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 | #include <linux/module.h> |
| 33 | #include <linux/list.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 34 | #include <linux/slab.h> |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 35 | #include <linux/workqueue.h> |
| 36 | #include <linux/skbuff.h> |
| 37 | #include <linux/timer.h> |
| 38 | #include <linux/notifier.h> |
Steve Wise | 8704e9a | 2008-02-12 16:09:29 -0600 | [diff] [blame] | 39 | #include <linux/inetdevice.h> |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 40 | |
| 41 | #include <net/neighbour.h> |
| 42 | #include <net/netevent.h> |
| 43 | #include <net/route.h> |
| 44 | |
| 45 | #include "tcb.h" |
| 46 | #include "cxgb3_offload.h" |
| 47 | #include "iwch.h" |
| 48 | #include "iwch_provider.h" |
| 49 | #include "iwch_cm.h" |
| 50 | |
| 51 | static char *states[] = { |
| 52 | "idle", |
| 53 | "listen", |
| 54 | "connecting", |
| 55 | "mpa_wait_req", |
| 56 | "mpa_req_sent", |
| 57 | "mpa_req_rcvd", |
| 58 | "mpa_rep_sent", |
| 59 | "fpdu_mode", |
| 60 | "aborting", |
| 61 | "closing", |
| 62 | "moribund", |
| 63 | "dead", |
| 64 | NULL, |
| 65 | }; |
| 66 | |
Steve Wise | f8b0dfd | 2008-04-29 13:46:52 -0700 | [diff] [blame] | 67 | int peer2peer = 0; |
| 68 | module_param(peer2peer, int, 0644); |
| 69 | MODULE_PARM_DESC(peer2peer, "Support peer2peer ULPs (default=0)"); |
| 70 | |
Steve Wise | 77a8d57 | 2008-05-02 10:57:09 -0700 | [diff] [blame] | 71 | static int ep_timeout_secs = 60; |
Steve Wise | e54664c | 2007-07-29 15:12:26 -0500 | [diff] [blame] | 72 | module_param(ep_timeout_secs, int, 0644); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 73 | MODULE_PARM_DESC(ep_timeout_secs, "CM Endpoint operation timeout " |
Steve Wise | 77a8d57 | 2008-05-02 10:57:09 -0700 | [diff] [blame] | 74 | "in seconds (default=60)"); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 75 | |
| 76 | static int mpa_rev = 1; |
Steve Wise | e54664c | 2007-07-29 15:12:26 -0500 | [diff] [blame] | 77 | module_param(mpa_rev, int, 0644); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 78 | MODULE_PARM_DESC(mpa_rev, "MPA Revision, 0 supports amso1100, " |
| 79 | "1 is spec compliant. (default=1)"); |
| 80 | |
| 81 | static int markers_enabled = 0; |
Steve Wise | e54664c | 2007-07-29 15:12:26 -0500 | [diff] [blame] | 82 | module_param(markers_enabled, int, 0644); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 83 | MODULE_PARM_DESC(markers_enabled, "Enable MPA MARKERS (default(0)=disabled)"); |
| 84 | |
| 85 | static int crc_enabled = 1; |
Steve Wise | e54664c | 2007-07-29 15:12:26 -0500 | [diff] [blame] | 86 | module_param(crc_enabled, int, 0644); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 87 | MODULE_PARM_DESC(crc_enabled, "Enable MPA CRC (default(1)=enabled)"); |
| 88 | |
| 89 | static int rcv_win = 256 * 1024; |
Steve Wise | e54664c | 2007-07-29 15:12:26 -0500 | [diff] [blame] | 90 | module_param(rcv_win, int, 0644); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 91 | MODULE_PARM_DESC(rcv_win, "TCP receive window in bytes (default=256)"); |
| 92 | |
| 93 | static int snd_win = 32 * 1024; |
Steve Wise | e54664c | 2007-07-29 15:12:26 -0500 | [diff] [blame] | 94 | module_param(snd_win, int, 0644); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 95 | MODULE_PARM_DESC(snd_win, "TCP send window in bytes (default=32KB)"); |
| 96 | |
| 97 | static unsigned int nocong = 0; |
Steve Wise | e54664c | 2007-07-29 15:12:26 -0500 | [diff] [blame] | 98 | module_param(nocong, uint, 0644); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 99 | MODULE_PARM_DESC(nocong, "Turn off congestion control (default=0)"); |
| 100 | |
| 101 | static unsigned int cong_flavor = 1; |
Steve Wise | e54664c | 2007-07-29 15:12:26 -0500 | [diff] [blame] | 102 | module_param(cong_flavor, uint, 0644); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 103 | MODULE_PARM_DESC(cong_flavor, "TCP Congestion control flavor (default=1)"); |
| 104 | |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 105 | static struct workqueue_struct *workq; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 106 | |
| 107 | static struct sk_buff_head rxq; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 108 | |
| 109 | static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp); |
| 110 | static void ep_timeout(unsigned long arg); |
| 111 | static void connect_reply_upcall(struct iwch_ep *ep, int status); |
| 112 | |
| 113 | static void start_ep_timer(struct iwch_ep *ep) |
| 114 | { |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 115 | PDBG("%s ep %p\n", __func__, ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 116 | if (timer_pending(&ep->timer)) { |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 117 | PDBG("%s stopped / restarted timer ep %p\n", __func__, ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 118 | del_timer_sync(&ep->timer); |
| 119 | } else |
| 120 | get_ep(&ep->com); |
| 121 | ep->timer.expires = jiffies + ep_timeout_secs * HZ; |
| 122 | ep->timer.data = (unsigned long)ep; |
| 123 | ep->timer.function = ep_timeout; |
| 124 | add_timer(&ep->timer); |
| 125 | } |
| 126 | |
| 127 | static void stop_ep_timer(struct iwch_ep *ep) |
| 128 | { |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 129 | PDBG("%s ep %p\n", __func__, ep); |
Steve Wise | 989a178 | 2008-04-29 13:46:51 -0700 | [diff] [blame] | 130 | if (!timer_pending(&ep->timer)) { |
| 131 | printk(KERN_ERR "%s timer stopped when its not running! ep %p state %u\n", |
| 132 | __func__, ep, ep->com.state); |
| 133 | WARN_ON(1); |
| 134 | return; |
| 135 | } |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 136 | del_timer_sync(&ep->timer); |
| 137 | put_ep(&ep->com); |
| 138 | } |
| 139 | |
Or Gerlitz | 18199f5 | 2010-07-20 12:00:20 +0000 | [diff] [blame] | 140 | static int iwch_l2t_send(struct t3cdev *tdev, struct sk_buff *skb, struct l2t_entry *l2e) |
Steve Wise | 04b5d02 | 2009-03-30 08:37:56 -0700 | [diff] [blame] | 141 | { |
| 142 | int error = 0; |
| 143 | struct cxio_rdev *rdev; |
| 144 | |
| 145 | rdev = (struct cxio_rdev *)tdev->ulp; |
| 146 | if (cxio_fatal_error(rdev)) { |
| 147 | kfree_skb(skb); |
| 148 | return -EIO; |
| 149 | } |
| 150 | error = l2t_send(tdev, skb, l2e); |
Steve Wise | 73a203d | 2010-04-05 19:59:57 +0000 | [diff] [blame] | 151 | if (error < 0) |
Steve Wise | 04b5d02 | 2009-03-30 08:37:56 -0700 | [diff] [blame] | 152 | kfree_skb(skb); |
| 153 | return error; |
| 154 | } |
| 155 | |
| 156 | int iwch_cxgb3_ofld_send(struct t3cdev *tdev, struct sk_buff *skb) |
| 157 | { |
| 158 | int error = 0; |
| 159 | struct cxio_rdev *rdev; |
| 160 | |
| 161 | rdev = (struct cxio_rdev *)tdev->ulp; |
| 162 | if (cxio_fatal_error(rdev)) { |
| 163 | kfree_skb(skb); |
| 164 | return -EIO; |
| 165 | } |
| 166 | error = cxgb3_ofld_send(tdev, skb); |
Steve Wise | 73a203d | 2010-04-05 19:59:57 +0000 | [diff] [blame] | 167 | if (error < 0) |
Steve Wise | 04b5d02 | 2009-03-30 08:37:56 -0700 | [diff] [blame] | 168 | kfree_skb(skb); |
| 169 | return error; |
| 170 | } |
| 171 | |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 172 | static void release_tid(struct t3cdev *tdev, u32 hwtid, struct sk_buff *skb) |
| 173 | { |
| 174 | struct cpl_tid_release *req; |
| 175 | |
| 176 | skb = get_skb(skb, sizeof *req, GFP_KERNEL); |
| 177 | if (!skb) |
| 178 | return; |
| 179 | req = (struct cpl_tid_release *) skb_put(skb, sizeof(*req)); |
| 180 | req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); |
| 181 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_TID_RELEASE, hwtid)); |
| 182 | skb->priority = CPL_PRIORITY_SETUP; |
Steve Wise | 04b5d02 | 2009-03-30 08:37:56 -0700 | [diff] [blame] | 183 | iwch_cxgb3_ofld_send(tdev, skb); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 184 | return; |
| 185 | } |
| 186 | |
| 187 | int iwch_quiesce_tid(struct iwch_ep *ep) |
| 188 | { |
| 189 | struct cpl_set_tcb_field *req; |
| 190 | struct sk_buff *skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); |
| 191 | |
| 192 | if (!skb) |
| 193 | return -ENOMEM; |
| 194 | req = (struct cpl_set_tcb_field *) skb_put(skb, sizeof(*req)); |
| 195 | req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); |
| 196 | req->wr.wr_lo = htonl(V_WR_TID(ep->hwtid)); |
| 197 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, ep->hwtid)); |
| 198 | req->reply = 0; |
| 199 | req->cpu_idx = 0; |
| 200 | req->word = htons(W_TCB_RX_QUIESCE); |
| 201 | req->mask = cpu_to_be64(1ULL << S_TCB_RX_QUIESCE); |
| 202 | req->val = cpu_to_be64(1 << S_TCB_RX_QUIESCE); |
| 203 | |
| 204 | skb->priority = CPL_PRIORITY_DATA; |
Steve Wise | 04b5d02 | 2009-03-30 08:37:56 -0700 | [diff] [blame] | 205 | return iwch_cxgb3_ofld_send(ep->com.tdev, skb); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 206 | } |
| 207 | |
| 208 | int iwch_resume_tid(struct iwch_ep *ep) |
| 209 | { |
| 210 | struct cpl_set_tcb_field *req; |
| 211 | struct sk_buff *skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); |
| 212 | |
| 213 | if (!skb) |
| 214 | return -ENOMEM; |
| 215 | req = (struct cpl_set_tcb_field *) skb_put(skb, sizeof(*req)); |
| 216 | req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); |
| 217 | req->wr.wr_lo = htonl(V_WR_TID(ep->hwtid)); |
| 218 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, ep->hwtid)); |
| 219 | req->reply = 0; |
| 220 | req->cpu_idx = 0; |
| 221 | req->word = htons(W_TCB_RX_QUIESCE); |
| 222 | req->mask = cpu_to_be64(1ULL << S_TCB_RX_QUIESCE); |
| 223 | req->val = 0; |
| 224 | |
| 225 | skb->priority = CPL_PRIORITY_DATA; |
Steve Wise | 04b5d02 | 2009-03-30 08:37:56 -0700 | [diff] [blame] | 226 | return iwch_cxgb3_ofld_send(ep->com.tdev, skb); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 227 | } |
| 228 | |
| 229 | static void set_emss(struct iwch_ep *ep, u16 opt) |
| 230 | { |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 231 | PDBG("%s ep %p opt %u\n", __func__, ep, opt); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 232 | ep->emss = T3C_DATA(ep->com.tdev)->mtus[G_TCPOPT_MSS(opt)] - 40; |
| 233 | if (G_TCPOPT_TSTAMP(opt)) |
| 234 | ep->emss -= 12; |
| 235 | if (ep->emss < 128) |
| 236 | ep->emss = 128; |
| 237 | PDBG("emss=%d\n", ep->emss); |
| 238 | } |
| 239 | |
| 240 | static enum iwch_ep_state state_read(struct iwch_ep_common *epc) |
| 241 | { |
| 242 | unsigned long flags; |
| 243 | enum iwch_ep_state state; |
| 244 | |
| 245 | spin_lock_irqsave(&epc->lock, flags); |
| 246 | state = epc->state; |
| 247 | spin_unlock_irqrestore(&epc->lock, flags); |
| 248 | return state; |
| 249 | } |
| 250 | |
Adrian Bunk | 2b54035 | 2007-02-21 11:52:49 +0100 | [diff] [blame] | 251 | static void __state_set(struct iwch_ep_common *epc, enum iwch_ep_state new) |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 252 | { |
| 253 | epc->state = new; |
| 254 | } |
| 255 | |
| 256 | static void state_set(struct iwch_ep_common *epc, enum iwch_ep_state new) |
| 257 | { |
| 258 | unsigned long flags; |
| 259 | |
| 260 | spin_lock_irqsave(&epc->lock, flags); |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 261 | PDBG("%s - %s -> %s\n", __func__, states[epc->state], states[new]); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 262 | __state_set(epc, new); |
| 263 | spin_unlock_irqrestore(&epc->lock, flags); |
| 264 | return; |
| 265 | } |
| 266 | |
| 267 | static void *alloc_ep(int size, gfp_t gfp) |
| 268 | { |
| 269 | struct iwch_ep_common *epc; |
| 270 | |
Yoann Padioleau | dd00cc4 | 2007-07-19 01:49:03 -0700 | [diff] [blame] | 271 | epc = kzalloc(size, gfp); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 272 | if (epc) { |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 273 | kref_init(&epc->kref); |
| 274 | spin_lock_init(&epc->lock); |
| 275 | init_waitqueue_head(&epc->waitq); |
| 276 | } |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 277 | PDBG("%s alloc ep %p\n", __func__, epc); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 278 | return epc; |
| 279 | } |
| 280 | |
| 281 | void __free_ep(struct kref *kref) |
| 282 | { |
Steve Wise | 874d8df | 2009-03-30 08:37:59 -0700 | [diff] [blame] | 283 | struct iwch_ep *ep; |
| 284 | ep = container_of(container_of(kref, struct iwch_ep_common, kref), |
| 285 | struct iwch_ep, com); |
| 286 | PDBG("%s ep %p state %s\n", __func__, ep, states[state_read(&ep->com)]); |
Steve Wise | 6e47fe4 | 2009-09-05 20:22:38 -0700 | [diff] [blame] | 287 | if (test_bit(RELEASE_RESOURCES, &ep->com.flags)) { |
Steve Wise | 874d8df | 2009-03-30 08:37:59 -0700 | [diff] [blame] | 288 | cxgb3_remove_tid(ep->com.tdev, (void *)ep, ep->hwtid); |
| 289 | dst_release(ep->dst); |
