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b038ced7 SW |
1 | /* |
2 | * Copyright (c) 2006 Chelsio, Inc. All rights reserved. | |
b038ced7 SW |
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> | |
5a0e3ad6 | 34 | #include <linux/slab.h> |
b038ced7 SW |
35 | #include <linux/workqueue.h> |
36 | #include <linux/skbuff.h> | |
37 | #include <linux/timer.h> | |
38 | #include <linux/notifier.h> | |
8704e9a8 | 39 | #include <linux/inetdevice.h> |
b038ced7 SW |
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 | ||
f8b0dfd1 SW |
67 | int peer2peer = 0; |
68 | module_param(peer2peer, int, 0644); | |
69 | MODULE_PARM_DESC(peer2peer, "Support peer2peer ULPs (default=0)"); | |
70 | ||
77a8d574 | 71 | static int ep_timeout_secs = 60; |
e54664c0 | 72 | module_param(ep_timeout_secs, int, 0644); |
b038ced7 | 73 | MODULE_PARM_DESC(ep_timeout_secs, "CM Endpoint operation timeout " |
77a8d574 | 74 | "in seconds (default=60)"); |
b038ced7 SW |
75 | |
76 | static int mpa_rev = 1; | |
e54664c0 | 77 | module_param(mpa_rev, int, 0644); |
b038ced7 SW |
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; | |
e54664c0 | 82 | module_param(markers_enabled, int, 0644); |
b038ced7 SW |
83 | MODULE_PARM_DESC(markers_enabled, "Enable MPA MARKERS (default(0)=disabled)"); |
84 | ||
85 | static int crc_enabled = 1; | |
e54664c0 | 86 | module_param(crc_enabled, int, 0644); |
b038ced7 SW |
87 | MODULE_PARM_DESC(crc_enabled, "Enable MPA CRC (default(1)=enabled)"); |
88 | ||
89 | static int rcv_win = 256 * 1024; | |
e54664c0 | 90 | module_param(rcv_win, int, 0644); |
b038ced7 SW |
91 | MODULE_PARM_DESC(rcv_win, "TCP receive window in bytes (default=256)"); |
92 | ||
93 | static int snd_win = 32 * 1024; | |
e54664c0 | 94 | module_param(snd_win, int, 0644); |
b038ced7 SW |
95 | MODULE_PARM_DESC(snd_win, "TCP send window in bytes (default=32KB)"); |
96 | ||
97 | static unsigned int nocong = 0; | |
e54664c0 | 98 | module_param(nocong, uint, 0644); |
b038ced7 SW |
99 | MODULE_PARM_DESC(nocong, "Turn off congestion control (default=0)"); |
100 | ||
101 | static unsigned int cong_flavor = 1; | |
e54664c0 | 102 | module_param(cong_flavor, uint, 0644); |
b038ced7 SW |
103 | MODULE_PARM_DESC(cong_flavor, "TCP Congestion control flavor (default=1)"); |
104 | ||
105 | static void process_work(struct work_struct *work); | |
106 | static struct workqueue_struct *workq; | |
107 | static DECLARE_WORK(skb_work, process_work); | |
108 | ||
109 | static struct sk_buff_head rxq; | |
110 | static cxgb3_cpl_handler_func work_handlers[NUM_CPL_CMDS]; | |
111 | ||
112 | static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp); | |
113 | static void ep_timeout(unsigned long arg); | |
114 | static void connect_reply_upcall(struct iwch_ep *ep, int status); | |
115 | ||
116 | static void start_ep_timer(struct iwch_ep *ep) | |
117 | { | |
33718363 | 118 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 | 119 | if (timer_pending(&ep->timer)) { |
33718363 | 120 | PDBG("%s stopped / restarted timer ep %p\n", __func__, ep); |
b038ced7 SW |
121 | del_timer_sync(&ep->timer); |
122 | } else | |
123 | get_ep(&ep->com); | |
124 | ep->timer.expires = jiffies + ep_timeout_secs * HZ; | |
125 | ep->timer.data = (unsigned long)ep; | |
126 | ep->timer.function = ep_timeout; | |
127 | add_timer(&ep->timer); | |
128 | } | |
129 | ||
130 | static void stop_ep_timer(struct iwch_ep *ep) | |
131 | { | |
33718363 | 132 | PDBG("%s ep %p\n", __func__, ep); |
989a1780 SW |
133 | if (!timer_pending(&ep->timer)) { |
134 | printk(KERN_ERR "%s timer stopped when its not running! ep %p state %u\n", | |
135 | __func__, ep, ep->com.state); | |
136 | WARN_ON(1); | |
137 | return; | |
138 | } | |
b038ced7 SW |
139 | del_timer_sync(&ep->timer); |
140 | put_ep(&ep->com); | |
141 | } | |
142 | ||
04b5d028 SW |
143 | int iwch_l2t_send(struct t3cdev *tdev, struct sk_buff *skb, struct l2t_entry *l2e) |
144 | { | |
145 | int error = 0; | |
146 | struct cxio_rdev *rdev; | |
147 | ||
148 | rdev = (struct cxio_rdev *)tdev->ulp; | |
149 | if (cxio_fatal_error(rdev)) { | |
150 | kfree_skb(skb); | |
151 | return -EIO; | |
152 | } | |
153 | error = l2t_send(tdev, skb, l2e); | |
154 | if (error) | |
155 | kfree_skb(skb); | |
156 | return error; | |
157 | } | |
158 | ||
159 | int iwch_cxgb3_ofld_send(struct t3cdev *tdev, struct sk_buff *skb) | |
160 | { | |
161 | int error = 0; | |
162 | struct cxio_rdev *rdev; | |
163 | ||
164 | rdev = (struct cxio_rdev *)tdev->ulp; | |
165 | if (cxio_fatal_error(rdev)) { | |
166 | kfree_skb(skb); | |
167 | return -EIO; | |
168 | } | |
169 | error = cxgb3_ofld_send(tdev, skb); | |
170 | if (error) | |
171 | kfree_skb(skb); | |
172 | return error; | |
173 | } | |
174 | ||
b038ced7 SW |
175 | static void release_tid(struct t3cdev *tdev, u32 hwtid, struct sk_buff *skb) |
176 | { | |
177 | struct cpl_tid_release *req; | |
178 | ||
179 | skb = get_skb(skb, sizeof *req, GFP_KERNEL); | |
180 | if (!skb) | |
181 | return; | |
182 | req = (struct cpl_tid_release *) skb_put(skb, sizeof(*req)); | |
183 | req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); | |
184 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_TID_RELEASE, hwtid)); | |
185 | skb->priority = CPL_PRIORITY_SETUP; | |
04b5d028 | 186 | iwch_cxgb3_ofld_send(tdev, skb); |
b038ced7 SW |
187 | return; |
188 | } | |
189 | ||
190 | int iwch_quiesce_tid(struct iwch_ep *ep) | |
191 | { | |
192 | struct cpl_set_tcb_field *req; | |
193 | struct sk_buff *skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); | |
194 | ||
195 | if (!skb) | |
196 | return -ENOMEM; | |
197 | req = (struct cpl_set_tcb_field *) skb_put(skb, sizeof(*req)); | |
198 | req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); | |
199 | req->wr.wr_lo = htonl(V_WR_TID(ep->hwtid)); | |
200 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, ep->hwtid)); | |
201 | req->reply = 0; | |
202 | req->cpu_idx = 0; | |
203 | req->word = htons(W_TCB_RX_QUIESCE); | |
204 | req->mask = cpu_to_be64(1ULL << S_TCB_RX_QUIESCE); | |
205 | req->val = cpu_to_be64(1 << S_TCB_RX_QUIESCE); | |
206 | ||
207 | skb->priority = CPL_PRIORITY_DATA; | |
04b5d028 | 208 | return iwch_cxgb3_ofld_send(ep->com.tdev, skb); |
b038ced7 SW |
209 | } |
210 | ||
211 | int iwch_resume_tid(struct iwch_ep *ep) | |
212 | { | |
213 | struct cpl_set_tcb_field *req; | |
214 | struct sk_buff *skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); | |
215 | ||
216 | if (!skb) | |
217 | return -ENOMEM; | |
218 | req = (struct cpl_set_tcb_field *) skb_put(skb, sizeof(*req)); | |
219 | req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); | |
220 | req->wr.wr_lo = htonl(V_WR_TID(ep->hwtid)); | |
221 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, ep->hwtid)); | |
222 | req->reply = 0; | |
223 | req->cpu_idx = 0; | |
224 | req->word = htons(W_TCB_RX_QUIESCE); | |
225 | req->mask = cpu_to_be64(1ULL << S_TCB_RX_QUIESCE); | |
226 | req->val = 0; | |
227 | ||
228 | skb->priority = CPL_PRIORITY_DATA; | |
04b5d028 | 229 | return iwch_cxgb3_ofld_send(ep->com.tdev, skb); |
b038ced7 SW |
230 | } |
231 | ||
232 | static void set_emss(struct iwch_ep *ep, u16 opt) | |
233 | { | |
33718363 | 234 | PDBG("%s ep %p opt %u\n", __func__, ep, opt); |
b038ced7 SW |
235 | ep->emss = T3C_DATA(ep->com.tdev)->mtus[G_TCPOPT_MSS(opt)] - 40; |
236 | if (G_TCPOPT_TSTAMP(opt)) | |
237 | ep->emss -= 12; | |
238 | if (ep->emss < 128) | |
239 | ep->emss = 128; | |
240 | PDBG("emss=%d\n", ep->emss); | |
241 | } | |
242 | ||
243 | static enum iwch_ep_state state_read(struct iwch_ep_common *epc) | |
244 | { | |
245 | unsigned long flags; | |
246 | enum iwch_ep_state state; | |
247 | ||
248 | spin_lock_irqsave(&epc->lock, flags); | |
249 | state = epc->state; | |
250 | spin_unlock_irqrestore(&epc->lock, flags); | |
251 | return state; | |
252 | } | |
253 | ||
2b540355 | 254 | static void __state_set(struct iwch_ep_common *epc, enum iwch_ep_state new) |
b038ced7 SW |
255 | { |
256 | epc->state = new; | |
257 | } | |
258 | ||
259 | static void state_set(struct iwch_ep_common *epc, enum iwch_ep_state new) | |
260 | { | |
261 | unsigned long flags; | |
262 | ||
263 | spin_lock_irqsave(&epc->lock, flags); | |
33718363 | 264 | PDBG("%s - %s -> %s\n", __func__, states[epc->state], states[new]); |
b038ced7 SW |
265 | __state_set(epc, new); |
266 | spin_unlock_irqrestore(&epc->lock, flags); | |
267 | return; | |
268 | } | |
269 | ||
270 | static void *alloc_ep(int size, gfp_t gfp) | |
271 | { | |
272 | struct iwch_ep_common *epc; | |
273 | ||
dd00cc48 | 274 | epc = kzalloc(size, gfp); |
b038ced7 | 275 | if (epc) { |
b038ced7 SW |
276 | kref_init(&epc->kref); |
277 | spin_lock_init(&epc->lock); | |
278 | init_waitqueue_head(&epc->waitq); | |
279 | } | |
33718363 | 280 | PDBG("%s alloc ep %p\n", __func__, epc); |
b038ced7 SW |
281 | return epc; |
282 | } | |
283 | ||
284 | void __free_ep(struct kref *kref) | |
285 | { | |
874d8df5 SW |
286 | struct iwch_ep *ep; |
287 | ep = container_of(container_of(kref, struct iwch_ep_common, kref), | |
288 | struct iwch_ep, com); | |
289 | PDBG("%s ep %p state %s\n", __func__, ep, states[state_read(&ep->com)]); | |
6e47fe43 | 290 | if (test_bit(RELEASE_RESOURCES, &ep->com.flags)) { |
874d8df5 SW |
291 | cxgb3_remove_tid(ep->com.tdev, (void *)ep, ep->hwtid); |
292 | dst_release(ep->dst); | |
293 | l2t_release(L2DATA(ep->com.tdev), ep->l2t); | |
294 | } | |
295 | kfree(ep); | |
b038ced7 SW |
296 | } |
297 | ||
298 | static void release_ep_resources(struct iwch_ep *ep) | |
299 | { | |
33718363 | 300 | PDBG("%s ep %p tid %d\n", __func__, ep, ep->hwtid); |
6e47fe43 | 301 | set_bit(RELEASE_RESOURCES, &ep->com.flags); |
b038ced7 SW |
302 | put_ep(&ep->com); |
303 | } | |
304 | ||
305 | static void process_work(struct work_struct *work) | |
306 | { | |
307 | struct sk_buff *skb = NULL; | |
308 | void *ep; | |
309 | struct t3cdev *tdev; | |
310 | int ret; | |
311 | ||
312 | while ((skb = skb_dequeue(&rxq))) { | |
313 | ep = *((void **) (skb->cb)); | |
314 | tdev = *((struct t3cdev **) (skb->cb + sizeof(void *))); | |
315 | ret = work_handlers[G_OPCODE(ntohl((__force __be32)skb->csum))](tdev, skb, ep); | |
316 | if (ret & CPL_RET_BUF_DONE) | |
317 | kfree_skb(skb); | |
