port = ntohs(tcph->source); |
| 2511 | |
Harvey Harrison | 03080e5 | 2009-01-10 21:45:42 -0800 | [diff] [blame] | 2512 | tmp_daddr = cpu_to_be32(iph->daddr); |
| 2513 | tmp_saddr = cpu_to_be32(iph->saddr); |
| 2514 | |
Harvey Harrison | 6377943 | 2008-10-31 00:56:00 -0700 | [diff] [blame] | 2515 | nes_debug(NES_DBG_CM, "Received packet: dest=%pI4:0x%04X src=%pI4:0x%04X\n", |
Harvey Harrison | 03080e5 | 2009-01-10 21:45:42 -0800 | [diff] [blame] | 2516 | &tmp_daddr, tcph->dest, &tmp_saddr, tcph->source); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2517 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2518 | do { |
| 2519 | cm_node = find_node(cm_core, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2520 | nfo.rem_port, nfo.rem_addr, |
| 2521 | nfo.loc_port, nfo.loc_addr); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2522 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2523 | if (!cm_node) { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2524 | /* Only type of packet accepted are for */ |
| 2525 | /* the PASSIVE open (syn only) */ |
| 2526 | if ((!tcph->syn) || (tcph->ack)) { |
Faisal Latif | 4a14f6a | 2008-11-21 20:50:49 -0600 | [diff] [blame] | 2527 | skb_handled = 0; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2528 | break; |
| 2529 | } |
| 2530 | listener = find_listener(cm_core, nfo.loc_addr, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2531 | nfo.loc_port, |
| 2532 | NES_CM_LISTENER_ACTIVE_STATE); |
Faisal Latif | 4a14f6a | 2008-11-21 20:50:49 -0600 | [diff] [blame] | 2533 | if (!listener) { |
| 2534 | nfo.cm_id = NULL; |
| 2535 | nfo.conn_type = 0; |
| 2536 | nes_debug(NES_DBG_CM, "Unable to find listener for the pkt\n"); |
| 2537 | skb_handled = 0; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2538 | break; |
| 2539 | } |
Faisal Latif | 4a14f6a | 2008-11-21 20:50:49 -0600 | [diff] [blame] | 2540 | nfo.cm_id = listener->cm_id; |
| 2541 | nfo.conn_type = listener->conn_type; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2542 | cm_node = make_cm_node(cm_core, nesvnic, &nfo, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2543 | listener); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2544 | if (!cm_node) { |
| 2545 | nes_debug(NES_DBG_CM, "Unable to allocate " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2546 | "node\n"); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2547 | cm_packets_dropped++; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2548 | atomic_dec(&listener->ref_count); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2549 | dev_kfree_skb_any(skb); |
| 2550 | break; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2551 | } |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2552 | if (!tcph->rst && !tcph->fin) { |
| 2553 | cm_node->state = NES_CM_STATE_LISTENING; |
| 2554 | } else { |
| 2555 | cm_packets_dropped++; |
| 2556 | rem_ref_cm_node(cm_core, cm_node); |
| 2557 | dev_kfree_skb_any(skb); |
| 2558 | break; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2559 | } |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2560 | add_ref_cm_node(cm_node); |
| 2561 | } else if (cm_node->state == NES_CM_STATE_TSA) { |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2562 | rem_ref_cm_node(cm_core, cm_node); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2563 | atomic_inc(&cm_accel_dropped_pkts); |
| 2564 | dev_kfree_skb_any(skb); |
| 2565 | break; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2566 | } |
Faisal Latif | 4a14f6a | 2008-11-21 20:50:49 -0600 | [diff] [blame] | 2567 | skb_reset_network_header(skb); |
| 2568 | skb_set_transport_header(skb, sizeof(*tcph)); |
| 2569 | skb->len = ntohs(iph->tot_len); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2570 | process_packet(cm_node, skb, cm_core); |
| 2571 | rem_ref_cm_node(cm_core, cm_node); |
| 2572 | } while (0); |
Faisal Latif | 4a14f6a | 2008-11-21 20:50:49 -0600 | [diff] [blame] | 2573 | return skb_handled; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2574 | } |
| 2575 | |
| 2576 | |
| 2577 | /** |
| 2578 | * nes_cm_alloc_core - allocate a top level instance of a cm core |
| 2579 | */ |
Roland Dreier | 1a855fb | 2008-04-16 21:01:09 -0700 | [diff] [blame] | 2580 | static struct nes_cm_core *nes_cm_alloc_core(void) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2581 | { |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2582 | struct nes_cm_core *cm_core; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2583 | |
| 2584 | /* setup the CM core */ |
| 2585 | /* alloc top level core control structure */ |
| 2586 | cm_core = kzalloc(sizeof(*cm_core), GFP_KERNEL); |
| 2587 | if (!cm_core) |
| 2588 | return NULL; |
| 2589 | |
| 2590 | INIT_LIST_HEAD(&cm_core->connected_nodes); |
| 2591 | init_timer(&cm_core->tcp_timer); |
| 2592 | cm_core->tcp_timer.function = nes_cm_timer_tick; |
| 2593 | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2594 | cm_core->mtu = NES_CM_DEFAULT_MTU; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2595 | cm_core->state = NES_CM_STATE_INITED; |
| 2596 | cm_core->free_tx_pkt_max = NES_CM_DEFAULT_FREE_PKTS; |
| 2597 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2598 | atomic_set(&cm_core->events_posted, 0); |
| 2599 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2600 | cm_core->api = &nes_cm_api; |
| 2601 | |
| 2602 | spin_lock_init(&cm_core->ht_lock); |
| 2603 | spin_lock_init(&cm_core->listen_list_lock); |
| 2604 | |
| 2605 | INIT_LIST_HEAD(&cm_core->listen_list.list); |
| 2606 | |
| 2607 | nes_debug(NES_DBG_CM, "Init CM Core completed -- cm_core=%p\n", cm_core); |
| 2608 | |
| 2609 | nes_debug(NES_DBG_CM, "Enable QUEUE EVENTS\n"); |
| 2610 | cm_core->event_wq = create_singlethread_workqueue("nesewq"); |
| 2611 | cm_core->post_event = nes_cm_post_event; |
| 2612 | nes_debug(NES_DBG_CM, "Enable QUEUE DISCONNECTS\n"); |
| 2613 | cm_core->disconn_wq = create_singlethread_workqueue("nesdwq"); |
| 2614 | |
| 2615 | print_core(cm_core); |
| 2616 | return cm_core; |
| 2617 | } |
| 2618 | |
| 2619 | |
| 2620 | /** |
| 2621 | * mini_cm_dealloc_core - deallocate a top level instance of a cm core |
| 2622 | */ |
Roland Dreier | 1a855fb | 2008-04-16 21:01:09 -0700 | [diff] [blame] | 2623 | static int mini_cm_dealloc_core(struct nes_cm_core *cm_core) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2624 | { |
| 2625 | nes_debug(NES_DBG_CM, "De-Alloc CM Core (%p)\n", cm_core); |
| 2626 | |
| 2627 | if (!cm_core) |
| 2628 | return -EINVAL; |
| 2629 | |
| 2630 | barrier(); |
| 2631 | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2632 | if (timer_pending(&cm_core->tcp_timer)) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2633 | del_timer(&cm_core->tcp_timer); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2634 | |
| 2635 | destroy_workqueue(cm_core->event_wq); |
| 2636 | destroy_workqueue(cm_core->disconn_wq); |
| 2637 | nes_debug(NES_DBG_CM, "\n"); |
| 2638 | kfree(cm_core); |
| 2639 | |
| 2640 | return 0; |
| 2641 | } |
| 2642 | |
| 2643 | |
| 2644 | /** |
| 2645 | * mini_cm_get |
| 2646 | */ |
Roland Dreier | 1a855fb | 2008-04-16 21:01:09 -0700 | [diff] [blame] | 2647 | static int mini_cm_get(struct nes_cm_core *cm_core) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2648 | { |
| 2649 | return cm_core->state; |
| 2650 | } |
| 2651 | |
| 2652 | |
| 2653 | /** |
| 2654 | * mini_cm_set |
| 2655 | */ |
Roland Dreier | 1a855fb | 2008-04-16 21:01:09 -0700 | [diff] [blame] | 2656 | static int mini_cm_set(struct nes_cm_core *cm_core, u32 type, u32 value) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2657 | { |
| 2658 | int ret = 0; |
| 2659 | |
| 2660 | switch (type) { |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 2661 | case NES_CM_SET_PKT_SIZE: |
| 2662 | cm_core->mtu = value; |
| 2663 | break; |
| 2664 | case NES_CM_SET_FREE_PKT_Q_SIZE: |
| 2665 | cm_core->free_tx_pkt_max = value; |
| 2666 | break; |
| 2667 | default: |
| 2668 | /* unknown set option */ |
| 2669 | ret = -EINVAL; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2670 | } |
| 2671 | |
| 2672 | return ret; |
| 2673 | } |
| 2674 | |
| 2675 | |
| 2676 | /** |
| 2677 | * nes_cm_init_tsa_conn setup HW; MPA frames must be |
| 2678 | * successfully exchanged when this is called |
| 2679 | */ |
| 2680 | static int nes_cm_init_tsa_conn(struct nes_qp *nesqp, struct nes_cm_node *cm_node) |
| 2681 | { |
| 2682 | int ret = 0; |
| 2683 | |
| 2684 | if (!nesqp) |
| 2685 | return -EINVAL; |
| 2686 | |
| 2687 | nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_IPV4 | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2688 | NES_QPCONTEXT_MISC_NO_NAGLE | NES_QPCONTEXT_MISC_DO_NOT_FRAG | |
| 2689 | NES_QPCONTEXT_MISC_DROS); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2690 | |
| 2691 | if (cm_node->tcp_cntxt.snd_wscale || cm_node->tcp_cntxt.rcv_wscale) |
| 2692 | nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WSCALE); |
| 2693 | |
| 2694 | nesqp->nesqp_context->misc2 |= cpu_to_le32(64 << NES_QPCONTEXT_MISC2_TTL_SHIFT); |
| 2695 | |
| 2696 | nesqp->nesqp_context->mss |= cpu_to_le32(((u32)cm_node->tcp_cntxt.mss) << 16); |
| 2697 | |
| 2698 | nesqp->nesqp_context->tcp_state_flow_label |= cpu_to_le32( |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2699 | (u32)NES_QPCONTEXT_TCPSTATE_EST << NES_QPCONTEXT_TCPFLOW_TCP_STATE_SHIFT); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2700 | |
