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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 | ||
b038ced7 | 105 | static struct workqueue_struct *workq; |
b038ced7 SW |
106 | |
107 | static struct sk_buff_head rxq; | |
b038ced7 SW |
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 | { | |
33718363 | 115 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 | 116 | if (timer_pending(&ep->timer)) { |
33718363 | 117 | PDBG("%s stopped / restarted timer ep %p\n", __func__, ep); |
b038ced7 SW |
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 | { | |
33718363 | 129 | PDBG("%s ep %p\n", __func__, ep); |
989a1780 SW |
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 | } | |
b038ced7 SW |
136 | del_timer_sync(&ep->timer); |
137 | put_ep(&ep->com); | |
138 | } | |
139 | ||
18199f57 | 140 | static int iwch_l2t_send(struct t3cdev *tdev, struct sk_buff *skb, struct l2t_entry *l2e) |
04b5d028 SW |
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); | |
73a203d2 | 151 | if (error < 0) |
04b5d028 SW |
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); | |
73a203d2 | 167 | if (error < 0) |
04b5d028 SW |
168 | kfree_skb(skb); |
169 | return error; | |
170 | } | |
171 | ||
b038ced7 SW |
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; | |
04b5d028 | 183 | iwch_cxgb3_ofld_send(tdev, skb); |
b038ced7 SW |
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; | |
04b5d028 | 205 | return iwch_cxgb3_ofld_send(ep->com.tdev, skb); |
b038ced7 SW |
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; | |
04b5d028 | 226 | return iwch_cxgb3_ofld_send(ep->com.tdev, skb); |
b038ced7 SW |
227 | } |
228 | ||
229 | static void set_emss(struct iwch_ep *ep, u16 opt) | |
230 | { | |
33718363 | 231 | PDBG("%s ep %p opt %u\n", __func__, ep, opt); |
b038ced7 SW |
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 | ||
2b540355 | 251 | static void __state_set(struct iwch_ep_common *epc, enum iwch_ep_state new) |
b038ced7 SW |
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); | |
33718363 | 261 | PDBG("%s - %s -> %s\n", __func__, states[epc->state], states[new]); |
b038ced7 SW |
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 | ||
dd00cc48 | 271 | epc = kzalloc(size, gfp); |
b038ced7 | 272 | if (epc) { |
b038ced7 SW |
273 | kref_init(&epc->kref); |
274 | spin_lock_init(&epc->lock); | |
275 | init_waitqueue_head(&epc->waitq); | |
276 | } | |
33718363 | 277 | PDBG("%s alloc ep %p\n", __func__, epc); |
b038ced7 SW |
278 | return epc; |
279 | } | |
280 | ||
281 | void __free_ep(struct kref *kref) | |
282 | { | |
874d8df5 SW |
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)]); | |
6e47fe43 | 287 | if (test_bit(RELEASE_RESOURCES, &ep->com.flags)) { |
874d8df5 SW |
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); | |
b038ced7 SW |
293 | } |
294 | ||
295 | static void release_ep_resources(struct iwch_ep *ep) | |
296 | { | |
33718363 | 297 | PDBG("%s ep %p tid %d\n", __func__, ep, ep->hwtid); |
6e47fe43 | 298 | set_bit(RELEASE_RESOURCES, &ep->com.flags); |
b038ced7 SW |
299 | put_ep(&ep->com); |
300 | } | |
301 | ||
b038ced7 SW |
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 | { | |
1f6a849b | 327 | if (skb && !skb_is_nonlinear(skb) && !skb_cloned(skb)) { |
b038ced7 SW |
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; | |
78fbfd8a DM |
341 | |
342 | rt = ip_route_output_ports(&init_net, NULL, peer_ip, local_ip, | |
343 | peer_port, local_port, IPPROTO_TCP, | |
344 | tos, 0); | |
b23dd4fe | 345 | if (IS_ERR(rt)) |
b038ced7 SW |
346 | return NULL; |
347 | return rt; | |
348 | } | |
349 | ||
350 | static unsigned int find_best_mtu(const struct t3c_data *d, unsigned short mtu) | |
351 | { | |
352 | int i = 0; | |
353 | ||
354 | while (i < d->nmtus - 1 && d->mtus[i + 1] <= mtu) | |
355 | ++i; | |
356 | return i; | |
357 | } | |
358 | ||
359 | static void arp_failure_discard(struct t3cdev *dev, struct sk_buff *skb) | |
360 | { | |
33718363 | 361 | PDBG("%s t3cdev %p\n", __func__, dev); |
b038ced7 SW |
362 | kfree_skb(skb); |
363 | } | |
364 | ||
365 | /* | |
366 | * Handle an ARP failure for an active open. | |
367 | */ | |
368 | static void act_open_req_arp_failure(struct t3cdev *dev, struct sk_buff *skb) | |
369 | { | |
370 | printk(KERN_ERR MOD "ARP failure duing connect\n"); | |
371 | kfree_skb(skb); | |
372 | } | |
373 | ||
374 | /* | |
375 | * Handle an ARP failure for a CPL_ABORT_REQ. Change it into a no RST variant | |
376 | * and send it along. | |
377 | */ | |
378 | static void abort_arp_failure(struct t3cdev *dev, struct sk_buff *skb) | |
379 | { | |
380 | struct cpl_abort_req *req = cplhdr(skb); | |
381 | ||
33718363 | 382 | PDBG("%s t3cdev %p\n", __func__, dev); |
b038ced7 | 383 | req->cmd = CPL_ABORT_NO_RST; |
04b5d028 | 384 | iwch_cxgb3_ofld_send(dev, skb); |
b038ced7 SW |
385 | } |
386 | ||
387 | static int send_halfclose(struct iwch_ep *ep, gfp_t gfp) | |
388 | { | |
389 | struct cpl_close_con_req *req; | |
390 | struct sk_buff *skb; | |
391 | ||
33718363 | 392 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
393 | skb = get_skb(NULL, sizeof(*req), gfp); |
394 | if (!skb) { | |
33718363 | 395 | printk(KERN_ERR MOD "%s - failed to alloc skb\n", __func__); |
b038ced7 SW |
396 | return -ENOMEM; |
397 | } | |
398 | skb->priority = CPL_PRIORITY_DATA; | |
399 | set_arp_failure_handler(skb, arp_failure_discard); | |
400 | req = (struct cpl_close_con_req *) skb_put(skb, sizeof(*req)); | |
401 | req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_CLOSE_CON)); | |
402 | req->wr.wr_lo = htonl(V_WR_TID(ep->hwtid)); | |
403 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_CLOSE_CON_REQ, ep->hwtid)); | |
04b5d028 | 404 | return iwch_l2t_send(ep->com.tdev, skb, ep->l2t); |
b038ced7 SW |
405 | } |
406 | ||
407 | static int send_abort(struct iwch_ep *ep, struct sk_buff *skb, gfp_t gfp) | |
408 | { | |
409 | struct cpl_abort_req *req; | |
410 | ||
33718363 | 411 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
412 | skb = get_skb(skb, sizeof(*req), gfp); |
413 | if (!skb) { | |
414 | printk(KERN_ERR MOD "%s - failed to alloc skb.\n", | |
33718363 | 415 | __func__); |
b038ced7 SW |
416 | return -ENOMEM; |
417 | } | |
418 | skb->priority = CPL_PRIORITY_DATA; | |
419 | set_arp_failure_handler(skb, abort_arp_failure); | |
420 | req = (struct cpl_abort_req *) skb_put(skb, sizeof(*req)); | |
421 | req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_HOST_ABORT_CON_REQ)); | |
422 | req->wr.wr_lo = htonl(V_WR_TID(ep->hwtid)); | |
423 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_ABORT_REQ, ep->hwtid)); | |
424 | req->cmd = CPL_ABORT_SEND_RST; | |
04b5d028 | 425 | return iwch_l2t_send(ep->com.tdev, skb, ep->l2t); |
b038ced7 SW |
426 | } |
427 | ||
428 | static int send_connect(struct iwch_ep *ep) | |
429 | { | |
430 | struct cpl_act_open_req *req; | |
431 | struct sk_buff *skb; | |
432 | u32 opt0h, opt0l, opt2; | |
433 | unsigned int mtu_idx; | |
434 | int wscale; | |
435 | ||
33718363 | 436 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
437 | |
438 | skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); | |
439 | if (!skb) { | |
440 | printk(KERN_ERR MOD "%s - failed to alloc skb.\n", | |
33718363 | 441 | __func__); |
b038ced7 SW |
442 | return -ENOMEM; |
443 | } | |
444 | mtu_idx = find_best_mtu(T3C_DATA(ep->com.tdev), dst_mtu(ep->dst)); | |
445 | wscale = compute_wscale(rcv_win); | |
446 | opt0h = V_NAGLE(0) | | |
447 | V_NO_CONG(nocong) | | |
448 | V_KEEP_ALIVE(1) | | |
449 | F_TCAM_BYPASS | | |
450 | V_WND_SCALE(wscale) | | |
451 | V_MSS_IDX(mtu_idx) | | |
452 | V_L2T_IDX(ep->l2t->idx) | V_TX_CHANNEL(ep->l2t->smt_idx); | |
453 | opt0l = V_TOS((ep->tos >> 2) & M_TOS) | V_RCV_BUFSIZ(rcv_win>>10); | |
bec658ff SW |
454 | opt2 = F_RX_COALESCE_VALID | V_RX_COALESCE(0) | V_FLAVORS_VALID(1) | |
455 | V_CONG_CONTROL_FLAVOR(cong_flavor); | |
b038ced7 SW |
456 | skb->priority = CPL_PRIORITY_SETUP; |
457 | set_arp_failure_handler(skb, act_open_req_arp_failure); | |
458 | ||
459 | req = (struct cpl_act_open_req *) skb_put(skb, sizeof(*req)); | |
460 | req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); | |
461 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_ACT_OPEN_REQ, ep->atid)); | |
462 | req->local_port = ep->com.local_addr.sin_port; | |
463 | req->peer_port = ep->com.remote_addr.sin_port; | |
464 | req->local_ip = ep->com.local_addr.sin_addr.s_addr; | |
465 | req->peer_ip = ep->com.remote_addr.sin_addr.s_addr; | |
466 | req->opt0h = htonl(opt0h); | |
467 | req->opt0l = htonl(opt0l); | |
468 | req->params = 0; | |
469 | req->opt2 = htonl(opt2); | |
04b5d028 | 470 | return iwch_l2t_send(ep->com.tdev, skb, ep->l2t); |
b038ced7 SW |
471 | } |
472 | ||
473 | static void send_mpa_req(struct iwch_ep *ep, struct sk_buff *skb) | |
474 | { | |
475 | int mpalen; | |
476 | struct tx_data_wr *req; | |
477 | struct mpa_message *mpa; | |
478 | int len; | |
479 | ||
33718363 | 480 | PDBG("%s ep %p pd_len %d\n", __func__, ep, ep->plen); |
b038ced7 SW |
481 | |
482 | BUG_ON(skb_cloned(skb)); | |
483 | ||
484 | mpalen = sizeof(*mpa) + ep->plen; | |
4305b541 | 485 | if (skb->data + mpalen + sizeof(*req) > skb_end_pointer(skb)) { |
b038ced7 SW |
486 | kfree_skb(skb); |