318 | ||
319 | /* | |
320 | * ep was referenced in sched(), and is freed here. | |
321 | */ | |
322 | put_ep((struct iwch_ep_common *)ep); | |
323 | } | |
324 | } | |
325 | ||
326 | static int status2errno(int status) | |
327 | { | |
328 | switch (status) { | |
329 | case CPL_ERR_NONE: | |
330 | return 0; | |
331 | case CPL_ERR_CONN_RESET: | |
332 | return -ECONNRESET; | |
333 | case CPL_ERR_ARP_MISS: | |
334 | return -EHOSTUNREACH; | |
335 | case CPL_ERR_CONN_TIMEDOUT: | |
336 | return -ETIMEDOUT; | |
337 | case CPL_ERR_TCAM_FULL: | |
338 | return -ENOMEM; | |
339 | case CPL_ERR_CONN_EXIST: | |
340 | return -EADDRINUSE; | |
341 | default: | |
342 | return -EIO; | |
343 | } | |
344 | } | |
345 | ||
346 | /* | |
347 | * Try and reuse skbs already allocated... | |
348 | */ | |
349 | static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp) | |
350 | { | |
1f6a849b | 351 | if (skb && !skb_is_nonlinear(skb) && !skb_cloned(skb)) { |
b038ced7 SW |
352 | skb_trim(skb, 0); |
353 | skb_get(skb); | |
354 | } else { | |
355 | skb = alloc_skb(len, gfp); | |
356 | } | |
357 | return skb; | |
358 | } | |
359 | ||
360 | static struct rtable *find_route(struct t3cdev *dev, __be32 local_ip, | |
361 | __be32 peer_ip, __be16 local_port, | |
362 | __be16 peer_port, u8 tos) | |
363 | { | |
364 | struct rtable *rt; | |
365 | struct flowi fl = { | |
366 | .oif = 0, | |
367 | .nl_u = { | |
368 | .ip4_u = { | |
369 | .daddr = peer_ip, | |
370 | .saddr = local_ip, | |
371 | .tos = tos} | |
372 | }, | |
373 | .proto = IPPROTO_TCP, | |
374 | .uli_u = { | |
375 | .ports = { | |
376 | .sport = local_port, | |
377 | .dport = peer_port} | |
378 | } | |
379 | }; | |
380 | ||
f1b050bf | 381 | if (ip_route_output_flow(&init_net, &rt, &fl, NULL, 0)) |
b038ced7 SW |
382 | return NULL; |
383 | return rt; | |
384 | } | |
385 | ||
386 | static unsigned int find_best_mtu(const struct t3c_data *d, unsigned short mtu) | |
387 | { | |
388 | int i = 0; | |
389 | ||
390 | while (i < d->nmtus - 1 && d->mtus[i + 1] <= mtu) | |
391 | ++i; | |
392 | return i; | |
393 | } | |
394 | ||
395 | static void arp_failure_discard(struct t3cdev *dev, struct sk_buff *skb) | |
396 | { | |
33718363 | 397 | PDBG("%s t3cdev %p\n", __func__, dev); |
b038ced7 SW |
398 | kfree_skb(skb); |
399 | } | |
400 | ||
401 | /* | |
402 | * Handle an ARP failure for an active open. | |
403 | */ | |
404 | static void act_open_req_arp_failure(struct t3cdev *dev, struct sk_buff *skb) | |
405 | { | |
406 | printk(KERN_ERR MOD "ARP failure duing connect\n"); | |
407 | kfree_skb(skb); | |
408 | } | |
409 | ||
410 | /* | |
411 | * Handle an ARP failure for a CPL_ABORT_REQ. Change it into a no RST variant | |
412 | * and send it along. | |
413 | */ | |
414 | static void abort_arp_failure(struct t3cdev *dev, struct sk_buff *skb) | |
415 | { | |
416 | struct cpl_abort_req *req = cplhdr(skb); | |
417 | ||
33718363 | 418 | PDBG("%s t3cdev %p\n", __func__, dev); |
b038ced7 | 419 | req->cmd = CPL_ABORT_NO_RST; |
04b5d028 | 420 | iwch_cxgb3_ofld_send(dev, skb); |
b038ced7 SW |
421 | } |
422 | ||
423 | static int send_halfclose(struct iwch_ep *ep, gfp_t gfp) | |
424 | { | |
425 | struct cpl_close_con_req *req; | |
426 | struct sk_buff *skb; | |
427 | ||
33718363 | 428 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
429 | skb = get_skb(NULL, sizeof(*req), gfp); |
430 | if (!skb) { | |
33718363 | 431 | printk(KERN_ERR MOD "%s - failed to alloc skb\n", __func__); |
b038ced7 SW |
432 | return -ENOMEM; |
433 | } | |
434 | skb->priority = CPL_PRIORITY_DATA; | |
435 | set_arp_failure_handler(skb, arp_failure_discard); | |
436 | req = (struct cpl_close_con_req *) skb_put(skb, sizeof(*req)); | |
437 | req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_CLOSE_CON)); | |
438 | req->wr.wr_lo = htonl(V_WR_TID(ep->hwtid)); | |
439 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_CLOSE_CON_REQ, ep->hwtid)); | |
04b5d028 | 440 | return iwch_l2t_send(ep->com.tdev, skb, ep->l2t); |
b038ced7 SW |
441 | } |
442 | ||
443 | static int send_abort(struct iwch_ep *ep, struct sk_buff *skb, gfp_t gfp) | |
444 | { | |
445 | struct cpl_abort_req *req; | |
446 | ||
33718363 | 447 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
448 | skb = get_skb(skb, sizeof(*req), gfp); |
449 | if (!skb) { | |
450 | printk(KERN_ERR MOD "%s - failed to alloc skb.\n", | |
33718363 | 451 | __func__); |
b038ced7 SW |
452 | return -ENOMEM; |
453 | } | |
454 | skb->priority = CPL_PRIORITY_DATA; | |
455 | set_arp_failure_handler(skb, abort_arp_failure); | |
456 | req = (struct cpl_abort_req *) skb_put(skb, sizeof(*req)); | |
457 | req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_HOST_ABORT_CON_REQ)); | |
458 | req->wr.wr_lo = htonl(V_WR_TID(ep->hwtid)); | |
459 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_ABORT_REQ, ep->hwtid)); | |
460 | req->cmd = CPL_ABORT_SEND_RST; | |
04b5d028 | 461 | return iwch_l2t_send(ep->com.tdev, skb, ep->l2t); |
b038ced7 SW |
462 | } |
463 | ||
464 | static int send_connect(struct iwch_ep *ep) | |
465 | { | |
466 | struct cpl_act_open_req *req; | |
467 | struct sk_buff *skb; | |
468 | u32 opt0h, opt0l, opt2; | |
469 | unsigned int mtu_idx; | |
470 | int wscale; | |
471 | ||
33718363 | 472 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
473 | |
474 | skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); | |
475 | if (!skb) { | |
476 | printk(KERN_ERR MOD "%s - failed to alloc skb.\n", | |
33718363 | 477 | __func__); |
b038ced7 SW |
478 | return -ENOMEM; |
479 | } | |
480 | mtu_idx = find_best_mtu(T3C_DATA(ep->com.tdev), dst_mtu(ep->dst)); | |
481 | wscale = compute_wscale(rcv_win); | |
482 | opt0h = V_NAGLE(0) | | |
483 | V_NO_CONG(nocong) | | |
484 | V_KEEP_ALIVE(1) | | |
485 | F_TCAM_BYPASS | | |
486 | V_WND_SCALE(wscale) | | |
487 | V_MSS_IDX(mtu_idx) | | |
488 | V_L2T_IDX(ep->l2t->idx) | V_TX_CHANNEL(ep->l2t->smt_idx); | |
489 | opt0l = V_TOS((ep->tos >> 2) & M_TOS) | V_RCV_BUFSIZ(rcv_win>>10); | |
490 | opt2 = V_FLAVORS_VALID(1) | V_CONG_CONTROL_FLAVOR(cong_flavor); | |
491 | skb->priority = CPL_PRIORITY_SETUP; | |
492 | set_arp_failure_handler(skb, act_open_req_arp_failure); | |
493 | ||
494 | req = (struct cpl_act_open_req *) skb_put(skb, sizeof(*req)); | |
495 | req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); | |
496 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_ACT_OPEN_REQ, ep->atid)); | |
497 | req->local_port = ep->com.local_addr.sin_port; | |
498 | req->peer_port = ep->com.remote_addr.sin_port; | |
499 | req->local_ip = ep->com.local_addr.sin_addr.s_addr; | |
500 | req->peer_ip = ep->com.remote_addr.sin_addr.s_addr; | |
501 | req->opt0h = htonl(opt0h); | |
502 | req->opt0l = htonl(opt0l); | |
503 | req->params = 0; | |
504 | req->opt2 = htonl(opt2); | |
04b5d028 | 505 | return iwch_l2t_send(ep->com.tdev, skb, ep->l2t); |
b038ced7 SW |
506 | } |
507 | ||
508 | static void send_mpa_req(struct iwch_ep *ep, struct sk_buff *skb) | |
509 | { | |
510 | int mpalen; | |
511 | struct tx_data_wr *req; | |
512 | struct mpa_message *mpa; | |
513 | int len; | |
514 | ||
33718363 | 515 | PDBG("%s ep %p pd_len %d\n", __func__, ep, ep->plen); |
b038ced7 SW |
516 | |
517 | BUG_ON(skb_cloned(skb)); | |
518 | ||
519 | mpalen = sizeof(*mpa) + ep->plen; | |
4305b541 | 520 | if (skb->data + mpalen + sizeof(*req) > skb_end_pointer(skb)) { |
b038ced7 SW |
521 | kfree_skb(skb); |
522 | skb=alloc_skb(mpalen + sizeof(*req), GFP_KERNEL); | |
523 | if (!skb) { | |
524 | connect_reply_upcall(ep, -ENOMEM); | |
525 | return; | |
526 | } | |
527 | } | |
528 | skb_trim(skb, 0); | |
529 | skb_reserve(skb, sizeof(*req)); | |
530 | skb_put(skb, mpalen); | |
531 | skb->priority = CPL_PRIORITY_DATA; | |
532 | mpa = (struct mpa_message *) skb->data; | |
533 | memset(mpa, 0, sizeof(*mpa)); | |
534 | memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key)); | |
535 | mpa->flags = (crc_enabled ? MPA_CRC : 0) | | |
536 | (markers_enabled ? MPA_MARKERS : 0); | |
537 | mpa->private_data_size = htons(ep->plen); | |
538 | mpa->revision = mpa_rev; | |
539 | ||
540 | if (ep->plen) | |
541 | memcpy(mpa->private_data, ep->mpa_pkt + sizeof(*mpa), ep->plen); | |
542 | ||
543 | /* | |
544 | * Reference the mpa skb. This ensures the data area | |
545 | * will remain in memory until the hw acks the tx. | |
546 | * Function tx_ack() will deref it. | |
547 | */ | |
548 | skb_get(skb); | |
549 | set_arp_failure_handler(skb, arp_failure_discard); | |
badff6d0 | 550 | skb_reset_transport_header(skb); |
b038ced7 SW |
551 | len = skb->len; |
552 | req = (struct tx_data_wr *) skb_push(skb, sizeof(*req)); | |
f8b0dfd1 | 553 | req->wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_TX_DATA)|F_WR_COMPL); |
b038ced7 SW |
554 | req->wr_lo = htonl(V_WR_TID(ep->hwtid)); |
555 | req->len = htonl(len); | |
556 | req->param = htonl(V_TX_PORT(ep->l2t->smt_idx) | | |
557 | V_TX_SNDBUF(snd_win>>15)); | |
de3d3530 | 558 | req->flags = htonl(F_TX_INIT); |
b038ced7 SW |
559 | req->sndseq = htonl(ep->snd_seq); |
560 | BUG_ON(ep->mpa_skb); | |
561 | ep->mpa_skb = skb; | |
04b5d028 | 562 | iwch_l2t_send(ep->com.tdev, skb, ep->l2t); |
b038ced7 SW |
563 | start_ep_timer(ep); |
564 | state_set(&ep->com, MPA_REQ_SENT); | |
565 | return; | |
566 | } | |
567 | ||
568 | static int send_mpa_reject(struct iwch_ep *ep, const void *pdata, u8 plen) | |
569 | { | |
570 | int mpalen; | |
571 | struct tx_data_wr *req; | |
572 | struct mpa_message *mpa; | |
573 | struct sk_buff *skb; | |
574 | ||
33718363 | 575 | PDBG("%s ep %p plen %d\n", __func__, ep, plen); |
b038ced7 SW |
576 | |
577 | mpalen = sizeof(*mpa) + plen; | |
578 | ||
579 | skb = get_skb(NULL, mpalen + sizeof(*req), GFP_KERNEL); | |
580 | if (!skb) { | |
33718363 | 581 | printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__); |
b038ced7 SW |
582 | return -ENOMEM; |
583 | } | |
584 | skb_reserve(skb, sizeof(*req)); | |
585 | mpa = (struct mpa_message *) skb_put(skb, mpalen); | |
586 | memset(mpa, 0, sizeof(*mpa)); | |
587 | memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); | |
588 | mpa->flags = MPA_REJECT; | |
589 | mpa->revision = mpa_rev; | |
590 | mpa->private_data_size = htons(plen); | |
591 | if (plen) | |