| 290 | l2t_release(L2DATA(ep->com.tdev), ep->l2t); |
| 291 | } |
| 292 | kfree(ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 293 | } |
| 294 | |
| 295 | static void release_ep_resources(struct iwch_ep *ep) |
| 296 | { |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 297 | PDBG("%s ep %p tid %d\n", __func__, ep, ep->hwtid); |
Steve Wise | 6e47fe4 | 2009-09-05 20:22:38 -0700 | [diff] [blame] | 298 | set_bit(RELEASE_RESOURCES, &ep->com.flags); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 299 | put_ep(&ep->com); |
| 300 | } |
| 301 | |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 302 | static int status2errno(int status) |
| 303 | { |
| 304 | switch (status) { |
| 305 | case CPL_ERR_NONE: |
| 306 | return 0; |
| 307 | case CPL_ERR_CONN_RESET: |
| 308 | return -ECONNRESET; |
| 309 | case CPL_ERR_ARP_MISS: |
| 310 | return -EHOSTUNREACH; |
| 311 | case CPL_ERR_CONN_TIMEDOUT: |
| 312 | return -ETIMEDOUT; |
| 313 | case CPL_ERR_TCAM_FULL: |
| 314 | return -ENOMEM; |
| 315 | case CPL_ERR_CONN_EXIST: |
| 316 | return -EADDRINUSE; |
| 317 | default: |
| 318 | return -EIO; |
| 319 | } |
| 320 | } |
| 321 | |
| 322 | /* |
| 323 | * Try and reuse skbs already allocated... |
| 324 | */ |
| 325 | static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp) |
| 326 | { |
Steve Wise | 1f6a849 | 2007-03-06 14:44:05 -0600 | [diff] [blame] | 327 | if (skb && !skb_is_nonlinear(skb) && !skb_cloned(skb)) { |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 328 | skb_trim(skb, 0); |
| 329 | skb_get(skb); |
| 330 | } else { |
| 331 | skb = alloc_skb(len, gfp); |
| 332 | } |
| 333 | return skb; |
| 334 | } |
| 335 | |
| 336 | static struct rtable *find_route(struct t3cdev *dev, __be32 local_ip, |
| 337 | __be32 peer_ip, __be16 local_port, |
| 338 | __be16 peer_port, u8 tos) |
| 339 | { |
| 340 | struct rtable *rt; |
| 341 | struct flowi fl = { |
| 342 | .oif = 0, |
| 343 | .nl_u = { |
| 344 | .ip4_u = { |
| 345 | .daddr = peer_ip, |
| 346 | .saddr = local_ip, |
| 347 | .tos = tos} |
| 348 | }, |
| 349 | .proto = IPPROTO_TCP, |
| 350 | .uli_u = { |
| 351 | .ports = { |
| 352 | .sport = local_port, |
| 353 | .dport = peer_port} |
| 354 | } |
| 355 | }; |
| 356 | |
David S. Miller | 420d44d | 2011-03-01 14:19:23 -0800 | [diff] [blame^] | 357 | if (ip_route_output_flow(&init_net, &rt, &fl, NULL, false)) |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 358 | return NULL; |
| 359 | return rt; |
| 360 | } |
| 361 | |
| 362 | static unsigned int find_best_mtu(const struct t3c_data *d, unsigned short mtu) |
| 363 | { |
| 364 | int i = 0; |
| 365 | |
| 366 | while (i < d->nmtus - 1 && d->mtus[i + 1] <= mtu) |
| 367 | ++i; |
| 368 | return i; |
| 369 | } |
| 370 | |
| 371 | static void arp_failure_discard(struct t3cdev *dev, struct sk_buff *skb) |
| 372 | { |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 373 | PDBG("%s t3cdev %p\n", __func__, dev); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 374 | kfree_skb(skb); |
| 375 | } |
| 376 | |
| 377 | /* |
| 378 | * Handle an ARP failure for an active open. |
| 379 | */ |
| 380 | static void act_open_req_arp_failure(struct t3cdev *dev, struct sk_buff *skb) |
| 381 | { |
| 382 | printk(KERN_ERR MOD "ARP failure duing connect\n"); |
| 383 | kfree_skb(skb); |
| 384 | } |
| 385 | |
| 386 | /* |
| 387 | * Handle an ARP failure for a CPL_ABORT_REQ. Change it into a no RST variant |
| 388 | * and send it along. |
| 389 | */ |
| 390 | static void abort_arp_failure(struct t3cdev *dev, struct sk_buff *skb) |
| 391 | { |
| 392 | struct cpl_abort_req *req = cplhdr(skb); |
| 393 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 394 | PDBG("%s t3cdev %p\n", __func__, dev); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 395 | req->cmd = CPL_ABORT_NO_RST; |
Steve Wise | 04b5d02 | 2009-03-30 08:37:56 -0700 | [diff] [blame] | 396 | iwch_cxgb3_ofld_send(dev, skb); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 397 | } |
| 398 | |
| 399 | static int send_halfclose(struct iwch_ep *ep, gfp_t gfp) |
| 400 | { |
| 401 | struct cpl_close_con_req *req; |
| 402 | struct sk_buff *skb; |
| 403 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 404 | PDBG("%s ep %p\n", __func__, ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 405 | skb = get_skb(NULL, sizeof(*req), gfp); |
| 406 | if (!skb) { |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 407 | printk(KERN_ERR MOD "%s - failed to alloc skb\n", __func__); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 408 | return -ENOMEM; |
| 409 | } |
| 410 | skb->priority = CPL_PRIORITY_DATA; |
| 411 | set_arp_failure_handler(skb, arp_failure_discard); |
| 412 | req = (struct cpl_close_con_req *) skb_put(skb, sizeof(*req)); |
| 413 | req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_CLOSE_CON)); |
| 414 | req->wr.wr_lo = htonl(V_WR_TID(ep->hwtid)); |
| 415 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_CLOSE_CON_REQ, ep->hwtid)); |
Steve Wise | 04b5d02 | 2009-03-30 08:37:56 -0700 | [diff] [blame] | 416 | return iwch_l2t_send(ep->com.tdev, skb, ep->l2t); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 417 | } |
| 418 | |
| 419 | static int send_abort(struct iwch_ep *ep, struct sk_buff *skb, gfp_t gfp) |
| 420 | { |
| 421 | struct cpl_abort_req *req; |
| 422 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 423 | PDBG("%s ep %p\n", __func__, ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 424 | skb = get_skb(skb, sizeof(*req), gfp); |
| 425 | if (!skb) { |
| 426 | printk(KERN_ERR MOD "%s - failed to alloc skb.\n", |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 427 | __func__); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 428 | return -ENOMEM; |
| 429 | } |
| 430 | skb->priority = CPL_PRIORITY_DATA; |
| 431 | set_arp_failure_handler(skb, abort_arp_failure); |
| 432 | req = (struct cpl_abort_req *) skb_put(skb, sizeof(*req)); |
| 433 | req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_HOST_ABORT_CON_REQ)); |
| 434 | req->wr.wr_lo = htonl(V_WR_TID(ep->hwtid)); |
| 435 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_ABORT_REQ, ep->hwtid)); |
| 436 | req->cmd = CPL_ABORT_SEND_RST; |
Steve Wise | 04b5d02 | 2009-03-30 08:37:56 -0700 | [diff] [blame] | 437 | return iwch_l2t_send(ep->com.tdev, skb, ep->l2t); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 438 | } |
| 439 | |
| 440 | static int send_connect(struct iwch_ep *ep) |
| 441 | { |
| 442 | struct cpl_act_open_req *req; |
| 443 | struct sk_buff *skb; |
| 444 | u32 opt0h, opt0l, opt2; |
| 445 | unsigned int mtu_idx; |
| 446 | int wscale; |
| 447 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 448 | PDBG("%s ep %p\n", __func__, ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 449 | |
| 450 | skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); |
| 451 | if (!skb) { |
| 452 | printk(KERN_ERR MOD "%s - failed to alloc skb.\n", |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 453 | __func__); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 454 | return -ENOMEM; |
| 455 | } |
| 456 | mtu_idx = find_best_mtu(T3C_DATA(ep->com.tdev), dst_mtu(ep->dst)); |
| 457 | wscale = compute_wscale(rcv_win); |
| 458 | opt0h = V_NAGLE(0) | |
| 459 | V_NO_CONG(nocong) | |
| 460 | V_KEEP_ALIVE(1) | |
| 461 | F_TCAM_BYPASS | |
| 462 | V_WND_SCALE(wscale) | |
| 463 | V_MSS_IDX(mtu_idx) | |
| 464 | V_L2T_IDX(ep->l2t->idx) | V_TX_CHANNEL(ep->l2t->smt_idx); |
| 465 | opt0l = V_TOS((ep->tos >> 2) & M_TOS) | V_RCV_BUFSIZ(rcv_win>>10); |
Steve Wise | bec658f | 2010-09-18 19:38:21 -0500 | [diff] [blame] | 466 | opt2 = F_RX_COALESCE_VALID | V_RX_COALESCE(0) | V_FLAVORS_VALID(1) | |
| 467 | V_CONG_CONTROL_FLAVOR(cong_flavor); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 468 | skb->priority = CPL_PRIORITY_SETUP; |
| 469 | set_arp_failure_handler(skb, act_open_req_arp_failure); |
| 470 | |
| 471 | req = (struct cpl_act_open_req *) skb_put(skb, sizeof(*req)); |
| 472 | req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); |
| 473 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_ACT_OPEN_REQ, ep->atid)); |
| 474 | req->local_port = ep->com.local_addr.sin_port; |
| 475 | req->peer_port = ep->com.remote_addr.sin_port; |
| 476 | req->local_ip = ep->com.local_addr.sin_addr.s_addr; |
| 477 | req->peer_ip = ep->com.remote_addr.sin_addr.s_addr; |
| 478 | req->opt0h = htonl(opt0h); |
| 479 | req->opt0l = htonl(opt0l); |
| 480 | req->params = 0; |
| 481 | req->opt2 = htonl(opt2); |
Steve Wise | 04b5d02 | 2009-03-30 08:37:56 -0700 | [diff] [blame] | 482 | return iwch_l2t_send(ep->com.tdev, skb, ep->l2t); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 483 | } |
| 484 | |
| 485 | static void send_mpa_req(struct iwch_ep *ep, struct sk_buff *skb) |
| 486 | { |
| 487 | int mpalen; |
| 488 | struct tx_data_wr *req; |
| 489 | struct mpa_message *mpa; |
| 490 | int len; |
| 491 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 492 | PDBG("%s ep %p pd_len %d\n", __func__, ep, ep->plen); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 493 | |
| 494 | BUG_ON(skb_cloned(skb)); |
| 495 | |
| 496 | mpalen = sizeof(*mpa) + ep->plen; |
Arnaldo Carvalho de Melo | 4305b54 | 2007-04-19 20:43:29 -0700 | [diff] [blame] | 497 | if (skb->data + mpalen + sizeof(*req) > skb_end_pointer(skb)) { |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 498 | kfree_skb(skb); |
| 499 | skb=alloc_skb(mpalen + sizeof(*req), GFP_KERNEL); |
| 500 | if (!skb) { |
| 501 | connect_reply_upcall(ep, -ENOMEM); |
| 502 | return; |
| 503 | } |
| 504 | } |
| 505 | skb_trim(skb, 0); |
| 506 | skb_reserve(skb, sizeof(*req)); |
| 507 | skb_put(skb, mpalen); |
| 508 | skb->priority = CPL_PRIORITY_DATA; |
| 509 | mpa = (struct mpa_message *) skb->data; |
| 510 | memset(mpa, 0, sizeof(*mpa)); |
| 511 | memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key)); |
| 512 | mpa->flags = (crc_enabled ? MPA_CRC : 0) | |
| 513 | (markers_enabled ? MPA_MARKERS : 0); |
| 514 | mpa->private_data_size = htons(ep->plen); |
| 515 | mpa->revision = mpa_rev; |
| 516 | |
| 517 | if (ep->plen) |
| 518 | memcpy(mpa->private_data, ep->mpa_pkt + sizeof(*mpa), ep->plen); |
| 519 | |
| 520 | /* |
| 521 | * Reference the mpa skb. This ensures the data area |
| 522 | * will remain in memory until the hw acks the tx. |
| 523 | * Function tx_ack() will deref it. |
| 524 | */ |
| 525 | skb_get(skb); |
| 526 | set_arp_failure_handler(skb, arp_failure_discard); |
Arnaldo Carvalho de Melo | badff6d | 2007-03-13 13:06:52 -0300 | [diff] [blame] | 527 | skb_reset_transport_header(skb); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 528 | len = skb->len; |
| 529 | req = (struct tx_data_wr *) skb_push(skb, sizeof(*req)); |
Steve Wise | f8b0dfd | 2008-04-29 13:46:52 -0700 | [diff] [blame] | 530 | req->wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_TX_DATA)|F_WR_COMPL); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 531 | req->wr_lo = htonl(V_WR_TID(ep->hwtid)); |
| 532 | req->len = htonl(len); |
| 533 | req->param = htonl(V_TX_PORT(ep->l2t->smt_idx) | |
| 534 | V_TX_SNDBUF(snd_win>>15)); |
Steve Wise | de3d353 | 2007-05-14 13:27:27 -0500 | [diff] [blame] | 535 | req->flags = htonl(F_TX_INIT); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 536 | req->sndseq = htonl(ep->snd_seq); |
| 537 | BUG_ON(ep->mpa_skb); |
| 538 | ep->mpa_skb = skb; |
Steve Wise | 04b5d02 | 2009-03-30 08:37:56 -0700 | [diff] [blame] | 539 | iwch_l2t_send(ep->com.tdev, skb, ep->l2t); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 540 | start_ep_timer(ep); |
| 541 | state_set(&ep->com, MPA_REQ_SENT); |
| 542 | return; |
| 543 | } |
| 544 | |
| 545 | static int send_mpa_reject(struct iwch_ep *ep, const void *pdata, u8 plen) |
| 546 | { |
| 547 | int mpalen; |
| 548 | struct tx_data_wr *req; |
| 549 | struct mpa_message *mpa; |
| 550 | struct sk_buff *skb; |
| 551 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 552 | PDBG("%s ep %p plen %d\n", __func__, ep, plen); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 553 | |
| 554 | mpalen = sizeof(*mpa) + plen; |
| 555 | |
| 556 | skb = get_skb(NULL, mpalen + sizeof(*req), GFP_KERNEL); |
| 557 | if (!skb) { |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 558 | printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 559 | return -ENOMEM; |
| 560 | } |
| 561 | skb_reserve(skb, sizeof(*req)); |
| 562 | mpa = (struct mpa_message *) skb_put(skb, mpalen); |
| 563 | memset(mpa, 0, sizeof(*mpa)); |
| 564 | memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); |
| 565 | mpa->flags = MPA_REJECT; |
| 566 | mpa->revision = mpa_rev; |
| 567 | mpa->private_data_size = htons(plen); |
| 568 | if (plen) |