487 | skb=alloc_skb(mpalen + sizeof(*req), GFP_KERNEL); | |
488 | if (!skb) { | |
489 | connect_reply_upcall(ep, -ENOMEM); | |
490 | return; | |
491 | } | |
492 | } | |
493 | skb_trim(skb, 0); | |
494 | skb_reserve(skb, sizeof(*req)); | |
495 | skb_put(skb, mpalen); | |
496 | skb->priority = CPL_PRIORITY_DATA; | |
497 | mpa = (struct mpa_message *) skb->data; | |
498 | memset(mpa, 0, sizeof(*mpa)); | |
499 | memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key)); | |
500 | mpa->flags = (crc_enabled ? MPA_CRC : 0) | | |
501 | (markers_enabled ? MPA_MARKERS : 0); | |
502 | mpa->private_data_size = htons(ep->plen); | |
503 | mpa->revision = mpa_rev; | |
504 | ||
505 | if (ep->plen) | |
506 | memcpy(mpa->private_data, ep->mpa_pkt + sizeof(*mpa), ep->plen); | |
507 | ||
508 | /* | |
509 | * Reference the mpa skb. This ensures the data area | |
510 | * will remain in memory until the hw acks the tx. | |
511 | * Function tx_ack() will deref it. | |
512 | */ | |
513 | skb_get(skb); | |
514 | set_arp_failure_handler(skb, arp_failure_discard); | |
badff6d0 | 515 | skb_reset_transport_header(skb); |
b038ced7 SW |
516 | len = skb->len; |
517 | req = (struct tx_data_wr *) skb_push(skb, sizeof(*req)); | |
f8b0dfd1 | 518 | req->wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_TX_DATA)|F_WR_COMPL); |
b038ced7 SW |
519 | req->wr_lo = htonl(V_WR_TID(ep->hwtid)); |
520 | req->len = htonl(len); | |
521 | req->param = htonl(V_TX_PORT(ep->l2t->smt_idx) | | |
522 | V_TX_SNDBUF(snd_win>>15)); | |
de3d3530 | 523 | req->flags = htonl(F_TX_INIT); |
b038ced7 SW |
524 | req->sndseq = htonl(ep->snd_seq); |
525 | BUG_ON(ep->mpa_skb); | |
526 | ep->mpa_skb = skb; | |
04b5d028 | 527 | iwch_l2t_send(ep->com.tdev, skb, ep->l2t); |
b038ced7 SW |
528 | start_ep_timer(ep); |
529 | state_set(&ep->com, MPA_REQ_SENT); | |
530 | return; | |
531 | } | |
532 | ||
533 | static int send_mpa_reject(struct iwch_ep *ep, const void *pdata, u8 plen) | |
534 | { | |
535 | int mpalen; | |
536 | struct tx_data_wr *req; | |
537 | struct mpa_message *mpa; | |
538 | struct sk_buff *skb; | |
539 | ||
33718363 | 540 | PDBG("%s ep %p plen %d\n", __func__, ep, plen); |
b038ced7 SW |
541 | |
542 | mpalen = sizeof(*mpa) + plen; | |
543 | ||
544 | skb = get_skb(NULL, mpalen + sizeof(*req), GFP_KERNEL); | |
545 | if (!skb) { | |
33718363 | 546 | printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__); |
b038ced7 SW |
547 | return -ENOMEM; |
548 | } | |
549 | skb_reserve(skb, sizeof(*req)); | |
550 | mpa = (struct mpa_message *) skb_put(skb, mpalen); | |
551 | memset(mpa, 0, sizeof(*mpa)); | |
552 | memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); | |
553 | mpa->flags = MPA_REJECT; | |
554 | mpa->revision = mpa_rev; | |
555 | mpa->private_data_size = htons(plen); | |
556 | if (plen) | |
557 | memcpy(mpa->private_data, pdata, plen); | |
558 | ||
559 | /* | |
560 | * Reference the mpa skb again. This ensures the data area | |
561 | * will remain in memory until the hw acks the tx. | |
562 | * Function tx_ack() will deref it. | |
563 | */ | |
564 | skb_get(skb); | |
565 | skb->priority = CPL_PRIORITY_DATA; | |
566 | set_arp_failure_handler(skb, arp_failure_discard); | |
badff6d0 | 567 | skb_reset_transport_header(skb); |
b038ced7 | 568 | req = (struct tx_data_wr *) skb_push(skb, sizeof(*req)); |
f8b0dfd1 | 569 | req->wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_TX_DATA)|F_WR_COMPL); |
b038ced7 SW |
570 | req->wr_lo = htonl(V_WR_TID(ep->hwtid)); |
571 | req->len = htonl(mpalen); | |
572 | req->param = htonl(V_TX_PORT(ep->l2t->smt_idx) | | |
573 | V_TX_SNDBUF(snd_win>>15)); | |
de3d3530 | 574 | req->flags = htonl(F_TX_INIT); |
b038ced7 SW |
575 | req->sndseq = htonl(ep->snd_seq); |
576 | BUG_ON(ep->mpa_skb); | |
577 | ep->mpa_skb = skb; | |
04b5d028 | 578 | return iwch_l2t_send(ep->com.tdev, skb, ep->l2t); |
b038ced7 SW |
579 | } |
580 | ||
581 | static int send_mpa_reply(struct iwch_ep *ep, const void *pdata, u8 plen) | |
582 | { | |
583 | int mpalen; | |
584 | struct tx_data_wr *req; | |
585 | struct mpa_message *mpa; | |
586 | int len; | |
587 | struct sk_buff *skb; | |
588 | ||
33718363 | 589 | PDBG("%s ep %p plen %d\n", __func__, ep, plen); |
b038ced7 SW |
590 | |
591 | mpalen = sizeof(*mpa) + plen; | |
592 | ||
593 | skb = get_skb(NULL, mpalen + sizeof(*req), GFP_KERNEL); | |
594 | if (!skb) { | |
33718363 | 595 | printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__); |
b038ced7 SW |
596 | return -ENOMEM; |
597 | } | |
598 | skb->priority = CPL_PRIORITY_DATA; | |
599 | skb_reserve(skb, sizeof(*req)); | |
600 | mpa = (struct mpa_message *) skb_put(skb, mpalen); | |
601 | memset(mpa, 0, sizeof(*mpa)); | |
602 | memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); | |
603 | mpa->flags = (ep->mpa_attr.crc_enabled ? MPA_CRC : 0) | | |
604 | (markers_enabled ? MPA_MARKERS : 0); | |
605 | mpa->revision = mpa_rev; | |
606 | mpa->private_data_size = htons(plen); | |
607 | if (plen) | |
608 | memcpy(mpa->private_data, pdata, plen); | |
609 | ||
610 | /* | |
611 | * Reference the mpa skb. This ensures the data area | |
612 | * will remain in memory until the hw acks the tx. | |
613 | * Function tx_ack() will deref it. | |
614 | */ | |
615 | skb_get(skb); | |
616 | set_arp_failure_handler(skb, arp_failure_discard); | |
badff6d0 | 617 | skb_reset_transport_header(skb); |
b038ced7 SW |
618 | len = skb->len; |
619 | req = (struct tx_data_wr *) skb_push(skb, sizeof(*req)); | |
f8b0dfd1 | 620 | req->wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_TX_DATA)|F_WR_COMPL); |
b038ced7 SW |
621 | req->wr_lo = htonl(V_WR_TID(ep->hwtid)); |
622 | req->len = htonl(len); | |
623 | req->param = htonl(V_TX_PORT(ep->l2t->smt_idx) | | |
624 | V_TX_SNDBUF(snd_win>>15)); | |
de3d3530 | 625 | req->flags = htonl(F_TX_INIT); |
b038ced7 SW |
626 | req->sndseq = htonl(ep->snd_seq); |
627 | ep->mpa_skb = skb; | |
628 | state_set(&ep->com, MPA_REP_SENT); | |
04b5d028 | 629 | return iwch_l2t_send(ep->com.tdev, skb, ep->l2t); |
b038ced7 SW |
630 | } |
631 | ||
632 | static int act_establish(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) | |
633 | { | |
634 | struct iwch_ep *ep = ctx; | |
635 | struct cpl_act_establish *req = cplhdr(skb); | |
636 | unsigned int tid = GET_TID(req); | |
637 | ||
33718363 | 638 | PDBG("%s ep %p tid %d\n", __func__, ep, tid); |
b038ced7 SW |
639 | |
640 | dst_confirm(ep->dst); | |
641 | ||
642 | /* setup the hwtid for this connection */ | |
643 | ep->hwtid = tid; | |
644 | cxgb3_insert_tid(ep->com.tdev, &t3c_client, ep, tid); | |
645 | ||
646 | ep->snd_seq = ntohl(req->snd_isn); | |
de3d3530 | 647 | ep->rcv_seq = ntohl(req->rcv_isn); |
b038ced7 SW |
648 | |
649 | set_emss(ep, ntohs(req->tcp_opt)); | |
650 | ||
651 | /* dealloc the atid */ | |
652 | cxgb3_free_atid(ep->com.tdev, ep->atid); | |
653 | ||
654 | /* start MPA negotiation */ | |
655 | send_mpa_req(ep, skb); | |
656 | ||
657 | return 0; | |
658 | } | |
659 | ||
660 | static void abort_connection(struct iwch_ep *ep, struct sk_buff *skb, gfp_t gfp) | |
661 | { | |
662 | PDBG("%s ep %p\n", __FILE__, ep); | |
663 | state_set(&ep->com, ABORTING); | |
664 | send_abort(ep, skb, gfp); | |
665 | } | |
666 | ||
667 | static void close_complete_upcall(struct iwch_ep *ep) | |
668 | { | |
669 | struct iw_cm_event event; | |
670 | ||
33718363 | 671 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
672 | memset(&event, 0, sizeof(event)); |
673 | event.event = IW_CM_EVENT_CLOSE; | |
674 | if (ep->com.cm_id) { | |
675 | PDBG("close complete delivered ep %p cm_id %p tid %d\n", | |
676 | ep, ep->com.cm_id, ep->hwtid); | |
677 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); | |
678 | ep->com.cm_id->rem_ref(ep->com.cm_id); | |
679 | ep->com.cm_id = NULL; | |
680 | ep->com.qp = NULL; | |
681 | } | |
682 | } | |
683 | ||
684 | static void peer_close_upcall(struct iwch_ep *ep) | |
685 | { | |
686 | struct iw_cm_event event; | |
687 | ||
33718363 | 688 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
689 | memset(&event, 0, sizeof(event)); |
690 | event.event = IW_CM_EVENT_DISCONNECT; | |
691 | if (ep->com.cm_id) { | |
692 | PDBG("peer close delivered ep %p cm_id %p tid %d\n", | |
693 | ep, ep->com.cm_id, ep->hwtid); | |
694 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); | |
695 | } | |
696 | } | |
697 | ||
698 | static void peer_abort_upcall(struct iwch_ep *ep) | |
699 | { | |
700 | struct iw_cm_event event; | |
701 | ||
33718363 | 702 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
703 | memset(&event, 0, sizeof(event)); |
704 | event.event = IW_CM_EVENT_CLOSE; | |
705 | event.status = -ECONNRESET; | |
706 | if (ep->com.cm_id) { | |
707 | PDBG("abort delivered ep %p cm_id %p tid %d\n", ep, | |
708 | ep->com.cm_id, ep->hwtid); | |
709 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); | |
710 | ep->com.cm_id->rem_ref(ep->com.cm_id); | |
711 | ep->com.cm_id = NULL; | |
712 | ep->com.qp = NULL; | |
713 | } | |
714 | } | |
715 | ||
716 | static void connect_reply_upcall(struct iwch_ep *ep, int status) | |
717 | { | |
718 | struct iw_cm_event event; | |
719 | ||
33718363 | 720 | PDBG("%s ep %p status %d\n", __func__, ep, status); |
b038ced7 SW |
721 | memset(&event, 0, sizeof(event)); |