592 | memcpy(mpa->private_data, pdata, plen); | |
593 | ||
594 | /* | |
595 | * Reference the mpa skb again. This ensures the data area | |
596 | * will remain in memory until the hw acks the tx. | |
597 | * Function tx_ack() will deref it. | |
598 | */ | |
599 | skb_get(skb); | |
600 | skb->priority = CPL_PRIORITY_DATA; | |
601 | set_arp_failure_handler(skb, arp_failure_discard); | |
badff6d0 | 602 | skb_reset_transport_header(skb); |
b038ced7 | 603 | req = (struct tx_data_wr *) skb_push(skb, sizeof(*req)); |
f8b0dfd1 | 604 | req->wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_TX_DATA)|F_WR_COMPL); |
b038ced7 SW |
605 | req->wr_lo = htonl(V_WR_TID(ep->hwtid)); |
606 | req->len = htonl(mpalen); | |
607 | req->param = htonl(V_TX_PORT(ep->l2t->smt_idx) | | |
608 | V_TX_SNDBUF(snd_win>>15)); | |
de3d3530 | 609 | req->flags = htonl(F_TX_INIT); |
b038ced7 SW |
610 | req->sndseq = htonl(ep->snd_seq); |
611 | BUG_ON(ep->mpa_skb); | |
612 | ep->mpa_skb = skb; | |
04b5d028 | 613 | return iwch_l2t_send(ep->com.tdev, skb, ep->l2t); |
b038ced7 SW |
614 | } |
615 | ||
616 | static int send_mpa_reply(struct iwch_ep *ep, const void *pdata, u8 plen) | |
617 | { | |
618 | int mpalen; | |
619 | struct tx_data_wr *req; | |
620 | struct mpa_message *mpa; | |
621 | int len; | |
622 | struct sk_buff *skb; | |
623 | ||
33718363 | 624 | PDBG("%s ep %p plen %d\n", __func__, ep, plen); |
b038ced7 SW |
625 | |
626 | mpalen = sizeof(*mpa) + plen; | |
627 | ||
628 | skb = get_skb(NULL, mpalen + sizeof(*req), GFP_KERNEL); | |
629 | if (!skb) { | |
33718363 | 630 | printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__); |
b038ced7 SW |
631 | return -ENOMEM; |
632 | } | |
633 | skb->priority = CPL_PRIORITY_DATA; | |
634 | skb_reserve(skb, sizeof(*req)); | |
635 | mpa = (struct mpa_message *) skb_put(skb, mpalen); | |
636 | memset(mpa, 0, sizeof(*mpa)); | |
637 | memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); | |
638 | mpa->flags = (ep->mpa_attr.crc_enabled ? MPA_CRC : 0) | | |
639 | (markers_enabled ? MPA_MARKERS : 0); | |
640 | mpa->revision = mpa_rev; | |
641 | mpa->private_data_size = htons(plen); | |
642 | if (plen) | |
643 | memcpy(mpa->private_data, pdata, plen); | |
644 | ||
645 | /* | |
646 | * Reference the mpa skb. This ensures the data area | |
647 | * will remain in memory until the hw acks the tx. | |
648 | * Function tx_ack() will deref it. | |
649 | */ | |
650 | skb_get(skb); | |
651 | set_arp_failure_handler(skb, arp_failure_discard); | |
badff6d0 | 652 | skb_reset_transport_header(skb); |
b038ced7 SW |
653 | len = skb->len; |
654 | req = (struct tx_data_wr *) skb_push(skb, sizeof(*req)); | |
f8b0dfd1 | 655 | req->wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_TX_DATA)|F_WR_COMPL); |
b038ced7 SW |
656 | req->wr_lo = htonl(V_WR_TID(ep->hwtid)); |
657 | req->len = htonl(len); | |
658 | req->param = htonl(V_TX_PORT(ep->l2t->smt_idx) | | |
659 | V_TX_SNDBUF(snd_win>>15)); | |
de3d3530 | 660 | req->flags = htonl(F_TX_INIT); |
b038ced7 SW |
661 | req->sndseq = htonl(ep->snd_seq); |
662 | ep->mpa_skb = skb; | |
663 | state_set(&ep->com, MPA_REP_SENT); | |
04b5d028 | 664 | return iwch_l2t_send(ep->com.tdev, skb, ep->l2t); |
b038ced7 SW |
665 | } |
666 | ||
667 | static int act_establish(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) | |
668 | { | |
669 | struct iwch_ep *ep = ctx; | |
670 | struct cpl_act_establish *req = cplhdr(skb); | |
671 | unsigned int tid = GET_TID(req); | |
672 | ||
33718363 | 673 | PDBG("%s ep %p tid %d\n", __func__, ep, tid); |
b038ced7 SW |
674 | |
675 | dst_confirm(ep->dst); | |
676 | ||
677 | /* setup the hwtid for this connection */ | |
678 | ep->hwtid = tid; | |
679 | cxgb3_insert_tid(ep->com.tdev, &t3c_client, ep, tid); | |
680 | ||
681 | ep->snd_seq = ntohl(req->snd_isn); | |
de3d3530 | 682 | ep->rcv_seq = ntohl(req->rcv_isn); |
b038ced7 SW |
683 | |
684 | set_emss(ep, ntohs(req->tcp_opt)); | |
685 | ||
686 | /* dealloc the atid */ | |
687 | cxgb3_free_atid(ep->com.tdev, ep->atid); | |
688 | ||
689 | /* start MPA negotiation */ | |
690 | send_mpa_req(ep, skb); | |
691 | ||
692 | return 0; | |
693 | } | |
694 | ||
695 | static void abort_connection(struct iwch_ep *ep, struct sk_buff *skb, gfp_t gfp) | |
696 | { | |
697 | PDBG("%s ep %p\n", __FILE__, ep); | |
698 | state_set(&ep->com, ABORTING); | |
699 | send_abort(ep, skb, gfp); | |
700 | } | |
701 | ||
702 | static void close_complete_upcall(struct iwch_ep *ep) | |
703 | { | |
704 | struct iw_cm_event event; | |
705 | ||
33718363 | 706 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
707 | memset(&event, 0, sizeof(event)); |
708 | event.event = IW_CM_EVENT_CLOSE; | |
709 | if (ep->com.cm_id) { | |
710 | PDBG("close complete delivered ep %p cm_id %p tid %d\n", | |
711 | ep, ep->com.cm_id, ep->hwtid); | |
712 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); | |
713 | ep->com.cm_id->rem_ref(ep->com.cm_id); | |
714 | ep->com.cm_id = NULL; | |
715 | ep->com.qp = NULL; | |
716 | } | |
717 | } | |
718 | ||
719 | static void peer_close_upcall(struct iwch_ep *ep) | |
720 | { | |
721 | struct iw_cm_event event; | |
722 | ||
33718363 | 723 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
724 | memset(&event, 0, sizeof(event)); |
725 | event.event = IW_CM_EVENT_DISCONNECT; | |
726 | if (ep->com.cm_id) { | |
727 | PDBG("peer close delivered ep %p cm_id %p tid %d\n", | |
728 | ep, ep->com.cm_id, ep->hwtid); | |
729 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); | |
730 | } | |
731 | } | |
732 | ||
733 | static void peer_abort_upcall(struct iwch_ep *ep) | |
734 | { | |
735 | struct iw_cm_event event; | |
736 | ||
33718363 | 737 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
738 | memset(&event, 0, sizeof(event)); |
739 | event.event = IW_CM_EVENT_CLOSE; | |
740 | event.status = -ECONNRESET; | |
741 | if (ep->com.cm_id) { | |
742 | PDBG("abort delivered ep %p cm_id %p tid %d\n", ep, | |
743 | ep->com.cm_id, ep->hwtid); | |
744 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); | |
745 | ep->com.cm_id->rem_ref(ep->com.cm_id); | |
746 | ep->com.cm_id = NULL; | |
747 | ep->com.qp = NULL; | |
748 | } | |
749 | } | |
750 | ||
751 | static void connect_reply_upcall(struct iwch_ep *ep, int status) | |
752 | { | |
753 | struct iw_cm_event event; | |
754 | ||
33718363 | 755 | PDBG("%s ep %p status %d\n", __func__, ep, status); |
b038ced7 SW |
756 | memset(&event, 0, sizeof(event)); |
757 | event.event = IW_CM_EVENT_CONNECT_REPLY; | |
758 | event.status = status; | |
759 | event.local_addr = ep->com.local_addr; | |
760 | event.remote_addr = ep->com.remote_addr; | |
761 | ||
762 | if ((status == 0) || (status == -ECONNREFUSED)) { | |
763 | event.private_data_len = ep->plen; | |
764 | event.private_data = ep->mpa_pkt + sizeof(struct mpa_message); | |
765 | } | |
766 | if (ep->com.cm_id) { | |
33718363 | 767 | PDBG("%s ep %p tid %d status %d\n", __func__, ep, |
b038ced7 SW |
768 | ep->hwtid, status); |
769 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); | |
770 | } | |
771 | if (status < 0) { | |
772 | ep->com.cm_id->rem_ref(ep->com.cm_id); | |
773 | ep->com.cm_id = NULL; | |
774 | ep->com.qp = NULL; | |
775 | } | |
776 | } | |
777 | ||
778 | static void connect_request_upcall(struct iwch_ep *ep) | |
779 | { | |
780 | struct iw_cm_event event; | |
781 | ||
33718363 | 782 | PDBG("%s ep %p tid %d\n", __func__, ep, ep->hwtid); |
b038ced7 SW |
783 | memset(&event, 0, sizeof(event)); |
784 | event.event = IW_CM_EVENT_CONNECT_REQUEST; | |
785 | event.local_addr = ep->com.local_addr; | |
786 | event.remote_addr = ep->com.remote_addr; | |
787 | event.private_data_len = ep->plen; | |
788 | event.private_data = ep->mpa_pkt + sizeof(struct mpa_message); | |
789 | event.provider_data = ep; | |
6e47fe43 SW |
790 | if (state_read(&ep->parent_ep->com) != DEAD) { |
791 | get_ep(&ep->com); | |
b038ced7 SW |
792 | ep->parent_ep->com.cm_id->event_handler( |
793 | ep->parent_ep->com.cm_id, | |
794 | &event); | |
6e47fe43 | 795 | } |
b038ced7 SW |
796 | put_ep(&ep->parent_ep->com); |
797 | ep->parent_ep = NULL; | |
798 | } | |
799 | ||
800 | static void established_upcall(struct iwch_ep *ep) | |
801 | { | |
802 | struct iw_cm_event event; | |
803 | ||
33718363 | 804 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
805 | memset(&event, 0, sizeof(event)); |
806 | event.event = IW_CM_EVENT_ESTABLISHED; | |
807 | if (ep->com.cm_id) { | |
33718363 | 808 | PDBG("%s ep %p tid %d\n", __func__, ep, ep->hwtid); |
b038ced7 SW |
809 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); |
810 | } | |
811 | } | |
812 | ||
813 | static int update_rx_credits(struct iwch_ep *ep, u32 credits) | |
814 | { | |
815 | struct cpl_rx_data_ack *req; | |
816 | struct sk_buff *skb; | |
817 | ||
33718363 | 818 | PDBG("%s ep %p credits %u\n", __func__, ep, credits); |
b038ced7 SW |
819 | skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); |
820 | if (!skb) { | |
821 | printk(KERN_ERR MOD "update_rx_credits - cannot alloc skb!\n"); | |
822 | return 0; | |
823 | } | |
824 | ||
825 | req = (struct cpl_rx_data_ack *) skb_put(skb, sizeof(*req)); | |
826 | req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); | |
827 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_RX_DATA_ACK, ep->hwtid)); | |
828 | req->credit_dack = htonl(V_RX_CREDITS(credits) | V_RX_FORCE_ACK(1)); | |
829 | skb->priority = CPL_PRIORITY_ACK; | |
04b5d028 | 830 | iwch_cxgb3_ofld_send(ep->com.tdev, skb); |
b038ced7 SW |
831 | return credits; |
832 | } | |
833 | ||
834 | static void process_mpa_reply(struct iwch_ep *ep, struct sk_buff *skb) | |
835 | { | |
836 | struct mpa_message *mpa; | |
837 | u16 plen; | |
838 | struct iwch_qp_attributes attrs; | |
839 | enum iwch_qp_attr_mask mask; | |
840 | int err; | |
841 | ||
33718363 | 842 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
843 | |
844 | /* | |
845 | * Stop mpa timer. If it expired, then the state has | |
846 | * changed and we bail since ep_timeout already aborted | |
847 | * the connection. | |
848 | */ | |
849 | stop_ep_timer(ep); | |
850 | if (state_read(&ep->com) != MPA_REQ_SENT) | |
851 | return; | |
852 | ||
853 | /* | |
854 | * If we get more than the supported amount of private data | |
