Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2009-2010 Chelsio, Inc. All rights reserved. |
| 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 | #include <linux/module.h> |
| 33 | #include <linux/list.h> |
| 34 | #include <linux/workqueue.h> |
| 35 | #include <linux/skbuff.h> |
| 36 | #include <linux/timer.h> |
| 37 | #include <linux/notifier.h> |
| 38 | #include <linux/inetdevice.h> |
| 39 | #include <linux/ip.h> |
| 40 | #include <linux/tcp.h> |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 41 | #include <linux/if_vlan.h> |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 42 | |
| 43 | #include <net/neighbour.h> |
| 44 | #include <net/netevent.h> |
| 45 | #include <net/route.h> |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 46 | #include <net/tcp.h> |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 47 | |
| 48 | #include "iw_cxgb4.h" |
| 49 | |
| 50 | static char *states[] = { |
| 51 | "idle", |
| 52 | "listen", |
| 53 | "connecting", |
| 54 | "mpa_wait_req", |
| 55 | "mpa_req_sent", |
| 56 | "mpa_req_rcvd", |
| 57 | "mpa_rep_sent", |
| 58 | "fpdu_mode", |
| 59 | "aborting", |
| 60 | "closing", |
| 61 | "moribund", |
| 62 | "dead", |
| 63 | NULL, |
| 64 | }; |
| 65 | |
Vipul Pandya | 5be78ee | 2012-12-10 09:30:54 +0000 | [diff] [blame] | 66 | static int nocong; |
| 67 | module_param(nocong, int, 0644); |
| 68 | MODULE_PARM_DESC(nocong, "Turn of congestion control (default=0)"); |
| 69 | |
| 70 | static int enable_ecn; |
| 71 | module_param(enable_ecn, int, 0644); |
| 72 | MODULE_PARM_DESC(enable_ecn, "Enable ECN (default=0/disabled)"); |
| 73 | |
Steve Wise | b52fe09 | 2011-03-11 22:30:01 +0000 | [diff] [blame] | 74 | static int dack_mode = 1; |
Steve Wise | ba6d392 | 2010-06-23 15:46:49 +0000 | [diff] [blame] | 75 | module_param(dack_mode, int, 0644); |
Steve Wise | b52fe09 | 2011-03-11 22:30:01 +0000 | [diff] [blame] | 76 | MODULE_PARM_DESC(dack_mode, "Delayed ack mode (default=1)"); |
Steve Wise | ba6d392 | 2010-06-23 15:46:49 +0000 | [diff] [blame] | 77 | |
Roland Dreier | be4c9ba | 2010-05-05 14:45:40 -0700 | [diff] [blame] | 78 | int c4iw_max_read_depth = 8; |
| 79 | module_param(c4iw_max_read_depth, int, 0644); |
| 80 | MODULE_PARM_DESC(c4iw_max_read_depth, "Per-connection max ORD/IRD (default=8)"); |
| 81 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 82 | static int enable_tcp_timestamps; |
| 83 | module_param(enable_tcp_timestamps, int, 0644); |
| 84 | MODULE_PARM_DESC(enable_tcp_timestamps, "Enable tcp timestamps (default=0)"); |
| 85 | |
| 86 | static int enable_tcp_sack; |
| 87 | module_param(enable_tcp_sack, int, 0644); |
| 88 | MODULE_PARM_DESC(enable_tcp_sack, "Enable tcp SACK (default=0)"); |
| 89 | |
| 90 | static int enable_tcp_window_scaling = 1; |
| 91 | module_param(enable_tcp_window_scaling, int, 0644); |
| 92 | MODULE_PARM_DESC(enable_tcp_window_scaling, |
| 93 | "Enable tcp window scaling (default=1)"); |
| 94 | |
| 95 | int c4iw_debug; |
| 96 | module_param(c4iw_debug, int, 0644); |
| 97 | MODULE_PARM_DESC(c4iw_debug, "Enable debug logging (default=0)"); |
| 98 | |
| 99 | static int peer2peer; |
| 100 | module_param(peer2peer, int, 0644); |
| 101 | MODULE_PARM_DESC(peer2peer, "Support peer2peer ULPs (default=0)"); |
| 102 | |
| 103 | static int p2p_type = FW_RI_INIT_P2PTYPE_READ_REQ; |
| 104 | module_param(p2p_type, int, 0644); |
| 105 | MODULE_PARM_DESC(p2p_type, "RDMAP opcode to use for the RTR message: " |
| 106 | "1=RDMA_READ 0=RDMA_WRITE (default 1)"); |
| 107 | |
| 108 | static int ep_timeout_secs = 60; |
| 109 | module_param(ep_timeout_secs, int, 0644); |
| 110 | MODULE_PARM_DESC(ep_timeout_secs, "CM Endpoint operation timeout " |
| 111 | "in seconds (default=60)"); |
| 112 | |
| 113 | static int mpa_rev = 1; |
| 114 | module_param(mpa_rev, int, 0644); |
| 115 | MODULE_PARM_DESC(mpa_rev, "MPA Revision, 0 supports amso1100, " |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 116 | "1 is RFC0544 spec compliant, 2 is IETF MPA Peer Connect Draft" |
| 117 | " compliant (default=1)"); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 118 | |
| 119 | static int markers_enabled; |
| 120 | module_param(markers_enabled, int, 0644); |
| 121 | MODULE_PARM_DESC(markers_enabled, "Enable MPA MARKERS (default(0)=disabled)"); |
| 122 | |
| 123 | static int crc_enabled = 1; |
| 124 | module_param(crc_enabled, int, 0644); |
| 125 | MODULE_PARM_DESC(crc_enabled, "Enable MPA CRC (default(1)=enabled)"); |
| 126 | |
| 127 | static int rcv_win = 256 * 1024; |
| 128 | module_param(rcv_win, int, 0644); |
| 129 | MODULE_PARM_DESC(rcv_win, "TCP receive window in bytes (default=256KB)"); |
| 130 | |
Steve Wise | 98ae68b | 2010-09-10 11:15:41 -0500 | [diff] [blame] | 131 | static int snd_win = 128 * 1024; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 132 | module_param(snd_win, int, 0644); |
Steve Wise | 98ae68b | 2010-09-10 11:15:41 -0500 | [diff] [blame] | 133 | MODULE_PARM_DESC(snd_win, "TCP send window in bytes (default=128KB)"); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 134 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 135 | static struct workqueue_struct *workq; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 136 | |
| 137 | static struct sk_buff_head rxq; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 138 | |
| 139 | static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp); |
| 140 | static void ep_timeout(unsigned long arg); |
| 141 | static void connect_reply_upcall(struct c4iw_ep *ep, int status); |
| 142 | |
Roland Dreier | be4c9ba | 2010-05-05 14:45:40 -0700 | [diff] [blame] | 143 | static LIST_HEAD(timeout_list); |
| 144 | static spinlock_t timeout_lock; |
| 145 | |
Vipul Pandya | 325abea | 2013-01-07 13:11:53 +0000 | [diff] [blame] | 146 | static void deref_qp(struct c4iw_ep *ep) |
| 147 | { |
| 148 | c4iw_qp_rem_ref(&ep->com.qp->ibqp); |
| 149 | clear_bit(QP_REFERENCED, &ep->com.flags); |
| 150 | } |
| 151 | |
| 152 | static void ref_qp(struct c4iw_ep *ep) |
| 153 | { |
| 154 | set_bit(QP_REFERENCED, &ep->com.flags); |
| 155 | c4iw_qp_add_ref(&ep->com.qp->ibqp); |
| 156 | } |
| 157 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 158 | static void start_ep_timer(struct c4iw_ep *ep) |
| 159 | { |
| 160 | PDBG("%s ep %p\n", __func__, ep); |
| 161 | if (timer_pending(&ep->timer)) { |
| 162 | PDBG("%s stopped / restarted timer ep %p\n", __func__, ep); |
| 163 | del_timer_sync(&ep->timer); |
| 164 | } else |
| 165 | c4iw_get_ep(&ep->com); |
| 166 | ep->timer.expires = jiffies + ep_timeout_secs * HZ; |
| 167 | ep->timer.data = (unsigned long)ep; |
| 168 | ep->timer.function = ep_timeout; |
| 169 | add_timer(&ep->timer); |
| 170 | } |
| 171 | |
| 172 | static void stop_ep_timer(struct c4iw_ep *ep) |
| 173 | { |
| 174 | PDBG("%s ep %p\n", __func__, ep); |
| 175 | if (!timer_pending(&ep->timer)) { |
Julia Lawall | 76f267b | 2012-11-03 10:58:27 +0000 | [diff] [blame] | 176 | WARN(1, "%s timer stopped when its not running! " |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 177 | "ep %p state %u\n", __func__, ep, ep->com.state); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 178 | return; |
| 179 | } |
| 180 | del_timer_sync(&ep->timer); |
| 181 | c4iw_put_ep(&ep->com); |
| 182 | } |
| 183 | |
| 184 | static int c4iw_l2t_send(struct c4iw_rdev *rdev, struct sk_buff *skb, |
| 185 | struct l2t_entry *l2e) |
| 186 | { |
| 187 | int error = 0; |
| 188 | |
| 189 | if (c4iw_fatal_error(rdev)) { |
| 190 | kfree_skb(skb); |
| 191 | PDBG("%s - device in error state - dropping\n", __func__); |
| 192 | return -EIO; |
| 193 | } |
| 194 | error = cxgb4_l2t_send(rdev->lldi.ports[0], skb, l2e); |
| 195 | if (error < 0) |
| 196 | kfree_skb(skb); |
Steve Wise | 7459486 | 2010-09-10 11:14:58 -0500 | [diff] [blame] | 197 | return error < 0 ? error : 0; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 198 | } |
| 199 | |
| 200 | int c4iw_ofld_send(struct c4iw_rdev *rdev, struct sk_buff *skb) |
| 201 | { |
| 202 | int error = 0; |
| 203 | |
| 204 | if (c4iw_fatal_error(rdev)) { |
| 205 | kfree_skb(skb); |
| 206 | PDBG("%s - device in error state - dropping\n", __func__); |
| 207 | return -EIO; |
| 208 | } |
| 209 | error = cxgb4_ofld_send(rdev->lldi.ports[0], skb); |
| 210 | if (error < 0) |
| 211 | kfree_skb(skb); |
Steve Wise | 7459486 | 2010-09-10 11:14:58 -0500 | [diff] [blame] | 212 | return error < 0 ? error : 0; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 213 | } |
| 214 | |
| 215 | static void release_tid(struct c4iw_rdev *rdev, u32 hwtid, struct sk_buff *skb) |
| 216 | { |
| 217 | struct cpl_tid_release *req; |
| 218 | |
| 219 | skb = get_skb(skb, sizeof *req, GFP_KERNEL); |
| 220 | if (!skb) |
| 221 | return; |
| 222 | req = (struct cpl_tid_release *) skb_put(skb, sizeof(*req)); |
| 223 | INIT_TP_WR(req, hwtid); |
| 224 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_TID_RELEASE, hwtid)); |
| 225 | set_wr_txq(skb, CPL_PRIORITY_SETUP, 0); |
| 226 | c4iw_ofld_send(rdev, skb); |
| 227 | return; |
| 228 | } |
| 229 | |
| 230 | static void set_emss(struct c4iw_ep *ep, u16 opt) |
| 231 | { |
| 232 | ep->emss = ep->com.dev->rdev.lldi.mtus[GET_TCPOPT_MSS(opt)] - 40; |
| 233 | ep->mss = ep->emss; |
| 234 | if (GET_TCPOPT_TSTAMP(opt)) |
| 235 | ep->emss -= 12; |
| 236 | if (ep->emss < 128) |
| 237 | ep->emss = 128; |
| 238 | PDBG("%s mss_idx %u mss %u emss=%u\n", __func__, GET_TCPOPT_MSS(opt), |
| 239 | ep->mss, ep->emss); |
| 240 | } |
| 241 | |
| 242 | static enum c4iw_ep_state state_read(struct c4iw_ep_common *epc) |
| 243 | { |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 244 | enum c4iw_ep_state state; |
| 245 | |
Steve Wise | 2f5b48c | 2010-09-10 11:15:36 -0500 | [diff] [blame] | 246 | mutex_lock(&epc->mutex); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 247 | state = epc->state; |
Steve Wise | 2f5b48c | 2010-09-10 11:15:36 -0500 | [diff] [blame] | 248 | mutex_unlock(&epc->mutex); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 249 | return state; |
| 250 | } |
| 251 | |
| 252 | static void __state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new) |
| 253 | { |
| 254 | epc->state = new; |
| 255 | } |
| 256 | |
| 257 | static void state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new) |
| 258 | { |
Steve Wise | 2f5b48c | 2010-09-10 11:15:36 -0500 | [diff] [blame] | 259 | mutex_lock(&epc->mutex); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 260 | PDBG("%s - %s -> %s\n", __func__, states[epc->state], states[new]); |
| 261 | __state_set(epc, new); |
Steve Wise | 2f5b48c | 2010-09-10 11:15:36 -0500 | [diff] [blame] | 262 | mutex_unlock(&epc->mutex); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 263 | return; |
| 264 | } |
| 265 | |
| 266 | static void *alloc_ep(int size, gfp_t gfp) |
| 267 | { |
| 268 | struct c4iw_ep_common *epc; |
| 269 | |
| 270 | epc = kzalloc(size, gfp); |
| 271 | if (epc) { |
| 272 | kref_init(&epc->kref); |
Steve Wise | 2f5b48c | 2010-09-10 11:15:36 -0500 | [diff] [blame] | 273 | mutex_init(&epc->mutex); |
Steve Wise | aadc4df | 2010-09-10 11:15:25 -0500 | [diff] [blame] | 274 | c4iw_init_wr_wait(&epc->wr_wait); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 275 | } |
| 276 | PDBG("%s alloc ep %p\n", __func__, epc); |
| 277 | return epc; |
| 278 | } |
| 279 | |
| 280 | void _c4iw_free_ep(struct kref *kref) |
| 281 | { |
| 282 | struct c4iw_ep *ep; |
| 283 | |
| 284 | ep = container_of(kref, struct c4iw_ep, com.kref); |
| 285 | PDBG("%s ep %p state %s\n", __func__, ep, states[state_read(&ep->com)]); |
Vipul Pandya | 325abea | 2013-01-07 13:11:53 +0000 | [diff] [blame] | 286 | if (test_bit(QP_REFERENCED, &ep->com.flags)) |
| 287 | deref_qp(ep); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 288 | if (test_bit(RELEASE_RESOURCES, &ep->com.flags)) { |
| 289 | cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid); |
| 290 | dst_release(ep->dst); |
| 291 | cxgb4_l2t_release(ep->l2t); |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 292 | remove_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep->hwtid); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 293 | } |
| 294 | kfree(ep); |
| 295 | } |
| 296 | |
| 297 | static void release_ep_resources(struct c4iw_ep *ep) |
| 298 | { |
| 299 | set_bit(RELEASE_RESOURCES, &ep->com.flags); |
| 300 | c4iw_put_ep(&ep->com); |
| 301 | } |
| 302 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 303 | static int status2errno(int status) |
| 304 | { |
| 305 | switch (status) { |
| 306 | case CPL_ERR_NONE: |
| 307 | return 0; |
| 308 | case CPL_ERR_CONN_RESET: |
| 309 | return -ECONNRESET; |
| 310 | case CPL_ERR_ARP_MISS: |
| 311 | return -EHOSTUNREACH; |
| 312 | case CPL_ERR_CONN_TIMEDOUT: |
| 313 | return -ETIMEDOUT; |
| 314 | case CPL_ERR_TCAM_FULL: |
| 315 | return -ENOMEM; |
| 316 | case CPL_ERR_CONN_EXIST: |
| 317 | return -EADDRINUSE; |
| 318 | default: |
| 319 | return -EIO; |
| 320 | } |
| 321 | } |
| 322 | |
| 323 | /* |
| 324 | * Try and reuse skbs already allocated... |
| 325 | */ |
| 326 | static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp) |
| 327 | { |
| 328 | if (skb && !skb_is_nonlinear(skb) && !skb_cloned(skb)) { |
| 329 | skb_trim(skb, 0); |
| 330 | skb_get(skb); |
| 331 | skb_reset_transport_header(skb); |
| 332 | } else { |
| 333 | skb = alloc_skb(len, gfp); |
| 334 | } |
| 335 | return skb; |
| 336 | } |
| 337 | |
| 338 | static struct rtable *find_route(struct c4iw_dev *dev, __be32 local_ip, |
| 339 | __be32 peer_ip, __be16 local_port, |
| 340 | __be16 peer_port, u8 tos) |
| 341 | { |
| 342 | struct rtable *rt; |
David S. Miller | 31e4543 | 2011-05-03 20:25:42 -0700 | [diff] [blame] | 343 | struct flowi4 fl4; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 344 | |
David S. Miller | 31e4543 | 2011-05-03 20:25:42 -0700 | [diff] [blame] | 345 | rt = ip_route_output_ports(&init_net, &fl4, NULL, peer_ip, local_ip, |
David S. Miller | 78fbfd8 | 2011-03-12 00:00:52 -0500 | [diff] [blame] | 346 | peer_port, local_port, IPPROTO_TCP, |
| 347 | tos, 0); |
David S. Miller | b23dd4f | 2011-03-02 14:31:35 -0800 | [diff] [blame] | 348 | if (IS_ERR(rt)) |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 349 | return NULL; |
| 350 | return rt; |
| 351 | } |
| 352 | |
| 353 | static void arp_failure_discard(void *handle, struct sk_buff *skb) |
| 354 | { |
| 355 | PDBG("%s c4iw_dev %p\n", __func__, handle); |
| 356 | kfree_skb(skb); |
| 357 | } |
| 358 | |
| 359 | /* |
| 360 | * Handle an ARP failure for an active open. |
| 361 | */ |
| 362 | static void act_open_req_arp_failure(void *handle, struct sk_buff *skb) |
| 363 | { |
| 364 | printk(KERN_ERR MOD "ARP failure duing connect\n"); |
| 365 | kfree_skb(skb); |
| 366 | } |
| 367 | |
| 368 | /* |
| 369 | * Handle an ARP failure for a CPL_ABORT_REQ. Change it into a no RST variant |
| 370 | * and send it along. |
| 371 | */ |
| 372 | static void abort_arp_failure(void *handle, struct sk_buff *skb) |
| 373 | { |
| 374 | struct c4iw_rdev *rdev = handle; |
| 375 | struct cpl_abort_req *req = cplhdr(skb); |
| 376 | |
| 377 | PDBG("%s rdev %p\n", __func__, rdev); |
| 378 | req->cmd = CPL_ABORT_NO_RST; |
| 379 | c4iw_ofld_send(rdev, skb); |
| 380 | } |
| 381 | |
| 382 | static void send_flowc(struct c4iw_ep *ep, struct sk_buff *skb) |
| 383 | { |
| 384 | unsigned int flowclen = 80; |
| 385 | struct fw_flowc_wr *flowc; |
| 386 | int i; |
| 387 | |
| 388 | skb = get_skb(skb, flowclen, GFP_KERNEL); |
| 389 | flowc = (struct fw_flowc_wr *)__skb_put(skb, flowclen); |
| 390 | |
| 391 | flowc->op_to_nparams = cpu_to_be32(FW_WR_OP(FW_FLOWC_WR) | |
| 392 | FW_FLOWC_WR_NPARAMS(8)); |
| 393 | flowc->flowid_len16 = cpu_to_be32(FW_WR_LEN16(DIV_ROUND_UP(flowclen, |
| 394 | 16)) | FW_WR_FLOWID(ep->hwtid)); |
| 395 | |
| 396 | flowc->mnemval[0].mnemonic = FW_FLOWC_MNEM_PFNVFN; |
Steve Wise | 94788657 | 2011-01-21 17:00:34 +0000 | [diff] [blame] | 397 | flowc->mnemval[0].val = cpu_to_be32(PCI_FUNC(ep->com.dev->rdev.lldi.pdev->devfn) << 8); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 398 | flowc->mnemval[1].mnemonic = FW_FLOWC_MNEM_CH; |
| 399 | flowc->mnemval[1].val = cpu_to_be32(ep->tx_chan); |
| 400 | flowc->mnemval[2].mnemonic = FW_FLOWC_MNEM_PORT; |
| 401 | flowc->mnemval[2].val = cpu_to_be32(ep->tx_chan); |
| 402 | flowc->mnemval[3].mnemonic = FW_FLOWC_MNEM_IQID; |
| 403 | flowc->mnemval[3].val = cpu_to_be32(ep->rss_qid); |
| 404 | flowc->mnemval[4].mnemonic = FW_FLOWC_MNEM_SNDNXT; |
| 405 | flowc->mnemval[4].val = cpu_to_be32(ep->snd_seq); |
| 406 | flowc->mnemval[5].mnemonic = FW_FLOWC_MNEM_RCVNXT; |
| 407 | flowc->mnemval[5].val = cpu_to_be32(ep->rcv_seq); |
| 408 | flowc->mnemval[6].mnemonic = FW_FLOWC_MNEM_SNDBUF; |
| 409 | flowc->mnemval[6].val = cpu_to_be32(snd_win); |
| 410 | flowc->mnemval[7].mnemonic = FW_FLOWC_MNEM_MSS; |
| 411 | flowc->mnemval[7].val = cpu_to_be32(ep->emss); |
| 412 | /* Pad WR to 16 byte boundary */ |
| 413 | flowc->mnemval[8].mnemonic = 0; |
| 414 | flowc->mnemval[8].val = 0; |
| 415 | for (i = 0; i < 9; i++) { |
| 416 | flowc->mnemval[i].r4[0] = 0; |
| 417 | flowc->mnemval[i].r4[1] = 0; |
| 418 | flowc->mnemval[i].r4[2] = 0; |
| 419 | } |
| 420 | |
| 421 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); |
| 422 | c4iw_ofld_send(&ep->com.dev->rdev, skb); |
| 423 | } |
| 424 | |
| 425 | static int send_halfclose(struct c4iw_ep *ep, gfp_t gfp) |
| 426 | { |
| 427 | struct cpl_close_con_req *req; |
| 428 | struct sk_buff *skb; |
| 429 | int wrlen = roundup(sizeof *req, 16); |
| 430 | |
| 431 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
| 432 | skb = get_skb(NULL, wrlen, gfp); |
| 433 | if (!skb) { |
| 434 | printk(KERN_ERR MOD "%s - failed to alloc skb\n", __func__); |
| 435 | return -ENOMEM; |
| 436 | } |
| 437 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); |
| 438 | t4_set_arp_err_handler(skb, NULL, arp_failure_discard); |
| 439 | req = (struct cpl_close_con_req *) skb_put(skb, wrlen); |
| 440 | memset(req, 0, wrlen); |
| 441 | INIT_TP_WR(req, ep->hwtid); |
| 442 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_CLOSE_CON_REQ, |
| 443 | ep->hwtid)); |
| 444 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); |
| 445 | } |
| 446 | |
| 447 | static int send_abort(struct c4iw_ep *ep, struct sk_buff *skb, gfp_t gfp) |
| 448 | { |