| 2701 | nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32( |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2702 | (cm_node->tcp_cntxt.snd_wscale << NES_QPCONTEXT_PDWSCALE_SND_WSCALE_SHIFT) & |
| 2703 | NES_QPCONTEXT_PDWSCALE_SND_WSCALE_MASK); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2704 | |
| 2705 | nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32( |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2706 | (cm_node->tcp_cntxt.rcv_wscale << NES_QPCONTEXT_PDWSCALE_RCV_WSCALE_SHIFT) & |
| 2707 | NES_QPCONTEXT_PDWSCALE_RCV_WSCALE_MASK); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2708 | |
| 2709 | nesqp->nesqp_context->keepalive = cpu_to_le32(0x80); |
| 2710 | nesqp->nesqp_context->ts_recent = 0; |
| 2711 | nesqp->nesqp_context->ts_age = 0; |
| 2712 | nesqp->nesqp_context->snd_nxt = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num); |
| 2713 | nesqp->nesqp_context->snd_wnd = cpu_to_le32(cm_node->tcp_cntxt.snd_wnd); |
| 2714 | nesqp->nesqp_context->rcv_nxt = cpu_to_le32(cm_node->tcp_cntxt.rcv_nxt); |
| 2715 | nesqp->nesqp_context->rcv_wnd = cpu_to_le32(cm_node->tcp_cntxt.rcv_wnd << |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2716 | cm_node->tcp_cntxt.rcv_wscale); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2717 | nesqp->nesqp_context->snd_max = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num); |
| 2718 | nesqp->nesqp_context->snd_una = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num); |
| 2719 | nesqp->nesqp_context->srtt = 0; |
| 2720 | nesqp->nesqp_context->rttvar = cpu_to_le32(0x6); |
| 2721 | nesqp->nesqp_context->ssthresh = cpu_to_le32(0x3FFFC000); |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2722 | nesqp->nesqp_context->cwnd = cpu_to_le32(2 * cm_node->tcp_cntxt.mss); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2723 | nesqp->nesqp_context->snd_wl1 = cpu_to_le32(cm_node->tcp_cntxt.rcv_nxt); |
| 2724 | nesqp->nesqp_context->snd_wl2 = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num); |
| 2725 | nesqp->nesqp_context->max_snd_wnd = cpu_to_le32(cm_node->tcp_cntxt.max_snd_wnd); |
| 2726 | |
| 2727 | nes_debug(NES_DBG_CM, "QP%u: rcv_nxt = 0x%08X, snd_nxt = 0x%08X," |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2728 | " Setting MSS to %u, PDWscale = 0x%08X, rcv_wnd = %u, context misc = 0x%08X.\n", |
| 2729 | nesqp->hwqp.qp_id, le32_to_cpu(nesqp->nesqp_context->rcv_nxt), |
| 2730 | le32_to_cpu(nesqp->nesqp_context->snd_nxt), |
| 2731 | cm_node->tcp_cntxt.mss, le32_to_cpu(nesqp->nesqp_context->pd_index_wscale), |
| 2732 | le32_to_cpu(nesqp->nesqp_context->rcv_wnd), |
| 2733 | le32_to_cpu(nesqp->nesqp_context->misc)); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2734 | nes_debug(NES_DBG_CM, " snd_wnd = 0x%08X.\n", le32_to_cpu(nesqp->nesqp_context->snd_wnd)); |
| 2735 | nes_debug(NES_DBG_CM, " snd_cwnd = 0x%08X.\n", le32_to_cpu(nesqp->nesqp_context->cwnd)); |
| 2736 | nes_debug(NES_DBG_CM, " max_swnd = 0x%08X.\n", le32_to_cpu(nesqp->nesqp_context->max_snd_wnd)); |
| 2737 | |
| 2738 | nes_debug(NES_DBG_CM, "Change cm_node state to TSA\n"); |
| 2739 | cm_node->state = NES_CM_STATE_TSA; |
| 2740 | |
| 2741 | return ret; |
| 2742 | } |
| 2743 | |
| 2744 | |
| 2745 | /** |
| 2746 | * nes_cm_disconn |
| 2747 | */ |
| 2748 | int nes_cm_disconn(struct nes_qp *nesqp) |
| 2749 | { |
Don Wood | 873fcdd | 2009-09-05 20:36:37 -0700 | [diff] [blame] | 2750 | struct disconn_work *work; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2751 | |
Don Wood | 873fcdd | 2009-09-05 20:36:37 -0700 | [diff] [blame] | 2752 | work = kzalloc(sizeof *work, GFP_ATOMIC); |
| 2753 | if (!work) |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2754 | return -ENOMEM; /* Timer will clean up */ |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2755 | |
Don Wood | 873fcdd | 2009-09-05 20:36:37 -0700 | [diff] [blame] | 2756 | nes_add_ref(&nesqp->ibqp); |
| 2757 | work->nesqp = nesqp; |
| 2758 | INIT_WORK(&work->work, nes_disconnect_worker); |
| 2759 | queue_work(g_cm_core->disconn_wq, &work->work); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2760 | return 0; |
| 2761 | } |
| 2762 | |
| 2763 | |
| 2764 | /** |
| 2765 | * nes_disconnect_worker |
| 2766 | */ |
Roland Dreier | 1a855fb | 2008-04-16 21:01:09 -0700 | [diff] [blame] | 2767 | static void nes_disconnect_worker(struct work_struct *work) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2768 | { |
Don Wood | 873fcdd | 2009-09-05 20:36:37 -0700 | [diff] [blame] | 2769 | struct disconn_work *dwork = container_of(work, struct disconn_work, work); |
| 2770 | struct nes_qp *nesqp = dwork->nesqp; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2771 | |
Don Wood | 873fcdd | 2009-09-05 20:36:37 -0700 | [diff] [blame] | 2772 | kfree(dwork); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2773 | nes_debug(NES_DBG_CM, "processing AEQE id 0x%04X for QP%u.\n", |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2774 | nesqp->last_aeq, nesqp->hwqp.qp_id); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2775 | nes_cm_disconn_true(nesqp); |
Don Wood | c4c3f27 | 2009-09-05 20:36:36 -0700 | [diff] [blame] | 2776 | nes_rem_ref(&nesqp->ibqp); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2777 | } |
| 2778 | |
| 2779 | |
| 2780 | /** |
| 2781 | * nes_cm_disconn_true |
| 2782 | */ |
Roland Dreier | 1a855fb | 2008-04-16 21:01:09 -0700 | [diff] [blame] | 2783 | static int nes_cm_disconn_true(struct nes_qp *nesqp) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2784 | { |
| 2785 | unsigned long flags; |
| 2786 | int ret = 0; |
| 2787 | struct iw_cm_id *cm_id; |
| 2788 | struct iw_cm_event cm_event; |
| 2789 | struct nes_vnic *nesvnic; |
| 2790 | u16 last_ae; |
| 2791 | u8 original_hw_tcp_state; |
| 2792 | u8 original_ibqp_state; |
Roland Dreier | d0c49bf | 2011-05-09 22:23:57 -0700 | [diff] [blame] | 2793 | int disconn_status = 0; |
Don Wood | b29a4fc | 2009-09-05 20:36:39 -0700 | [diff] [blame] | 2794 | int issue_disconn = 0; |
| 2795 | int issue_close = 0; |
| 2796 | int issue_flush = 0; |
| 2797 | u32 flush_q = NES_CQP_FLUSH_RQ; |
| 2798 | struct ib_event ibevent; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2799 | |
| 2800 | if (!nesqp) { |
| 2801 | nes_debug(NES_DBG_CM, "disconnect_worker nesqp is NULL\n"); |
| 2802 | return -1; |
| 2803 | } |
| 2804 | |
| 2805 | spin_lock_irqsave(&nesqp->lock, flags); |
| 2806 | cm_id = nesqp->cm_id; |
| 2807 | /* make sure we havent already closed this connection */ |
| 2808 | if (!cm_id) { |
| 2809 | nes_debug(NES_DBG_CM, "QP%u disconnect_worker cmid is NULL\n", |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2810 | nesqp->hwqp.qp_id); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2811 | spin_unlock_irqrestore(&nesqp->lock, flags); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2812 | return -1; |
| 2813 | } |
| 2814 | |
| 2815 | nesvnic = to_nesvnic(nesqp->ibqp.device); |
| 2816 | nes_debug(NES_DBG_CM, "Disconnecting QP%u\n", nesqp->hwqp.qp_id); |
| 2817 | |
| 2818 | original_hw_tcp_state = nesqp->hw_tcp_state; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2819 | original_ibqp_state = nesqp->ibqp_state; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2820 | last_ae = nesqp->last_aeq; |
| 2821 | |
Don Wood | b29a4fc | 2009-09-05 20:36:39 -0700 | [diff] [blame] | 2822 | if (nesqp->term_flags) { |
| 2823 | issue_disconn = 1; |
| 2824 | issue_close = 1; |
| 2825 | nesqp->cm_id = NULL; |
| 2826 | if (nesqp->flush_issued == 0) { |
| 2827 | nesqp->flush_issued = 1; |
| 2828 | issue_flush = 1; |
| 2829 | } |
| 2830 | } else if ((original_hw_tcp_state == NES_AEQE_TCP_STATE_CLOSE_WAIT) || |
| 2831 | ((original_ibqp_state == IB_QPS_RTS) && |
| 2832 | (last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET))) { |
| 2833 | issue_disconn = 1; |
| 2834 | if (last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET) |
Roland Dreier | d0c49bf | 2011-05-09 22:23:57 -0700 | [diff] [blame] | 2835 | disconn_status = -ECONNRESET; |
Don Wood | b29a4fc | 2009-09-05 20:36:39 -0700 | [diff] [blame] | 2836 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2837 | |
Don Wood | b29a4fc | 2009-09-05 20:36:39 -0700 | [diff] [blame] | 2838 | if (((original_hw_tcp_state == NES_AEQE_TCP_STATE_CLOSED) || |
| 2839 | (original_hw_tcp_state == NES_AEQE_TCP_STATE_TIME_WAIT) || |
| 2840 | (last_ae == NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) || |
| 2841 | (last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET))) { |
| 2842 | issue_close = 1; |
| 2843 | nesqp->cm_id = NULL; |
| 2844 | if (nesqp->flush_issued == 0) { |
| 2845 | nesqp->flush_issued = 1; |
| 2846 | issue_flush = 1; |
| 2847 | } |
| 2848 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2849 | |
Don Wood | b29a4fc | 2009-09-05 20:36:39 -0700 | [diff] [blame] | 2850 | spin_unlock_irqrestore(&nesqp->lock, flags); |
| 2851 | |
| 2852 | if ((issue_flush) && (nesqp->destroyed == 0)) { |
| 2853 | /* Flush the queue(s) */ |
| 2854 | if (nesqp->hw_iwarp_state >= NES_AEQE_IWARP_STATE_TERMINATE) |
| 2855 | flush_q |= NES_CQP_FLUSH_SQ; |
| 2856 | flush_wqes(nesvnic->nesdev, nesqp, flush_q, 1); |
| 2857 | |
| 2858 | if (nesqp->term_flags) { |
| 2859 | ibevent.device = nesqp->ibqp.device; |
| 2860 | ibevent.event = nesqp->terminate_eventtype; |
| 2861 | ibevent.element.qp = &nesqp->ibqp; |
| 2862 | nesqp->ibqp.event_handler(&ibevent, nesqp->ibqp.qp_context); |
| 2863 | } |
| 2864 | } |
| 2865 | |
| 2866 | if ((cm_id) && (cm_id->event_handler)) { |