855 | * then we must fail this connection. | |
856 | */ | |
857 | if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) { | |
858 | err = -EINVAL; | |
859 | goto err; | |
860 | } | |
861 | ||
862 | /* | |
863 | * copy the new data into our accumulation buffer. | |
864 | */ | |
d626f62b ACM |
865 | skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]), |
866 | skb->len); | |
b038ced7 SW |
867 | ep->mpa_pkt_len += skb->len; |
868 | ||
869 | /* | |
870 | * if we don't even have the mpa message, then bail. | |
871 | */ | |
872 | if (ep->mpa_pkt_len < sizeof(*mpa)) | |
873 | return; | |
874 | mpa = (struct mpa_message *) ep->mpa_pkt; | |
875 | ||
876 | /* Validate MPA header. */ | |
877 | if (mpa->revision != mpa_rev) { | |
878 | err = -EPROTO; | |
879 | goto err; | |
880 | } | |
881 | if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) { | |
882 | err = -EPROTO; | |
883 | goto err; | |
884 | } | |
885 | ||
886 | plen = ntohs(mpa->private_data_size); | |
887 | ||
888 | /* | |
889 | * Fail if there's too much private data. | |
890 | */ | |
891 | if (plen > MPA_MAX_PRIVATE_DATA) { | |
892 | err = -EPROTO; | |
893 | goto err; | |
894 | } | |
895 | ||
896 | /* | |
897 | * If plen does not account for pkt size | |
898 | */ | |
899 | if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { | |
900 | err = -EPROTO; | |
901 | goto err; | |
902 | } | |
903 | ||
904 | ep->plen = (u8) plen; | |
905 | ||
906 | /* | |
907 | * If we don't have all the pdata yet, then bail. | |
908 | * We'll continue process when more data arrives. | |
909 | */ | |
910 | if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) | |
911 | return; | |
912 | ||
913 | if (mpa->flags & MPA_REJECT) { | |
914 | err = -ECONNREFUSED; | |
915 | goto err; | |
916 | } | |
917 | ||
918 | /* | |
919 | * If we get here we have accumulated the entire mpa | |
920 | * start reply message including private data. And | |
921 | * the MPA header is valid. | |
922 | */ | |
923 | state_set(&ep->com, FPDU_MODE); | |
f8b0dfd1 | 924 | ep->mpa_attr.initiator = 1; |
b038ced7 SW |
925 | ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; |
926 | ep->mpa_attr.recv_marker_enabled = markers_enabled; | |
927 | ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; | |
928 | ep->mpa_attr.version = mpa_rev; | |
929 | PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, " | |
33718363 | 930 | "xmit_marker_enabled=%d, version=%d\n", __func__, |
b038ced7 SW |
931 | ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, |
932 | ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version); | |
933 | ||
934 | attrs.mpa_attr = ep->mpa_attr; | |
935 | attrs.max_ird = ep->ird; | |
936 | attrs.max_ord = ep->ord; | |
937 | attrs.llp_stream_handle = ep; | |
938 | attrs.next_state = IWCH_QP_STATE_RTS; | |
939 | ||
940 | mask = IWCH_QP_ATTR_NEXT_STATE | | |
941 | IWCH_QP_ATTR_LLP_STREAM_HANDLE | IWCH_QP_ATTR_MPA_ATTR | | |
942 | IWCH_QP_ATTR_MAX_IRD | IWCH_QP_ATTR_MAX_ORD; | |
943 | ||
944 | /* bind QP and TID with INIT_WR */ | |
945 | err = iwch_modify_qp(ep->com.qp->rhp, | |
946 | ep->com.qp, mask, &attrs, 1); | |
f8b0dfd1 SW |
947 | if (err) |
948 | goto err; | |
949 | ||
950 | if (peer2peer && iwch_rqes_posted(ep->com.qp) == 0) { | |
951 | iwch_post_zb_read(ep->com.qp); | |
952 | } | |
953 | ||
954 | goto out; | |
b038ced7 SW |
955 | err: |
956 | abort_connection(ep, skb, GFP_KERNEL); | |
957 | out: | |
958 | connect_reply_upcall(ep, err); | |
959 | return; | |
960 | } | |
961 | ||
962 | static void process_mpa_request(struct iwch_ep *ep, struct sk_buff *skb) | |
963 | { | |
964 | struct mpa_message *mpa; | |
965 | u16 plen; | |
966 | ||
33718363 | 967 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
968 | |
969 | /* | |
970 | * Stop mpa timer. If it expired, then the state has | |
971 | * changed and we bail since ep_timeout already aborted | |
972 | * the connection. | |
973 | */ | |
974 | stop_ep_timer(ep); | |
975 | if (state_read(&ep->com) != MPA_REQ_WAIT) | |
976 | return; | |
977 | ||
978 | /* | |
979 | * If we get more than the supported amount of private data | |
980 | * then we must fail this connection. | |
981 | */ | |
982 | if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) { | |
983 | abort_connection(ep, skb, GFP_KERNEL); | |
984 | return; | |
985 | } | |
986 | ||
33718363 | 987 | PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__); |
b038ced7 SW |
988 | |
989 | /* | |
990 | * Copy the new data into our accumulation buffer. | |
991 | */ | |
d626f62b ACM |
992 | skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]), |
993 | skb->len); | |
b038ced7 SW |
994 | ep->mpa_pkt_len += skb->len; |
995 | ||
996 | /* | |
997 | * If we don't even have the mpa message, then bail. | |
998 | * We'll continue process when more data arrives. | |
999 | */ | |
1000 | if (ep->mpa_pkt_len < sizeof(*mpa)) | |
1001 | return; | |
33718363 | 1002 | PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__); |
b038ced7 SW |
1003 | mpa = (struct mpa_message *) ep->mpa_pkt; |
1004 | ||
1005 | /* | |
1006 | * Validate MPA Header. | |
1007 | */ | |
1008 | if (mpa->revision != mpa_rev) { | |
1009 | abort_connection(ep, skb, GFP_KERNEL); | |
1010 | return; | |
1011 | } | |
1012 | ||
1013 | if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key))) { | |
1014 | abort_connection(ep, skb, GFP_KERNEL); | |
1015 | return; | |
1016 | } | |
1017 | ||
1018 | plen = ntohs(mpa->private_data_size); | |
1019 | ||
1020 | /* | |
1021 | * Fail if there's too much private data. | |
1022 | */ | |
1023 | if (plen > MPA_MAX_PRIVATE_DATA) { | |
1024 | abort_connection(ep, skb, GFP_KERNEL); | |
1025 | return; | |
1026 | } | |
1027 | ||
1028 | /* | |
1029 | * If plen does not account for pkt size | |
1030 | */ | |
1031 | if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { | |
1032 | abort_connection(ep, skb, GFP_KERNEL); | |
1033 | return; | |
1034 | } | |
1035 | ep->plen = (u8) plen; | |
1036 | ||
1037 | /* | |
1038 | * If we don't have all the pdata yet, then bail. | |
1039 | */ | |
1040 | if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) | |
1041 | return; | |
1042 | ||
1043 | /* | |
1044 | * If we get here we have accumulated the entire mpa | |
1045 | * start reply message including private data. | |
1046 | */ | |
f8b0dfd1 | 1047 | ep->mpa_attr.initiator = 0; |
b038ced7 SW |
1048 | ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; |
1049 | ep->mpa_attr.recv_marker_enabled = markers_enabled; | |
1050 | ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; | |
1051 | ep->mpa_attr.version = mpa_rev; | |
1052 | PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, " | |
33718363 | 1053 | "xmit_marker_enabled=%d, version=%d\n", __func__, |
b038ced7 SW |
1054 | ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, |
1055 | ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version); | |
1056 | ||
1057 | state_set(&ep->com, MPA_REQ_RCVD); | |
1058 | ||
1059 | /* drive upcall */ | |
1060 | connect_request_upcall(ep); | |
1061 | return; | |
1062 | } | |
1063 | ||
1064 | static int rx_data(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) | |
1065 | { | |
1066 | struct iwch_ep *ep = ctx; | |
1067 | struct cpl_rx_data *hdr = cplhdr(skb); | |
1068 | unsigned int dlen = ntohs(hdr->len); | |
1069 | ||
33718363 | 1070 | PDBG("%s ep %p dlen %u\n", __func__, ep, dlen); |
b038ced7 SW |
1071 | |
1072 | skb_pull(skb, sizeof(*hdr)); | |
1073 | skb_trim(skb, dlen); | |
1074 | ||
de3d3530 SW |
1075 | ep->rcv_seq += dlen; |
1076 | BUG_ON(ep->rcv_seq != (ntohl(hdr->seq) + dlen)); | |
1077 | ||
b038ced7 SW |
1078 | switch (state_read(&ep->com)) { |
1079 | case MPA_REQ_SENT: | |
1080 | process_mpa_reply(ep, skb); | |
1081 | break; | |
1082 | case MPA_REQ_WAIT: | |
1083 | process_mpa_request(ep, skb); | |
1084 | break; | |
1085 | case MPA_REP_SENT: | |
1086 | break; | |
1087 | default: | |
1088 | printk(KERN_ERR MOD "%s Unexpected streaming data." | |
1089 | " ep %p state %d tid %d\n", | |
33718363 | 1090 | __func__, ep, state_read(&ep->com), ep->hwtid); |
b038ced7 SW |
1091 | |
1092 | /* | |
1093 | * The ep will timeout and inform the ULP of the failure. | |
1094 | * See ep_timeout(). | |
1095 | */ | |
1096 | break; | |
1097 | } | |
1098 | ||
1099 | /* update RX credits */ | |
1100 | update_rx_credits(ep, dlen); | |
1101 | ||
1102 | return CPL_RET_BUF_DONE; | |
1103 | } | |
1104 | ||
1105 | /* | |
1106 | * Upcall from the adapter indicating data has been transmitted. | |
1107 | * For us its just the single MPA request or reply. We can now free | |
1108 | * the skb holding the mpa message. | |
1109 | */ | |
1110 | static int tx_ack(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) | |
1111 | { | |
1112 | struct iwch_ep *ep = ctx; | |
1113 | struct cpl_wr_ack *hdr = cplhdr(skb); | |
1114 | unsigned int credits = ntohs(hdr->credits); | |
b038ced7 | 1115 | |
33718363 | 1116 | PDBG("%s ep %p credits %u\n", __func__, ep, credits); |
b038ced7 | 1117 | |
f8b0dfd1 SW |
1118 | if (credits == 0) { |
1119 | PDBG(KERN_ERR "%s 0 credit ack ep %p state %u\n", | |
1120 | __func__, ep, state_read(&ep->com)); | |
b038ced7 | 1121 | return CPL_RET_BUF_DONE; |
f8b0dfd1 SW |
1122 | } |
1123 | ||
b038ced7 | 1124 | BUG_ON(credits != 1); |
b038ced7 | 1125 | dst_confirm(ep->dst); |
f8b0dfd1 SW |
1126 | if (!ep->mpa_skb) { |
1127 | PDBG("%s rdma_init wr_ack ep %p state %u\n", | |
1128 | __func__, ep, state_read(&ep->com)); | |
1129 | if (ep->mpa_attr.initiator) { | |
1130 | PDBG("%s initiator ep %p state %u\n", | |
1131 | __func__, ep, state_read(&ep->com)); | |
1132 | if (peer2peer) | |
1133 | iwch_post_zb_read(ep->com.qp); | |
1134 | } else { | |
1135 | PDBG("%s responder ep %p state %u\n", | |
1136 | __func__, ep, state_read(&ep->com)); | |
1137 | ep->com.rpl_done = 1; | |
1138 | wake_up(&ep->com.waitq); | |
1139 | } | |
1140 | } else { | |
1141 | PDBG("%s lsm ack ep %p state %u freeing skb\n", | |
1142 | __func__, ep, state_read(&ep->com)); | |
1143 | kfree_skb(ep->mpa_skb); | |
1144 | ep->mpa_skb = NULL; | |
b038ced7 SW |
1145 | } |
1146 | return CPL_RET_BUF_DONE; | |
1147 | } | |
1148 | ||
1149 | static int abort_rpl(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) | |
