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cfdda9d7 | 1 | /* |
9eccfe10 | 2 | * Copyright (c) 2009-2014 Chelsio, Inc. All rights reserved. |
cfdda9d7 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> | |
34 | #include <linux/workqueue.h> | |
35 | #include <linux/skbuff.h> | |
36 | #include <linux/timer.h> | |
37 | #include <linux/notifier.h> | |
38 | #include <linux/inetdevice.h> | |
39 | #include <linux/ip.h> | |
40 | #include <linux/tcp.h> | |
1cab775c | 41 | #include <linux/if_vlan.h> |
cfdda9d7 SW |
42 | |
43 | #include <net/neighbour.h> | |
44 | #include <net/netevent.h> | |
45 | #include <net/route.h> | |
1cab775c | 46 | #include <net/tcp.h> |
830662f6 VP |
47 | #include <net/ip6_route.h> |
48 | #include <net/addrconf.h> | |
cfdda9d7 | 49 | |
11b8e22d SW |
50 | #include <rdma/ib_addr.h> |
51 | ||
cfdda9d7 | 52 | #include "iw_cxgb4.h" |
84cc6ac6 | 53 | #include "clip_tbl.h" |
cfdda9d7 SW |
54 | |
55 | static char *states[] = { | |
56 | "idle", | |
57 | "listen", | |
58 | "connecting", | |
59 | "mpa_wait_req", | |
60 | "mpa_req_sent", | |
61 | "mpa_req_rcvd", | |
62 | "mpa_rep_sent", | |
63 | "fpdu_mode", | |
64 | "aborting", | |
65 | "closing", | |
66 | "moribund", | |
67 | "dead", | |
68 | NULL, | |
69 | }; | |
70 | ||
5be78ee9 VP |
71 | static int nocong; |
72 | module_param(nocong, int, 0644); | |
73 | MODULE_PARM_DESC(nocong, "Turn of congestion control (default=0)"); | |
74 | ||
75 | static int enable_ecn; | |
76 | module_param(enable_ecn, int, 0644); | |
77 | MODULE_PARM_DESC(enable_ecn, "Enable ECN (default=0/disabled)"); | |
78 | ||
b52fe09e | 79 | static int dack_mode = 1; |
ba6d3925 | 80 | module_param(dack_mode, int, 0644); |
b52fe09e | 81 | MODULE_PARM_DESC(dack_mode, "Delayed ack mode (default=1)"); |
ba6d3925 | 82 | |
4c2c5763 | 83 | uint c4iw_max_read_depth = 32; |
be4c9bad | 84 | module_param(c4iw_max_read_depth, int, 0644); |
4c2c5763 HS |
85 | MODULE_PARM_DESC(c4iw_max_read_depth, |
86 | "Per-connection max ORD/IRD (default=32)"); | |
be4c9bad | 87 | |
cfdda9d7 SW |
88 | static int enable_tcp_timestamps; |
89 | module_param(enable_tcp_timestamps, int, 0644); | |
90 | MODULE_PARM_DESC(enable_tcp_timestamps, "Enable tcp timestamps (default=0)"); | |
91 | ||
92 | static int enable_tcp_sack; | |
93 | module_param(enable_tcp_sack, int, 0644); | |
94 | MODULE_PARM_DESC(enable_tcp_sack, "Enable tcp SACK (default=0)"); | |
95 | ||
96 | static int enable_tcp_window_scaling = 1; | |
97 | module_param(enable_tcp_window_scaling, int, 0644); | |
98 | MODULE_PARM_DESC(enable_tcp_window_scaling, | |
99 | "Enable tcp window scaling (default=1)"); | |
100 | ||
101 | int c4iw_debug; | |
102 | module_param(c4iw_debug, int, 0644); | |
103 | MODULE_PARM_DESC(c4iw_debug, "Enable debug logging (default=0)"); | |
104 | ||
df2d5130 | 105 | static int peer2peer = 1; |
cfdda9d7 | 106 | module_param(peer2peer, int, 0644); |
df2d5130 | 107 | MODULE_PARM_DESC(peer2peer, "Support peer2peer ULPs (default=1)"); |
cfdda9d7 SW |
108 | |
109 | static int p2p_type = FW_RI_INIT_P2PTYPE_READ_REQ; | |
110 | module_param(p2p_type, int, 0644); | |
111 | MODULE_PARM_DESC(p2p_type, "RDMAP opcode to use for the RTR message: " | |
112 | "1=RDMA_READ 0=RDMA_WRITE (default 1)"); | |
113 | ||
114 | static int ep_timeout_secs = 60; | |
115 | module_param(ep_timeout_secs, int, 0644); | |
116 | MODULE_PARM_DESC(ep_timeout_secs, "CM Endpoint operation timeout " | |
117 | "in seconds (default=60)"); | |
118 | ||
b8ac3112 | 119 | static int mpa_rev = 2; |
cfdda9d7 SW |
120 | module_param(mpa_rev, int, 0644); |
121 | MODULE_PARM_DESC(mpa_rev, "MPA Revision, 0 supports amso1100, " | |
ccd2c30b | 122 | "1 is RFC5044 spec compliant, 2 is IETF MPA Peer Connect Draft" |
b8ac3112 | 123 | " compliant (default=2)"); |
cfdda9d7 SW |
124 | |
125 | static int markers_enabled; | |
126 | module_param(markers_enabled, int, 0644); | |
127 | MODULE_PARM_DESC(markers_enabled, "Enable MPA MARKERS (default(0)=disabled)"); | |
128 | ||
129 | static int crc_enabled = 1; | |
130 | module_param(crc_enabled, int, 0644); | |
131 | MODULE_PARM_DESC(crc_enabled, "Enable MPA CRC (default(1)=enabled)"); | |
132 | ||
133 | static int rcv_win = 256 * 1024; | |
134 | module_param(rcv_win, int, 0644); | |
135 | MODULE_PARM_DESC(rcv_win, "TCP receive window in bytes (default=256KB)"); | |
136 | ||
98ae68b7 | 137 | static int snd_win = 128 * 1024; |
cfdda9d7 | 138 | module_param(snd_win, int, 0644); |
98ae68b7 | 139 | MODULE_PARM_DESC(snd_win, "TCP send window in bytes (default=128KB)"); |
cfdda9d7 | 140 | |
cfdda9d7 | 141 | static struct workqueue_struct *workq; |
cfdda9d7 SW |
142 | |
143 | static struct sk_buff_head rxq; | |
cfdda9d7 SW |
144 | |
145 | static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp); | |
146 | static void ep_timeout(unsigned long arg); | |
147 | static void connect_reply_upcall(struct c4iw_ep *ep, int status); | |
9dec900c | 148 | static int sched(struct c4iw_dev *dev, struct sk_buff *skb); |
cfdda9d7 | 149 | |
be4c9bad RD |
150 | static LIST_HEAD(timeout_list); |
151 | static spinlock_t timeout_lock; | |
152 | ||
9ca6f7cf H |
153 | static void deref_cm_id(struct c4iw_ep_common *epc) |
154 | { | |
155 | epc->cm_id->rem_ref(epc->cm_id); | |
156 | epc->cm_id = NULL; | |
157 | set_bit(CM_ID_DEREFED, &epc->history); | |
158 | } | |
159 | ||
160 | static void ref_cm_id(struct c4iw_ep_common *epc) | |
161 | { | |
162 | set_bit(CM_ID_REFED, &epc->history); | |
163 | epc->cm_id->add_ref(epc->cm_id); | |
164 | } | |
165 | ||
325abead VP |
166 | static void deref_qp(struct c4iw_ep *ep) |
167 | { | |
168 | c4iw_qp_rem_ref(&ep->com.qp->ibqp); | |
169 | clear_bit(QP_REFERENCED, &ep->com.flags); | |
9ca6f7cf | 170 | set_bit(QP_DEREFED, &ep->com.history); |
325abead VP |
171 | } |
172 | ||
173 | static void ref_qp(struct c4iw_ep *ep) | |
174 | { | |
175 | set_bit(QP_REFERENCED, &ep->com.flags); | |
9ca6f7cf | 176 | set_bit(QP_REFED, &ep->com.history); |
325abead VP |
177 | c4iw_qp_add_ref(&ep->com.qp->ibqp); |
178 | } | |
179 | ||
cfdda9d7 SW |
180 | static void start_ep_timer(struct c4iw_ep *ep) |
181 | { | |
182 | PDBG("%s ep %p\n", __func__, ep); | |
183 | if (timer_pending(&ep->timer)) { | |
1ec779cc VP |
184 | pr_err("%s timer already started! ep %p\n", |
185 | __func__, ep); | |
186 | return; | |
187 | } | |
188 | clear_bit(TIMEOUT, &ep->com.flags); | |
189 | c4iw_get_ep(&ep->com); | |
cfdda9d7 SW |
190 | ep->timer.expires = jiffies + ep_timeout_secs * HZ; |
191 | ep->timer.data = (unsigned long)ep; | |
192 | ep->timer.function = ep_timeout; | |
193 | add_timer(&ep->timer); | |
194 | } | |
195 | ||
b33bd0cb | 196 | static int stop_ep_timer(struct c4iw_ep *ep) |
cfdda9d7 | 197 | { |
1ec779cc | 198 | PDBG("%s ep %p stopping\n", __func__, ep); |
cfdda9d7 | 199 | del_timer_sync(&ep->timer); |
b33bd0cb | 200 | if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) { |
1ec779cc | 201 | c4iw_put_ep(&ep->com); |
b33bd0cb SW |
202 | return 0; |
203 | } | |
204 | return 1; | |
cfdda9d7 SW |
205 | } |
206 | ||
207 | static int c4iw_l2t_send(struct c4iw_rdev *rdev, struct sk_buff *skb, | |
208 | struct l2t_entry *l2e) | |
209 | { | |
210 | int error = 0; | |
211 | ||
212 | if (c4iw_fatal_error(rdev)) { | |
213 | kfree_skb(skb); | |
214 | PDBG("%s - device in error state - dropping\n", __func__); | |
215 | return -EIO; | |
216 | } | |
217 | error = cxgb4_l2t_send(rdev->lldi.ports[0], skb, l2e); | |
218 | if (error < 0) | |
219 | kfree_skb(skb); | |
caa6c9f2 H |
220 | else if (error == NET_XMIT_DROP) |
221 | return -ENOMEM; | |
74594861 | 222 | return error < 0 ? error : 0; |
cfdda9d7 SW |
223 | } |
224 | ||
225 | int c4iw_ofld_send(struct c4iw_rdev *rdev, struct sk_buff *skb) | |
226 | { | |
227 | int error = 0; | |
228 | ||
229 | if (c4iw_fatal_error(rdev)) { | |
230 | kfree_skb(skb); | |
231 | PDBG("%s - device in error state - dropping\n", __func__); | |
232 | return -EIO; | |
233 | } | |
234 | error = cxgb4_ofld_send(rdev->lldi.ports[0], skb); | |
235 | if (error < 0) | |
236 | kfree_skb(skb); | |
74594861 | 237 | return error < 0 ? error : 0; |
cfdda9d7 SW |
238 | } |
239 | ||
240 | static void release_tid(struct c4iw_rdev *rdev, u32 hwtid, struct sk_buff *skb) | |
241 | { | |
242 | struct cpl_tid_release *req; | |
243 | ||
244 | skb = get_skb(skb, sizeof *req, GFP_KERNEL); | |
245 | if (!skb) | |
246 | return; | |
247 | req = (struct cpl_tid_release *) skb_put(skb, sizeof(*req)); | |
248 | INIT_TP_WR(req, hwtid); | |
249 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_TID_RELEASE, hwtid)); | |
250 | set_wr_txq(skb, CPL_PRIORITY_SETUP, 0); | |
251 | c4iw_ofld_send(rdev, skb); | |
252 | return; | |
253 | } | |
254 | ||
255 | static void set_emss(struct c4iw_ep *ep, u16 opt) | |
256 | { | |
6c53e938 | 257 | ep->emss = ep->com.dev->rdev.lldi.mtus[TCPOPT_MSS_G(opt)] - |
04524a47 H |
258 | ((AF_INET == ep->com.remote_addr.ss_family) ? |
259 | sizeof(struct iphdr) : sizeof(struct ipv6hdr)) - | |
260 | sizeof(struct tcphdr); | |
cfdda9d7 | 261 | ep->mss = ep->emss; |
6c53e938 | 262 | if (TCPOPT_TSTAMP_G(opt)) |
04524a47 | 263 | ep->emss -= round_up(TCPOLEN_TIMESTAMP, 4); |
cfdda9d7 SW |
264 | if (ep->emss < 128) |
265 | ep->emss = 128; | |
92e7ae71 HS |
266 | if (ep->emss & 7) |
267 | PDBG("Warning: misaligned mtu idx %u mss %u emss=%u\n", | |
6c53e938 HS |
268 | TCPOPT_MSS_G(opt), ep->mss, ep->emss); |
269 | PDBG("%s mss_idx %u mss %u emss=%u\n", __func__, TCPOPT_MSS_G(opt), | |
cfdda9d7 SW |
270 | ep->mss, ep->emss); |
271 | } | |
272 | ||
273 | static enum c4iw_ep_state state_read(struct c4iw_ep_common *epc) | |
274 | { | |
cfdda9d7 SW |
275 | enum c4iw_ep_state state; |
276 | ||
2f5b48c3 | 277 | mutex_lock(&epc->mutex); |
cfdda9d7 | 278 | state = epc->state; |
2f5b48c3 | 279 | mutex_unlock(&epc->mutex); |
cfdda9d7 SW |
280 | return state; |
281 | } | |
282 | ||
283 | static void __state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new) | |