722 | event.event = IW_CM_EVENT_CONNECT_REPLY; | |
723 | event.status = status; | |
724 | event.local_addr = ep->com.local_addr; | |
725 | event.remote_addr = ep->com.remote_addr; | |
726 | ||
727 | if ((status == 0) || (status == -ECONNREFUSED)) { | |
728 | event.private_data_len = ep->plen; | |
729 | event.private_data = ep->mpa_pkt + sizeof(struct mpa_message); | |
730 | } | |
731 | if (ep->com.cm_id) { | |
33718363 | 732 | PDBG("%s ep %p tid %d status %d\n", __func__, ep, |
b038ced7 SW |
733 | ep->hwtid, status); |
734 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); | |
735 | } | |
736 | if (status < 0) { | |
737 | ep->com.cm_id->rem_ref(ep->com.cm_id); | |
738 | ep->com.cm_id = NULL; | |
739 | ep->com.qp = NULL; | |
740 | } | |
741 | } | |
742 | ||
743 | static void connect_request_upcall(struct iwch_ep *ep) | |
744 | { | |
745 | struct iw_cm_event event; | |
746 | ||
33718363 | 747 | PDBG("%s ep %p tid %d\n", __func__, ep, ep->hwtid); |
b038ced7 SW |
748 | memset(&event, 0, sizeof(event)); |
749 | event.event = IW_CM_EVENT_CONNECT_REQUEST; | |
750 | event.local_addr = ep->com.local_addr; | |
751 | event.remote_addr = ep->com.remote_addr; | |
752 | event.private_data_len = ep->plen; | |
753 | event.private_data = ep->mpa_pkt + sizeof(struct mpa_message); | |
754 | event.provider_data = ep; | |
6e47fe43 SW |
755 | if (state_read(&ep->parent_ep->com) != DEAD) { |
756 | get_ep(&ep->com); | |
b038ced7 SW |
757 | ep->parent_ep->com.cm_id->event_handler( |
758 | ep->parent_ep->com.cm_id, | |
759 | &event); | |
6e47fe43 | 760 | } |
b038ced7 SW |
761 | put_ep(&ep->parent_ep->com); |
762 | ep->parent_ep = NULL; | |
763 | } | |
764 | ||
765 | static void established_upcall(struct iwch_ep *ep) | |
766 | { | |
767 | struct iw_cm_event event; | |
768 | ||
33718363 | 769 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
770 | memset(&event, 0, sizeof(event)); |
771 | event.event = IW_CM_EVENT_ESTABLISHED; | |
772 | if (ep->com.cm_id) { | |
33718363 | 773 | PDBG("%s ep %p tid %d\n", __func__, ep, ep->hwtid); |
b038ced7 SW |
774 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); |
775 | } | |
776 | } | |
777 | ||
778 | static int update_rx_credits(struct iwch_ep *ep, u32 credits) | |
779 | { | |
780 | struct cpl_rx_data_ack *req; | |
781 | struct sk_buff *skb; | |
782 | ||
33718363 | 783 | PDBG("%s ep %p credits %u\n", __func__, ep, credits); |
b038ced7 SW |
784 | skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); |
785 | if (!skb) { | |
786 | printk(KERN_ERR MOD "update_rx_credits - cannot alloc skb!\n"); | |
787 | return 0; | |
788 | } | |
789 | ||
790 | req = (struct cpl_rx_data_ack *) skb_put(skb, sizeof(*req)); | |
791 | req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); | |
792 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_RX_DATA_ACK, ep->hwtid)); | |
793 | req->credit_dack = htonl(V_RX_CREDITS(credits) | V_RX_FORCE_ACK(1)); | |
794 | skb->priority = CPL_PRIORITY_ACK; | |
04b5d028 | 795 | iwch_cxgb3_ofld_send(ep->com.tdev, skb); |
b038ced7 SW |
796 | return credits; |
797 | } | |
798 | ||
799 | static void process_mpa_reply(struct iwch_ep *ep, struct sk_buff *skb) | |
800 | { | |
801 | struct mpa_message *mpa; | |
802 | u16 plen; | |
803 | struct iwch_qp_attributes attrs; | |
804 | enum iwch_qp_attr_mask mask; | |
805 | int err; | |
806 | ||
33718363 | 807 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
808 | |
809 | /* | |
810 | * Stop mpa timer. If it expired, then the state has | |
811 | * changed and we bail since ep_timeout already aborted | |
812 | * the connection. | |
813 | */ | |
814 | stop_ep_timer(ep); | |
815 | if (state_read(&ep->com) != MPA_REQ_SENT) | |
816 | return; | |
817 | ||
818 | /* | |
819 | * If we get more than the supported amount of private data | |
820 | * then we must fail this connection. | |
821 | */ | |
822 | if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) { | |
823 | err = -EINVAL; | |
824 | goto err; | |
825 | } | |
826 | ||
827 | /* | |
828 | * copy the new data into our accumulation buffer. | |
829 | */ | |
d626f62b ACM |
830 | skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]), |
831 | skb->len); | |
b038ced7 SW |
832 | ep->mpa_pkt_len += skb->len; |
833 | ||
834 | /* | |
835 | * if we don't even have the mpa message, then bail. | |
836 | */ | |
837 | if (ep->mpa_pkt_len < sizeof(*mpa)) | |
838 | return; | |
839 | mpa = (struct mpa_message *) ep->mpa_pkt; | |
840 | ||
841 | /* Validate MPA header. */ | |
842 | if (mpa->revision != mpa_rev) { | |
843 | err = -EPROTO; | |
844 | goto err; | |
845 | } | |
846 | if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) { | |
847 | err = -EPROTO; | |
848 | goto err; | |
849 | } | |
850 | ||
851 | plen = ntohs(mpa->private_data_size); | |
852 | ||
853 | /* | |
854 | * Fail if there's too much private data. | |
855 | */ | |
856 | if (plen > MPA_MAX_PRIVATE_DATA) { | |
857 | err = -EPROTO; | |
858 | goto err; | |
859 | } | |
860 | ||
861 | /* | |
862 | * If plen does not account for pkt size | |
863 | */ | |
864 | if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { | |
865 | err = -EPROTO; | |
866 | goto err; | |
867 | } | |
868 | ||
869 | ep->plen = (u8) plen; | |
870 | ||
871 | /* | |
872 | * If we don't have all the pdata yet, then bail. | |
873 | * We'll continue process when more data arrives. | |
874 | */ | |
875 | if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) | |
876 | return; | |
877 | ||
878 | if (mpa->flags & MPA_REJECT) { | |
879 | err = -ECONNREFUSED; | |
880 | goto err; | |
881 | } | |
882 | ||
883 | /* | |
884 | * If we get here we have accumulated the entire mpa | |
885 | * start reply message including private data. And | |
886 | * the MPA header is valid. | |
887 | */ | |
888 | state_set(&ep->com, FPDU_MODE); | |
f8b0dfd1 | 889 | ep->mpa_attr.initiator = 1; |
b038ced7 SW |
890 | ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; |
891 | ep->mpa_attr.recv_marker_enabled = markers_enabled; | |
892 | ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; | |
893 | ep->mpa_attr.version = mpa_rev; | |
894 | PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, " | |
33718363 | 895 | "xmit_marker_enabled=%d, version=%d\n", __func__, |
b038ced7 SW |
896 | ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, |
897 | ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version); | |
898 | ||
899 | attrs.mpa_attr = ep->mpa_attr; | |
900 | attrs.max_ird = ep->ird; | |
901 | attrs.max_ord = ep->ord; | |
902 | attrs.llp_stream_handle = ep; | |
903 | attrs.next_state = IWCH_QP_STATE_RTS; | |
904 | ||
905 | mask = IWCH_QP_ATTR_NEXT_STATE | | |
906 | IWCH_QP_ATTR_LLP_STREAM_HANDLE | IWCH_QP_ATTR_MPA_ATTR | | |
907 | IWCH_QP_ATTR_MAX_IRD | IWCH_QP_ATTR_MAX_ORD; | |
908 | ||
909 | /* bind QP and TID with INIT_WR */ | |
910 | err = iwch_modify_qp(ep->com.qp->rhp, | |
911 | ep->com.qp, mask, &attrs, 1); | |
f8b0dfd1 SW |
912 | if (err) |
913 | goto err; | |
914 | ||
915 | if (peer2peer && iwch_rqes_posted(ep->com.qp) == 0) { | |
916 | iwch_post_zb_read(ep->com.qp); | |
917 | } | |
918 | ||
919 | goto out; | |
b038ced7 SW |
920 | err: |
921 | abort_connection(ep, skb, GFP_KERNEL); | |
922 | out: | |
923 | connect_reply_upcall(ep, err); | |
924 | return; | |
925 | } | |
926 | ||
927 | static void process_mpa_request(struct iwch_ep *ep, struct sk_buff *skb) | |
928 | { | |
929 | struct mpa_message *mpa; | |
930 | u16 plen; | |
931 | ||
33718363 | 932 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
933 | |
934 | /* | |
935 | * Stop mpa timer. If it expired, then the state has | |
936 | * changed and we bail since ep_timeout already aborted | |
937 | * the connection. | |
938 | */ | |
939 | stop_ep_timer(ep); | |
940 | if (state_read(&ep->com) != MPA_REQ_WAIT) | |
941 | return; | |
942 | ||
943 | /* | |
944 | * If we get more than the supported amount of private data | |
945 | * then we must fail this connection. | |
946 | */ | |
947 | if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) { | |
948 | abort_connection(ep, skb, GFP_KERNEL); | |
949 | return; | |
950 | } | |
951 | ||
33718363 | 952 | PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__); |
b038ced7 SW |
953 | |
954 | /* | |
955 | * Copy the new data into our accumulation buffer. | |
956 | */ | |
d626f62b ACM |
957 | skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]), |
958 | skb->len); | |
b038ced7 SW |
959 | ep->mpa_pkt_len += skb->len; |
960 | ||
961 | /* | |
962 | * If we don't even have the mpa message, then bail. | |
963 | * We'll continue process when more data arrives. | |
964 | */ | |
965 | if (ep->mpa_pkt_len < sizeof(*mpa)) | |
966 | return; | |
33718363 | 967 | PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__); |
b038ced7 SW |
968 | mpa = (struct mpa_message *) ep->mpa_pkt; |
969 | ||
970 | /* | |
971 | * Validate MPA Header. | |
972 | */ | |
973 | if (mpa->revision != mpa_rev) { | |
974 | abort_connection(ep, skb, GFP_KERNEL); | |
975 | return; | |
976 | } | |
977 | ||
978 | if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key))) { | |
979 | abort_connection(ep, skb, GFP_KERNEL); | |
980 | return; | |
981 | } | |
982 | ||
983 | plen = ntohs(mpa->private_data_size); | |
984 | ||