| 449 | struct cpl_abort_req *req; |
| 450 | int wrlen = roundup(sizeof *req, 16); |
| 451 | |
| 452 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
| 453 | skb = get_skb(skb, wrlen, gfp); |
| 454 | if (!skb) { |
| 455 | printk(KERN_ERR MOD "%s - failed to alloc skb.\n", |
| 456 | __func__); |
| 457 | return -ENOMEM; |
| 458 | } |
| 459 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); |
| 460 | t4_set_arp_err_handler(skb, &ep->com.dev->rdev, abort_arp_failure); |
| 461 | req = (struct cpl_abort_req *) skb_put(skb, wrlen); |
| 462 | memset(req, 0, wrlen); |
| 463 | INIT_TP_WR(req, ep->hwtid); |
| 464 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_REQ, ep->hwtid)); |
| 465 | req->cmd = CPL_ABORT_SEND_RST; |
| 466 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); |
| 467 | } |
| 468 | |
Vipul Pandya | 5be78ee | 2012-12-10 09:30:54 +0000 | [diff] [blame] | 469 | #define VLAN_NONE 0xfff |
| 470 | #define FILTER_SEL_VLAN_NONE 0xffff |
| 471 | #define FILTER_SEL_WIDTH_P_FC (3+1) /* port uses 3 bits, FCoE one bit */ |
| 472 | #define FILTER_SEL_WIDTH_VIN_P_FC \ |
| 473 | (6 + 7 + FILTER_SEL_WIDTH_P_FC) /* 6 bits are unused, VF uses 7 bits*/ |
| 474 | #define FILTER_SEL_WIDTH_TAG_P_FC \ |
| 475 | (3 + FILTER_SEL_WIDTH_VIN_P_FC) /* PF uses 3 bits */ |
| 476 | #define FILTER_SEL_WIDTH_VLD_TAG_P_FC (1 + FILTER_SEL_WIDTH_TAG_P_FC) |
| 477 | |
| 478 | static unsigned int select_ntuple(struct c4iw_dev *dev, struct dst_entry *dst, |
| 479 | struct l2t_entry *l2t) |
| 480 | { |
| 481 | unsigned int ntuple = 0; |
| 482 | u32 viid; |
| 483 | |
| 484 | switch (dev->rdev.lldi.filt_mode) { |
| 485 | |
| 486 | /* default filter mode */ |
| 487 | case HW_TPL_FR_MT_PR_IV_P_FC: |
| 488 | if (l2t->vlan == VLAN_NONE) |
| 489 | ntuple |= FILTER_SEL_VLAN_NONE << FILTER_SEL_WIDTH_P_FC; |
| 490 | else { |
| 491 | ntuple |= l2t->vlan << FILTER_SEL_WIDTH_P_FC; |
| 492 | ntuple |= 1 << FILTER_SEL_WIDTH_VLD_TAG_P_FC; |
| 493 | } |
| 494 | ntuple |= l2t->lport << S_PORT | IPPROTO_TCP << |
| 495 | FILTER_SEL_WIDTH_VLD_TAG_P_FC; |
| 496 | break; |
| 497 | case HW_TPL_FR_MT_PR_OV_P_FC: { |
| 498 | viid = cxgb4_port_viid(l2t->neigh->dev); |
| 499 | |
| 500 | ntuple |= FW_VIID_VIN_GET(viid) << FILTER_SEL_WIDTH_P_FC; |
| 501 | ntuple |= FW_VIID_PFN_GET(viid) << FILTER_SEL_WIDTH_VIN_P_FC; |
| 502 | ntuple |= FW_VIID_VIVLD_GET(viid) << FILTER_SEL_WIDTH_TAG_P_FC; |
| 503 | ntuple |= l2t->lport << S_PORT | IPPROTO_TCP << |
| 504 | FILTER_SEL_WIDTH_VLD_TAG_P_FC; |
| 505 | break; |
| 506 | } |
| 507 | default: |
| 508 | break; |
| 509 | } |
| 510 | return ntuple; |
| 511 | } |
| 512 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 513 | static int send_connect(struct c4iw_ep *ep) |
| 514 | { |
| 515 | struct cpl_act_open_req *req; |
| 516 | struct sk_buff *skb; |
| 517 | u64 opt0; |
| 518 | u32 opt2; |
| 519 | unsigned int mtu_idx; |
| 520 | int wscale; |
| 521 | int wrlen = roundup(sizeof *req, 16); |
| 522 | |
| 523 | PDBG("%s ep %p atid %u\n", __func__, ep, ep->atid); |
| 524 | |
| 525 | skb = get_skb(NULL, wrlen, GFP_KERNEL); |
| 526 | if (!skb) { |
| 527 | printk(KERN_ERR MOD "%s - failed to alloc skb.\n", |
| 528 | __func__); |
| 529 | return -ENOMEM; |
| 530 | } |
Steve Wise | d4f1a5c | 2010-07-23 19:12:32 +0000 | [diff] [blame] | 531 | set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 532 | |
| 533 | cxgb4_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx); |
| 534 | wscale = compute_wscale(rcv_win); |
Vipul Pandya | 5be78ee | 2012-12-10 09:30:54 +0000 | [diff] [blame] | 535 | opt0 = (nocong ? NO_CONG(1) : 0) | |
| 536 | KEEP_ALIVE(1) | |
Steve Wise | ba6d392 | 2010-06-23 15:46:49 +0000 | [diff] [blame] | 537 | DELACK(1) | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 538 | WND_SCALE(wscale) | |
| 539 | MSS_IDX(mtu_idx) | |
| 540 | L2T_IDX(ep->l2t->idx) | |
| 541 | TX_CHAN(ep->tx_chan) | |
| 542 | SMAC_SEL(ep->smac_idx) | |
| 543 | DSCP(ep->tos) | |
Steve Wise | b48f3b9 | 2011-03-11 22:30:21 +0000 | [diff] [blame] | 544 | ULP_MODE(ULP_MODE_TCPDDP) | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 545 | RCV_BUFSIZ(rcv_win>>10); |
| 546 | opt2 = RX_CHANNEL(0) | |
Vipul Pandya | 5be78ee | 2012-12-10 09:30:54 +0000 | [diff] [blame] | 547 | CCTRL_ECN(enable_ecn) | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 548 | RSS_QUEUE_VALID | RSS_QUEUE(ep->rss_qid); |
| 549 | if (enable_tcp_timestamps) |
| 550 | opt2 |= TSTAMPS_EN(1); |
| 551 | if (enable_tcp_sack) |
| 552 | opt2 |= SACK_EN(1); |
| 553 | if (wscale && enable_tcp_window_scaling) |
| 554 | opt2 |= WND_SCALE_EN(1); |
| 555 | t4_set_arp_err_handler(skb, NULL, act_open_req_arp_failure); |
| 556 | |
| 557 | req = (struct cpl_act_open_req *) skb_put(skb, wrlen); |
| 558 | INIT_TP_WR(req, 0); |
| 559 | OPCODE_TID(req) = cpu_to_be32( |
| 560 | MK_OPCODE_TID(CPL_ACT_OPEN_REQ, ((ep->rss_qid<<14)|ep->atid))); |
| 561 | req->local_port = ep->com.local_addr.sin_port; |
| 562 | req->peer_port = ep->com.remote_addr.sin_port; |
| 563 | req->local_ip = ep->com.local_addr.sin_addr.s_addr; |
| 564 | req->peer_ip = ep->com.remote_addr.sin_addr.s_addr; |
| 565 | req->opt0 = cpu_to_be64(opt0); |
Vipul Pandya | 5be78ee | 2012-12-10 09:30:54 +0000 | [diff] [blame] | 566 | req->params = cpu_to_be32(select_ntuple(ep->com.dev, ep->dst, ep->l2t)); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 567 | req->opt2 = cpu_to_be32(opt2); |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 568 | set_bit(ACT_OPEN_REQ, &ep->com.history); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 569 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); |
| 570 | } |
| 571 | |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 572 | static void send_mpa_req(struct c4iw_ep *ep, struct sk_buff *skb, |
| 573 | u8 mpa_rev_to_use) |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 574 | { |
| 575 | int mpalen, wrlen; |
| 576 | struct fw_ofld_tx_data_wr *req; |
| 577 | struct mpa_message *mpa; |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 578 | struct mpa_v2_conn_params mpa_v2_params; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 579 | |
| 580 | PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen); |
| 581 | |
| 582 | BUG_ON(skb_cloned(skb)); |
| 583 | |
| 584 | mpalen = sizeof(*mpa) + ep->plen; |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 585 | if (mpa_rev_to_use == 2) |
| 586 | mpalen += sizeof(struct mpa_v2_conn_params); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 587 | wrlen = roundup(mpalen + sizeof *req, 16); |
| 588 | skb = get_skb(skb, wrlen, GFP_KERNEL); |
| 589 | if (!skb) { |
| 590 | connect_reply_upcall(ep, -ENOMEM); |
| 591 | return; |
| 592 | } |
| 593 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); |
| 594 | |
| 595 | req = (struct fw_ofld_tx_data_wr *)skb_put(skb, wrlen); |
| 596 | memset(req, 0, wrlen); |
| 597 | req->op_to_immdlen = cpu_to_be32( |
| 598 | FW_WR_OP(FW_OFLD_TX_DATA_WR) | |
| 599 | FW_WR_COMPL(1) | |
| 600 | FW_WR_IMMDLEN(mpalen)); |
| 601 | req->flowid_len16 = cpu_to_be32( |
| 602 | FW_WR_FLOWID(ep->hwtid) | |
| 603 | FW_WR_LEN16(wrlen >> 4)); |
| 604 | req->plen = cpu_to_be32(mpalen); |
| 605 | req->tunnel_to_proxy = cpu_to_be32( |
| 606 | FW_OFLD_TX_DATA_WR_FLUSH(1) | |
| 607 | FW_OFLD_TX_DATA_WR_SHOVE(1)); |
| 608 | |
| 609 | mpa = (struct mpa_message *)(req + 1); |
| 610 | memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key)); |
| 611 | mpa->flags = (crc_enabled ? MPA_CRC : 0) | |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 612 | (markers_enabled ? MPA_MARKERS : 0) | |
| 613 | (mpa_rev_to_use == 2 ? MPA_ENHANCED_RDMA_CONN : 0); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 614 | mpa->private_data_size = htons(ep->plen); |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 615 | mpa->revision = mpa_rev_to_use; |
Kumar Sanghvi | 01b225e | 2011-11-28 22:09:15 +0530 | [diff] [blame] | 616 | if (mpa_rev_to_use == 1) { |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 617 | ep->tried_with_mpa_v1 = 1; |
Kumar Sanghvi | 01b225e | 2011-11-28 22:09:15 +0530 | [diff] [blame] | 618 | ep->retry_with_mpa_v1 = 0; |
| 619 | } |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 620 | |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 621 | if (mpa_rev_to_use == 2) { |
Roland Dreier | f747c34 | 2012-07-05 14:16:54 -0700 | [diff] [blame] | 622 | mpa->private_data_size = htons(ntohs(mpa->private_data_size) + |
| 623 | sizeof (struct mpa_v2_conn_params)); |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 624 | mpa_v2_params.ird = htons((u16)ep->ird); |
| 625 | mpa_v2_params.ord = htons((u16)ep->ord); |
| 626 | |
| 627 | if (peer2peer) { |
| 628 | mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); |
| 629 | if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) |
| 630 | mpa_v2_params.ord |= |
| 631 | htons(MPA_V2_RDMA_WRITE_RTR); |
| 632 | else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) |
| 633 | mpa_v2_params.ord |= |
| 634 | htons(MPA_V2_RDMA_READ_RTR); |
| 635 | } |
| 636 | memcpy(mpa->private_data, &mpa_v2_params, |
| 637 | sizeof(struct mpa_v2_conn_params)); |
| 638 | |
| 639 | if (ep->plen) |
| 640 | memcpy(mpa->private_data + |
| 641 | sizeof(struct mpa_v2_conn_params), |
| 642 | ep->mpa_pkt + sizeof(*mpa), ep->plen); |
| 643 | } else |
| 644 | if (ep->plen) |
| 645 | memcpy(mpa->private_data, |
| 646 | ep->mpa_pkt + sizeof(*mpa), ep->plen); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 647 | |
| 648 | /* |
| 649 | * Reference the mpa skb. This ensures the data area |
| 650 | * will remain in memory until the hw acks the tx. |
| 651 | * Function fw4_ack() will deref it. |
| 652 | */ |
| 653 | skb_get(skb); |
| 654 | t4_set_arp_err_handler(skb, NULL, arp_failure_discard); |
| 655 | BUG_ON(ep->mpa_skb); |
| 656 | ep->mpa_skb = skb; |
| 657 | c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); |
| 658 | start_ep_timer(ep); |
| 659 | state_set(&ep->com, MPA_REQ_SENT); |
| 660 | ep->mpa_attr.initiator = 1; |
| 661 | return; |
| 662 | } |
| 663 | |
| 664 | static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen) |
| 665 | { |
| 666 | int mpalen, wrlen; |
| 667 | struct fw_ofld_tx_data_wr *req; |
| 668 | struct mpa_message *mpa; |
| 669 | struct sk_buff *skb; |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 670 | struct mpa_v2_conn_params mpa_v2_params; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 671 | |
| 672 | PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen); |
| 673 | |
| 674 | mpalen = sizeof(*mpa) + plen; |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 675 | if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) |
| 676 | mpalen += sizeof(struct mpa_v2_conn_params); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 677 | wrlen = roundup(mpalen + sizeof *req, 16); |
| 678 | |
| 679 | skb = get_skb(NULL, wrlen, GFP_KERNEL); |
| 680 | if (!skb) { |
| 681 | printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__); |
| 682 | return -ENOMEM; |
| 683 | } |
| 684 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); |
| 685 | |
| 686 | req = (struct fw_ofld_tx_data_wr *)skb_put(skb, wrlen); |
| 687 | memset(req, 0, wrlen); |
| 688 | req->op_to_immdlen = cpu_to_be32( |
| 689 | FW_WR_OP(FW_OFLD_TX_DATA_WR) | |
| 690 | FW_WR_COMPL(1) | |
| 691 | FW_WR_IMMDLEN(mpalen)); |
| 692 | req->flowid_len16 = cpu_to_be32( |
| 693 | FW_WR_FLOWID(ep->hwtid) | |
| 694 | FW_WR_LEN16(wrlen >> 4)); |
| 695 | req->plen = cpu_to_be32(mpalen); |
| 696 | req->tunnel_to_proxy = cpu_to_be32( |
| 697 | FW_OFLD_TX_DATA_WR_FLUSH(1) | |
| 698 | FW_OFLD_TX_DATA_WR_SHOVE(1)); |
| 699 | |
| 700 | mpa = (struct mpa_message *)(req + 1); |
| 701 | memset(mpa, 0, sizeof(*mpa)); |
| 702 | memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); |
| 703 | mpa->flags = MPA_REJECT; |
| 704 | mpa->revision = mpa_rev; |
| 705 | mpa->private_data_size = htons(plen); |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 706 | |
| 707 | if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { |
| 708 | mpa->flags |= MPA_ENHANCED_RDMA_CONN; |
Roland Dreier | f747c34 | 2012-07-05 14:16:54 -0700 | [diff] [blame] | 709 | mpa->private_data_size = htons(ntohs(mpa->private_data_size) + |
| 710 | sizeof (struct mpa_v2_conn_params)); |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 711 | mpa_v2_params.ird = htons(((u16)ep->ird) | |
| 712 | (peer2peer ? MPA_V2_PEER2PEER_MODEL : |
| 713 | 0)); |
| 714 | mpa_v2_params.ord = htons(((u16)ep->ord) | (peer2peer ? |
| 715 | (p2p_type == |
| 716 | FW_RI_INIT_P2PTYPE_RDMA_WRITE ? |
| 717 | MPA_V2_RDMA_WRITE_RTR : p2p_type == |
| 718 | FW_RI_INIT_P2PTYPE_READ_REQ ? |
| 719 | MPA_V2_RDMA_READ_RTR : 0) : 0)); |
| 720 | memcpy(mpa->private_data, &mpa_v2_params, |
| 721 | sizeof(struct mpa_v2_conn_params)); |
| 722 | |
| 723 | if (ep->plen) |
| 724 | memcpy(mpa->private_data + |
| 725 | sizeof(struct mpa_v2_conn_params), pdata, plen); |
| 726 | } else |
| 727 | if (plen) |
| 728 | memcpy(mpa->private_data, pdata, plen); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 729 | |
| 730 | /* |
| 731 | * Reference the mpa skb again. This ensures the data area |
| 732 | * will remain in memory until the hw acks the tx. |
| 733 | * Function fw4_ack() will deref it. |
| 734 | */ |
| 735 | skb_get(skb); |
| 736 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); |
| 737 | t4_set_arp_err_handler(skb, NULL, arp_failure_discard); |
| 738 | BUG_ON(ep->mpa_skb); |
| 739 | ep->mpa_skb = skb; |
| 740 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); |
| 741 | } |
| 742 | |
| 743 | static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen) |
| 744 | { |
| 745 | int mpalen, wrlen; |
| 746 | struct fw_ofld_tx_data_wr *req; |
| 747 | struct mpa_message *mpa; |
| 748 | struct sk_buff *skb; |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 749 | struct mpa_v2_conn_params mpa_v2_params; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 750 | |
| 751 | PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen); |
| 752 | |
| 753 | mpalen = sizeof(*mpa) + plen; |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 754 | if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) |
| 755 | mpalen += sizeof(struct mpa_v2_conn_params); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 756 | wrlen = roundup(mpalen + sizeof *req, 16); |
| 757 | |
| 758 | skb = get_skb(NULL, wrlen, GFP_KERNEL); |
| 759 | if (!skb) { |
| 760 | printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__); |
| 761 | return -ENOMEM; |
| 762 | } |
| 763 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); |
| 764 | |
| 765 | req = (struct fw_ofld_tx_data_wr *) skb_put(skb, wrlen); |
| 766 | memset(req, 0, wrlen); |
| 767 | req->op_to_immdlen = cpu_to_be32( |
| 768 | FW_WR_OP(FW_OFLD_TX_DATA_WR) | |
| 769 | FW_WR_COMPL(1) | |
| 770 | FW_WR_IMMDLEN(mpalen)); |
| 771 | req->flowid_len16 = cpu_to_be32( |
| 772 | FW_WR_FLOWID(ep->hwtid) | |
| 773 | FW_WR_LEN16(wrlen >> 4)); |
| 774 | req->plen = cpu_to_be32(mpalen); |
| 775 | req->tunnel_to_proxy = cpu_to_be32( |
| 776 | FW_OFLD_TX_DATA_WR_FLUSH(1) | |
| 777 | FW_OFLD_TX_DATA_WR_SHOVE(1)); |
| 778 | |
| 779 | mpa = (struct mpa_message *)(req + 1); |
| 780 | memset(mpa, 0, sizeof(*mpa)); |
| 781 | memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); |
| 782 | mpa->flags = (ep->mpa_attr.crc_enabled ? MPA_CRC : 0) | |
| 783 | (markers_enabled ? MPA_MARKERS : 0); |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 784 | mpa->revision = ep->mpa_attr.version; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 785 | mpa->private_data_size = htons(plen); |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 786 | |
| 787 | if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { |
| 788 | mpa->flags |= MPA_ENHANCED_RDMA_CONN; |
Roland Dreier | f747c34 | 2012-07-05 14:16:54 -0700 | [diff] [blame] | 789 | mpa->private_data_size = htons(ntohs(mpa->private_data_size) + |
| 790 | sizeof (struct mpa_v2_conn_params)); |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 791 | mpa_v2_params.ird = htons((u16)ep->ird); |
| 792 | mpa_v2_params.ord = htons((u16)ep->ord); |
| 793 | if (peer2peer && (ep->mpa_attr.p2p_type != |
| 794 | FW_RI_INIT_P2PTYPE_DISABLED)) { |
| 795 | mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); |
| 796 | |
| 797 | if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) |
| 798 | mpa_v2_params.ord |= |
| 799 | htons(MPA_V2_RDMA_WRITE_RTR); |
| 800 | else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) |
| 801 | mpa_v2_params.ord |= |
| 802 | htons(MPA_V2_RDMA_READ_RTR); |
| 803 | } |
| 804 | |
| 805 | memcpy(mpa->private_data, &mpa_v2_params, |
| 806 | sizeof(struct mpa_v2_conn_params)); |
| 807 | |
| 808 | if (ep->plen) |
| 809 | memcpy(mpa->private_data + |
| 810 | sizeof(struct mpa_v2_conn_params), pdata, plen); |
| 811 | } else |
| 812 | if (plen) |
| 813 | memcpy(mpa->private_data, pdata, plen); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 814 | |
| 815 | /* |
| 816 | * Reference the mpa skb. This ensures the data area |
| 817 | * will remain in memory until the hw acks the tx. |
| 818 | * Function fw4_ack() will deref it. |
| 819 | */ |
| 820 | skb_get(skb); |
| 821 | t4_set_arp_err_handler(skb, NULL, arp_failure_discard); |
| 822 | ep->mpa_skb = skb; |
| 823 | state_set(&ep->com, MPA_REP_SENT); |
| 824 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); |
| 825 | } |
| 826 | |
| 827 | static int act_establish(struct c4iw_dev *dev, struct sk_buff *skb) |
| 828 | { |
| 829 | struct c4iw_ep *ep; |
| 830 | struct cpl_act_establish *req = cplhdr(skb); |
| 831 | unsigned int tid = GET_TID(req); |
| 832 | unsigned int atid = GET_TID_TID(ntohl(req->tos_atid)); |
| 833 | struct tid_info *t = dev->rdev.lldi.tids; |
| 834 | |
| 835 | ep = lookup_atid(t, atid); |
| 836 | |
| 837 | PDBG("%s ep %p tid %u snd_isn %u rcv_isn %u\n", __func__, ep, tid, |
| 838 | be32_to_cpu(req->snd_isn), be32_to_cpu(req->rcv_isn)); |
| 839 | |
| 840 | dst_confirm(ep->dst); |
| 841 | |
| 842 | /* setup the hwtid for this connection */ |
| 843 | ep->hwtid = tid; |
| 844 | cxgb4_insert_tid(t, ep, tid); |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 845 | insert_handle(dev, &dev->hwtid_idr, ep, ep->hwtid); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 846 | |