| 569 | memcpy(mpa->private_data, pdata, plen); |
| 570 | |
| 571 | /* |
| 572 | * Reference the mpa skb again. This ensures the data area |
| 573 | * will remain in memory until the hw acks the tx. |
| 574 | * Function tx_ack() will deref it. |
| 575 | */ |
| 576 | skb_get(skb); |
| 577 | skb->priority = CPL_PRIORITY_DATA; |
| 578 | set_arp_failure_handler(skb, arp_failure_discard); |
Arnaldo Carvalho de Melo | badff6d | 2007-03-13 13:06:52 -0300 | [diff] [blame] | 579 | skb_reset_transport_header(skb); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 580 | req = (struct tx_data_wr *) skb_push(skb, sizeof(*req)); |
Steve Wise | f8b0dfd | 2008-04-29 13:46:52 -0700 | [diff] [blame] | 581 | req->wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_TX_DATA)|F_WR_COMPL); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 582 | req->wr_lo = htonl(V_WR_TID(ep->hwtid)); |
| 583 | req->len = htonl(mpalen); |
| 584 | req->param = htonl(V_TX_PORT(ep->l2t->smt_idx) | |
| 585 | V_TX_SNDBUF(snd_win>>15)); |
Steve Wise | de3d353 | 2007-05-14 13:27:27 -0500 | [diff] [blame] | 586 | req->flags = htonl(F_TX_INIT); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 587 | req->sndseq = htonl(ep->snd_seq); |
| 588 | BUG_ON(ep->mpa_skb); |
| 589 | ep->mpa_skb = skb; |
Steve Wise | 04b5d02 | 2009-03-30 08:37:56 -0700 | [diff] [blame] | 590 | return iwch_l2t_send(ep->com.tdev, skb, ep->l2t); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 591 | } |
| 592 | |
| 593 | static int send_mpa_reply(struct iwch_ep *ep, const void *pdata, u8 plen) |
| 594 | { |
| 595 | int mpalen; |
| 596 | struct tx_data_wr *req; |
| 597 | struct mpa_message *mpa; |
| 598 | int len; |
| 599 | struct sk_buff *skb; |
| 600 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 601 | PDBG("%s ep %p plen %d\n", __func__, ep, plen); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 602 | |
| 603 | mpalen = sizeof(*mpa) + plen; |
| 604 | |
| 605 | skb = get_skb(NULL, mpalen + sizeof(*req), GFP_KERNEL); |
| 606 | if (!skb) { |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 607 | printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 608 | return -ENOMEM; |
| 609 | } |
| 610 | skb->priority = CPL_PRIORITY_DATA; |
| 611 | skb_reserve(skb, sizeof(*req)); |
| 612 | mpa = (struct mpa_message *) skb_put(skb, mpalen); |
| 613 | memset(mpa, 0, sizeof(*mpa)); |
| 614 | memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); |
| 615 | mpa->flags = (ep->mpa_attr.crc_enabled ? MPA_CRC : 0) | |
| 616 | (markers_enabled ? MPA_MARKERS : 0); |
| 617 | mpa->revision = mpa_rev; |
| 618 | mpa->private_data_size = htons(plen); |
| 619 | if (plen) |
| 620 | memcpy(mpa->private_data, pdata, plen); |
| 621 | |
| 622 | /* |
| 623 | * Reference the mpa skb. This ensures the data area |
| 624 | * will remain in memory until the hw acks the tx. |
| 625 | * Function tx_ack() will deref it. |
| 626 | */ |
| 627 | skb_get(skb); |
| 628 | set_arp_failure_handler(skb, arp_failure_discard); |
Arnaldo Carvalho de Melo | badff6d | 2007-03-13 13:06:52 -0300 | [diff] [blame] | 629 | skb_reset_transport_header(skb); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 630 | len = skb->len; |
| 631 | req = (struct tx_data_wr *) skb_push(skb, sizeof(*req)); |
Steve Wise | f8b0dfd | 2008-04-29 13:46:52 -0700 | [diff] [blame] | 632 | req->wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_TX_DATA)|F_WR_COMPL); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 633 | req->wr_lo = htonl(V_WR_TID(ep->hwtid)); |
| 634 | req->len = htonl(len); |
| 635 | req->param = htonl(V_TX_PORT(ep->l2t->smt_idx) | |
| 636 | V_TX_SNDBUF(snd_win>>15)); |
Steve Wise | de3d353 | 2007-05-14 13:27:27 -0500 | [diff] [blame] | 637 | req->flags = htonl(F_TX_INIT); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 638 | req->sndseq = htonl(ep->snd_seq); |
| 639 | ep->mpa_skb = skb; |
| 640 | state_set(&ep->com, MPA_REP_SENT); |
Steve Wise | 04b5d02 | 2009-03-30 08:37:56 -0700 | [diff] [blame] | 641 | return iwch_l2t_send(ep->com.tdev, skb, ep->l2t); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 642 | } |
| 643 | |
| 644 | static int act_establish(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) |
| 645 | { |
| 646 | struct iwch_ep *ep = ctx; |
| 647 | struct cpl_act_establish *req = cplhdr(skb); |
| 648 | unsigned int tid = GET_TID(req); |
| 649 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 650 | PDBG("%s ep %p tid %d\n", __func__, ep, tid); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 651 | |
| 652 | dst_confirm(ep->dst); |
| 653 | |
| 654 | /* setup the hwtid for this connection */ |
| 655 | ep->hwtid = tid; |
| 656 | cxgb3_insert_tid(ep->com.tdev, &t3c_client, ep, tid); |
| 657 | |
| 658 | ep->snd_seq = ntohl(req->snd_isn); |
Steve Wise | de3d353 | 2007-05-14 13:27:27 -0500 | [diff] [blame] | 659 | ep->rcv_seq = ntohl(req->rcv_isn); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 660 | |
| 661 | set_emss(ep, ntohs(req->tcp_opt)); |
| 662 | |
| 663 | /* dealloc the atid */ |
| 664 | cxgb3_free_atid(ep->com.tdev, ep->atid); |
| 665 | |
| 666 | /* start MPA negotiation */ |
| 667 | send_mpa_req(ep, skb); |
| 668 | |
| 669 | return 0; |
| 670 | } |
| 671 | |
| 672 | static void abort_connection(struct iwch_ep *ep, struct sk_buff *skb, gfp_t gfp) |
| 673 | { |
| 674 | PDBG("%s ep %p\n", __FILE__, ep); |
| 675 | state_set(&ep->com, ABORTING); |
| 676 | send_abort(ep, skb, gfp); |
| 677 | } |
| 678 | |
| 679 | static void close_complete_upcall(struct iwch_ep *ep) |
| 680 | { |
| 681 | struct iw_cm_event event; |
| 682 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 683 | PDBG("%s ep %p\n", __func__, ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 684 | memset(&event, 0, sizeof(event)); |
| 685 | event.event = IW_CM_EVENT_CLOSE; |
| 686 | if (ep->com.cm_id) { |
| 687 | PDBG("close complete delivered ep %p cm_id %p tid %d\n", |
| 688 | ep, ep->com.cm_id, ep->hwtid); |
| 689 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); |
| 690 | ep->com.cm_id->rem_ref(ep->com.cm_id); |
| 691 | ep->com.cm_id = NULL; |
| 692 | ep->com.qp = NULL; |
| 693 | } |
| 694 | } |
| 695 | |
| 696 | static void peer_close_upcall(struct iwch_ep *ep) |
| 697 | { |
| 698 | struct iw_cm_event event; |
| 699 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 700 | PDBG("%s ep %p\n", __func__, ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 701 | memset(&event, 0, sizeof(event)); |
| 702 | event.event = IW_CM_EVENT_DISCONNECT; |
| 703 | if (ep->com.cm_id) { |
| 704 | PDBG("peer close delivered ep %p cm_id %p tid %d\n", |
| 705 | ep, ep->com.cm_id, ep->hwtid); |
| 706 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); |
| 707 | } |
| 708 | } |
| 709 | |
| 710 | static void peer_abort_upcall(struct iwch_ep *ep) |
| 711 | { |
| 712 | struct iw_cm_event event; |
| 713 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 714 | PDBG("%s ep %p\n", __func__, ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 715 | memset(&event, 0, sizeof(event)); |
| 716 | event.event = IW_CM_EVENT_CLOSE; |
| 717 | event.status = -ECONNRESET; |
| 718 | if (ep->com.cm_id) { |
| 719 | PDBG("abort delivered ep %p cm_id %p tid %d\n", ep, |
| 720 | ep->com.cm_id, ep->hwtid); |
| 721 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); |
| 722 | ep->com.cm_id->rem_ref(ep->com.cm_id); |
| 723 | ep->com.cm_id = NULL; |
| 724 | ep->com.qp = NULL; |
| 725 | } |
| 726 | } |
| 727 | |
| 728 | static void connect_reply_upcall(struct iwch_ep *ep, int status) |
| 729 | { |
| 730 | struct iw_cm_event event; |
| 731 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 732 | PDBG("%s ep %p status %d\n", __func__, ep, status); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 733 | memset(&event, 0, sizeof(event)); |
| 734 | event.event = IW_CM_EVENT_CONNECT_REPLY; |
| 735 | event.status = status; |
| 736 | event.local_addr = ep->com.local_addr; |
| 737 | event.remote_addr = ep->com.remote_addr; |
| 738 | |
| 739 | if ((status == 0) || (status == -ECONNREFUSED)) { |
| 740 | event.private_data_len = ep->plen; |
| 741 | event.private_data = ep->mpa_pkt + sizeof(struct mpa_message); |
| 742 | } |
| 743 | if (ep->com.cm_id) { |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 744 | PDBG("%s ep %p tid %d status %d\n", __func__, ep, |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 745 | ep->hwtid, status); |
| 746 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); |
| 747 | } |
| 748 | if (status < 0) { |
| 749 | ep->com.cm_id->rem_ref(ep->com.cm_id); |
| 750 | ep->com.cm_id = NULL; |
| 751 | ep->com.qp = NULL; |
| 752 | } |
| 753 | } |
| 754 | |
| 755 | static void connect_request_upcall(struct iwch_ep *ep) |
| 756 | { |
| 757 | struct iw_cm_event event; |
| 758 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 759 | PDBG("%s ep %p tid %d\n", __func__, ep, ep->hwtid); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 760 | memset(&event, 0, sizeof(event)); |
| 761 | event.event = IW_CM_EVENT_CONNECT_REQUEST; |
| 762 | event.local_addr = ep->com.local_addr; |
| 763 | event.remote_addr = ep->com.remote_addr; |
| 764 | event.private_data_len = ep->plen; |
| 765 | event.private_data = ep->mpa_pkt + sizeof(struct mpa_message); |
| 766 | event.provider_data = ep; |
Steve Wise | 6e47fe4 | 2009-09-05 20:22:38 -0700 | [diff] [blame] | 767 | if (state_read(&ep->parent_ep->com) != DEAD) { |
| 768 | get_ep(&ep->com); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 769 | ep->parent_ep->com.cm_id->event_handler( |
| 770 | ep->parent_ep->com.cm_id, |
| 771 | &event); |
Steve Wise | 6e47fe4 | 2009-09-05 20:22:38 -0700 | [diff] [blame] | 772 | } |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 773 | put_ep(&ep->parent_ep->com); |
| 774 | ep->parent_ep = NULL; |
| 775 | } |
| 776 | |
| 777 | static void established_upcall(struct iwch_ep *ep) |
| 778 | { |
| 779 | struct iw_cm_event event; |
| 780 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 781 | PDBG("%s ep %p\n", __func__, ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 782 | memset(&event, 0, sizeof(event)); |
| 783 | event.event = IW_CM_EVENT_ESTABLISHED; |
| 784 | if (ep->com.cm_id) { |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 785 | PDBG("%s ep %p tid %d\n", __func__, ep, ep->hwtid); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 786 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); |
| 787 | } |
| 788 | } |
| 789 | |
| 790 | static int update_rx_credits(struct iwch_ep *ep, u32 credits) |
| 791 | { |
| 792 | struct cpl_rx_data_ack *req; |
| 793 | struct sk_buff *skb; |
| 794 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 795 | PDBG("%s ep %p credits %u\n", __func__, ep, credits); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 796 | skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); |
| 797 | if (!skb) { |
| 798 | printk(KERN_ERR MOD "update_rx_credits - cannot alloc skb!\n"); |
| 799 | return 0; |
| 800 | } |
| 801 | |
| 802 | req = (struct cpl_rx_data_ack *) skb_put(skb, sizeof(*req)); |
| 803 | req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); |
| 804 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_RX_DATA_ACK, ep->hwtid)); |
| 805 | req->credit_dack = htonl(V_RX_CREDITS(credits) | V_RX_FORCE_ACK(1)); |
| 806 | skb->priority = CPL_PRIORITY_ACK; |
Steve Wise | 04b5d02 | 2009-03-30 08:37:56 -0700 | [diff] [blame] | 807 | iwch_cxgb3_ofld_send(ep->com.tdev, skb); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 808 | return credits; |
| 809 | } |
| 810 | |
| 811 | static void process_mpa_reply(struct iwch_ep *ep, struct sk_buff *skb) |
| 812 | { |
| 813 | struct mpa_message *mpa; |
| 814 | u16 plen; |
| 815 | struct iwch_qp_attributes attrs; |
| 816 | enum iwch_qp_attr_mask mask; |
| 817 | int err; |
| 818 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 819 | PDBG("%s ep %p\n", __func__, ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 820 | |
| 821 | /* |
| 822 | * Stop mpa timer. If it expired, then the state has |
| 823 | * changed and we bail since ep_timeout already aborted |
| 824 | * the connection. |
| 825 | */ |
| 826 | stop_ep_timer(ep); |
| 827 | if (state_read(&ep->com) != MPA_REQ_SENT) |
| 828 | return; |
| 829 | |
| 830 | /* |
| 831 | * If we get more than the supported amount of private data |
| 832 | * then we must fail this connection. |
| 833 | */ |
| 834 | if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) { |
| 835 | err = -EINVAL; |
| 836 | goto err; |
| 837 | } |
| 838 | |
| 839 | /* |
| 840 | * copy the new data into our accumulation buffer. |
| 841 | */ |
