Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2006 Chelsio, Inc. All rights reserved. |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 3 | * |
| 4 | * This software is available to you under a choice of one of two |
| 5 | * licenses. You may choose to be licensed under the terms of the GNU |
| 6 | * General Public License (GPL) Version 2, available from the file |
| 7 | * COPYING in the main directory of this source tree, or the |
| 8 | * OpenIB.org BSD license below: |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or |
| 11 | * without modification, are permitted provided that the following |
| 12 | * conditions are met: |
| 13 | * |
| 14 | * - Redistributions of source code must retain the above |
| 15 | * copyright notice, this list of conditions and the following |
| 16 | * disclaimer. |
| 17 | * |
| 18 | * - Redistributions in binary form must reproduce the above |
| 19 | * copyright notice, this list of conditions and the following |
| 20 | * disclaimer in the documentation and/or other materials |
| 21 | * provided with the distribution. |
| 22 | * |
| 23 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 24 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 25 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 26 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 27 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 28 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 29 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 30 | * SOFTWARE. |
| 31 | */ |
| 32 | #ifndef _IWCH_CM_H_ |
| 33 | #define _IWCH_CM_H_ |
| 34 | |
| 35 | #include <linux/inet.h> |
| 36 | #include <linux/wait.h> |
| 37 | #include <linux/spinlock.h> |
| 38 | #include <linux/kref.h> |
| 39 | |
| 40 | #include <rdma/ib_verbs.h> |
| 41 | #include <rdma/iw_cm.h> |
| 42 | |
| 43 | #include "cxgb3_offload.h" |
| 44 | #include "iwch_provider.h" |
| 45 | |
| 46 | #define MPA_KEY_REQ "MPA ID Req Frame" |
| 47 | #define MPA_KEY_REP "MPA ID Rep Frame" |
| 48 | |
| 49 | #define MPA_MAX_PRIVATE_DATA 256 |
| 50 | #define MPA_REV 0 /* XXX - amso1100 uses rev 0 ! */ |
| 51 | #define MPA_REJECT 0x20 |
| 52 | #define MPA_CRC 0x40 |
| 53 | #define MPA_MARKERS 0x80 |
| 54 | #define MPA_FLAGS_MASK 0xE0 |
| 55 | |
| 56 | #define put_ep(ep) { \ |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 57 | PDBG("put_ep (via %s:%u) ep %p refcnt %d\n", __func__, __LINE__, \ |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 58 | ep, atomic_read(&((ep)->kref.refcount))); \ |
Steve Wise | 989a178 | 2008-04-29 13:46:51 -0700 | [diff] [blame] | 59 | WARN_ON(atomic_read(&((ep)->kref.refcount)) < 1); \ |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 60 | kref_put(&((ep)->kref), __free_ep); \ |
| 61 | } |
| 62 | |
| 63 | #define get_ep(ep) { \ |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 64 | PDBG("get_ep (via %s:%u) ep %p, refcnt %d\n", __func__, __LINE__, \ |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 65 | ep, atomic_read(&((ep)->kref.refcount))); \ |
| 66 | kref_get(&((ep)->kref)); \ |
| 67 | } |
| 68 | |
| 69 | struct mpa_message { |
| 70 | u8 key[16]; |
| 71 | u8 flags; |
| 72 | u8 revision; |
| 73 | __be16 private_data_size; |
| 74 | u8 private_data[0]; |
| 75 | }; |
| 76 | |
| 77 | struct terminate_message { |
| 78 | u8 layer_etype; |
| 79 | u8 ecode; |
| 80 | __be16 hdrct_rsvd; |
| 81 | u8 len_hdrs[0]; |
| 82 | }; |
| 83 | |
| 84 | #define TERM_MAX_LENGTH (sizeof(struct terminate_message) + 2 + 18 + 28) |
| 85 | |
| 86 | enum iwch_layers_types { |
| 87 | LAYER_RDMAP = 0x00, |
| 88 | LAYER_DDP = 0x10, |
| 89 | LAYER_MPA = 0x20, |
| 90 | RDMAP_LOCAL_CATA = 0x00, |
| 91 | RDMAP_REMOTE_PROT = 0x01, |
| 92 | RDMAP_REMOTE_OP = 0x02, |
| 93 | DDP_LOCAL_CATA = 0x00, |
| 94 | DDP_TAGGED_ERR = 0x01, |
| 95 | DDP_UNTAGGED_ERR = 0x02, |
| 96 | DDP_LLP = 0x03 |
| 97 | }; |
| 98 | |
| 99 | enum iwch_rdma_ecodes { |
| 100 | RDMAP_INV_STAG = 0x00, |
| 101 | RDMAP_BASE_BOUNDS = 0x01, |
| 102 | RDMAP_ACC_VIOL = 0x02, |
| 103 | RDMAP_STAG_NOT_ASSOC = 0x03, |
| 104 | RDMAP_TO_WRAP = 0x04, |
| 105 | RDMAP_INV_VERS = 0x05, |
| 106 | RDMAP_INV_OPCODE = 0x06, |
| 107 | RDMAP_STREAM_CATA = 0x07, |
| 108 | RDMAP_GLOBAL_CATA = 0x08, |
| 109 | RDMAP_CANT_INV_STAG = 0x09, |
| 110 | RDMAP_UNSPECIFIED = 0xff |
| 111 | }; |
| 112 | |
| 113 | enum iwch_ddp_ecodes { |