| 847 | ep->snd_seq = be32_to_cpu(req->snd_isn); |
| 848 | ep->rcv_seq = be32_to_cpu(req->rcv_isn); |
| 849 | |
| 850 | set_emss(ep, ntohs(req->tcp_opt)); |
| 851 | |
| 852 | /* dealloc the atid */ |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 853 | remove_handle(ep->com.dev, &ep->com.dev->atid_idr, atid); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 854 | cxgb4_free_atid(t, atid); |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 855 | set_bit(ACT_ESTAB, &ep->com.history); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 856 | |
| 857 | /* start MPA negotiation */ |
| 858 | send_flowc(ep, NULL); |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 859 | if (ep->retry_with_mpa_v1) |
| 860 | send_mpa_req(ep, skb, 1); |
| 861 | else |
| 862 | send_mpa_req(ep, skb, mpa_rev); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 863 | |
| 864 | return 0; |
| 865 | } |
| 866 | |
| 867 | static void close_complete_upcall(struct c4iw_ep *ep) |
| 868 | { |
| 869 | struct iw_cm_event event; |
| 870 | |
| 871 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
| 872 | memset(&event, 0, sizeof(event)); |
| 873 | event.event = IW_CM_EVENT_CLOSE; |
| 874 | if (ep->com.cm_id) { |
| 875 | PDBG("close complete delivered ep %p cm_id %p tid %u\n", |
| 876 | ep, ep->com.cm_id, ep->hwtid); |
| 877 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); |
| 878 | ep->com.cm_id->rem_ref(ep->com.cm_id); |
| 879 | ep->com.cm_id = NULL; |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 880 | set_bit(CLOSE_UPCALL, &ep->com.history); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 881 | } |
| 882 | } |
| 883 | |
| 884 | static int abort_connection(struct c4iw_ep *ep, struct sk_buff *skb, gfp_t gfp) |
| 885 | { |
| 886 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
| 887 | close_complete_upcall(ep); |
| 888 | state_set(&ep->com, ABORTING); |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 889 | set_bit(ABORT_CONN, &ep->com.history); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 890 | return send_abort(ep, skb, gfp); |
| 891 | } |
| 892 | |
| 893 | static void peer_close_upcall(struct c4iw_ep *ep) |
| 894 | { |
| 895 | struct iw_cm_event event; |
| 896 | |
| 897 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
| 898 | memset(&event, 0, sizeof(event)); |
| 899 | event.event = IW_CM_EVENT_DISCONNECT; |
| 900 | if (ep->com.cm_id) { |
| 901 | PDBG("peer close delivered ep %p cm_id %p tid %u\n", |
| 902 | ep, ep->com.cm_id, ep->hwtid); |
| 903 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 904 | set_bit(DISCONN_UPCALL, &ep->com.history); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 905 | } |
| 906 | } |
| 907 | |
| 908 | static void peer_abort_upcall(struct c4iw_ep *ep) |
| 909 | { |
| 910 | struct iw_cm_event event; |
| 911 | |
| 912 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
| 913 | memset(&event, 0, sizeof(event)); |
| 914 | event.event = IW_CM_EVENT_CLOSE; |
| 915 | event.status = -ECONNRESET; |
| 916 | if (ep->com.cm_id) { |
| 917 | PDBG("abort delivered ep %p cm_id %p tid %u\n", ep, |
| 918 | ep->com.cm_id, ep->hwtid); |
| 919 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); |
| 920 | ep->com.cm_id->rem_ref(ep->com.cm_id); |
| 921 | ep->com.cm_id = NULL; |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 922 | set_bit(ABORT_UPCALL, &ep->com.history); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 923 | } |
| 924 | } |
| 925 | |
| 926 | static void connect_reply_upcall(struct c4iw_ep *ep, int status) |
| 927 | { |
| 928 | struct iw_cm_event event; |
| 929 | |
| 930 | PDBG("%s ep %p tid %u status %d\n", __func__, ep, ep->hwtid, status); |
| 931 | memset(&event, 0, sizeof(event)); |
| 932 | event.event = IW_CM_EVENT_CONNECT_REPLY; |
| 933 | event.status = status; |
| 934 | event.local_addr = ep->com.local_addr; |
| 935 | event.remote_addr = ep->com.remote_addr; |
| 936 | |
| 937 | if ((status == 0) || (status == -ECONNREFUSED)) { |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 938 | if (!ep->tried_with_mpa_v1) { |
| 939 | /* this means MPA_v2 is used */ |
| 940 | event.private_data_len = ep->plen - |
| 941 | sizeof(struct mpa_v2_conn_params); |
| 942 | event.private_data = ep->mpa_pkt + |
| 943 | sizeof(struct mpa_message) + |
| 944 | sizeof(struct mpa_v2_conn_params); |
| 945 | } else { |
| 946 | /* this means MPA_v1 is used */ |
| 947 | event.private_data_len = ep->plen; |
| 948 | event.private_data = ep->mpa_pkt + |
| 949 | sizeof(struct mpa_message); |
| 950 | } |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 951 | } |
Roland Dreier | 85963e4 | 2010-07-19 13:13:09 -0700 | [diff] [blame] | 952 | |
| 953 | PDBG("%s ep %p tid %u status %d\n", __func__, ep, |
| 954 | ep->hwtid, status); |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 955 | set_bit(CONN_RPL_UPCALL, &ep->com.history); |
Roland Dreier | 85963e4 | 2010-07-19 13:13:09 -0700 | [diff] [blame] | 956 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); |
| 957 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 958 | if (status < 0) { |
| 959 | ep->com.cm_id->rem_ref(ep->com.cm_id); |
| 960 | ep->com.cm_id = NULL; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 961 | } |
| 962 | } |
| 963 | |
| 964 | static void connect_request_upcall(struct c4iw_ep *ep) |
| 965 | { |
| 966 | struct iw_cm_event event; |
| 967 | |
| 968 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
| 969 | memset(&event, 0, sizeof(event)); |
| 970 | event.event = IW_CM_EVENT_CONNECT_REQUEST; |
| 971 | event.local_addr = ep->com.local_addr; |
| 972 | event.remote_addr = ep->com.remote_addr; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 973 | event.provider_data = ep; |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 974 | if (!ep->tried_with_mpa_v1) { |
| 975 | /* this means MPA_v2 is used */ |
| 976 | event.ord = ep->ord; |
| 977 | event.ird = ep->ird; |
| 978 | event.private_data_len = ep->plen - |
| 979 | sizeof(struct mpa_v2_conn_params); |
| 980 | event.private_data = ep->mpa_pkt + sizeof(struct mpa_message) + |
| 981 | sizeof(struct mpa_v2_conn_params); |
| 982 | } else { |
| 983 | /* this means MPA_v1 is used. Send max supported */ |
| 984 | event.ord = c4iw_max_read_depth; |
| 985 | event.ird = c4iw_max_read_depth; |
| 986 | event.private_data_len = ep->plen; |
| 987 | event.private_data = ep->mpa_pkt + sizeof(struct mpa_message); |
| 988 | } |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 989 | if (state_read(&ep->parent_ep->com) != DEAD) { |
| 990 | c4iw_get_ep(&ep->com); |
| 991 | ep->parent_ep->com.cm_id->event_handler( |
| 992 | ep->parent_ep->com.cm_id, |
| 993 | &event); |
| 994 | } |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 995 | set_bit(CONNREQ_UPCALL, &ep->com.history); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 996 | c4iw_put_ep(&ep->parent_ep->com); |
| 997 | ep->parent_ep = NULL; |
| 998 | } |
| 999 | |
| 1000 | static void established_upcall(struct c4iw_ep *ep) |
| 1001 | { |
| 1002 | struct iw_cm_event event; |
| 1003 | |
| 1004 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
| 1005 | memset(&event, 0, sizeof(event)); |
| 1006 | event.event = IW_CM_EVENT_ESTABLISHED; |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 1007 | event.ird = ep->ird; |
| 1008 | event.ord = ep->ord; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1009 | if (ep->com.cm_id) { |
| 1010 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
| 1011 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 1012 | set_bit(ESTAB_UPCALL, &ep->com.history); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1013 | } |
| 1014 | } |
| 1015 | |
| 1016 | static int update_rx_credits(struct c4iw_ep *ep, u32 credits) |
| 1017 | { |
| 1018 | struct cpl_rx_data_ack *req; |
| 1019 | struct sk_buff *skb; |
| 1020 | int wrlen = roundup(sizeof *req, 16); |
| 1021 | |
| 1022 | PDBG("%s ep %p tid %u credits %u\n", __func__, ep, ep->hwtid, credits); |
| 1023 | skb = get_skb(NULL, wrlen, GFP_KERNEL); |
| 1024 | if (!skb) { |
| 1025 | printk(KERN_ERR MOD "update_rx_credits - cannot alloc skb!\n"); |
| 1026 | return 0; |
| 1027 | } |
| 1028 | |
| 1029 | req = (struct cpl_rx_data_ack *) skb_put(skb, wrlen); |
| 1030 | memset(req, 0, wrlen); |
| 1031 | INIT_TP_WR(req, ep->hwtid); |
| 1032 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_RX_DATA_ACK, |
| 1033 | ep->hwtid)); |
Steve Wise | ba6d392 | 2010-06-23 15:46:49 +0000 | [diff] [blame] | 1034 | req->credit_dack = cpu_to_be32(credits | RX_FORCE_ACK(1) | |
| 1035 | F_RX_DACK_CHANGE | |
| 1036 | V_RX_DACK_MODE(dack_mode)); |
Steve Wise | d4f1a5c | 2010-07-23 19:12:32 +0000 | [diff] [blame] | 1037 | set_wr_txq(skb, CPL_PRIORITY_ACK, ep->ctrlq_idx); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1038 | c4iw_ofld_send(&ep->com.dev->rdev, skb); |
| 1039 | return credits; |
| 1040 | } |
| 1041 | |
| 1042 | static void process_mpa_reply(struct c4iw_ep *ep, struct sk_buff *skb) |
| 1043 | { |
| 1044 | struct mpa_message *mpa; |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 1045 | struct mpa_v2_conn_params *mpa_v2_params; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1046 | u16 plen; |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 1047 | u16 resp_ird, resp_ord; |
| 1048 | u8 rtr_mismatch = 0, insuff_ird = 0; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1049 | struct c4iw_qp_attributes attrs; |
| 1050 | enum c4iw_qp_attr_mask mask; |
| 1051 | int err; |
| 1052 | |
| 1053 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
| 1054 | |
| 1055 | /* |
| 1056 | * Stop mpa timer. If it expired, then the state has |
| 1057 | * changed and we bail since ep_timeout already aborted |
| 1058 | * the connection. |
| 1059 | */ |
| 1060 | stop_ep_timer(ep); |
| 1061 | if (state_read(&ep->com) != MPA_REQ_SENT) |
| 1062 | return; |
| 1063 | |
| 1064 | /* |
| 1065 | * If we get more than the supported amount of private data |
| 1066 | * then we must fail this connection. |
| 1067 | */ |
| 1068 | if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) { |
| 1069 | err = -EINVAL; |
| 1070 | goto err; |
| 1071 | } |
| 1072 | |
| 1073 | /* |
| 1074 | * copy the new data into our accumulation buffer. |
| 1075 | */ |
| 1076 | skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]), |
| 1077 | skb->len); |
| 1078 | ep->mpa_pkt_len += skb->len; |
| 1079 | |
| 1080 | /* |
| 1081 | * if we don't even have the mpa message, then bail. |
| 1082 | */ |
| 1083 | if (ep->mpa_pkt_len < sizeof(*mpa)) |
| 1084 | return; |
| 1085 | mpa = (struct mpa_message *) ep->mpa_pkt; |
| 1086 | |
| 1087 | /* Validate MPA header. */ |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 1088 | if (mpa->revision > mpa_rev) { |
| 1089 | printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d," |
| 1090 | " Received = %d\n", __func__, mpa_rev, mpa->revision); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1091 | err = -EPROTO; |
| 1092 | goto err; |
| 1093 | } |
| 1094 | if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) { |
| 1095 | err = -EPROTO; |
| 1096 | goto err; |
| 1097 | } |
| 1098 | |
| 1099 | plen = ntohs(mpa->private_data_size); |
| 1100 | |
| 1101 | /* |
| 1102 | * Fail if there's too much private data. |
| 1103 | */ |
| 1104 | if (plen > MPA_MAX_PRIVATE_DATA) { |
| 1105 | err = -EPROTO; |
| 1106 | goto err; |
| 1107 | } |
| 1108 | |
| 1109 | /* |
| 1110 | * If plen does not account for pkt size |
| 1111 | */ |
| 1112 | if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { |
| 1113 | err = -EPROTO; |
| 1114 | goto err; |
| 1115 | } |
| 1116 | |
| 1117 | ep->plen = (u8) plen; |
| 1118 | |
| 1119 | /* |
| 1120 | * If we don't have all the pdata yet, then bail. |
| 1121 | * We'll continue process when more data arrives. |
| 1122 | */ |
| 1123 | if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) |
| 1124 | return; |
| 1125 | |
| 1126 | if (mpa->flags & MPA_REJECT) { |
| 1127 | err = -ECONNREFUSED; |
| 1128 | goto err; |
| 1129 | } |
| 1130 | |
| 1131 | /* |
| 1132 | * If we get here we have accumulated the entire mpa |
| 1133 | * start reply message including private data. And |
| 1134 | * the MPA header is valid. |
| 1135 | */ |
| 1136 | state_set(&ep->com, FPDU_MODE); |
| 1137 | ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; |
| 1138 | ep->mpa_attr.recv_marker_enabled = markers_enabled; |
| 1139 | ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 1140 | ep->mpa_attr.version = mpa->revision; |
| 1141 | ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; |
| 1142 | |
| 1143 | if (mpa->revision == 2) { |
| 1144 | ep->mpa_attr.enhanced_rdma_conn = |
| 1145 | mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; |
| 1146 | if (ep->mpa_attr.enhanced_rdma_conn) { |
| 1147 | mpa_v2_params = (struct mpa_v2_conn_params *) |
| 1148 | (ep->mpa_pkt + sizeof(*mpa)); |
| 1149 | resp_ird = ntohs(mpa_v2_params->ird) & |
| 1150 | MPA_V2_IRD_ORD_MASK; |
| 1151 | resp_ord = ntohs(mpa_v2_params->ord) & |
| 1152 | MPA_V2_IRD_ORD_MASK; |
| 1153 | |
| 1154 | /* |
| 1155 | * This is a double-check. Ideally, below checks are |
| 1156 | * not required since ird/ord stuff has been taken |
| 1157 | * care of in c4iw_accept_cr |
| 1158 | */ |
| 1159 | if ((ep->ird < resp_ord) || (ep->ord > resp_ird)) { |
| 1160 | err = -ENOMEM; |
| 1161 | ep->ird = resp_ord; |
| 1162 | ep->ord = resp_ird; |
| 1163 | insuff_ird = 1; |
| 1164 | } |
| 1165 | |
| 1166 | if (ntohs(mpa_v2_params->ird) & |
| 1167 | MPA_V2_PEER2PEER_MODEL) { |
| 1168 | if (ntohs(mpa_v2_params->ord) & |
| 1169 | MPA_V2_RDMA_WRITE_RTR) |
| 1170 | ep->mpa_attr.p2p_type = |
| 1171 | FW_RI_INIT_P2PTYPE_RDMA_WRITE; |
| 1172 | else if (ntohs(mpa_v2_params->ord) & |
| 1173 | MPA_V2_RDMA_READ_RTR) |
| 1174 | ep->mpa_attr.p2p_type = |
| 1175 | FW_RI_INIT_P2PTYPE_READ_REQ; |
| 1176 | } |
| 1177 | } |
| 1178 | } else if (mpa->revision == 1) |
| 1179 | if (peer2peer) |
| 1180 | ep->mpa_attr.p2p_type = p2p_type; |
| 1181 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1182 | PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, " |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 1183 | "xmit_marker_enabled=%d, version=%d p2p_type=%d local-p2p_type = " |
| 1184 | "%d\n", __func__, ep->mpa_attr.crc_enabled, |
| 1185 | ep->mpa_attr.recv_marker_enabled, |
| 1186 | ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version, |
| 1187 | ep->mpa_attr.p2p_type, p2p_type); |
| 1188 | |
| 1189 | /* |
| 1190 | * If responder's RTR does not match with that of initiator, assign |
| 1191 | * FW_RI_INIT_P2PTYPE_DISABLED in mpa attributes so that RTR is not |
| 1192 | * generated when moving QP to RTS state. |
| 1193 | * A TERM message will be sent after QP has moved to RTS state |
| 1194 | */ |
Kumar Sanghvi | 91018f8 | 2012-02-25 17:45:02 -0800 | [diff] [blame] | 1195 | if ((ep->mpa_attr.version == 2) && peer2peer && |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 1196 | (ep->mpa_attr.p2p_type != p2p_type)) { |
| 1197 | ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; |
| 1198 | rtr_mismatch = 1; |
| 1199 | } |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1200 | |
| 1201 | attrs.mpa_attr = ep->mpa_attr; |
| 1202 | attrs.max_ird = ep->ird; |
| 1203 | attrs.max_ord = ep->ord; |
| 1204 | attrs.llp_stream_handle = ep; |
| 1205 | attrs.next_state = C4IW_QP_STATE_RTS; |
| 1206 | |
| 1207 | mask = C4IW_QP_ATTR_NEXT_STATE | |
| 1208 | C4IW_QP_ATTR_LLP_STREAM_HANDLE | C4IW_QP_ATTR_MPA_ATTR | |
| 1209 | C4IW_QP_ATTR_MAX_IRD | C4IW_QP_ATTR_MAX_ORD; |
| 1210 | |
| 1211 | /* bind QP and TID with INIT_WR */ |
| 1212 | err = c4iw_modify_qp(ep->com.qp->rhp, |
| 1213 | ep->com.qp, mask, &attrs, 1); |
| 1214 | if (err) |
| 1215 | goto err; |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 1216 | |
| 1217 | /* |
| 1218 | * If responder's RTR requirement did not match with what initiator |
| 1219 | * supports, generate TERM message |
| 1220 | */ |
| 1221 | if (rtr_mismatch) { |
| 1222 | printk(KERN_ERR "%s: RTR mismatch, sending TERM\n", __func__); |
| 1223 | attrs.layer_etype = LAYER_MPA | DDP_LLP; |
| 1224 | attrs.ecode = MPA_NOMATCH_RTR; |
| 1225 | attrs.next_state = C4IW_QP_STATE_TERMINATE; |
| 1226 | err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, |
| 1227 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 0); |
| 1228 | err = -ENOMEM; |
| 1229 | goto out; |
| 1230 | } |
| 1231 | |
| 1232 | /* |
| 1233 | * Generate TERM if initiator IRD is not sufficient for responder |
| 1234 | * provided ORD. Currently, we do the same behaviour even when |
| 1235 | * responder provided IRD is also not sufficient as regards to |
| 1236 | * initiator ORD. |
| 1237 | */ |
| 1238 | if (insuff_ird) { |
| 1239 | printk(KERN_ERR "%s: Insufficient IRD, sending TERM\n", |
| 1240 | __func__); |
| 1241 | attrs.layer_etype = LAYER_MPA | DDP_LLP; |
| 1242 | attrs.ecode = MPA_INSUFF_IRD; |
| 1243 | attrs.next_state = C4IW_QP_STATE_TERMINATE; |
| 1244 | err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, |
| 1245 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 0); |
| 1246 | err = -ENOMEM; |
| 1247 | goto out; |
| 1248 | } |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1249 | goto out; |
| 1250 | err: |
Steve Wise | b21ef16 | 2010-06-10 19:02:55 +0000 | [diff] [blame] | 1251 | state_set(&ep->com, ABORTING); |
| 1252 | send_abort(ep, skb, GFP_KERNEL); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1253 | out: |
| 1254 | connect_reply_upcall(ep, err); |
| 1255 | return; |
| 1256 | } |
| 1257 | |
| 1258 | static void process_mpa_request(struct c4iw_ep *ep, struct sk_buff *skb) |
| 1259 | { |
| 1260 | struct mpa_message *mpa; |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 1261 | struct mpa_v2_conn_params *mpa_v2_params; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1262 | u16 plen; |
| 1263 | |
| 1264 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
| 1265 | |
| 1266 | if (state_read(&ep->com) != MPA_REQ_WAIT) |
| 1267 | return; |
| 1268 | |
| 1269 | /* |
| 1270 | * If we get more than the supported amount of private data |
| 1271 | * then we must fail this connection. |
| 1272 | */ |
| 1273 | if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) { |
| 1274 | stop_ep_timer(ep); |
| 1275 | abort_connection(ep, skb, GFP_KERNEL); |