1150 | { | |
1151 | struct iwch_ep *ep = ctx; | |
989a1780 SW |
1152 | unsigned long flags; |
1153 | int release = 0; | |
b038ced7 | 1154 | |
33718363 | 1155 | PDBG("%s ep %p\n", __func__, ep); |
989a1780 | 1156 | BUG_ON(!ep); |
b038ced7 | 1157 | |
aff9e39d SW |
1158 | /* |
1159 | * We get 2 abort replies from the HW. The first one must | |
1160 | * be ignored except for scribbling that we need one more. | |
1161 | */ | |
6e47fe43 | 1162 | if (!test_and_set_bit(ABORT_REQ_IN_PROGRESS, &ep->com.flags)) { |
aff9e39d SW |
1163 | return CPL_RET_BUF_DONE; |
1164 | } | |
1165 | ||
989a1780 SW |
1166 | spin_lock_irqsave(&ep->com.lock, flags); |
1167 | switch (ep->com.state) { | |
1168 | case ABORTING: | |
1169 | close_complete_upcall(ep); | |
1170 | __state_set(&ep->com, DEAD); | |
1171 | release = 1; | |
1172 | break; | |
1173 | default: | |
1174 | printk(KERN_ERR "%s ep %p state %d\n", | |
1175 | __func__, ep, ep->com.state); | |
1176 | break; | |
1177 | } | |
1178 | spin_unlock_irqrestore(&ep->com.lock, flags); | |
1179 | ||
1180 | if (release) | |
1181 | release_ep_resources(ep); | |
b038ced7 SW |
1182 | return CPL_RET_BUF_DONE; |
1183 | } | |
1184 | ||
96d0e493 SW |
1185 | /* |
1186 | * Return whether a failed active open has allocated a TID | |
1187 | */ | |
1188 | static inline int act_open_has_tid(int status) | |
1189 | { | |
1190 | return status != CPL_ERR_TCAM_FULL && status != CPL_ERR_CONN_EXIST && | |
1191 | status != CPL_ERR_ARP_MISS; | |
1192 | } | |
1193 | ||
b038ced7 SW |
1194 | static int act_open_rpl(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) |
1195 | { | |
1196 | struct iwch_ep *ep = ctx; | |
1197 | struct cpl_act_open_rpl *rpl = cplhdr(skb); | |
1198 | ||
33718363 | 1199 | PDBG("%s ep %p status %u errno %d\n", __func__, ep, rpl->status, |
b038ced7 SW |
1200 | status2errno(rpl->status)); |
1201 | connect_reply_upcall(ep, status2errno(rpl->status)); | |
1202 | state_set(&ep->com, DEAD); | |
8176d297 | 1203 | if (ep->com.tdev->type != T3A && act_open_has_tid(rpl->status)) |
b038ced7 SW |
1204 | release_tid(ep->com.tdev, GET_TID(rpl), NULL); |
1205 | cxgb3_free_atid(ep->com.tdev, ep->atid); | |
1206 | dst_release(ep->dst); | |
1207 | l2t_release(L2DATA(ep->com.tdev), ep->l2t); | |
1208 | put_ep(&ep->com); | |
1209 | return CPL_RET_BUF_DONE; | |
1210 | } | |
1211 | ||
1212 | static int listen_start(struct iwch_listen_ep *ep) | |
1213 | { | |
1214 | struct sk_buff *skb; | |
1215 | struct cpl_pass_open_req *req; | |
1216 | ||
33718363 | 1217 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
1218 | skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); |
1219 | if (!skb) { | |
1220 | printk(KERN_ERR MOD "t3c_listen_start failed to alloc skb!\n"); | |
1221 | return -ENOMEM; | |
1222 | } | |
1223 | ||
1224 | req = (struct cpl_pass_open_req *) skb_put(skb, sizeof(*req)); | |
1225 | req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); | |
1226 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_PASS_OPEN_REQ, ep->stid)); | |
1227 | req->local_port = ep->com.local_addr.sin_port; | |
1228 | req->local_ip = ep->com.local_addr.sin_addr.s_addr; | |
1229 | req->peer_port = 0; | |
1230 | req->peer_ip = 0; | |
1231 | req->peer_netmask = 0; | |
1232 | req->opt0h = htonl(F_DELACK | F_TCAM_BYPASS); | |
1233 | req->opt0l = htonl(V_RCV_BUFSIZ(rcv_win>>10)); | |
1234 | req->opt1 = htonl(V_CONN_POLICY(CPL_CONN_POLICY_ASK)); | |
1235 | ||
1236 | skb->priority = 1; | |
04b5d028 | 1237 | return iwch_cxgb3_ofld_send(ep->com.tdev, skb); |
b038ced7 SW |
1238 | } |
1239 | ||
1240 | static int pass_open_rpl(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) | |
1241 | { | |
1242 | struct iwch_listen_ep *ep = ctx; | |
1243 | struct cpl_pass_open_rpl *rpl = cplhdr(skb); | |
1244 | ||
33718363 | 1245 | PDBG("%s ep %p status %d error %d\n", __func__, ep, |
b038ced7 SW |
1246 | rpl->status, status2errno(rpl->status)); |
1247 | ep->com.rpl_err = status2errno(rpl->status); | |
1248 | ep->com.rpl_done = 1; | |
1249 | wake_up(&ep->com.waitq); | |
1250 | ||
1251 | return CPL_RET_BUF_DONE; | |
1252 | } | |
1253 | ||
1254 | static int listen_stop(struct iwch_listen_ep *ep) | |
1255 | { | |
1256 | struct sk_buff *skb; | |
1257 | struct cpl_close_listserv_req *req; | |
1258 | ||
33718363 | 1259 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
1260 | skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); |
1261 | if (!skb) { | |
33718363 | 1262 | printk(KERN_ERR MOD "%s - failed to alloc skb\n", __func__); |
b038ced7 SW |
1263 | return -ENOMEM; |
1264 | } | |
1265 | req = (struct cpl_close_listserv_req *) skb_put(skb, sizeof(*req)); | |
1266 | req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); | |
60be4b59 | 1267 | req->cpu_idx = 0; |
b038ced7 SW |
1268 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_CLOSE_LISTSRV_REQ, ep->stid)); |
1269 | skb->priority = 1; | |
04b5d028 | 1270 | return iwch_cxgb3_ofld_send(ep->com.tdev, skb); |
b038ced7 SW |
1271 | } |
1272 | ||
1273 | static int close_listsrv_rpl(struct t3cdev *tdev, struct sk_buff *skb, | |
1274 | void *ctx) | |
1275 | { | |
1276 | struct iwch_listen_ep *ep = ctx; | |
1277 | struct cpl_close_listserv_rpl *rpl = cplhdr(skb); | |
1278 | ||
33718363 | 1279 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
1280 | ep->com.rpl_err = status2errno(rpl->status); |
1281 | ep->com.rpl_done = 1; | |
1282 | wake_up(&ep->com.waitq); | |
1283 | return CPL_RET_BUF_DONE; | |
1284 | } | |
1285 | ||
1286 | static void accept_cr(struct iwch_ep *ep, __be32 peer_ip, struct sk_buff *skb) | |
1287 | { | |
1288 | struct cpl_pass_accept_rpl *rpl; | |
1289 | unsigned int mtu_idx; | |
1290 | u32 opt0h, opt0l, opt2; | |
1291 | int wscale; | |
1292 | ||
33718363 | 1293 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
1294 | BUG_ON(skb_cloned(skb)); |
1295 | skb_trim(skb, sizeof(*rpl)); | |
1296 | skb_get(skb); | |
1297 | mtu_idx = find_best_mtu(T3C_DATA(ep->com.tdev), dst_mtu(ep->dst)); | |
1298 | wscale = compute_wscale(rcv_win); | |
1299 | opt0h = V_NAGLE(0) | | |
1300 | V_NO_CONG(nocong) | | |
1301 | V_KEEP_ALIVE(1) | | |
1302 | F_TCAM_BYPASS | | |
1303 | V_WND_SCALE(wscale) | | |
1304 | V_MSS_IDX(mtu_idx) | | |
1305 | V_L2T_IDX(ep->l2t->idx) | V_TX_CHANNEL(ep->l2t->smt_idx); | |
1306 | opt0l = V_TOS((ep->tos >> 2) & M_TOS) | V_RCV_BUFSIZ(rcv_win>>10); | |
1307 | opt2 = V_FLAVORS_VALID(1) | V_CONG_CONTROL_FLAVOR(cong_flavor); | |
1308 | ||
1309 | rpl = cplhdr(skb); | |
1310 | rpl->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); | |
1311 | OPCODE_TID(rpl) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL, ep->hwtid)); | |
1312 | rpl->peer_ip = peer_ip; | |
1313 | rpl->opt0h = htonl(opt0h); | |
1314 | rpl->opt0l_status = htonl(opt0l | CPL_PASS_OPEN_ACCEPT); | |
1315 | rpl->opt2 = htonl(opt2); | |
1316 | rpl->rsvd = rpl->opt2; /* workaround for HW bug */ | |
1317 | skb->priority = CPL_PRIORITY_SETUP; | |
04b5d028 | 1318 | iwch_l2t_send(ep->com.tdev, skb, ep->l2t); |
b038ced7 SW |
1319 | |
1320 | return; | |
1321 | } | |
1322 | ||
1323 | static void reject_cr(struct t3cdev *tdev, u32 hwtid, __be32 peer_ip, | |
1324 | struct sk_buff *skb) | |
1325 | { | |
33718363 | 1326 | PDBG("%s t3cdev %p tid %u peer_ip %x\n", __func__, tdev, hwtid, |
b038ced7 SW |
1327 | peer_ip); |
1328 | BUG_ON(skb_cloned(skb)); | |
1329 | skb_trim(skb, sizeof(struct cpl_tid_release)); | |
1330 | skb_get(skb); | |
1331 | ||
8176d297 | 1332 | if (tdev->type != T3A) |
b038ced7 SW |
1333 | release_tid(tdev, hwtid, skb); |
1334 | else { | |
1335 | struct cpl_pass_accept_rpl *rpl; | |
1336 | ||
1337 | rpl = cplhdr(skb); | |
1338 | skb->priority = CPL_PRIORITY_SETUP; | |
1339 | rpl->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); | |
1340 | OPCODE_TID(rpl) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL, | |
1341 | hwtid)); | |
1342 | rpl->peer_ip = peer_ip; | |
1343 | rpl->opt0h = htonl(F_TCAM_BYPASS); | |
1344 | rpl->opt0l_status = htonl(CPL_PASS_OPEN_REJECT); | |
1345 | rpl->opt2 = 0; | |
1346 | rpl->rsvd = rpl->opt2; | |
04b5d028 | 1347 | iwch_cxgb3_ofld_send(tdev, skb); |
b038ced7 SW |
1348 | } |
1349 | } | |
1350 | ||
1351 | static int pass_accept_req(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) | |
1352 | { | |
1353 | struct iwch_ep *child_ep, *parent_ep = ctx; | |
1354 | struct cpl_pass_accept_req *req = cplhdr(skb); | |
1355 | unsigned int hwtid = GET_TID(req); | |
1356 | struct dst_entry *dst; | |
1357 | struct l2t_entry *l2t; | |
1358 | struct rtable *rt; | |
1359 | struct iff_mac tim; | |
1360 | ||
33718363 | 1361 | PDBG("%s parent ep %p tid %u\n", __func__, parent_ep, hwtid); |
b038ced7 SW |
1362 | |
1363 | if (state_read(&parent_ep->com) != LISTEN) { | |
1364 | printk(KERN_ERR "%s - listening ep not in LISTEN\n", | |
33718363 | 1365 | __func__); |
b038ced7 SW |
1366 | goto reject; |
1367 | } | |
1368 | ||
1369 | /* | |
1370 | * Find the netdev for this connection request. | |
1371 | */ | |
1372 | tim.mac_addr = req->dst_mac; | |
1373 | tim.vlan_tag = ntohs(req->vlan_tag); | |
1374 | if (tdev->ctl(tdev, GET_IFF_FROM_MAC, &tim) < 0 || !tim.dev) { | |
eacc4d6a HS |
1375 | printk(KERN_ERR "%s bad dst mac %pM\n", |
1376 | __func__, req->dst_mac); | |
b038ced7 SW |
1377 | goto reject; |
1378 | } | |
1379 | ||
1380 | /* Find output route */ | |
1381 | rt = find_route(tdev, | |
1382 | req->local_ip, | |
1383 | req->peer_ip, | |
1384 | req->local_port, | |
1385 | req->peer_port, G_PASS_OPEN_TOS(ntohl(req->tos_tid))); | |
1386 | if (!rt) { | |
1387 | printk(KERN_ERR MOD "%s - failed to find dst entry!\n", | |
33718363 | 1388 | __func__); |
b038ced7 SW |
1389 | goto reject; |
1390 | } | |
1391 | dst = &rt->u.dst; | |
1392 | l2t = t3_l2t_get(tdev, dst->neighbour, dst->neighbour->dev); | |
1393 | if (!l2t) { | |
1394 | printk(KERN_ERR MOD "%s - failed to allocate l2t entry!\n", | |
33718363 | 1395 | __func__); |
b038ced7 SW |
1396 | dst_release(dst); |
1397 | goto reject; | |
1398 | } | |
1399 | child_ep = alloc_ep(sizeof(*child_ep), GFP_KERNEL); | |
1400 | if (!child_ep) { | |
1401 | printk(KERN_ERR MOD "%s - failed to allocate ep entry!\n", | |
33718363 | 1402 | __func__); |
b038ced7 SW |