985 | /* | |
986 | * Fail if there's too much private data. | |
987 | */ | |
988 | if (plen > MPA_MAX_PRIVATE_DATA) { | |
989 | abort_connection(ep, skb, GFP_KERNEL); | |
990 | return; | |
991 | } | |
992 | ||
993 | /* | |
994 | * If plen does not account for pkt size | |
995 | */ | |
996 | if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { | |
997 | abort_connection(ep, skb, GFP_KERNEL); | |
998 | return; | |
999 | } | |
1000 | ep->plen = (u8) plen; | |
1001 | ||
1002 | /* | |
1003 | * If we don't have all the pdata yet, then bail. | |
1004 | */ | |
1005 | if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) | |
1006 | return; | |
1007 | ||
1008 | /* | |
1009 | * If we get here we have accumulated the entire mpa | |
1010 | * start reply message including private data. | |
1011 | */ | |
f8b0dfd1 | 1012 | ep->mpa_attr.initiator = 0; |
b038ced7 SW |
1013 | ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; |
1014 | ep->mpa_attr.recv_marker_enabled = markers_enabled; | |
1015 | ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; | |
1016 | ep->mpa_attr.version = mpa_rev; | |
1017 | PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, " | |
33718363 | 1018 | "xmit_marker_enabled=%d, version=%d\n", __func__, |
b038ced7 SW |
1019 | ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, |
1020 | ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version); | |
1021 | ||
1022 | state_set(&ep->com, MPA_REQ_RCVD); | |
1023 | ||
1024 | /* drive upcall */ | |
1025 | connect_request_upcall(ep); | |
1026 | return; | |
1027 | } | |
1028 | ||
1029 | static int rx_data(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) | |
1030 | { | |
1031 | struct iwch_ep *ep = ctx; | |
1032 | struct cpl_rx_data *hdr = cplhdr(skb); | |
1033 | unsigned int dlen = ntohs(hdr->len); | |
1034 | ||
33718363 | 1035 | PDBG("%s ep %p dlen %u\n", __func__, ep, dlen); |
b038ced7 SW |
1036 | |
1037 | skb_pull(skb, sizeof(*hdr)); | |
1038 | skb_trim(skb, dlen); | |
1039 | ||
de3d3530 SW |
1040 | ep->rcv_seq += dlen; |
1041 | BUG_ON(ep->rcv_seq != (ntohl(hdr->seq) + dlen)); | |
1042 | ||
b038ced7 SW |
1043 | switch (state_read(&ep->com)) { |
1044 | case MPA_REQ_SENT: | |
1045 | process_mpa_reply(ep, skb); | |
1046 | break; | |
1047 | case MPA_REQ_WAIT: | |
1048 | process_mpa_request(ep, skb); | |
1049 | break; | |
1050 | case MPA_REP_SENT: | |
1051 | break; | |
1052 | default: | |
1053 | printk(KERN_ERR MOD "%s Unexpected streaming data." | |
1054 | " ep %p state %d tid %d\n", | |
33718363 | 1055 | __func__, ep, state_read(&ep->com), ep->hwtid); |
b038ced7 SW |
1056 | |
1057 | /* | |
1058 | * The ep will timeout and inform the ULP of the failure. | |
1059 | * See ep_timeout(). | |
1060 | */ | |
1061 | break; | |
1062 | } | |
1063 | ||
1064 | /* update RX credits */ | |
1065 | update_rx_credits(ep, dlen); | |
1066 | ||
1067 | return CPL_RET_BUF_DONE; | |
1068 | } | |
1069 | ||
1070 | /* | |
1071 | * Upcall from the adapter indicating data has been transmitted. | |
1072 | * For us its just the single MPA request or reply. We can now free | |
1073 | * the skb holding the mpa message. | |
1074 | */ | |
1075 | static int tx_ack(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) | |
1076 | { | |
1077 | struct iwch_ep *ep = ctx; | |
1078 | struct cpl_wr_ack *hdr = cplhdr(skb); | |
1079 | unsigned int credits = ntohs(hdr->credits); | |
b038ced7 | 1080 | |
33718363 | 1081 | PDBG("%s ep %p credits %u\n", __func__, ep, credits); |
b038ced7 | 1082 | |
f8b0dfd1 | 1083 | if (credits == 0) { |
ca7cf94f JP |
1084 | PDBG("%s 0 credit ack ep %p state %u\n", |
1085 | __func__, ep, state_read(&ep->com)); | |
b038ced7 | 1086 | return CPL_RET_BUF_DONE; |
f8b0dfd1 SW |
1087 | } |
1088 | ||
b038ced7 | 1089 | BUG_ON(credits != 1); |
b038ced7 | 1090 | dst_confirm(ep->dst); |
f8b0dfd1 SW |
1091 | if (!ep->mpa_skb) { |
1092 | PDBG("%s rdma_init wr_ack ep %p state %u\n", | |
1093 | __func__, ep, state_read(&ep->com)); | |
1094 | if (ep->mpa_attr.initiator) { | |
1095 | PDBG("%s initiator ep %p state %u\n", | |
1096 | __func__, ep, state_read(&ep->com)); | |
1097 | if (peer2peer) | |
1098 | iwch_post_zb_read(ep->com.qp); | |
1099 | } else { | |
1100 | PDBG("%s responder ep %p state %u\n", | |
1101 | __func__, ep, state_read(&ep->com)); | |
1102 | ep->com.rpl_done = 1; | |
1103 | wake_up(&ep->com.waitq); | |
1104 | } | |
1105 | } else { | |
1106 | PDBG("%s lsm ack ep %p state %u freeing skb\n", | |
1107 | __func__, ep, state_read(&ep->com)); | |
1108 | kfree_skb(ep->mpa_skb); | |
1109 | ep->mpa_skb = NULL; | |
b038ced7 SW |
1110 | } |
1111 | return CPL_RET_BUF_DONE; | |
1112 | } | |
1113 | ||
1114 | static int abort_rpl(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) | |
1115 | { | |
1116 | struct iwch_ep *ep = ctx; | |
989a1780 SW |
1117 | unsigned long flags; |
1118 | int release = 0; | |
b038ced7 | 1119 | |
33718363 | 1120 | PDBG("%s ep %p\n", __func__, ep); |
989a1780 | 1121 | BUG_ON(!ep); |
b038ced7 | 1122 | |
aff9e39d SW |
1123 | /* |
1124 | * We get 2 abort replies from the HW. The first one must | |
1125 | * be ignored except for scribbling that we need one more. | |
1126 | */ | |
6e47fe43 | 1127 | if (!test_and_set_bit(ABORT_REQ_IN_PROGRESS, &ep->com.flags)) { |
aff9e39d SW |
1128 | return CPL_RET_BUF_DONE; |
1129 | } | |
1130 | ||
989a1780 SW |
1131 | spin_lock_irqsave(&ep->com.lock, flags); |
1132 | switch (ep->com.state) { | |
1133 | case ABORTING: | |
1134 | close_complete_upcall(ep); | |
1135 | __state_set(&ep->com, DEAD); | |
1136 | release = 1; | |
1137 | break; | |
1138 | default: | |
1139 | printk(KERN_ERR "%s ep %p state %d\n", | |
1140 | __func__, ep, ep->com.state); | |
1141 | break; | |
1142 | } | |
1143 | spin_unlock_irqrestore(&ep->com.lock, flags); | |
1144 | ||
1145 | if (release) | |
1146 | release_ep_resources(ep); | |
b038ced7 SW |
1147 | return CPL_RET_BUF_DONE; |
1148 | } | |
1149 | ||
96d0e493 SW |
1150 | /* |
1151 | * Return whether a failed active open has allocated a TID | |
1152 | */ | |
1153 | static inline int act_open_has_tid(int status) | |
1154 | { | |
1155 | return status != CPL_ERR_TCAM_FULL && status != CPL_ERR_CONN_EXIST && | |
1156 | status != CPL_ERR_ARP_MISS; | |
1157 | } | |
1158 | ||
b038ced7 SW |
1159 | static int act_open_rpl(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) |
1160 | { | |
1161 | struct iwch_ep *ep = ctx; | |
1162 | struct cpl_act_open_rpl *rpl = cplhdr(skb); | |
1163 | ||
33718363 | 1164 | PDBG("%s ep %p status %u errno %d\n", __func__, ep, rpl->status, |
b038ced7 SW |
1165 | status2errno(rpl->status)); |
1166 | connect_reply_upcall(ep, status2errno(rpl->status)); | |
1167 | state_set(&ep->com, DEAD); | |
8176d297 | 1168 | if (ep->com.tdev->type != T3A && act_open_has_tid(rpl->status)) |
b038ced7 SW |
1169 | release_tid(ep->com.tdev, GET_TID(rpl), NULL); |
1170 | cxgb3_free_atid(ep->com.tdev, ep->atid); | |
1171 | dst_release(ep->dst); | |
1172 | l2t_release(L2DATA(ep->com.tdev), ep->l2t); | |
1173 | put_ep(&ep->com); | |
1174 | return CPL_RET_BUF_DONE; | |
1175 | } | |
1176 | ||
1177 | static int listen_start(struct iwch_listen_ep *ep) | |
1178 | { | |
1179 | struct sk_buff *skb; | |
1180 | struct cpl_pass_open_req *req; | |
1181 | ||
33718363 | 1182 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
1183 | skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); |
1184 | if (!skb) { | |
1185 | printk(KERN_ERR MOD "t3c_listen_start failed to alloc skb!\n"); | |
1186 | return -ENOMEM; | |
1187 | } | |
1188 | ||
1189 | req = (struct cpl_pass_open_req *) skb_put(skb, sizeof(*req)); | |
1190 | req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); | |
1191 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_PASS_OPEN_REQ, ep->stid)); | |
1192 | req->local_port = ep->com.local_addr.sin_port; | |
1193 | req->local_ip = ep->com.local_addr.sin_addr.s_addr; | |
1194 | req->peer_port = 0; | |
1195 | req->peer_ip = 0; | |
1196 | req->peer_netmask = 0; | |
1197 | req->opt0h = htonl(F_DELACK | F_TCAM_BYPASS); | |
1198 | req->opt0l = htonl(V_RCV_BUFSIZ(rcv_win>>10)); | |
1199 | req->opt1 = htonl(V_CONN_POLICY(CPL_CONN_POLICY_ASK)); | |
1200 | ||
1201 | skb->priority = 1; | |
04b5d028 | 1202 | return iwch_cxgb3_ofld_send(ep->com.tdev, skb); |
b038ced7 SW |
1203 | } |
1204 | ||
1205 | static int pass_open_rpl(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) | |
1206 | { | |
1207 | struct iwch_listen_ep *ep = ctx; | |
1208 | struct cpl_pass_open_rpl *rpl = cplhdr(skb); | |
1209 | ||
33718363 | 1210 | PDBG("%s ep %p status %d error %d\n", __func__, ep, |
b038ced7 SW |
1211 | rpl->status, status2errno(rpl->status)); |
1212 | ep->com.rpl_err = status2errno(rpl->status); | |
1213 | ep->com.rpl_done = 1; | |
1214 | wake_up(&ep->com.waitq); | |
1215 | ||
1216 | return CPL_RET_BUF_DONE; | |
1217 | } | |
1218 | ||
1219 | static int listen_stop(struct iwch_listen_ep *ep) | |
1220 | { | |
1221 | struct sk_buff *skb; | |
1222 | struct cpl_close_listserv_req *req; | |
1223 | ||
33718363 | 1224 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
1225 | skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); |
1226 | if (!skb) { | |
33718363 | 1227 | printk(KERN_ERR MOD "%s - failed to alloc skb\n", __func__); |