| 2867 | if (issue_disconn) { |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2868 | atomic_inc(&cm_disconnects); |
| 2869 | cm_event.event = IW_CM_EVENT_DISCONNECT; |
Don Wood | b29a4fc | 2009-09-05 20:36:39 -0700 | [diff] [blame] | 2870 | cm_event.status = disconn_status; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2871 | cm_event.local_addr = cm_id->local_addr; |
| 2872 | cm_event.remote_addr = cm_id->remote_addr; |
| 2873 | cm_event.private_data = NULL; |
| 2874 | cm_event.private_data_len = 0; |
| 2875 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2876 | nes_debug(NES_DBG_CM, "Generating a CM Disconnect Event" |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2877 | " for QP%u, SQ Head = %u, SQ Tail = %u. " |
| 2878 | "cm_id = %p, refcount = %u.\n", |
| 2879 | nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, |
| 2880 | nesqp->hwqp.sq_tail, cm_id, |
| 2881 | atomic_read(&nesqp->refcount)); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2882 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2883 | ret = cm_id->event_handler(cm_id, &cm_event); |
| 2884 | if (ret) |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 2885 | nes_debug(NES_DBG_CM, "OFA CM event_handler " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2886 | "returned, ret=%d\n", ret); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2887 | } |
| 2888 | |
Don Wood | b29a4fc | 2009-09-05 20:36:39 -0700 | [diff] [blame] | 2889 | if (issue_close) { |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2890 | atomic_inc(&cm_closes); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2891 | nes_disconnect(nesqp, 1); |
| 2892 | |
| 2893 | cm_id->provider_data = nesqp; |
| 2894 | /* Send up the close complete event */ |
| 2895 | cm_event.event = IW_CM_EVENT_CLOSE; |
Roland Dreier | d0c49bf | 2011-05-09 22:23:57 -0700 | [diff] [blame] | 2896 | cm_event.status = 0; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2897 | cm_event.provider_data = cm_id->provider_data; |
| 2898 | cm_event.local_addr = cm_id->local_addr; |
| 2899 | cm_event.remote_addr = cm_id->remote_addr; |
| 2900 | cm_event.private_data = NULL; |
| 2901 | cm_event.private_data_len = 0; |
| 2902 | |
| 2903 | ret = cm_id->event_handler(cm_id, &cm_event); |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2904 | if (ret) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2905 | nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2906 | |
| 2907 | cm_id->rem_ref(cm_id); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2908 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2909 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2910 | |
| 2911 | return 0; |
| 2912 | } |
| 2913 | |
| 2914 | |
| 2915 | /** |
| 2916 | * nes_disconnect |
| 2917 | */ |
Roland Dreier | 1a855fb | 2008-04-16 21:01:09 -0700 | [diff] [blame] | 2918 | static int nes_disconnect(struct nes_qp *nesqp, int abrupt) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2919 | { |
| 2920 | int ret = 0; |
| 2921 | struct nes_vnic *nesvnic; |
| 2922 | struct nes_device *nesdev; |
Faisal Latif | c12e56e | 2009-03-12 14:34:59 -0700 | [diff] [blame] | 2923 | struct nes_ib_device *nesibdev; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2924 | |
| 2925 | nesvnic = to_nesvnic(nesqp->ibqp.device); |
| 2926 | if (!nesvnic) |
| 2927 | return -EINVAL; |
| 2928 | |
| 2929 | nesdev = nesvnic->nesdev; |
Faisal Latif | c12e56e | 2009-03-12 14:34:59 -0700 | [diff] [blame] | 2930 | nesibdev = nesvnic->nesibdev; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2931 | |
| 2932 | nes_debug(NES_DBG_CM, "netdev refcnt = %u.\n", |
Eric Dumazet | 29b4433 | 2010-10-11 10:22:12 +0000 | [diff] [blame] | 2933 | netdev_refcnt_read(nesvnic->netdev)); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2934 | |
| 2935 | if (nesqp->active_conn) { |
| 2936 | |
| 2937 | /* indicate this connection is NOT active */ |
| 2938 | nesqp->active_conn = 0; |
| 2939 | } else { |
| 2940 | /* Need to free the Last Streaming Mode Message */ |
| 2941 | if (nesqp->ietf_frame) { |
Faisal Latif | c12e56e | 2009-03-12 14:34:59 -0700 | [diff] [blame] | 2942 | if (nesqp->lsmm_mr) |
| 2943 | nesibdev->ibdev.dereg_mr(nesqp->lsmm_mr); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2944 | pci_free_consistent(nesdev->pcidev, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2945 | nesqp->private_data_len + nesqp->ietf_frame_size, |
| 2946 | nesqp->ietf_frame, nesqp->ietf_frame_pbase); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2947 | } |
| 2948 | } |
| 2949 | |
| 2950 | /* close the CM node down if it is still active */ |
| 2951 | if (nesqp->cm_node) { |
| 2952 | nes_debug(NES_DBG_CM, "Call close API\n"); |
| 2953 | |
| 2954 | g_cm_core->api->close(g_cm_core, nesqp->cm_node); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2955 | } |
| 2956 | |
| 2957 | return ret; |
| 2958 | } |
| 2959 | |
| 2960 | |
| 2961 | /** |
| 2962 | * nes_accept |
| 2963 | */ |
| 2964 | int nes_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) |
| 2965 | { |
| 2966 | u64 u64temp; |
| 2967 | struct ib_qp *ibqp; |
| 2968 | struct nes_qp *nesqp; |
| 2969 | struct nes_vnic *nesvnic; |
| 2970 | struct nes_device *nesdev; |
| 2971 | struct nes_cm_node *cm_node; |
| 2972 | struct nes_adapter *adapter; |
| 2973 | struct ib_qp_attr attr; |
| 2974 | struct iw_cm_event cm_event; |
| 2975 | struct nes_hw_qp_wqe *wqe; |
| 2976 | struct nes_v4_quad nes_quad; |
Faisal Latif | 30da7cf | 2008-02-21 08:31:22 -0600 | [diff] [blame] | 2977 | u32 crc_value; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2978 | int ret; |
Faisal Latif | 183ecfa | 2008-11-21 20:50:46 -0600 | [diff] [blame] | 2979 | int passive_state; |
Faisal Latif | c12e56e | 2009-03-12 14:34:59 -0700 | [diff] [blame] | 2980 | struct nes_ib_device *nesibdev; |
| 2981 | struct ib_mr *ibmr = NULL; |
| 2982 | struct ib_phys_buf ibphysbuf; |
| 2983 | struct nes_pd *nespd; |
Don Wood | 7a5efb6 | 2009-04-08 14:21:02 -0700 | [diff] [blame] | 2984 | u64 tagged_offset; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 2985 | u8 mpa_frame_offset = 0; |
| 2986 | struct ietf_mpa_v2 *mpa_v2_frame; |
| 2987 | u8 start_addr = 0; |
| 2988 | u8 *start_ptr = &start_addr; |
| 2989 | u8 **start_buff = &start_ptr; |
| 2990 | u16 buff_len = 0; |
Faisal Latif | c12e56e | 2009-03-12 14:34:59 -0700 | [diff] [blame] | 2991 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 2992 | ibqp = nes_get_qp(cm_id->device, conn_param->qpn); |
| 2993 | if (!ibqp) |
| 2994 | return -EINVAL; |
| 2995 | |
| 2996 | /* get all our handles */ |
| 2997 | nesqp = to_nesqp(ibqp); |
| 2998 | nesvnic = to_nesvnic(nesqp->ibqp.device); |
| 2999 | nesdev = nesvnic->nesdev; |
| 3000 | adapter = nesdev->nesadapter; |
| 3001 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3002 | cm_node = (struct nes_cm_node *)cm_id->provider_data; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3003 | nes_debug(NES_DBG_CM, "nes_accept: cm_node= %p nesvnic=%p, netdev=%p," |
| 3004 | "%s\n", cm_node, nesvnic, nesvnic->netdev, |
| 3005 | nesvnic->netdev->name); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3006 | |
Faisal Latif | c5a7d48 | 2009-12-09 15:54:08 -0800 | [diff] [blame] | 3007 | if (NES_CM_STATE_LISTENER_DESTROYED == cm_node->state) { |
| 3008 | if (cm_node->loopbackpartner) |
| 3009 | rem_ref_cm_node(cm_node->cm_core, cm_node->loopbackpartner); |
| 3010 | rem_ref_cm_node(cm_node->cm_core, cm_node); |
| 3011 | return -EINVAL; |
| 3012 | } |
| 3013 | |
Faisal Latif | dae5872 | 2010-08-14 21:04:56 +0000 | [diff] [blame] | 3014 | passive_state = atomic_add_return(1, &cm_node->passive_state); |
| 3015 | if (passive_state == NES_SEND_RESET_EVENT) { |
| 3016 | rem_ref_cm_node(cm_node->cm_core, cm_node); |
| 3017 | return -ECONNRESET; |
| 3018 | } |
| 3019 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3020 | /* associate the node with the QP */ |
| 3021 | nesqp->cm_node = (void *)cm_node; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3022 | cm_node->nesqp = nesqp; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3023 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3024 | nes_debug(NES_DBG_CM, "QP%u, cm_node=%p, jiffies = %lu listener = %p\n", |
| 3025 | nesqp->hwqp.qp_id, cm_node, jiffies, cm_node->listener); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3026 | atomic_inc(&cm_accepts); |
| 3027 | |
| 3028 | nes_debug(NES_DBG_CM, "netdev refcnt = %u.\n", |
Eric Dumazet | 29b4433 | 2010-10-11 10:22:12 +0000 | [diff] [blame] | 3029 | netdev_refcnt_read(nesvnic->netdev)); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3030 | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3031 | nesqp->ietf_frame_size = sizeof(struct ietf_mpa_v2); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3032 | /* allocate the ietf frame and space for private data */ |
| 3033 | nesqp->ietf_frame = pci_alloc_consistent(nesdev->pcidev, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3034 | nesqp->ietf_frame_size + conn_param->private_data_len, |
| 3035 | &nesqp->ietf_frame_pbase); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3036 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3037 | if (!nesqp->ietf_frame) { |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3038 | nes_debug(NES_DBG_CM, "Unable to allocate memory for private data\n"); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3039 | return -ENOMEM; |