Arnaldo Carvalho de Melo | d626f62 | 2007-03-27 18:55:52 -0300 | [diff] [blame] | 842 | skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]), |
| 843 | skb->len); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 844 | ep->mpa_pkt_len += skb->len; |
| 845 | |
| 846 | /* |
| 847 | * if we don't even have the mpa message, then bail. |
| 848 | */ |
| 849 | if (ep->mpa_pkt_len < sizeof(*mpa)) |
| 850 | return; |
| 851 | mpa = (struct mpa_message *) ep->mpa_pkt; |
| 852 | |
| 853 | /* Validate MPA header. */ |
| 854 | if (mpa->revision != mpa_rev) { |
| 855 | err = -EPROTO; |
| 856 | goto err; |
| 857 | } |
| 858 | if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) { |
| 859 | err = -EPROTO; |
| 860 | goto err; |
| 861 | } |
| 862 | |
| 863 | plen = ntohs(mpa->private_data_size); |
| 864 | |
| 865 | /* |
| 866 | * Fail if there's too much private data. |
| 867 | */ |
| 868 | if (plen > MPA_MAX_PRIVATE_DATA) { |
| 869 | err = -EPROTO; |
| 870 | goto err; |
| 871 | } |
| 872 | |
| 873 | /* |
| 874 | * If plen does not account for pkt size |
| 875 | */ |
| 876 | if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { |
| 877 | err = -EPROTO; |
| 878 | goto err; |
| 879 | } |
| 880 | |
| 881 | ep->plen = (u8) plen; |
| 882 | |
| 883 | /* |
| 884 | * If we don't have all the pdata yet, then bail. |
| 885 | * We'll continue process when more data arrives. |
| 886 | */ |
| 887 | if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) |
| 888 | return; |
| 889 | |
| 890 | if (mpa->flags & MPA_REJECT) { |
| 891 | err = -ECONNREFUSED; |
| 892 | goto err; |
| 893 | } |
| 894 | |
| 895 | /* |
| 896 | * If we get here we have accumulated the entire mpa |
| 897 | * start reply message including private data. And |
| 898 | * the MPA header is valid. |
| 899 | */ |
| 900 | state_set(&ep->com, FPDU_MODE); |
Steve Wise | f8b0dfd | 2008-04-29 13:46:52 -0700 | [diff] [blame] | 901 | ep->mpa_attr.initiator = 1; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 902 | ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; |
| 903 | ep->mpa_attr.recv_marker_enabled = markers_enabled; |
| 904 | ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; |
| 905 | ep->mpa_attr.version = mpa_rev; |
| 906 | PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, " |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 907 | "xmit_marker_enabled=%d, version=%d\n", __func__, |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 908 | ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, |
| 909 | ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version); |
| 910 | |
| 911 | attrs.mpa_attr = ep->mpa_attr; |
| 912 | attrs.max_ird = ep->ird; |
| 913 | attrs.max_ord = ep->ord; |
| 914 | attrs.llp_stream_handle = ep; |
| 915 | attrs.next_state = IWCH_QP_STATE_RTS; |
| 916 | |
| 917 | mask = IWCH_QP_ATTR_NEXT_STATE | |
| 918 | IWCH_QP_ATTR_LLP_STREAM_HANDLE | IWCH_QP_ATTR_MPA_ATTR | |
| 919 | IWCH_QP_ATTR_MAX_IRD | IWCH_QP_ATTR_MAX_ORD; |
| 920 | |
| 921 | /* bind QP and TID with INIT_WR */ |
| 922 | err = iwch_modify_qp(ep->com.qp->rhp, |
| 923 | ep->com.qp, mask, &attrs, 1); |
Steve Wise | f8b0dfd | 2008-04-29 13:46:52 -0700 | [diff] [blame] | 924 | if (err) |
| 925 | goto err; |
| 926 | |
| 927 | if (peer2peer && iwch_rqes_posted(ep->com.qp) == 0) { |
| 928 | iwch_post_zb_read(ep->com.qp); |
| 929 | } |
| 930 | |
| 931 | goto out; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 932 | err: |
| 933 | abort_connection(ep, skb, GFP_KERNEL); |
| 934 | out: |
| 935 | connect_reply_upcall(ep, err); |
| 936 | return; |
| 937 | } |
| 938 | |
| 939 | static void process_mpa_request(struct iwch_ep *ep, struct sk_buff *skb) |
| 940 | { |
| 941 | struct mpa_message *mpa; |
| 942 | u16 plen; |
| 943 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 944 | PDBG("%s ep %p\n", __func__, ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 945 | |
| 946 | /* |
| 947 | * Stop mpa timer. If it expired, then the state has |
| 948 | * changed and we bail since ep_timeout already aborted |
| 949 | * the connection. |
| 950 | */ |
| 951 | stop_ep_timer(ep); |
| 952 | if (state_read(&ep->com) != MPA_REQ_WAIT) |
| 953 | return; |
| 954 | |
| 955 | /* |
| 956 | * If we get more than the supported amount of private data |
| 957 | * then we must fail this connection. |
| 958 | */ |
| 959 | if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) { |
| 960 | abort_connection(ep, skb, GFP_KERNEL); |
| 961 | return; |
| 962 | } |
| 963 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 964 | PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 965 | |
| 966 | /* |
| 967 | * Copy the new data into our accumulation buffer. |
| 968 | */ |
Arnaldo Carvalho de Melo | d626f62 | 2007-03-27 18:55:52 -0300 | [diff] [blame] | 969 | skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]), |
| 970 | skb->len); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 971 | ep->mpa_pkt_len += skb->len; |
| 972 | |
| 973 | /* |
| 974 | * If we don't even have the mpa message, then bail. |
| 975 | * We'll continue process when more data arrives. |
| 976 | */ |
| 977 | if (ep->mpa_pkt_len < sizeof(*mpa)) |
| 978 | return; |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 979 | PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 980 | mpa = (struct mpa_message *) ep->mpa_pkt; |
| 981 | |
| 982 | /* |
| 983 | * Validate MPA Header. |
| 984 | */ |
| 985 | if (mpa->revision != mpa_rev) { |
| 986 | abort_connection(ep, skb, GFP_KERNEL); |
| 987 | return; |
| 988 | } |
| 989 | |
| 990 | if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key))) { |
| 991 | abort_connection(ep, skb, GFP_KERNEL); |
| 992 | return; |
| 993 | } |
| 994 | |
| 995 | plen = ntohs(mpa->private_data_size); |
| 996 | |
| 997 | /* |
| 998 | * Fail if there's too much private data. |
| 999 | */ |
| 1000 | if (plen > MPA_MAX_PRIVATE_DATA) { |
| 1001 | abort_connection(ep, skb, GFP_KERNEL); |
| 1002 | return; |
| 1003 | } |
| 1004 | |
| 1005 | /* |
| 1006 | * If plen does not account for pkt size |
| 1007 | */ |
| 1008 | if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { |
| 1009 | abort_connection(ep, skb, GFP_KERNEL); |
| 1010 | return; |
| 1011 | } |
| 1012 | ep->plen = (u8) plen; |
| 1013 | |
| 1014 | /* |
| 1015 | * If we don't have all the pdata yet, then bail. |
| 1016 | */ |
| 1017 | if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) |
| 1018 | return; |
| 1019 | |
| 1020 | /* |
| 1021 | * If we get here we have accumulated the entire mpa |
| 1022 | * start reply message including private data. |
| 1023 | */ |
Steve Wise | f8b0dfd | 2008-04-29 13:46:52 -0700 | [diff] [blame] | 1024 | ep->mpa_attr.initiator = 0; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1025 | ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; |
| 1026 | ep->mpa_attr.recv_marker_enabled = markers_enabled; |
| 1027 | ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; |
| 1028 | ep->mpa_attr.version = mpa_rev; |
| 1029 | PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, " |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1030 | "xmit_marker_enabled=%d, version=%d\n", __func__, |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1031 | ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, |
| 1032 | ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version); |
| 1033 | |
| 1034 | state_set(&ep->com, MPA_REQ_RCVD); |
| 1035 | |
| 1036 | /* drive upcall */ |
| 1037 | connect_request_upcall(ep); |
| 1038 | return; |
| 1039 | } |
| 1040 | |
| 1041 | static int rx_data(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) |
| 1042 | { |
| 1043 | struct iwch_ep *ep = ctx; |
| 1044 | struct cpl_rx_data *hdr = cplhdr(skb); |
| 1045 | unsigned int dlen = ntohs(hdr->len); |
| 1046 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1047 | PDBG("%s ep %p dlen %u\n", __func__, ep, dlen); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1048 | |
| 1049 | skb_pull(skb, sizeof(*hdr)); |
| 1050 | skb_trim(skb, dlen); |
| 1051 | |
Steve Wise | de3d353 | 2007-05-14 13:27:27 -0500 | [diff] [blame] | 1052 | ep->rcv_seq += dlen; |
| 1053 | BUG_ON(ep->rcv_seq != (ntohl(hdr->seq) + dlen)); |
| 1054 | |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1055 | switch (state_read(&ep->com)) { |
| 1056 | case MPA_REQ_SENT: |
| 1057 | process_mpa_reply(ep, skb); |
| 1058 | break; |
| 1059 | case MPA_REQ_WAIT: |
| 1060 | process_mpa_request(ep, skb); |
| 1061 | break; |
| 1062 | case MPA_REP_SENT: |
| 1063 | break; |
| 1064 | default: |
| 1065 | printk(KERN_ERR MOD "%s Unexpected streaming data." |
| 1066 | " ep %p state %d tid %d\n", |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1067 | __func__, ep, state_read(&ep->com), ep->hwtid); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1068 | |
| 1069 | /* |
| 1070 | * The ep will timeout and inform the ULP of the failure. |
| 1071 | * See ep_timeout(). |
| 1072 | */ |
| 1073 | break; |
| 1074 | } |
| 1075 | |
| 1076 | /* update RX credits */ |
| 1077 | update_rx_credits(ep, dlen); |
| 1078 | |
| 1079 | return CPL_RET_BUF_DONE; |
| 1080 | } |
| 1081 | |
| 1082 | /* |
| 1083 | * Upcall from the adapter indicating data has been transmitted. |
| 1084 | * For us its just the single MPA request or reply. We can now free |
| 1085 | * the skb holding the mpa message. |
| 1086 | */ |
| 1087 | static int tx_ack(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) |
| 1088 | { |
| 1089 | struct iwch_ep *ep = ctx; |
| 1090 | struct cpl_wr_ack *hdr = cplhdr(skb); |
| 1091 | unsigned int credits = ntohs(hdr->credits); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1092 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1093 | PDBG("%s ep %p credits %u\n", __func__, ep, credits); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1094 | |
Steve Wise | f8b0dfd | 2008-04-29 13:46:52 -0700 | [diff] [blame] | 1095 | if (credits == 0) { |
Joe Perches | ca7cf94 | 2010-10-25 19:44:22 -0700 | [diff] [blame] | 1096 | PDBG("%s 0 credit ack ep %p state %u\n", |
| 1097 | __func__, ep, state_read(&ep->com)); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1098 | return CPL_RET_BUF_DONE; |
Steve Wise | f8b0dfd | 2008-04-29 13:46:52 -0700 | [diff] [blame] | 1099 | } |
| 1100 | |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1101 | BUG_ON(credits != 1); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1102 | dst_confirm(ep->dst); |
Steve Wise | f8b0dfd | 2008-04-29 13:46:52 -0700 | [diff] [blame] | 1103 | if (!ep->mpa_skb) { |
| 1104 | PDBG("%s rdma_init wr_ack ep %p state %u\n", |
| 1105 | __func__, ep, state_read(&ep->com)); |
| 1106 | if (ep->mpa_attr.initiator) { |
| 1107 | PDBG("%s initiator ep %p state %u\n", |
| 1108 | __func__, ep, state_read(&ep->com)); |
| 1109 | if (peer2peer) |
| 1110 | iwch_post_zb_read(ep->com.qp); |
| 1111 | } else { |
| 1112 | PDBG("%s responder ep %p state %u\n", |
| 1113 | __func__, ep, state_read(&ep->com)); |
| 1114 | ep->com.rpl_done = 1; |
| 1115 | wake_up(&ep->com.waitq); |
| 1116 | } |
| 1117 | } else { |
| 1118 | PDBG("%s lsm ack ep %p state %u freeing skb\n", |
| 1119 | __func__, ep, state_read(&ep->com)); |
| 1120 | kfree_skb(ep->mpa_skb); |
| 1121 | ep->mpa_skb = NULL; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1122 | } |
| 1123 | return CPL_RET_BUF_DONE; |
| 1124 | } |
| 1125 | |
| 1126 | static int abort_rpl(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) |
| 1127 | { |
| 1128 | struct iwch_ep *ep = ctx; |
Steve Wise | 989a178 | 2008-04-29 13:46:51 -0700 | [diff] [blame] | 1129 | unsigned long flags; |
| 1130 | int release = 0; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1131 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1132 | PDBG("%s ep %p\n", __func__, ep); |
Steve Wise | 989a178 | 2008-04-29 13:46:51 -0700 | [diff] [blame] | 1133 | BUG_ON(!ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1134 | |
Steve Wise | aff9e39 | 2007-04-26 15:21:20 -0500 | [diff] [blame] | 1135 | /* |
| 1136 | * We get 2 abort replies from the HW. The first one must |
| 1137 | * be ignored except for scribbling that we need one more. |
| 1138 | */ |
Steve Wise | 6e47fe4 | 2009-09-05 20:22:38 -0700 | [diff] [blame] | 1139 | if (!test_and_set_bit(ABORT_REQ_IN_PROGRESS, &ep->com.flags)) { |
Steve Wise | aff9e39 | 2007-04-26 15:21:20 -0500 | [diff] [blame] | 1140 | return CPL_RET_BUF_DONE; |
| 1141 | } |
| 1142 | |
Steve Wise | 989a178 | 2008-04-29 13:46:51 -0700 | [diff] [blame] | 1143 | spin_lock_irqsave(&ep->com.lock, flags); |
| 1144 | switch (ep->com.state) { |
| 1145 | case ABORTING: |
| 1146 | close_complete_upcall(ep); |
| 1147 | __state_set(&ep->com, DEAD); |
| 1148 | release = 1; |
| 1149 | break; |
| 1150 | default: |