b038ced7 SW |
1228 | return -ENOMEM; |
1229 | } | |
1230 | req = (struct cpl_close_listserv_req *) skb_put(skb, sizeof(*req)); | |
1231 | req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); | |
60be4b59 | 1232 | req->cpu_idx = 0; |
b038ced7 SW |
1233 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_CLOSE_LISTSRV_REQ, ep->stid)); |
1234 | skb->priority = 1; | |
04b5d028 | 1235 | return iwch_cxgb3_ofld_send(ep->com.tdev, skb); |
b038ced7 SW |
1236 | } |
1237 | ||
1238 | static int close_listsrv_rpl(struct t3cdev *tdev, struct sk_buff *skb, | |
1239 | void *ctx) | |
1240 | { | |
1241 | struct iwch_listen_ep *ep = ctx; | |
1242 | struct cpl_close_listserv_rpl *rpl = cplhdr(skb); | |
1243 | ||
33718363 | 1244 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
1245 | ep->com.rpl_err = status2errno(rpl->status); |
1246 | ep->com.rpl_done = 1; | |
1247 | wake_up(&ep->com.waitq); | |
1248 | return CPL_RET_BUF_DONE; | |
1249 | } | |
1250 | ||
1251 | static void accept_cr(struct iwch_ep *ep, __be32 peer_ip, struct sk_buff *skb) | |
1252 | { | |
1253 | struct cpl_pass_accept_rpl *rpl; | |
1254 | unsigned int mtu_idx; | |
1255 | u32 opt0h, opt0l, opt2; | |
1256 | int wscale; | |
1257 | ||
33718363 | 1258 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
1259 | BUG_ON(skb_cloned(skb)); |
1260 | skb_trim(skb, sizeof(*rpl)); | |
1261 | skb_get(skb); | |
1262 | mtu_idx = find_best_mtu(T3C_DATA(ep->com.tdev), dst_mtu(ep->dst)); | |
1263 | wscale = compute_wscale(rcv_win); | |
1264 | opt0h = V_NAGLE(0) | | |
1265 | V_NO_CONG(nocong) | | |
1266 | V_KEEP_ALIVE(1) | | |
1267 | F_TCAM_BYPASS | | |
1268 | V_WND_SCALE(wscale) | | |
1269 | V_MSS_IDX(mtu_idx) | | |
1270 | V_L2T_IDX(ep->l2t->idx) | V_TX_CHANNEL(ep->l2t->smt_idx); | |
1271 | opt0l = V_TOS((ep->tos >> 2) & M_TOS) | V_RCV_BUFSIZ(rcv_win>>10); | |
bec658ff SW |
1272 | opt2 = F_RX_COALESCE_VALID | V_RX_COALESCE(0) | V_FLAVORS_VALID(1) | |
1273 | V_CONG_CONTROL_FLAVOR(cong_flavor); | |
b038ced7 SW |
1274 | |
1275 | rpl = cplhdr(skb); | |
1276 | rpl->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); | |
1277 | OPCODE_TID(rpl) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL, ep->hwtid)); | |
1278 | rpl->peer_ip = peer_ip; | |
1279 | rpl->opt0h = htonl(opt0h); | |
1280 | rpl->opt0l_status = htonl(opt0l | CPL_PASS_OPEN_ACCEPT); | |
1281 | rpl->opt2 = htonl(opt2); | |
1282 | rpl->rsvd = rpl->opt2; /* workaround for HW bug */ | |
1283 | skb->priority = CPL_PRIORITY_SETUP; | |
04b5d028 | 1284 | iwch_l2t_send(ep->com.tdev, skb, ep->l2t); |
b038ced7 SW |
1285 | |
1286 | return; | |
1287 | } | |
1288 | ||
1289 | static void reject_cr(struct t3cdev *tdev, u32 hwtid, __be32 peer_ip, | |
1290 | struct sk_buff *skb) | |
1291 | { | |
33718363 | 1292 | PDBG("%s t3cdev %p tid %u peer_ip %x\n", __func__, tdev, hwtid, |
b038ced7 SW |
1293 | peer_ip); |
1294 | BUG_ON(skb_cloned(skb)); | |
1295 | skb_trim(skb, sizeof(struct cpl_tid_release)); | |
1296 | skb_get(skb); | |
1297 | ||
8176d297 | 1298 | if (tdev->type != T3A) |
b038ced7 SW |
1299 | release_tid(tdev, hwtid, skb); |
1300 | else { | |
1301 | struct cpl_pass_accept_rpl *rpl; | |
1302 | ||
1303 | rpl = cplhdr(skb); | |
1304 | skb->priority = CPL_PRIORITY_SETUP; | |
1305 | rpl->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); | |
1306 | OPCODE_TID(rpl) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL, | |
1307 | hwtid)); | |
1308 | rpl->peer_ip = peer_ip; | |
1309 | rpl->opt0h = htonl(F_TCAM_BYPASS); | |
1310 | rpl->opt0l_status = htonl(CPL_PASS_OPEN_REJECT); | |
1311 | rpl->opt2 = 0; | |
1312 | rpl->rsvd = rpl->opt2; | |
04b5d028 | 1313 | iwch_cxgb3_ofld_send(tdev, skb); |
b038ced7 SW |
1314 | } |
1315 | } | |
1316 | ||
1317 | static int pass_accept_req(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) | |
1318 | { | |
1319 | struct iwch_ep *child_ep, *parent_ep = ctx; | |
1320 | struct cpl_pass_accept_req *req = cplhdr(skb); | |
1321 | unsigned int hwtid = GET_TID(req); | |
1322 | struct dst_entry *dst; | |
1323 | struct l2t_entry *l2t; | |
1324 | struct rtable *rt; | |
1325 | struct iff_mac tim; | |
1326 | ||
33718363 | 1327 | PDBG("%s parent ep %p tid %u\n", __func__, parent_ep, hwtid); |
b038ced7 SW |
1328 | |
1329 | if (state_read(&parent_ep->com) != LISTEN) { | |
1330 | printk(KERN_ERR "%s - listening ep not in LISTEN\n", | |
33718363 | 1331 | __func__); |
b038ced7 SW |
1332 | goto reject; |
1333 | } | |
1334 | ||
1335 | /* | |
1336 | * Find the netdev for this connection request. | |
1337 | */ | |
1338 | tim.mac_addr = req->dst_mac; | |
1339 | tim.vlan_tag = ntohs(req->vlan_tag); | |
1340 | if (tdev->ctl(tdev, GET_IFF_FROM_MAC, &tim) < 0 || !tim.dev) { | |
eacc4d6a HS |
1341 | printk(KERN_ERR "%s bad dst mac %pM\n", |
1342 | __func__, req->dst_mac); | |
b038ced7 SW |
1343 | goto reject; |
1344 | } | |
1345 | ||
1346 | /* Find output route */ | |
1347 | rt = find_route(tdev, | |
1348 | req->local_ip, | |
1349 | req->peer_ip, | |
1350 | req->local_port, | |
1351 | req->peer_port, G_PASS_OPEN_TOS(ntohl(req->tos_tid))); | |
1352 | if (!rt) { | |
1353 | printk(KERN_ERR MOD "%s - failed to find dst entry!\n", | |
33718363 | 1354 | __func__); |
b038ced7 SW |
1355 | goto reject; |
1356 | } | |
d8d1f30b | 1357 | dst = &rt->dst; |
b038ced7 SW |
1358 | l2t = t3_l2t_get(tdev, dst->neighbour, dst->neighbour->dev); |
1359 | if (!l2t) { | |
1360 | printk(KERN_ERR MOD "%s - failed to allocate l2t entry!\n", | |
33718363 | 1361 | __func__); |
b038ced7 SW |
1362 | dst_release(dst); |
1363 | goto reject; | |
1364 | } | |
1365 | child_ep = alloc_ep(sizeof(*child_ep), GFP_KERNEL); | |
1366 | if (!child_ep) { | |
1367 | printk(KERN_ERR MOD "%s - failed to allocate ep entry!\n", | |
33718363 | 1368 | __func__); |
b038ced7 SW |
1369 | l2t_release(L2DATA(tdev), l2t); |
1370 | dst_release(dst); | |
1371 | goto reject; | |
1372 | } | |
1373 | state_set(&child_ep->com, CONNECTING); | |
1374 | child_ep->com.tdev = tdev; | |
1375 | child_ep->com.cm_id = NULL; | |
1376 | child_ep->com.local_addr.sin_family = PF_INET; | |
1377 | child_ep->com.local_addr.sin_port = req->local_port; | |
1378 | child_ep->com.local_addr.sin_addr.s_addr = req->local_ip; | |
1379 | child_ep->com.remote_addr.sin_family = PF_INET; | |
1380 | child_ep->com.remote_addr.sin_port = req->peer_port; | |
1381 | child_ep->com.remote_addr.sin_addr.s_addr = req->peer_ip; | |
1382 | get_ep(&parent_ep->com); | |
1383 | child_ep->parent_ep = parent_ep; | |
1384 | child_ep->tos = G_PASS_OPEN_TOS(ntohl(req->tos_tid)); | |
1385 | child_ep->l2t = l2t; | |
1386 | child_ep->dst = dst; | |
1387 | child_ep->hwtid = hwtid; | |
1388 | init_timer(&child_ep->timer); | |
1389 | cxgb3_insert_tid(tdev, &t3c_client, child_ep, hwtid); | |
1390 | accept_cr(child_ep, req->peer_ip, skb); | |
1391 | goto out; | |
1392 | reject: | |
1393 | reject_cr(tdev, hwtid, req->peer_ip, skb); | |
1394 | out: | |
1395 | return CPL_RET_BUF_DONE; | |
1396 | } | |
1397 | ||
1398 | static int pass_establish(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) | |
1399 | { | |
1400 | struct iwch_ep *ep = ctx; | |
1401 | struct cpl_pass_establish *req = cplhdr(skb); | |
1402 | ||
33718363 | 1403 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 | 1404 | ep->snd_seq = ntohl(req->snd_isn); |
de3d3530 | 1405 | ep->rcv_seq = ntohl(req->rcv_isn); |
b038ced7 SW |
1406 | |
1407 | set_emss(ep, ntohs(req->tcp_opt)); | |
1408 | ||
1409 | dst_confirm(ep->dst); | |
1410 | state_set(&ep->com, MPA_REQ_WAIT); | |
1411 | start_ep_timer(ep); | |
1412 | ||
1413 | return CPL_RET_BUF_DONE; | |
1414 | } | |
1415 | ||
1416 | static int peer_close(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) | |
1417 | { | |
1418 | struct iwch_ep *ep = ctx; | |
1419 | struct iwch_qp_attributes attrs; | |
1420 | unsigned long flags; | |
1421 | int disconnect = 1; | |
1422 | int release = 0; | |
1423 | ||
33718363 | 1424 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
1425 | dst_confirm(ep->dst); |
1426 | ||
1427 | spin_lock_irqsave(&ep->com.lock, flags); | |
1428 | switch (ep->com.state) { | |
1429 | case MPA_REQ_WAIT: | |
1430 | __state_set(&ep->com, CLOSING); | |
1431 | break; | |
1432 | case MPA_REQ_SENT: | |
1433 | __state_set(&ep->com, CLOSING); | |
1434 | connect_reply_upcall(ep, -ECONNRESET); | |
1435 | break; | |
1436 | case MPA_REQ_RCVD: | |
1437 | ||
1438 | /* | |
1439 | * We're gonna mark this puppy DEAD, but keep | |
1440 | * the reference on it until the ULP accepts or | |
a52bf98d SW |
1441 | * rejects the CR. Also wake up anyone waiting |
1442 | * in rdma connection migration (see iwch_accept_cr()). | |
b038ced7 SW |
1443 | */ |
1444 | __state_set(&ep->com, CLOSING); | |
a52bf98d SW |
1445 | ep->com.rpl_done = 1; |
1446 | ep->com.rpl_err = -ECONNRESET; | |
1447 | PDBG("waking up ep %p\n", ep); | |
1448 | wake_up(&ep->com.waitq); | |
b038ced7 SW |
1449 | break; |
1450 | case MPA_REP_SENT: | |
1451 | __state_set(&ep->com, CLOSING); | |
1452 | ep->com.rpl_done = 1; | |
1453 | ep->com.rpl_err = -ECONNRESET; | |
1454 | PDBG("waking up ep %p\n", ep); | |
1455 | wake_up(&ep->com.waitq); | |
1456 | break; | |
1457 | case FPDU_MODE: | |
42e31753 | 1458 | start_ep_timer(ep); |
b038ced7 SW |
1459 | __state_set(&ep->com, CLOSING); |