| 3040 | } |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3041 | mpa_v2_frame = (struct ietf_mpa_v2 *)nesqp->ietf_frame; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3042 | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3043 | if (cm_node->mpa_frame_rev == IETF_MPA_V1) |
| 3044 | mpa_frame_offset = 4; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3045 | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3046 | memcpy(mpa_v2_frame->priv_data, conn_param->private_data, |
| 3047 | conn_param->private_data_len); |
| 3048 | |
| 3049 | cm_build_mpa_frame(cm_node, start_buff, &buff_len, nesqp->ietf_frame, MPA_KEY_REPLY); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3050 | nesqp->private_data_len = conn_param->private_data_len; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3051 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3052 | /* setup our first outgoing iWarp send WQE (the IETF frame response) */ |
| 3053 | wqe = &nesqp->hwqp.sq_vbase[0]; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3054 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3055 | if (cm_id->remote_addr.sin_addr.s_addr != |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3056 | cm_id->local_addr.sin_addr.s_addr) { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3057 | u64temp = (unsigned long)nesqp; |
Faisal Latif | c12e56e | 2009-03-12 14:34:59 -0700 | [diff] [blame] | 3058 | nesibdev = nesvnic->nesibdev; |
| 3059 | nespd = nesqp->nespd; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3060 | ibphysbuf.addr = nesqp->ietf_frame_pbase + mpa_frame_offset; |
| 3061 | ibphysbuf.size = buff_len; |
| 3062 | tagged_offset = (u64)(unsigned long)*start_buff; |
Faisal Latif | c12e56e | 2009-03-12 14:34:59 -0700 | [diff] [blame] | 3063 | ibmr = nesibdev->ibdev.reg_phys_mr((struct ib_pd *)nespd, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3064 | &ibphysbuf, 1, |
| 3065 | IB_ACCESS_LOCAL_WRITE, |
| 3066 | &tagged_offset); |
Faisal Latif | c12e56e | 2009-03-12 14:34:59 -0700 | [diff] [blame] | 3067 | if (!ibmr) { |
| 3068 | nes_debug(NES_DBG_CM, "Unable to register memory region" |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3069 | "for lSMM for cm_node = %p \n", |
| 3070 | cm_node); |
Faisal Latif | 9256b25 | 2009-04-27 13:45:19 -0700 | [diff] [blame] | 3071 | pci_free_consistent(nesdev->pcidev, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3072 | nesqp->private_data_len + nesqp->ietf_frame_size, |
| 3073 | nesqp->ietf_frame, nesqp->ietf_frame_pbase); |
Faisal Latif | c12e56e | 2009-03-12 14:34:59 -0700 | [diff] [blame] | 3074 | return -ENOMEM; |
| 3075 | } |
| 3076 | |
| 3077 | ibmr->pd = &nespd->ibpd; |
| 3078 | ibmr->device = nespd->ibpd.device; |
| 3079 | nesqp->lsmm_mr = ibmr; |
| 3080 | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3081 | u64temp |= NES_SW_CONTEXT_ALIGN >> 1; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3082 | set_wqe_64bit_value(wqe->wqe_words, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3083 | NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX, |
| 3084 | u64temp); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3085 | wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = |
| 3086 | cpu_to_le32(NES_IWARP_SQ_WQE_STREAMING | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3087 | NES_IWARP_SQ_WQE_WRPDU); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3088 | wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX] = |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3089 | cpu_to_le32(buff_len); |
Faisal Latif | c12e56e | 2009-03-12 14:34:59 -0700 | [diff] [blame] | 3090 | set_wqe_64bit_value(wqe->wqe_words, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3091 | NES_IWARP_SQ_WQE_FRAG0_LOW_IDX, |
| 3092 | (u64)(unsigned long)(*start_buff)); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3093 | wqe->wqe_words[NES_IWARP_SQ_WQE_LENGTH0_IDX] = |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3094 | cpu_to_le32(buff_len); |
Faisal Latif | c12e56e | 2009-03-12 14:34:59 -0700 | [diff] [blame] | 3095 | wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = ibmr->lkey; |
Faisal Latif | d2fa9b2 | 2009-12-09 15:54:28 -0800 | [diff] [blame] | 3096 | if (nesqp->sq_kmapped) { |
| 3097 | nesqp->sq_kmapped = 0; |
| 3098 | kunmap(nesqp->page); |
| 3099 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3100 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3101 | nesqp->nesqp_context->ird_ord_sizes |= |
| 3102 | cpu_to_le32(NES_QPCONTEXT_ORDIRD_LSMM_PRESENT | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3103 | NES_QPCONTEXT_ORDIRD_WRPDU); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3104 | } else { |
| 3105 | nesqp->nesqp_context->ird_ord_sizes |= |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 3106 | cpu_to_le32(NES_QPCONTEXT_ORDIRD_WRPDU); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3107 | } |
| 3108 | nesqp->skip_lsmm = 1; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3109 | |
| 3110 | |
| 3111 | /* Cache the cm_id in the qp */ |
| 3112 | nesqp->cm_id = cm_id; |
| 3113 | cm_node->cm_id = cm_id; |
| 3114 | |
| 3115 | /* nesqp->cm_node = (void *)cm_id->provider_data; */ |
| 3116 | cm_id->provider_data = nesqp; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3117 | nesqp->active_conn = 0; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3118 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3119 | if (cm_node->state == NES_CM_STATE_TSA) |
| 3120 | nes_debug(NES_DBG_CM, "Already state = TSA for cm_node=%p\n", |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3121 | cm_node); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3122 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3123 | nes_cm_init_tsa_conn(nesqp, cm_node); |
| 3124 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3125 | nesqp->nesqp_context->tcpPorts[0] = |
| 3126 | cpu_to_le16(ntohs(cm_id->local_addr.sin_port)); |
| 3127 | nesqp->nesqp_context->tcpPorts[1] = |
| 3128 | cpu_to_le16(ntohs(cm_id->remote_addr.sin_port)); |
| 3129 | |
| 3130 | if (ipv4_is_loopback(cm_id->remote_addr.sin_addr.s_addr)) |
| 3131 | nesqp->nesqp_context->ip0 = |
| 3132 | cpu_to_le32(ntohl(nesvnic->local_ipaddr)); |
| 3133 | else |
| 3134 | nesqp->nesqp_context->ip0 = |
| 3135 | cpu_to_le32(ntohl(cm_id->remote_addr.sin_addr.s_addr)); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3136 | |
| 3137 | nesqp->nesqp_context->misc2 |= cpu_to_le32( |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3138 | (u32)PCI_FUNC(nesdev->pcidev->devfn) << |
| 3139 | NES_QPCONTEXT_MISC2_SRC_IP_SHIFT); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3140 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3141 | nesqp->nesqp_context->arp_index_vlan |= |
| 3142 | cpu_to_le32(nes_arp_table(nesdev, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3143 | le32_to_cpu(nesqp->nesqp_context->ip0), NULL, |
| 3144 | NES_ARP_RESOLVE) << 16); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3145 | |
| 3146 | nesqp->nesqp_context->ts_val_delta = cpu_to_le32( |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3147 | jiffies - nes_read_indexed(nesdev, NES_IDX_TCP_NOW)); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3148 | |
| 3149 | nesqp->nesqp_context->ird_index = cpu_to_le32(nesqp->hwqp.qp_id); |
| 3150 | |
| 3151 | nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32( |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3152 | ((u32)1 << NES_QPCONTEXT_ORDIRD_IWARP_MODE_SHIFT)); |
| 3153 | nesqp->nesqp_context->ird_ord_sizes |= |
| 3154 | cpu_to_le32((u32)conn_param->ord); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3155 | |
| 3156 | memset(&nes_quad, 0, sizeof(nes_quad)); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3157 | nes_quad.DstIpAdrIndex = |
| 3158 | cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) << 24); |
| 3159 | if (ipv4_is_loopback(cm_id->remote_addr.sin_addr.s_addr)) |
| 3160 | nes_quad.SrcIpadr = nesvnic->local_ipaddr; |
| 3161 | else |
| 3162 | nes_quad.SrcIpadr = cm_id->remote_addr.sin_addr.s_addr; |
| 3163 | nes_quad.TcpPorts[0] = cm_id->remote_addr.sin_port; |
| 3164 | nes_quad.TcpPorts[1] = cm_id->local_addr.sin_port; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3165 | |
| 3166 | /* Produce hash key */ |
Faisal Latif | 30da7cf | 2008-02-21 08:31:22 -0600 | [diff] [blame] | 3167 | crc_value = get_crc_value(&nes_quad); |
| 3168 | nesqp->hte_index = cpu_to_be32(crc_value ^ 0xffffffff); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3169 | nes_debug(NES_DBG_CM, "HTE Index = 0x%08X, CRC = 0x%08X\n", |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3170 | nesqp->hte_index, nesqp->hte_index & adapter->hte_index_mask); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3171 | |
| 3172 | nesqp->hte_index &= adapter->hte_index_mask; |
| 3173 | nesqp->nesqp_context->hte_index = cpu_to_le32(nesqp->hte_index); |
| 3174 | |
| 3175 | cm_node->cm_core->api->accelerated(cm_node->cm_core, cm_node); |
| 3176 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3177 | nes_debug(NES_DBG_CM, "QP%u, Destination IP = 0x%08X:0x%04X, local = " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3178 | "0x%08X:0x%04X, rcv_nxt=0x%08X, snd_nxt=0x%08X, mpa + " |
| 3179 | "private data length=%u.\n", nesqp->hwqp.qp_id, |
| 3180 | ntohl(cm_id->remote_addr.sin_addr.s_addr), |
| 3181 | ntohs(cm_id->remote_addr.sin_port), |
| 3182 | ntohl(cm_id->local_addr.sin_addr.s_addr), |
| 3183 | ntohs(cm_id->local_addr.sin_port), |