284 | { | |
285 | epc->state = new; | |
286 | } | |
287 | ||
288 | static void state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new) | |
289 | { | |
2f5b48c3 | 290 | mutex_lock(&epc->mutex); |
cfdda9d7 SW |
291 | PDBG("%s - %s -> %s\n", __func__, states[epc->state], states[new]); |
292 | __state_set(epc, new); | |
2f5b48c3 | 293 | mutex_unlock(&epc->mutex); |
cfdda9d7 SW |
294 | return; |
295 | } | |
296 | ||
4a740838 H |
297 | static int alloc_ep_skb_list(struct sk_buff_head *ep_skb_list, int size) |
298 | { | |
299 | struct sk_buff *skb; | |
300 | unsigned int i; | |
301 | size_t len; | |
302 | ||
303 | len = roundup(sizeof(union cpl_wr_size), 16); | |
304 | for (i = 0; i < size; i++) { | |
305 | skb = alloc_skb(len, GFP_KERNEL); | |
306 | if (!skb) | |
307 | goto fail; | |
308 | skb_queue_tail(ep_skb_list, skb); | |
309 | } | |
310 | return 0; | |
311 | fail: | |
312 | skb_queue_purge(ep_skb_list); | |
313 | return -ENOMEM; | |
314 | } | |
315 | ||
cfdda9d7 SW |
316 | static void *alloc_ep(int size, gfp_t gfp) |
317 | { | |
318 | struct c4iw_ep_common *epc; | |
319 | ||
320 | epc = kzalloc(size, gfp); | |
321 | if (epc) { | |
322 | kref_init(&epc->kref); | |
2f5b48c3 | 323 | mutex_init(&epc->mutex); |
aadc4df3 | 324 | c4iw_init_wr_wait(&epc->wr_wait); |
cfdda9d7 SW |
325 | } |
326 | PDBG("%s alloc ep %p\n", __func__, epc); | |
327 | return epc; | |
328 | } | |
329 | ||
944661dd H |
330 | static void remove_ep_tid(struct c4iw_ep *ep) |
331 | { | |
332 | unsigned long flags; | |
333 | ||
334 | spin_lock_irqsave(&ep->com.dev->lock, flags); | |
335 | _remove_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep->hwtid, 0); | |
336 | spin_unlock_irqrestore(&ep->com.dev->lock, flags); | |
337 | } | |
338 | ||
339 | static void insert_ep_tid(struct c4iw_ep *ep) | |
340 | { | |
341 | unsigned long flags; | |
342 | ||
343 | spin_lock_irqsave(&ep->com.dev->lock, flags); | |
344 | _insert_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep, ep->hwtid, 0); | |
345 | spin_unlock_irqrestore(&ep->com.dev->lock, flags); | |
346 | } | |
347 | ||
348 | /* | |
349 | * Atomically lookup the ep ptr given the tid and grab a reference on the ep. | |
350 | */ | |
351 | static struct c4iw_ep *get_ep_from_tid(struct c4iw_dev *dev, unsigned int tid) | |
352 | { | |
353 | struct c4iw_ep *ep; | |
354 | unsigned long flags; | |
355 | ||
356 | spin_lock_irqsave(&dev->lock, flags); | |
357 | ep = idr_find(&dev->hwtid_idr, tid); | |
358 | if (ep) | |
359 | c4iw_get_ep(&ep->com); | |
360 | spin_unlock_irqrestore(&dev->lock, flags); | |
361 | return ep; | |
362 | } | |
363 | ||
f86fac79 H |
364 | /* |
365 | * Atomically lookup the ep ptr given the stid and grab a reference on the ep. | |
366 | */ | |
367 | static struct c4iw_listen_ep *get_ep_from_stid(struct c4iw_dev *dev, | |
368 | unsigned int stid) | |
369 | { | |
370 | struct c4iw_listen_ep *ep; | |
371 | unsigned long flags; | |
372 | ||
373 | spin_lock_irqsave(&dev->lock, flags); | |
374 | ep = idr_find(&dev->stid_idr, stid); | |
375 | if (ep) | |
376 | c4iw_get_ep(&ep->com); | |
377 | spin_unlock_irqrestore(&dev->lock, flags); | |
378 | return ep; | |
379 | } | |
380 | ||
cfdda9d7 SW |
381 | void _c4iw_free_ep(struct kref *kref) |
382 | { | |
383 | struct c4iw_ep *ep; | |
384 | ||
385 | ep = container_of(kref, struct c4iw_ep, com.kref); | |
9dec900c | 386 | PDBG("%s ep %p state %s\n", __func__, ep, states[ep->com.state]); |
325abead VP |
387 | if (test_bit(QP_REFERENCED, &ep->com.flags)) |
388 | deref_qp(ep); | |
cfdda9d7 | 389 | if (test_bit(RELEASE_RESOURCES, &ep->com.flags)) { |
84cc6ac6 H |
390 | if (ep->com.remote_addr.ss_family == AF_INET6) { |
391 | struct sockaddr_in6 *sin6 = | |
392 | (struct sockaddr_in6 *) | |
170003c8 | 393 | &ep->com.local_addr; |
84cc6ac6 H |
394 | |
395 | cxgb4_clip_release( | |
396 | ep->com.dev->rdev.lldi.ports[0], | |
397 | (const u32 *)&sin6->sin6_addr.s6_addr, | |
398 | 1); | |
399 | } | |
cfdda9d7 SW |
400 | cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid); |
401 | dst_release(ep->dst); | |
402 | cxgb4_l2t_release(ep->l2t); | |
c878b706 H |
403 | if (ep->mpa_skb) |
404 | kfree_skb(ep->mpa_skb); | |
cfdda9d7 | 405 | } |
4a740838 H |
406 | if (!skb_queue_empty(&ep->com.ep_skb_list)) |
407 | skb_queue_purge(&ep->com.ep_skb_list); | |
cfdda9d7 SW |
408 | kfree(ep); |
409 | } | |
410 | ||
411 | static void release_ep_resources(struct c4iw_ep *ep) | |
412 | { | |
413 | set_bit(RELEASE_RESOURCES, &ep->com.flags); | |
944661dd H |
414 | |
415 | /* | |
416 | * If we have a hwtid, then remove it from the idr table | |
417 | * so lookups will no longer find this endpoint. Otherwise | |
418 | * we have a race where one thread finds the ep ptr just | |
419 | * before the other thread is freeing the ep memory. | |
420 | */ | |
421 | if (ep->hwtid != -1) | |
422 | remove_ep_tid(ep); | |
cfdda9d7 SW |
423 | c4iw_put_ep(&ep->com); |
424 | } | |
425 | ||
cfdda9d7 SW |
426 | static int status2errno(int status) |
427 | { | |
428 | switch (status) { | |
429 | case CPL_ERR_NONE: | |
430 | return 0; | |
431 | case CPL_ERR_CONN_RESET: | |
432 | return -ECONNRESET; | |
433 | case CPL_ERR_ARP_MISS: | |
434 | return -EHOSTUNREACH; | |
435 | case CPL_ERR_CONN_TIMEDOUT: | |
436 | return -ETIMEDOUT; | |
437 | case CPL_ERR_TCAM_FULL: | |
438 | return -ENOMEM; | |
439 | case CPL_ERR_CONN_EXIST: | |
440 | return -EADDRINUSE; | |
441 | default: | |
442 | return -EIO; | |
443 | } | |
444 | } | |
445 | ||
446 | /* | |
447 | * Try and reuse skbs already allocated... | |
448 | */ | |
449 | static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp) | |
450 | { | |
451 | if (skb && !skb_is_nonlinear(skb) && !skb_cloned(skb)) { | |
452 | skb_trim(skb, 0); | |
453 | skb_get(skb); | |
454 | skb_reset_transport_header(skb); | |
455 | } else { | |
456 | skb = alloc_skb(len, gfp); | |
457 | } | |
b38a0ad8 | 458 | t4_set_arp_err_handler(skb, NULL, NULL); |
cfdda9d7 SW |
459 | return skb; |
460 | } | |
461 | ||
830662f6 VP |
462 | static struct net_device *get_real_dev(struct net_device *egress_dev) |
463 | { | |
11b8e22d | 464 | return rdma_vlan_dev_real_dev(egress_dev) ? : egress_dev; |
830662f6 VP |
465 | } |
466 | ||
467 | static int our_interface(struct c4iw_dev *dev, struct net_device *egress_dev) | |
468 | { | |
469 | int i; | |
470 | ||
471 | egress_dev = get_real_dev(egress_dev); | |
472 | for (i = 0; i < dev->rdev.lldi.nports; i++) | |
473 | if (dev->rdev.lldi.ports[i] == egress_dev) | |
474 | return 1; | |
475 | return 0; | |
476 | } | |
477 | ||
478 | static struct dst_entry *find_route6(struct c4iw_dev *dev, __u8 *local_ip, | |
479 | __u8 *peer_ip, __be16 local_port, | |
480 | __be16 peer_port, u8 tos, | |
481 | __u32 sin6_scope_id) | |
482 | { | |
483 | struct dst_entry *dst = NULL; | |
484 | ||
485 | if (IS_ENABLED(CONFIG_IPV6)) { | |
486 | struct flowi6 fl6; | |
487 | ||
488 | memset(&fl6, 0, sizeof(fl6)); | |
489 | memcpy(&fl6.daddr, peer_ip, 16); | |
490 | memcpy(&fl6.saddr, local_ip, 16); | |
491 | if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL) | |
492 | fl6.flowi6_oif = sin6_scope_id; | |
493 | dst = ip6_route_output(&init_net, NULL, &fl6); | |
494 | if (!dst) | |
495 | goto out; | |
496 | if (!our_interface(dev, ip6_dst_idev(dst)->dev) && | |
497 | !(ip6_dst_idev(dst)->dev->flags & IFF_LOOPBACK)) { | |
498 | dst_release(dst); | |
499 | dst = NULL; | |
500 | } | |
501 | } | |
502 | ||
503 | out: | |
504 | return dst; | |
505 | } | |
506 | ||
507 | static struct dst_entry *find_route(struct c4iw_dev *dev, __be32 local_ip, | |
cfdda9d7 SW |
508 | __be32 peer_ip, __be16 local_port, |
509 | __be16 peer_port, u8 tos) | |
510 | { | |
511 | struct rtable *rt; | |
31e4543d | 512 | struct flowi4 fl4; |
830662f6 | 513 | struct neighbour *n; |
78fbfd8a | 514 | |
31e4543d | 515 | rt = ip_route_output_ports(&init_net, &fl4, NULL, peer_ip, local_ip, |
78fbfd8a DM |
516 | peer_port, local_port, IPPROTO_TCP, |
517 | tos, 0); | |
b23dd4fe | 518 | if (IS_ERR(rt)) |
cfdda9d7 | 519 | return NULL; |
830662f6 VP |
520 | n = dst_neigh_lookup(&rt->dst, &peer_ip); |
521 | if (!n) | |
522 | return NULL; | |
f8e81908 SW |
523 | if (!our_interface(dev, n->dev) && |
524 | !(n->dev->flags & IFF_LOOPBACK)) { | |
d480201b | 525 | neigh_release(n); |
830662f6 VP |
526 | dst_release(&rt->dst); |
527 | return NULL; | |
528 | } | |
529 | neigh_release(n); | |
530 | return &rt->dst; | |
cfdda9d7 SW |
531 | } |
532 | ||
533 | static void arp_failure_discard(void *handle, struct sk_buff *skb) | |
534 | { | |
9dec900c | 535 | pr_err(MOD "ARP failure\n"); |
cfdda9d7 SW |
536 | kfree_skb(skb); |
537 | } | |
538 | ||
64bec74a H |
539 | static void mpa_start_arp_failure(void *handle, struct sk_buff *skb) |
540 | { | |
541 | pr_err("ARP failure during MPA Negotiation - Closing Connection\n"); | |
542 | } | |
543 | ||
9dec900c | 544 | enum { |
8d1f1a6b | 545 | NUM_FAKE_CPLS = 2, |
9dec900c | 546 | FAKE_CPL_PUT_EP_SAFE = NUM_CPL_CMDS + 0, |
8d1f1a6b | 547 | FAKE_CPL_PASS_PUT_EP_SAFE = NUM_CPL_CMDS + 1, |
9dec900c H |
548 | }; |
549 | ||
550 | static int _put_ep_safe(struct c4iw_dev *dev, struct sk_buff *skb) | |
551 | { | |
552 | struct c4iw_ep *ep; | |
553 | ||
554 | ep = *((struct c4iw_ep **)(skb->cb + 2 * sizeof(void *))); | |
555 | release_ep_resources(ep); | |
556 | return 0; | |
557 | } | |
558 | ||
8d1f1a6b H |
559 | static int _put_pass_ep_safe(struct c4iw_dev *dev, struct sk_buff *skb) |
560 | { | |
561 | struct c4iw_ep *ep; | |
562 | ||
563 | ep = *((struct c4iw_ep **)(skb->cb + 2 * sizeof(void *))); | |
564 | c4iw_put_ep(&ep->parent_ep->com); | |
565 | release_ep_resources(ep); | |
566 | return 0; | |
567 | } | |
568 | ||
9dec900c H |
569 | /* |
570 | * Fake up a special CPL opcode and call sched() so process_work() will call | |
571 | * _put_ep_safe() in a safe context to free the ep resources. This is needed | |