1460 | attrs.next_state = IWCH_QP_STATE_CLOSING; | |
1461 | iwch_modify_qp(ep->com.qp->rhp, ep->com.qp, | |
1462 | IWCH_QP_ATTR_NEXT_STATE, &attrs, 1); | |
1463 | peer_close_upcall(ep); | |
1464 | break; | |
1465 | case ABORTING: | |
1466 | disconnect = 0; | |
1467 | break; | |
1468 | case CLOSING: | |
b038ced7 SW |
1469 | __state_set(&ep->com, MORIBUND); |
1470 | disconnect = 0; | |
1471 | break; | |
1472 | case MORIBUND: | |
1473 | stop_ep_timer(ep); | |
1474 | if (ep->com.cm_id && ep->com.qp) { | |
1475 | attrs.next_state = IWCH_QP_STATE_IDLE; | |
1476 | iwch_modify_qp(ep->com.qp->rhp, ep->com.qp, | |
1477 | IWCH_QP_ATTR_NEXT_STATE, &attrs, 1); | |
1478 | } | |
1479 | close_complete_upcall(ep); | |
1480 | __state_set(&ep->com, DEAD); | |
1481 | release = 1; | |
1482 | disconnect = 0; | |
1483 | break; | |
1484 | case DEAD: | |
1485 | disconnect = 0; | |
1486 | break; | |
1487 | default: | |
1488 | BUG_ON(1); | |
1489 | } | |
1490 | spin_unlock_irqrestore(&ep->com.lock, flags); | |
1491 | if (disconnect) | |
1492 | iwch_ep_disconnect(ep, 0, GFP_KERNEL); | |
1493 | if (release) | |
1494 | release_ep_resources(ep); | |
1495 | return CPL_RET_BUF_DONE; | |
1496 | } | |
1497 | ||
1498 | /* | |
1499 | * Returns whether an ABORT_REQ_RSS message is a negative advice. | |
1500 | */ | |
2b540355 | 1501 | static int is_neg_adv_abort(unsigned int status) |
b038ced7 SW |
1502 | { |
1503 | return status == CPL_ERR_RTX_NEG_ADVICE || | |
1504 | status == CPL_ERR_PERSIST_NEG_ADVICE; | |
1505 | } | |
1506 | ||
1507 | static int peer_abort(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) | |
1508 | { | |
1509 | struct cpl_abort_req_rss *req = cplhdr(skb); | |
1510 | struct iwch_ep *ep = ctx; | |
1511 | struct cpl_abort_rpl *rpl; | |
1512 | struct sk_buff *rpl_skb; | |
1513 | struct iwch_qp_attributes attrs; | |
1514 | int ret; | |
989a1780 SW |
1515 | int release = 0; |
1516 | unsigned long flags; | |
b038ced7 | 1517 | |
1580367e | 1518 | if (is_neg_adv_abort(req->status)) { |
33718363 | 1519 | PDBG("%s neg_adv_abort ep %p tid %d\n", __func__, ep, |
1580367e SW |
1520 | ep->hwtid); |
1521 | t3_l2t_send_event(ep->com.tdev, ep->l2t); | |
1522 | return CPL_RET_BUF_DONE; | |
1523 | } | |
1524 | ||
aff9e39d SW |
1525 | /* |
1526 | * We get 2 peer aborts from the HW. The first one must | |
1527 | * be ignored except for scribbling that we need one more. | |
1528 | */ | |
6e47fe43 | 1529 | if (!test_and_set_bit(PEER_ABORT_IN_PROGRESS, &ep->com.flags)) { |
aff9e39d SW |
1530 | return CPL_RET_BUF_DONE; |
1531 | } | |
1532 | ||
989a1780 SW |
1533 | spin_lock_irqsave(&ep->com.lock, flags); |
1534 | PDBG("%s ep %p state %u\n", __func__, ep, ep->com.state); | |
1535 | switch (ep->com.state) { | |
b038ced7 SW |
1536 | case CONNECTING: |
1537 | break; | |
1538 | case MPA_REQ_WAIT: | |
adf376b3 | 1539 | stop_ep_timer(ep); |
b038ced7 SW |
1540 | break; |
1541 | case MPA_REQ_SENT: | |
adf376b3 | 1542 | stop_ep_timer(ep); |
b038ced7 SW |
1543 | connect_reply_upcall(ep, -ECONNRESET); |
1544 | break; | |
1545 | case MPA_REP_SENT: | |
1546 | ep->com.rpl_done = 1; | |
1547 | ep->com.rpl_err = -ECONNRESET; | |
1548 | PDBG("waking up ep %p\n", ep); | |
1549 | wake_up(&ep->com.waitq); | |
1550 | break; | |
1551 | case MPA_REQ_RCVD: | |
1552 | ||
1553 | /* | |
1554 | * We're gonna mark this puppy DEAD, but keep | |
1555 | * the reference on it until the ULP accepts or | |
a52bf98d SW |
1556 | * rejects the CR. Also wake up anyone waiting |
1557 | * in rdma connection migration (see iwch_accept_cr()). | |
b038ced7 | 1558 | */ |
a52bf98d SW |
1559 | ep->com.rpl_done = 1; |
1560 | ep->com.rpl_err = -ECONNRESET; | |
1561 | PDBG("waking up ep %p\n", ep); | |
1562 | wake_up(&ep->com.waitq); | |
b038ced7 SW |
1563 | break; |
1564 | case MORIBUND: | |
42e31753 | 1565 | case CLOSING: |
b038ced7 | 1566 | stop_ep_timer(ep); |
42e31753 | 1567 | /*FALLTHROUGH*/ |
b038ced7 | 1568 | case FPDU_MODE: |
b038ced7 SW |
1569 | if (ep->com.cm_id && ep->com.qp) { |
1570 | attrs.next_state = IWCH_QP_STATE_ERROR; | |
1571 | ret = iwch_modify_qp(ep->com.qp->rhp, | |
1572 | ep->com.qp, IWCH_QP_ATTR_NEXT_STATE, | |
1573 | &attrs, 1); | |
1574 | if (ret) | |
1575 | printk(KERN_ERR MOD | |
1576 | "%s - qp <- error failed!\n", | |
33718363 | 1577 | __func__); |
b038ced7 SW |
1578 | } |
1579 | peer_abort_upcall(ep); | |
1580 | break; | |
1581 | case ABORTING: | |
1582 | break; | |
1583 | case DEAD: | |
33718363 | 1584 | PDBG("%s PEER_ABORT IN DEAD STATE!!!!\n", __func__); |
989a1780 | 1585 | spin_unlock_irqrestore(&ep->com.lock, flags); |
b038ced7 SW |
1586 | return CPL_RET_BUF_DONE; |
1587 | default: | |
1588 | BUG_ON(1); | |
1589 | break; | |
1590 | } | |
1591 | dst_confirm(ep->dst); | |
989a1780 SW |
1592 | if (ep->com.state != ABORTING) { |
1593 | __state_set(&ep->com, DEAD); | |
1594 | release = 1; | |
1595 | } | |
1596 | spin_unlock_irqrestore(&ep->com.lock, flags); | |
b038ced7 SW |
1597 | |
1598 | rpl_skb = get_skb(skb, sizeof(*rpl), GFP_KERNEL); | |
1599 | if (!rpl_skb) { | |
1600 | printk(KERN_ERR MOD "%s - cannot allocate skb!\n", | |
33718363 | 1601 | __func__); |
989a1780 SW |
1602 | release = 1; |
1603 | goto out; | |
b038ced7 SW |
1604 | } |
1605 | rpl_skb->priority = CPL_PRIORITY_DATA; | |
1606 | rpl = (struct cpl_abort_rpl *) skb_put(rpl_skb, sizeof(*rpl)); | |
1607 | rpl->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_HOST_ABORT_CON_RPL)); | |
1608 | rpl->wr.wr_lo = htonl(V_WR_TID(ep->hwtid)); | |
1609 | OPCODE_TID(rpl) = htonl(MK_OPCODE_TID(CPL_ABORT_RPL, ep->hwtid)); | |
1610 | rpl->cmd = CPL_ABORT_NO_RST; | |
04b5d028 | 1611 | iwch_cxgb3_ofld_send(ep->com.tdev, rpl_skb); |
989a1780 SW |
1612 | out: |
1613 | if (release) | |
b038ced7 | 1614 | release_ep_resources(ep); |
b038ced7 SW |
1615 | return CPL_RET_BUF_DONE; |
1616 | } | |
1617 | ||
1618 | static int close_con_rpl(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) | |
1619 | { | |
1620 | struct iwch_ep *ep = ctx; | |
1621 | struct iwch_qp_attributes attrs; | |
1622 | unsigned long flags; | |
1623 | int release = 0; | |
1624 | ||
33718363 | 1625 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
1626 | BUG_ON(!ep); |
1627 | ||
1628 | /* The cm_id may be null if we failed to connect */ | |
1629 | spin_lock_irqsave(&ep->com.lock, flags); | |
1630 | switch (ep->com.state) { | |
1631 | case CLOSING: | |
b038ced7 SW |
1632 | __state_set(&ep->com, MORIBUND); |
1633 | break; | |
1634 | case MORIBUND: | |
1635 | stop_ep_timer(ep); | |
1636 | if ((ep->com.cm_id) && (ep->com.qp)) { | |
1637 | attrs.next_state = IWCH_QP_STATE_IDLE; | |
1638 | iwch_modify_qp(ep->com.qp->rhp, | |
1639 | ep->com.qp, | |
1640 | IWCH_QP_ATTR_NEXT_STATE, | |
1641 | &attrs, 1); | |
1642 | } | |
1643 | close_complete_upcall(ep); | |
1644 | __state_set(&ep->com, DEAD); | |
1645 | release = 1; | |
1646 | break; | |
42e31753 | 1647 | case ABORTING: |
b038ced7 | 1648 | case DEAD: |
c4d49776 | 1649 | break; |
b038ced7 SW |
1650 | default: |
1651 | BUG_ON(1); | |
1652 | break; | |
1653 | } | |
1654 | spin_unlock_irqrestore(&ep->com.lock, flags); | |
1655 | if (release) | |
1656 | release_ep_resources(ep); | |
1657 | return CPL_RET_BUF_DONE; | |
1658 | } | |
1659 | ||
1660 | /* | |
1661 | * T3A does 3 things when a TERM is received: | |
1662 | * 1) send up a CPL_RDMA_TERMINATE message with the TERM packet | |
1663 | * 2) generate an async event on the QP with the TERMINATE opcode | |
1664 | * 3) post a TERMINATE opcde cqe into the associated CQ. | |
1665 | * | |
1666 | * For (1), we save the message in the qp for later consumer consumption. | |
1667 | * For (2), we move the QP into TERMINATE, post a QP event and disconnect. | |
1668 | * For (3), we toss the CQE in cxio_poll_cq(). | |
1669 | * | |
1670 | * terminate() handles case (1)... | |
1671 | */ | |
1672 | static int terminate(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) | |
1673 | { | |
1674 | struct iwch_ep *ep = ctx; | |
1675 | ||
42fb61f0 SW |
1676 | if (state_read(&ep->com) != FPDU_MODE) |
1677 | return CPL_RET_BUF_DONE; | |
1678 | ||
33718363 | 1679 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 | 1680 | skb_pull(skb, sizeof(struct cpl_rdma_terminate)); |
33718363 | 1681 | PDBG("%s saving %d bytes of term msg\n", __func__, skb->len); |
d626f62b ACM |
1682 | skb_copy_from_linear_data(skb, ep->com.qp->attr.terminate_buffer, |
1683 | skb->len); | |
b038ced7 SW |
1684 | ep->com.qp->attr.terminate_msg_len = skb->len; |
1685 | ep->com.qp->attr.is_terminate_local = 0; | |
1686 | return CPL_RET_BUF_DONE; | |
1687 | } | |
1688 | ||
1689 | static int ec_status(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) | |
1690 | { | |
1691 | struct cpl_rdma_ec_status *rep = cplhdr(skb); | |
1692 | struct iwch_ep *ep = ctx; | |
1693 | ||
33718363 | 1694 | PDBG("%s ep %p tid %u status %d\n", __func__, ep, ep->hwtid, |
b038ced7 SW |
1695 | rep->status); |
1696 | if (rep->status) { | |
1697 | struct iwch_qp_attributes attrs; | |
1698 | ||
1699 | printk(KERN_ERR MOD "%s BAD CLOSE - Aborting tid %u\n", | |
33718363 | 1700 | __func__, ep->hwtid); |
2f236735 | 1701 | stop_ep_timer(ep); |
b038ced7 SW |
1702 | attrs.next_state = IWCH_QP_STATE_ERROR; |
1703 | iwch_modify_qp(ep->com.qp->rhp, | |