| 1151 | printk(KERN_ERR "%s ep %p state %d\n", |
| 1152 | __func__, ep, ep->com.state); |
| 1153 | break; |
| 1154 | } |
| 1155 | spin_unlock_irqrestore(&ep->com.lock, flags); |
| 1156 | |
| 1157 | if (release) |
| 1158 | release_ep_resources(ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1159 | return CPL_RET_BUF_DONE; |
| 1160 | } |
| 1161 | |
Steve Wise | 96d0e49 | 2007-06-21 18:17:57 -0500 | [diff] [blame] | 1162 | /* |
| 1163 | * Return whether a failed active open has allocated a TID |
| 1164 | */ |
| 1165 | static inline int act_open_has_tid(int status) |
| 1166 | { |
| 1167 | return status != CPL_ERR_TCAM_FULL && status != CPL_ERR_CONN_EXIST && |
| 1168 | status != CPL_ERR_ARP_MISS; |
| 1169 | } |
| 1170 | |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1171 | static int act_open_rpl(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) |
| 1172 | { |
| 1173 | struct iwch_ep *ep = ctx; |
| 1174 | struct cpl_act_open_rpl *rpl = cplhdr(skb); |
| 1175 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1176 | PDBG("%s ep %p status %u errno %d\n", __func__, ep, rpl->status, |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1177 | status2errno(rpl->status)); |
| 1178 | connect_reply_upcall(ep, status2errno(rpl->status)); |
| 1179 | state_set(&ep->com, DEAD); |
Steve Wise | 8176d29 | 2008-01-24 16:30:16 -0600 | [diff] [blame] | 1180 | if (ep->com.tdev->type != T3A && act_open_has_tid(rpl->status)) |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1181 | release_tid(ep->com.tdev, GET_TID(rpl), NULL); |
| 1182 | cxgb3_free_atid(ep->com.tdev, ep->atid); |
| 1183 | dst_release(ep->dst); |
| 1184 | l2t_release(L2DATA(ep->com.tdev), ep->l2t); |
| 1185 | put_ep(&ep->com); |
| 1186 | return CPL_RET_BUF_DONE; |
| 1187 | } |
| 1188 | |
| 1189 | static int listen_start(struct iwch_listen_ep *ep) |
| 1190 | { |
| 1191 | struct sk_buff *skb; |
| 1192 | struct cpl_pass_open_req *req; |
| 1193 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1194 | PDBG("%s ep %p\n", __func__, ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1195 | skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); |
| 1196 | if (!skb) { |
| 1197 | printk(KERN_ERR MOD "t3c_listen_start failed to alloc skb!\n"); |
| 1198 | return -ENOMEM; |
| 1199 | } |
| 1200 | |
| 1201 | req = (struct cpl_pass_open_req *) skb_put(skb, sizeof(*req)); |
| 1202 | req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); |
| 1203 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_PASS_OPEN_REQ, ep->stid)); |
| 1204 | req->local_port = ep->com.local_addr.sin_port; |
| 1205 | req->local_ip = ep->com.local_addr.sin_addr.s_addr; |
| 1206 | req->peer_port = 0; |
| 1207 | req->peer_ip = 0; |
| 1208 | req->peer_netmask = 0; |
| 1209 | req->opt0h = htonl(F_DELACK | F_TCAM_BYPASS); |
| 1210 | req->opt0l = htonl(V_RCV_BUFSIZ(rcv_win>>10)); |
| 1211 | req->opt1 = htonl(V_CONN_POLICY(CPL_CONN_POLICY_ASK)); |
| 1212 | |
| 1213 | skb->priority = 1; |
Steve Wise | 04b5d02 | 2009-03-30 08:37:56 -0700 | [diff] [blame] | 1214 | return iwch_cxgb3_ofld_send(ep->com.tdev, skb); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1215 | } |
| 1216 | |
| 1217 | static int pass_open_rpl(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) |
| 1218 | { |
| 1219 | struct iwch_listen_ep *ep = ctx; |
| 1220 | struct cpl_pass_open_rpl *rpl = cplhdr(skb); |
| 1221 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1222 | PDBG("%s ep %p status %d error %d\n", __func__, ep, |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1223 | rpl->status, status2errno(rpl->status)); |
| 1224 | ep->com.rpl_err = status2errno(rpl->status); |
| 1225 | ep->com.rpl_done = 1; |
| 1226 | wake_up(&ep->com.waitq); |
| 1227 | |
| 1228 | return CPL_RET_BUF_DONE; |
| 1229 | } |
| 1230 | |
| 1231 | static int listen_stop(struct iwch_listen_ep *ep) |
| 1232 | { |
| 1233 | struct sk_buff *skb; |
| 1234 | struct cpl_close_listserv_req *req; |
| 1235 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1236 | PDBG("%s ep %p\n", __func__, ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1237 | skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); |
| 1238 | if (!skb) { |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1239 | printk(KERN_ERR MOD "%s - failed to alloc skb\n", __func__); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1240 | return -ENOMEM; |
| 1241 | } |
| 1242 | req = (struct cpl_close_listserv_req *) skb_put(skb, sizeof(*req)); |
| 1243 | req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); |
Steve Wise | 60be4b5 | 2007-04-26 15:21:15 -0500 | [diff] [blame] | 1244 | req->cpu_idx = 0; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1245 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_CLOSE_LISTSRV_REQ, ep->stid)); |
| 1246 | skb->priority = 1; |
Steve Wise | 04b5d02 | 2009-03-30 08:37:56 -0700 | [diff] [blame] | 1247 | return iwch_cxgb3_ofld_send(ep->com.tdev, skb); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1248 | } |
| 1249 | |
| 1250 | static int close_listsrv_rpl(struct t3cdev *tdev, struct sk_buff *skb, |
| 1251 | void *ctx) |
| 1252 | { |
| 1253 | struct iwch_listen_ep *ep = ctx; |
| 1254 | struct cpl_close_listserv_rpl *rpl = cplhdr(skb); |
| 1255 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1256 | PDBG("%s ep %p\n", __func__, ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1257 | ep->com.rpl_err = status2errno(rpl->status); |
| 1258 | ep->com.rpl_done = 1; |
| 1259 | wake_up(&ep->com.waitq); |
| 1260 | return CPL_RET_BUF_DONE; |
| 1261 | } |
| 1262 | |
| 1263 | static void accept_cr(struct iwch_ep *ep, __be32 peer_ip, struct sk_buff *skb) |
| 1264 | { |
| 1265 | struct cpl_pass_accept_rpl *rpl; |
| 1266 | unsigned int mtu_idx; |
| 1267 | u32 opt0h, opt0l, opt2; |
| 1268 | int wscale; |
| 1269 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1270 | PDBG("%s ep %p\n", __func__, ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1271 | BUG_ON(skb_cloned(skb)); |
| 1272 | skb_trim(skb, sizeof(*rpl)); |
| 1273 | skb_get(skb); |
| 1274 | mtu_idx = find_best_mtu(T3C_DATA(ep->com.tdev), dst_mtu(ep->dst)); |
| 1275 | wscale = compute_wscale(rcv_win); |
| 1276 | opt0h = V_NAGLE(0) | |
| 1277 | V_NO_CONG(nocong) | |
| 1278 | V_KEEP_ALIVE(1) | |
| 1279 | F_TCAM_BYPASS | |
| 1280 | V_WND_SCALE(wscale) | |
| 1281 | V_MSS_IDX(mtu_idx) | |
| 1282 | V_L2T_IDX(ep->l2t->idx) | V_TX_CHANNEL(ep->l2t->smt_idx); |
| 1283 | opt0l = V_TOS((ep->tos >> 2) & M_TOS) | V_RCV_BUFSIZ(rcv_win>>10); |
Steve Wise | bec658f | 2010-09-18 19:38:21 -0500 | [diff] [blame] | 1284 | opt2 = F_RX_COALESCE_VALID | V_RX_COALESCE(0) | V_FLAVORS_VALID(1) | |
| 1285 | V_CONG_CONTROL_FLAVOR(cong_flavor); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1286 | |
| 1287 | rpl = cplhdr(skb); |
| 1288 | rpl->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); |
| 1289 | OPCODE_TID(rpl) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL, ep->hwtid)); |
| 1290 | rpl->peer_ip = peer_ip; |
| 1291 | rpl->opt0h = htonl(opt0h); |
| 1292 | rpl->opt0l_status = htonl(opt0l | CPL_PASS_OPEN_ACCEPT); |
| 1293 | rpl->opt2 = htonl(opt2); |
| 1294 | rpl->rsvd = rpl->opt2; /* workaround for HW bug */ |
| 1295 | skb->priority = CPL_PRIORITY_SETUP; |
Steve Wise | 04b5d02 | 2009-03-30 08:37:56 -0700 | [diff] [blame] | 1296 | iwch_l2t_send(ep->com.tdev, skb, ep->l2t); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1297 | |
| 1298 | return; |
| 1299 | } |
| 1300 | |
| 1301 | static void reject_cr(struct t3cdev *tdev, u32 hwtid, __be32 peer_ip, |
| 1302 | struct sk_buff *skb) |
| 1303 | { |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1304 | PDBG("%s t3cdev %p tid %u peer_ip %x\n", __func__, tdev, hwtid, |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1305 | peer_ip); |
| 1306 | BUG_ON(skb_cloned(skb)); |
| 1307 | skb_trim(skb, sizeof(struct cpl_tid_release)); |
| 1308 | skb_get(skb); |
| 1309 | |
Steve Wise | 8176d29 | 2008-01-24 16:30:16 -0600 | [diff] [blame] | 1310 | if (tdev->type != T3A) |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1311 | release_tid(tdev, hwtid, skb); |
| 1312 | else { |
| 1313 | struct cpl_pass_accept_rpl *rpl; |
| 1314 | |
| 1315 | rpl = cplhdr(skb); |
| 1316 | skb->priority = CPL_PRIORITY_SETUP; |
| 1317 | rpl->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); |
| 1318 | OPCODE_TID(rpl) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL, |
| 1319 | hwtid)); |
| 1320 | rpl->peer_ip = peer_ip; |
| 1321 | rpl->opt0h = htonl(F_TCAM_BYPASS); |
| 1322 | rpl->opt0l_status = htonl(CPL_PASS_OPEN_REJECT); |
| 1323 | rpl->opt2 = 0; |
| 1324 | rpl->rsvd = rpl->opt2; |
Steve Wise | 04b5d02 | 2009-03-30 08:37:56 -0700 | [diff] [blame] | 1325 | iwch_cxgb3_ofld_send(tdev, skb); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1326 | } |
| 1327 | } |
| 1328 | |
| 1329 | static int pass_accept_req(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) |
| 1330 | { |
| 1331 | struct iwch_ep *child_ep, *parent_ep = ctx; |
| 1332 | struct cpl_pass_accept_req *req = cplhdr(skb); |
| 1333 | unsigned int hwtid = GET_TID(req); |
| 1334 | struct dst_entry *dst; |
| 1335 | struct l2t_entry *l2t; |
| 1336 | struct rtable *rt; |
| 1337 | struct iff_mac tim; |
| 1338 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1339 | PDBG("%s parent ep %p tid %u\n", __func__, parent_ep, hwtid); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1340 | |
| 1341 | if (state_read(&parent_ep->com) != LISTEN) { |
| 1342 | printk(KERN_ERR "%s - listening ep not in LISTEN\n", |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1343 | __func__); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1344 | goto reject; |
| 1345 | } |
| 1346 | |
| 1347 | /* |
| 1348 | * Find the netdev for this connection request. |
| 1349 | */ |
| 1350 | tim.mac_addr = req->dst_mac; |
| 1351 | tim.vlan_tag = ntohs(req->vlan_tag); |
| 1352 | if (tdev->ctl(tdev, GET_IFF_FROM_MAC, &tim) < 0 || !tim.dev) { |
H Hartley Sweeten | eacc4d6 | 2010-01-07 01:17:27 -0800 | [diff] [blame] | 1353 | printk(KERN_ERR "%s bad dst mac %pM\n", |
| 1354 | __func__, req->dst_mac); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1355 | goto reject; |
| 1356 | } |
| 1357 | |
| 1358 | /* Find output route */ |
| 1359 | rt = find_route(tdev, |
| 1360 | req->local_ip, |
| 1361 | req->peer_ip, |
| 1362 | req->local_port, |
| 1363 | req->peer_port, G_PASS_OPEN_TOS(ntohl(req->tos_tid))); |
| 1364 | if (!rt) { |
| 1365 | printk(KERN_ERR MOD "%s - failed to find dst entry!\n", |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1366 | __func__); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1367 | goto reject; |
| 1368 | } |
Changli Gao | d8d1f30 | 2010-06-10 23:31:35 -0700 | [diff] [blame] | 1369 | dst = &rt->dst; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1370 | l2t = t3_l2t_get(tdev, dst->neighbour, dst->neighbour->dev); |
| 1371 | if (!l2t) { |
| 1372 | printk(KERN_ERR MOD "%s - failed to allocate l2t entry!\n", |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1373 | __func__); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1374 | dst_release(dst); |
| 1375 | goto reject; |
| 1376 | } |
| 1377 | child_ep = alloc_ep(sizeof(*child_ep), GFP_KERNEL); |
| 1378 | if (!child_ep) { |
| 1379 | printk(KERN_ERR MOD "%s - failed to allocate ep entry!\n", |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1380 | __func__); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1381 | l2t_release(L2DATA(tdev), l2t); |
| 1382 | dst_release(dst); |
| 1383 | goto reject; |
| 1384 | } |
| 1385 | state_set(&child_ep->com, CONNECTING); |
| 1386 | child_ep->com.tdev = tdev; |
| 1387 | child_ep->com.cm_id = NULL; |
| 1388 | child_ep->com.local_addr.sin_family = PF_INET; |
| 1389 | child_ep->com.local_addr.sin_port = req->local_port; |
| 1390 | child_ep->com.local_addr.sin_addr.s_addr = req->local_ip; |
| 1391 | child_ep->com.remote_addr.sin_family = PF_INET; |
| 1392 | child_ep->com.remote_addr.sin_port = req->peer_port; |
| 1393 | child_ep->com.remote_addr.sin_addr.s_addr = req->peer_ip; |
| 1394 | get_ep(&parent_ep->com); |
| 1395 | child_ep->parent_ep = parent_ep; |
| 1396 | child_ep->tos = G_PASS_OPEN_TOS(ntohl(req->tos_tid)); |
| 1397 | child_ep->l2t = l2t; |
| 1398 | child_ep->dst = dst; |
| 1399 | child_ep->hwtid = hwtid; |
| 1400 | init_timer(&child_ep->timer); |
| 1401 | cxgb3_insert_tid(tdev, &t3c_client, child_ep, hwtid); |
| 1402 | accept_cr(child_ep, req->peer_ip, skb); |
| 1403 | goto out; |
| 1404 | reject: |
| 1405 | reject_cr(tdev, hwtid, req->peer_ip, skb); |
| 1406 | out: |
| 1407 | return CPL_RET_BUF_DONE; |
| 1408 | } |
| 1409 | |