572 | * because ARP error handlers are called in an ATOMIC context, and | |
573 | * _c4iw_free_ep() needs to block. | |
574 | */ | |
8d1f1a6b H |
575 | static void queue_arp_failure_cpl(struct c4iw_ep *ep, struct sk_buff *skb, |
576 | int cpl) | |
9dec900c H |
577 | { |
578 | struct cpl_act_establish *rpl = cplhdr(skb); | |
579 | ||
580 | /* Set our special ARP_FAILURE opcode */ | |
8d1f1a6b | 581 | rpl->ot.opcode = cpl; |
9dec900c H |
582 | |
583 | /* | |
584 | * Save ep in the skb->cb area, after where sched() will save the dev | |
585 | * ptr. | |
586 | */ | |
587 | *((struct c4iw_ep **)(skb->cb + 2 * sizeof(void *))) = ep; | |
588 | sched(ep->com.dev, skb); | |
589 | } | |
590 | ||
591 | /* Handle an ARP failure for an accept */ | |
592 | static void pass_accept_rpl_arp_failure(void *handle, struct sk_buff *skb) | |
593 | { | |
594 | struct c4iw_ep *ep = handle; | |
595 | ||
596 | pr_err(MOD "ARP failure during accept - tid %u -dropping connection\n", | |
597 | ep->hwtid); | |
598 | ||
599 | __state_set(&ep->com, DEAD); | |
8d1f1a6b | 600 | queue_arp_failure_cpl(ep, skb, FAKE_CPL_PASS_PUT_EP_SAFE); |
9dec900c H |
601 | } |
602 | ||
cfdda9d7 SW |
603 | /* |
604 | * Handle an ARP failure for an active open. | |
605 | */ | |
606 | static void act_open_req_arp_failure(void *handle, struct sk_buff *skb) | |
607 | { | |
5dab6d3a H |
608 | struct c4iw_ep *ep = handle; |
609 | ||
e3d132d1 | 610 | printk(KERN_ERR MOD "ARP failure during connect\n"); |
5dab6d3a | 611 | connect_reply_upcall(ep, -EHOSTUNREACH); |
9dec900c | 612 | __state_set(&ep->com, DEAD); |
84cc6ac6 H |
613 | if (ep->com.remote_addr.ss_family == AF_INET6) { |
614 | struct sockaddr_in6 *sin6 = | |
170003c8 | 615 | (struct sockaddr_in6 *)&ep->com.local_addr; |
84cc6ac6 H |
616 | cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0], |
617 | (const u32 *)&sin6->sin6_addr.s6_addr, 1); | |
618 | } | |
5dab6d3a H |
619 | remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid); |
620 | cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid); | |
8d1f1a6b | 621 | queue_arp_failure_cpl(ep, skb, FAKE_CPL_PUT_EP_SAFE); |
cfdda9d7 SW |
622 | } |
623 | ||
624 | /* | |
625 | * Handle an ARP failure for a CPL_ABORT_REQ. Change it into a no RST variant | |
626 | * and send it along. | |
627 | */ | |
628 | static void abort_arp_failure(void *handle, struct sk_buff *skb) | |
629 | { | |
761e19a5 H |
630 | int ret; |
631 | struct c4iw_ep *ep = handle; | |
632 | struct c4iw_rdev *rdev = &ep->com.dev->rdev; | |
cfdda9d7 SW |
633 | struct cpl_abort_req *req = cplhdr(skb); |
634 | ||
635 | PDBG("%s rdev %p\n", __func__, rdev); | |
636 | req->cmd = CPL_ABORT_NO_RST; | |
761e19a5 H |
637 | ret = c4iw_ofld_send(rdev, skb); |
638 | if (ret) { | |
639 | __state_set(&ep->com, DEAD); | |
640 | queue_arp_failure_cpl(ep, skb, FAKE_CPL_PUT_EP_SAFE); | |
641 | } | |
cfdda9d7 SW |
642 | } |
643 | ||
4a740838 | 644 | static int send_flowc(struct c4iw_ep *ep) |
cfdda9d7 | 645 | { |
cfdda9d7 | 646 | struct fw_flowc_wr *flowc; |
4a740838 | 647 | struct sk_buff *skb = skb_dequeue(&ep->com.ep_skb_list); |
cfdda9d7 | 648 | int i; |
ac8e4c69 H |
649 | u16 vlan = ep->l2t->vlan; |
650 | int nparams; | |
651 | ||
4a740838 H |
652 | if (WARN_ON(!skb)) |
653 | return -ENOMEM; | |
654 | ||
ac8e4c69 H |
655 | if (vlan == CPL_L2T_VLAN_NONE) |
656 | nparams = 8; | |
657 | else | |
658 | nparams = 9; | |
cfdda9d7 | 659 | |
4a740838 | 660 | flowc = (struct fw_flowc_wr *)__skb_put(skb, FLOWC_LEN); |
cfdda9d7 | 661 | |
e2ac9628 | 662 | flowc->op_to_nparams = cpu_to_be32(FW_WR_OP_V(FW_FLOWC_WR) | |
ac8e4c69 | 663 | FW_FLOWC_WR_NPARAMS_V(nparams)); |
4a740838 | 664 | flowc->flowid_len16 = cpu_to_be32(FW_WR_LEN16_V(DIV_ROUND_UP(FLOWC_LEN, |
e2ac9628 | 665 | 16)) | FW_WR_FLOWID_V(ep->hwtid)); |
cfdda9d7 SW |
666 | |
667 | flowc->mnemval[0].mnemonic = FW_FLOWC_MNEM_PFNVFN; | |
5167865a | 668 | flowc->mnemval[0].val = cpu_to_be32(FW_PFVF_CMD_PFN_V |
35b1de55 | 669 | (ep->com.dev->rdev.lldi.pf)); |
cfdda9d7 SW |
670 | flowc->mnemval[1].mnemonic = FW_FLOWC_MNEM_CH; |
671 | flowc->mnemval[1].val = cpu_to_be32(ep->tx_chan); | |
672 | flowc->mnemval[2].mnemonic = FW_FLOWC_MNEM_PORT; | |
673 | flowc->mnemval[2].val = cpu_to_be32(ep->tx_chan); | |
674 | flowc->mnemval[3].mnemonic = FW_FLOWC_MNEM_IQID; | |
675 | flowc->mnemval[3].val = cpu_to_be32(ep->rss_qid); | |
676 | flowc->mnemval[4].mnemonic = FW_FLOWC_MNEM_SNDNXT; | |
677 | flowc->mnemval[4].val = cpu_to_be32(ep->snd_seq); | |
678 | flowc->mnemval[5].mnemonic = FW_FLOWC_MNEM_RCVNXT; | |
679 | flowc->mnemval[5].val = cpu_to_be32(ep->rcv_seq); | |
680 | flowc->mnemval[6].mnemonic = FW_FLOWC_MNEM_SNDBUF; | |
b408ff28 | 681 | flowc->mnemval[6].val = cpu_to_be32(ep->snd_win); |
cfdda9d7 SW |
682 | flowc->mnemval[7].mnemonic = FW_FLOWC_MNEM_MSS; |
683 | flowc->mnemval[7].val = cpu_to_be32(ep->emss); | |
ac8e4c69 H |
684 | if (nparams == 9) { |
685 | u16 pri; | |
686 | ||
687 | pri = (vlan & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT; | |
688 | flowc->mnemval[8].mnemonic = FW_FLOWC_MNEM_SCHEDCLASS; | |
689 | flowc->mnemval[8].val = cpu_to_be32(pri); | |
690 | } else { | |
691 | /* Pad WR to 16 byte boundary */ | |
692 | flowc->mnemval[8].mnemonic = 0; | |
693 | flowc->mnemval[8].val = 0; | |
694 | } | |
cfdda9d7 SW |
695 | for (i = 0; i < 9; i++) { |
696 | flowc->mnemval[i].r4[0] = 0; | |
697 | flowc->mnemval[i].r4[1] = 0; | |
698 | flowc->mnemval[i].r4[2] = 0; | |
699 | } | |
700 | ||
701 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
fef4422d | 702 | return c4iw_ofld_send(&ep->com.dev->rdev, skb); |
cfdda9d7 SW |
703 | } |
704 | ||
4a740838 | 705 | static int send_halfclose(struct c4iw_ep *ep) |
cfdda9d7 SW |
706 | { |
707 | struct cpl_close_con_req *req; | |
4a740838 | 708 | struct sk_buff *skb = skb_dequeue(&ep->com.ep_skb_list); |
cfdda9d7 SW |
709 | int wrlen = roundup(sizeof *req, 16); |
710 | ||
711 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
4a740838 | 712 | if (WARN_ON(!skb)) |
cfdda9d7 | 713 | return -ENOMEM; |
4a740838 | 714 | |
cfdda9d7 SW |
715 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); |
716 | t4_set_arp_err_handler(skb, NULL, arp_failure_discard); | |
717 | req = (struct cpl_close_con_req *) skb_put(skb, wrlen); | |
718 | memset(req, 0, wrlen); | |
719 | INIT_TP_WR(req, ep->hwtid); | |
720 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_CLOSE_CON_REQ, | |
721 | ep->hwtid)); | |
722 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); | |
723 | } | |
724 | ||
4a740838 | 725 | static int send_abort(struct c4iw_ep *ep) |
cfdda9d7 SW |
726 | { |
727 | struct cpl_abort_req *req; | |
728 | int wrlen = roundup(sizeof *req, 16); | |
4a740838 | 729 | struct sk_buff *req_skb = skb_dequeue(&ep->com.ep_skb_list); |
cfdda9d7 SW |
730 | |
731 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
4a740838 | 732 | if (WARN_ON(!req_skb)) |
cfdda9d7 | 733 | return -ENOMEM; |
4a740838 H |
734 | |
735 | set_wr_txq(req_skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
736 | t4_set_arp_err_handler(req_skb, ep, abort_arp_failure); | |
737 | req = (struct cpl_abort_req *)skb_put(req_skb, wrlen); | |
cfdda9d7 SW |
738 | memset(req, 0, wrlen); |
739 | INIT_TP_WR(req, ep->hwtid); | |
740 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_REQ, ep->hwtid)); | |
741 | req->cmd = CPL_ABORT_SEND_RST; | |
4a740838 | 742 | return c4iw_l2t_send(&ep->com.dev->rdev, req_skb, ep->l2t); |
cfdda9d7 SW |
743 | } |
744 | ||
92e7ae71 | 745 | static void best_mtu(const unsigned short *mtus, unsigned short mtu, |
04524a47 | 746 | unsigned int *idx, int use_ts, int ipv6) |
92e7ae71 | 747 | { |
04524a47 H |
748 | unsigned short hdr_size = (ipv6 ? |
749 | sizeof(struct ipv6hdr) : | |
750 | sizeof(struct iphdr)) + | |
92e7ae71 | 751 | sizeof(struct tcphdr) + |
04524a47 H |
752 | (use_ts ? |
753 | round_up(TCPOLEN_TIMESTAMP, 4) : 0); | |
92e7ae71 HS |
754 | unsigned short data_size = mtu - hdr_size; |
755 | ||
756 | cxgb4_best_aligned_mtu(mtus, hdr_size, data_size, 8, idx); | |
757 | } | |
758 | ||
cfdda9d7 SW |
759 | static int send_connect(struct c4iw_ep *ep) |
760 | { | |
963cab50 H |
761 | struct cpl_act_open_req *req = NULL; |
762 | struct cpl_t5_act_open_req *t5req = NULL; | |
763 | struct cpl_t6_act_open_req *t6req = NULL; | |
764 | struct cpl_act_open_req6 *req6 = NULL; | |
765 | struct cpl_t5_act_open_req6 *t5req6 = NULL; | |
766 | struct cpl_t6_act_open_req6 *t6req6 = NULL; | |
cfdda9d7 SW |
767 | struct sk_buff *skb; |
768 | u64 opt0; | |
769 | u32 opt2; | |
770 | unsigned int mtu_idx; | |
771 | int wscale; | |
963cab50 | 772 | int win, sizev4, sizev6, wrlen; |
9eccfe10 | 773 | struct sockaddr_in *la = (struct sockaddr_in *) |
170003c8 | 774 | &ep->com.local_addr; |
9eccfe10 | 775 | struct sockaddr_in *ra = (struct sockaddr_in *) |
170003c8 | 776 | &ep->com.remote_addr; |
9eccfe10 | 777 | struct sockaddr_in6 *la6 = (struct sockaddr_in6 *) |
170003c8 | 778 | &ep->com.local_addr; |
9eccfe10 | 779 | struct sockaddr_in6 *ra6 = (struct sockaddr_in6 *) |
170003c8 | 780 | &ep->com.remote_addr; |
84cc6ac6 | 781 | int ret; |
963cab50 H |
782 | enum chip_type adapter_type = ep->com.dev->rdev.lldi.adapter_type; |
783 | u32 isn = (prandom_u32() & ~7UL) - 1; | |
784 | ||
785 | switch (CHELSIO_CHIP_VERSION(adapter_type)) { | |
786 | case CHELSIO_T4: | |
787 | sizev4 = sizeof(struct cpl_act_open_req); | |
788 | sizev6 = sizeof(struct cpl_act_open_req6); | |
789 | break; | |
790 | case CHELSIO_T5: | |
791 | sizev4 = sizeof(struct cpl_t5_act_open_req); | |
792 | sizev6 = sizeof(struct cpl_t5_act_open_req6); | |
793 | break; | |
794 | case CHELSIO_T6: | |
795 | sizev4 = sizeof(struct cpl_t6_act_open_req); | |
796 | sizev6 = sizeof(struct cpl_t6_act_open_req6); | |
797 | break; | |
798 | default: | |
799 | pr_err("T%d Chip is not supported\n", | |
800 | CHELSIO_CHIP_VERSION(adapter_type)); | |
801 | return -EINVAL; | |
802 | } | |
830662f6 VP |