| 1276 | return; |
| 1277 | } |
| 1278 | |
| 1279 | PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__); |
| 1280 | |
| 1281 | /* |
| 1282 | * Copy the new data into our accumulation buffer. |
| 1283 | */ |
| 1284 | skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]), |
| 1285 | skb->len); |
| 1286 | ep->mpa_pkt_len += skb->len; |
| 1287 | |
| 1288 | /* |
| 1289 | * If we don't even have the mpa message, then bail. |
| 1290 | * We'll continue process when more data arrives. |
| 1291 | */ |
| 1292 | if (ep->mpa_pkt_len < sizeof(*mpa)) |
| 1293 | return; |
| 1294 | |
| 1295 | PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__); |
| 1296 | stop_ep_timer(ep); |
| 1297 | mpa = (struct mpa_message *) ep->mpa_pkt; |
| 1298 | |
| 1299 | /* |
| 1300 | * Validate MPA Header. |
| 1301 | */ |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 1302 | if (mpa->revision > mpa_rev) { |
| 1303 | printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d," |
| 1304 | " Received = %d\n", __func__, mpa_rev, mpa->revision); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1305 | abort_connection(ep, skb, GFP_KERNEL); |
| 1306 | return; |
| 1307 | } |
| 1308 | |
| 1309 | if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key))) { |
| 1310 | abort_connection(ep, skb, GFP_KERNEL); |
| 1311 | return; |
| 1312 | } |
| 1313 | |
| 1314 | plen = ntohs(mpa->private_data_size); |
| 1315 | |
| 1316 | /* |
| 1317 | * Fail if there's too much private data. |
| 1318 | */ |
| 1319 | if (plen > MPA_MAX_PRIVATE_DATA) { |
| 1320 | abort_connection(ep, skb, GFP_KERNEL); |
| 1321 | return; |
| 1322 | } |
| 1323 | |
| 1324 | /* |
| 1325 | * If plen does not account for pkt size |
| 1326 | */ |
| 1327 | if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { |
| 1328 | abort_connection(ep, skb, GFP_KERNEL); |
| 1329 | return; |
| 1330 | } |
| 1331 | ep->plen = (u8) plen; |
| 1332 | |
| 1333 | /* |
| 1334 | * If we don't have all the pdata yet, then bail. |
| 1335 | */ |
| 1336 | if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) |
| 1337 | return; |
| 1338 | |
| 1339 | /* |
| 1340 | * If we get here we have accumulated the entire mpa |
| 1341 | * start reply message including private data. |
| 1342 | */ |
| 1343 | ep->mpa_attr.initiator = 0; |
| 1344 | ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; |
| 1345 | ep->mpa_attr.recv_marker_enabled = markers_enabled; |
| 1346 | ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 1347 | ep->mpa_attr.version = mpa->revision; |
| 1348 | if (mpa->revision == 1) |
| 1349 | ep->tried_with_mpa_v1 = 1; |
| 1350 | ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; |
| 1351 | |
| 1352 | if (mpa->revision == 2) { |
| 1353 | ep->mpa_attr.enhanced_rdma_conn = |
| 1354 | mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; |
| 1355 | if (ep->mpa_attr.enhanced_rdma_conn) { |
| 1356 | mpa_v2_params = (struct mpa_v2_conn_params *) |
| 1357 | (ep->mpa_pkt + sizeof(*mpa)); |
| 1358 | ep->ird = ntohs(mpa_v2_params->ird) & |
| 1359 | MPA_V2_IRD_ORD_MASK; |
| 1360 | ep->ord = ntohs(mpa_v2_params->ord) & |
| 1361 | MPA_V2_IRD_ORD_MASK; |
| 1362 | if (ntohs(mpa_v2_params->ird) & MPA_V2_PEER2PEER_MODEL) |
| 1363 | if (peer2peer) { |
| 1364 | if (ntohs(mpa_v2_params->ord) & |
| 1365 | MPA_V2_RDMA_WRITE_RTR) |
| 1366 | ep->mpa_attr.p2p_type = |
| 1367 | FW_RI_INIT_P2PTYPE_RDMA_WRITE; |
| 1368 | else if (ntohs(mpa_v2_params->ord) & |
| 1369 | MPA_V2_RDMA_READ_RTR) |
| 1370 | ep->mpa_attr.p2p_type = |
| 1371 | FW_RI_INIT_P2PTYPE_READ_REQ; |
| 1372 | } |
| 1373 | } |
| 1374 | } else if (mpa->revision == 1) |
| 1375 | if (peer2peer) |
| 1376 | ep->mpa_attr.p2p_type = p2p_type; |
| 1377 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1378 | PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, " |
| 1379 | "xmit_marker_enabled=%d, version=%d p2p_type=%d\n", __func__, |
| 1380 | ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, |
| 1381 | ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version, |
| 1382 | ep->mpa_attr.p2p_type); |
| 1383 | |
| 1384 | state_set(&ep->com, MPA_REQ_RCVD); |
| 1385 | |
| 1386 | /* drive upcall */ |
| 1387 | connect_request_upcall(ep); |
| 1388 | return; |
| 1389 | } |
| 1390 | |
| 1391 | static int rx_data(struct c4iw_dev *dev, struct sk_buff *skb) |
| 1392 | { |
| 1393 | struct c4iw_ep *ep; |
| 1394 | struct cpl_rx_data *hdr = cplhdr(skb); |
| 1395 | unsigned int dlen = ntohs(hdr->len); |
| 1396 | unsigned int tid = GET_TID(hdr); |
| 1397 | struct tid_info *t = dev->rdev.lldi.tids; |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 1398 | __u8 status = hdr->status; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1399 | |
| 1400 | ep = lookup_tid(t, tid); |
| 1401 | PDBG("%s ep %p tid %u dlen %u\n", __func__, ep, ep->hwtid, dlen); |
| 1402 | skb_pull(skb, sizeof(*hdr)); |
| 1403 | skb_trim(skb, dlen); |
| 1404 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1405 | /* update RX credits */ |
| 1406 | update_rx_credits(ep, dlen); |
| 1407 | |
| 1408 | switch (state_read(&ep->com)) { |
| 1409 | case MPA_REQ_SENT: |
Vipul Pandya | 55abf8d | 2013-01-07 13:11:50 +0000 | [diff] [blame] | 1410 | ep->rcv_seq += dlen; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1411 | process_mpa_reply(ep, skb); |
| 1412 | break; |
| 1413 | case MPA_REQ_WAIT: |
Vipul Pandya | 55abf8d | 2013-01-07 13:11:50 +0000 | [diff] [blame] | 1414 | ep->rcv_seq += dlen; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1415 | process_mpa_request(ep, skb); |
| 1416 | break; |
Vipul Pandya | 1557967 | 2013-01-07 13:11:52 +0000 | [diff] [blame] | 1417 | case FPDU_MODE: { |
| 1418 | struct c4iw_qp_attributes attrs; |
| 1419 | BUG_ON(!ep->com.qp); |
Vipul Pandya | e8e5b92 | 2013-01-07 13:11:55 +0000 | [diff] [blame^] | 1420 | if (status) |
Vipul Pandya | 1557967 | 2013-01-07 13:11:52 +0000 | [diff] [blame] | 1421 | pr_err("%s Unexpected streaming data." \ |
Vipul Pandya | 04236df | 2013-01-07 13:11:54 +0000 | [diff] [blame] | 1422 | " qpid %u ep %p state %d tid %u status %d\n", |
| 1423 | __func__, ep->com.qp->wq.sq.qid, ep, |
| 1424 | state_read(&ep->com), ep->hwtid, status); |
Vipul Pandya | 1557967 | 2013-01-07 13:11:52 +0000 | [diff] [blame] | 1425 | attrs.next_state = C4IW_QP_STATE_ERROR; |
| 1426 | c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, |
| 1427 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); |
Vipul Pandya | 55abf8d | 2013-01-07 13:11:50 +0000 | [diff] [blame] | 1428 | c4iw_ep_disconnect(ep, 1, GFP_KERNEL); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1429 | break; |
| 1430 | } |
Vipul Pandya | 1557967 | 2013-01-07 13:11:52 +0000 | [diff] [blame] | 1431 | default: |
| 1432 | break; |
| 1433 | } |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1434 | return 0; |
| 1435 | } |
| 1436 | |
| 1437 | static int abort_rpl(struct c4iw_dev *dev, struct sk_buff *skb) |
| 1438 | { |
| 1439 | struct c4iw_ep *ep; |
| 1440 | struct cpl_abort_rpl_rss *rpl = cplhdr(skb); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1441 | int release = 0; |
| 1442 | unsigned int tid = GET_TID(rpl); |
| 1443 | struct tid_info *t = dev->rdev.lldi.tids; |
| 1444 | |
| 1445 | ep = lookup_tid(t, tid); |
Vipul Pandya | 4984037 | 2012-05-18 15:29:29 +0530 | [diff] [blame] | 1446 | if (!ep) { |
| 1447 | printk(KERN_WARNING MOD "Abort rpl to freed endpoint\n"); |
| 1448 | return 0; |
| 1449 | } |
Wei Yongjun | 92dd6c3 | 2012-09-07 06:51:23 +0000 | [diff] [blame] | 1450 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
Steve Wise | 2f5b48c | 2010-09-10 11:15:36 -0500 | [diff] [blame] | 1451 | mutex_lock(&ep->com.mutex); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1452 | switch (ep->com.state) { |
| 1453 | case ABORTING: |
Vipul Pandya | 91e9c071 | 2013-01-07 13:11:51 +0000 | [diff] [blame] | 1454 | c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1455 | __state_set(&ep->com, DEAD); |
| 1456 | release = 1; |
| 1457 | break; |
| 1458 | default: |
| 1459 | printk(KERN_ERR "%s ep %p state %d\n", |
| 1460 | __func__, ep, ep->com.state); |
| 1461 | break; |
| 1462 | } |
Steve Wise | 2f5b48c | 2010-09-10 11:15:36 -0500 | [diff] [blame] | 1463 | mutex_unlock(&ep->com.mutex); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1464 | |
| 1465 | if (release) |
| 1466 | release_ep_resources(ep); |
| 1467 | return 0; |
| 1468 | } |
| 1469 | |
Vipul Pandya | 5be78ee | 2012-12-10 09:30:54 +0000 | [diff] [blame] | 1470 | static void send_fw_act_open_req(struct c4iw_ep *ep, unsigned int atid) |
| 1471 | { |
| 1472 | struct sk_buff *skb; |
| 1473 | struct fw_ofld_connection_wr *req; |
| 1474 | unsigned int mtu_idx; |
| 1475 | int wscale; |
| 1476 | |
| 1477 | skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); |
| 1478 | req = (struct fw_ofld_connection_wr *)__skb_put(skb, sizeof(*req)); |
| 1479 | memset(req, 0, sizeof(*req)); |
| 1480 | req->op_compl = htonl(V_WR_OP(FW_OFLD_CONNECTION_WR)); |
| 1481 | req->len16_pkd = htonl(FW_WR_LEN16(DIV_ROUND_UP(sizeof(*req), 16))); |
| 1482 | req->le.filter = cpu_to_be32(select_ntuple(ep->com.dev, ep->dst, |
| 1483 | ep->l2t)); |
| 1484 | req->le.lport = ep->com.local_addr.sin_port; |
| 1485 | req->le.pport = ep->com.remote_addr.sin_port; |
| 1486 | req->le.u.ipv4.lip = ep->com.local_addr.sin_addr.s_addr; |
| 1487 | req->le.u.ipv4.pip = ep->com.remote_addr.sin_addr.s_addr; |
| 1488 | req->tcb.t_state_to_astid = |
| 1489 | htonl(V_FW_OFLD_CONNECTION_WR_T_STATE(TCP_SYN_SENT) | |
| 1490 | V_FW_OFLD_CONNECTION_WR_ASTID(atid)); |
| 1491 | req->tcb.cplrxdataack_cplpassacceptrpl = |
| 1492 | htons(F_FW_OFLD_CONNECTION_WR_CPLRXDATAACK); |
| 1493 | req->tcb.tx_max = jiffies; |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 1494 | req->tcb.rcv_adv = htons(1); |
Vipul Pandya | 5be78ee | 2012-12-10 09:30:54 +0000 | [diff] [blame] | 1495 | cxgb4_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx); |
| 1496 | wscale = compute_wscale(rcv_win); |
| 1497 | req->tcb.opt0 = TCAM_BYPASS(1) | |
| 1498 | (nocong ? NO_CONG(1) : 0) | |
| 1499 | KEEP_ALIVE(1) | |
| 1500 | DELACK(1) | |
| 1501 | WND_SCALE(wscale) | |
| 1502 | MSS_IDX(mtu_idx) | |
| 1503 | L2T_IDX(ep->l2t->idx) | |
| 1504 | TX_CHAN(ep->tx_chan) | |
| 1505 | SMAC_SEL(ep->smac_idx) | |
| 1506 | DSCP(ep->tos) | |
| 1507 | ULP_MODE(ULP_MODE_TCPDDP) | |
| 1508 | RCV_BUFSIZ(rcv_win >> 10); |
| 1509 | req->tcb.opt2 = PACE(1) | |
| 1510 | TX_QUEUE(ep->com.dev->rdev.lldi.tx_modq[ep->tx_chan]) | |
| 1511 | RX_CHANNEL(0) | |
| 1512 | CCTRL_ECN(enable_ecn) | |
| 1513 | RSS_QUEUE_VALID | RSS_QUEUE(ep->rss_qid); |
| 1514 | if (enable_tcp_timestamps) |
| 1515 | req->tcb.opt2 |= TSTAMPS_EN(1); |
| 1516 | if (enable_tcp_sack) |
| 1517 | req->tcb.opt2 |= SACK_EN(1); |
| 1518 | if (wscale && enable_tcp_window_scaling) |
| 1519 | req->tcb.opt2 |= WND_SCALE_EN(1); |
| 1520 | req->tcb.opt0 = cpu_to_be64(req->tcb.opt0); |
| 1521 | req->tcb.opt2 = cpu_to_be32(req->tcb.opt2); |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 1522 | set_wr_txq(skb, CPL_PRIORITY_CONTROL, ep->ctrlq_idx); |
| 1523 | set_bit(ACT_OFLD_CONN, &ep->com.history); |
Vipul Pandya | 5be78ee | 2012-12-10 09:30:54 +0000 | [diff] [blame] | 1524 | c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); |
| 1525 | } |
| 1526 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1527 | /* |
| 1528 | * Return whether a failed active open has allocated a TID |
| 1529 | */ |
| 1530 | static inline int act_open_has_tid(int status) |
| 1531 | { |
| 1532 | return status != CPL_ERR_TCAM_FULL && status != CPL_ERR_CONN_EXIST && |
| 1533 | status != CPL_ERR_ARP_MISS; |
| 1534 | } |
| 1535 | |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 1536 | #define ACT_OPEN_RETRY_COUNT 2 |
| 1537 | |
| 1538 | static int c4iw_reconnect(struct c4iw_ep *ep) |
| 1539 | { |
| 1540 | int err = 0; |
| 1541 | struct rtable *rt; |
| 1542 | struct port_info *pi; |
| 1543 | struct net_device *pdev; |
| 1544 | int step; |
| 1545 | struct neighbour *neigh; |
| 1546 | |
| 1547 | PDBG("%s qp %p cm_id %p\n", __func__, ep->com.qp, ep->com.cm_id); |
| 1548 | init_timer(&ep->timer); |
| 1549 | |
| 1550 | /* |
| 1551 | * Allocate an active TID to initiate a TCP connection. |
| 1552 | */ |
| 1553 | ep->atid = cxgb4_alloc_atid(ep->com.dev->rdev.lldi.tids, ep); |
| 1554 | if (ep->atid == -1) { |
| 1555 | pr_err("%s - cannot alloc atid.\n", __func__); |
| 1556 | err = -ENOMEM; |
| 1557 | goto fail2; |
| 1558 | } |
| 1559 | insert_handle(ep->com.dev, &ep->com.dev->atid_idr, ep, ep->atid); |
| 1560 | |
| 1561 | /* find a route */ |
| 1562 | rt = find_route(ep->com.dev, |
| 1563 | ep->com.cm_id->local_addr.sin_addr.s_addr, |
| 1564 | ep->com.cm_id->remote_addr.sin_addr.s_addr, |
| 1565 | ep->com.cm_id->local_addr.sin_port, |
| 1566 | ep->com.cm_id->remote_addr.sin_port, 0); |
| 1567 | if (!rt) { |
| 1568 | pr_err("%s - cannot find route.\n", __func__); |
| 1569 | err = -EHOSTUNREACH; |
| 1570 | goto fail3; |
| 1571 | } |
| 1572 | ep->dst = &rt->dst; |
| 1573 | |
| 1574 | neigh = dst_neigh_lookup(ep->dst, |
| 1575 | &ep->com.cm_id->remote_addr.sin_addr.s_addr); |
| 1576 | /* get a l2t entry */ |
| 1577 | if (neigh->dev->flags & IFF_LOOPBACK) { |
| 1578 | PDBG("%s LOOPBACK\n", __func__); |
| 1579 | pdev = ip_dev_find(&init_net, |
| 1580 | ep->com.cm_id->remote_addr.sin_addr.s_addr); |
| 1581 | ep->l2t = cxgb4_l2t_get(ep->com.dev->rdev.lldi.l2t, |
| 1582 | neigh, pdev, 0); |
| 1583 | pi = (struct port_info *)netdev_priv(pdev); |
| 1584 | ep->mtu = pdev->mtu; |
| 1585 | ep->tx_chan = cxgb4_port_chan(pdev); |
| 1586 | ep->smac_idx = (cxgb4_port_viid(pdev) & 0x7F) << 1; |
| 1587 | dev_put(pdev); |
| 1588 | } else { |
| 1589 | ep->l2t = cxgb4_l2t_get(ep->com.dev->rdev.lldi.l2t, |
| 1590 | neigh, neigh->dev, 0); |
| 1591 | pi = (struct port_info *)netdev_priv(neigh->dev); |
| 1592 | ep->mtu = dst_mtu(ep->dst); |
| 1593 | ep->tx_chan = cxgb4_port_chan(neigh->dev); |
| 1594 | ep->smac_idx = (cxgb4_port_viid(neigh->dev) & |
| 1595 | 0x7F) << 1; |
| 1596 | } |
| 1597 | |
| 1598 | step = ep->com.dev->rdev.lldi.ntxq / ep->com.dev->rdev.lldi.nchan; |
| 1599 | ep->txq_idx = pi->port_id * step; |
| 1600 | ep->ctrlq_idx = pi->port_id; |
| 1601 | step = ep->com.dev->rdev.lldi.nrxq / ep->com.dev->rdev.lldi.nchan; |
| 1602 | ep->rss_qid = ep->com.dev->rdev.lldi.rxq_ids[pi->port_id * step]; |
| 1603 | |
| 1604 | if (!ep->l2t) { |
| 1605 | pr_err("%s - cannot alloc l2e.\n", __func__); |
| 1606 | err = -ENOMEM; |
| 1607 | goto fail4; |
| 1608 | } |
| 1609 | |
| 1610 | PDBG("%s txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n", |
| 1611 | __func__, ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid, |
| 1612 | ep->l2t->idx); |
| 1613 | |
| 1614 | state_set(&ep->com, CONNECTING); |
| 1615 | ep->tos = 0; |
| 1616 | |
| 1617 | /* send connect request to rnic */ |
| 1618 | err = send_connect(ep); |
| 1619 | if (!err) |
| 1620 | goto out; |
| 1621 | |
| 1622 | cxgb4_l2t_release(ep->l2t); |
| 1623 | fail4: |
| 1624 | dst_release(ep->dst); |
| 1625 | fail3: |
| 1626 | remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid); |
| 1627 | cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid); |
| 1628 | fail2: |
| 1629 | /* |
| 1630 | * remember to send notification to upper layer. |
| 1631 | * We are in here so the upper layer is not aware that this is |
| 1632 | * re-connect attempt and so, upper layer is still waiting for |
| 1633 | * response of 1st connect request. |
| 1634 | */ |
| 1635 | connect_reply_upcall(ep, -ECONNRESET); |
| 1636 | c4iw_put_ep(&ep->com); |
| 1637 | out: |
| 1638 | return err; |
| 1639 | } |
| 1640 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1641 | static int act_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb) |
| 1642 | { |
| 1643 | struct c4iw_ep *ep; |
| 1644 | struct cpl_act_open_rpl *rpl = cplhdr(skb); |
| 1645 | unsigned int atid = GET_TID_TID(GET_AOPEN_ATID( |
| 1646 | ntohl(rpl->atid_status))); |
| 1647 | struct tid_info *t = dev->rdev.lldi.tids; |
| 1648 | int status = GET_AOPEN_STATUS(ntohl(rpl->atid_status)); |
| 1649 | |
| 1650 | ep = lookup_atid(t, atid); |
| 1651 | |
| 1652 | PDBG("%s ep %p atid %u status %u errno %d\n", __func__, ep, atid, |
| 1653 | status, status2errno(status)); |
| 1654 | |
| 1655 | if (status == CPL_ERR_RTX_NEG_ADVICE) { |
| 1656 | printk(KERN_WARNING MOD "Connection problems for atid %u\n", |
| 1657 | atid); |
| 1658 | return 0; |
| 1659 | } |
| 1660 | |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 1661 | set_bit(ACT_OPEN_RPL, &ep->com.history); |
| 1662 | |
Vipul Pandya | d716a2a | 2012-05-18 15:29:31 +0530 | [diff] [blame] | 1663 | /* |
| 1664 | * Log interesting failures. |
| 1665 | */ |
| 1666 | switch (status) { |
| 1667 | case CPL_ERR_CONN_RESET: |
| 1668 | case CPL_ERR_CONN_TIMEDOUT: |
| 1669 | break; |
Vipul Pandya | 5be78ee | 2012-12-10 09:30:54 +0000 | [diff] [blame] | 1670 | case CPL_ERR_TCAM_FULL: |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 1671 | if (dev->rdev.lldi.enable_fw_ofld_conn) { |
| 1672 | mutex_lock(&dev->rdev.stats.lock); |
| 1673 | dev->rdev.stats.tcam_full++; |
| 1674 | mutex_unlock(&dev->rdev.stats.lock); |
| 1675 | send_fw_act_open_req(ep, |
| 1676 | GET_TID_TID(GET_AOPEN_ATID( |
| 1677 | ntohl(rpl->atid_status)))); |
| 1678 | return 0; |
| 1679 | } |
| 1680 | break; |
| 1681 | case CPL_ERR_CONN_EXIST: |
| 1682 | if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) { |
| 1683 | set_bit(ACT_RETRY_INUSE, &ep->com.history); |
| 1684 | remove_handle(ep->com.dev, &ep->com.dev->atid_idr, |
| 1685 | atid); |
| 1686 | cxgb4_free_atid(t, atid); |
| 1687 | dst_release(ep->dst); |
| 1688 | cxgb4_l2t_release(ep->l2t); |
| 1689 | c4iw_reconnect(ep); |
| 1690 | return 0; |
| 1691 | } |
Vipul Pandya | 5be78ee | 2012-12-10 09:30:54 +0000 | [diff] [blame] | 1692 | break; |
Vipul Pandya | d716a2a | 2012-05-18 15:29:31 +0530 | [diff] [blame] | 1693 | default: |
| 1694 | printk(KERN_INFO MOD "Active open failure - " |
| 1695 | "atid %u status %u errno %d %pI4:%u->%pI4:%u\n", |
| 1696 | atid, status, status2errno(status), |
| 1697 | &ep->com.local_addr.sin_addr.s_addr, |
| 1698 | ntohs(ep->com.local_addr.sin_port), |
| 1699 | &ep->com.remote_addr.sin_addr.s_addr, |
| 1700 | ntohs(ep->com.remote_addr.sin_port)); |
| 1701 | break; |
| 1702 | } |