| 3184 | le32_to_cpu(nesqp->nesqp_context->rcv_nxt), |
| 3185 | le32_to_cpu(nesqp->nesqp_context->snd_nxt), |
| 3186 | buff_len); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3187 | |
Coly Li | 73ac36e | 2009-01-07 18:09:16 -0800 | [diff] [blame] | 3188 | /* notify OF layer that accept event was successful */ |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3189 | cm_id->add_ref(cm_id); |
Faisal Latif | 9256b25 | 2009-04-27 13:45:19 -0700 | [diff] [blame] | 3190 | nes_add_ref(&nesqp->ibqp); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3191 | |
| 3192 | cm_event.event = IW_CM_EVENT_ESTABLISHED; |
Roland Dreier | d0c49bf | 2011-05-09 22:23:57 -0700 | [diff] [blame] | 3193 | cm_event.status = 0; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3194 | cm_event.provider_data = (void *)nesqp; |
| 3195 | cm_event.local_addr = cm_id->local_addr; |
| 3196 | cm_event.remote_addr = cm_id->remote_addr; |
| 3197 | cm_event.private_data = NULL; |
| 3198 | cm_event.private_data_len = 0; |
| 3199 | ret = cm_id->event_handler(cm_id, &cm_event); |
Faisal Latif | 183ecfa | 2008-11-21 20:50:46 -0600 | [diff] [blame] | 3200 | attr.qp_state = IB_QPS_RTS; |
| 3201 | nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3202 | if (cm_node->loopbackpartner) { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3203 | cm_node->loopbackpartner->mpa_frame_size = |
| 3204 | nesqp->private_data_len; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3205 | /* copy entire MPA frame to our cm_node's frame */ |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3206 | memcpy(cm_node->loopbackpartner->mpa_frame_buf, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3207 | conn_param->private_data, conn_param->private_data_len); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3208 | create_event(cm_node->loopbackpartner, NES_CM_EVENT_CONNECTED); |
| 3209 | } |
| 3210 | if (ret) |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3211 | printk(KERN_ERR "%s[%u] OFA CM event_handler returned, " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3212 | "ret=%d\n", __func__, __LINE__, ret); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3213 | |
| 3214 | return 0; |
| 3215 | } |
| 3216 | |
| 3217 | |
| 3218 | /** |
| 3219 | * nes_reject |
| 3220 | */ |
| 3221 | int nes_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) |
| 3222 | { |
| 3223 | struct nes_cm_node *cm_node; |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 3224 | struct nes_cm_node *loopback; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3225 | struct nes_cm_core *cm_core; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3226 | u8 *start_buff; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3227 | |
| 3228 | atomic_inc(&cm_rejects); |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3229 | cm_node = (struct nes_cm_node *)cm_id->provider_data; |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 3230 | loopback = cm_node->loopbackpartner; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3231 | cm_core = cm_node->cm_core; |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 3232 | cm_node->cm_id = cm_id; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3233 | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3234 | if (pdata_len + sizeof(struct ietf_mpa_v2) > MAX_CM_BUFFER) |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 3235 | return -EINVAL; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3236 | |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 3237 | if (loopback) { |
| 3238 | memcpy(&loopback->mpa_frame.priv_data, pdata, pdata_len); |
| 3239 | loopback->mpa_frame.priv_data_len = pdata_len; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3240 | loopback->mpa_frame_size = pdata_len; |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 3241 | } else { |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3242 | start_buff = &cm_node->mpa_frame_buf[0] + sizeof(struct ietf_mpa_v2); |
| 3243 | cm_node->mpa_frame_size = pdata_len; |
| 3244 | memcpy(start_buff, pdata, pdata_len); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 3245 | } |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3246 | return cm_core->api->reject(cm_core, cm_node); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3247 | } |
| 3248 | |
| 3249 | |
| 3250 | /** |
| 3251 | * nes_connect |
| 3252 | * setup and launch cm connect node |
| 3253 | */ |
| 3254 | int nes_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) |
| 3255 | { |
| 3256 | struct ib_qp *ibqp; |
| 3257 | struct nes_qp *nesqp; |
| 3258 | struct nes_vnic *nesvnic; |
| 3259 | struct nes_device *nesdev; |
| 3260 | struct nes_cm_node *cm_node; |
| 3261 | struct nes_cm_info cm_info; |
Faisal Latif | 53094c3 | 2009-04-27 13:37:34 -0700 | [diff] [blame] | 3262 | int apbvt_set = 0; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3263 | |
| 3264 | ibqp = nes_get_qp(cm_id->device, conn_param->qpn); |
| 3265 | if (!ibqp) |
| 3266 | return -EINVAL; |
| 3267 | nesqp = to_nesqp(ibqp); |
| 3268 | if (!nesqp) |
| 3269 | return -EINVAL; |
| 3270 | nesvnic = to_nesvnic(nesqp->ibqp.device); |
| 3271 | if (!nesvnic) |
| 3272 | return -EINVAL; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3273 | nesdev = nesvnic->nesdev; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3274 | if (!nesdev) |
| 3275 | return -EINVAL; |
| 3276 | |
Faisal Latif | c5a7d48 | 2009-12-09 15:54:08 -0800 | [diff] [blame] | 3277 | if (!(cm_id->local_addr.sin_port) || !(cm_id->remote_addr.sin_port)) |
| 3278 | return -EINVAL; |
| 3279 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3280 | nes_debug(NES_DBG_CM, "QP%u, current IP = 0x%08X, Destination IP = " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3281 | "0x%08X:0x%04X, local = 0x%08X:0x%04X.\n", nesqp->hwqp.qp_id, |
| 3282 | ntohl(nesvnic->local_ipaddr), |
| 3283 | ntohl(cm_id->remote_addr.sin_addr.s_addr), |
| 3284 | ntohs(cm_id->remote_addr.sin_port), |
| 3285 | ntohl(cm_id->local_addr.sin_addr.s_addr), |
| 3286 | ntohs(cm_id->local_addr.sin_port)); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3287 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3288 | atomic_inc(&cm_connects); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3289 | nesqp->active_conn = 1; |
| 3290 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3291 | /* cache the cm_id in the qp */ |
| 3292 | nesqp->cm_id = cm_id; |
| 3293 | |
| 3294 | cm_id->provider_data = nesqp; |
| 3295 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3296 | nesqp->private_data_len = conn_param->private_data_len; |
| 3297 | nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32((u32)conn_param->ord); |
| 3298 | nes_debug(NES_DBG_CM, "requested ord = 0x%08X.\n", (u32)conn_param->ord); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3299 | nes_debug(NES_DBG_CM, "mpa private data len =%u\n", |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3300 | conn_param->private_data_len); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3301 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3302 | if (cm_id->local_addr.sin_addr.s_addr != |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3303 | cm_id->remote_addr.sin_addr.s_addr) { |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3304 | nes_manage_apbvt(nesvnic, ntohs(cm_id->local_addr.sin_port), |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3305 | PCI_FUNC(nesdev->pcidev->devfn), NES_MANAGE_APBVT_ADD); |
Faisal Latif | 53094c3 | 2009-04-27 13:37:34 -0700 | [diff] [blame] | 3306 | apbvt_set = 1; |
| 3307 | } |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3308 | |
| 3309 | /* set up the connection params for the node */ |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3310 | cm_info.loc_addr = htonl(cm_id->local_addr.sin_addr.s_addr); |
| 3311 | cm_info.loc_port = htons(cm_id->local_addr.sin_port); |
| 3312 | cm_info.rem_addr = htonl(cm_id->remote_addr.sin_addr.s_addr); |
| 3313 | cm_info.rem_port = htons(cm_id->remote_addr.sin_port); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3314 | cm_info.cm_id = cm_id; |
| 3315 | cm_info.conn_type = NES_CM_IWARP_CONN_TYPE; |
| 3316 | |
| 3317 | cm_id->add_ref(cm_id); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3318 | |
| 3319 | /* create a connect CM node connection */ |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3320 | cm_node = g_cm_core->api->connect(g_cm_core, nesvnic, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3321 | conn_param->private_data_len, (void *)conn_param->private_data, |
| 3322 | &cm_info); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3323 | if (!cm_node) { |
Faisal Latif | 53094c3 | 2009-04-27 13:37:34 -0700 | [diff] [blame] | 3324 | if (apbvt_set) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3325 | nes_manage_apbvt(nesvnic, ntohs(cm_id->local_addr.sin_port), |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3326 | PCI_FUNC(nesdev->pcidev->devfn), |
| 3327 | NES_MANAGE_APBVT_DEL); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3328 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3329 | cm_id->rem_ref(cm_id); |
| 3330 | return -ENOMEM; |
| 3331 | } |
| 3332 | |
Faisal Latif | 53094c3 | 2009-04-27 13:37:34 -0700 | [diff] [blame] | 3333 | cm_node->apbvt_set = apbvt_set; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3334 | nesqp->cm_node = cm_node; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3335 | cm_node->nesqp = nesqp; |