1704 | ep->com.qp, IWCH_QP_ATTR_NEXT_STATE, | |
1705 | &attrs, 1); | |
1706 | abort_connection(ep, NULL, GFP_KERNEL); | |
1707 | } | |
1708 | return CPL_RET_BUF_DONE; | |
1709 | } | |
1710 | ||
1711 | static void ep_timeout(unsigned long arg) | |
1712 | { | |
1713 | struct iwch_ep *ep = (struct iwch_ep *)arg; | |
1714 | struct iwch_qp_attributes attrs; | |
1715 | unsigned long flags; | |
989a1780 | 1716 | int abort = 1; |
b038ced7 SW |
1717 | |
1718 | spin_lock_irqsave(&ep->com.lock, flags); | |
33718363 | 1719 | PDBG("%s ep %p tid %u state %d\n", __func__, ep, ep->hwtid, |
b038ced7 SW |
1720 | ep->com.state); |
1721 | switch (ep->com.state) { | |
1722 | case MPA_REQ_SENT: | |
989a1780 | 1723 | __state_set(&ep->com, ABORTING); |
b038ced7 SW |
1724 | connect_reply_upcall(ep, -ETIMEDOUT); |
1725 | break; | |
1726 | case MPA_REQ_WAIT: | |
989a1780 | 1727 | __state_set(&ep->com, ABORTING); |
b038ced7 | 1728 | break; |
42e31753 | 1729 | case CLOSING: |
b038ced7 SW |
1730 | case MORIBUND: |
1731 | if (ep->com.cm_id && ep->com.qp) { | |
1732 | attrs.next_state = IWCH_QP_STATE_ERROR; | |
1733 | iwch_modify_qp(ep->com.qp->rhp, | |
1734 | ep->com.qp, IWCH_QP_ATTR_NEXT_STATE, | |
1735 | &attrs, 1); | |
1736 | } | |
989a1780 | 1737 | __state_set(&ep->com, ABORTING); |
b038ced7 SW |
1738 | break; |
1739 | default: | |
989a1780 SW |
1740 | printk(KERN_ERR "%s unexpected state ep %p state %u\n", |
1741 | __func__, ep, ep->com.state); | |
1742 | WARN_ON(1); | |
1743 | abort = 0; | |
b038ced7 | 1744 | } |
b038ced7 | 1745 | spin_unlock_irqrestore(&ep->com.lock, flags); |
989a1780 SW |
1746 | if (abort) |
1747 | abort_connection(ep, NULL, GFP_ATOMIC); | |
b038ced7 SW |
1748 | put_ep(&ep->com); |
1749 | } | |
1750 | ||
1751 | int iwch_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) | |
1752 | { | |
1753 | int err; | |
1754 | struct iwch_ep *ep = to_ep(cm_id); | |
33718363 | 1755 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
b038ced7 SW |
1756 | |
1757 | if (state_read(&ep->com) == DEAD) { | |
1758 | put_ep(&ep->com); | |
1759 | return -ECONNRESET; | |
1760 | } | |
1761 | BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD); | |
b038ced7 SW |
1762 | if (mpa_rev == 0) |
1763 | abort_connection(ep, NULL, GFP_KERNEL); | |
1764 | else { | |
1765 | err = send_mpa_reject(ep, pdata, pdata_len); | |
7d526e6b | 1766 | err = iwch_ep_disconnect(ep, 0, GFP_KERNEL); |
b038ced7 | 1767 | } |
6e47fe43 | 1768 | put_ep(&ep->com); |
b038ced7 SW |
1769 | return 0; |
1770 | } | |
1771 | ||
1772 | int iwch_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) | |
1773 | { | |
1774 | int err; | |
1775 | struct iwch_qp_attributes attrs; | |
1776 | enum iwch_qp_attr_mask mask; | |
1777 | struct iwch_ep *ep = to_ep(cm_id); | |
1778 | struct iwch_dev *h = to_iwch_dev(cm_id->device); | |
1779 | struct iwch_qp *qp = get_qhp(h, conn_param->qpn); | |
1780 | ||
33718363 | 1781 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
6e47fe43 SW |
1782 | if (state_read(&ep->com) == DEAD) { |
1783 | err = -ECONNRESET; | |
1784 | goto err; | |
1785 | } | |
b038ced7 SW |
1786 | |
1787 | BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD); | |
1788 | BUG_ON(!qp); | |
1789 | ||
1790 | if ((conn_param->ord > qp->rhp->attr.max_rdma_read_qp_depth) || | |
1791 | (conn_param->ird > qp->rhp->attr.max_rdma_reads_per_qp)) { | |
1792 | abort_connection(ep, NULL, GFP_KERNEL); | |
6e47fe43 SW |
1793 | err = -EINVAL; |
1794 | goto err; | |
b038ced7 SW |
1795 | } |
1796 | ||
1797 | cm_id->add_ref(cm_id); | |
1798 | ep->com.cm_id = cm_id; | |
1799 | ep->com.qp = qp; | |
1800 | ||
b038ced7 SW |
1801 | ep->ird = conn_param->ird; |
1802 | ep->ord = conn_param->ord; | |
96ac7e88 SW |
1803 | |
1804 | if (peer2peer && ep->ird == 0) | |
1805 | ep->ird = 1; | |
1806 | ||
33718363 | 1807 | PDBG("%s %d ird %d ord %d\n", __func__, __LINE__, ep->ird, ep->ord); |
de3d3530 | 1808 | |
b038ced7 SW |
1809 | /* bind QP to EP and move to RTS */ |
1810 | attrs.mpa_attr = ep->mpa_attr; | |
1f71f503 | 1811 | attrs.max_ird = ep->ird; |
b038ced7 SW |
1812 | attrs.max_ord = ep->ord; |
1813 | attrs.llp_stream_handle = ep; | |
1814 | attrs.next_state = IWCH_QP_STATE_RTS; | |
1815 | ||
1816 | /* bind QP and TID with INIT_WR */ | |
1817 | mask = IWCH_QP_ATTR_NEXT_STATE | | |
1818 | IWCH_QP_ATTR_LLP_STREAM_HANDLE | | |
1819 | IWCH_QP_ATTR_MPA_ATTR | | |
1820 | IWCH_QP_ATTR_MAX_IRD | | |
1821 | IWCH_QP_ATTR_MAX_ORD; | |
1822 | ||
1823 | err = iwch_modify_qp(ep->com.qp->rhp, | |
1824 | ep->com.qp, mask, &attrs, 1); | |
de3d3530 | 1825 | if (err) |
6e47fe43 | 1826 | goto err1; |
b038ced7 | 1827 | |
f8b0dfd1 SW |
1828 | /* if needed, wait for wr_ack */ |
1829 | if (iwch_rqes_posted(qp)) { | |
1830 | wait_event(ep->com.waitq, ep->com.rpl_done); | |
1831 | err = ep->com.rpl_err; | |
1832 | if (err) | |
6e47fe43 | 1833 | goto err1; |
f8b0dfd1 SW |
1834 | } |
1835 | ||
de3d3530 SW |
1836 | err = send_mpa_reply(ep, conn_param->private_data, |
1837 | conn_param->private_data_len); | |
1838 | if (err) | |
6e47fe43 | 1839 | goto err1; |
de3d3530 | 1840 | |
de3d3530 SW |
1841 | |
1842 | state_set(&ep->com, FPDU_MODE); | |
1843 | established_upcall(ep); | |
1844 | put_ep(&ep->com); | |
1845 | return 0; | |
6e47fe43 | 1846 | err1: |
de3d3530 SW |
1847 | ep->com.cm_id = NULL; |
1848 | ep->com.qp = NULL; | |
1849 | cm_id->rem_ref(cm_id); | |
6e47fe43 | 1850 | err: |
b038ced7 SW |
1851 | put_ep(&ep->com); |
1852 | return err; | |
1853 | } | |
1854 | ||
8704e9a8 SW |
1855 | static int is_loopback_dst(struct iw_cm_id *cm_id) |
1856 | { | |
1857 | struct net_device *dev; | |
1858 | ||
1859 | dev = ip_dev_find(&init_net, cm_id->remote_addr.sin_addr.s_addr); | |
1860 | if (!dev) | |
1861 | return 0; | |
1862 | dev_put(dev); | |
1863 | return 1; | |
1864 | } | |
1865 | ||
b038ced7 SW |
1866 | int iwch_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) |
1867 | { | |
1868 | int err = 0; | |
1869 | struct iwch_dev *h = to_iwch_dev(cm_id->device); | |
1870 | struct iwch_ep *ep; | |
1871 | struct rtable *rt; | |
1872 | ||
8704e9a8 SW |
1873 | if (is_loopback_dst(cm_id)) { |
1874 | err = -ENOSYS; | |
1875 | goto out; | |
1876 | } | |
1877 | ||
b038ced7 SW |
1878 | ep = alloc_ep(sizeof(*ep), GFP_KERNEL); |
1879 | if (!ep) { | |
33718363 | 1880 | printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__); |
b038ced7 SW |
1881 | err = -ENOMEM; |
1882 | goto out; | |
1883 | } | |
1884 | init_timer(&ep->timer); | |
1885 | ep->plen = conn_param->private_data_len; | |
1886 | if (ep->plen) | |
1887 | memcpy(ep->mpa_pkt + sizeof(struct mpa_message), | |
1888 | conn_param->private_data, ep->plen); | |
1889 | ep->ird = conn_param->ird; | |
1890 | ep->ord = conn_param->ord; | |
96ac7e88 SW |
1891 | |
1892 | if (peer2peer && ep->ord == 0) | |
1893 | ep->ord = 1; | |
1894 | ||
b038ced7 SW |
1895 | ep->com.tdev = h->rdev.t3cdev_p; |
1896 | ||
1897 | cm_id->add_ref(cm_id); | |
1898 | ep->com.cm_id = cm_id; | |
1899 | ep->com.qp = get_qhp(h, conn_param->qpn); | |
1900 | BUG_ON(!ep->com.qp); | |
33718363 | 1901 | PDBG("%s qpn 0x%x qp %p cm_id %p\n", __func__, conn_param->qpn, |
b038ced7 SW |
1902 | ep->com.qp, cm_id); |
1903 | ||
1904 | /* | |
1905 | * Allocate an active TID to initiate a TCP connection. | |
1906 | */ | |
1907 | ep->atid = cxgb3_alloc_atid(h->rdev.t3cdev_p, &t3c_client, ep); | |
1908 | if (ep->atid == -1) { | |
33718363 | 1909 | printk(KERN_ERR MOD "%s - cannot alloc atid.\n", __func__); |
b038ced7 SW |
1910 | err = -ENOMEM; |
1911 | goto fail2; | |
1912 | } | |
1913 | ||
1914 | /* find a route */ | |
1915 | rt = find_route(h->rdev.t3cdev_p, | |
1916 | cm_id->local_addr.sin_addr.s_addr, | |
1917 | cm_id->remote_addr.sin_addr.s_addr, | |
1918 | cm_id->local_addr.sin_port, | |
1919 | cm_id->remote_addr.sin_port, IPTOS_LOWDELAY); | |
1920 | if (!rt) { | |
33718363 | 1921 | printk(KERN_ERR MOD "%s - cannot find route.\n", __func__); |
b038ced7 SW |
1922 | err = -EHOSTUNREACH; |
1923 | goto fail3; | |
1924 | } | |
d8d1f30b | 1925 | ep->dst = &rt->dst; |
b038ced7 SW |
1926 | |
1927 | /* get a l2t entry */ | |
1928 | ep->l2t = t3_l2t_get(ep->com.tdev, ep->dst->neighbour, | |
1929 | ep->dst->neighbour->dev); | |
1930 | if (!ep->l2t) { | |
33718363 | 1931 | printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __func__); |
b038ced7 SW |
1932 | err = -ENOMEM; |
1933 | goto fail4; | |
1934 | } | |
1935 | ||
1936 | state_set(&ep->com, CONNECTING); | |
1937 | ep->tos = IPTOS_LOWDELAY; | |
1938 | ep->com.local_addr = cm_id->local_addr; | |
1939 | ep->com.remote_addr = cm_id->remote_addr; | |
1940 | ||
1941 | /* send connect request to rnic */ | |
1942 | err = send_connect(ep); | |
1943 | if (!err) | |
1944 | goto out; | |
1945 | ||
1946 | l2t_release(L2DATA(h->rdev.t3cdev_p), ep->l2t); | |
1947 | fail4: | |
1948 | dst_release(ep->dst); | |
1949 | fail3: | |
1950 | cxgb3_free_atid(ep->com.tdev, ep->atid); | |
1951 | fail2: | |
dc35fac9 | 1952 | cm_id->rem_ref(cm_id); |
b038ced7 SW |
1953 | put_ep(&ep->com); |
1954 | out: | |
1955 | return err; | |
1956 | } | |
1957 | ||
1958 | int iwch_create_listen(struct iw_cm_id *cm_id, int backlog) | |
1959 | { | |
1960 | int err = 0; | |
1961 | struct iwch_dev *h = to_iwch_dev(cm_id->device); | |
1962 | struct iwch_listen_ep *ep; | |