| 114 | DDPT_INV_STAG = 0x00, |
| 115 | DDPT_BASE_BOUNDS = 0x01, |
| 116 | DDPT_STAG_NOT_ASSOC = 0x02, |
| 117 | DDPT_TO_WRAP = 0x03, |
| 118 | DDPT_INV_VERS = 0x04, |
| 119 | DDPU_INV_QN = 0x01, |
| 120 | DDPU_INV_MSN_NOBUF = 0x02, |
| 121 | DDPU_INV_MSN_RANGE = 0x03, |
| 122 | DDPU_INV_MO = 0x04, |
| 123 | DDPU_MSG_TOOBIG = 0x05, |
| 124 | DDPU_INV_VERS = 0x06 |
| 125 | }; |
| 126 | |
| 127 | enum iwch_mpa_ecodes { |
| 128 | MPA_CRC_ERR = 0x02, |
| 129 | MPA_MARKER_ERR = 0x03 |
| 130 | }; |
| 131 | |
| 132 | enum iwch_ep_state { |
| 133 | IDLE = 0, |
| 134 | LISTEN, |
| 135 | CONNECTING, |
| 136 | MPA_REQ_WAIT, |
| 137 | MPA_REQ_SENT, |
| 138 | MPA_REQ_RCVD, |
| 139 | MPA_REP_SENT, |
| 140 | FPDU_MODE, |
| 141 | ABORTING, |
| 142 | CLOSING, |
| 143 | MORIBUND, |
| 144 | DEAD, |
| 145 | }; |
| 146 | |
Steve Wise | aff9e39 | 2007-04-26 15:21:20 -0500 | [diff] [blame] | 147 | enum iwch_ep_flags { |
Steve Wise | 6e47fe4 | 2009-09-05 20:22:38 -0700 | [diff] [blame] | 148 | PEER_ABORT_IN_PROGRESS = 0, |
| 149 | ABORT_REQ_IN_PROGRESS = 1, |
| 150 | RELEASE_RESOURCES = 2, |
| 151 | CLOSE_SENT = 3, |
Steve Wise | aff9e39 | 2007-04-26 15:21:20 -0500 | [diff] [blame] | 152 | }; |
| 153 | |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 154 | struct iwch_ep_common { |
| 155 | struct iw_cm_id *cm_id; |
| 156 | struct iwch_qp *qp; |
| 157 | struct t3cdev *tdev; |
| 158 | enum iwch_ep_state state; |
| 159 | struct kref kref; |
| 160 | spinlock_t lock; |
| 161 | struct sockaddr_in local_addr; |
| 162 | struct sockaddr_in remote_addr; |
| 163 | wait_queue_head_t waitq; |
| 164 | int rpl_done; |
| 165 | int rpl_err; |
Steve Wise | 6e47fe4 | 2009-09-05 20:22:38 -0700 | [diff] [blame] | 166 | unsigned long flags; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 167 | }; |
| 168 | |
| 169 | struct iwch_listen_ep { |
| 170 | struct iwch_ep_common com; |
| 171 | unsigned int stid; |
| 172 | int backlog; |
| 173 | }; |
| 174 | |
| 175 | struct iwch_ep { |
| 176 | struct iwch_ep_common com; |
| 177 | struct iwch_ep *parent_ep; |
| 178 | struct timer_list timer; |
| 179 | unsigned int atid; |
| 180 | u32 hwtid; |
| 181 | u32 snd_seq; |
Steve Wise | de3d353 | 2007-05-14 13:27:27 -0500 | [diff] [blame] | 182 | u32 rcv_seq; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 183 | struct l2t_entry *l2t; |
| 184 | struct dst_entry *dst; |
| 185 | struct sk_buff *mpa_skb; |
| 186 | struct iwch_mpa_attributes mpa_attr; |
| 187 | unsigned int mpa_pkt_len; |
| 188 | u8 mpa_pkt[sizeof(struct mpa_message) + MPA_MAX_PRIVATE_DATA]; |
| 189 | u8 tos; |
| 190 | u16 emss; |
| 191 | u16 plen; |
| 192 | u32 ird; |
| 193 | u32 ord; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 194 | }; |
| 195 | |
| 196 | static inline struct iwch_ep *to_ep(struct iw_cm_id *cm_id) |
| 197 | { |
| 198 | return cm_id->provider_data; |
| 199 | } |
| 200 | |
| 201 | static inline struct iwch_listen_ep *to_listen_ep(struct iw_cm_id *cm_id) |
| 202 | { |
| 203 | return cm_id->provider_data; |
| 204 | } |
| 205 | |
| 206 | static inline int compute_wscale(int win) |
| 207 | { |
| 208 | int wscale = 0; |
| 209 | |
| 210 | while (wscale < 14 && (65535<<wscale) < win) |
| 211 | wscale++; |
| 212 | return wscale; |
| 213 | } |
| 214 | |
| 215 | /* CM prototypes */ |
| 216 | |
| 217 | int iwch_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param); |
| 218 | int iwch_create_listen(struct iw_cm_id *cm_id, int backlog); |
| 219 | int iwch_destroy_listen(struct iw_cm_id *cm_id); |
| 220 | int iwch_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len); |
| 221 | int iwch_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param); |
| 222 | int iwch_ep_disconnect(struct iwch_ep *ep, int abrupt, gfp_t gfp); |
| 223 | int iwch_quiesce_tid(struct iwch_ep *ep); |
| 224 | int iwch_resume_tid(struct iwch_ep *ep); |
| 225 | void __free_ep(struct kref *kref); |
| 226 | void iwch_rearp(struct iwch_ep *ep); |
| 227 | int iwch_ep_redirect(void *ctx, struct dst_entry *old, struct dst_entry *new, struct l2t_entry *l2t); |
| 228 | |
| 229 | int __init iwch_cm_init(void); |
| 230 | void __exit iwch_cm_term(void); |
Steve Wise | f8b0dfd | 2008-04-29 13:46:52 -0700 | [diff] [blame] | 231 | extern int peer2peer; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 232 | |
| 233 | #endif /* _IWCH_CM_H_ */ |