| 1410 | static int pass_establish(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) |
| 1411 | { |
| 1412 | struct iwch_ep *ep = ctx; |
| 1413 | struct cpl_pass_establish *req = cplhdr(skb); |
| 1414 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1415 | PDBG("%s ep %p\n", __func__, ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1416 | ep->snd_seq = ntohl(req->snd_isn); |
Steve Wise | de3d353 | 2007-05-14 13:27:27 -0500 | [diff] [blame] | 1417 | ep->rcv_seq = ntohl(req->rcv_isn); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1418 | |
| 1419 | set_emss(ep, ntohs(req->tcp_opt)); |
| 1420 | |
| 1421 | dst_confirm(ep->dst); |
| 1422 | state_set(&ep->com, MPA_REQ_WAIT); |
| 1423 | start_ep_timer(ep); |
| 1424 | |
| 1425 | return CPL_RET_BUF_DONE; |
| 1426 | } |
| 1427 | |
| 1428 | static int peer_close(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) |
| 1429 | { |
| 1430 | struct iwch_ep *ep = ctx; |
| 1431 | struct iwch_qp_attributes attrs; |
| 1432 | unsigned long flags; |
| 1433 | int disconnect = 1; |
| 1434 | int release = 0; |
| 1435 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1436 | PDBG("%s ep %p\n", __func__, ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1437 | dst_confirm(ep->dst); |
| 1438 | |
| 1439 | spin_lock_irqsave(&ep->com.lock, flags); |
| 1440 | switch (ep->com.state) { |
| 1441 | case MPA_REQ_WAIT: |
| 1442 | __state_set(&ep->com, CLOSING); |
| 1443 | break; |
| 1444 | case MPA_REQ_SENT: |
| 1445 | __state_set(&ep->com, CLOSING); |
| 1446 | connect_reply_upcall(ep, -ECONNRESET); |
| 1447 | break; |
| 1448 | case MPA_REQ_RCVD: |
| 1449 | |
| 1450 | /* |
| 1451 | * We're gonna mark this puppy DEAD, but keep |
| 1452 | * the reference on it until the ULP accepts or |
Steve Wise | a52bf98 | 2009-09-05 20:22:38 -0700 | [diff] [blame] | 1453 | * rejects the CR. Also wake up anyone waiting |
| 1454 | * in rdma connection migration (see iwch_accept_cr()). |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1455 | */ |
| 1456 | __state_set(&ep->com, CLOSING); |
Steve Wise | a52bf98 | 2009-09-05 20:22:38 -0700 | [diff] [blame] | 1457 | ep->com.rpl_done = 1; |
| 1458 | ep->com.rpl_err = -ECONNRESET; |
| 1459 | PDBG("waking up ep %p\n", ep); |
| 1460 | wake_up(&ep->com.waitq); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1461 | break; |
| 1462 | case MPA_REP_SENT: |
| 1463 | __state_set(&ep->com, CLOSING); |
| 1464 | ep->com.rpl_done = 1; |
| 1465 | ep->com.rpl_err = -ECONNRESET; |
| 1466 | PDBG("waking up ep %p\n", ep); |
| 1467 | wake_up(&ep->com.waitq); |
| 1468 | break; |
| 1469 | case FPDU_MODE: |
Steve Wise | 42e3175 | 2007-03-06 14:43:56 -0600 | [diff] [blame] | 1470 | start_ep_timer(ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1471 | __state_set(&ep->com, CLOSING); |
| 1472 | attrs.next_state = IWCH_QP_STATE_CLOSING; |
| 1473 | iwch_modify_qp(ep->com.qp->rhp, ep->com.qp, |
| 1474 | IWCH_QP_ATTR_NEXT_STATE, &attrs, 1); |
| 1475 | peer_close_upcall(ep); |
| 1476 | break; |
| 1477 | case ABORTING: |
| 1478 | disconnect = 0; |
| 1479 | break; |
| 1480 | case CLOSING: |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1481 | __state_set(&ep->com, MORIBUND); |
| 1482 | disconnect = 0; |
| 1483 | break; |
| 1484 | case MORIBUND: |
| 1485 | stop_ep_timer(ep); |
| 1486 | if (ep->com.cm_id && ep->com.qp) { |
| 1487 | attrs.next_state = IWCH_QP_STATE_IDLE; |
| 1488 | iwch_modify_qp(ep->com.qp->rhp, ep->com.qp, |
| 1489 | IWCH_QP_ATTR_NEXT_STATE, &attrs, 1); |
| 1490 | } |
| 1491 | close_complete_upcall(ep); |
| 1492 | __state_set(&ep->com, DEAD); |
| 1493 | release = 1; |
| 1494 | disconnect = 0; |
| 1495 | break; |
| 1496 | case DEAD: |
| 1497 | disconnect = 0; |
| 1498 | break; |
| 1499 | default: |
| 1500 | BUG_ON(1); |
| 1501 | } |
| 1502 | spin_unlock_irqrestore(&ep->com.lock, flags); |
| 1503 | if (disconnect) |
| 1504 | iwch_ep_disconnect(ep, 0, GFP_KERNEL); |
| 1505 | if (release) |
| 1506 | release_ep_resources(ep); |
| 1507 | return CPL_RET_BUF_DONE; |
| 1508 | } |
| 1509 | |
| 1510 | /* |
| 1511 | * Returns whether an ABORT_REQ_RSS message is a negative advice. |
| 1512 | */ |
Adrian Bunk | 2b54035 | 2007-02-21 11:52:49 +0100 | [diff] [blame] | 1513 | static int is_neg_adv_abort(unsigned int status) |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1514 | { |
| 1515 | return status == CPL_ERR_RTX_NEG_ADVICE || |
| 1516 | status == CPL_ERR_PERSIST_NEG_ADVICE; |
| 1517 | } |
| 1518 | |
| 1519 | static int peer_abort(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) |
| 1520 | { |
| 1521 | struct cpl_abort_req_rss *req = cplhdr(skb); |
| 1522 | struct iwch_ep *ep = ctx; |
| 1523 | struct cpl_abort_rpl *rpl; |
| 1524 | struct sk_buff *rpl_skb; |
| 1525 | struct iwch_qp_attributes attrs; |
| 1526 | int ret; |
Steve Wise | 989a178 | 2008-04-29 13:46:51 -0700 | [diff] [blame] | 1527 | int release = 0; |
| 1528 | unsigned long flags; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1529 | |
Steve Wise | 1580367 | 2007-06-19 09:27:48 -0500 | [diff] [blame] | 1530 | if (is_neg_adv_abort(req->status)) { |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1531 | PDBG("%s neg_adv_abort ep %p tid %d\n", __func__, ep, |
Steve Wise | 1580367 | 2007-06-19 09:27:48 -0500 | [diff] [blame] | 1532 | ep->hwtid); |
| 1533 | t3_l2t_send_event(ep->com.tdev, ep->l2t); |
| 1534 | return CPL_RET_BUF_DONE; |
| 1535 | } |
| 1536 | |
Steve Wise | aff9e39 | 2007-04-26 15:21:20 -0500 | [diff] [blame] | 1537 | /* |
| 1538 | * We get 2 peer aborts from the HW. The first one must |
| 1539 | * be ignored except for scribbling that we need one more. |
| 1540 | */ |
Steve Wise | 6e47fe4 | 2009-09-05 20:22:38 -0700 | [diff] [blame] | 1541 | if (!test_and_set_bit(PEER_ABORT_IN_PROGRESS, &ep->com.flags)) { |
Steve Wise | aff9e39 | 2007-04-26 15:21:20 -0500 | [diff] [blame] | 1542 | return CPL_RET_BUF_DONE; |
| 1543 | } |
| 1544 | |
Steve Wise | 989a178 | 2008-04-29 13:46:51 -0700 | [diff] [blame] | 1545 | spin_lock_irqsave(&ep->com.lock, flags); |
| 1546 | PDBG("%s ep %p state %u\n", __func__, ep, ep->com.state); |
| 1547 | switch (ep->com.state) { |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1548 | case CONNECTING: |
| 1549 | break; |
| 1550 | case MPA_REQ_WAIT: |
Steve Wise | adf376b | 2007-03-06 14:44:01 -0600 | [diff] [blame] | 1551 | stop_ep_timer(ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1552 | break; |
| 1553 | case MPA_REQ_SENT: |
Steve Wise | adf376b | 2007-03-06 14:44:01 -0600 | [diff] [blame] | 1554 | stop_ep_timer(ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1555 | connect_reply_upcall(ep, -ECONNRESET); |
| 1556 | break; |
| 1557 | case MPA_REP_SENT: |
| 1558 | ep->com.rpl_done = 1; |
| 1559 | ep->com.rpl_err = -ECONNRESET; |
| 1560 | PDBG("waking up ep %p\n", ep); |
| 1561 | wake_up(&ep->com.waitq); |
| 1562 | break; |
| 1563 | case MPA_REQ_RCVD: |
| 1564 | |
| 1565 | /* |
| 1566 | * We're gonna mark this puppy DEAD, but keep |
| 1567 | * the reference on it until the ULP accepts or |
Steve Wise | a52bf98 | 2009-09-05 20:22:38 -0700 | [diff] [blame] | 1568 | * rejects the CR. Also wake up anyone waiting |
| 1569 | * in rdma connection migration (see iwch_accept_cr()). |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1570 | */ |
Steve Wise | a52bf98 | 2009-09-05 20:22:38 -0700 | [diff] [blame] | 1571 | ep->com.rpl_done = 1; |
| 1572 | ep->com.rpl_err = -ECONNRESET; |
| 1573 | PDBG("waking up ep %p\n", ep); |
| 1574 | wake_up(&ep->com.waitq); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1575 | break; |
| 1576 | case MORIBUND: |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1577 | case CLOSING: |
Steve Wise | 42e3175 | 2007-03-06 14:43:56 -0600 | [diff] [blame] | 1578 | stop_ep_timer(ep); |
| 1579 | /*FALLTHROUGH*/ |
| 1580 | case FPDU_MODE: |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1581 | if (ep->com.cm_id && ep->com.qp) { |
| 1582 | attrs.next_state = IWCH_QP_STATE_ERROR; |
| 1583 | ret = iwch_modify_qp(ep->com.qp->rhp, |
| 1584 | ep->com.qp, IWCH_QP_ATTR_NEXT_STATE, |
| 1585 | &attrs, 1); |
| 1586 | if (ret) |
| 1587 | printk(KERN_ERR MOD |
| 1588 | "%s - qp <- error failed!\n", |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1589 | __func__); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1590 | } |
| 1591 | peer_abort_upcall(ep); |
| 1592 | break; |
| 1593 | case ABORTING: |
| 1594 | break; |
| 1595 | case DEAD: |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1596 | PDBG("%s PEER_ABORT IN DEAD STATE!!!!\n", __func__); |
Steve Wise | 989a178 | 2008-04-29 13:46:51 -0700 | [diff] [blame] | 1597 | spin_unlock_irqrestore(&ep->com.lock, flags); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1598 | return CPL_RET_BUF_DONE; |
| 1599 | default: |
| 1600 | BUG_ON(1); |
| 1601 | break; |
| 1602 | } |
| 1603 | dst_confirm(ep->dst); |
Steve Wise | 989a178 | 2008-04-29 13:46:51 -0700 | [diff] [blame] | 1604 | if (ep->com.state != ABORTING) { |
| 1605 | __state_set(&ep->com, DEAD); |
| 1606 | release = 1; |
| 1607 | } |
| 1608 | spin_unlock_irqrestore(&ep->com.lock, flags); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1609 | |
| 1610 | rpl_skb = get_skb(skb, sizeof(*rpl), GFP_KERNEL); |
| 1611 | if (!rpl_skb) { |
| 1612 | printk(KERN_ERR MOD "%s - cannot allocate skb!\n", |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1613 | __func__); |
Steve Wise | 989a178 | 2008-04-29 13:46:51 -0700 | [diff] [blame] | 1614 | release = 1; |
| 1615 | goto out; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1616 | } |
| 1617 | rpl_skb->priority = CPL_PRIORITY_DATA; |
| 1618 | rpl = (struct cpl_abort_rpl *) skb_put(rpl_skb, sizeof(*rpl)); |
| 1619 | rpl->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_HOST_ABORT_CON_RPL)); |
| 1620 | rpl->wr.wr_lo = htonl(V_WR_TID(ep->hwtid)); |
| 1621 | OPCODE_TID(rpl) = htonl(MK_OPCODE_TID(CPL_ABORT_RPL, ep->hwtid)); |
| 1622 | rpl->cmd = CPL_ABORT_NO_RST; |
Steve Wise | 04b5d02 | 2009-03-30 08:37:56 -0700 | [diff] [blame] | 1623 | iwch_cxgb3_ofld_send(ep->com.tdev, rpl_skb); |
Steve Wise | 989a178 | 2008-04-29 13:46:51 -0700 | [diff] [blame] | 1624 | out: |
| 1625 | if (release) |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1626 | release_ep_resources(ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1627 | return CPL_RET_BUF_DONE; |
| 1628 | } |
| 1629 | |
| 1630 | static int close_con_rpl(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) |
| 1631 | { |
| 1632 | struct iwch_ep *ep = ctx; |
| 1633 | struct iwch_qp_attributes attrs; |
| 1634 | unsigned long flags; |
| 1635 | int release = 0; |
| 1636 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1637 | PDBG("%s ep %p\n", __func__, ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1638 | BUG_ON(!ep); |
| 1639 | |
| 1640 | /* The cm_id may be null if we failed to connect */ |
| 1641 | spin_lock_irqsave(&ep->com.lock, flags); |
| 1642 | switch (ep->com.state) { |
| 1643 | case CLOSING: |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1644 | __state_set(&ep->com, MORIBUND); |
| 1645 | break; |
| 1646 | case MORIBUND: |
| 1647 | stop_ep_timer(ep); |
| 1648 | if ((ep->com.cm_id) && (ep->com.qp)) { |
| 1649 | attrs.next_state = IWCH_QP_STATE_IDLE; |
| 1650 | iwch_modify_qp(ep->com.qp->rhp, |
| 1651 | ep->com.qp, |
| 1652 | IWCH_QP_ATTR_NEXT_STATE, |
| 1653 | &attrs, 1); |
| 1654 | } |
| 1655 | close_complete_upcall(ep); |
| 1656 | __state_set(&ep->com, DEAD); |
| 1657 | release = 1; |
| 1658 | break; |
Steve Wise | 42e3175 | 2007-03-06 14:43:56 -0600 | [diff] [blame] | 1659 | case ABORTING: |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1660 | case DEAD: |
Steve Wise | c4d4977 | 2008-05-02 10:57:09 -0700 | [diff] [blame] | 1661 | break; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1662 | default: |
| 1663 | BUG_ON(1); |
| 1664 | break; |
| 1665 | } |
| 1666 | spin_unlock_irqrestore(&ep->com.lock, flags); |
| 1667 | if (release) |
| 1668 | release_ep_resources(ep); |
| 1669 | return CPL_RET_BUF_DONE; |
| 1670 | } |
| 1671 | |
| 1672 | /* |
| 1673 | * T3A does 3 things when a TERM is received: |
| 1674 | * 1) send up a CPL_RDMA_TERMINATE message with the TERM packet |
| 1675 | * 2) generate an async event on the QP with the TERMINATE opcode |
| 1676 | * 3) post a TERMINATE opcde cqe into the associated CQ. |
| 1677 | * |
| 1678 | * For (1), we save the message in the qp for later consumer consumption. |
| 1679 | * For (2), we move the QP into TERMINATE, post a QP event and disconnect. |
| 1680 | * For (3), we toss the CQE in cxio_poll_cq(). |
| 1681 | * |
| 1682 | * terminate() handles case (1)... |
| 1683 | */ |
| 1684 | static int terminate(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) |