Faisal Latif | d7ffd50 | 2008-09-16 11:56:26 -0700 | [diff] [blame] | 3336 | nes_add_ref(&nesqp->ibqp); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3337 | |
| 3338 | return 0; |
| 3339 | } |
| 3340 | |
| 3341 | |
| 3342 | /** |
| 3343 | * nes_create_listen |
| 3344 | */ |
| 3345 | int nes_create_listen(struct iw_cm_id *cm_id, int backlog) |
| 3346 | { |
| 3347 | struct nes_vnic *nesvnic; |
| 3348 | struct nes_cm_listener *cm_node; |
| 3349 | struct nes_cm_info cm_info; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3350 | int err; |
| 3351 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3352 | nes_debug(NES_DBG_CM, "cm_id = %p, local port = 0x%04X.\n", |
| 3353 | cm_id, ntohs(cm_id->local_addr.sin_port)); |
| 3354 | |
| 3355 | nesvnic = to_nesvnic(cm_id->device); |
| 3356 | if (!nesvnic) |
| 3357 | return -EINVAL; |
Roland Dreier | 69d5102 | 2010-08-04 14:25:40 -0700 | [diff] [blame] | 3358 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3359 | nes_debug(NES_DBG_CM, "nesvnic=%p, netdev=%p, %s\n", |
| 3360 | nesvnic, nesvnic->netdev, nesvnic->netdev->name); |
| 3361 | |
| 3362 | nes_debug(NES_DBG_CM, "nesvnic->local_ipaddr=0x%08x, sin_addr.s_addr=0x%08x\n", |
| 3363 | nesvnic->local_ipaddr, cm_id->local_addr.sin_addr.s_addr); |
| 3364 | |
| 3365 | /* setup listen params in our api call struct */ |
| 3366 | cm_info.loc_addr = nesvnic->local_ipaddr; |
| 3367 | cm_info.loc_port = cm_id->local_addr.sin_port; |
| 3368 | cm_info.backlog = backlog; |
| 3369 | cm_info.cm_id = cm_id; |
| 3370 | |
| 3371 | cm_info.conn_type = NES_CM_IWARP_CONN_TYPE; |
| 3372 | |
| 3373 | |
| 3374 | cm_node = g_cm_core->api->listen(g_cm_core, nesvnic, &cm_info); |
| 3375 | if (!cm_node) { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3376 | printk(KERN_ERR "%s[%u] Error returned from listen API call\n", |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3377 | __func__, __LINE__); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3378 | return -ENOMEM; |
| 3379 | } |
| 3380 | |
| 3381 | cm_id->provider_data = cm_node; |
| 3382 | |
| 3383 | if (!cm_node->reused_node) { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3384 | err = nes_manage_apbvt(nesvnic, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3385 | ntohs(cm_id->local_addr.sin_port), |
| 3386 | PCI_FUNC(nesvnic->nesdev->pcidev->devfn), |
| 3387 | NES_MANAGE_APBVT_ADD); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3388 | if (err) { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3389 | printk(KERN_ERR "nes_manage_apbvt call returned %d.\n", |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3390 | err); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3391 | g_cm_core->api->stop_listener(g_cm_core, (void *)cm_node); |
| 3392 | return err; |
| 3393 | } |
Faisal Latif | 6e10d2e | 2010-02-12 19:55:03 +0000 | [diff] [blame] | 3394 | atomic_inc(&cm_listens_created); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3395 | } |
| 3396 | |
| 3397 | cm_id->add_ref(cm_id); |
| 3398 | cm_id->provider_data = (void *)cm_node; |
| 3399 | |
| 3400 | |
| 3401 | return 0; |
| 3402 | } |
| 3403 | |
| 3404 | |
| 3405 | /** |
| 3406 | * nes_destroy_listen |
| 3407 | */ |
| 3408 | int nes_destroy_listen(struct iw_cm_id *cm_id) |
| 3409 | { |
| 3410 | if (cm_id->provider_data) |
| 3411 | g_cm_core->api->stop_listener(g_cm_core, cm_id->provider_data); |
| 3412 | else |
| 3413 | nes_debug(NES_DBG_CM, "cm_id->provider_data was NULL\n"); |
| 3414 | |
| 3415 | cm_id->rem_ref(cm_id); |
| 3416 | |
| 3417 | return 0; |
| 3418 | } |
| 3419 | |
| 3420 | |
| 3421 | /** |
| 3422 | * nes_cm_recv |
| 3423 | */ |
| 3424 | int nes_cm_recv(struct sk_buff *skb, struct net_device *netdevice) |
| 3425 | { |
Faisal Latif | 4a14f6a | 2008-11-21 20:50:49 -0600 | [diff] [blame] | 3426 | int rc = 0; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3427 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3428 | cm_packets_received++; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3429 | if ((g_cm_core) && (g_cm_core->api)) |
Faisal Latif | 4a14f6a | 2008-11-21 20:50:49 -0600 | [diff] [blame] | 3430 | rc = g_cm_core->api->recv_pkt(g_cm_core, netdev_priv(netdevice), skb); |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3431 | else |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3432 | nes_debug(NES_DBG_CM, "Unable to process packet for CM," |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3433 | " cm is not setup properly.\n"); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3434 | |
Faisal Latif | 4a14f6a | 2008-11-21 20:50:49 -0600 | [diff] [blame] | 3435 | return rc; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3436 | } |
| 3437 | |
| 3438 | |
| 3439 | /** |
| 3440 | * nes_cm_start |
| 3441 | * Start and init a cm core module |
| 3442 | */ |
| 3443 | int nes_cm_start(void) |
| 3444 | { |
| 3445 | nes_debug(NES_DBG_CM, "\n"); |
| 3446 | /* create the primary CM core, pass this handle to subsequent core inits */ |
| 3447 | g_cm_core = nes_cm_alloc_core(); |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3448 | if (g_cm_core) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3449 | return 0; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3450 | else |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3451 | return -ENOMEM; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3452 | } |
| 3453 | |
| 3454 | |
| 3455 | /** |
| 3456 | * nes_cm_stop |
| 3457 | * stop and dealloc all cm core instances |
| 3458 | */ |
| 3459 | int nes_cm_stop(void) |
| 3460 | { |
| 3461 | g_cm_core->api->destroy_cm_core(g_cm_core); |
| 3462 | return 0; |
| 3463 | } |
| 3464 | |
| 3465 | |
| 3466 | /** |
| 3467 | * cm_event_connected |
| 3468 | * handle a connected event, setup QPs and HW |
| 3469 | */ |
Roland Dreier | 1a855fb | 2008-04-16 21:01:09 -0700 | [diff] [blame] | 3470 | static void cm_event_connected(struct nes_cm_event *event) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3471 | { |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3472 | struct nes_qp *nesqp; |
| 3473 | struct nes_vnic *nesvnic; |
| 3474 | struct nes_device *nesdev; |
| 3475 | struct nes_cm_node *cm_node; |
| 3476 | struct nes_adapter *nesadapter; |
| 3477 | struct ib_qp_attr attr; |
| 3478 | struct iw_cm_id *cm_id; |
| 3479 | struct iw_cm_event cm_event; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3480 | struct nes_v4_quad nes_quad; |
Faisal Latif | 30da7cf | 2008-02-21 08:31:22 -0600 | [diff] [blame] | 3481 | u32 crc_value; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3482 | int ret; |
| 3483 | |
| 3484 | /* get all our handles */ |
| 3485 | cm_node = event->cm_node; |
| 3486 | cm_id = cm_node->cm_id; |
| 3487 | nes_debug(NES_DBG_CM, "cm_event_connected - %p - cm_id = %p\n", cm_node, cm_id); |
| 3488 | nesqp = (struct nes_qp *)cm_id->provider_data; |
| 3489 | nesvnic = to_nesvnic(nesqp->ibqp.device); |
| 3490 | nesdev = nesvnic->nesdev; |
| 3491 | nesadapter = nesdev->nesadapter; |
| 3492 | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3493 | if (nesqp->destroyed) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3494 | return; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3495 | atomic_inc(&cm_connecteds); |
| 3496 | nes_debug(NES_DBG_CM, "QP%u attempting to connect to 0x%08X:0x%04X on" |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3497 | " local port 0x%04X. jiffies = %lu.\n", |
| 3498 | nesqp->hwqp.qp_id, |
| 3499 | ntohl(cm_id->remote_addr.sin_addr.s_addr), |
| 3500 | ntohs(cm_id->remote_addr.sin_port), |
| 3501 | ntohs(cm_id->local_addr.sin_port), |
| 3502 | jiffies); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3503 | |
| 3504 | nes_cm_init_tsa_conn(nesqp, cm_node); |
| 3505 | |
| 3506 | /* set the QP tsa context */ |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3507 | nesqp->nesqp_context->tcpPorts[0] = |
| 3508 | cpu_to_le16(ntohs(cm_id->local_addr.sin_port)); |
| 3509 | nesqp->nesqp_context->tcpPorts[1] = |
| 3510 | cpu_to_le16(ntohs(cm_id->remote_addr.sin_port)); |
| 3511 | if (ipv4_is_loopback(cm_id->remote_addr.sin_addr.s_addr)) |
| 3512 | nesqp->nesqp_context->ip0 = |
| 3513 | cpu_to_le32(ntohl(nesvnic->local_ipaddr)); |
| 3514 | else |
| 3515 | nesqp->nesqp_context->ip0 = |
| 3516 | cpu_to_le32(ntohl(cm_id->remote_addr.sin_addr.s_addr)); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3517 | |
| 3518 | nesqp->nesqp_context->misc2 |= cpu_to_le32( |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3519 | (u32)PCI_FUNC(nesdev->pcidev->devfn) << |
| 3520 | NES_QPCONTEXT_MISC2_SRC_IP_SHIFT); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3521 | nesqp->nesqp_context->arp_index_vlan |= cpu_to_le32( |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3522 | nes_arp_table(nesdev, |
| 3523 | le32_to_cpu(nesqp->nesqp_context->ip0), |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3524 | NULL, NES_ARP_RESOLVE) << 16); |
| 3525 | nesqp->nesqp_context->ts_val_delta = cpu_to_le32( |
| 3526 | jiffies - nes_read_indexed(nesdev, NES_IDX_TCP_NOW)); |
| 3527 | nesqp->nesqp_context->ird_index = cpu_to_le32(nesqp->hwqp.qp_id); |
| 3528 | nesqp->nesqp_context->ird_ord_sizes |= |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3529 | cpu_to_le32((u32)1 << |
| 3530 | NES_QPCONTEXT_ORDIRD_IWARP_MODE_SHIFT); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3531 | |