803 | |
804 | wrlen = (ep->com.remote_addr.ss_family == AF_INET) ? | |
805 | roundup(sizev4, 16) : | |
806 | roundup(sizev6, 16); | |
cfdda9d7 SW |
807 | |
808 | PDBG("%s ep %p atid %u\n", __func__, ep, ep->atid); | |
809 | ||
810 | skb = get_skb(NULL, wrlen, GFP_KERNEL); | |
811 | if (!skb) { | |
812 | printk(KERN_ERR MOD "%s - failed to alloc skb.\n", | |
813 | __func__); | |
814 | return -ENOMEM; | |
815 | } | |
d4f1a5c6 | 816 | set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx); |
cfdda9d7 | 817 | |
92e7ae71 | 818 | best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx, |
04524a47 H |
819 | enable_tcp_timestamps, |
820 | (AF_INET == ep->com.remote_addr.ss_family) ? 0 : 1); | |
cfdda9d7 | 821 | wscale = compute_wscale(rcv_win); |
b408ff28 HS |
822 | |
823 | /* | |
824 | * Specify the largest window that will fit in opt0. The | |
825 | * remainder will be specified in the rx_data_ack. | |
826 | */ | |
827 | win = ep->rcv_win >> 10; | |
d7990b0c AB |
828 | if (win > RCV_BUFSIZ_M) |
829 | win = RCV_BUFSIZ_M; | |
b408ff28 | 830 | |
6c53e938 | 831 | opt0 = (nocong ? NO_CONG_F : 0) | |
d7990b0c | 832 | KEEP_ALIVE_F | |
6c53e938 | 833 | DELACK_F | |
d7990b0c AB |
834 | WND_SCALE_V(wscale) | |
835 | MSS_IDX_V(mtu_idx) | | |
836 | L2T_IDX_V(ep->l2t->idx) | | |
837 | TX_CHAN_V(ep->tx_chan) | | |
838 | SMAC_SEL_V(ep->smac_idx) | | |
ac8e4c69 | 839 | DSCP_V(ep->tos >> 2) | |
d7990b0c AB |
840 | ULP_MODE_V(ULP_MODE_TCPDDP) | |
841 | RCV_BUFSIZ_V(win); | |
842 | opt2 = RX_CHANNEL_V(0) | | |
6c53e938 | 843 | CCTRL_ECN_V(enable_ecn) | |
d7990b0c | 844 | RSS_QUEUE_VALID_F | RSS_QUEUE_V(ep->rss_qid); |
cfdda9d7 | 845 | if (enable_tcp_timestamps) |
6c53e938 | 846 | opt2 |= TSTAMPS_EN_F; |
cfdda9d7 | 847 | if (enable_tcp_sack) |
6c53e938 | 848 | opt2 |= SACK_EN_F; |
cfdda9d7 | 849 | if (wscale && enable_tcp_window_scaling) |
d7990b0c | 850 | opt2 |= WND_SCALE_EN_F; |
963cab50 H |
851 | if (CHELSIO_CHIP_VERSION(adapter_type) > CHELSIO_T4) { |
852 | if (peer2peer) | |
853 | isn += 4; | |
854 | ||
d7990b0c | 855 | opt2 |= T5_OPT_2_VALID_F; |
cf7fe64a | 856 | opt2 |= CONG_CNTRL_V(CONG_ALG_TAHOE); |
0b741047 | 857 | opt2 |= T5_ISS_F; |
92e5011a | 858 | } |
84cc6ac6 H |
859 | |
860 | if (ep->com.remote_addr.ss_family == AF_INET6) | |
861 | cxgb4_clip_get(ep->com.dev->rdev.lldi.ports[0], | |
862 | (const u32 *)&la6->sin6_addr.s6_addr, 1); | |
863 | ||
5dab6d3a | 864 | t4_set_arp_err_handler(skb, ep, act_open_req_arp_failure); |
cfdda9d7 | 865 | |
963cab50 H |
866 | if (ep->com.remote_addr.ss_family == AF_INET) { |
867 | switch (CHELSIO_CHIP_VERSION(adapter_type)) { | |
868 | case CHELSIO_T4: | |
869 | req = (struct cpl_act_open_req *)skb_put(skb, wrlen); | |
830662f6 | 870 | INIT_TP_WR(req, 0); |
963cab50 H |
871 | break; |
872 | case CHELSIO_T5: | |
873 | t5req = (struct cpl_t5_act_open_req *)skb_put(skb, | |
874 | wrlen); | |
875 | INIT_TP_WR(t5req, 0); | |
876 | req = (struct cpl_act_open_req *)t5req; | |
877 | break; | |
878 | case CHELSIO_T6: | |
879 | t6req = (struct cpl_t6_act_open_req *)skb_put(skb, | |
880 | wrlen); | |
881 | INIT_TP_WR(t6req, 0); | |
882 | req = (struct cpl_act_open_req *)t6req; | |
883 | t5req = (struct cpl_t5_act_open_req *)t6req; | |
884 | break; | |
885 | default: | |
886 | pr_err("T%d Chip is not supported\n", | |
887 | CHELSIO_CHIP_VERSION(adapter_type)); | |
888 | ret = -EINVAL; | |
889 | goto clip_release; | |
890 | } | |
891 | ||
892 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ, | |
893 | ((ep->rss_qid<<14) | ep->atid))); | |
894 | req->local_port = la->sin_port; | |
895 | req->peer_port = ra->sin_port; | |
896 | req->local_ip = la->sin_addr.s_addr; | |
897 | req->peer_ip = ra->sin_addr.s_addr; | |
898 | req->opt0 = cpu_to_be64(opt0); | |
899 | ||
900 | if (is_t4(ep->com.dev->rdev.lldi.adapter_type)) { | |
41b4f86c KS |
901 | req->params = cpu_to_be32(cxgb4_select_ntuple( |
902 | ep->com.dev->rdev.lldi.ports[0], | |
903 | ep->l2t)); | |
830662f6 VP |
904 | req->opt2 = cpu_to_be32(opt2); |
905 | } else { | |
963cab50 H |
906 | t5req->params = cpu_to_be64(FILTER_TUPLE_V( |
907 | cxgb4_select_ntuple( | |
908 | ep->com.dev->rdev.lldi.ports[0], | |
909 | ep->l2t))); | |
910 | t5req->rsvd = cpu_to_be32(isn); | |
911 | PDBG("%s snd_isn %u\n", __func__, t5req->rsvd); | |
912 | t5req->opt2 = cpu_to_be32(opt2); | |
913 | } | |
914 | } else { | |
915 | switch (CHELSIO_CHIP_VERSION(adapter_type)) { | |
916 | case CHELSIO_T4: | |
830662f6 | 917 | req6 = (struct cpl_act_open_req6 *)skb_put(skb, wrlen); |
830662f6 | 918 | INIT_TP_WR(req6, 0); |
963cab50 H |
919 | break; |
920 | case CHELSIO_T5: | |
921 | t5req6 = (struct cpl_t5_act_open_req6 *)skb_put(skb, | |
922 | wrlen); | |
923 | INIT_TP_WR(t5req6, 0); | |
924 | req6 = (struct cpl_act_open_req6 *)t5req6; | |
925 | break; | |
926 | case CHELSIO_T6: | |
927 | t6req6 = (struct cpl_t6_act_open_req6 *)skb_put(skb, | |
928 | wrlen); | |
929 | INIT_TP_WR(t6req6, 0); | |
930 | req6 = (struct cpl_act_open_req6 *)t6req6; | |
931 | t5req6 = (struct cpl_t5_act_open_req6 *)t6req6; | |
932 | break; | |
933 | default: | |
934 | pr_err("T%d Chip is not supported\n", | |
935 | CHELSIO_CHIP_VERSION(adapter_type)); | |
936 | ret = -EINVAL; | |
937 | goto clip_release; | |
938 | } | |
939 | ||
940 | OPCODE_TID(req6) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6, | |
941 | ((ep->rss_qid<<14)|ep->atid))); | |
942 | req6->local_port = la6->sin6_port; | |
943 | req6->peer_port = ra6->sin6_port; | |
944 | req6->local_ip_hi = *((__be64 *)(la6->sin6_addr.s6_addr)); | |
945 | req6->local_ip_lo = *((__be64 *)(la6->sin6_addr.s6_addr + 8)); | |
946 | req6->peer_ip_hi = *((__be64 *)(ra6->sin6_addr.s6_addr)); | |
947 | req6->peer_ip_lo = *((__be64 *)(ra6->sin6_addr.s6_addr + 8)); | |
948 | req6->opt0 = cpu_to_be64(opt0); | |
949 | ||
950 | if (is_t4(ep->com.dev->rdev.lldi.adapter_type)) { | |
41b4f86c KS |
951 | req6->params = cpu_to_be32(cxgb4_select_ntuple( |
952 | ep->com.dev->rdev.lldi.ports[0], | |
953 | ep->l2t)); | |
830662f6 | 954 | req6->opt2 = cpu_to_be32(opt2); |
830662f6 | 955 | } else { |
963cab50 H |
956 | t5req6->params = cpu_to_be64(FILTER_TUPLE_V( |
957 | cxgb4_select_ntuple( | |
41b4f86c | 958 | ep->com.dev->rdev.lldi.ports[0], |
da22b896 | 959 | ep->l2t))); |
963cab50 H |
960 | t5req6->rsvd = cpu_to_be32(isn); |
961 | PDBG("%s snd_isn %u\n", __func__, t5req6->rsvd); | |
962 | t5req6->opt2 = cpu_to_be32(opt2); | |
830662f6 | 963 | } |
f079af7a VP |
964 | } |
965 | ||
793dad94 | 966 | set_bit(ACT_OPEN_REQ, &ep->com.history); |
84cc6ac6 | 967 | ret = c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); |
963cab50 | 968 | clip_release: |
84cc6ac6 H |
969 | if (ret && ep->com.remote_addr.ss_family == AF_INET6) |
970 | cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0], | |
971 | (const u32 *)&la6->sin6_addr.s6_addr, 1); | |
972 | return ret; | |
cfdda9d7 SW |
973 | } |
974 | ||
caa6c9f2 H |
975 | static int send_mpa_req(struct c4iw_ep *ep, struct sk_buff *skb, |
976 | u8 mpa_rev_to_use) | |
cfdda9d7 | 977 | { |
caa6c9f2 | 978 | int mpalen, wrlen, ret; |
cfdda9d7 SW |
979 | struct fw_ofld_tx_data_wr *req; |
980 | struct mpa_message *mpa; | |
d2fe99e8 | 981 | struct mpa_v2_conn_params mpa_v2_params; |
cfdda9d7 SW |
982 | |
983 | PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen); | |
984 | ||
985 | BUG_ON(skb_cloned(skb)); | |
986 | ||
987 | mpalen = sizeof(*mpa) + ep->plen; | |
d2fe99e8 KS |
988 | if (mpa_rev_to_use == 2) |
989 | mpalen += sizeof(struct mpa_v2_conn_params); | |
cfdda9d7 SW |
990 | wrlen = roundup(mpalen + sizeof *req, 16); |
991 | skb = get_skb(skb, wrlen, GFP_KERNEL); | |
992 | if (!skb) { | |
993 | connect_reply_upcall(ep, -ENOMEM); | |
caa6c9f2 | 994 | return -ENOMEM; |
cfdda9d7 SW |
995 | } |
996 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
997 | ||
998 | req = (struct fw_ofld_tx_data_wr *)skb_put(skb, wrlen); | |
999 | memset(req, 0, wrlen); | |
1000 | req->op_to_immdlen = cpu_to_be32( | |
e2ac9628 HS |
1001 | FW_WR_OP_V(FW_OFLD_TX_DATA_WR) | |
1002 | FW_WR_COMPL_F | | |
1003 | FW_WR_IMMDLEN_V(mpalen)); | |
cfdda9d7 | 1004 | req->flowid_len16 = cpu_to_be32( |
e2ac9628 HS |
1005 | FW_WR_FLOWID_V(ep->hwtid) | |
1006 | FW_WR_LEN16_V(wrlen >> 4)); | |
cfdda9d7 SW |
1007 | req->plen = cpu_to_be32(mpalen); |
1008 | req->tunnel_to_proxy = cpu_to_be32( | |
e2ac9628 HS |
1009 | FW_OFLD_TX_DATA_WR_FLUSH_F | |
1010 | FW_OFLD_TX_DATA_WR_SHOVE_F); | |
cfdda9d7 SW |
1011 | |
1012 | mpa = (struct mpa_message *)(req + 1); | |
1013 | memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key)); | |
3d4e7994 H |
1014 | |
1015 | mpa->flags = 0; | |
1016 | if (crc_enabled) | |
1017 | mpa->flags |= MPA_CRC; | |
1018 | if (markers_enabled) { | |
1019 | mpa->flags |= MPA_MARKERS; | |
1020 | ep->mpa_attr.recv_marker_enabled = 1; | |
1021 | } else { | |
1022 | ep->mpa_attr.recv_marker_enabled = 0; | |
1023 | } | |
1024 | if (mpa_rev_to_use == 2) | |
1025 | mpa->flags |= MPA_ENHANCED_RDMA_CONN; | |
1026 | ||
cfdda9d7 | 1027 | mpa->private_data_size = htons(ep->plen); |
d2fe99e8 | 1028 | mpa->revision = mpa_rev_to_use; |
01b225e1 | 1029 | if (mpa_rev_to_use == 1) { |
d2fe99e8 | 1030 | ep->tried_with_mpa_v1 = 1; |
01b225e1 KS |
1031 | ep->retry_with_mpa_v1 = 0; |
1032 | } | |
d2fe99e8 KS |
1033 | |
1034 | if (mpa_rev_to_use == 2) { | |
f747c34a RD |
1035 | mpa->private_data_size = htons(ntohs(mpa->private_data_size) + |
1036 | sizeof (struct mpa_v2_conn_params)); | |
4c2c5763 HS |
1037 | PDBG("%s initiator ird %u ord %u\n", __func__, ep->ird, |
1038 | ep->ord); | |
d2fe99e8 KS |
1039 | mpa_v2_params.ird = htons((u16)ep->ird); |
1040 | mpa_v2_params.ord = htons((u16)ep->ord); | |
1041 | ||
1042 | if (peer2peer) { | |
1043 | mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); | |
1044 | if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) | |
1045 | mpa_v2_params.ord |= | |
1046 | htons(MPA_V2_RDMA_WRITE_RTR); | |