1403 | l2t_release(L2DATA(tdev), l2t); |
1404 | dst_release(dst); | |
1405 | goto reject; | |
1406 | } | |
1407 | state_set(&child_ep->com, CONNECTING); | |
1408 | child_ep->com.tdev = tdev; | |
1409 | child_ep->com.cm_id = NULL; | |
1410 | child_ep->com.local_addr.sin_family = PF_INET; | |
1411 | child_ep->com.local_addr.sin_port = req->local_port; | |
1412 | child_ep->com.local_addr.sin_addr.s_addr = req->local_ip; | |
1413 | child_ep->com.remote_addr.sin_family = PF_INET; | |
1414 | child_ep->com.remote_addr.sin_port = req->peer_port; | |
1415 | child_ep->com.remote_addr.sin_addr.s_addr = req->peer_ip; | |
1416 | get_ep(&parent_ep->com); | |
1417 | child_ep->parent_ep = parent_ep; | |
1418 | child_ep->tos = G_PASS_OPEN_TOS(ntohl(req->tos_tid)); | |
1419 | child_ep->l2t = l2t; | |
1420 | child_ep->dst = dst; | |
1421 | child_ep->hwtid = hwtid; | |
1422 | init_timer(&child_ep->timer); | |
1423 | cxgb3_insert_tid(tdev, &t3c_client, child_ep, hwtid); | |
1424 | accept_cr(child_ep, req->peer_ip, skb); | |
1425 | goto out; | |
1426 | reject: | |
1427 | reject_cr(tdev, hwtid, req->peer_ip, skb); | |
1428 | out: | |
1429 | return CPL_RET_BUF_DONE; | |
1430 | } | |
1431 | ||
1432 | static int pass_establish(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) | |
1433 | { | |
1434 | struct iwch_ep *ep = ctx; | |
1435 | struct cpl_pass_establish *req = cplhdr(skb); | |
1436 | ||
33718363 | 1437 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 | 1438 | ep->snd_seq = ntohl(req->snd_isn); |
de3d3530 | 1439 | ep->rcv_seq = ntohl(req->rcv_isn); |
b038ced7 SW |
1440 | |
1441 | set_emss(ep, ntohs(req->tcp_opt)); | |
1442 | ||
1443 | dst_confirm(ep->dst); | |
1444 | state_set(&ep->com, MPA_REQ_WAIT); | |
1445 | start_ep_timer(ep); | |
1446 | ||
1447 | return CPL_RET_BUF_DONE; | |
1448 | } | |
1449 | ||
1450 | static int peer_close(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) | |
1451 | { | |
1452 | struct iwch_ep *ep = ctx; | |
1453 | struct iwch_qp_attributes attrs; | |
1454 | unsigned long flags; | |
1455 | int disconnect = 1; | |
1456 | int release = 0; | |
1457 | ||
33718363 | 1458 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
1459 | dst_confirm(ep->dst); |
1460 | ||
1461 | spin_lock_irqsave(&ep->com.lock, flags); | |
1462 | switch (ep->com.state) { | |
1463 | case MPA_REQ_WAIT: | |
1464 | __state_set(&ep->com, CLOSING); | |
1465 | break; | |
1466 | case MPA_REQ_SENT: | |
1467 | __state_set(&ep->com, CLOSING); | |
1468 | connect_reply_upcall(ep, -ECONNRESET); | |
1469 | break; | |
1470 | case MPA_REQ_RCVD: | |
1471 | ||
1472 | /* | |
1473 | * We're gonna mark this puppy DEAD, but keep | |
1474 | * the reference on it until the ULP accepts or | |
a52bf98d SW |
1475 | * rejects the CR. Also wake up anyone waiting |
1476 | * in rdma connection migration (see iwch_accept_cr()). | |
b038ced7 SW |
1477 | */ |
1478 | __state_set(&ep->com, CLOSING); | |
a52bf98d SW |
1479 | ep->com.rpl_done = 1; |
1480 | ep->com.rpl_err = -ECONNRESET; | |
1481 | PDBG("waking up ep %p\n", ep); | |
1482 | wake_up(&ep->com.waitq); | |
b038ced7 SW |
1483 | break; |
1484 | case MPA_REP_SENT: | |
1485 | __state_set(&ep->com, CLOSING); | |
1486 | ep->com.rpl_done = 1; | |
1487 | ep->com.rpl_err = -ECONNRESET; | |
1488 | PDBG("waking up ep %p\n", ep); | |
1489 | wake_up(&ep->com.waitq); | |
1490 | break; | |
1491 | case FPDU_MODE: | |
42e31753 | 1492 | start_ep_timer(ep); |
b038ced7 SW |
1493 | __state_set(&ep->com, CLOSING); |
1494 | attrs.next_state = IWCH_QP_STATE_CLOSING; | |
1495 | iwch_modify_qp(ep->com.qp->rhp, ep->com.qp, | |
1496 | IWCH_QP_ATTR_NEXT_STATE, &attrs, 1); | |
1497 | peer_close_upcall(ep); | |
1498 | break; | |
1499 | case ABORTING: | |
1500 | disconnect = 0; | |
1501 | break; | |
1502 | case CLOSING: | |
b038ced7 SW |
1503 | __state_set(&ep->com, MORIBUND); |
1504 | disconnect = 0; | |
1505 | break; | |
1506 | case MORIBUND: | |
1507 | stop_ep_timer(ep); | |
1508 | if (ep->com.cm_id && ep->com.qp) { | |
1509 | attrs.next_state = IWCH_QP_STATE_IDLE; | |
1510 | iwch_modify_qp(ep->com.qp->rhp, ep->com.qp, | |
1511 | IWCH_QP_ATTR_NEXT_STATE, &attrs, 1); | |
1512 | } | |
1513 | close_complete_upcall(ep); | |
1514 | __state_set(&ep->com, DEAD); | |
1515 | release = 1; | |
1516 | disconnect = 0; | |
1517 | break; | |
1518 | case DEAD: | |
1519 | disconnect = 0; | |
1520 | break; | |
1521 | default: | |
1522 | BUG_ON(1); | |
1523 | } | |
1524 | spin_unlock_irqrestore(&ep->com.lock, flags); | |
1525 | if (disconnect) | |
1526 | iwch_ep_disconnect(ep, 0, GFP_KERNEL); | |
1527 | if (release) | |
1528 | release_ep_resources(ep); | |
1529 | return CPL_RET_BUF_DONE; | |
1530 | } | |
1531 | ||
1532 | /* | |
1533 | * Returns whether an ABORT_REQ_RSS message is a negative advice. | |
1534 | */ | |
2b540355 | 1535 | static int is_neg_adv_abort(unsigned int status) |
b038ced7 SW |
1536 | { |
1537 | return status == CPL_ERR_RTX_NEG_ADVICE || | |
1538 | status == CPL_ERR_PERSIST_NEG_ADVICE; | |
1539 | } | |
1540 | ||
1541 | static int peer_abort(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) | |
1542 | { | |
1543 | struct cpl_abort_req_rss *req = cplhdr(skb); | |
1544 | struct iwch_ep *ep = ctx; | |
1545 | struct cpl_abort_rpl *rpl; | |
1546 | struct sk_buff *rpl_skb; | |
1547 | struct iwch_qp_attributes attrs; | |
1548 | int ret; | |
989a1780 SW |
1549 | int release = 0; |
1550 | unsigned long flags; | |
b038ced7 | 1551 | |
1580367e | 1552 | if (is_neg_adv_abort(req->status)) { |
33718363 | 1553 | PDBG("%s neg_adv_abort ep %p tid %d\n", __func__, ep, |
1580367e SW |
1554 | ep->hwtid); |
1555 | t3_l2t_send_event(ep->com.tdev, ep->l2t); | |
1556 | return CPL_RET_BUF_DONE; | |
1557 | } | |
1558 | ||
aff9e39d SW |
1559 | /* |
1560 | * We get 2 peer aborts from the HW. The first one must | |
1561 | * be ignored except for scribbling that we need one more. | |
1562 | */ | |
6e47fe43 | 1563 | if (!test_and_set_bit(PEER_ABORT_IN_PROGRESS, &ep->com.flags)) { |
aff9e39d SW |
1564 | return CPL_RET_BUF_DONE; |
1565 | } | |
1566 | ||
989a1780 SW |
1567 | spin_lock_irqsave(&ep->com.lock, flags); |
1568 | PDBG("%s ep %p state %u\n", __func__, ep, ep->com.state); | |
1569 | switch (ep->com.state) { | |
b038ced7 SW |
1570 | case CONNECTING: |
1571 | break; | |
1572 | case MPA_REQ_WAIT: | |
adf376b3 | 1573 | stop_ep_timer(ep); |
b038ced7 SW |
1574 | break; |
1575 | case MPA_REQ_SENT: | |
adf376b3 | 1576 | stop_ep_timer(ep); |
b038ced7 SW |
1577 | connect_reply_upcall(ep, -ECONNRESET); |
1578 | break; | |
1579 | case MPA_REP_SENT: | |
1580 | ep->com.rpl_done = 1; | |
1581 | ep->com.rpl_err = -ECONNRESET; | |
1582 | PDBG("waking up ep %p\n", ep); | |
1583 | wake_up(&ep->com.waitq); | |
1584 | break; | |
1585 | case MPA_REQ_RCVD: | |
1586 | ||
1587 | /* | |
1588 | * We're gonna mark this puppy DEAD, but keep | |
1589 | * the reference on it until the ULP accepts or | |
a52bf98d SW |
1590 | * rejects the CR. Also wake up anyone waiting |
1591 | * in rdma connection migration (see iwch_accept_cr()). | |
b038ced7 | 1592 | */ |
a52bf98d SW |
1593 | ep->com.rpl_done = 1; |
1594 | ep->com.rpl_err = -ECONNRESET; | |
1595 | PDBG("waking up ep %p\n", ep); | |
1596 | wake_up(&ep->com.waitq); | |
b038ced7 SW |
1597 | break; |
1598 | case MORIBUND: | |
42e31753 | 1599 | case CLOSING: |
b038ced7 | 1600 | stop_ep_timer(ep); |
42e31753 | 1601 | /*FALLTHROUGH*/ |
b038ced7 | 1602 | case FPDU_MODE: |
b038ced7 SW |
1603 | if (ep->com.cm_id && ep->com.qp) { |
1604 | attrs.next_state = IWCH_QP_STATE_ERROR; | |
1605 | ret = iwch_modify_qp(ep->com.qp->rhp, | |
1606 | ep->com.qp, IWCH_QP_ATTR_NEXT_STATE, | |
1607 | &attrs, 1); | |
1608 | if (ret) | |
1609 | printk(KERN_ERR MOD | |
1610 | "%s - qp <- error failed!\n", | |
33718363 | 1611 | __func__); |
b038ced7 SW |
1612 | } |
1613 | peer_abort_upcall(ep); | |
1614 | break; | |
1615 | case ABORTING: | |
1616 | break; | |
1617 | case DEAD: | |
33718363 | 1618 | PDBG("%s PEER_ABORT IN DEAD STATE!!!!\n", __func__); |
989a1780 | 1619 | spin_unlock_irqrestore(&ep->com.lock, flags); |
b038ced7 SW |
1620 | return CPL_RET_BUF_DONE; |
1621 | default: | |
1622 | BUG_ON(1); | |
1623 | break; | |
1624 | } | |
1625 | dst_confirm(ep->dst); | |
989a1780 SW |
1626 | if (ep->com.state != ABORTING) { |
1627 | __state_set(&ep->com, DEAD); | |
1628 | release = 1; | |
1629 | } | |
1630 | spin_unlock_irqrestore(&ep->com.lock, flags); | |
b038ced7 SW |
1631 | |
1632 | rpl_skb = get_skb(skb, sizeof(*rpl), GFP_KERNEL); | |
1633 | if (!rpl_skb) { | |
1634 | printk(KERN_ERR MOD "%s - cannot allocate skb!\n", | |
33718363 | 1635 | __func__); |
989a1780 SW |
1636 | release = 1; |
1637 | goto out; | |
b038ced7 SW |
1638 | } |
1639 | rpl_skb->priority = CPL_PRIORITY_DATA; | |
1640 | rpl = (struct cpl_abort_rpl *) skb_put(rpl_skb, sizeof(*rpl)); | |
1641 | rpl->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_HOST_ABORT_CON_RPL)); | |
1642 | rpl->wr.wr_lo = htonl(V_WR_TID(ep->hwtid)); | |
1643 | OPCODE_TID(rpl) = htonl(MK_OPCODE_TID(CPL_ABORT_RPL, ep->hwtid)); | |
1644 | rpl->cmd = CPL_ABORT_NO_RST; | |
04b5d028 | 1645 | iwch_cxgb3_ofld_send(ep->com.tdev, rpl_skb); |
989a1780 SW |
1646 | out: |
1647 | if (release) | |
b038ced7 | 1648 | release_ep_resources(ep); |
b038ced7 SW |
1649 | return CPL_RET_BUF_DONE; |
1650 | } | |
1651 | ||
1652 | static int close_con_rpl(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) | |
1653 | { | |
1654 | struct iwch_ep *ep = ctx; | |
1655 | struct iwch_qp_attributes attrs; | |
1656 | unsigned long flags; | |
1657 | int release = 0; | |
1658 | ||
33718363 | 1659 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
1660 | BUG_ON(!ep); |
1661 | ||
1662 | /* The cm_id may be null if we failed to connect */ | |
1663 | spin_lock_irqsave(&ep->com.lock, flags); | |
1664 | switch (ep->com.state) { | |
1665 | case CLOSING: | |
b038ced7 SW |
1666 | __state_set(&ep->com, MORIBUND); |
1667 | break; | |
1668 | case MORIBUND: | |
1669 | stop_ep_timer(ep); | |
1670 | if ((ep->com.cm_id) && (ep->com.qp)) { | |
1671 | attrs.next_state = IWCH_QP_STATE_IDLE; | |
1672 | iwch_modify_qp(ep->com.qp->rhp, | |
1673 | ep->com.qp, | |
1674 | IWCH_QP_ATTR_NEXT_STATE, | |
1675 | &attrs, 1); | |
1676 | } | |