| 3532 | /* Adjust tail for not having a LSMM */ |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3533 | /*nesqp->hwqp.sq_tail = 1;*/ |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3534 | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3535 | build_rdma0_msg(cm_node, &nesqp); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3536 | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3537 | nes_write32(nesdev->regs + NES_WQE_ALLOC, |
| 3538 | (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3539 | |
| 3540 | memset(&nes_quad, 0, sizeof(nes_quad)); |
| 3541 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3542 | nes_quad.DstIpAdrIndex = |
| 3543 | cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) << 24); |
| 3544 | if (ipv4_is_loopback(cm_id->remote_addr.sin_addr.s_addr)) |
| 3545 | nes_quad.SrcIpadr = nesvnic->local_ipaddr; |
| 3546 | else |
| 3547 | nes_quad.SrcIpadr = cm_id->remote_addr.sin_addr.s_addr; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3548 | nes_quad.TcpPorts[0] = cm_id->remote_addr.sin_port; |
| 3549 | nes_quad.TcpPorts[1] = cm_id->local_addr.sin_port; |
| 3550 | |
| 3551 | /* Produce hash key */ |
Faisal Latif | 30da7cf | 2008-02-21 08:31:22 -0600 | [diff] [blame] | 3552 | crc_value = get_crc_value(&nes_quad); |
| 3553 | nesqp->hte_index = cpu_to_be32(crc_value ^ 0xffffffff); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3554 | nes_debug(NES_DBG_CM, "HTE Index = 0x%08X, After CRC = 0x%08X\n", |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3555 | nesqp->hte_index, nesqp->hte_index & nesadapter->hte_index_mask); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3556 | |
| 3557 | nesqp->hte_index &= nesadapter->hte_index_mask; |
| 3558 | nesqp->nesqp_context->hte_index = cpu_to_le32(nesqp->hte_index); |
| 3559 | |
| 3560 | nesqp->ietf_frame = &cm_node->mpa_frame; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3561 | nesqp->private_data_len = (u8)cm_node->mpa_frame_size; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3562 | cm_node->cm_core->api->accelerated(cm_node->cm_core, cm_node); |
| 3563 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3564 | /* notify OF layer we successfully created the requested connection */ |
| 3565 | cm_event.event = IW_CM_EVENT_CONNECT_REPLY; |
Roland Dreier | d0c49bf | 2011-05-09 22:23:57 -0700 | [diff] [blame] | 3566 | cm_event.status = 0; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3567 | cm_event.provider_data = cm_id->provider_data; |
| 3568 | cm_event.local_addr.sin_family = AF_INET; |
| 3569 | cm_event.local_addr.sin_port = cm_id->local_addr.sin_port; |
| 3570 | cm_event.remote_addr = cm_id->remote_addr; |
| 3571 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3572 | cm_event.private_data = (void *)event->cm_node->mpa_frame_buf; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3573 | cm_event.private_data_len = (u8)event->cm_node->mpa_frame_size; |
| 3574 | cm_event.ird = cm_node->ird_size; |
| 3575 | cm_event.ord = cm_node->ord_size; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3576 | |
| 3577 | cm_event.local_addr.sin_addr.s_addr = event->cm_info.rem_addr; |
| 3578 | ret = cm_id->event_handler(cm_id, &cm_event); |
| 3579 | nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret); |
| 3580 | |
| 3581 | if (ret) |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3582 | printk(KERN_ERR "%s[%u] OFA CM event_handler returned, " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3583 | "ret=%d\n", __func__, __LINE__, ret); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3584 | attr.qp_state = IB_QPS_RTS; |
| 3585 | nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3586 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3587 | nes_debug(NES_DBG_CM, "Exiting connect thread for QP%u. jiffies = " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3588 | "%lu\n", nesqp->hwqp.qp_id, jiffies); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3589 | |
| 3590 | return; |
| 3591 | } |
| 3592 | |
| 3593 | |
| 3594 | /** |
| 3595 | * cm_event_connect_error |
| 3596 | */ |
Roland Dreier | 1a855fb | 2008-04-16 21:01:09 -0700 | [diff] [blame] | 3597 | static void cm_event_connect_error(struct nes_cm_event *event) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3598 | { |
| 3599 | struct nes_qp *nesqp; |
| 3600 | struct iw_cm_id *cm_id; |
| 3601 | struct iw_cm_event cm_event; |
| 3602 | /* struct nes_cm_info cm_info; */ |
| 3603 | int ret; |
| 3604 | |
| 3605 | if (!event->cm_node) |
| 3606 | return; |
| 3607 | |
| 3608 | cm_id = event->cm_node->cm_id; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3609 | if (!cm_id) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3610 | return; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3611 | |
| 3612 | nes_debug(NES_DBG_CM, "cm_node=%p, cm_id=%p\n", event->cm_node, cm_id); |
| 3613 | nesqp = cm_id->provider_data; |
| 3614 | |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3615 | if (!nesqp) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3616 | return; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3617 | |
| 3618 | /* notify OF layer about this connection error event */ |
| 3619 | /* cm_id->rem_ref(cm_id); */ |
| 3620 | nesqp->cm_id = NULL; |
| 3621 | cm_id->provider_data = NULL; |
| 3622 | cm_event.event = IW_CM_EVENT_CONNECT_REPLY; |
Faisal Latif | c5a7d48 | 2009-12-09 15:54:08 -0800 | [diff] [blame] | 3623 | cm_event.status = -ECONNRESET; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3624 | cm_event.provider_data = cm_id->provider_data; |
| 3625 | cm_event.local_addr = cm_id->local_addr; |
| 3626 | cm_event.remote_addr = cm_id->remote_addr; |
| 3627 | cm_event.private_data = NULL; |
| 3628 | cm_event.private_data_len = 0; |
| 3629 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3630 | nes_debug(NES_DBG_CM, "call CM_EVENT REJECTED, local_addr=%08x, " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3631 | "remove_addr=%08x\n", cm_event.local_addr.sin_addr.s_addr, |
| 3632 | cm_event.remote_addr.sin_addr.s_addr); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3633 | |
| 3634 | ret = cm_id->event_handler(cm_id, &cm_event); |
| 3635 | nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret); |
| 3636 | if (ret) |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3637 | printk(KERN_ERR "%s[%u] OFA CM event_handler returned, " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3638 | "ret=%d\n", __func__, __LINE__, ret); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3639 | cm_id->rem_ref(cm_id); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3640 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3641 | rem_ref_cm_node(event->cm_node->cm_core, event->cm_node); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3642 | return; |
| 3643 | } |
| 3644 | |
| 3645 | |
| 3646 | /** |
| 3647 | * cm_event_reset |
| 3648 | */ |
Roland Dreier | 1a855fb | 2008-04-16 21:01:09 -0700 | [diff] [blame] | 3649 | static void cm_event_reset(struct nes_cm_event *event) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3650 | { |
| 3651 | struct nes_qp *nesqp; |
| 3652 | struct iw_cm_id *cm_id; |
| 3653 | struct iw_cm_event cm_event; |
| 3654 | /* struct nes_cm_info cm_info; */ |
| 3655 | int ret; |
| 3656 | |
| 3657 | if (!event->cm_node) |
| 3658 | return; |
| 3659 | |
| 3660 | if (!event->cm_node->cm_id) |
| 3661 | return; |
| 3662 | |
| 3663 | cm_id = event->cm_node->cm_id; |
| 3664 | |
| 3665 | nes_debug(NES_DBG_CM, "%p - cm_id = %p\n", event->cm_node, cm_id); |
| 3666 | nesqp = cm_id->provider_data; |
Faisal Latif | f9f3f1e | 2009-12-09 15:54:14 -0800 | [diff] [blame] | 3667 | if (!nesqp) |
| 3668 | return; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3669 | |
| 3670 | nesqp->cm_id = NULL; |
| 3671 | /* cm_id->provider_data = NULL; */ |
| 3672 | cm_event.event = IW_CM_EVENT_DISCONNECT; |
Roland Dreier | d0c49bf | 2011-05-09 22:23:57 -0700 | [diff] [blame] | 3673 | cm_event.status = -ECONNRESET; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3674 | cm_event.provider_data = cm_id->provider_data; |
| 3675 | cm_event.local_addr = cm_id->local_addr; |
| 3676 | cm_event.remote_addr = cm_id->remote_addr; |
| 3677 | cm_event.private_data = NULL; |
| 3678 | cm_event.private_data_len = 0; |
| 3679 | |
Faisal Latif | 183ecfa | 2008-11-21 20:50:46 -0600 | [diff] [blame] | 3680 | cm_id->add_ref(cm_id); |
Faisal Latif | f9f3f1e | 2009-12-09 15:54:14 -0800 | [diff] [blame] | 3681 | ret = cm_id->event_handler(cm_id, &cm_event); |
Faisal Latif | 183ecfa | 2008-11-21 20:50:46 -0600 | [diff] [blame] | 3682 | atomic_inc(&cm_closes); |
| 3683 | cm_event.event = IW_CM_EVENT_CLOSE; |
Roland Dreier | d0c49bf | 2011-05-09 22:23:57 -0700 | [diff] [blame] | 3684 | cm_event.status = 0; |
Faisal Latif | 183ecfa | 2008-11-21 20:50:46 -0600 | [diff] [blame] | 3685 | cm_event.provider_data = cm_id->provider_data; |
| 3686 | cm_event.local_addr = cm_id->local_addr; |
| 3687 | cm_event.remote_addr = cm_id->remote_addr; |
| 3688 | cm_event.private_data = NULL; |
| 3689 | cm_event.private_data_len = 0; |
| 3690 | nes_debug(NES_DBG_CM, "NODE %p Generating CLOSE\n", event->cm_node); |
| 3691 | ret = cm_id->event_handler(cm_id, &cm_event); |
| 3692 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3693 | nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret); |
| 3694 | |
| 3695 | |
| 3696 | /* notify OF layer about this connection error event */ |
| 3697 | cm_id->rem_ref(cm_id); |
| 3698 | |
| 3699 | return; |
| 3700 | } |