1047 | else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) | |
1048 | mpa_v2_params.ord |= | |
1049 | htons(MPA_V2_RDMA_READ_RTR); | |
1050 | } | |
1051 | memcpy(mpa->private_data, &mpa_v2_params, | |
1052 | sizeof(struct mpa_v2_conn_params)); | |
cfdda9d7 | 1053 | |
d2fe99e8 KS |
1054 | if (ep->plen) |
1055 | memcpy(mpa->private_data + | |
1056 | sizeof(struct mpa_v2_conn_params), | |
1057 | ep->mpa_pkt + sizeof(*mpa), ep->plen); | |
1058 | } else | |
1059 | if (ep->plen) | |
1060 | memcpy(mpa->private_data, | |
1061 | ep->mpa_pkt + sizeof(*mpa), ep->plen); | |
cfdda9d7 SW |
1062 | |
1063 | /* | |
1064 | * Reference the mpa skb. This ensures the data area | |
1065 | * will remain in memory until the hw acks the tx. | |
1066 | * Function fw4_ack() will deref it. | |
1067 | */ | |
1068 | skb_get(skb); | |
1069 | t4_set_arp_err_handler(skb, NULL, arp_failure_discard); | |
1070 | BUG_ON(ep->mpa_skb); | |
1071 | ep->mpa_skb = skb; | |
caa6c9f2 H |
1072 | ret = c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); |
1073 | if (ret) | |
1074 | return ret; | |
cfdda9d7 | 1075 | start_ep_timer(ep); |
a7db89eb | 1076 | __state_set(&ep->com, MPA_REQ_SENT); |
cfdda9d7 | 1077 | ep->mpa_attr.initiator = 1; |
9c88aa00 | 1078 | ep->snd_seq += mpalen; |
caa6c9f2 | 1079 | return ret; |
cfdda9d7 SW |
1080 | } |
1081 | ||
1082 | static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen) | |
1083 | { | |
1084 | int mpalen, wrlen; | |
1085 | struct fw_ofld_tx_data_wr *req; | |
1086 | struct mpa_message *mpa; | |
1087 | struct sk_buff *skb; | |
d2fe99e8 | 1088 | struct mpa_v2_conn_params mpa_v2_params; |
cfdda9d7 SW |
1089 | |
1090 | PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen); | |
1091 | ||
1092 | mpalen = sizeof(*mpa) + plen; | |
d2fe99e8 KS |
1093 | if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) |
1094 | mpalen += sizeof(struct mpa_v2_conn_params); | |
cfdda9d7 SW |
1095 | wrlen = roundup(mpalen + sizeof *req, 16); |
1096 | ||
1097 | skb = get_skb(NULL, wrlen, GFP_KERNEL); | |
1098 | if (!skb) { | |
1099 | printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__); | |
1100 | return -ENOMEM; | |
1101 | } | |
1102 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
1103 | ||
1104 | req = (struct fw_ofld_tx_data_wr *)skb_put(skb, wrlen); | |
1105 | memset(req, 0, wrlen); | |
1106 | req->op_to_immdlen = cpu_to_be32( | |
e2ac9628 HS |
1107 | FW_WR_OP_V(FW_OFLD_TX_DATA_WR) | |
1108 | FW_WR_COMPL_F | | |
1109 | FW_WR_IMMDLEN_V(mpalen)); | |
cfdda9d7 | 1110 | req->flowid_len16 = cpu_to_be32( |
e2ac9628 HS |
1111 | FW_WR_FLOWID_V(ep->hwtid) | |
1112 | FW_WR_LEN16_V(wrlen >> 4)); | |
cfdda9d7 SW |
1113 | req->plen = cpu_to_be32(mpalen); |
1114 | req->tunnel_to_proxy = cpu_to_be32( | |
e2ac9628 HS |
1115 | FW_OFLD_TX_DATA_WR_FLUSH_F | |
1116 | FW_OFLD_TX_DATA_WR_SHOVE_F); | |
cfdda9d7 SW |
1117 | |
1118 | mpa = (struct mpa_message *)(req + 1); | |
1119 | memset(mpa, 0, sizeof(*mpa)); | |
1120 | memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); | |
1121 | mpa->flags = MPA_REJECT; | |
fe7e0a4d | 1122 | mpa->revision = ep->mpa_attr.version; |
cfdda9d7 | 1123 | mpa->private_data_size = htons(plen); |
d2fe99e8 KS |
1124 | |
1125 | if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { | |
1126 | mpa->flags |= MPA_ENHANCED_RDMA_CONN; | |
f747c34a RD |
1127 | mpa->private_data_size = htons(ntohs(mpa->private_data_size) + |
1128 | sizeof (struct mpa_v2_conn_params)); | |
d2fe99e8 KS |
1129 | mpa_v2_params.ird = htons(((u16)ep->ird) | |
1130 | (peer2peer ? MPA_V2_PEER2PEER_MODEL : | |
1131 | 0)); | |
1132 | mpa_v2_params.ord = htons(((u16)ep->ord) | (peer2peer ? | |
1133 | (p2p_type == | |
1134 | FW_RI_INIT_P2PTYPE_RDMA_WRITE ? | |
1135 | MPA_V2_RDMA_WRITE_RTR : p2p_type == | |
1136 | FW_RI_INIT_P2PTYPE_READ_REQ ? | |
1137 | MPA_V2_RDMA_READ_RTR : 0) : 0)); | |
1138 | memcpy(mpa->private_data, &mpa_v2_params, | |
1139 | sizeof(struct mpa_v2_conn_params)); | |
1140 | ||
1141 | if (ep->plen) | |
1142 | memcpy(mpa->private_data + | |
1143 | sizeof(struct mpa_v2_conn_params), pdata, plen); | |
1144 | } else | |
1145 | if (plen) | |
1146 | memcpy(mpa->private_data, pdata, plen); | |
cfdda9d7 SW |
1147 | |
1148 | /* | |
1149 | * Reference the mpa skb again. This ensures the data area | |
1150 | * will remain in memory until the hw acks the tx. | |
1151 | * Function fw4_ack() will deref it. | |
1152 | */ | |
1153 | skb_get(skb); | |
1154 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
64bec74a | 1155 | t4_set_arp_err_handler(skb, NULL, mpa_start_arp_failure); |
cfdda9d7 SW |
1156 | BUG_ON(ep->mpa_skb); |
1157 | ep->mpa_skb = skb; | |
9c88aa00 | 1158 | ep->snd_seq += mpalen; |
cfdda9d7 SW |
1159 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); |
1160 | } | |
1161 | ||
1162 | static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen) | |
1163 | { | |
1164 | int mpalen, wrlen; | |
1165 | struct fw_ofld_tx_data_wr *req; | |
1166 | struct mpa_message *mpa; | |
1167 | struct sk_buff *skb; | |
d2fe99e8 | 1168 | struct mpa_v2_conn_params mpa_v2_params; |
cfdda9d7 SW |
1169 | |
1170 | PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen); | |
1171 | ||
1172 | mpalen = sizeof(*mpa) + plen; | |
d2fe99e8 KS |
1173 | if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) |
1174 | mpalen += sizeof(struct mpa_v2_conn_params); | |
cfdda9d7 SW |
1175 | wrlen = roundup(mpalen + sizeof *req, 16); |
1176 | ||
1177 | skb = get_skb(NULL, wrlen, GFP_KERNEL); | |
1178 | if (!skb) { | |
1179 | printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__); | |
1180 | return -ENOMEM; | |
1181 | } | |
1182 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
1183 | ||
1184 | req = (struct fw_ofld_tx_data_wr *) skb_put(skb, wrlen); | |
1185 | memset(req, 0, wrlen); | |
1186 | req->op_to_immdlen = cpu_to_be32( | |
e2ac9628 HS |
1187 | FW_WR_OP_V(FW_OFLD_TX_DATA_WR) | |
1188 | FW_WR_COMPL_F | | |
1189 | FW_WR_IMMDLEN_V(mpalen)); | |
cfdda9d7 | 1190 | req->flowid_len16 = cpu_to_be32( |
e2ac9628 HS |
1191 | FW_WR_FLOWID_V(ep->hwtid) | |
1192 | FW_WR_LEN16_V(wrlen >> 4)); | |
cfdda9d7 SW |
1193 | req->plen = cpu_to_be32(mpalen); |
1194 | req->tunnel_to_proxy = cpu_to_be32( | |
e2ac9628 HS |
1195 | FW_OFLD_TX_DATA_WR_FLUSH_F | |
1196 | FW_OFLD_TX_DATA_WR_SHOVE_F); | |
cfdda9d7 SW |
1197 | |
1198 | mpa = (struct mpa_message *)(req + 1); | |
1199 | memset(mpa, 0, sizeof(*mpa)); | |
1200 | memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); | |
3d4e7994 H |
1201 | mpa->flags = 0; |
1202 | if (ep->mpa_attr.crc_enabled) | |
1203 | mpa->flags |= MPA_CRC; | |
1204 | if (ep->mpa_attr.recv_marker_enabled) | |
1205 | mpa->flags |= MPA_MARKERS; | |
d2fe99e8 | 1206 | mpa->revision = ep->mpa_attr.version; |
cfdda9d7 | 1207 | mpa->private_data_size = htons(plen); |
d2fe99e8 KS |
1208 | |
1209 | if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { | |
1210 | mpa->flags |= MPA_ENHANCED_RDMA_CONN; | |
f747c34a RD |
1211 | mpa->private_data_size = htons(ntohs(mpa->private_data_size) + |
1212 | sizeof (struct mpa_v2_conn_params)); | |
d2fe99e8 KS |
1213 | mpa_v2_params.ird = htons((u16)ep->ird); |
1214 | mpa_v2_params.ord = htons((u16)ep->ord); | |
1215 | if (peer2peer && (ep->mpa_attr.p2p_type != | |
1216 | FW_RI_INIT_P2PTYPE_DISABLED)) { | |
1217 | mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); | |
1218 | ||
1219 | if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) | |
1220 | mpa_v2_params.ord |= | |
1221 | htons(MPA_V2_RDMA_WRITE_RTR); | |
1222 | else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) | |
1223 | mpa_v2_params.ord |= | |
1224 | htons(MPA_V2_RDMA_READ_RTR); | |
1225 | } | |
1226 | ||
1227 | memcpy(mpa->private_data, &mpa_v2_params, | |
1228 | sizeof(struct mpa_v2_conn_params)); | |
1229 | ||
1230 | if (ep->plen) | |
1231 | memcpy(mpa->private_data + | |
1232 | sizeof(struct mpa_v2_conn_params), pdata, plen); | |
1233 | } else | |
1234 | if (plen) | |
1235 | memcpy(mpa->private_data, pdata, plen); | |
cfdda9d7 SW |
1236 | |
1237 | /* | |
1238 | * Reference the mpa skb. This ensures the data area | |
1239 | * will remain in memory until the hw acks the tx. | |
1240 | * Function fw4_ack() will deref it. | |
1241 | */ | |
1242 | skb_get(skb); | |
64bec74a | 1243 | t4_set_arp_err_handler(skb, NULL, mpa_start_arp_failure); |
cfdda9d7 | 1244 | ep->mpa_skb = skb; |
a7db89eb | 1245 | __state_set(&ep->com, MPA_REP_SENT); |
9c88aa00 | 1246 | ep->snd_seq += mpalen; |
cfdda9d7 SW |
1247 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); |
1248 | } | |
1249 | ||
1250 | static int act_establish(struct c4iw_dev *dev, struct sk_buff *skb) | |
1251 | { | |
1252 | struct c4iw_ep *ep; | |
1253 | struct cpl_act_establish *req = cplhdr(skb); | |
1254 | unsigned int tid = GET_TID(req); | |
6c53e938 | 1255 | unsigned int atid = TID_TID_G(ntohl(req->tos_atid)); |
cfdda9d7 | 1256 | struct tid_info *t = dev->rdev.lldi.tids; |
fef4422d | 1257 | int ret; |
cfdda9d7 SW |
1258 | |
1259 | ep = lookup_atid(t, atid); | |
1260 | ||
1261 | PDBG("%s ep %p tid %u snd_isn %u rcv_isn %u\n", __func__, ep, tid, | |
1262 | be32_to_cpu(req->snd_isn), be32_to_cpu(req->rcv_isn)); | |
1263 | ||
a7db89eb | 1264 | mutex_lock(&ep->com.mutex); |
cfdda9d7 SW |
1265 | dst_confirm(ep->dst); |
1266 | ||
1267 | /* setup the hwtid for this connection */ | |
1268 | ep->hwtid = tid; | |
1269 | cxgb4_insert_tid(t, ep, tid); | |
944661dd | 1270 | insert_ep_tid(ep); |
cfdda9d7 SW |
1271 | |
1272 | ep->snd_seq = be32_to_cpu(req->snd_isn); | |
1273 | ep->rcv_seq = be32_to_cpu(req->rcv_isn); | |
1274 | ||
1275 | set_emss(ep, ntohs(req->tcp_opt)); | |
1276 | ||
1277 | /* dealloc the atid */ | |
793dad94 | 1278 | remove_handle(ep->com.dev, &ep->com.dev->atid_idr, atid); |
cfdda9d7 | 1279 | cxgb4_free_atid(t, atid); |
793dad94 | 1280 | set_bit(ACT_ESTAB, &ep->com.history); |
cfdda9d7 SW |
1281 | |