1677 | close_complete_upcall(ep); | |
1678 | __state_set(&ep->com, DEAD); | |
1679 | release = 1; | |
1680 | break; | |
42e31753 | 1681 | case ABORTING: |
b038ced7 | 1682 | case DEAD: |
c4d49776 | 1683 | break; |
b038ced7 SW |
1684 | default: |
1685 | BUG_ON(1); | |
1686 | break; | |
1687 | } | |
1688 | spin_unlock_irqrestore(&ep->com.lock, flags); | |
1689 | if (release) | |
1690 | release_ep_resources(ep); | |
1691 | return CPL_RET_BUF_DONE; | |
1692 | } | |
1693 | ||
1694 | /* | |
1695 | * T3A does 3 things when a TERM is received: | |
1696 | * 1) send up a CPL_RDMA_TERMINATE message with the TERM packet | |
1697 | * 2) generate an async event on the QP with the TERMINATE opcode | |
1698 | * 3) post a TERMINATE opcde cqe into the associated CQ. | |
1699 | * | |
1700 | * For (1), we save the message in the qp for later consumer consumption. | |
1701 | * For (2), we move the QP into TERMINATE, post a QP event and disconnect. | |
1702 | * For (3), we toss the CQE in cxio_poll_cq(). | |
1703 | * | |
1704 | * terminate() handles case (1)... | |
1705 | */ | |
1706 | static int terminate(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) | |
1707 | { | |
1708 | struct iwch_ep *ep = ctx; | |
1709 | ||
42fb61f0 SW |
1710 | if (state_read(&ep->com) != FPDU_MODE) |
1711 | return CPL_RET_BUF_DONE; | |
1712 | ||
33718363 | 1713 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 | 1714 | skb_pull(skb, sizeof(struct cpl_rdma_terminate)); |
33718363 | 1715 | PDBG("%s saving %d bytes of term msg\n", __func__, skb->len); |
d626f62b ACM |
1716 | skb_copy_from_linear_data(skb, ep->com.qp->attr.terminate_buffer, |
1717 | skb->len); | |
b038ced7 SW |
1718 | ep->com.qp->attr.terminate_msg_len = skb->len; |
1719 | ep->com.qp->attr.is_terminate_local = 0; | |
1720 | return CPL_RET_BUF_DONE; | |
1721 | } | |
1722 | ||
1723 | static int ec_status(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) | |
1724 | { | |
1725 | struct cpl_rdma_ec_status *rep = cplhdr(skb); | |
1726 | struct iwch_ep *ep = ctx; | |
1727 | ||
33718363 | 1728 | PDBG("%s ep %p tid %u status %d\n", __func__, ep, ep->hwtid, |
b038ced7 SW |
1729 | rep->status); |
1730 | if (rep->status) { | |
1731 | struct iwch_qp_attributes attrs; | |
1732 | ||
1733 | printk(KERN_ERR MOD "%s BAD CLOSE - Aborting tid %u\n", | |
33718363 | 1734 | __func__, ep->hwtid); |
2f236735 | 1735 | stop_ep_timer(ep); |
b038ced7 SW |
1736 | attrs.next_state = IWCH_QP_STATE_ERROR; |
1737 | iwch_modify_qp(ep->com.qp->rhp, | |
1738 | ep->com.qp, IWCH_QP_ATTR_NEXT_STATE, | |
1739 | &attrs, 1); | |
1740 | abort_connection(ep, NULL, GFP_KERNEL); | |
1741 | } | |
1742 | return CPL_RET_BUF_DONE; | |
1743 | } | |
1744 | ||
1745 | static void ep_timeout(unsigned long arg) | |
1746 | { | |
1747 | struct iwch_ep *ep = (struct iwch_ep *)arg; | |
1748 | struct iwch_qp_attributes attrs; | |
1749 | unsigned long flags; | |
989a1780 | 1750 | int abort = 1; |
b038ced7 SW |
1751 | |
1752 | spin_lock_irqsave(&ep->com.lock, flags); | |
33718363 | 1753 | PDBG("%s ep %p tid %u state %d\n", __func__, ep, ep->hwtid, |
b038ced7 SW |
1754 | ep->com.state); |
1755 | switch (ep->com.state) { | |
1756 | case MPA_REQ_SENT: | |
989a1780 | 1757 | __state_set(&ep->com, ABORTING); |
b038ced7 SW |
1758 | connect_reply_upcall(ep, -ETIMEDOUT); |
1759 | break; | |
1760 | case MPA_REQ_WAIT: | |
989a1780 | 1761 | __state_set(&ep->com, ABORTING); |
b038ced7 | 1762 | break; |
42e31753 | 1763 | case CLOSING: |
b038ced7 SW |
1764 | case MORIBUND: |
1765 | if (ep->com.cm_id && ep->com.qp) { | |
1766 | attrs.next_state = IWCH_QP_STATE_ERROR; | |
1767 | iwch_modify_qp(ep->com.qp->rhp, | |
1768 | ep->com.qp, IWCH_QP_ATTR_NEXT_STATE, | |
1769 | &attrs, 1); | |
1770 | } | |
989a1780 | 1771 | __state_set(&ep->com, ABORTING); |
b038ced7 SW |
1772 | break; |
1773 | default: | |
989a1780 SW |
1774 | printk(KERN_ERR "%s unexpected state ep %p state %u\n", |
1775 | __func__, ep, ep->com.state); | |
1776 | WARN_ON(1); | |
1777 | abort = 0; | |
b038ced7 | 1778 | } |
b038ced7 | 1779 | spin_unlock_irqrestore(&ep->com.lock, flags); |
989a1780 SW |
1780 | if (abort) |
1781 | abort_connection(ep, NULL, GFP_ATOMIC); | |
b038ced7 SW |
1782 | put_ep(&ep->com); |
1783 | } | |
1784 | ||
1785 | int iwch_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) | |
1786 | { | |
1787 | int err; | |
1788 | struct iwch_ep *ep = to_ep(cm_id); | |
33718363 | 1789 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
b038ced7 SW |
1790 | |
1791 | if (state_read(&ep->com) == DEAD) { | |
1792 | put_ep(&ep->com); | |
1793 | return -ECONNRESET; | |
1794 | } | |
1795 | BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD); | |
b038ced7 SW |
1796 | if (mpa_rev == 0) |
1797 | abort_connection(ep, NULL, GFP_KERNEL); | |
1798 | else { | |
1799 | err = send_mpa_reject(ep, pdata, pdata_len); | |
7d526e6b | 1800 | err = iwch_ep_disconnect(ep, 0, GFP_KERNEL); |
b038ced7 | 1801 | } |
6e47fe43 | 1802 | put_ep(&ep->com); |
b038ced7 SW |
1803 | return 0; |
1804 | } | |
1805 | ||
1806 | int iwch_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) | |
1807 | { | |
1808 | int err; | |
1809 | struct iwch_qp_attributes attrs; | |
1810 | enum iwch_qp_attr_mask mask; | |
1811 | struct iwch_ep *ep = to_ep(cm_id); | |
1812 | struct iwch_dev *h = to_iwch_dev(cm_id->device); | |
1813 | struct iwch_qp *qp = get_qhp(h, conn_param->qpn); | |
1814 | ||
33718363 | 1815 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
6e47fe43 SW |
1816 | if (state_read(&ep->com) == DEAD) { |
1817 | err = -ECONNRESET; | |
1818 | goto err; | |
1819 | } | |
b038ced7 SW |
1820 | |
1821 | BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD); | |
1822 | BUG_ON(!qp); | |
1823 | ||
1824 | if ((conn_param->ord > qp->rhp->attr.max_rdma_read_qp_depth) || | |
1825 | (conn_param->ird > qp->rhp->attr.max_rdma_reads_per_qp)) { | |
1826 | abort_connection(ep, NULL, GFP_KERNEL); | |
6e47fe43 SW |
1827 | err = -EINVAL; |
1828 | goto err; | |
b038ced7 SW |
1829 | } |
1830 | ||
1831 | cm_id->add_ref(cm_id); | |
1832 | ep->com.cm_id = cm_id; | |
1833 | ep->com.qp = qp; | |
1834 | ||
b038ced7 SW |
1835 | ep->ird = conn_param->ird; |
1836 | ep->ord = conn_param->ord; | |
96ac7e88 SW |
1837 | |
1838 | if (peer2peer && ep->ird == 0) | |
1839 | ep->ird = 1; | |
1840 | ||
33718363 | 1841 | PDBG("%s %d ird %d ord %d\n", __func__, __LINE__, ep->ird, ep->ord); |
de3d3530 | 1842 | |
b038ced7 SW |
1843 | /* bind QP to EP and move to RTS */ |
1844 | attrs.mpa_attr = ep->mpa_attr; | |
1f71f503 | 1845 | attrs.max_ird = ep->ird; |
b038ced7 SW |
1846 | attrs.max_ord = ep->ord; |
1847 | attrs.llp_stream_handle = ep; | |
1848 | attrs.next_state = IWCH_QP_STATE_RTS; | |
1849 | ||
1850 | /* bind QP and TID with INIT_WR */ | |
1851 | mask = IWCH_QP_ATTR_NEXT_STATE | | |
1852 | IWCH_QP_ATTR_LLP_STREAM_HANDLE | | |
1853 | IWCH_QP_ATTR_MPA_ATTR | | |
1854 | IWCH_QP_ATTR_MAX_IRD | | |
1855 | IWCH_QP_ATTR_MAX_ORD; | |
1856 | ||
1857 | err = iwch_modify_qp(ep->com.qp->rhp, | |
1858 | ep->com.qp, mask, &attrs, 1); | |
de3d3530 | 1859 | if (err) |
6e47fe43 | 1860 | goto err1; |
b038ced7 | 1861 | |
f8b0dfd1 SW |
1862 | /* if needed, wait for wr_ack */ |
1863 | if (iwch_rqes_posted(qp)) { | |
1864 | wait_event(ep->com.waitq, ep->com.rpl_done); | |
1865 | err = ep->com.rpl_err; | |
1866 | if (err) | |
6e47fe43 | 1867 | goto err1; |
f8b0dfd1 SW |
1868 | } |
1869 | ||
de3d3530 SW |
1870 | err = send_mpa_reply(ep, conn_param->private_data, |
1871 | conn_param->private_data_len); | |
1872 | if (err) | |
6e47fe43 | 1873 | goto err1; |
de3d3530 | 1874 | |
de3d3530 SW |
1875 | |
1876 | state_set(&ep->com, FPDU_MODE); | |
1877 | established_upcall(ep); | |
1878 | put_ep(&ep->com); | |
1879 | return 0; | |
6e47fe43 | 1880 | err1: |
de3d3530 SW |
1881 | ep->com.cm_id = NULL; |
1882 | ep->com.qp = NULL; | |
1883 | cm_id->rem_ref(cm_id); | |
6e47fe43 | 1884 | err: |
b038ced7 SW |
1885 | put_ep(&ep->com); |
1886 | return err; | |
1887 | } | |
1888 | ||
8704e9a8 SW |
1889 | static int is_loopback_dst(struct iw_cm_id *cm_id) |
1890 | { | |
1891 | struct net_device *dev; | |
1892 | ||
1893 | dev = ip_dev_find(&init_net, cm_id->remote_addr.sin_addr.s_addr); | |
1894 | if (!dev) | |
1895 | return 0; | |
1896 | dev_put(dev); | |
1897 | return 1; | |
1898 | } | |
1899 | ||
b038ced7 SW |
1900 | int iwch_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) |
1901 | { | |
1902 | int err = 0; | |
1903 | struct iwch_dev *h = to_iwch_dev(cm_id->device); | |
1904 | struct iwch_ep *ep; | |
1905 | struct rtable *rt; | |
1906 | ||
8704e9a8 SW |
1907 | if (is_loopback_dst(cm_id)) { |
1908 | err = -ENOSYS; | |
1909 | goto out; | |
1910 | } | |
1911 | ||
b038ced7 SW |
1912 | ep = alloc_ep(sizeof(*ep), GFP_KERNEL); |
1913 | if (!ep) { | |
33718363 | 1914 | printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__); |
b038ced7 SW |
1915 | err = -ENOMEM; |
1916 | goto out; | |
1917 | } | |
1918 | init_timer(&ep->timer); | |
1919 | ep->plen = conn_param->private_data_len; | |
1920 | if (ep->plen) | |
1921 | memcpy(ep->mpa_pkt + sizeof(struct mpa_message), | |
1922 | conn_param->private_data, ep->plen); | |
1923 | ep->ird = conn_param->ird; | |
1924 | ep->ord = conn_param->ord; | |
96ac7e88 SW |
1925 | |
1926 | if (peer2peer && ep->ord == 0) | |
1927 | ep->ord = 1; | |
1928 | ||
b038ced7 SW |
1929 | ep->com.tdev = h->rdev.t3cdev_p; |
1930 | ||
1931 | cm_id->add_ref(cm_id); | |
1932 | ep->com.cm_id = cm_id; | |
1933 | ep->com.qp = get_qhp(h, conn_param->qpn); | |
1934 | BUG_ON(!ep->com.qp); | |
33718363 | 1935 | PDBG("%s qpn 0x%x qp %p cm_id %p\n", __func__, conn_param->qpn, |
b038ced7 SW |
1936 | ep->com.qp, cm_id); |
1937 | ||
1938 | /* | |
1939 | * Allocate an active TID to initiate a TCP connection. | |
1940 | */ | |
1941 | ep->atid = cxgb3_alloc_atid(h->rdev.t3cdev_p, &t3c_client, ep); | |
1942 | if (ep->atid == -1) { | |
33718363 | 1943 | printk(KERN_ERR MOD "%s - cannot alloc atid.\n", __func__); |
b038ced7 SW |
1944 | err = -ENOMEM; |
1945 | goto fail2; | |
1946 | } | |
1947 | ||
1948 | /* find a route */ | |
1949 | rt = find_route(h->rdev.t3cdev_p, | |
1950 | cm_id->local_addr.sin_addr.s_addr, | |
1951 | cm_id->remote_addr.sin_addr.s_addr, | |