| 1685 | { |
| 1686 | struct iwch_ep *ep = ctx; |
| 1687 | |
Steve Wise | 42fb61f | 2009-02-10 16:38:57 -0800 | [diff] [blame] | 1688 | if (state_read(&ep->com) != FPDU_MODE) |
| 1689 | return CPL_RET_BUF_DONE; |
| 1690 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1691 | PDBG("%s ep %p\n", __func__, ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1692 | skb_pull(skb, sizeof(struct cpl_rdma_terminate)); |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1693 | PDBG("%s saving %d bytes of term msg\n", __func__, skb->len); |
Arnaldo Carvalho de Melo | d626f62 | 2007-03-27 18:55:52 -0300 | [diff] [blame] | 1694 | skb_copy_from_linear_data(skb, ep->com.qp->attr.terminate_buffer, |
| 1695 | skb->len); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1696 | ep->com.qp->attr.terminate_msg_len = skb->len; |
| 1697 | ep->com.qp->attr.is_terminate_local = 0; |
| 1698 | return CPL_RET_BUF_DONE; |
| 1699 | } |
| 1700 | |
| 1701 | static int ec_status(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) |
| 1702 | { |
| 1703 | struct cpl_rdma_ec_status *rep = cplhdr(skb); |
| 1704 | struct iwch_ep *ep = ctx; |
| 1705 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1706 | PDBG("%s ep %p tid %u status %d\n", __func__, ep, ep->hwtid, |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1707 | rep->status); |
| 1708 | if (rep->status) { |
| 1709 | struct iwch_qp_attributes attrs; |
| 1710 | |
| 1711 | printk(KERN_ERR MOD "%s BAD CLOSE - Aborting tid %u\n", |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1712 | __func__, ep->hwtid); |
Steve Wise | 2f23673 | 2007-02-21 14:45:39 -0600 | [diff] [blame] | 1713 | stop_ep_timer(ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1714 | attrs.next_state = IWCH_QP_STATE_ERROR; |
| 1715 | iwch_modify_qp(ep->com.qp->rhp, |
| 1716 | ep->com.qp, IWCH_QP_ATTR_NEXT_STATE, |
| 1717 | &attrs, 1); |
| 1718 | abort_connection(ep, NULL, GFP_KERNEL); |
| 1719 | } |
| 1720 | return CPL_RET_BUF_DONE; |
| 1721 | } |
| 1722 | |
| 1723 | static void ep_timeout(unsigned long arg) |
| 1724 | { |
| 1725 | struct iwch_ep *ep = (struct iwch_ep *)arg; |
| 1726 | struct iwch_qp_attributes attrs; |
| 1727 | unsigned long flags; |
Steve Wise | 989a178 | 2008-04-29 13:46:51 -0700 | [diff] [blame] | 1728 | int abort = 1; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1729 | |
| 1730 | spin_lock_irqsave(&ep->com.lock, flags); |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1731 | PDBG("%s ep %p tid %u state %d\n", __func__, ep, ep->hwtid, |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1732 | ep->com.state); |
| 1733 | switch (ep->com.state) { |
| 1734 | case MPA_REQ_SENT: |
Steve Wise | 989a178 | 2008-04-29 13:46:51 -0700 | [diff] [blame] | 1735 | __state_set(&ep->com, ABORTING); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1736 | connect_reply_upcall(ep, -ETIMEDOUT); |
| 1737 | break; |
| 1738 | case MPA_REQ_WAIT: |
Steve Wise | 989a178 | 2008-04-29 13:46:51 -0700 | [diff] [blame] | 1739 | __state_set(&ep->com, ABORTING); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1740 | break; |
Steve Wise | 42e3175 | 2007-03-06 14:43:56 -0600 | [diff] [blame] | 1741 | case CLOSING: |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1742 | case MORIBUND: |
| 1743 | if (ep->com.cm_id && ep->com.qp) { |
| 1744 | attrs.next_state = IWCH_QP_STATE_ERROR; |
| 1745 | iwch_modify_qp(ep->com.qp->rhp, |
| 1746 | ep->com.qp, IWCH_QP_ATTR_NEXT_STATE, |
| 1747 | &attrs, 1); |
| 1748 | } |
Steve Wise | 989a178 | 2008-04-29 13:46:51 -0700 | [diff] [blame] | 1749 | __state_set(&ep->com, ABORTING); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1750 | break; |
| 1751 | default: |
Steve Wise | 989a178 | 2008-04-29 13:46:51 -0700 | [diff] [blame] | 1752 | printk(KERN_ERR "%s unexpected state ep %p state %u\n", |
| 1753 | __func__, ep, ep->com.state); |
| 1754 | WARN_ON(1); |
| 1755 | abort = 0; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1756 | } |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1757 | spin_unlock_irqrestore(&ep->com.lock, flags); |
Steve Wise | 989a178 | 2008-04-29 13:46:51 -0700 | [diff] [blame] | 1758 | if (abort) |
| 1759 | abort_connection(ep, NULL, GFP_ATOMIC); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1760 | put_ep(&ep->com); |
| 1761 | } |
| 1762 | |
| 1763 | int iwch_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) |
| 1764 | { |
| 1765 | int err; |
| 1766 | struct iwch_ep *ep = to_ep(cm_id); |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1767 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1768 | |
| 1769 | if (state_read(&ep->com) == DEAD) { |
| 1770 | put_ep(&ep->com); |
| 1771 | return -ECONNRESET; |
| 1772 | } |
| 1773 | BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1774 | if (mpa_rev == 0) |
| 1775 | abort_connection(ep, NULL, GFP_KERNEL); |
| 1776 | else { |
| 1777 | err = send_mpa_reject(ep, pdata, pdata_len); |
Steve Wise | 7d526e6 | 2007-03-05 17:32:46 -0600 | [diff] [blame] | 1778 | err = iwch_ep_disconnect(ep, 0, GFP_KERNEL); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1779 | } |
Steve Wise | 6e47fe4 | 2009-09-05 20:22:38 -0700 | [diff] [blame] | 1780 | put_ep(&ep->com); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1781 | return 0; |
| 1782 | } |
| 1783 | |
| 1784 | int iwch_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) |
| 1785 | { |
| 1786 | int err; |
| 1787 | struct iwch_qp_attributes attrs; |
| 1788 | enum iwch_qp_attr_mask mask; |
| 1789 | struct iwch_ep *ep = to_ep(cm_id); |
| 1790 | struct iwch_dev *h = to_iwch_dev(cm_id->device); |
| 1791 | struct iwch_qp *qp = get_qhp(h, conn_param->qpn); |
| 1792 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1793 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
Steve Wise | 6e47fe4 | 2009-09-05 20:22:38 -0700 | [diff] [blame] | 1794 | if (state_read(&ep->com) == DEAD) { |
| 1795 | err = -ECONNRESET; |
| 1796 | goto err; |
| 1797 | } |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1798 | |
| 1799 | BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD); |
| 1800 | BUG_ON(!qp); |
| 1801 | |
| 1802 | if ((conn_param->ord > qp->rhp->attr.max_rdma_read_qp_depth) || |
| 1803 | (conn_param->ird > qp->rhp->attr.max_rdma_reads_per_qp)) { |
| 1804 | abort_connection(ep, NULL, GFP_KERNEL); |
Steve Wise | 6e47fe4 | 2009-09-05 20:22:38 -0700 | [diff] [blame] | 1805 | err = -EINVAL; |
| 1806 | goto err; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1807 | } |
| 1808 | |
| 1809 | cm_id->add_ref(cm_id); |
| 1810 | ep->com.cm_id = cm_id; |
| 1811 | ep->com.qp = qp; |
| 1812 | |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1813 | ep->ird = conn_param->ird; |
| 1814 | ep->ord = conn_param->ord; |
Steve Wise | 96ac7e8 | 2009-04-20 13:53:15 -0700 | [diff] [blame] | 1815 | |
| 1816 | if (peer2peer && ep->ird == 0) |
| 1817 | ep->ird = 1; |
| 1818 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1819 | PDBG("%s %d ird %d ord %d\n", __func__, __LINE__, ep->ird, ep->ord); |
Steve Wise | de3d353 | 2007-05-14 13:27:27 -0500 | [diff] [blame] | 1820 | |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1821 | /* bind QP to EP and move to RTS */ |
| 1822 | attrs.mpa_attr = ep->mpa_attr; |
Roland Dreier | 1f71f50 | 2008-03-28 10:28:17 -0700 | [diff] [blame] | 1823 | attrs.max_ird = ep->ird; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1824 | attrs.max_ord = ep->ord; |
| 1825 | attrs.llp_stream_handle = ep; |
| 1826 | attrs.next_state = IWCH_QP_STATE_RTS; |
| 1827 | |
| 1828 | /* bind QP and TID with INIT_WR */ |
| 1829 | mask = IWCH_QP_ATTR_NEXT_STATE | |
| 1830 | IWCH_QP_ATTR_LLP_STREAM_HANDLE | |
| 1831 | IWCH_QP_ATTR_MPA_ATTR | |
| 1832 | IWCH_QP_ATTR_MAX_IRD | |
| 1833 | IWCH_QP_ATTR_MAX_ORD; |
| 1834 | |
| 1835 | err = iwch_modify_qp(ep->com.qp->rhp, |
| 1836 | ep->com.qp, mask, &attrs, 1); |
Steve Wise | de3d353 | 2007-05-14 13:27:27 -0500 | [diff] [blame] | 1837 | if (err) |
Steve Wise | 6e47fe4 | 2009-09-05 20:22:38 -0700 | [diff] [blame] | 1838 | goto err1; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1839 | |
Steve Wise | f8b0dfd | 2008-04-29 13:46:52 -0700 | [diff] [blame] | 1840 | /* if needed, wait for wr_ack */ |
| 1841 | if (iwch_rqes_posted(qp)) { |
| 1842 | wait_event(ep->com.waitq, ep->com.rpl_done); |
| 1843 | err = ep->com.rpl_err; |
| 1844 | if (err) |
Steve Wise | 6e47fe4 | 2009-09-05 20:22:38 -0700 | [diff] [blame] | 1845 | goto err1; |
Steve Wise | f8b0dfd | 2008-04-29 13:46:52 -0700 | [diff] [blame] | 1846 | } |
| 1847 | |
Steve Wise | de3d353 | 2007-05-14 13:27:27 -0500 | [diff] [blame] | 1848 | err = send_mpa_reply(ep, conn_param->private_data, |
| 1849 | conn_param->private_data_len); |
| 1850 | if (err) |
Steve Wise | 6e47fe4 | 2009-09-05 20:22:38 -0700 | [diff] [blame] | 1851 | goto err1; |
Steve Wise | de3d353 | 2007-05-14 13:27:27 -0500 | [diff] [blame] | 1852 | |
Steve Wise | de3d353 | 2007-05-14 13:27:27 -0500 | [diff] [blame] | 1853 | |
| 1854 | state_set(&ep->com, FPDU_MODE); |
| 1855 | established_upcall(ep); |
| 1856 | put_ep(&ep->com); |
| 1857 | return 0; |
Steve Wise | 6e47fe4 | 2009-09-05 20:22:38 -0700 | [diff] [blame] | 1858 | err1: |
Steve Wise | de3d353 | 2007-05-14 13:27:27 -0500 | [diff] [blame] | 1859 | ep->com.cm_id = NULL; |
| 1860 | ep->com.qp = NULL; |
| 1861 | cm_id->rem_ref(cm_id); |
Steve Wise | 6e47fe4 | 2009-09-05 20:22:38 -0700 | [diff] [blame] | 1862 | err: |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1863 | put_ep(&ep->com); |
| 1864 | return err; |
| 1865 | } |
| 1866 | |
Steve Wise | 8704e9a | 2008-02-12 16:09:29 -0600 | [diff] [blame] | 1867 | static int is_loopback_dst(struct iw_cm_id *cm_id) |
| 1868 | { |
| 1869 | struct net_device *dev; |
| 1870 | |
| 1871 | dev = ip_dev_find(&init_net, cm_id->remote_addr.sin_addr.s_addr); |
| 1872 | if (!dev) |
| 1873 | return 0; |
| 1874 | dev_put(dev); |
| 1875 | return 1; |
| 1876 | } |
| 1877 | |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1878 | int iwch_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) |
| 1879 | { |
| 1880 | int err = 0; |
| 1881 | struct iwch_dev *h = to_iwch_dev(cm_id->device); |
| 1882 | struct iwch_ep *ep; |
| 1883 | struct rtable *rt; |
| 1884 | |
Steve Wise | 8704e9a | 2008-02-12 16:09:29 -0600 | [diff] [blame] | 1885 | if (is_loopback_dst(cm_id)) { |
| 1886 | err = -ENOSYS; |
| 1887 | goto out; |
| 1888 | } |
| 1889 | |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1890 | ep = alloc_ep(sizeof(*ep), GFP_KERNEL); |
| 1891 | if (!ep) { |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1892 | printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1893 | err = -ENOMEM; |
| 1894 | goto out; |
| 1895 | } |
| 1896 | init_timer(&ep->timer); |
| 1897 | ep->plen = conn_param->private_data_len; |
| 1898 | if (ep->plen) |
| 1899 | memcpy(ep->mpa_pkt + sizeof(struct mpa_message), |
| 1900 | conn_param->private_data, ep->plen); |
| 1901 | ep->ird = conn_param->ird; |
| 1902 | ep->ord = conn_param->ord; |
Steve Wise | 96ac7e8 | 2009-04-20 13:53:15 -0700 | [diff] [blame] | 1903 | |
| 1904 | if (peer2peer && ep->ord == 0) |
| 1905 | ep->ord = 1; |
| 1906 | |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1907 | ep->com.tdev = h->rdev.t3cdev_p; |
| 1908 | |
| 1909 | cm_id->add_ref(cm_id); |
| 1910 | ep->com.cm_id = cm_id; |
| 1911 | ep->com.qp = get_qhp(h, conn_param->qpn); |
| 1912 | BUG_ON(!ep->com.qp); |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1913 | PDBG("%s qpn 0x%x qp %p cm_id %p\n", __func__, conn_param->qpn, |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1914 | ep->com.qp, cm_id); |
| 1915 | |
| 1916 | /* |
| 1917 | * Allocate an active TID to initiate a TCP connection. |
| 1918 | */ |
| 1919 | ep->atid = cxgb3_alloc_atid(h->rdev.t3cdev_p, &t3c_client, ep); |
| 1920 | if (ep->atid == -1) { |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1921 | printk(KERN_ERR MOD "%s - cannot alloc atid.\n", __func__); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1922 | err = -ENOMEM; |
| 1923 | goto fail2; |
| 1924 | } |
| 1925 | |
| 1926 | /* find a route */ |
| 1927 | rt = find_route(h->rdev.t3cdev_p, |
| 1928 | cm_id->local_addr.sin_addr.s_addr, |
| 1929 | cm_id->remote_addr.sin_addr.s_addr, |
| 1930 | cm_id->local_addr.sin_port, |
| 1931 | cm_id->remote_addr.sin_port, IPTOS_LOWDELAY); |
| 1932 | if (!rt) { |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1933 | printk(KERN_ERR MOD "%s - cannot find route.\n", __func__); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1934 | err = -EHOSTUNREACH; |
| 1935 | goto fail3; |
| 1936 | } |