| 1703 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1704 | connect_reply_upcall(ep, status2errno(status)); |
| 1705 | state_set(&ep->com, DEAD); |
| 1706 | |
| 1707 | if (status && act_open_has_tid(status)) |
| 1708 | cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, GET_TID(rpl)); |
| 1709 | |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 1710 | remove_handle(ep->com.dev, &ep->com.dev->atid_idr, atid); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1711 | cxgb4_free_atid(t, atid); |
| 1712 | dst_release(ep->dst); |
| 1713 | cxgb4_l2t_release(ep->l2t); |
| 1714 | c4iw_put_ep(&ep->com); |
| 1715 | |
| 1716 | return 0; |
| 1717 | } |
| 1718 | |
| 1719 | static int pass_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb) |
| 1720 | { |
| 1721 | struct cpl_pass_open_rpl *rpl = cplhdr(skb); |
| 1722 | struct tid_info *t = dev->rdev.lldi.tids; |
| 1723 | unsigned int stid = GET_TID(rpl); |
| 1724 | struct c4iw_listen_ep *ep = lookup_stid(t, stid); |
| 1725 | |
| 1726 | if (!ep) { |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 1727 | PDBG("%s stid %d lookup failure!\n", __func__, stid); |
| 1728 | goto out; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1729 | } |
| 1730 | PDBG("%s ep %p status %d error %d\n", __func__, ep, |
| 1731 | rpl->status, status2errno(rpl->status)); |
Steve Wise | d9594d9 | 2011-05-09 22:06:22 -0700 | [diff] [blame] | 1732 | c4iw_wake_up(&ep->com.wr_wait, status2errno(rpl->status)); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1733 | |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 1734 | out: |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1735 | return 0; |
| 1736 | } |
| 1737 | |
| 1738 | static int listen_stop(struct c4iw_listen_ep *ep) |
| 1739 | { |
| 1740 | struct sk_buff *skb; |
| 1741 | struct cpl_close_listsvr_req *req; |
| 1742 | |
| 1743 | PDBG("%s ep %p\n", __func__, ep); |
| 1744 | skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); |
| 1745 | if (!skb) { |
| 1746 | printk(KERN_ERR MOD "%s - failed to alloc skb\n", __func__); |
| 1747 | return -ENOMEM; |
| 1748 | } |
| 1749 | req = (struct cpl_close_listsvr_req *) skb_put(skb, sizeof(*req)); |
| 1750 | INIT_TP_WR(req, 0); |
| 1751 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_CLOSE_LISTSRV_REQ, |
| 1752 | ep->stid)); |
| 1753 | req->reply_ctrl = cpu_to_be16( |
| 1754 | QUEUENO(ep->com.dev->rdev.lldi.rxq_ids[0])); |
| 1755 | set_wr_txq(skb, CPL_PRIORITY_SETUP, 0); |
| 1756 | return c4iw_ofld_send(&ep->com.dev->rdev, skb); |
| 1757 | } |
| 1758 | |
| 1759 | static int close_listsrv_rpl(struct c4iw_dev *dev, struct sk_buff *skb) |
| 1760 | { |
| 1761 | struct cpl_close_listsvr_rpl *rpl = cplhdr(skb); |
| 1762 | struct tid_info *t = dev->rdev.lldi.tids; |
| 1763 | unsigned int stid = GET_TID(rpl); |
| 1764 | struct c4iw_listen_ep *ep = lookup_stid(t, stid); |
| 1765 | |
| 1766 | PDBG("%s ep %p\n", __func__, ep); |
Steve Wise | d9594d9 | 2011-05-09 22:06:22 -0700 | [diff] [blame] | 1767 | c4iw_wake_up(&ep->com.wr_wait, status2errno(rpl->status)); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1768 | return 0; |
| 1769 | } |
| 1770 | |
| 1771 | static void accept_cr(struct c4iw_ep *ep, __be32 peer_ip, struct sk_buff *skb, |
| 1772 | struct cpl_pass_accept_req *req) |
| 1773 | { |
| 1774 | struct cpl_pass_accept_rpl *rpl; |
| 1775 | unsigned int mtu_idx; |
| 1776 | u64 opt0; |
| 1777 | u32 opt2; |
| 1778 | int wscale; |
| 1779 | |
| 1780 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
| 1781 | BUG_ON(skb_cloned(skb)); |
| 1782 | skb_trim(skb, sizeof(*rpl)); |
| 1783 | skb_get(skb); |
| 1784 | cxgb4_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx); |
| 1785 | wscale = compute_wscale(rcv_win); |
Vipul Pandya | 5be78ee | 2012-12-10 09:30:54 +0000 | [diff] [blame] | 1786 | opt0 = (nocong ? NO_CONG(1) : 0) | |
| 1787 | KEEP_ALIVE(1) | |
Steve Wise | ba6d392 | 2010-06-23 15:46:49 +0000 | [diff] [blame] | 1788 | DELACK(1) | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1789 | WND_SCALE(wscale) | |
| 1790 | MSS_IDX(mtu_idx) | |
| 1791 | L2T_IDX(ep->l2t->idx) | |
| 1792 | TX_CHAN(ep->tx_chan) | |
| 1793 | SMAC_SEL(ep->smac_idx) | |
Vipul Pandya | 5be78ee | 2012-12-10 09:30:54 +0000 | [diff] [blame] | 1794 | DSCP(ep->tos >> 2) | |
Steve Wise | b48f3b9 | 2011-03-11 22:30:21 +0000 | [diff] [blame] | 1795 | ULP_MODE(ULP_MODE_TCPDDP) | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1796 | RCV_BUFSIZ(rcv_win>>10); |
| 1797 | opt2 = RX_CHANNEL(0) | |
| 1798 | RSS_QUEUE_VALID | RSS_QUEUE(ep->rss_qid); |
| 1799 | |
| 1800 | if (enable_tcp_timestamps && req->tcpopt.tstamp) |
| 1801 | opt2 |= TSTAMPS_EN(1); |
| 1802 | if (enable_tcp_sack && req->tcpopt.sack) |
| 1803 | opt2 |= SACK_EN(1); |
| 1804 | if (wscale && enable_tcp_window_scaling) |
| 1805 | opt2 |= WND_SCALE_EN(1); |
Vipul Pandya | 5be78ee | 2012-12-10 09:30:54 +0000 | [diff] [blame] | 1806 | if (enable_ecn) { |
| 1807 | const struct tcphdr *tcph; |
| 1808 | u32 hlen = ntohl(req->hdr_len); |
| 1809 | |
| 1810 | tcph = (const void *)(req + 1) + G_ETH_HDR_LEN(hlen) + |
| 1811 | G_IP_HDR_LEN(hlen); |
| 1812 | if (tcph->ece && tcph->cwr) |
| 1813 | opt2 |= CCTRL_ECN(1); |
| 1814 | } |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1815 | |
| 1816 | rpl = cplhdr(skb); |
| 1817 | INIT_TP_WR(rpl, ep->hwtid); |
| 1818 | OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL, |
| 1819 | ep->hwtid)); |
| 1820 | rpl->opt0 = cpu_to_be64(opt0); |
| 1821 | rpl->opt2 = cpu_to_be32(opt2); |
Steve Wise | d4f1a5c | 2010-07-23 19:12:32 +0000 | [diff] [blame] | 1822 | set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1823 | c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); |
| 1824 | |
| 1825 | return; |
| 1826 | } |
| 1827 | |
| 1828 | static void reject_cr(struct c4iw_dev *dev, u32 hwtid, __be32 peer_ip, |
| 1829 | struct sk_buff *skb) |
| 1830 | { |
| 1831 | PDBG("%s c4iw_dev %p tid %u peer_ip %x\n", __func__, dev, hwtid, |
| 1832 | peer_ip); |
| 1833 | BUG_ON(skb_cloned(skb)); |
| 1834 | skb_trim(skb, sizeof(struct cpl_tid_release)); |
| 1835 | skb_get(skb); |
| 1836 | release_tid(&dev->rdev, hwtid, skb); |
| 1837 | return; |
| 1838 | } |
| 1839 | |
| 1840 | static void get_4tuple(struct cpl_pass_accept_req *req, |
| 1841 | __be32 *local_ip, __be32 *peer_ip, |
| 1842 | __be16 *local_port, __be16 *peer_port) |
| 1843 | { |
| 1844 | int eth_len = G_ETH_HDR_LEN(be32_to_cpu(req->hdr_len)); |
| 1845 | int ip_len = G_IP_HDR_LEN(be32_to_cpu(req->hdr_len)); |
| 1846 | struct iphdr *ip = (struct iphdr *)((u8 *)(req + 1) + eth_len); |
| 1847 | struct tcphdr *tcp = (struct tcphdr *) |
| 1848 | ((u8 *)(req + 1) + eth_len + ip_len); |
| 1849 | |
| 1850 | PDBG("%s saddr 0x%x daddr 0x%x sport %u dport %u\n", __func__, |
| 1851 | ntohl(ip->saddr), ntohl(ip->daddr), ntohs(tcp->source), |
| 1852 | ntohs(tcp->dest)); |
| 1853 | |
| 1854 | *peer_ip = ip->saddr; |
| 1855 | *local_ip = ip->daddr; |
| 1856 | *peer_port = tcp->source; |
| 1857 | *local_port = tcp->dest; |
| 1858 | |
| 1859 | return; |
| 1860 | } |
| 1861 | |
David Miller | 3786cf1 | 2011-12-02 16:52:31 +0000 | [diff] [blame] | 1862 | static int import_ep(struct c4iw_ep *ep, __be32 peer_ip, struct dst_entry *dst, |
| 1863 | struct c4iw_dev *cdev, bool clear_mpa_v1) |
| 1864 | { |
| 1865 | struct neighbour *n; |
| 1866 | int err, step; |
| 1867 | |
David Miller | 64b7007 | 2012-01-24 13:15:57 +0000 | [diff] [blame] | 1868 | n = dst_neigh_lookup(dst, &peer_ip); |
David Miller | 3786cf1 | 2011-12-02 16:52:31 +0000 | [diff] [blame] | 1869 | if (!n) |
David Miller | 64b7007 | 2012-01-24 13:15:57 +0000 | [diff] [blame] | 1870 | return -ENODEV; |
| 1871 | |
| 1872 | rcu_read_lock(); |
David Miller | 3786cf1 | 2011-12-02 16:52:31 +0000 | [diff] [blame] | 1873 | err = -ENOMEM; |
| 1874 | if (n->dev->flags & IFF_LOOPBACK) { |
| 1875 | struct net_device *pdev; |
| 1876 | |
| 1877 | pdev = ip_dev_find(&init_net, peer_ip); |
Thadeu Lima de Souza Cascardo | 71b43fd | 2012-05-17 17:51:53 -0300 | [diff] [blame] | 1878 | if (!pdev) { |
| 1879 | err = -ENODEV; |
| 1880 | goto out; |
| 1881 | } |
David Miller | 3786cf1 | 2011-12-02 16:52:31 +0000 | [diff] [blame] | 1882 | ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t, |
| 1883 | n, pdev, 0); |
| 1884 | if (!ep->l2t) |
| 1885 | goto out; |
| 1886 | ep->mtu = pdev->mtu; |
| 1887 | ep->tx_chan = cxgb4_port_chan(pdev); |
| 1888 | ep->smac_idx = (cxgb4_port_viid(pdev) & 0x7F) << 1; |
| 1889 | step = cdev->rdev.lldi.ntxq / |
| 1890 | cdev->rdev.lldi.nchan; |
| 1891 | ep->txq_idx = cxgb4_port_idx(pdev) * step; |
| 1892 | step = cdev->rdev.lldi.nrxq / |
| 1893 | cdev->rdev.lldi.nchan; |
| 1894 | ep->ctrlq_idx = cxgb4_port_idx(pdev); |
| 1895 | ep->rss_qid = cdev->rdev.lldi.rxq_ids[ |
| 1896 | cxgb4_port_idx(pdev) * step]; |
| 1897 | dev_put(pdev); |
| 1898 | } else { |
| 1899 | ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t, |
| 1900 | n, n->dev, 0); |
| 1901 | if (!ep->l2t) |
| 1902 | goto out; |
Steve Wise | bd61baa | 2012-04-27 10:24:33 -0500 | [diff] [blame] | 1903 | ep->mtu = dst_mtu(dst); |
David Miller | 3786cf1 | 2011-12-02 16:52:31 +0000 | [diff] [blame] | 1904 | ep->tx_chan = cxgb4_port_chan(n->dev); |
| 1905 | ep->smac_idx = (cxgb4_port_viid(n->dev) & 0x7F) << 1; |
| 1906 | step = cdev->rdev.lldi.ntxq / |
| 1907 | cdev->rdev.lldi.nchan; |
| 1908 | ep->txq_idx = cxgb4_port_idx(n->dev) * step; |
| 1909 | ep->ctrlq_idx = cxgb4_port_idx(n->dev); |
| 1910 | step = cdev->rdev.lldi.nrxq / |
| 1911 | cdev->rdev.lldi.nchan; |
| 1912 | ep->rss_qid = cdev->rdev.lldi.rxq_ids[ |
| 1913 | cxgb4_port_idx(n->dev) * step]; |
| 1914 | |
| 1915 | if (clear_mpa_v1) { |
| 1916 | ep->retry_with_mpa_v1 = 0; |
| 1917 | ep->tried_with_mpa_v1 = 0; |
| 1918 | } |
| 1919 | } |
| 1920 | err = 0; |
| 1921 | out: |
| 1922 | rcu_read_unlock(); |
| 1923 | |
David Miller | 64b7007 | 2012-01-24 13:15:57 +0000 | [diff] [blame] | 1924 | neigh_release(n); |
| 1925 | |
David Miller | 3786cf1 | 2011-12-02 16:52:31 +0000 | [diff] [blame] | 1926 | return err; |
| 1927 | } |
| 1928 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1929 | static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb) |
| 1930 | { |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 1931 | struct c4iw_ep *child_ep = NULL, *parent_ep; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1932 | struct cpl_pass_accept_req *req = cplhdr(skb); |
| 1933 | unsigned int stid = GET_POPEN_TID(ntohl(req->tos_stid)); |
| 1934 | struct tid_info *t = dev->rdev.lldi.tids; |
| 1935 | unsigned int hwtid = GET_TID(req); |
| 1936 | struct dst_entry *dst; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1937 | struct rtable *rt; |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 1938 | __be32 local_ip, peer_ip = 0; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1939 | __be16 local_port, peer_port; |
David Miller | 3786cf1 | 2011-12-02 16:52:31 +0000 | [diff] [blame] | 1940 | int err; |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 1941 | u16 peer_mss = ntohs(req->tcpopt.mss); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1942 | |
| 1943 | parent_ep = lookup_stid(t, stid); |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 1944 | if (!parent_ep) { |
| 1945 | PDBG("%s connect request on invalid stid %d\n", __func__, stid); |
| 1946 | goto reject; |
| 1947 | } |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1948 | get_4tuple(req, &local_ip, &peer_ip, &local_port, &peer_port); |
| 1949 | |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 1950 | PDBG("%s parent ep %p hwtid %u laddr 0x%x raddr 0x%x lport %d " \ |
| 1951 | "rport %d peer_mss %d\n", __func__, parent_ep, hwtid, |
| 1952 | ntohl(local_ip), ntohl(peer_ip), ntohs(local_port), |
| 1953 | ntohs(peer_port), peer_mss); |
| 1954 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1955 | if (state_read(&parent_ep->com) != LISTEN) { |
| 1956 | printk(KERN_ERR "%s - listening ep not in LISTEN\n", |
| 1957 | __func__); |
| 1958 | goto reject; |
| 1959 | } |
| 1960 | |
| 1961 | /* Find output route */ |
| 1962 | rt = find_route(dev, local_ip, peer_ip, local_port, peer_port, |
| 1963 | GET_POPEN_TOS(ntohl(req->tos_stid))); |
| 1964 | if (!rt) { |
| 1965 | printk(KERN_ERR MOD "%s - failed to find dst entry!\n", |
| 1966 | __func__); |
| 1967 | goto reject; |
| 1968 | } |
Changli Gao | d8d1f30 | 2010-06-10 23:31:35 -0700 | [diff] [blame] | 1969 | dst = &rt->dst; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1970 | |
| 1971 | child_ep = alloc_ep(sizeof(*child_ep), GFP_KERNEL); |
| 1972 | if (!child_ep) { |
| 1973 | printk(KERN_ERR MOD "%s - failed to allocate ep entry!\n", |
| 1974 | __func__); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1975 | dst_release(dst); |
| 1976 | goto reject; |
| 1977 | } |
David Miller | 3786cf1 | 2011-12-02 16:52:31 +0000 | [diff] [blame] | 1978 | |
| 1979 | err = import_ep(child_ep, peer_ip, dst, dev, false); |
| 1980 | if (err) { |
| 1981 | printk(KERN_ERR MOD "%s - failed to allocate l2t entry!\n", |
| 1982 | __func__); |
| 1983 | dst_release(dst); |
| 1984 | kfree(child_ep); |
| 1985 | goto reject; |
| 1986 | } |
| 1987 | |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 1988 | if (peer_mss && child_ep->mtu > (peer_mss + 40)) |
| 1989 | child_ep->mtu = peer_mss + 40; |
| 1990 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1991 | state_set(&child_ep->com, CONNECTING); |
| 1992 | child_ep->com.dev = dev; |
| 1993 | child_ep->com.cm_id = NULL; |
| 1994 | child_ep->com.local_addr.sin_family = PF_INET; |
| 1995 | child_ep->com.local_addr.sin_port = local_port; |
| 1996 | child_ep->com.local_addr.sin_addr.s_addr = local_ip; |
| 1997 | child_ep->com.remote_addr.sin_family = PF_INET; |
| 1998 | child_ep->com.remote_addr.sin_port = peer_port; |
| 1999 | child_ep->com.remote_addr.sin_addr.s_addr = peer_ip; |
| 2000 | c4iw_get_ep(&parent_ep->com); |
| 2001 | child_ep->parent_ep = parent_ep; |
| 2002 | child_ep->tos = GET_POPEN_TOS(ntohl(req->tos_stid)); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2003 | child_ep->dst = dst; |
| 2004 | child_ep->hwtid = hwtid; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2005 | |
| 2006 | PDBG("%s tx_chan %u smac_idx %u rss_qid %u\n", __func__, |
David Miller | 3786cf1 | 2011-12-02 16:52:31 +0000 | [diff] [blame] | 2007 | child_ep->tx_chan, child_ep->smac_idx, child_ep->rss_qid); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2008 | |
| 2009 | init_timer(&child_ep->timer); |
| 2010 | cxgb4_insert_tid(t, child_ep, hwtid); |
| 2011 | accept_cr(child_ep, peer_ip, skb, req); |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 2012 | set_bit(PASS_ACCEPT_REQ, &child_ep->com.history); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2013 | goto out; |
| 2014 | reject: |
| 2015 | reject_cr(dev, hwtid, peer_ip, skb); |
| 2016 | out: |
| 2017 | return 0; |
| 2018 | } |
| 2019 | |
| 2020 | static int pass_establish(struct c4iw_dev *dev, struct sk_buff *skb) |
| 2021 | { |
| 2022 | struct c4iw_ep *ep; |
| 2023 | struct cpl_pass_establish *req = cplhdr(skb); |
| 2024 | struct tid_info *t = dev->rdev.lldi.tids; |
| 2025 | unsigned int tid = GET_TID(req); |
| 2026 | |
| 2027 | ep = lookup_tid(t, tid); |
| 2028 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
| 2029 | ep->snd_seq = be32_to_cpu(req->snd_isn); |
| 2030 | ep->rcv_seq = be32_to_cpu(req->rcv_isn); |
| 2031 | |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 2032 | PDBG("%s ep %p hwtid %u tcp_opt 0x%02x\n", __func__, ep, tid, |
| 2033 | ntohs(req->tcp_opt)); |
| 2034 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2035 | set_emss(ep, ntohs(req->tcp_opt)); |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 2036 | insert_handle(dev, &dev->hwtid_idr, ep, ep->hwtid); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2037 | |
| 2038 | dst_confirm(ep->dst); |
| 2039 | state_set(&ep->com, MPA_REQ_WAIT); |
| 2040 | start_ep_timer(ep); |
| 2041 | send_flowc(ep, skb); |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 2042 | set_bit(PASS_ESTAB, &ep->com.history); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2043 | |
| 2044 | return 0; |
| 2045 | } |
| 2046 | |
| 2047 | static int peer_close(struct c4iw_dev *dev, struct sk_buff *skb) |
| 2048 | { |
| 2049 | struct cpl_peer_close *hdr = cplhdr(skb); |
| 2050 | struct c4iw_ep *ep; |
| 2051 | struct c4iw_qp_attributes attrs; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2052 | int disconnect = 1; |
| 2053 | int release = 0; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2054 | struct tid_info *t = dev->rdev.lldi.tids; |
| 2055 | unsigned int tid = GET_TID(hdr); |
Steve Wise | 8da7e7a | 2011-06-14 20:59:27 +0000 | [diff] [blame] | 2056 | int ret; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2057 | |
| 2058 | ep = lookup_tid(t, tid); |
| 2059 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
| 2060 | dst_confirm(ep->dst); |
| 2061 | |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 2062 | set_bit(PEER_CLOSE, &ep->com.history); |
Steve Wise | 2f5b48c | 2010-09-10 11:15:36 -0500 | [diff] [blame] | 2063 | mutex_lock(&ep->com.mutex); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2064 | switch (ep->com.state) { |
| 2065 | case MPA_REQ_WAIT: |
| 2066 | __state_set(&ep->com, CLOSING); |
| 2067 | break; |
| 2068 | case MPA_REQ_SENT: |
| 2069 | __state_set(&ep->com, CLOSING); |
| 2070 | connect_reply_upcall(ep, -ECONNRESET); |
| 2071 | break; |
| 2072 | case MPA_REQ_RCVD: |
| 2073 | |
| 2074 | /* |
| 2075 | * We're gonna mark this puppy DEAD, but keep |
| 2076 | * the reference on it until the ULP accepts or |
| 2077 | * rejects the CR. Also wake up anyone waiting |
| 2078 | * in rdma connection migration (see c4iw_accept_cr()). |
| 2079 | */ |
| 2080 | __state_set(&ep->com, CLOSING); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2081 | PDBG("waking up ep %p tid %u\n", ep, ep->hwtid); |
Steve Wise | d9594d9 | 2011-05-09 22:06:22 -0700 | [diff] [blame] | 2082 | c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2083 | break; |
| 2084 | case MPA_REP_SENT: |
| 2085 | __state_set(&ep->com, CLOSING); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2086 | PDBG("waking up ep %p tid %u\n", ep, ep->hwtid); |