1282 | /* start MPA negotiation */ | |
4a740838 | 1283 | ret = send_flowc(ep); |
fef4422d H |
1284 | if (ret) |
1285 | goto err; | |
d2fe99e8 | 1286 | if (ep->retry_with_mpa_v1) |
caa6c9f2 | 1287 | ret = send_mpa_req(ep, skb, 1); |
d2fe99e8 | 1288 | else |
caa6c9f2 H |
1289 | ret = send_mpa_req(ep, skb, mpa_rev); |
1290 | if (ret) | |
1291 | goto err; | |
a7db89eb | 1292 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 | 1293 | return 0; |
fef4422d H |
1294 | err: |
1295 | mutex_unlock(&ep->com.mutex); | |
1296 | connect_reply_upcall(ep, -ENOMEM); | |
1297 | c4iw_ep_disconnect(ep, 0, GFP_KERNEL); | |
1298 | return 0; | |
cfdda9d7 SW |
1299 | } |
1300 | ||
be13b2df | 1301 | static void close_complete_upcall(struct c4iw_ep *ep, int status) |
cfdda9d7 SW |
1302 | { |
1303 | struct iw_cm_event event; | |
1304 | ||
1305 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1306 | memset(&event, 0, sizeof(event)); | |
1307 | event.event = IW_CM_EVENT_CLOSE; | |
be13b2df | 1308 | event.status = status; |
cfdda9d7 SW |
1309 | if (ep->com.cm_id) { |
1310 | PDBG("close complete delivered ep %p cm_id %p tid %u\n", | |
1311 | ep, ep->com.cm_id, ep->hwtid); | |
1312 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); | |
9ca6f7cf | 1313 | deref_cm_id(&ep->com); |
793dad94 | 1314 | set_bit(CLOSE_UPCALL, &ep->com.history); |
cfdda9d7 SW |
1315 | } |
1316 | } | |
1317 | ||
cfdda9d7 SW |
1318 | static void peer_close_upcall(struct c4iw_ep *ep) |
1319 | { | |
1320 | struct iw_cm_event event; | |
1321 | ||
1322 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1323 | memset(&event, 0, sizeof(event)); | |
1324 | event.event = IW_CM_EVENT_DISCONNECT; | |
1325 | if (ep->com.cm_id) { | |
1326 | PDBG("peer close delivered ep %p cm_id %p tid %u\n", | |
1327 | ep, ep->com.cm_id, ep->hwtid); | |
1328 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); | |
793dad94 | 1329 | set_bit(DISCONN_UPCALL, &ep->com.history); |
cfdda9d7 SW |
1330 | } |
1331 | } | |
1332 | ||
1333 | static void peer_abort_upcall(struct c4iw_ep *ep) | |
1334 | { | |
1335 | struct iw_cm_event event; | |
1336 | ||
1337 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1338 | memset(&event, 0, sizeof(event)); | |
1339 | event.event = IW_CM_EVENT_CLOSE; | |
1340 | event.status = -ECONNRESET; | |
1341 | if (ep->com.cm_id) { | |
1342 | PDBG("abort delivered ep %p cm_id %p tid %u\n", ep, | |
1343 | ep->com.cm_id, ep->hwtid); | |
1344 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); | |
9ca6f7cf | 1345 | deref_cm_id(&ep->com); |
793dad94 | 1346 | set_bit(ABORT_UPCALL, &ep->com.history); |
cfdda9d7 SW |
1347 | } |
1348 | } | |
1349 | ||
1350 | static void connect_reply_upcall(struct c4iw_ep *ep, int status) | |
1351 | { | |
1352 | struct iw_cm_event event; | |
1353 | ||
1354 | PDBG("%s ep %p tid %u status %d\n", __func__, ep, ep->hwtid, status); | |
1355 | memset(&event, 0, sizeof(event)); | |
1356 | event.event = IW_CM_EVENT_CONNECT_REPLY; | |
1357 | event.status = status; | |
24d44a39 SW |
1358 | memcpy(&event.local_addr, &ep->com.local_addr, |
1359 | sizeof(ep->com.local_addr)); | |
1360 | memcpy(&event.remote_addr, &ep->com.remote_addr, | |
1361 | sizeof(ep->com.remote_addr)); | |
cfdda9d7 SW |
1362 | |
1363 | if ((status == 0) || (status == -ECONNREFUSED)) { | |
d2fe99e8 KS |
1364 | if (!ep->tried_with_mpa_v1) { |
1365 | /* this means MPA_v2 is used */ | |
158c776d H |
1366 | event.ord = ep->ird; |
1367 | event.ird = ep->ord; | |
d2fe99e8 KS |
1368 | event.private_data_len = ep->plen - |
1369 | sizeof(struct mpa_v2_conn_params); | |
1370 | event.private_data = ep->mpa_pkt + | |
1371 | sizeof(struct mpa_message) + | |
1372 | sizeof(struct mpa_v2_conn_params); | |
1373 | } else { | |
1374 | /* this means MPA_v1 is used */ | |
158c776d H |
1375 | event.ord = cur_max_read_depth(ep->com.dev); |
1376 | event.ird = cur_max_read_depth(ep->com.dev); | |
d2fe99e8 KS |
1377 | event.private_data_len = ep->plen; |
1378 | event.private_data = ep->mpa_pkt + | |
1379 | sizeof(struct mpa_message); | |
1380 | } | |
cfdda9d7 | 1381 | } |
85963e4c RD |
1382 | |
1383 | PDBG("%s ep %p tid %u status %d\n", __func__, ep, | |
1384 | ep->hwtid, status); | |
793dad94 | 1385 | set_bit(CONN_RPL_UPCALL, &ep->com.history); |
85963e4c RD |
1386 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); |
1387 | ||
9ca6f7cf H |
1388 | if (status < 0) |
1389 | deref_cm_id(&ep->com); | |
cfdda9d7 SW |
1390 | } |
1391 | ||
be13b2df | 1392 | static int connect_request_upcall(struct c4iw_ep *ep) |
cfdda9d7 SW |
1393 | { |
1394 | struct iw_cm_event event; | |
be13b2df | 1395 | int ret; |
cfdda9d7 SW |
1396 | |
1397 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1398 | memset(&event, 0, sizeof(event)); | |
1399 | event.event = IW_CM_EVENT_CONNECT_REQUEST; | |
24d44a39 SW |
1400 | memcpy(&event.local_addr, &ep->com.local_addr, |
1401 | sizeof(ep->com.local_addr)); | |
1402 | memcpy(&event.remote_addr, &ep->com.remote_addr, | |
1403 | sizeof(ep->com.remote_addr)); | |
cfdda9d7 | 1404 | event.provider_data = ep; |
d2fe99e8 KS |
1405 | if (!ep->tried_with_mpa_v1) { |
1406 | /* this means MPA_v2 is used */ | |
1407 | event.ord = ep->ord; | |
1408 | event.ird = ep->ird; | |
1409 | event.private_data_len = ep->plen - | |
1410 | sizeof(struct mpa_v2_conn_params); | |
1411 | event.private_data = ep->mpa_pkt + sizeof(struct mpa_message) + | |
1412 | sizeof(struct mpa_v2_conn_params); | |
1413 | } else { | |
1414 | /* this means MPA_v1 is used. Send max supported */ | |
4c2c5763 HS |
1415 | event.ord = cur_max_read_depth(ep->com.dev); |
1416 | event.ird = cur_max_read_depth(ep->com.dev); | |
d2fe99e8 KS |
1417 | event.private_data_len = ep->plen; |
1418 | event.private_data = ep->mpa_pkt + sizeof(struct mpa_message); | |
1419 | } | |
be13b2df SW |
1420 | c4iw_get_ep(&ep->com); |
1421 | ret = ep->parent_ep->com.cm_id->event_handler(ep->parent_ep->com.cm_id, | |
1422 | &event); | |
1423 | if (ret) | |
1424 | c4iw_put_ep(&ep->com); | |
793dad94 | 1425 | set_bit(CONNREQ_UPCALL, &ep->com.history); |
cfdda9d7 | 1426 | c4iw_put_ep(&ep->parent_ep->com); |
be13b2df | 1427 | return ret; |
cfdda9d7 SW |
1428 | } |
1429 | ||
1430 | static void established_upcall(struct c4iw_ep *ep) | |
1431 | { | |
1432 | struct iw_cm_event event; | |
1433 | ||
1434 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1435 | memset(&event, 0, sizeof(event)); | |
1436 | event.event = IW_CM_EVENT_ESTABLISHED; | |
3dd9a5dc H |
1437 | event.ird = ep->ord; |
1438 | event.ord = ep->ird; | |
cfdda9d7 SW |
1439 | if (ep->com.cm_id) { |
1440 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1441 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); | |
793dad94 | 1442 | set_bit(ESTAB_UPCALL, &ep->com.history); |
cfdda9d7 SW |
1443 | } |
1444 | } | |
1445 | ||
1446 | static int update_rx_credits(struct c4iw_ep *ep, u32 credits) | |
1447 | { | |
1448 | struct cpl_rx_data_ack *req; | |
1449 | struct sk_buff *skb; | |
1450 | int wrlen = roundup(sizeof *req, 16); | |
1451 | ||
1452 | PDBG("%s ep %p tid %u credits %u\n", __func__, ep, ep->hwtid, credits); | |
1453 | skb = get_skb(NULL, wrlen, GFP_KERNEL); | |
1454 | if (!skb) { | |
1455 | printk(KERN_ERR MOD "update_rx_credits - cannot alloc skb!\n"); | |
1456 | return 0; | |
1457 | } | |
1458 | ||
b408ff28 HS |
1459 | /* |
1460 | * If we couldn't specify the entire rcv window at connection setup | |
1461 | * due to the limit in the number of bits in the RCV_BUFSIZ field, | |
1462 | * then add the overage in to the credits returned. | |
1463 | */ | |
d7990b0c AB |
1464 | if (ep->rcv_win > RCV_BUFSIZ_M * 1024) |
1465 | credits += ep->rcv_win - RCV_BUFSIZ_M * 1024; | |
b408ff28 | 1466 | |
cfdda9d7 SW |
1467 | req = (struct cpl_rx_data_ack *) skb_put(skb, wrlen); |
1468 | memset(req, 0, wrlen); | |
1469 | INIT_TP_WR(req, ep->hwtid); | |
1470 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_RX_DATA_ACK, | |
1471 | ep->hwtid)); | |
d7990b0c | 1472 | req->credit_dack = cpu_to_be32(credits | RX_FORCE_ACK_F | |
cf7fe64a HS |
1473 | RX_DACK_CHANGE_F | |
1474 | RX_DACK_MODE_V(dack_mode)); | |
d4f1a5c6 | 1475 | set_wr_txq(skb, CPL_PRIORITY_ACK, ep->ctrlq_idx); |
cfdda9d7 SW |
1476 | c4iw_ofld_send(&ep->com.dev->rdev, skb); |
1477 | return credits; | |
1478 | } | |
1479 | ||
4c2c5763 HS |
1480 | #define RELAXED_IRD_NEGOTIATION 1 |
1481 | ||
f8e1e1d1 H |
1482 | /* |
1483 | * process_mpa_reply - process streaming mode MPA reply | |
1484 | * | |
1485 | * Returns: | |
1486 | * | |
1487 | * 0 upon success indicating a connect request was delivered to the ULP | |
1488 | * or the mpa request is incomplete but valid so far. | |
1489 | * | |
1490 | * 1 if a failure requires the caller to close the connection. | |
1491 | * | |
1492 | * 2 if a failure requires the caller to abort the connection. | |
1493 | */ | |
cc18b939 | 1494 | static int process_mpa_reply(struct c4iw_ep *ep, struct sk_buff *skb) |
cfdda9d7 SW |
1495 | { |
1496 | struct mpa_message *mpa; | |
d2fe99e8 | 1497 | struct mpa_v2_conn_params *mpa_v2_params; |
cfdda9d7 | 1498 | u16 plen; |
d2fe99e8 KS |
1499 | u16 resp_ird, resp_ord; |
1500 | u8 rtr_mismatch = 0, insuff_ird = 0; | |
cfdda9d7 SW |
1501 | struct c4iw_qp_attributes attrs; |
1502 | enum c4iw_qp_attr_mask mask; | |
1503 | int err; | |
cc18b939 | 1504 | int disconnect = 0; |
cfdda9d7 SW |
1505 | |
1506 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1507 | ||
cfdda9d7 SW |
1508 | /* |
1509 | * If we get more than the supported amount of private data | |
1510 | * then we must fail this connection. | |
1511 | */ | |
1512 | if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) { | |
1513 | err = -EINVAL; | |
da1cecdf | 1514 | goto err_stop_timer; |
cfdda9d7 SW |
1515 | } |
1516 | ||
1517 | /* | |
1518 | * copy the new data into our accumulation buffer. | |
1519 | */ | |
1520 | skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]), | |
1521 | skb->len); | |