1952 | cm_id->local_addr.sin_port, | |
1953 | cm_id->remote_addr.sin_port, IPTOS_LOWDELAY); | |
1954 | if (!rt) { | |
33718363 | 1955 | printk(KERN_ERR MOD "%s - cannot find route.\n", __func__); |
b038ced7 SW |
1956 | err = -EHOSTUNREACH; |
1957 | goto fail3; | |
1958 | } | |
1959 | ep->dst = &rt->u.dst; | |
1960 | ||
1961 | /* get a l2t entry */ | |
1962 | ep->l2t = t3_l2t_get(ep->com.tdev, ep->dst->neighbour, | |
1963 | ep->dst->neighbour->dev); | |
1964 | if (!ep->l2t) { | |
33718363 | 1965 | printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __func__); |
b038ced7 SW |
1966 | err = -ENOMEM; |
1967 | goto fail4; | |
1968 | } | |
1969 | ||
1970 | state_set(&ep->com, CONNECTING); | |
1971 | ep->tos = IPTOS_LOWDELAY; | |
1972 | ep->com.local_addr = cm_id->local_addr; | |
1973 | ep->com.remote_addr = cm_id->remote_addr; | |
1974 | ||
1975 | /* send connect request to rnic */ | |
1976 | err = send_connect(ep); | |
1977 | if (!err) | |
1978 | goto out; | |
1979 | ||
1980 | l2t_release(L2DATA(h->rdev.t3cdev_p), ep->l2t); | |
1981 | fail4: | |
1982 | dst_release(ep->dst); | |
1983 | fail3: | |
1984 | cxgb3_free_atid(ep->com.tdev, ep->atid); | |
1985 | fail2: | |
dc35fac9 | 1986 | cm_id->rem_ref(cm_id); |
b038ced7 SW |
1987 | put_ep(&ep->com); |
1988 | out: | |
1989 | return err; | |
1990 | } | |
1991 | ||
1992 | int iwch_create_listen(struct iw_cm_id *cm_id, int backlog) | |
1993 | { | |
1994 | int err = 0; | |
1995 | struct iwch_dev *h = to_iwch_dev(cm_id->device); | |
1996 | struct iwch_listen_ep *ep; | |
1997 | ||
1998 | ||
1999 | might_sleep(); | |
2000 | ||
2001 | ep = alloc_ep(sizeof(*ep), GFP_KERNEL); | |
2002 | if (!ep) { | |
33718363 | 2003 | printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__); |
b038ced7 SW |
2004 | err = -ENOMEM; |
2005 | goto fail1; | |
2006 | } | |
33718363 | 2007 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
2008 | ep->com.tdev = h->rdev.t3cdev_p; |
2009 | cm_id->add_ref(cm_id); | |
2010 | ep->com.cm_id = cm_id; | |
2011 | ep->backlog = backlog; | |
2012 | ep->com.local_addr = cm_id->local_addr; | |
2013 | ||
2014 | /* | |
2015 | * Allocate a server TID. | |
2016 | */ | |
2017 | ep->stid = cxgb3_alloc_stid(h->rdev.t3cdev_p, &t3c_client, ep); | |
2018 | if (ep->stid == -1) { | |
33718363 | 2019 | printk(KERN_ERR MOD "%s - cannot alloc atid.\n", __func__); |
b038ced7 SW |
2020 | err = -ENOMEM; |
2021 | goto fail2; | |
2022 | } | |
2023 | ||
2024 | state_set(&ep->com, LISTEN); | |
2025 | err = listen_start(ep); | |
2026 | if (err) | |
2027 | goto fail3; | |
2028 | ||
2029 | /* wait for pass_open_rpl */ | |
2030 | wait_event(ep->com.waitq, ep->com.rpl_done); | |
2031 | err = ep->com.rpl_err; | |
2032 | if (!err) { | |
2033 | cm_id->provider_data = ep; | |
2034 | goto out; | |
2035 | } | |
2036 | fail3: | |
2037 | cxgb3_free_stid(ep->com.tdev, ep->stid); | |
2038 | fail2: | |
1b07db70 | 2039 | cm_id->rem_ref(cm_id); |
b038ced7 SW |
2040 | put_ep(&ep->com); |
2041 | fail1: | |
2042 | out: | |
2043 | return err; | |
2044 | } | |
2045 | ||
2046 | int iwch_destroy_listen(struct iw_cm_id *cm_id) | |
2047 | { | |
2048 | int err; | |
2049 | struct iwch_listen_ep *ep = to_listen_ep(cm_id); | |
2050 | ||
33718363 | 2051 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
2052 | |
2053 | might_sleep(); | |
2054 | state_set(&ep->com, DEAD); | |
2055 | ep->com.rpl_done = 0; | |
2056 | ep->com.rpl_err = 0; | |
2057 | err = listen_stop(ep); | |
04b5d028 SW |
2058 | if (err) |
2059 | goto done; | |
b038ced7 SW |
2060 | wait_event(ep->com.waitq, ep->com.rpl_done); |
2061 | cxgb3_free_stid(ep->com.tdev, ep->stid); | |
04b5d028 | 2062 | done: |
b038ced7 SW |
2063 | err = ep->com.rpl_err; |
2064 | cm_id->rem_ref(cm_id); | |
2065 | put_ep(&ep->com); | |
2066 | return err; | |
2067 | } | |
2068 | ||
2069 | int iwch_ep_disconnect(struct iwch_ep *ep, int abrupt, gfp_t gfp) | |
2070 | { | |
2071 | int ret=0; | |
2072 | unsigned long flags; | |
2073 | int close = 0; | |
04b5d028 SW |
2074 | int fatal = 0; |
2075 | struct t3cdev *tdev; | |
2076 | struct cxio_rdev *rdev; | |
b038ced7 SW |
2077 | |
2078 | spin_lock_irqsave(&ep->com.lock, flags); | |
2079 | ||
33718363 | 2080 | PDBG("%s ep %p state %s, abrupt %d\n", __func__, ep, |
b038ced7 SW |
2081 | states[ep->com.state], abrupt); |
2082 | ||
04b5d028 SW |
2083 | tdev = (struct t3cdev *)ep->com.tdev; |
2084 | rdev = (struct cxio_rdev *)tdev->ulp; | |
2085 | if (cxio_fatal_error(rdev)) { | |
2086 | fatal = 1; | |
2087 | close_complete_upcall(ep); | |
2088 | ep->com.state = DEAD; | |
2089 | } | |
b038ced7 SW |
2090 | switch (ep->com.state) { |
2091 | case MPA_REQ_WAIT: | |
2092 | case MPA_REQ_SENT: | |
2093 | case MPA_REQ_RCVD: | |
2094 | case MPA_REP_SENT: | |
2095 | case FPDU_MODE: | |
b038ced7 | 2096 | close = 1; |
989a1780 SW |
2097 | if (abrupt) |
2098 | ep->com.state = ABORTING; | |
2099 | else { | |
2100 | ep->com.state = CLOSING; | |
2101 | start_ep_timer(ep); | |
2102 | } | |
6e47fe43 | 2103 | set_bit(CLOSE_SENT, &ep->com.flags); |
b038ced7 SW |
2104 | break; |
2105 | case CLOSING: | |
6e47fe43 SW |
2106 | if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) { |
2107 | close = 1; | |
2108 | if (abrupt) { | |
2109 | stop_ep_timer(ep); | |
2110 | ep->com.state = ABORTING; | |
2111 | } else | |
2112 | ep->com.state = MORIBUND; | |
2113 | } | |
b038ced7 SW |
2114 | break; |
2115 | case MORIBUND: | |
989a1780 SW |
2116 | case ABORTING: |
2117 | case DEAD: | |
2118 | PDBG("%s ignoring disconnect ep %p state %u\n", | |
2119 | __func__, ep, ep->com.state); | |
b038ced7 SW |
2120 | break; |
2121 | default: | |
2122 | BUG(); | |
2123 | break; | |
2124 | } | |
989a1780 | 2125 | |
b038ced7 SW |
2126 | spin_unlock_irqrestore(&ep->com.lock, flags); |
2127 | if (close) { | |
2128 | if (abrupt) | |
2129 | ret = send_abort(ep, NULL, gfp); | |
2130 | else | |
2131 | ret = send_halfclose(ep, gfp); | |
04b5d028 SW |
2132 | if (ret) |
2133 | fatal = 1; | |
b038ced7 | 2134 | } |
04b5d028 SW |
2135 | if (fatal) |
2136 | release_ep_resources(ep); | |
b038ced7 SW |
2137 | return ret; |
2138 | } | |
2139 | ||
2140 | int iwch_ep_redirect(void *ctx, struct dst_entry *old, struct dst_entry *new, | |
2141 | struct l2t_entry *l2t) | |
2142 | { | |
2143 | struct iwch_ep *ep = ctx; | |
2144 | ||
2145 | if (ep->dst != old) | |
2146 | return 0; | |
2147 | ||
33718363 | 2148 | PDBG("%s ep %p redirect to dst %p l2t %p\n", __func__, ep, new, |
b038ced7 SW |
2149 | l2t); |
2150 | dst_hold(new); | |
2151 | l2t_release(L2DATA(ep->com.tdev), ep->l2t); | |
2152 | ep->l2t = l2t; | |
2153 | dst_release(old); | |
2154 | ep->dst = new; | |
2155 | return 1; | |
2156 | } | |
2157 | ||
2158 | /* | |
2159 | * All the CM events are handled on a work queue to have a safe context. | |
2160 | */ | |
2161 | static int sched(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) | |
2162 | { | |
2163 | struct iwch_ep_common *epc = ctx; | |
2164 | ||
2165 | get_ep(epc); | |
2166 | ||
2167 | /* | |
2168 | * Save ctx and tdev in the skb->cb area. | |
2169 | */ | |
2170 | *((void **) skb->cb) = ctx; | |
2171 | *((struct t3cdev **) (skb->cb + sizeof(void *))) = tdev; | |
2172 | ||
2173 | /* | |
2174 | * Queue the skb and schedule the worker thread. | |
2175 | */ | |
2176 | skb_queue_tail(&rxq, skb); | |
2177 | queue_work(workq, &skb_work); | |
2178 | return 0; | |
2179 | } | |
2180 | ||
1ca19770 SW |
2181 | static int set_tcb_rpl(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) |
2182 | { | |
2183 | struct cpl_set_tcb_rpl *rpl = cplhdr(skb); | |
2184 | ||
2185 | if (rpl->status != CPL_ERR_NONE) { | |
2186 | printk(KERN_ERR MOD "Unexpected SET_TCB_RPL status %u " | |
2187 | "for tid %u\n", rpl->status, GET_TID(rpl)); | |
2188 | } | |
2189 | return CPL_RET_BUF_DONE; | |
2190 | } | |
2191 | ||
b038ced7 SW |
2192 | int __init iwch_cm_init(void) |
2193 | { | |
2194 | skb_queue_head_init(&rxq); | |
2195 | ||
2196 | workq = create_singlethread_workqueue("iw_cxgb3"); | |
2197 | if (!workq) | |
2198 | return -ENOMEM; | |
2199 | ||
2200 | /* | |
2201 | * All upcalls from the T3 Core go to sched() to | |
2202 | * schedule the processing on a work queue. | |
2203 | */ | |
2204 | t3c_handlers[CPL_ACT_ESTABLISH] = sched; | |
2205 | t3c_handlers[CPL_ACT_OPEN_RPL] = sched; | |
2206 | t3c_handlers[CPL_RX_DATA] = sched; | |
2207 | t3c_handlers[CPL_TX_DMA_ACK] = sched; | |
2208 | t3c_handlers[CPL_ABORT_RPL_RSS] = sched; | |
2209 | t3c_handlers[CPL_ABORT_RPL] = sched; | |
2210 | t3c_handlers[CPL_PASS_OPEN_RPL] = sched; | |
2211 | t3c_handlers[CPL_CLOSE_LISTSRV_RPL] = sched; | |
2212 | t3c_handlers[CPL_PASS_ACCEPT_REQ] = sched; | |
2213 | t3c_handlers[CPL_PASS_ESTABLISH] = sched; | |
2214 | t3c_handlers[CPL_PEER_CLOSE] = sched; | |
2215 | t3c_handlers[CPL_CLOSE_CON_RPL] = sched; | |
2216 | t3c_handlers[CPL_ABORT_REQ_RSS] = sched; | |
2217 | t3c_handlers[CPL_RDMA_TERMINATE] = sched; | |
2218 | t3c_handlers[CPL_RDMA_EC_STATUS] = sched; | |
1ca19770 | 2219 | t3c_handlers[CPL_SET_TCB_RPL] = set_tcb_rpl; |
b038ced7 SW |
2220 | |
2221 | /* | |
2222 | * These are the real handlers that are called from a | |
2223 | * work queue. | |
2224 | */ | |
2225 | work_handlers[CPL_ACT_ESTABLISH] = act_establish; | |
2226 | work_handlers[CPL_ACT_OPEN_RPL] = act_open_rpl; | |
2227 | work_handlers[CPL_RX_DATA] = rx_data; | |
2228 | work_handlers[CPL_TX_DMA_ACK] = tx_ack; | |
2229 | work_handlers[CPL_ABORT_RPL_RSS] = abort_rpl; | |
2230 | work_handlers[CPL_ABORT_RPL] = abort_rpl; | |
2231 | work_handlers[CPL_PASS_OPEN_RPL] = pass_open_rpl; | |
2232 | work_handlers[CPL_CLOSE_LISTSRV_RPL] = close_listsrv_rpl; | |
2233 | work_handlers[CPL_PASS_ACCEPT_REQ] = pass_accept_req; | |
2234 | work_handlers[CPL_PASS_ESTABLISH] = pass_establish; | |
2235 | work_handlers[CPL_PEER_CLOSE] = peer_close; | |
2236 | work_handlers[CPL_ABORT_REQ_RSS] = peer_abort; | |
2237 | work_handlers[CPL_CLOSE_CON_RPL] = close_con_rpl; | |
2238 | work_handlers[CPL_RDMA_TERMINATE] = terminate; | |
2239 | work_handlers[CPL_RDMA_EC_STATUS] = ec_status; | |
2240 | return 0; | |
2241 | } | |
2242 | ||
2243 | void __exit iwch_cm_term(void) | |
2244 | { | |
2245 | flush_workqueue(workq); | |
2246 | destroy_workqueue(workq); | |
2247 | } |