Steve Wise | d9594d9 | 2011-05-09 22:06:22 -0700 | [diff] [blame] | 2087 | c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2088 | break; |
| 2089 | case FPDU_MODE: |
Steve Wise | ca5a220 | 2010-07-23 19:12:37 +0000 | [diff] [blame] | 2090 | start_ep_timer(ep); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2091 | __state_set(&ep->com, CLOSING); |
Steve Wise | 30c95c2 | 2011-05-09 22:06:22 -0700 | [diff] [blame] | 2092 | attrs.next_state = C4IW_QP_STATE_CLOSING; |
Steve Wise | 8da7e7a | 2011-06-14 20:59:27 +0000 | [diff] [blame] | 2093 | ret = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, |
Steve Wise | 30c95c2 | 2011-05-09 22:06:22 -0700 | [diff] [blame] | 2094 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); |
Steve Wise | 8da7e7a | 2011-06-14 20:59:27 +0000 | [diff] [blame] | 2095 | if (ret != -ECONNRESET) { |
| 2096 | peer_close_upcall(ep); |
| 2097 | disconnect = 1; |
| 2098 | } |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2099 | break; |
| 2100 | case ABORTING: |
| 2101 | disconnect = 0; |
| 2102 | break; |
| 2103 | case CLOSING: |
| 2104 | __state_set(&ep->com, MORIBUND); |
| 2105 | disconnect = 0; |
| 2106 | break; |
| 2107 | case MORIBUND: |
Steve Wise | ca5a220 | 2010-07-23 19:12:37 +0000 | [diff] [blame] | 2108 | stop_ep_timer(ep); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2109 | if (ep->com.cm_id && ep->com.qp) { |
| 2110 | attrs.next_state = C4IW_QP_STATE_IDLE; |
| 2111 | c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, |
| 2112 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); |
| 2113 | } |
| 2114 | close_complete_upcall(ep); |
| 2115 | __state_set(&ep->com, DEAD); |
| 2116 | release = 1; |
| 2117 | disconnect = 0; |
| 2118 | break; |
| 2119 | case DEAD: |
| 2120 | disconnect = 0; |
| 2121 | break; |
| 2122 | default: |
| 2123 | BUG_ON(1); |
| 2124 | } |
Steve Wise | 2f5b48c | 2010-09-10 11:15:36 -0500 | [diff] [blame] | 2125 | mutex_unlock(&ep->com.mutex); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2126 | if (disconnect) |
| 2127 | c4iw_ep_disconnect(ep, 0, GFP_KERNEL); |
| 2128 | if (release) |
| 2129 | release_ep_resources(ep); |
| 2130 | return 0; |
| 2131 | } |
| 2132 | |
| 2133 | /* |
| 2134 | * Returns whether an ABORT_REQ_RSS message is a negative advice. |
| 2135 | */ |
| 2136 | static int is_neg_adv_abort(unsigned int status) |
| 2137 | { |
| 2138 | return status == CPL_ERR_RTX_NEG_ADVICE || |
| 2139 | status == CPL_ERR_PERSIST_NEG_ADVICE; |
| 2140 | } |
| 2141 | |
| 2142 | static int peer_abort(struct c4iw_dev *dev, struct sk_buff *skb) |
| 2143 | { |
| 2144 | struct cpl_abort_req_rss *req = cplhdr(skb); |
| 2145 | struct c4iw_ep *ep; |
| 2146 | struct cpl_abort_rpl *rpl; |
| 2147 | struct sk_buff *rpl_skb; |
| 2148 | struct c4iw_qp_attributes attrs; |
| 2149 | int ret; |
| 2150 | int release = 0; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2151 | struct tid_info *t = dev->rdev.lldi.tids; |
| 2152 | unsigned int tid = GET_TID(req); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2153 | |
| 2154 | ep = lookup_tid(t, tid); |
| 2155 | if (is_neg_adv_abort(req->status)) { |
| 2156 | PDBG("%s neg_adv_abort ep %p tid %u\n", __func__, ep, |
| 2157 | ep->hwtid); |
| 2158 | return 0; |
| 2159 | } |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2160 | PDBG("%s ep %p tid %u state %u\n", __func__, ep, ep->hwtid, |
| 2161 | ep->com.state); |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 2162 | set_bit(PEER_ABORT, &ep->com.history); |
Steve Wise | 2f5b48c | 2010-09-10 11:15:36 -0500 | [diff] [blame] | 2163 | |
| 2164 | /* |
| 2165 | * Wake up any threads in rdma_init() or rdma_fini(). |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 2166 | * However, this is not needed if com state is just |
| 2167 | * MPA_REQ_SENT |
Steve Wise | 2f5b48c | 2010-09-10 11:15:36 -0500 | [diff] [blame] | 2168 | */ |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 2169 | if (ep->com.state != MPA_REQ_SENT) |
| 2170 | c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); |
Steve Wise | 2f5b48c | 2010-09-10 11:15:36 -0500 | [diff] [blame] | 2171 | |
| 2172 | mutex_lock(&ep->com.mutex); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2173 | switch (ep->com.state) { |
| 2174 | case CONNECTING: |
| 2175 | break; |
| 2176 | case MPA_REQ_WAIT: |
Steve Wise | ca5a220 | 2010-07-23 19:12:37 +0000 | [diff] [blame] | 2177 | stop_ep_timer(ep); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2178 | break; |
| 2179 | case MPA_REQ_SENT: |
Steve Wise | ca5a220 | 2010-07-23 19:12:37 +0000 | [diff] [blame] | 2180 | stop_ep_timer(ep); |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 2181 | if (mpa_rev == 2 && ep->tried_with_mpa_v1) |
| 2182 | connect_reply_upcall(ep, -ECONNRESET); |
| 2183 | else { |
| 2184 | /* |
| 2185 | * we just don't send notification upwards because we |
| 2186 | * want to retry with mpa_v1 without upper layers even |
| 2187 | * knowing it. |
| 2188 | * |
| 2189 | * do some housekeeping so as to re-initiate the |
| 2190 | * connection |
| 2191 | */ |
| 2192 | PDBG("%s: mpa_rev=%d. Retrying with mpav1\n", __func__, |
| 2193 | mpa_rev); |
| 2194 | ep->retry_with_mpa_v1 = 1; |
| 2195 | } |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2196 | break; |
| 2197 | case MPA_REP_SENT: |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2198 | break; |
| 2199 | case MPA_REQ_RCVD: |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2200 | break; |
| 2201 | case MORIBUND: |
| 2202 | case CLOSING: |
Steve Wise | ca5a220 | 2010-07-23 19:12:37 +0000 | [diff] [blame] | 2203 | stop_ep_timer(ep); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2204 | /*FALLTHROUGH*/ |
| 2205 | case FPDU_MODE: |
| 2206 | if (ep->com.cm_id && ep->com.qp) { |
| 2207 | attrs.next_state = C4IW_QP_STATE_ERROR; |
| 2208 | ret = c4iw_modify_qp(ep->com.qp->rhp, |
| 2209 | ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, |
| 2210 | &attrs, 1); |
| 2211 | if (ret) |
| 2212 | printk(KERN_ERR MOD |
| 2213 | "%s - qp <- error failed!\n", |
| 2214 | __func__); |
| 2215 | } |
| 2216 | peer_abort_upcall(ep); |
| 2217 | break; |
| 2218 | case ABORTING: |
| 2219 | break; |
| 2220 | case DEAD: |
| 2221 | PDBG("%s PEER_ABORT IN DEAD STATE!!!!\n", __func__); |
Steve Wise | 2f5b48c | 2010-09-10 11:15:36 -0500 | [diff] [blame] | 2222 | mutex_unlock(&ep->com.mutex); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2223 | return 0; |
| 2224 | default: |
| 2225 | BUG_ON(1); |
| 2226 | break; |
| 2227 | } |
| 2228 | dst_confirm(ep->dst); |
| 2229 | if (ep->com.state != ABORTING) { |
| 2230 | __state_set(&ep->com, DEAD); |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 2231 | /* we don't release if we want to retry with mpa_v1 */ |
| 2232 | if (!ep->retry_with_mpa_v1) |
| 2233 | release = 1; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2234 | } |
Steve Wise | 2f5b48c | 2010-09-10 11:15:36 -0500 | [diff] [blame] | 2235 | mutex_unlock(&ep->com.mutex); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2236 | |
| 2237 | rpl_skb = get_skb(skb, sizeof(*rpl), GFP_KERNEL); |
| 2238 | if (!rpl_skb) { |
| 2239 | printk(KERN_ERR MOD "%s - cannot allocate skb!\n", |
| 2240 | __func__); |
| 2241 | release = 1; |
| 2242 | goto out; |
| 2243 | } |
| 2244 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); |
| 2245 | rpl = (struct cpl_abort_rpl *) skb_put(rpl_skb, sizeof(*rpl)); |
| 2246 | INIT_TP_WR(rpl, ep->hwtid); |
| 2247 | OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_RPL, ep->hwtid)); |
| 2248 | rpl->cmd = CPL_ABORT_NO_RST; |
| 2249 | c4iw_ofld_send(&ep->com.dev->rdev, rpl_skb); |
| 2250 | out: |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2251 | if (release) |
| 2252 | release_ep_resources(ep); |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 2253 | |
| 2254 | /* retry with mpa-v1 */ |
| 2255 | if (ep && ep->retry_with_mpa_v1) { |
| 2256 | cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid); |
| 2257 | dst_release(ep->dst); |
| 2258 | cxgb4_l2t_release(ep->l2t); |
| 2259 | c4iw_reconnect(ep); |
| 2260 | } |
| 2261 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2262 | return 0; |
| 2263 | } |
| 2264 | |
| 2265 | static int close_con_rpl(struct c4iw_dev *dev, struct sk_buff *skb) |
| 2266 | { |
| 2267 | struct c4iw_ep *ep; |
| 2268 | struct c4iw_qp_attributes attrs; |
| 2269 | struct cpl_close_con_rpl *rpl = cplhdr(skb); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2270 | int release = 0; |
| 2271 | struct tid_info *t = dev->rdev.lldi.tids; |
| 2272 | unsigned int tid = GET_TID(rpl); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2273 | |
| 2274 | ep = lookup_tid(t, tid); |
| 2275 | |
| 2276 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
| 2277 | BUG_ON(!ep); |
| 2278 | |
| 2279 | /* The cm_id may be null if we failed to connect */ |
Steve Wise | 2f5b48c | 2010-09-10 11:15:36 -0500 | [diff] [blame] | 2280 | mutex_lock(&ep->com.mutex); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2281 | switch (ep->com.state) { |
| 2282 | case CLOSING: |
| 2283 | __state_set(&ep->com, MORIBUND); |
| 2284 | break; |
| 2285 | case MORIBUND: |
Steve Wise | ca5a220 | 2010-07-23 19:12:37 +0000 | [diff] [blame] | 2286 | stop_ep_timer(ep); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2287 | if ((ep->com.cm_id) && (ep->com.qp)) { |
| 2288 | attrs.next_state = C4IW_QP_STATE_IDLE; |
| 2289 | c4iw_modify_qp(ep->com.qp->rhp, |
| 2290 | ep->com.qp, |
| 2291 | C4IW_QP_ATTR_NEXT_STATE, |
| 2292 | &attrs, 1); |
| 2293 | } |
| 2294 | close_complete_upcall(ep); |
| 2295 | __state_set(&ep->com, DEAD); |
| 2296 | release = 1; |
| 2297 | break; |
| 2298 | case ABORTING: |
| 2299 | case DEAD: |
| 2300 | break; |
| 2301 | default: |
| 2302 | BUG_ON(1); |
| 2303 | break; |
| 2304 | } |
Steve Wise | 2f5b48c | 2010-09-10 11:15:36 -0500 | [diff] [blame] | 2305 | mutex_unlock(&ep->com.mutex); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2306 | if (release) |
| 2307 | release_ep_resources(ep); |
| 2308 | return 0; |
| 2309 | } |
| 2310 | |
| 2311 | static int terminate(struct c4iw_dev *dev, struct sk_buff *skb) |
| 2312 | { |
Steve Wise | 0e42c1f | 2010-09-10 11:15:09 -0500 | [diff] [blame] | 2313 | struct cpl_rdma_terminate *rpl = cplhdr(skb); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2314 | struct tid_info *t = dev->rdev.lldi.tids; |
Steve Wise | 0e42c1f | 2010-09-10 11:15:09 -0500 | [diff] [blame] | 2315 | unsigned int tid = GET_TID(rpl); |
| 2316 | struct c4iw_ep *ep; |
| 2317 | struct c4iw_qp_attributes attrs; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2318 | |
| 2319 | ep = lookup_tid(t, tid); |
Steve Wise | 0e42c1f | 2010-09-10 11:15:09 -0500 | [diff] [blame] | 2320 | BUG_ON(!ep); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2321 | |
Steve Wise | 30c95c2 | 2011-05-09 22:06:22 -0700 | [diff] [blame] | 2322 | if (ep && ep->com.qp) { |
Steve Wise | 0e42c1f | 2010-09-10 11:15:09 -0500 | [diff] [blame] | 2323 | printk(KERN_WARNING MOD "TERM received tid %u qpid %u\n", tid, |
| 2324 | ep->com.qp->wq.sq.qid); |
| 2325 | attrs.next_state = C4IW_QP_STATE_TERMINATE; |
| 2326 | c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, |
| 2327 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); |
| 2328 | } else |
Steve Wise | 30c95c2 | 2011-05-09 22:06:22 -0700 | [diff] [blame] | 2329 | printk(KERN_WARNING MOD "TERM received tid %u no ep/qp\n", tid); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2330 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2331 | return 0; |
| 2332 | } |
| 2333 | |
| 2334 | /* |
| 2335 | * Upcall from the adapter indicating data has been transmitted. |
| 2336 | * For us its just the single MPA request or reply. We can now free |
| 2337 | * the skb holding the mpa message. |
| 2338 | */ |
| 2339 | static int fw4_ack(struct c4iw_dev *dev, struct sk_buff *skb) |
| 2340 | { |
| 2341 | struct c4iw_ep *ep; |
| 2342 | struct cpl_fw4_ack *hdr = cplhdr(skb); |
| 2343 | u8 credits = hdr->credits; |
| 2344 | unsigned int tid = GET_TID(hdr); |
| 2345 | struct tid_info *t = dev->rdev.lldi.tids; |
| 2346 | |
| 2347 | |
| 2348 | ep = lookup_tid(t, tid); |
| 2349 | PDBG("%s ep %p tid %u credits %u\n", __func__, ep, ep->hwtid, credits); |
| 2350 | if (credits == 0) { |
Joe Perches | aa1ad26 | 2010-10-25 19:44:22 -0700 | [diff] [blame] | 2351 | PDBG("%s 0 credit ack ep %p tid %u state %u\n", |
| 2352 | __func__, ep, ep->hwtid, state_read(&ep->com)); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2353 | return 0; |
| 2354 | } |
| 2355 | |
| 2356 | dst_confirm(ep->dst); |
| 2357 | if (ep->mpa_skb) { |
| 2358 | PDBG("%s last streaming msg ack ep %p tid %u state %u " |
| 2359 | "initiator %u freeing skb\n", __func__, ep, ep->hwtid, |
| 2360 | state_read(&ep->com), ep->mpa_attr.initiator ? 1 : 0); |
| 2361 | kfree_skb(ep->mpa_skb); |
| 2362 | ep->mpa_skb = NULL; |
| 2363 | } |
| 2364 | return 0; |
| 2365 | } |
| 2366 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2367 | int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) |
| 2368 | { |
| 2369 | int err; |
| 2370 | struct c4iw_ep *ep = to_ep(cm_id); |
| 2371 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
| 2372 | |
| 2373 | if (state_read(&ep->com) == DEAD) { |
| 2374 | c4iw_put_ep(&ep->com); |
| 2375 | return -ECONNRESET; |
| 2376 | } |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 2377 | set_bit(ULP_REJECT, &ep->com.history); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2378 | BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD); |
| 2379 | if (mpa_rev == 0) |
| 2380 | abort_connection(ep, NULL, GFP_KERNEL); |
| 2381 | else { |
| 2382 | err = send_mpa_reject(ep, pdata, pdata_len); |
| 2383 | err = c4iw_ep_disconnect(ep, 0, GFP_KERNEL); |
| 2384 | } |
| 2385 | c4iw_put_ep(&ep->com); |
| 2386 | return 0; |
| 2387 | } |
| 2388 | |
| 2389 | int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) |
| 2390 | { |
| 2391 | int err; |
| 2392 | struct c4iw_qp_attributes attrs; |
| 2393 | enum c4iw_qp_attr_mask mask; |
| 2394 | struct c4iw_ep *ep = to_ep(cm_id); |
| 2395 | struct c4iw_dev *h = to_c4iw_dev(cm_id->device); |
| 2396 | struct c4iw_qp *qp = get_qhp(h, conn_param->qpn); |
| 2397 | |
| 2398 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
| 2399 | if (state_read(&ep->com) == DEAD) { |
| 2400 | err = -ECONNRESET; |
| 2401 | goto err; |
| 2402 | } |
| 2403 | |
| 2404 | BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD); |
| 2405 | BUG_ON(!qp); |
| 2406 | |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 2407 | set_bit(ULP_ACCEPT, &ep->com.history); |
Roland Dreier | be4c9ba | 2010-05-05 14:45:40 -0700 | [diff] [blame] | 2408 | if ((conn_param->ord > c4iw_max_read_depth) || |
| 2409 | (conn_param->ird > c4iw_max_read_depth)) { |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2410 | abort_connection(ep, NULL, GFP_KERNEL); |
| 2411 | err = -EINVAL; |
| 2412 | goto err; |
| 2413 | } |
| 2414 | |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 2415 | if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { |
| 2416 | if (conn_param->ord > ep->ird) { |
| 2417 | ep->ird = conn_param->ird; |
| 2418 | ep->ord = conn_param->ord; |
| 2419 | send_mpa_reject(ep, conn_param->private_data, |
| 2420 | conn_param->private_data_len); |
| 2421 | abort_connection(ep, NULL, GFP_KERNEL); |
| 2422 | err = -ENOMEM; |
| 2423 | goto err; |
| 2424 | } |
| 2425 | if (conn_param->ird > ep->ord) { |
| 2426 | if (!ep->ord) |
| 2427 | conn_param->ird = 1; |
| 2428 | else { |
| 2429 | abort_connection(ep, NULL, GFP_KERNEL); |
| 2430 | err = -ENOMEM; |
| 2431 | goto err; |
| 2432 | } |
| 2433 | } |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2434 | |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 2435 | } |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2436 | ep->ird = conn_param->ird; |
| 2437 | ep->ord = conn_param->ord; |
| 2438 | |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 2439 | if (ep->mpa_attr.version != 2) |
| 2440 | if (peer2peer && ep->ird == 0) |
| 2441 | ep->ird = 1; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2442 | |
| 2443 | PDBG("%s %d ird %d ord %d\n", __func__, __LINE__, ep->ird, ep->ord); |
| 2444 | |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 2445 | cm_id->add_ref(cm_id); |
| 2446 | ep->com.cm_id = cm_id; |
| 2447 | ep->com.qp = qp; |
Vipul Pandya | 325abea | 2013-01-07 13:11:53 +0000 | [diff] [blame] | 2448 | ref_qp(ep); |
Kumar Sanghvi | d2fe99e | 2011-09-25 20:17:44 +0530 | [diff] [blame] | 2449 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2450 | /* bind QP to EP and move to RTS */ |
| 2451 | attrs.mpa_attr = ep->mpa_attr; |
| 2452 | attrs.max_ird = ep->ird; |
| 2453 | attrs.max_ord = ep->ord; |
| 2454 | attrs.llp_stream_handle = ep; |
| 2455 | attrs.next_state = C4IW_QP_STATE_RTS; |
| 2456 | |
| 2457 | /* bind QP and TID with INIT_WR */ |
| 2458 | mask = C4IW_QP_ATTR_NEXT_STATE | |
| 2459 | C4IW_QP_ATTR_LLP_STREAM_HANDLE | |
| 2460 | C4IW_QP_ATTR_MPA_ATTR | |
| 2461 | C4IW_QP_ATTR_MAX_IRD | |
| 2462 | C4IW_QP_ATTR_MAX_ORD; |
| 2463 | |
| 2464 | err = c4iw_modify_qp(ep->com.qp->rhp, |
| 2465 | ep->com.qp, mask, &attrs, 1); |
| 2466 | if (err) |
| 2467 | goto err1; |
| 2468 | err = send_mpa_reply(ep, conn_param->private_data, |
| 2469 | conn_param->private_data_len); |
| 2470 | if (err) |
| 2471 | goto err1; |
| 2472 | |
| 2473 | state_set(&ep->com, FPDU_MODE); |
| 2474 | established_upcall(ep); |
| 2475 | c4iw_put_ep(&ep->com); |
| 2476 | return 0; |
| 2477 | err1: |
| 2478 | ep->com.cm_id = NULL; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2479 | cm_id->rem_ref(cm_id); |
| 2480 | err: |
| 2481 | c4iw_put_ep(&ep->com); |
| 2482 | return err; |
| 2483 | } |
| 2484 | |
| 2485 | int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) |
| 2486 | { |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2487 | struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); |
| 2488 | struct c4iw_ep *ep; |
| 2489 | struct rtable *rt; |
David Miller | 3786cf1 | 2011-12-02 16:52:31 +0000 | [diff] [blame] | 2490 | int err = 0; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2491 | |
Roland Dreier | be4c9ba | 2010-05-05 14:45:40 -0700 | [diff] [blame] | 2492 | if ((conn_param->ord > c4iw_max_read_depth) || |
| 2493 | (conn_param->ird > c4iw_max_read_depth)) { |