1522 | ep->mpa_pkt_len += skb->len; | |
1523 | ||
1524 | /* | |
1525 | * if we don't even have the mpa message, then bail. | |
1526 | */ | |
1527 | if (ep->mpa_pkt_len < sizeof(*mpa)) | |
cc18b939 | 1528 | return 0; |
cfdda9d7 SW |
1529 | mpa = (struct mpa_message *) ep->mpa_pkt; |
1530 | ||
1531 | /* Validate MPA header. */ | |
d2fe99e8 KS |
1532 | if (mpa->revision > mpa_rev) { |
1533 | printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d," | |
1534 | " Received = %d\n", __func__, mpa_rev, mpa->revision); | |
cfdda9d7 | 1535 | err = -EPROTO; |
da1cecdf | 1536 | goto err_stop_timer; |
cfdda9d7 SW |
1537 | } |
1538 | if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) { | |
1539 | err = -EPROTO; | |
da1cecdf | 1540 | goto err_stop_timer; |
cfdda9d7 SW |
1541 | } |
1542 | ||
1543 | plen = ntohs(mpa->private_data_size); | |
1544 | ||
1545 | /* | |
1546 | * Fail if there's too much private data. | |
1547 | */ | |
1548 | if (plen > MPA_MAX_PRIVATE_DATA) { | |
1549 | err = -EPROTO; | |
da1cecdf | 1550 | goto err_stop_timer; |
cfdda9d7 SW |
1551 | } |
1552 | ||
1553 | /* | |
1554 | * If plen does not account for pkt size | |
1555 | */ | |
1556 | if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { | |
1557 | err = -EPROTO; | |
da1cecdf | 1558 | goto err_stop_timer; |
cfdda9d7 SW |
1559 | } |
1560 | ||
1561 | ep->plen = (u8) plen; | |
1562 | ||
1563 | /* | |
1564 | * If we don't have all the pdata yet, then bail. | |
1565 | * We'll continue process when more data arrives. | |
1566 | */ | |
1567 | if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) | |
cc18b939 | 1568 | return 0; |
cfdda9d7 SW |
1569 | |
1570 | if (mpa->flags & MPA_REJECT) { | |
1571 | err = -ECONNREFUSED; | |
da1cecdf | 1572 | goto err_stop_timer; |
cfdda9d7 SW |
1573 | } |
1574 | ||
da1cecdf H |
1575 | /* |
1576 | * Stop mpa timer. If it expired, then | |
1577 | * we ignore the MPA reply. process_timeout() | |
1578 | * will abort the connection. | |
1579 | */ | |
1580 | if (stop_ep_timer(ep)) | |
1581 | return 0; | |
1582 | ||
cfdda9d7 SW |
1583 | /* |
1584 | * If we get here we have accumulated the entire mpa | |
1585 | * start reply message including private data. And | |
1586 | * the MPA header is valid. | |
1587 | */ | |
c529fb50 | 1588 | __state_set(&ep->com, FPDU_MODE); |
cfdda9d7 | 1589 | ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; |
cfdda9d7 | 1590 | ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; |
d2fe99e8 KS |
1591 | ep->mpa_attr.version = mpa->revision; |
1592 | ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; | |
1593 | ||
1594 | if (mpa->revision == 2) { | |
1595 | ep->mpa_attr.enhanced_rdma_conn = | |
1596 | mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; | |
1597 | if (ep->mpa_attr.enhanced_rdma_conn) { | |
1598 | mpa_v2_params = (struct mpa_v2_conn_params *) | |
1599 | (ep->mpa_pkt + sizeof(*mpa)); | |
1600 | resp_ird = ntohs(mpa_v2_params->ird) & | |
1601 | MPA_V2_IRD_ORD_MASK; | |
1602 | resp_ord = ntohs(mpa_v2_params->ord) & | |
1603 | MPA_V2_IRD_ORD_MASK; | |
4c2c5763 HS |
1604 | PDBG("%s responder ird %u ord %u ep ird %u ord %u\n", |
1605 | __func__, resp_ird, resp_ord, ep->ird, ep->ord); | |
d2fe99e8 KS |
1606 | |
1607 | /* | |
1608 | * This is a double-check. Ideally, below checks are | |
1609 | * not required since ird/ord stuff has been taken | |
1610 | * care of in c4iw_accept_cr | |
1611 | */ | |
4c2c5763 HS |
1612 | if (ep->ird < resp_ord) { |
1613 | if (RELAXED_IRD_NEGOTIATION && resp_ord <= | |
1614 | ep->com.dev->rdev.lldi.max_ordird_qp) | |
1615 | ep->ird = resp_ord; | |
1616 | else | |
1617 | insuff_ird = 1; | |
1618 | } else if (ep->ird > resp_ord) { | |
1619 | ep->ird = resp_ord; | |
1620 | } | |
1621 | if (ep->ord > resp_ird) { | |
1622 | if (RELAXED_IRD_NEGOTIATION) | |
1623 | ep->ord = resp_ird; | |
1624 | else | |
1625 | insuff_ird = 1; | |
1626 | } | |
1627 | if (insuff_ird) { | |
d2fe99e8 KS |
1628 | err = -ENOMEM; |
1629 | ep->ird = resp_ord; | |
1630 | ep->ord = resp_ird; | |
d2fe99e8 KS |
1631 | } |
1632 | ||
1633 | if (ntohs(mpa_v2_params->ird) & | |
1634 | MPA_V2_PEER2PEER_MODEL) { | |
1635 | if (ntohs(mpa_v2_params->ord) & | |
1636 | MPA_V2_RDMA_WRITE_RTR) | |
1637 | ep->mpa_attr.p2p_type = | |
1638 | FW_RI_INIT_P2PTYPE_RDMA_WRITE; | |
1639 | else if (ntohs(mpa_v2_params->ord) & | |
1640 | MPA_V2_RDMA_READ_RTR) | |
1641 | ep->mpa_attr.p2p_type = | |
1642 | FW_RI_INIT_P2PTYPE_READ_REQ; | |
1643 | } | |
1644 | } | |
1645 | } else if (mpa->revision == 1) | |
1646 | if (peer2peer) | |
1647 | ep->mpa_attr.p2p_type = p2p_type; | |
1648 | ||
cfdda9d7 | 1649 | PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, " |
d2fe99e8 KS |
1650 | "xmit_marker_enabled=%d, version=%d p2p_type=%d local-p2p_type = " |
1651 | "%d\n", __func__, ep->mpa_attr.crc_enabled, | |
1652 | ep->mpa_attr.recv_marker_enabled, | |
1653 | ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version, | |
1654 | ep->mpa_attr.p2p_type, p2p_type); | |
1655 | ||
1656 | /* | |
1657 | * If responder's RTR does not match with that of initiator, assign | |
1658 | * FW_RI_INIT_P2PTYPE_DISABLED in mpa attributes so that RTR is not | |
1659 | * generated when moving QP to RTS state. | |
1660 | * A TERM message will be sent after QP has moved to RTS state | |
1661 | */ | |
91018f86 | 1662 | if ((ep->mpa_attr.version == 2) && peer2peer && |
d2fe99e8 KS |
1663 | (ep->mpa_attr.p2p_type != p2p_type)) { |
1664 | ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; | |
1665 | rtr_mismatch = 1; | |
1666 | } | |
cfdda9d7 SW |
1667 | |
1668 | attrs.mpa_attr = ep->mpa_attr; | |
1669 | attrs.max_ird = ep->ird; | |
1670 | attrs.max_ord = ep->ord; | |
1671 | attrs.llp_stream_handle = ep; | |
1672 | attrs.next_state = C4IW_QP_STATE_RTS; | |
1673 | ||
1674 | mask = C4IW_QP_ATTR_NEXT_STATE | | |
1675 | C4IW_QP_ATTR_LLP_STREAM_HANDLE | C4IW_QP_ATTR_MPA_ATTR | | |
1676 | C4IW_QP_ATTR_MAX_IRD | C4IW_QP_ATTR_MAX_ORD; | |
1677 | ||
1678 | /* bind QP and TID with INIT_WR */ | |
1679 | err = c4iw_modify_qp(ep->com.qp->rhp, | |
1680 | ep->com.qp, mask, &attrs, 1); | |
1681 | if (err) | |
1682 | goto err; | |
d2fe99e8 KS |
1683 | |
1684 | /* | |
1685 | * If responder's RTR requirement did not match with what initiator | |
1686 | * supports, generate TERM message | |
1687 | */ | |
1688 | if (rtr_mismatch) { | |
1689 | printk(KERN_ERR "%s: RTR mismatch, sending TERM\n", __func__); | |
1690 | attrs.layer_etype = LAYER_MPA | DDP_LLP; | |
1691 | attrs.ecode = MPA_NOMATCH_RTR; | |
1692 | attrs.next_state = C4IW_QP_STATE_TERMINATE; | |
cc18b939 | 1693 | attrs.send_term = 1; |
d2fe99e8 | 1694 | err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, |
cc18b939 | 1695 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); |
d2fe99e8 | 1696 | err = -ENOMEM; |
cc18b939 | 1697 | disconnect = 1; |
d2fe99e8 KS |
1698 | goto out; |
1699 | } | |
1700 | ||
1701 | /* | |
1702 | * Generate TERM if initiator IRD is not sufficient for responder | |
1703 | * provided ORD. Currently, we do the same behaviour even when | |
1704 | * responder provided IRD is also not sufficient as regards to | |
1705 | * initiator ORD. | |
1706 | */ | |
1707 | if (insuff_ird) { | |
1708 | printk(KERN_ERR "%s: Insufficient IRD, sending TERM\n", | |
1709 | __func__); | |
1710 | attrs.layer_etype = LAYER_MPA | DDP_LLP; | |
1711 | attrs.ecode = MPA_INSUFF_IRD; | |
1712 | attrs.next_state = C4IW_QP_STATE_TERMINATE; | |
cc18b939 | 1713 | attrs.send_term = 1; |
d2fe99e8 | 1714 | err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, |
cc18b939 | 1715 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); |
d2fe99e8 | 1716 | err = -ENOMEM; |
cc18b939 | 1717 | disconnect = 1; |
d2fe99e8 KS |
1718 | goto out; |
1719 | } | |
cfdda9d7 | 1720 | goto out; |
da1cecdf H |
1721 | err_stop_timer: |
1722 | stop_ep_timer(ep); | |
cfdda9d7 | 1723 | err: |
f8e1e1d1 | 1724 | disconnect = 2; |
cfdda9d7 SW |
1725 | out: |
1726 | connect_reply_upcall(ep, err); | |
cc18b939 | 1727 | return disconnect; |
cfdda9d7 SW |
1728 | } |
1729 | ||
fd6aabe4 H |
1730 | /* |
1731 | * process_mpa_request - process streaming mode MPA request | |
1732 | * | |
1733 | * Returns: | |
1734 | * | |
1735 | * 0 upon success indicating a connect request was delivered to the ULP | |
1736 | * or the mpa request is incomplete but valid so far. | |
1737 | * | |
1738 | * 1 if a failure requires the caller to close the connection. | |
1739 | * | |
1740 | * 2 if a failure requires the caller to abort the connection. | |
1741 | */ | |
1742 | static int process_mpa_request(struct c4iw_ep *ep, struct sk_buff *skb) | |
cfdda9d7 SW |
1743 | { |
1744 | struct mpa_message *mpa; | |
d2fe99e8 | 1745 | struct mpa_v2_conn_params *mpa_v2_params; |
cfdda9d7 SW |
1746 | u16 plen; |
1747 | ||
1748 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1749 | ||
cfdda9d7 SW |
1750 | /* |
1751 | * If we get more than the supported amount of private data | |
1752 | * then we must fail this connection. | |
1753 | */ | |
fd6aabe4 H |
1754 | if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) |
1755 | goto err_stop_timer; | |
cfdda9d7 SW |
1756 | |
1757 | PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__); | |
1758 | ||
1759 | /* | |
1760 | * Copy the new data into our accumulation buffer. | |
1761 | */ | |
1762 | skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]), | |
1763 | skb->len); | |
1764 | ep->mpa_pkt_len += skb->len; | |
1765 | ||
1766 | /* | |
1767 | * If we don't even have the mpa message, then bail. | |
1768 | * We'll continue process when more data arrives. | |
1769 | */ | |
1770 | if (ep->mpa_pkt_len < sizeof(*mpa)) | |
fd6aabe4 | 1771 | return 0; |
cfdda9d7 SW |
1772 | |
1773 | PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__); | |
cfdda9d7 SW |
1774 | mpa = (struct mpa_message *) ep->mpa_pkt; |
1775 | ||
1776 | /* | |
1777 | * Validate MPA Header. | |
1778 | */ | |
d2fe99e8 KS |