1963 | ||
1964 | ||
1965 | might_sleep(); | |
1966 | ||
1967 | ep = alloc_ep(sizeof(*ep), GFP_KERNEL); | |
1968 | if (!ep) { | |
33718363 | 1969 | printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__); |
b038ced7 SW |
1970 | err = -ENOMEM; |
1971 | goto fail1; | |
1972 | } | |
33718363 | 1973 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
1974 | ep->com.tdev = h->rdev.t3cdev_p; |
1975 | cm_id->add_ref(cm_id); | |
1976 | ep->com.cm_id = cm_id; | |
1977 | ep->backlog = backlog; | |
1978 | ep->com.local_addr = cm_id->local_addr; | |
1979 | ||
1980 | /* | |
1981 | * Allocate a server TID. | |
1982 | */ | |
1983 | ep->stid = cxgb3_alloc_stid(h->rdev.t3cdev_p, &t3c_client, ep); | |
1984 | if (ep->stid == -1) { | |
33718363 | 1985 | printk(KERN_ERR MOD "%s - cannot alloc atid.\n", __func__); |
b038ced7 SW |
1986 | err = -ENOMEM; |
1987 | goto fail2; | |
1988 | } | |
1989 | ||
1990 | state_set(&ep->com, LISTEN); | |
1991 | err = listen_start(ep); | |
1992 | if (err) | |
1993 | goto fail3; | |
1994 | ||
1995 | /* wait for pass_open_rpl */ | |
1996 | wait_event(ep->com.waitq, ep->com.rpl_done); | |
1997 | err = ep->com.rpl_err; | |
1998 | if (!err) { | |
1999 | cm_id->provider_data = ep; | |
2000 | goto out; | |
2001 | } | |
2002 | fail3: | |
2003 | cxgb3_free_stid(ep->com.tdev, ep->stid); | |
2004 | fail2: | |
1b07db70 | 2005 | cm_id->rem_ref(cm_id); |
b038ced7 SW |
2006 | put_ep(&ep->com); |
2007 | fail1: | |
2008 | out: | |
2009 | return err; | |
2010 | } | |
2011 | ||
2012 | int iwch_destroy_listen(struct iw_cm_id *cm_id) | |
2013 | { | |
2014 | int err; | |
2015 | struct iwch_listen_ep *ep = to_listen_ep(cm_id); | |
2016 | ||
33718363 | 2017 | PDBG("%s ep %p\n", __func__, ep); |
b038ced7 SW |
2018 | |
2019 | might_sleep(); | |
2020 | state_set(&ep->com, DEAD); | |
2021 | ep->com.rpl_done = 0; | |
2022 | ep->com.rpl_err = 0; | |
2023 | err = listen_stop(ep); | |
04b5d028 SW |
2024 | if (err) |
2025 | goto done; | |
b038ced7 SW |
2026 | wait_event(ep->com.waitq, ep->com.rpl_done); |
2027 | cxgb3_free_stid(ep->com.tdev, ep->stid); | |
04b5d028 | 2028 | done: |
b038ced7 SW |
2029 | err = ep->com.rpl_err; |
2030 | cm_id->rem_ref(cm_id); | |
2031 | put_ep(&ep->com); | |
2032 | return err; | |
2033 | } | |
2034 | ||
2035 | int iwch_ep_disconnect(struct iwch_ep *ep, int abrupt, gfp_t gfp) | |
2036 | { | |
2037 | int ret=0; | |
2038 | unsigned long flags; | |
2039 | int close = 0; | |
04b5d028 SW |
2040 | int fatal = 0; |
2041 | struct t3cdev *tdev; | |
2042 | struct cxio_rdev *rdev; | |
b038ced7 SW |
2043 | |
2044 | spin_lock_irqsave(&ep->com.lock, flags); | |
2045 | ||
33718363 | 2046 | PDBG("%s ep %p state %s, abrupt %d\n", __func__, ep, |
b038ced7 SW |
2047 | states[ep->com.state], abrupt); |
2048 | ||
04b5d028 SW |
2049 | tdev = (struct t3cdev *)ep->com.tdev; |
2050 | rdev = (struct cxio_rdev *)tdev->ulp; | |
2051 | if (cxio_fatal_error(rdev)) { | |
2052 | fatal = 1; | |
2053 | close_complete_upcall(ep); | |
2054 | ep->com.state = DEAD; | |
2055 | } | |
b038ced7 SW |
2056 | switch (ep->com.state) { |
2057 | case MPA_REQ_WAIT: | |
2058 | case MPA_REQ_SENT: | |
2059 | case MPA_REQ_RCVD: | |
2060 | case MPA_REP_SENT: | |
2061 | case FPDU_MODE: | |
b038ced7 | 2062 | close = 1; |
989a1780 SW |
2063 | if (abrupt) |
2064 | ep->com.state = ABORTING; | |
2065 | else { | |
2066 | ep->com.state = CLOSING; | |
2067 | start_ep_timer(ep); | |
2068 | } | |
6e47fe43 | 2069 | set_bit(CLOSE_SENT, &ep->com.flags); |
b038ced7 SW |
2070 | break; |
2071 | case CLOSING: | |
6e47fe43 SW |
2072 | if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) { |
2073 | close = 1; | |
2074 | if (abrupt) { | |
2075 | stop_ep_timer(ep); | |
2076 | ep->com.state = ABORTING; | |
2077 | } else | |
2078 | ep->com.state = MORIBUND; | |
2079 | } | |
b038ced7 SW |
2080 | break; |
2081 | case MORIBUND: | |
989a1780 SW |
2082 | case ABORTING: |
2083 | case DEAD: | |
2084 | PDBG("%s ignoring disconnect ep %p state %u\n", | |
2085 | __func__, ep, ep->com.state); | |
b038ced7 SW |
2086 | break; |
2087 | default: | |
2088 | BUG(); | |
2089 | break; | |
2090 | } | |
989a1780 | 2091 | |
b038ced7 SW |
2092 | spin_unlock_irqrestore(&ep->com.lock, flags); |
2093 | if (close) { | |
2094 | if (abrupt) | |
2095 | ret = send_abort(ep, NULL, gfp); | |
2096 | else | |
2097 | ret = send_halfclose(ep, gfp); | |
04b5d028 SW |
2098 | if (ret) |
2099 | fatal = 1; | |
b038ced7 | 2100 | } |
04b5d028 SW |
2101 | if (fatal) |
2102 | release_ep_resources(ep); | |
b038ced7 SW |
2103 | return ret; |
2104 | } | |
2105 | ||
2106 | int iwch_ep_redirect(void *ctx, struct dst_entry *old, struct dst_entry *new, | |
2107 | struct l2t_entry *l2t) | |
2108 | { | |
2109 | struct iwch_ep *ep = ctx; | |
2110 | ||
2111 | if (ep->dst != old) | |
2112 | return 0; | |
2113 | ||
33718363 | 2114 | PDBG("%s ep %p redirect to dst %p l2t %p\n", __func__, ep, new, |
b038ced7 SW |
2115 | l2t); |
2116 | dst_hold(new); | |
2117 | l2t_release(L2DATA(ep->com.tdev), ep->l2t); | |
2118 | ep->l2t = l2t; | |
2119 | dst_release(old); | |
2120 | ep->dst = new; | |
2121 | return 1; | |
2122 | } | |
2123 | ||
2124 | /* | |
2125 | * All the CM events are handled on a work queue to have a safe context. | |
617c9a7e | 2126 | * These are the real handlers that are called from the work queue. |
b038ced7 | 2127 | */ |
617c9a7e RD |
2128 | static const cxgb3_cpl_handler_func work_handlers[NUM_CPL_CMDS] = { |
2129 | [CPL_ACT_ESTABLISH] = act_establish, | |
2130 | [CPL_ACT_OPEN_RPL] = act_open_rpl, | |
2131 | [CPL_RX_DATA] = rx_data, | |
2132 | [CPL_TX_DMA_ACK] = tx_ack, | |
2133 | [CPL_ABORT_RPL_RSS] = abort_rpl, | |
2134 | [CPL_ABORT_RPL] = abort_rpl, | |
2135 | [CPL_PASS_OPEN_RPL] = pass_open_rpl, | |
2136 | [CPL_CLOSE_LISTSRV_RPL] = close_listsrv_rpl, | |
2137 | [CPL_PASS_ACCEPT_REQ] = pass_accept_req, | |
2138 | [CPL_PASS_ESTABLISH] = pass_establish, | |
2139 | [CPL_PEER_CLOSE] = peer_close, | |
2140 | [CPL_ABORT_REQ_RSS] = peer_abort, | |
2141 | [CPL_CLOSE_CON_RPL] = close_con_rpl, | |
2142 | [CPL_RDMA_TERMINATE] = terminate, | |
2143 | [CPL_RDMA_EC_STATUS] = ec_status, | |
2144 | }; | |
2145 | ||
2146 | static void process_work(struct work_struct *work) | |
2147 | { | |
2148 | struct sk_buff *skb = NULL; | |
2149 | void *ep; | |
2150 | struct t3cdev *tdev; | |
2151 | int ret; | |
2152 | ||
2153 | while ((skb = skb_dequeue(&rxq))) { | |
2154 | ep = *((void **) (skb->cb)); | |
2155 | tdev = *((struct t3cdev **) (skb->cb + sizeof(void *))); | |
2156 | ret = work_handlers[G_OPCODE(ntohl((__force __be32)skb->csum))](tdev, skb, ep); | |
2157 | if (ret & CPL_RET_BUF_DONE) | |
2158 | kfree_skb(skb); | |
2159 | ||
2160 | /* | |
2161 | * ep was referenced in sched(), and is freed here. | |
2162 | */ | |
2163 | put_ep((struct iwch_ep_common *)ep); | |
2164 | } | |
2165 | } | |
2166 | ||
2167 | static DECLARE_WORK(skb_work, process_work); | |
2168 | ||
b038ced7 SW |
2169 | static int sched(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) |
2170 | { | |
2171 | struct iwch_ep_common *epc = ctx; | |
2172 | ||
2173 | get_ep(epc); | |
2174 | ||
2175 | /* | |
2176 | * Save ctx and tdev in the skb->cb area. | |
2177 | */ | |
2178 | *((void **) skb->cb) = ctx; | |
2179 | *((struct t3cdev **) (skb->cb + sizeof(void *))) = tdev; | |
2180 | ||
2181 | /* | |
2182 | * Queue the skb and schedule the worker thread. | |
2183 | */ | |
2184 | skb_queue_tail(&rxq, skb); | |
2185 | queue_work(workq, &skb_work); | |
2186 | return 0; | |
2187 | } | |
2188 | ||
1ca19770 SW |
2189 | static int set_tcb_rpl(struct t3cdev *tdev, struct sk_buff *skb, void *ctx) |
2190 | { | |
2191 | struct cpl_set_tcb_rpl *rpl = cplhdr(skb); | |
2192 | ||
2193 | if (rpl->status != CPL_ERR_NONE) { | |
2194 | printk(KERN_ERR MOD "Unexpected SET_TCB_RPL status %u " | |
2195 | "for tid %u\n", rpl->status, GET_TID(rpl)); | |
2196 | } | |
2197 | return CPL_RET_BUF_DONE; | |
2198 | } | |
2199 | ||
617c9a7e RD |
2200 | /* |
2201 | * All upcalls from the T3 Core go to sched() to schedule the | |
2202 | * processing on a work queue. | |
2203 | */ | |
2204 | cxgb3_cpl_handler_func t3c_handlers[NUM_CPL_CMDS] = { | |
2205 | [CPL_ACT_ESTABLISH] = sched, | |
2206 | [CPL_ACT_OPEN_RPL] = sched, | |
2207 | [CPL_RX_DATA] = sched, | |
2208 | [CPL_TX_DMA_ACK] = sched, | |
2209 | [CPL_ABORT_RPL_RSS] = sched, | |
2210 | [CPL_ABORT_RPL] = sched, | |
2211 | [CPL_PASS_OPEN_RPL] = sched, | |
2212 | [CPL_CLOSE_LISTSRV_RPL] = sched, | |
2213 | [CPL_PASS_ACCEPT_REQ] = sched, | |
2214 | [CPL_PASS_ESTABLISH] = sched, | |
2215 | [CPL_PEER_CLOSE] = sched, | |
2216 | [CPL_CLOSE_CON_RPL] = sched, | |
2217 | [CPL_ABORT_REQ_RSS] = sched, | |
2218 | [CPL_RDMA_TERMINATE] = sched, | |
2219 | [CPL_RDMA_EC_STATUS] = sched, | |
2220 | [CPL_SET_TCB_RPL] = set_tcb_rpl, | |
2221 | }; | |
2222 | ||
b038ced7 SW |
2223 | int __init iwch_cm_init(void) |
2224 | { | |
2225 | skb_queue_head_init(&rxq); | |
2226 | ||
2227 | workq = create_singlethread_workqueue("iw_cxgb3"); | |
2228 | if (!workq) | |
2229 | return -ENOMEM; | |
2230 | ||
b038ced7 SW |
2231 | return 0; |
2232 | } | |
2233 | ||
2234 | void __exit iwch_cm_term(void) | |
2235 | { | |
2236 | flush_workqueue(workq); | |
2237 | destroy_workqueue(workq); | |
2238 | } |