Changli Gao | d8d1f30 | 2010-06-10 23:31:35 -0700 | [diff] [blame] | 1937 | ep->dst = &rt->dst; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1938 | |
| 1939 | /* get a l2t entry */ |
| 1940 | ep->l2t = t3_l2t_get(ep->com.tdev, ep->dst->neighbour, |
| 1941 | ep->dst->neighbour->dev); |
| 1942 | if (!ep->l2t) { |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1943 | printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __func__); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1944 | err = -ENOMEM; |
| 1945 | goto fail4; |
| 1946 | } |
| 1947 | |
| 1948 | state_set(&ep->com, CONNECTING); |
| 1949 | ep->tos = IPTOS_LOWDELAY; |
| 1950 | ep->com.local_addr = cm_id->local_addr; |
| 1951 | ep->com.remote_addr = cm_id->remote_addr; |
| 1952 | |
| 1953 | /* send connect request to rnic */ |
| 1954 | err = send_connect(ep); |
| 1955 | if (!err) |
| 1956 | goto out; |
| 1957 | |
| 1958 | l2t_release(L2DATA(h->rdev.t3cdev_p), ep->l2t); |
| 1959 | fail4: |
| 1960 | dst_release(ep->dst); |
| 1961 | fail3: |
| 1962 | cxgb3_free_atid(ep->com.tdev, ep->atid); |
| 1963 | fail2: |
Steve Wise | dc35fac | 2008-10-15 10:50:34 -0700 | [diff] [blame] | 1964 | cm_id->rem_ref(cm_id); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1965 | put_ep(&ep->com); |
| 1966 | out: |
| 1967 | return err; |
| 1968 | } |
| 1969 | |
| 1970 | int iwch_create_listen(struct iw_cm_id *cm_id, int backlog) |
| 1971 | { |
| 1972 | int err = 0; |
| 1973 | struct iwch_dev *h = to_iwch_dev(cm_id->device); |
| 1974 | struct iwch_listen_ep *ep; |
| 1975 | |
| 1976 | |
| 1977 | might_sleep(); |
| 1978 | |
| 1979 | ep = alloc_ep(sizeof(*ep), GFP_KERNEL); |
| 1980 | if (!ep) { |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1981 | printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1982 | err = -ENOMEM; |
| 1983 | goto fail1; |
| 1984 | } |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1985 | PDBG("%s ep %p\n", __func__, ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1986 | ep->com.tdev = h->rdev.t3cdev_p; |
| 1987 | cm_id->add_ref(cm_id); |
| 1988 | ep->com.cm_id = cm_id; |
| 1989 | ep->backlog = backlog; |
| 1990 | ep->com.local_addr = cm_id->local_addr; |
| 1991 | |
| 1992 | /* |
| 1993 | * Allocate a server TID. |
| 1994 | */ |
| 1995 | ep->stid = cxgb3_alloc_stid(h->rdev.t3cdev_p, &t3c_client, ep); |
| 1996 | if (ep->stid == -1) { |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 1997 | printk(KERN_ERR MOD "%s - cannot alloc atid.\n", __func__); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1998 | err = -ENOMEM; |
| 1999 | goto fail2; |
| 2000 | } |
| 2001 | |
| 2002 | state_set(&ep->com, LISTEN); |
| 2003 | err = listen_start(ep); |
| 2004 | if (err) |
| 2005 | goto fail3; |
| 2006 | |
| 2007 | /* wait for pass_open_rpl */ |
| 2008 | wait_event(ep->com.waitq, ep->com.rpl_done); |
| 2009 | err = ep->com.rpl_err; |
| 2010 | if (!err) { |
| 2011 | cm_id->provider_data = ep; |
| 2012 | goto out; |
| 2013 | } |
| 2014 | fail3: |
| 2015 | cxgb3_free_stid(ep->com.tdev, ep->stid); |
| 2016 | fail2: |
Steve Wise | 1b07db7 | 2007-07-11 13:04:35 -0500 | [diff] [blame] | 2017 | cm_id->rem_ref(cm_id); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 2018 | put_ep(&ep->com); |
| 2019 | fail1: |
| 2020 | out: |
| 2021 | return err; |
| 2022 | } |
| 2023 | |
| 2024 | int iwch_destroy_listen(struct iw_cm_id *cm_id) |
| 2025 | { |
| 2026 | int err; |
| 2027 | struct iwch_listen_ep *ep = to_listen_ep(cm_id); |
| 2028 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 2029 | PDBG("%s ep %p\n", __func__, ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 2030 | |
| 2031 | might_sleep(); |
| 2032 | state_set(&ep->com, DEAD); |
| 2033 | ep->com.rpl_done = 0; |
| 2034 | ep->com.rpl_err = 0; |
| 2035 | err = listen_stop(ep); |
Steve Wise | 04b5d02 | 2009-03-30 08:37:56 -0700 | [diff] [blame] | 2036 | if (err) |
| 2037 | goto done; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 2038 | wait_event(ep->com.waitq, ep->com.rpl_done); |
| 2039 | cxgb3_free_stid(ep->com.tdev, ep->stid); |
Steve Wise | 04b5d02 | 2009-03-30 08:37:56 -0700 | [diff] [blame] | 2040 | done: |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 2041 | err = ep->com.rpl_err; |
| 2042 | cm_id->rem_ref(cm_id); |
| 2043 | put_ep(&ep->com); |
| 2044 | return err; |
| 2045 | } |
| 2046 | |
| 2047 | int iwch_ep_disconnect(struct iwch_ep *ep, int abrupt, gfp_t gfp) |
| 2048 | { |
| 2049 | int ret=0; |
| 2050 | unsigned long flags; |
| 2051 | int close = 0; |
Steve Wise | 04b5d02 | 2009-03-30 08:37:56 -0700 | [diff] [blame] | 2052 | int fatal = 0; |
| 2053 | struct t3cdev *tdev; |
| 2054 | struct cxio_rdev *rdev; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 2055 | |
| 2056 | spin_lock_irqsave(&ep->com.lock, flags); |
| 2057 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 2058 | PDBG("%s ep %p state %s, abrupt %d\n", __func__, ep, |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 2059 | states[ep->com.state], abrupt); |
| 2060 | |
Steve Wise | 04b5d02 | 2009-03-30 08:37:56 -0700 | [diff] [blame] | 2061 | tdev = (struct t3cdev *)ep->com.tdev; |
| 2062 | rdev = (struct cxio_rdev *)tdev->ulp; |
| 2063 | if (cxio_fatal_error(rdev)) { |
| 2064 | fatal = 1; |
| 2065 | close_complete_upcall(ep); |
| 2066 | ep->com.state = DEAD; |
| 2067 | } |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 2068 | switch (ep->com.state) { |
| 2069 | case MPA_REQ_WAIT: |
| 2070 | case MPA_REQ_SENT: |
| 2071 | case MPA_REQ_RCVD: |
| 2072 | case MPA_REP_SENT: |
| 2073 | case FPDU_MODE: |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 2074 | close = 1; |
Steve Wise | 989a178 | 2008-04-29 13:46:51 -0700 | [diff] [blame] | 2075 | if (abrupt) |
| 2076 | ep->com.state = ABORTING; |
| 2077 | else { |
| 2078 | ep->com.state = CLOSING; |
| 2079 | start_ep_timer(ep); |
| 2080 | } |
Steve Wise | 6e47fe4 | 2009-09-05 20:22:38 -0700 | [diff] [blame] | 2081 | set_bit(CLOSE_SENT, &ep->com.flags); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 2082 | break; |
| 2083 | case CLOSING: |
Steve Wise | 6e47fe4 | 2009-09-05 20:22:38 -0700 | [diff] [blame] | 2084 | if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) { |
| 2085 | close = 1; |
| 2086 | if (abrupt) { |
| 2087 | stop_ep_timer(ep); |
| 2088 | ep->com.state = ABORTING; |
| 2089 | } else |
| 2090 | ep->com.state = MORIBUND; |
| 2091 | } |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 2092 | break; |
| 2093 | case MORIBUND: |
Steve Wise | 989a178 | 2008-04-29 13:46:51 -0700 | [diff] [blame] | 2094 | case ABORTING: |
| 2095 | case DEAD: |
| 2096 | PDBG("%s ignoring disconnect ep %p state %u\n", |
| 2097 | __func__, ep, ep->com.state); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 2098 | break; |
| 2099 | default: |
| 2100 | BUG(); |
| 2101 | break; |
| 2102 | } |
Steve Wise | 989a178 | 2008-04-29 13:46:51 -0700 | [diff] [blame] | 2103 | |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 2104 | spin_unlock_irqrestore(&ep->com.lock, flags); |
| 2105 | if (close) { |
| 2106 | if (abrupt) |
| 2107 | ret = send_abort(ep, NULL, gfp); |
| 2108 | else |
| 2109 | ret = send_halfclose(ep, gfp); |
Steve Wise | 04b5d02 | 2009-03-30 08:37:56 -0700 | [diff] [blame] | 2110 | if (ret) |
| 2111 | fatal = 1; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 2112 | } |
Steve Wise | 04b5d02 | 2009-03-30 08:37:56 -0700 | [diff] [blame] | 2113 | if (fatal) |
| 2114 | release_ep_resources(ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 2115 | return ret; |
| 2116 | } |
| 2117 | |
| 2118 | int iwch_ep_redirect(void *ctx, struct dst_entry *old, struct dst_entry *new, |
| 2119 | struct l2t_entry *l2t) |
| 2120 | { |
| 2121 | struct iwch_ep *ep = ctx; |
| 2122 | |
| 2123 | if (ep->dst != old) |
| 2124 | return 0; |
| 2125 | |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 2126 | PDBG("%s ep %p redirect to dst %p l2t %p\n", __func__, ep, new, |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 2127 | l2t); |
| 2128 | dst_hold(new); |
| 2129 | l2t_release(L2DATA(ep->com.tdev), ep->l2t); |
| 2130 | ep->l2t = l2t; |
| 2131 | dst_release(old); |
| 2132 | ep->dst = new; |
| 2133 | return 1; |
| 2134 | } |
| 2135 | |
| 2136 | /* |
| 2137 | * All the CM events are handled on a work queue to have a safe context. |
Roland Dreier | 617c9a7 | 2010-04-28 14:57:40 -0700 | [diff] [blame] | 2138 | * These are the real handlers that are called from the work queue. |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 2139 | */ |
Roland Dreier | 617c9a7 | 2010-04-28 14:57:40 -0700 | [diff] [blame] | 2140 | static const cxgb3_cpl_handler_func work_handlers[NUM_CPL_CMDS] = { |
| 2141 | [CPL_ACT_ESTABLISH] = act_establish, |
| 2142 | [CPL_ACT_OPEN_RPL] = act_open_rpl, |
| 2143 | [CPL_RX_DATA] = rx_data, |
| 2144 | [CPL_TX_DMA_ACK] = tx_ack, |
| 2145 | [CPL_ABORT_RPL_RSS] = abort_rpl, |
| 2146 | [CPL_ABORT_RPL] = abort_rpl, |
| 2147 | [CPL_PASS_OPEN_RPL] = pass_open_rpl, |
| 2148 | [CPL_CLOSE_LISTSRV_RPL] = close_listsrv_rpl, |
| 2149 | [CPL_PASS_ACCEPT_REQ] = pass_accept_req, |
| 2150 | [CPL_PASS_ESTABLISH] = pass_establish, |
| 2151 | [CPL_PEER_CLOSE] = peer_close, |
| 2152 | [CPL_ABORT_REQ_RSS] = peer_abort, |
| 2153 | [CPL_CLOSE_CON_RPL] = close_con_rpl, |
| 2154 | [CPL_RDMA_TERMINATE] = terminate, |
| 2155 | [CPL_RDMA_EC_STATUS] = ec_status, |
| 2156 | }; |
| 2157 | |
| 2158 | static void process_work(struct work_struct *work) |
| 2159 | { |
| 2160 | struct sk_buff *skb = NULL; |
| 2161 | void *ep; |
| 2162 | struct t3cdev *tdev; |
| 2163 | int ret; |
| 2164 | |
| 2165 | while ((skb = skb_dequeue(&rxq))) { |
| 2166 | ep = *((void **) (skb->cb)); |
| 2167 | tdev = *((struct t3cdev **) (skb->cb + sizeof(void *))); |
| 2168 | ret = work_handlers[G_OPCODE(ntohl((__force __be32)skb->csum))](tdev, skb, ep); |
| 2169 | if (ret & CPL_RET_BUF_DONE) |
| 2170 | kfree_skb(skb); |
| 2171 | |
| 2172 | /* |
| 2173 | * ep was referenced in sched(), and is freed here. |
| 2174 | */ |
| 2175 | put_ep((struct iwch_ep_common *)ep); |
| 2176 | } |
| 2177 | } |
| 2178 | |
| 2179 | static DECLARE_WORK(skb_work, process_work); |
| 2180 | |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 2181 | static int sched(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) |
| 2182 | { |
| 2183 | struct iwch_ep_common *epc = ctx; |
| 2184 | |
| 2185 | get_ep(epc); |
| 2186 | |
| 2187 | /* |
| 2188 | * Save ctx and tdev in the skb->cb area. |
| 2189 | */ |
| 2190 | *((void **) skb->cb) = ctx; |
| 2191 | *((struct t3cdev **) (skb->cb + sizeof(void *))) = tdev; |
| 2192 | |
| 2193 | /* |
| 2194 | * Queue the skb and schedule the worker thread. |
| 2195 | */ |
| 2196 | skb_queue_tail(&rxq, skb); |
| 2197 | queue_work(workq, &skb_work); |
| 2198 | return 0; |
| 2199 | } |
| 2200 | |
Steve Wise | 1ca1977 | 2007-04-12 07:56:34 -0500 | [diff] [blame] | 2201 | static int set_tcb_rpl(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) |
| 2202 | { |
| 2203 | struct cpl_set_tcb_rpl *rpl = cplhdr(skb); |
| 2204 | |
| 2205 | if (rpl->status != CPL_ERR_NONE) { |
| 2206 | printk(KERN_ERR MOD "Unexpected SET_TCB_RPL status %u " |
| 2207 | "for tid %u\n", rpl->status, GET_TID(rpl)); |
| 2208 | } |
| 2209 | return CPL_RET_BUF_DONE; |
| 2210 | } |
| 2211 | |
Roland Dreier | 617c9a7 | 2010-04-28 14:57:40 -0700 | [diff] [blame] | 2212 | /* |
| 2213 | * All upcalls from the T3 Core go to sched() to schedule the |
| 2214 | * processing on a work queue. |
| 2215 | */ |
| 2216 | cxgb3_cpl_handler_func t3c_handlers[NUM_CPL_CMDS] = { |
| 2217 | [CPL_ACT_ESTABLISH] = sched, |
| 2218 | [CPL_ACT_OPEN_RPL] = sched, |
| 2219 | [CPL_RX_DATA] = sched, |
| 2220 | [CPL_TX_DMA_ACK] = sched, |
| 2221 | [CPL_ABORT_RPL_RSS] = sched, |
| 2222 | [CPL_ABORT_RPL] = sched, |
| 2223 | [CPL_PASS_OPEN_RPL] = sched, |
| 2224 | [CPL_CLOSE_LISTSRV_RPL] = sched, |
| 2225 | [CPL_PASS_ACCEPT_REQ] = sched, |
| 2226 | [CPL_PASS_ESTABLISH] = sched, |
| 2227 | [CPL_PEER_CLOSE] = sched, |
| 2228 | [CPL_CLOSE_CON_RPL] = sched, |
| 2229 | [CPL_ABORT_REQ_RSS] = sched, |
| 2230 | [CPL_RDMA_TERMINATE] = sched, |
| 2231 | [CPL_RDMA_EC_STATUS] = sched, |
| 2232 | [CPL_SET_TCB_RPL] = set_tcb_rpl, |
| 2233 | }; |
| 2234 | |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 2235 | int __init iwch_cm_init(void) |
| 2236 | { |
| 2237 | skb_queue_head_init(&rxq); |
| 2238 | |
| 2239 | workq = create_singlethread_workqueue("iw_cxgb3"); |
| 2240 | if (!workq) |
| 2241 | return -ENOMEM; |
| 2242 | |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 2243 | return 0; |
| 2244 | } |
| 2245 | |
| 2246 | void __exit iwch_cm_term(void) |
| 2247 | { |
| 2248 | flush_workqueue(workq); |
| 2249 | destroy_workqueue(workq); |
| 2250 | } |