| 2494 | err = -EINVAL; |
| 2495 | goto out; |
| 2496 | } |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2497 | ep = alloc_ep(sizeof(*ep), GFP_KERNEL); |
| 2498 | if (!ep) { |
| 2499 | printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__); |
| 2500 | err = -ENOMEM; |
| 2501 | goto out; |
| 2502 | } |
| 2503 | init_timer(&ep->timer); |
| 2504 | ep->plen = conn_param->private_data_len; |
| 2505 | if (ep->plen) |
| 2506 | memcpy(ep->mpa_pkt + sizeof(struct mpa_message), |
| 2507 | conn_param->private_data, ep->plen); |
| 2508 | ep->ird = conn_param->ird; |
| 2509 | ep->ord = conn_param->ord; |
| 2510 | |
| 2511 | if (peer2peer && ep->ord == 0) |
| 2512 | ep->ord = 1; |
| 2513 | |
| 2514 | cm_id->add_ref(cm_id); |
| 2515 | ep->com.dev = dev; |
| 2516 | ep->com.cm_id = cm_id; |
| 2517 | ep->com.qp = get_qhp(dev, conn_param->qpn); |
| 2518 | BUG_ON(!ep->com.qp); |
Vipul Pandya | 325abea | 2013-01-07 13:11:53 +0000 | [diff] [blame] | 2519 | ref_qp(ep); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2520 | PDBG("%s qpn 0x%x qp %p cm_id %p\n", __func__, conn_param->qpn, |
| 2521 | ep->com.qp, cm_id); |
| 2522 | |
| 2523 | /* |
| 2524 | * Allocate an active TID to initiate a TCP connection. |
| 2525 | */ |
| 2526 | ep->atid = cxgb4_alloc_atid(dev->rdev.lldi.tids, ep); |
| 2527 | if (ep->atid == -1) { |
| 2528 | printk(KERN_ERR MOD "%s - cannot alloc atid.\n", __func__); |
| 2529 | err = -ENOMEM; |
| 2530 | goto fail2; |
| 2531 | } |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 2532 | insert_handle(dev, &dev->atid_idr, ep, ep->atid); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2533 | |
| 2534 | PDBG("%s saddr 0x%x sport 0x%x raddr 0x%x rport 0x%x\n", __func__, |
| 2535 | ntohl(cm_id->local_addr.sin_addr.s_addr), |
| 2536 | ntohs(cm_id->local_addr.sin_port), |
| 2537 | ntohl(cm_id->remote_addr.sin_addr.s_addr), |
| 2538 | ntohs(cm_id->remote_addr.sin_port)); |
| 2539 | |
| 2540 | /* find a route */ |
| 2541 | rt = find_route(dev, |
| 2542 | cm_id->local_addr.sin_addr.s_addr, |
| 2543 | cm_id->remote_addr.sin_addr.s_addr, |
| 2544 | cm_id->local_addr.sin_port, |
| 2545 | cm_id->remote_addr.sin_port, 0); |
| 2546 | if (!rt) { |
| 2547 | printk(KERN_ERR MOD "%s - cannot find route.\n", __func__); |
| 2548 | err = -EHOSTUNREACH; |
| 2549 | goto fail3; |
| 2550 | } |
Changli Gao | d8d1f30 | 2010-06-10 23:31:35 -0700 | [diff] [blame] | 2551 | ep->dst = &rt->dst; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2552 | |
David Miller | 3786cf1 | 2011-12-02 16:52:31 +0000 | [diff] [blame] | 2553 | err = import_ep(ep, cm_id->remote_addr.sin_addr.s_addr, |
| 2554 | ep->dst, ep->com.dev, true); |
| 2555 | if (err) { |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2556 | printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __func__); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2557 | goto fail4; |
| 2558 | } |
| 2559 | |
| 2560 | PDBG("%s txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n", |
| 2561 | __func__, ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid, |
| 2562 | ep->l2t->idx); |
| 2563 | |
| 2564 | state_set(&ep->com, CONNECTING); |
| 2565 | ep->tos = 0; |
| 2566 | ep->com.local_addr = cm_id->local_addr; |
| 2567 | ep->com.remote_addr = cm_id->remote_addr; |
| 2568 | |
| 2569 | /* send connect request to rnic */ |
| 2570 | err = send_connect(ep); |
| 2571 | if (!err) |
| 2572 | goto out; |
| 2573 | |
| 2574 | cxgb4_l2t_release(ep->l2t); |
| 2575 | fail4: |
| 2576 | dst_release(ep->dst); |
| 2577 | fail3: |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 2578 | remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2579 | cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid); |
| 2580 | fail2: |
| 2581 | cm_id->rem_ref(cm_id); |
| 2582 | c4iw_put_ep(&ep->com); |
| 2583 | out: |
| 2584 | return err; |
| 2585 | } |
| 2586 | |
| 2587 | int c4iw_create_listen(struct iw_cm_id *cm_id, int backlog) |
| 2588 | { |
| 2589 | int err = 0; |
| 2590 | struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); |
| 2591 | struct c4iw_listen_ep *ep; |
| 2592 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2593 | might_sleep(); |
| 2594 | |
| 2595 | ep = alloc_ep(sizeof(*ep), GFP_KERNEL); |
| 2596 | if (!ep) { |
| 2597 | printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__); |
| 2598 | err = -ENOMEM; |
| 2599 | goto fail1; |
| 2600 | } |
| 2601 | PDBG("%s ep %p\n", __func__, ep); |
| 2602 | cm_id->add_ref(cm_id); |
| 2603 | ep->com.cm_id = cm_id; |
| 2604 | ep->com.dev = dev; |
| 2605 | ep->backlog = backlog; |
| 2606 | ep->com.local_addr = cm_id->local_addr; |
| 2607 | |
| 2608 | /* |
| 2609 | * Allocate a server TID. |
| 2610 | */ |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 2611 | if (dev->rdev.lldi.enable_fw_ofld_conn) |
| 2612 | ep->stid = cxgb4_alloc_sftid(dev->rdev.lldi.tids, PF_INET, ep); |
| 2613 | else |
| 2614 | ep->stid = cxgb4_alloc_stid(dev->rdev.lldi.tids, PF_INET, ep); |
| 2615 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2616 | if (ep->stid == -1) { |
Roland Dreier | be4c9ba | 2010-05-05 14:45:40 -0700 | [diff] [blame] | 2617 | printk(KERN_ERR MOD "%s - cannot alloc stid.\n", __func__); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2618 | err = -ENOMEM; |
| 2619 | goto fail2; |
| 2620 | } |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 2621 | insert_handle(dev, &dev->stid_idr, ep, ep->stid); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2622 | state_set(&ep->com, LISTEN); |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 2623 | if (dev->rdev.lldi.enable_fw_ofld_conn) { |
| 2624 | do { |
| 2625 | err = cxgb4_create_server_filter( |
| 2626 | ep->com.dev->rdev.lldi.ports[0], ep->stid, |
| 2627 | ep->com.local_addr.sin_addr.s_addr, |
| 2628 | ep->com.local_addr.sin_port, |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 2629 | 0, |
| 2630 | ep->com.dev->rdev.lldi.rxq_ids[0], |
| 2631 | 0, |
| 2632 | 0); |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 2633 | if (err == -EBUSY) { |
| 2634 | set_current_state(TASK_UNINTERRUPTIBLE); |
| 2635 | schedule_timeout(usecs_to_jiffies(100)); |
| 2636 | } |
| 2637 | } while (err == -EBUSY); |
| 2638 | } else { |
| 2639 | c4iw_init_wr_wait(&ep->com.wr_wait); |
| 2640 | err = cxgb4_create_server(ep->com.dev->rdev.lldi.ports[0], |
| 2641 | ep->stid, ep->com.local_addr.sin_addr.s_addr, |
| 2642 | ep->com.local_addr.sin_port, |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 2643 | 0, |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 2644 | ep->com.dev->rdev.lldi.rxq_ids[0]); |
| 2645 | if (!err) |
| 2646 | err = c4iw_wait_for_reply(&ep->com.dev->rdev, |
| 2647 | &ep->com.wr_wait, |
| 2648 | 0, 0, __func__); |
| 2649 | } |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2650 | if (!err) { |
| 2651 | cm_id->provider_data = ep; |
| 2652 | goto out; |
| 2653 | } |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 2654 | pr_err("%s cxgb4_create_server/filter failed err %d " \ |
| 2655 | "stid %d laddr %08x lport %d\n", \ |
| 2656 | __func__, err, ep->stid, |
| 2657 | ntohl(ep->com.local_addr.sin_addr.s_addr), |
| 2658 | ntohs(ep->com.local_addr.sin_port)); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2659 | cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid, PF_INET); |
| 2660 | fail2: |
| 2661 | cm_id->rem_ref(cm_id); |
| 2662 | c4iw_put_ep(&ep->com); |
| 2663 | fail1: |
| 2664 | out: |
| 2665 | return err; |
| 2666 | } |
| 2667 | |
| 2668 | int c4iw_destroy_listen(struct iw_cm_id *cm_id) |
| 2669 | { |
| 2670 | int err; |
| 2671 | struct c4iw_listen_ep *ep = to_listen_ep(cm_id); |
| 2672 | |
| 2673 | PDBG("%s ep %p\n", __func__, ep); |
| 2674 | |
| 2675 | might_sleep(); |
| 2676 | state_set(&ep->com, DEAD); |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 2677 | if (ep->com.dev->rdev.lldi.enable_fw_ofld_conn) { |
| 2678 | err = cxgb4_remove_server_filter( |
| 2679 | ep->com.dev->rdev.lldi.ports[0], ep->stid, |
| 2680 | ep->com.dev->rdev.lldi.rxq_ids[0], 0); |
| 2681 | } else { |
| 2682 | c4iw_init_wr_wait(&ep->com.wr_wait); |
| 2683 | err = listen_stop(ep); |
| 2684 | if (err) |
| 2685 | goto done; |
| 2686 | err = c4iw_wait_for_reply(&ep->com.dev->rdev, &ep->com.wr_wait, |
| 2687 | 0, 0, __func__); |
| 2688 | } |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 2689 | remove_handle(ep->com.dev, &ep->com.dev->stid_idr, ep->stid); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2690 | cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid, PF_INET); |
| 2691 | done: |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2692 | cm_id->rem_ref(cm_id); |
| 2693 | c4iw_put_ep(&ep->com); |
| 2694 | return err; |
| 2695 | } |
| 2696 | |
| 2697 | int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp) |
| 2698 | { |
| 2699 | int ret = 0; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2700 | int close = 0; |
| 2701 | int fatal = 0; |
| 2702 | struct c4iw_rdev *rdev; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2703 | |
Steve Wise | 2f5b48c | 2010-09-10 11:15:36 -0500 | [diff] [blame] | 2704 | mutex_lock(&ep->com.mutex); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2705 | |
| 2706 | PDBG("%s ep %p state %s, abrupt %d\n", __func__, ep, |
| 2707 | states[ep->com.state], abrupt); |
| 2708 | |
| 2709 | rdev = &ep->com.dev->rdev; |
| 2710 | if (c4iw_fatal_error(rdev)) { |
| 2711 | fatal = 1; |
| 2712 | close_complete_upcall(ep); |
| 2713 | ep->com.state = DEAD; |
| 2714 | } |
| 2715 | switch (ep->com.state) { |
| 2716 | case MPA_REQ_WAIT: |
| 2717 | case MPA_REQ_SENT: |
| 2718 | case MPA_REQ_RCVD: |
| 2719 | case MPA_REP_SENT: |
| 2720 | case FPDU_MODE: |
| 2721 | close = 1; |
| 2722 | if (abrupt) |
| 2723 | ep->com.state = ABORTING; |
| 2724 | else { |
| 2725 | ep->com.state = CLOSING; |
Steve Wise | ca5a220 | 2010-07-23 19:12:37 +0000 | [diff] [blame] | 2726 | start_ep_timer(ep); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2727 | } |
| 2728 | set_bit(CLOSE_SENT, &ep->com.flags); |
| 2729 | break; |
| 2730 | case CLOSING: |
| 2731 | if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) { |
| 2732 | close = 1; |
| 2733 | if (abrupt) { |
Steve Wise | ca5a220 | 2010-07-23 19:12:37 +0000 | [diff] [blame] | 2734 | stop_ep_timer(ep); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2735 | ep->com.state = ABORTING; |
| 2736 | } else |
| 2737 | ep->com.state = MORIBUND; |
| 2738 | } |
| 2739 | break; |
| 2740 | case MORIBUND: |
| 2741 | case ABORTING: |
| 2742 | case DEAD: |
| 2743 | PDBG("%s ignoring disconnect ep %p state %u\n", |
| 2744 | __func__, ep, ep->com.state); |
| 2745 | break; |
| 2746 | default: |
| 2747 | BUG(); |
| 2748 | break; |
| 2749 | } |
| 2750 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2751 | if (close) { |
Steve Wise | 8da7e7a | 2011-06-14 20:59:27 +0000 | [diff] [blame] | 2752 | if (abrupt) { |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 2753 | set_bit(EP_DISC_ABORT, &ep->com.history); |
Steve Wise | 8da7e7a | 2011-06-14 20:59:27 +0000 | [diff] [blame] | 2754 | close_complete_upcall(ep); |
| 2755 | ret = send_abort(ep, NULL, gfp); |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 2756 | } else { |
| 2757 | set_bit(EP_DISC_CLOSE, &ep->com.history); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2758 | ret = send_halfclose(ep, gfp); |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 2759 | } |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2760 | if (ret) |
| 2761 | fatal = 1; |
| 2762 | } |
Steve Wise | 8da7e7a | 2011-06-14 20:59:27 +0000 | [diff] [blame] | 2763 | mutex_unlock(&ep->com.mutex); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 2764 | if (fatal) |
| 2765 | release_ep_resources(ep); |
| 2766 | return ret; |
| 2767 | } |
| 2768 | |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 2769 | static void active_ofld_conn_reply(struct c4iw_dev *dev, struct sk_buff *skb, |
| 2770 | struct cpl_fw6_msg_ofld_connection_wr_rpl *req) |
| 2771 | { |
| 2772 | struct c4iw_ep *ep; |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 2773 | int atid = be32_to_cpu(req->tid); |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 2774 | |
| 2775 | ep = (struct c4iw_ep *)lookup_atid(dev->rdev.lldi.tids, req->tid); |
| 2776 | if (!ep) |
| 2777 | return; |
| 2778 | |
| 2779 | switch (req->retval) { |
| 2780 | case FW_ENOMEM: |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 2781 | set_bit(ACT_RETRY_NOMEM, &ep->com.history); |
| 2782 | if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) { |
| 2783 | send_fw_act_open_req(ep, atid); |
| 2784 | return; |
| 2785 | } |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 2786 | case FW_EADDRINUSE: |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 2787 | set_bit(ACT_RETRY_INUSE, &ep->com.history); |
| 2788 | if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) { |
| 2789 | send_fw_act_open_req(ep, atid); |
| 2790 | return; |
| 2791 | } |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 2792 | break; |
| 2793 | default: |
| 2794 | pr_info("%s unexpected ofld conn wr retval %d\n", |
| 2795 | __func__, req->retval); |
| 2796 | break; |
| 2797 | } |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 2798 | pr_err("active ofld_connect_wr failure %d atid %d\n", |
| 2799 | req->retval, atid); |
| 2800 | mutex_lock(&dev->rdev.stats.lock); |
| 2801 | dev->rdev.stats.act_ofld_conn_fails++; |
| 2802 | mutex_unlock(&dev->rdev.stats.lock); |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 2803 | connect_reply_upcall(ep, status2errno(req->retval)); |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 2804 | state_set(&ep->com, DEAD); |
| 2805 | remove_handle(dev, &dev->atid_idr, atid); |
| 2806 | cxgb4_free_atid(dev->rdev.lldi.tids, atid); |
| 2807 | dst_release(ep->dst); |
| 2808 | cxgb4_l2t_release(ep->l2t); |
| 2809 | c4iw_put_ep(&ep->com); |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 2810 | } |
| 2811 | |
| 2812 | static void passive_ofld_conn_reply(struct c4iw_dev *dev, struct sk_buff *skb, |
| 2813 | struct cpl_fw6_msg_ofld_connection_wr_rpl *req) |
| 2814 | { |
| 2815 | struct sk_buff *rpl_skb; |
| 2816 | struct cpl_pass_accept_req *cpl; |
| 2817 | int ret; |
| 2818 | |
| 2819 | rpl_skb = (struct sk_buff *)cpu_to_be64(req->cookie); |
| 2820 | BUG_ON(!rpl_skb); |
| 2821 | if (req->retval) { |
| 2822 | PDBG("%s passive open failure %d\n", __func__, req->retval); |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 2823 | mutex_lock(&dev->rdev.stats.lock); |
| 2824 | dev->rdev.stats.pas_ofld_conn_fails++; |
| 2825 | mutex_unlock(&dev->rdev.stats.lock); |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 2826 | kfree_skb(rpl_skb); |
| 2827 | } else { |
| 2828 | cpl = (struct cpl_pass_accept_req *)cplhdr(rpl_skb); |
| 2829 | OPCODE_TID(cpl) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_REQ, |
| 2830 | htonl(req->tid))); |
| 2831 | ret = pass_accept_req(dev, rpl_skb); |
| 2832 | if (!ret) |
| 2833 | kfree_skb(rpl_skb); |
| 2834 | } |
| 2835 | return; |
| 2836 | } |
| 2837 | |
| 2838 | static int deferred_fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb) |
Steve Wise | 2f5b48c | 2010-09-10 11:15:36 -0500 | [diff] [blame] | 2839 | { |
| 2840 | struct cpl_fw6_msg *rpl = cplhdr(skb); |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 2841 | struct cpl_fw6_msg_ofld_connection_wr_rpl *req; |
| 2842 | |
| 2843 | switch (rpl->type) { |
| 2844 | case FW6_TYPE_CQE: |
| 2845 | c4iw_ev_dispatch(dev, (struct t4_cqe *)&rpl->data[0]); |
| 2846 | break; |
| 2847 | case FW6_TYPE_OFLD_CONNECTION_WR_RPL: |
| 2848 | req = (struct cpl_fw6_msg_ofld_connection_wr_rpl *)rpl->data; |
| 2849 | switch (req->t_state) { |
| 2850 | case TCP_SYN_SENT: |
| 2851 | active_ofld_conn_reply(dev, skb, req); |
| 2852 | break; |
| 2853 | case TCP_SYN_RECV: |
| 2854 | passive_ofld_conn_reply(dev, skb, req); |
| 2855 | break; |
| 2856 | default: |
| 2857 | pr_err("%s unexpected ofld conn wr state %d\n", |
| 2858 | __func__, req->t_state); |
| 2859 | break; |
| 2860 | } |
| 2861 | break; |
| 2862 | } |
| 2863 | return 0; |
| 2864 | } |
| 2865 | |
| 2866 | static void build_cpl_pass_accept_req(struct sk_buff *skb, int stid , u8 tos) |
| 2867 | { |
| 2868 | u32 l2info; |
| 2869 | u16 vlantag, len, hdr_len; |
| 2870 | u8 intf; |
| 2871 | struct cpl_rx_pkt *cpl = cplhdr(skb); |
| 2872 | struct cpl_pass_accept_req *req; |
| 2873 | struct tcp_options_received tmp_opt; |
| 2874 | |
| 2875 | /* Store values from cpl_rx_pkt in temporary location. */ |
| 2876 | vlantag = cpl->vlan; |
| 2877 | len = cpl->len; |
| 2878 | l2info = cpl->l2info; |
| 2879 | hdr_len = cpl->hdr_len; |
| 2880 | intf = cpl->iff; |
| 2881 | |
| 2882 | __skb_pull(skb, sizeof(*req) + sizeof(struct rss_header)); |
| 2883 | |
| 2884 | /* |
| 2885 | * We need to parse the TCP options from SYN packet. |
| 2886 | * to generate cpl_pass_accept_req. |
| 2887 | */ |
| 2888 | memset(&tmp_opt, 0, sizeof(tmp_opt)); |
| 2889 | tcp_clear_options(&tmp_opt); |
| 2890 | tcp_parse_options(skb, &tmp_opt, 0, 0, NULL); |
| 2891 | |
| 2892 | req = (struct cpl_pass_accept_req *)__skb_push(skb, sizeof(*req)); |
| 2893 | memset(req, 0, sizeof(*req)); |
| 2894 | req->l2info = cpu_to_be16(V_SYN_INTF(intf) | |
| 2895 | V_SYN_MAC_IDX(G_RX_MACIDX(htonl(l2info))) | |
| 2896 | F_SYN_XACT_MATCH); |
| 2897 | req->hdr_len = cpu_to_be32(V_SYN_RX_CHAN(G_RX_CHAN(htonl(l2info))) | |
| 2898 | V_TCP_HDR_LEN(G_RX_TCPHDR_LEN(htons(hdr_len))) | |
| 2899 | V_IP_HDR_LEN(G_RX_IPHDR_LEN(htons(hdr_len))) | |
| 2900 | V_ETH_HDR_LEN(G_RX_ETHHDR_LEN(htonl(l2info)))); |
| 2901 | req->vlan = vlantag; |
| 2902 | req->len = len; |
| 2903 | req->tos_stid = cpu_to_be32(PASS_OPEN_TID(stid) | |
| 2904 | PASS_OPEN_TOS(tos)); |
| 2905 | req->tcpopt.mss = htons(tmp_opt.mss_clamp); |
| 2906 | if (tmp_opt.wscale_ok) |
| 2907 | req->tcpopt.wsf = tmp_opt.snd_wscale; |
| 2908 | req->tcpopt.tstamp = tmp_opt.saw_tstamp; |
| 2909 | if (tmp_opt.sack_ok) |
| 2910 | req->tcpopt.sack = 1; |
| 2911 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_REQ, 0)); |
| 2912 | return; |
| 2913 | } |
| 2914 | |
| 2915 | static void send_fw_pass_open_req(struct c4iw_dev *dev, struct sk_buff *skb, |
| 2916 | __be32 laddr, __be16 lport, |
| 2917 | __be32 raddr, __be16 rport, |
| 2918 | u32 rcv_isn, u32 filter, u16 window, |