| 3701 | |
| 3702 | |
| 3703 | /** |
| 3704 | * cm_event_mpa_req |
| 3705 | */ |
Roland Dreier | 1a855fb | 2008-04-16 21:01:09 -0700 | [diff] [blame] | 3706 | static void cm_event_mpa_req(struct nes_cm_event *event) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3707 | { |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3708 | struct iw_cm_id *cm_id; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3709 | struct iw_cm_event cm_event; |
| 3710 | int ret; |
| 3711 | struct nes_cm_node *cm_node; |
| 3712 | |
| 3713 | cm_node = event->cm_node; |
| 3714 | if (!cm_node) |
| 3715 | return; |
| 3716 | cm_id = cm_node->cm_id; |
| 3717 | |
| 3718 | atomic_inc(&cm_connect_reqs); |
| 3719 | nes_debug(NES_DBG_CM, "cm_node = %p - cm_id = %p, jiffies = %lu\n", |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3720 | cm_node, cm_id, jiffies); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3721 | |
| 3722 | cm_event.event = IW_CM_EVENT_CONNECT_REQUEST; |
Roland Dreier | d0c49bf | 2011-05-09 22:23:57 -0700 | [diff] [blame] | 3723 | cm_event.status = 0; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3724 | cm_event.provider_data = (void *)cm_node; |
| 3725 | |
| 3726 | cm_event.local_addr.sin_family = AF_INET; |
| 3727 | cm_event.local_addr.sin_port = htons(event->cm_info.loc_port); |
| 3728 | cm_event.local_addr.sin_addr.s_addr = htonl(event->cm_info.loc_addr); |
| 3729 | |
| 3730 | cm_event.remote_addr.sin_family = AF_INET; |
| 3731 | cm_event.remote_addr.sin_port = htons(event->cm_info.rem_port); |
| 3732 | cm_event.remote_addr.sin_addr.s_addr = htonl(event->cm_info.rem_addr); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 3733 | cm_event.private_data = cm_node->mpa_frame_buf; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3734 | cm_event.private_data_len = (u8)cm_node->mpa_frame_size; |
| 3735 | cm_event.ird = cm_node->ird_size; |
| 3736 | cm_event.ord = cm_node->ord_size; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3737 | |
| 3738 | ret = cm_id->event_handler(cm_id, &cm_event); |
| 3739 | if (ret) |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 3740 | printk(KERN_ERR "%s[%u] OFA CM event_handler returned, ret=%d\n", |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3741 | __func__, __LINE__, ret); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 3742 | return; |
| 3743 | } |
| 3744 | |
| 3745 | |
| 3746 | static void cm_event_mpa_reject(struct nes_cm_event *event) |
| 3747 | { |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3748 | struct iw_cm_id *cm_id; |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 3749 | struct iw_cm_event cm_event; |
| 3750 | struct nes_cm_node *cm_node; |
| 3751 | int ret; |
| 3752 | |
| 3753 | cm_node = event->cm_node; |
| 3754 | if (!cm_node) |
| 3755 | return; |
| 3756 | cm_id = cm_node->cm_id; |
| 3757 | |
| 3758 | atomic_inc(&cm_connect_reqs); |
| 3759 | nes_debug(NES_DBG_CM, "cm_node = %p - cm_id = %p, jiffies = %lu\n", |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3760 | cm_node, cm_id, jiffies); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 3761 | |
| 3762 | cm_event.event = IW_CM_EVENT_CONNECT_REPLY; |
| 3763 | cm_event.status = -ECONNREFUSED; |
| 3764 | cm_event.provider_data = cm_id->provider_data; |
| 3765 | |
| 3766 | cm_event.local_addr.sin_family = AF_INET; |
| 3767 | cm_event.local_addr.sin_port = htons(event->cm_info.loc_port); |
| 3768 | cm_event.local_addr.sin_addr.s_addr = htonl(event->cm_info.loc_addr); |
| 3769 | |
| 3770 | cm_event.remote_addr.sin_family = AF_INET; |
| 3771 | cm_event.remote_addr.sin_port = htons(event->cm_info.rem_port); |
| 3772 | cm_event.remote_addr.sin_addr.s_addr = htonl(event->cm_info.rem_addr); |
| 3773 | |
| 3774 | cm_event.private_data = cm_node->mpa_frame_buf; |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3775 | cm_event.private_data_len = (u8)cm_node->mpa_frame_size; |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 3776 | |
| 3777 | nes_debug(NES_DBG_CM, "call CM_EVENT_MPA_REJECTED, local_addr=%08x, " |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3778 | "remove_addr=%08x\n", |
| 3779 | cm_event.local_addr.sin_addr.s_addr, |
| 3780 | cm_event.remote_addr.sin_addr.s_addr); |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 3781 | |
| 3782 | ret = cm_id->event_handler(cm_id, &cm_event); |
| 3783 | if (ret) |
| 3784 | printk(KERN_ERR "%s[%u] OFA CM event_handler returned, ret=%d\n", |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3785 | __func__, __LINE__, ret); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3786 | |
| 3787 | return; |
| 3788 | } |
| 3789 | |
| 3790 | |
| 3791 | static void nes_cm_event_handler(struct work_struct *); |
| 3792 | |
| 3793 | /** |
| 3794 | * nes_cm_post_event |
| 3795 | * post an event to the cm event handler |
| 3796 | */ |
Roland Dreier | 1a855fb | 2008-04-16 21:01:09 -0700 | [diff] [blame] | 3797 | static int nes_cm_post_event(struct nes_cm_event *event) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3798 | { |
| 3799 | atomic_inc(&event->cm_node->cm_core->events_posted); |
| 3800 | add_ref_cm_node(event->cm_node); |
| 3801 | event->cm_info.cm_id->add_ref(event->cm_info.cm_id); |
| 3802 | INIT_WORK(&event->event_work, nes_cm_event_handler); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3803 | nes_debug(NES_DBG_CM, "cm_node=%p queue_work, event=%p\n", |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3804 | event->cm_node, event); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3805 | |
| 3806 | queue_work(event->cm_node->cm_core->event_wq, &event->event_work); |
| 3807 | |
| 3808 | nes_debug(NES_DBG_CM, "Exit\n"); |
| 3809 | return 0; |
| 3810 | } |
| 3811 | |
| 3812 | |
| 3813 | /** |
| 3814 | * nes_cm_event_handler |
| 3815 | * worker function to handle cm events |
| 3816 | * will free instance of nes_cm_event |
| 3817 | */ |
| 3818 | static void nes_cm_event_handler(struct work_struct *work) |
| 3819 | { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3820 | struct nes_cm_event *event = container_of(work, struct nes_cm_event, |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3821 | event_work); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3822 | struct nes_cm_core *cm_core; |
| 3823 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3824 | if ((!event) || (!event->cm_node) || (!event->cm_node->cm_core)) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3825 | return; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3826 | |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3827 | cm_core = event->cm_node->cm_core; |
| 3828 | nes_debug(NES_DBG_CM, "event=%p, event->type=%u, events posted=%u\n", |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3829 | event, event->type, atomic_read(&cm_core->events_posted)); |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3830 | |
| 3831 | switch (event->type) { |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3832 | case NES_CM_EVENT_MPA_REQ: |
| 3833 | cm_event_mpa_req(event); |
| 3834 | nes_debug(NES_DBG_CM, "cm_node=%p CM Event: MPA REQUEST\n", |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3835 | event->cm_node); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3836 | break; |
| 3837 | case NES_CM_EVENT_RESET: |
| 3838 | nes_debug(NES_DBG_CM, "cm_node = %p CM Event: RESET\n", |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3839 | event->cm_node); |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3840 | cm_event_reset(event); |
| 3841 | break; |
| 3842 | case NES_CM_EVENT_CONNECTED: |
| 3843 | if ((!event->cm_node->cm_id) || |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3844 | (event->cm_node->state != NES_CM_STATE_TSA)) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3845 | break; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3846 | cm_event_connected(event); |
| 3847 | nes_debug(NES_DBG_CM, "CM Event: CONNECTED\n"); |
| 3848 | break; |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 3849 | case NES_CM_EVENT_MPA_REJECT: |
| 3850 | if ((!event->cm_node->cm_id) || |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3851 | (event->cm_node->state == NES_CM_STATE_TSA)) |
Faisal Latif | 9d5ab13 | 2009-03-06 15:15:01 -0800 | [diff] [blame] | 3852 | break; |
| 3853 | cm_event_mpa_reject(event); |
| 3854 | nes_debug(NES_DBG_CM, "CM Event: REJECT\n"); |
| 3855 | break; |
| 3856 | |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3857 | case NES_CM_EVENT_ABORTED: |
| 3858 | if ((!event->cm_node->cm_id) || |
Tatyana Nikolova | 615eb71 | 2011-09-25 20:17:46 +0530 | [diff] [blame^] | 3859 | (event->cm_node->state == NES_CM_STATE_TSA)) |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3860 | break; |
Faisal Latif | 6492cdf | 2008-07-24 20:50:45 -0700 | [diff] [blame] | 3861 | cm_event_connect_error(event); |
| 3862 | nes_debug(NES_DBG_CM, "CM Event: ABORTED\n"); |
| 3863 | break; |
| 3864 | case NES_CM_EVENT_DROPPED_PKT: |
| 3865 | nes_debug(NES_DBG_CM, "CM Event: DROPPED PKT\n"); |
| 3866 | break; |
| 3867 | default: |
| 3868 | nes_debug(NES_DBG_CM, "CM Event: UNKNOWN EVENT TYPE\n"); |
| 3869 | break; |
Glenn Streiff | 3c2d774 | 2008-02-04 20:20:45 -0800 | [diff] [blame] | 3870 | } |
| 3871 | |
| 3872 | atomic_dec(&cm_core->events_posted); |
| 3873 | event->cm_info.cm_id->rem_ref(event->cm_info.cm_id); |
| 3874 | rem_ref_cm_node(cm_core, event->cm_node); |
| 3875 | kfree(event); |
| 3876 | |
| 3877 | return; |
| 3878 | } |