| 2919 | u32 rss_qid, u8 port_id) |
| 2920 | { |
| 2921 | struct sk_buff *req_skb; |
| 2922 | struct fw_ofld_connection_wr *req; |
| 2923 | struct cpl_pass_accept_req *cpl = cplhdr(skb); |
| 2924 | |
| 2925 | req_skb = alloc_skb(sizeof(struct fw_ofld_connection_wr), GFP_KERNEL); |
| 2926 | req = (struct fw_ofld_connection_wr *)__skb_put(req_skb, sizeof(*req)); |
| 2927 | memset(req, 0, sizeof(*req)); |
| 2928 | req->op_compl = htonl(V_WR_OP(FW_OFLD_CONNECTION_WR) | FW_WR_COMPL(1)); |
| 2929 | req->len16_pkd = htonl(FW_WR_LEN16(DIV_ROUND_UP(sizeof(*req), 16))); |
| 2930 | req->le.version_cpl = htonl(F_FW_OFLD_CONNECTION_WR_CPL); |
| 2931 | req->le.filter = filter; |
| 2932 | req->le.lport = lport; |
| 2933 | req->le.pport = rport; |
| 2934 | req->le.u.ipv4.lip = laddr; |
| 2935 | req->le.u.ipv4.pip = raddr; |
| 2936 | req->tcb.rcv_nxt = htonl(rcv_isn + 1); |
| 2937 | req->tcb.rcv_adv = htons(window); |
| 2938 | req->tcb.t_state_to_astid = |
| 2939 | htonl(V_FW_OFLD_CONNECTION_WR_T_STATE(TCP_SYN_RECV) | |
| 2940 | V_FW_OFLD_CONNECTION_WR_RCV_SCALE(cpl->tcpopt.wsf) | |
| 2941 | V_FW_OFLD_CONNECTION_WR_ASTID( |
| 2942 | GET_PASS_OPEN_TID(ntohl(cpl->tos_stid)))); |
| 2943 | |
| 2944 | /* |
| 2945 | * We store the qid in opt2 which will be used by the firmware |
| 2946 | * to send us the wr response. |
| 2947 | */ |
| 2948 | req->tcb.opt2 = htonl(V_RSS_QUEUE(rss_qid)); |
| 2949 | |
| 2950 | /* |
| 2951 | * We initialize the MSS index in TCB to 0xF. |
| 2952 | * So that when driver sends cpl_pass_accept_rpl |
| 2953 | * TCB picks up the correct value. If this was 0 |
| 2954 | * TP will ignore any value > 0 for MSS index. |
| 2955 | */ |
| 2956 | req->tcb.opt0 = cpu_to_be64(V_MSS_IDX(0xF)); |
| 2957 | req->cookie = cpu_to_be64((u64)skb); |
| 2958 | |
| 2959 | set_wr_txq(req_skb, CPL_PRIORITY_CONTROL, port_id); |
| 2960 | cxgb4_ofld_send(dev->rdev.lldi.ports[0], req_skb); |
| 2961 | } |
| 2962 | |
| 2963 | /* |
| 2964 | * Handler for CPL_RX_PKT message. Need to handle cpl_rx_pkt |
| 2965 | * messages when a filter is being used instead of server to |
| 2966 | * redirect a syn packet. When packets hit filter they are redirected |
| 2967 | * to the offload queue and driver tries to establish the connection |
| 2968 | * using firmware work request. |
| 2969 | */ |
| 2970 | static int rx_pkt(struct c4iw_dev *dev, struct sk_buff *skb) |
| 2971 | { |
| 2972 | int stid; |
| 2973 | unsigned int filter; |
| 2974 | struct ethhdr *eh = NULL; |
| 2975 | struct vlan_ethhdr *vlan_eh = NULL; |
| 2976 | struct iphdr *iph; |
| 2977 | struct tcphdr *tcph; |
| 2978 | struct rss_header *rss = (void *)skb->data; |
| 2979 | struct cpl_rx_pkt *cpl = (void *)skb->data; |
| 2980 | struct cpl_pass_accept_req *req = (void *)(rss + 1); |
| 2981 | struct l2t_entry *e; |
| 2982 | struct dst_entry *dst; |
| 2983 | struct rtable *rt; |
| 2984 | struct c4iw_ep *lep; |
| 2985 | u16 window; |
| 2986 | struct port_info *pi; |
| 2987 | struct net_device *pdev; |
| 2988 | u16 rss_qid; |
| 2989 | int step; |
| 2990 | u32 tx_chan; |
| 2991 | struct neighbour *neigh; |
| 2992 | |
| 2993 | /* Drop all non-SYN packets */ |
| 2994 | if (!(cpl->l2info & cpu_to_be32(F_RXF_SYN))) |
| 2995 | goto reject; |
| 2996 | |
| 2997 | /* |
| 2998 | * Drop all packets which did not hit the filter. |
| 2999 | * Unlikely to happen. |
| 3000 | */ |
| 3001 | if (!(rss->filter_hit && rss->filter_tid)) |
| 3002 | goto reject; |
| 3003 | |
| 3004 | /* |
| 3005 | * Calculate the server tid from filter hit index from cpl_rx_pkt. |
| 3006 | */ |
| 3007 | stid = cpu_to_be32(rss->hash_val) - dev->rdev.lldi.tids->sftid_base |
| 3008 | + dev->rdev.lldi.tids->nstids; |
| 3009 | |
| 3010 | lep = (struct c4iw_ep *)lookup_stid(dev->rdev.lldi.tids, stid); |
| 3011 | if (!lep) { |
| 3012 | PDBG("%s connect request on invalid stid %d\n", __func__, stid); |
| 3013 | goto reject; |
| 3014 | } |
| 3015 | |
| 3016 | if (G_RX_ETHHDR_LEN(ntohl(cpl->l2info)) == ETH_HLEN) { |
| 3017 | eh = (struct ethhdr *)(req + 1); |
| 3018 | iph = (struct iphdr *)(eh + 1); |
| 3019 | } else { |
| 3020 | vlan_eh = (struct vlan_ethhdr *)(req + 1); |
| 3021 | iph = (struct iphdr *)(vlan_eh + 1); |
| 3022 | skb->vlan_tci = ntohs(cpl->vlan); |
| 3023 | } |
| 3024 | |
| 3025 | if (iph->version != 0x4) |
| 3026 | goto reject; |
| 3027 | |
| 3028 | tcph = (struct tcphdr *)(iph + 1); |
| 3029 | skb_set_network_header(skb, (void *)iph - (void *)rss); |
| 3030 | skb_set_transport_header(skb, (void *)tcph - (void *)rss); |
| 3031 | skb_get(skb); |
| 3032 | |
| 3033 | PDBG("%s lip 0x%x lport %u pip 0x%x pport %u tos %d\n", __func__, |
| 3034 | ntohl(iph->daddr), ntohs(tcph->dest), ntohl(iph->saddr), |
| 3035 | ntohs(tcph->source), iph->tos); |
| 3036 | |
| 3037 | rt = find_route(dev, iph->daddr, iph->saddr, tcph->dest, tcph->source, |
| 3038 | iph->tos); |
| 3039 | if (!rt) { |
| 3040 | pr_err("%s - failed to find dst entry!\n", |
| 3041 | __func__); |
| 3042 | goto reject; |
| 3043 | } |
| 3044 | dst = &rt->dst; |
| 3045 | neigh = dst_neigh_lookup_skb(dst, skb); |
| 3046 | |
| 3047 | if (neigh->dev->flags & IFF_LOOPBACK) { |
| 3048 | pdev = ip_dev_find(&init_net, iph->daddr); |
| 3049 | e = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh, |
| 3050 | pdev, 0); |
| 3051 | pi = (struct port_info *)netdev_priv(pdev); |
| 3052 | tx_chan = cxgb4_port_chan(pdev); |
| 3053 | dev_put(pdev); |
| 3054 | } else { |
| 3055 | e = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh, |
| 3056 | neigh->dev, 0); |
| 3057 | pi = (struct port_info *)netdev_priv(neigh->dev); |
| 3058 | tx_chan = cxgb4_port_chan(neigh->dev); |
| 3059 | } |
| 3060 | if (!e) { |
| 3061 | pr_err("%s - failed to allocate l2t entry!\n", |
| 3062 | __func__); |
| 3063 | goto free_dst; |
| 3064 | } |
| 3065 | |
| 3066 | step = dev->rdev.lldi.nrxq / dev->rdev.lldi.nchan; |
| 3067 | rss_qid = dev->rdev.lldi.rxq_ids[pi->port_id * step]; |
| 3068 | window = htons(tcph->window); |
| 3069 | |
| 3070 | /* Calcuate filter portion for LE region. */ |
| 3071 | filter = cpu_to_be32(select_ntuple(dev, dst, e)); |
| 3072 | |
| 3073 | /* |
| 3074 | * Synthesize the cpl_pass_accept_req. We have everything except the |
| 3075 | * TID. Once firmware sends a reply with TID we update the TID field |
| 3076 | * in cpl and pass it through the regular cpl_pass_accept_req path. |
| 3077 | */ |
| 3078 | build_cpl_pass_accept_req(skb, stid, iph->tos); |
| 3079 | send_fw_pass_open_req(dev, skb, iph->daddr, tcph->dest, iph->saddr, |
| 3080 | tcph->source, ntohl(tcph->seq), filter, window, |
| 3081 | rss_qid, pi->port_id); |
| 3082 | cxgb4_l2t_release(e); |
| 3083 | free_dst: |
| 3084 | dst_release(dst); |
| 3085 | reject: |
Steve Wise | 2f5b48c | 2010-09-10 11:15:36 -0500 | [diff] [blame] | 3086 | return 0; |
| 3087 | } |
| 3088 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 3089 | /* |
Roland Dreier | be4c9ba | 2010-05-05 14:45:40 -0700 | [diff] [blame] | 3090 | * These are the real handlers that are called from a |
| 3091 | * work queue. |
| 3092 | */ |
| 3093 | static c4iw_handler_func work_handlers[NUM_CPL_CMDS] = { |
| 3094 | [CPL_ACT_ESTABLISH] = act_establish, |
| 3095 | [CPL_ACT_OPEN_RPL] = act_open_rpl, |
| 3096 | [CPL_RX_DATA] = rx_data, |
| 3097 | [CPL_ABORT_RPL_RSS] = abort_rpl, |
| 3098 | [CPL_ABORT_RPL] = abort_rpl, |
| 3099 | [CPL_PASS_OPEN_RPL] = pass_open_rpl, |
| 3100 | [CPL_CLOSE_LISTSRV_RPL] = close_listsrv_rpl, |
| 3101 | [CPL_PASS_ACCEPT_REQ] = pass_accept_req, |
| 3102 | [CPL_PASS_ESTABLISH] = pass_establish, |
| 3103 | [CPL_PEER_CLOSE] = peer_close, |
| 3104 | [CPL_ABORT_REQ_RSS] = peer_abort, |
| 3105 | [CPL_CLOSE_CON_RPL] = close_con_rpl, |
| 3106 | [CPL_RDMA_TERMINATE] = terminate, |
Steve Wise | 2f5b48c | 2010-09-10 11:15:36 -0500 | [diff] [blame] | 3107 | [CPL_FW4_ACK] = fw4_ack, |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 3108 | [CPL_FW6_MSG] = deferred_fw6_msg, |
| 3109 | [CPL_RX_PKT] = rx_pkt |
Roland Dreier | be4c9ba | 2010-05-05 14:45:40 -0700 | [diff] [blame] | 3110 | }; |
| 3111 | |
| 3112 | static void process_timeout(struct c4iw_ep *ep) |
| 3113 | { |
| 3114 | struct c4iw_qp_attributes attrs; |
| 3115 | int abort = 1; |
| 3116 | |
Steve Wise | 2f5b48c | 2010-09-10 11:15:36 -0500 | [diff] [blame] | 3117 | mutex_lock(&ep->com.mutex); |
Roland Dreier | be4c9ba | 2010-05-05 14:45:40 -0700 | [diff] [blame] | 3118 | PDBG("%s ep %p tid %u state %d\n", __func__, ep, ep->hwtid, |
| 3119 | ep->com.state); |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 3120 | set_bit(TIMEDOUT, &ep->com.history); |
Roland Dreier | be4c9ba | 2010-05-05 14:45:40 -0700 | [diff] [blame] | 3121 | switch (ep->com.state) { |
| 3122 | case MPA_REQ_SENT: |
| 3123 | __state_set(&ep->com, ABORTING); |
| 3124 | connect_reply_upcall(ep, -ETIMEDOUT); |
| 3125 | break; |
| 3126 | case MPA_REQ_WAIT: |
| 3127 | __state_set(&ep->com, ABORTING); |
| 3128 | break; |
| 3129 | case CLOSING: |
| 3130 | case MORIBUND: |
| 3131 | if (ep->com.cm_id && ep->com.qp) { |
| 3132 | attrs.next_state = C4IW_QP_STATE_ERROR; |
| 3133 | c4iw_modify_qp(ep->com.qp->rhp, |
| 3134 | ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, |
| 3135 | &attrs, 1); |
| 3136 | } |
| 3137 | __state_set(&ep->com, ABORTING); |
| 3138 | break; |
| 3139 | default: |
Julia Lawall | 76f267b | 2012-11-03 10:58:27 +0000 | [diff] [blame] | 3140 | WARN(1, "%s unexpected state ep %p tid %u state %u\n", |
Roland Dreier | be4c9ba | 2010-05-05 14:45:40 -0700 | [diff] [blame] | 3141 | __func__, ep, ep->hwtid, ep->com.state); |
Roland Dreier | be4c9ba | 2010-05-05 14:45:40 -0700 | [diff] [blame] | 3142 | abort = 0; |
| 3143 | } |
Steve Wise | 2f5b48c | 2010-09-10 11:15:36 -0500 | [diff] [blame] | 3144 | mutex_unlock(&ep->com.mutex); |
Roland Dreier | be4c9ba | 2010-05-05 14:45:40 -0700 | [diff] [blame] | 3145 | if (abort) |
| 3146 | abort_connection(ep, NULL, GFP_KERNEL); |
| 3147 | c4iw_put_ep(&ep->com); |
| 3148 | } |
| 3149 | |
| 3150 | static void process_timedout_eps(void) |
| 3151 | { |
| 3152 | struct c4iw_ep *ep; |
| 3153 | |
| 3154 | spin_lock_irq(&timeout_lock); |
| 3155 | while (!list_empty(&timeout_list)) { |
| 3156 | struct list_head *tmp; |
| 3157 | |
| 3158 | tmp = timeout_list.next; |
| 3159 | list_del(tmp); |
| 3160 | spin_unlock_irq(&timeout_lock); |
| 3161 | ep = list_entry(tmp, struct c4iw_ep, entry); |
| 3162 | process_timeout(ep); |
| 3163 | spin_lock_irq(&timeout_lock); |
| 3164 | } |
| 3165 | spin_unlock_irq(&timeout_lock); |
| 3166 | } |
| 3167 | |
| 3168 | static void process_work(struct work_struct *work) |
| 3169 | { |
| 3170 | struct sk_buff *skb = NULL; |
| 3171 | struct c4iw_dev *dev; |
Dan Carpenter | c1d7356 | 2010-05-31 14:00:53 +0000 | [diff] [blame] | 3172 | struct cpl_act_establish *rpl; |
Roland Dreier | be4c9ba | 2010-05-05 14:45:40 -0700 | [diff] [blame] | 3173 | unsigned int opcode; |
| 3174 | int ret; |
| 3175 | |
| 3176 | while ((skb = skb_dequeue(&rxq))) { |
| 3177 | rpl = cplhdr(skb); |
| 3178 | dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *))); |
| 3179 | opcode = rpl->ot.opcode; |
| 3180 | |
| 3181 | BUG_ON(!work_handlers[opcode]); |
| 3182 | ret = work_handlers[opcode](dev, skb); |
| 3183 | if (!ret) |
| 3184 | kfree_skb(skb); |
| 3185 | } |
| 3186 | process_timedout_eps(); |
| 3187 | } |
| 3188 | |
| 3189 | static DECLARE_WORK(skb_work, process_work); |
| 3190 | |
| 3191 | static void ep_timeout(unsigned long arg) |
| 3192 | { |
| 3193 | struct c4iw_ep *ep = (struct c4iw_ep *)arg; |
| 3194 | |
| 3195 | spin_lock(&timeout_lock); |
| 3196 | list_add_tail(&ep->entry, &timeout_list); |
| 3197 | spin_unlock(&timeout_lock); |
| 3198 | queue_work(workq, &skb_work); |
| 3199 | } |
| 3200 | |
| 3201 | /* |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 3202 | * All the CM events are handled on a work queue to have a safe context. |
| 3203 | */ |
| 3204 | static int sched(struct c4iw_dev *dev, struct sk_buff *skb) |
| 3205 | { |
| 3206 | |
| 3207 | /* |
| 3208 | * Save dev in the skb->cb area. |
| 3209 | */ |
| 3210 | *((struct c4iw_dev **) (skb->cb + sizeof(void *))) = dev; |
| 3211 | |
| 3212 | /* |
| 3213 | * Queue the skb and schedule the worker thread. |
| 3214 | */ |
| 3215 | skb_queue_tail(&rxq, skb); |
| 3216 | queue_work(workq, &skb_work); |
| 3217 | return 0; |
| 3218 | } |
| 3219 | |
| 3220 | static int set_tcb_rpl(struct c4iw_dev *dev, struct sk_buff *skb) |
| 3221 | { |
| 3222 | struct cpl_set_tcb_rpl *rpl = cplhdr(skb); |
| 3223 | |
| 3224 | if (rpl->status != CPL_ERR_NONE) { |
| 3225 | printk(KERN_ERR MOD "Unexpected SET_TCB_RPL status %u " |
| 3226 | "for tid %u\n", rpl->status, GET_TID(rpl)); |
| 3227 | } |
Steve Wise | 2f5b48c | 2010-09-10 11:15:36 -0500 | [diff] [blame] | 3228 | kfree_skb(skb); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 3229 | return 0; |
| 3230 | } |
| 3231 | |
Roland Dreier | be4c9ba | 2010-05-05 14:45:40 -0700 | [diff] [blame] | 3232 | static int fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb) |
| 3233 | { |
| 3234 | struct cpl_fw6_msg *rpl = cplhdr(skb); |
| 3235 | struct c4iw_wr_wait *wr_waitp; |
| 3236 | int ret; |
| 3237 | |
| 3238 | PDBG("%s type %u\n", __func__, rpl->type); |
| 3239 | |
| 3240 | switch (rpl->type) { |
Vipul Pandya | 5be78ee | 2012-12-10 09:30:54 +0000 | [diff] [blame] | 3241 | case FW6_TYPE_WR_RPL: |
Roland Dreier | be4c9ba | 2010-05-05 14:45:40 -0700 | [diff] [blame] | 3242 | ret = (int)((be64_to_cpu(rpl->data[0]) >> 8) & 0xff); |
Roland Dreier | c8e081a | 2010-09-27 17:51:04 -0700 | [diff] [blame] | 3243 | wr_waitp = (struct c4iw_wr_wait *)(__force unsigned long) rpl->data[1]; |
Roland Dreier | be4c9ba | 2010-05-05 14:45:40 -0700 | [diff] [blame] | 3244 | PDBG("%s wr_waitp %p ret %u\n", __func__, wr_waitp, ret); |
Steve Wise | d9594d9 | 2011-05-09 22:06:22 -0700 | [diff] [blame] | 3245 | if (wr_waitp) |
| 3246 | c4iw_wake_up(wr_waitp, ret ? -ret : 0); |
Steve Wise | 2f5b48c | 2010-09-10 11:15:36 -0500 | [diff] [blame] | 3247 | kfree_skb(skb); |
Roland Dreier | be4c9ba | 2010-05-05 14:45:40 -0700 | [diff] [blame] | 3248 | break; |
Vipul Pandya | 5be78ee | 2012-12-10 09:30:54 +0000 | [diff] [blame] | 3249 | case FW6_TYPE_CQE: |
Vipul Pandya | 5be78ee | 2012-12-10 09:30:54 +0000 | [diff] [blame] | 3250 | case FW6_TYPE_OFLD_CONNECTION_WR_RPL: |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 3251 | sched(dev, skb); |
Vipul Pandya | 5be78ee | 2012-12-10 09:30:54 +0000 | [diff] [blame] | 3252 | break; |
Roland Dreier | be4c9ba | 2010-05-05 14:45:40 -0700 | [diff] [blame] | 3253 | default: |
| 3254 | printk(KERN_ERR MOD "%s unexpected fw6 msg type %u\n", __func__, |
| 3255 | rpl->type); |
Steve Wise | 2f5b48c | 2010-09-10 11:15:36 -0500 | [diff] [blame] | 3256 | kfree_skb(skb); |
Roland Dreier | be4c9ba | 2010-05-05 14:45:40 -0700 | [diff] [blame] | 3257 | break; |
| 3258 | } |
| 3259 | return 0; |
| 3260 | } |
| 3261 | |
Steve Wise | 8da7e7a | 2011-06-14 20:59:27 +0000 | [diff] [blame] | 3262 | static int peer_abort_intr(struct c4iw_dev *dev, struct sk_buff *skb) |
| 3263 | { |
| 3264 | struct cpl_abort_req_rss *req = cplhdr(skb); |
| 3265 | struct c4iw_ep *ep; |
| 3266 | struct tid_info *t = dev->rdev.lldi.tids; |
| 3267 | unsigned int tid = GET_TID(req); |
| 3268 | |
| 3269 | ep = lookup_tid(t, tid); |
Steve Wise | 14b9222 | 2012-04-30 15:31:29 -0500 | [diff] [blame] | 3270 | if (!ep) { |
| 3271 | printk(KERN_WARNING MOD |
| 3272 | "Abort on non-existent endpoint, tid %d\n", tid); |
| 3273 | kfree_skb(skb); |
| 3274 | return 0; |
| 3275 | } |
Steve Wise | 8da7e7a | 2011-06-14 20:59:27 +0000 | [diff] [blame] | 3276 | if (is_neg_adv_abort(req->status)) { |
| 3277 | PDBG("%s neg_adv_abort ep %p tid %u\n", __func__, ep, |
| 3278 | ep->hwtid); |
| 3279 | kfree_skb(skb); |
| 3280 | return 0; |
| 3281 | } |
| 3282 | PDBG("%s ep %p tid %u state %u\n", __func__, ep, ep->hwtid, |
| 3283 | ep->com.state); |
| 3284 | |
| 3285 | /* |
| 3286 | * Wake up any threads in rdma_init() or rdma_fini(). |
| 3287 | */ |
Steve Wise | 0f1dcfa | 2012-04-27 09:59:16 -0500 | [diff] [blame] | 3288 | c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); |
Steve Wise | 8da7e7a | 2011-06-14 20:59:27 +0000 | [diff] [blame] | 3289 | sched(dev, skb); |
| 3290 | return 0; |
| 3291 | } |
| 3292 | |
Roland Dreier | be4c9ba | 2010-05-05 14:45:40 -0700 | [diff] [blame] | 3293 | /* |
| 3294 | * Most upcalls from the T4 Core go to sched() to |
| 3295 | * schedule the processing on a work queue. |
| 3296 | */ |
| 3297 | c4iw_handler_func c4iw_handlers[NUM_CPL_CMDS] = { |
| 3298 | [CPL_ACT_ESTABLISH] = sched, |
| 3299 | [CPL_ACT_OPEN_RPL] = sched, |
| 3300 | [CPL_RX_DATA] = sched, |
| 3301 | [CPL_ABORT_RPL_RSS] = sched, |
| 3302 | [CPL_ABORT_RPL] = sched, |
| 3303 | [CPL_PASS_OPEN_RPL] = sched, |
| 3304 | [CPL_CLOSE_LISTSRV_RPL] = sched, |
| 3305 | [CPL_PASS_ACCEPT_REQ] = sched, |
| 3306 | [CPL_PASS_ESTABLISH] = sched, |
| 3307 | [CPL_PEER_CLOSE] = sched, |
| 3308 | [CPL_CLOSE_CON_RPL] = sched, |
Steve Wise | 8da7e7a | 2011-06-14 20:59:27 +0000 | [diff] [blame] | 3309 | [CPL_ABORT_REQ_RSS] = peer_abort_intr, |
Roland Dreier | be4c9ba | 2010-05-05 14:45:40 -0700 | [diff] [blame] | 3310 | [CPL_RDMA_TERMINATE] = sched, |
| 3311 | [CPL_FW4_ACK] = sched, |
| 3312 | [CPL_SET_TCB_RPL] = set_tcb_rpl, |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 3313 | [CPL_FW6_MSG] = fw6_msg, |
| 3314 | [CPL_RX_PKT] = sched |
Roland Dreier | be4c9ba | 2010-05-05 14:45:40 -0700 | [diff] [blame] | 3315 | }; |
| 3316 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 3317 | int __init c4iw_cm_init(void) |
| 3318 | { |
Roland Dreier | be4c9ba | 2010-05-05 14:45:40 -0700 | [diff] [blame] | 3319 | spin_lock_init(&timeout_lock); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 3320 | skb_queue_head_init(&rxq); |
| 3321 | |
| 3322 | workq = create_singlethread_workqueue("iw_cxgb4"); |
| 3323 | if (!workq) |
| 3324 | return -ENOMEM; |
| 3325 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 3326 | return 0; |
| 3327 | } |
| 3328 | |
| 3329 | void __exit c4iw_cm_term(void) |
| 3330 | { |
Roland Dreier | be4c9ba | 2010-05-05 14:45:40 -0700 | [diff] [blame] | 3331 | WARN_ON(!list_empty(&timeout_list)); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 3332 | flush_workqueue(workq); |
| 3333 | destroy_workqueue(workq); |
| 3334 | } |