1779 | if (mpa->revision > mpa_rev) { |
1780 | printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d," | |
1781 | " Received = %d\n", __func__, mpa_rev, mpa->revision); | |
fd6aabe4 | 1782 | goto err_stop_timer; |
cfdda9d7 SW |
1783 | } |
1784 | ||
fd6aabe4 H |
1785 | if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key))) |
1786 | goto err_stop_timer; | |
cfdda9d7 SW |
1787 | |
1788 | plen = ntohs(mpa->private_data_size); | |
1789 | ||
1790 | /* | |
1791 | * Fail if there's too much private data. | |
1792 | */ | |
fd6aabe4 H |
1793 | if (plen > MPA_MAX_PRIVATE_DATA) |
1794 | goto err_stop_timer; | |
cfdda9d7 SW |
1795 | |
1796 | /* | |
1797 | * If plen does not account for pkt size | |
1798 | */ | |
fd6aabe4 H |
1799 | if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) |
1800 | goto err_stop_timer; | |
cfdda9d7 SW |
1801 | ep->plen = (u8) plen; |
1802 | ||
1803 | /* | |
1804 | * If we don't have all the pdata yet, then bail. | |
1805 | */ | |
1806 | if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) | |
fd6aabe4 | 1807 | return 0; |
cfdda9d7 SW |
1808 | |
1809 | /* | |
1810 | * If we get here we have accumulated the entire mpa | |
1811 | * start reply message including private data. | |
1812 | */ | |
1813 | ep->mpa_attr.initiator = 0; | |
1814 | ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; | |
1815 | ep->mpa_attr.recv_marker_enabled = markers_enabled; | |
1816 | ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; | |
d2fe99e8 KS |
1817 | ep->mpa_attr.version = mpa->revision; |
1818 | if (mpa->revision == 1) | |
1819 | ep->tried_with_mpa_v1 = 1; | |
1820 | ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; | |
1821 | ||
1822 | if (mpa->revision == 2) { | |
1823 | ep->mpa_attr.enhanced_rdma_conn = | |
1824 | mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; | |
1825 | if (ep->mpa_attr.enhanced_rdma_conn) { | |
1826 | mpa_v2_params = (struct mpa_v2_conn_params *) | |
1827 | (ep->mpa_pkt + sizeof(*mpa)); | |
1828 | ep->ird = ntohs(mpa_v2_params->ird) & | |
1829 | MPA_V2_IRD_ORD_MASK; | |
1830 | ep->ord = ntohs(mpa_v2_params->ord) & | |
1831 | MPA_V2_IRD_ORD_MASK; | |
4c2c5763 HS |
1832 | PDBG("%s initiator ird %u ord %u\n", __func__, ep->ird, |
1833 | ep->ord); | |
d2fe99e8 KS |
1834 | if (ntohs(mpa_v2_params->ird) & MPA_V2_PEER2PEER_MODEL) |
1835 | if (peer2peer) { | |
1836 | if (ntohs(mpa_v2_params->ord) & | |
1837 | MPA_V2_RDMA_WRITE_RTR) | |
1838 | ep->mpa_attr.p2p_type = | |
1839 | FW_RI_INIT_P2PTYPE_RDMA_WRITE; | |
1840 | else if (ntohs(mpa_v2_params->ord) & | |
1841 | MPA_V2_RDMA_READ_RTR) | |
1842 | ep->mpa_attr.p2p_type = | |
1843 | FW_RI_INIT_P2PTYPE_READ_REQ; | |
1844 | } | |
1845 | } | |
1846 | } else if (mpa->revision == 1) | |
1847 | if (peer2peer) | |
1848 | ep->mpa_attr.p2p_type = p2p_type; | |
1849 | ||
cfdda9d7 SW |
1850 | PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, " |
1851 | "xmit_marker_enabled=%d, version=%d p2p_type=%d\n", __func__, | |
1852 | ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, | |
1853 | ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version, | |
1854 | ep->mpa_attr.p2p_type); | |
1855 | ||
e4b76a2a H |
1856 | __state_set(&ep->com, MPA_REQ_RCVD); |
1857 | ||
1858 | /* drive upcall */ | |
1859 | mutex_lock_nested(&ep->parent_ep->com.mutex, SINGLE_DEPTH_NESTING); | |
1860 | if (ep->parent_ep->com.state != DEAD) { | |
1861 | if (connect_request_upcall(ep)) | |
fd6aabe4 | 1862 | goto err_unlock_parent; |
e4b76a2a H |
1863 | } else { |
1864 | goto err_unlock_parent; | |
be13b2df | 1865 | } |
e4b76a2a | 1866 | mutex_unlock(&ep->parent_ep->com.mutex); |
fd6aabe4 H |
1867 | return 0; |
1868 | ||
1869 | err_unlock_parent: | |
1870 | mutex_unlock(&ep->parent_ep->com.mutex); | |
1871 | goto err_out; | |
1872 | err_stop_timer: | |
1873 | (void)stop_ep_timer(ep); | |
1874 | err_out: | |
1875 | return 2; | |
cfdda9d7 SW |
1876 | } |
1877 | ||
1878 | static int rx_data(struct c4iw_dev *dev, struct sk_buff *skb) | |
1879 | { | |
1880 | struct c4iw_ep *ep; | |
1881 | struct cpl_rx_data *hdr = cplhdr(skb); | |
1882 | unsigned int dlen = ntohs(hdr->len); | |
1883 | unsigned int tid = GET_TID(hdr); | |
793dad94 | 1884 | __u8 status = hdr->status; |
cc18b939 | 1885 | int disconnect = 0; |
cfdda9d7 | 1886 | |
944661dd | 1887 | ep = get_ep_from_tid(dev, tid); |
977116c6 SW |
1888 | if (!ep) |
1889 | return 0; | |
cfdda9d7 SW |
1890 | PDBG("%s ep %p tid %u dlen %u\n", __func__, ep, ep->hwtid, dlen); |
1891 | skb_pull(skb, sizeof(*hdr)); | |
1892 | skb_trim(skb, dlen); | |
c529fb50 | 1893 | mutex_lock(&ep->com.mutex); |
cfdda9d7 | 1894 | |
cfdda9d7 SW |
1895 | /* update RX credits */ |
1896 | update_rx_credits(ep, dlen); | |
1897 | ||
c529fb50 | 1898 | switch (ep->com.state) { |
cfdda9d7 | 1899 | case MPA_REQ_SENT: |
55abf8df | 1900 | ep->rcv_seq += dlen; |
cc18b939 | 1901 | disconnect = process_mpa_reply(ep, skb); |
cfdda9d7 SW |
1902 | break; |
1903 | case MPA_REQ_WAIT: | |
55abf8df | 1904 | ep->rcv_seq += dlen; |
4a4dd8db | 1905 | disconnect = process_mpa_request(ep, skb); |
cfdda9d7 | 1906 | break; |
1557967b VP |
1907 | case FPDU_MODE: { |
1908 | struct c4iw_qp_attributes attrs; | |
1909 | BUG_ON(!ep->com.qp); | |
e8e5b927 | 1910 | if (status) |
1557967b | 1911 | pr_err("%s Unexpected streaming data." \ |
04236df2 VP |
1912 | " qpid %u ep %p state %d tid %u status %d\n", |
1913 | __func__, ep->com.qp->wq.sq.qid, ep, | |
c529fb50 | 1914 | ep->com.state, ep->hwtid, status); |
97d7ec0c | 1915 | attrs.next_state = C4IW_QP_STATE_TERMINATE; |
1557967b | 1916 | c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, |
cc18b939 SW |
1917 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); |
1918 | disconnect = 1; | |
cfdda9d7 SW |
1919 | break; |
1920 | } | |
1557967b VP |
1921 | default: |
1922 | break; | |
1923 | } | |
c529fb50 | 1924 | mutex_unlock(&ep->com.mutex); |
cc18b939 | 1925 | if (disconnect) |
4a4dd8db | 1926 | c4iw_ep_disconnect(ep, disconnect == 2, GFP_KERNEL); |
944661dd | 1927 | c4iw_put_ep(&ep->com); |
cfdda9d7 SW |
1928 | return 0; |
1929 | } | |
1930 | ||
1931 | static int abort_rpl(struct c4iw_dev *dev, struct sk_buff *skb) | |
1932 | { | |
1933 | struct c4iw_ep *ep; | |
1934 | struct cpl_abort_rpl_rss *rpl = cplhdr(skb); | |
cfdda9d7 SW |
1935 | int release = 0; |
1936 | unsigned int tid = GET_TID(rpl); | |
cfdda9d7 | 1937 | |
944661dd | 1938 | ep = get_ep_from_tid(dev, tid); |
4984037b VP |
1939 | if (!ep) { |
1940 | printk(KERN_WARNING MOD "Abort rpl to freed endpoint\n"); | |
1941 | return 0; | |
1942 | } | |
92dd6c3d | 1943 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
2f5b48c3 | 1944 | mutex_lock(&ep->com.mutex); |
cfdda9d7 SW |
1945 | switch (ep->com.state) { |
1946 | case ABORTING: | |
91e9c071 | 1947 | c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); |
cfdda9d7 SW |
1948 | __state_set(&ep->com, DEAD); |
1949 | release = 1; | |
1950 | break; | |
1951 | default: | |
1952 | printk(KERN_ERR "%s ep %p state %d\n", | |
1953 | __func__, ep, ep->com.state); | |
1954 | break; | |
1955 | } | |
2f5b48c3 | 1956 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
1957 | |
1958 | if (release) | |
1959 | release_ep_resources(ep); | |
944661dd | 1960 | c4iw_put_ep(&ep->com); |
cfdda9d7 SW |
1961 | return 0; |
1962 | } | |
1963 | ||
caa6c9f2 | 1964 | static int send_fw_act_open_req(struct c4iw_ep *ep, unsigned int atid) |
5be78ee9 VP |
1965 | { |
1966 | struct sk_buff *skb; | |
1967 | struct fw_ofld_connection_wr *req; | |
1968 | unsigned int mtu_idx; | |
1969 | int wscale; | |
830662f6 | 1970 | struct sockaddr_in *sin; |
b408ff28 | 1971 | int win; |
5be78ee9 VP |
1972 | |
1973 | skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); | |
1974 | req = (struct fw_ofld_connection_wr *)__skb_put(skb, sizeof(*req)); | |
1975 | memset(req, 0, sizeof(*req)); | |
6c53e938 | 1976 | req->op_compl = htonl(WR_OP_V(FW_OFLD_CONNECTION_WR)); |
e2ac9628 | 1977 | req->len16_pkd = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*req), 16))); |
41b4f86c KS |
1978 | req->le.filter = cpu_to_be32(cxgb4_select_ntuple( |
1979 | ep->com.dev->rdev.lldi.ports[0], | |
5be78ee9 | 1980 | ep->l2t)); |
170003c8 | 1981 | sin = (struct sockaddr_in *)&ep->com.local_addr; |
830662f6 VP |
1982 | req->le.lport = sin->sin_port; |
1983 | req->le.u.ipv4.lip = sin->sin_addr.s_addr; | |
170003c8 | 1984 | sin = (struct sockaddr_in *)&ep->com.remote_addr; |
830662f6 VP |
1985 | req->le.pport = sin->sin_port; |
1986 | req->le.u.ipv4.pip = sin->sin_addr.s_addr; | |
5be78ee9 | 1987 | req->tcb.t_state_to_astid = |
77a80e23 HS |
1988 | htonl(FW_OFLD_CONNECTION_WR_T_STATE_V(TCP_SYN_SENT) | |
1989 | FW_OFLD_CONNECTION_WR_ASTID_V(atid)); | |
5be78ee9 | 1990 | req->tcb.cplrxdataack_cplpassacceptrpl = |
77a80e23 | 1991 | htons(FW_OFLD_CONNECTION_WR_CPLRXDATAACK_F); |
ef5d6355 | 1992 | req->tcb.tx_max = (__force __be32) jiffies; |
793dad94 | 1993 | req->tcb.rcv_adv = htons(1); |
92e7ae71 | 1994 | best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx, |
04524a47 H |
1995 | enable_tcp_timestamps, |
1996 | (AF_INET == ep->com.remote_addr.ss_family) ? 0 : 1); | |
5be78ee9 | 1997 | wscale = compute_wscale(rcv_win); |
b408ff28 HS |
1998 | |
1999 | /* | |
2000 | * Specify the largest window that will fit in opt0. The | |
2001 | * remainder will be specified in the rx_data_ack. | |
2002 | */ | |
2003 | win = ep->rcv_win >> 10; | |
d7990b0c AB |
2004 | if (win > RCV_BUFSIZ_M) |
2005 | win = RCV_BUFSIZ_M; | |
b408ff28 | 2006 | |
6c53e938 HS |
2007 | req->tcb.opt0 = (__force __be64) (TCAM_BYPASS_F | |
2008 | (nocong ? NO_CONG_F : 0) | | |
d7990b0c | 2009 | KEEP_ALIVE_F | |
6c53e938 | 2010 | DELACK_F | |
d7990b0c AB |
2011 | WND_SCALE_V(wscale) | |
2012 | MSS_IDX_V(mtu_idx) | | |
2013 | L2T_IDX_V(ep->l2t->idx) | | |
2014 | TX_CHAN_V(ep->tx_chan) | | |
2015 | SMAC_SEL_V(ep->smac_idx) | | |
ac8e4c69 | 2016 | DSCP_V(ep->tos >> 2) | |
d7990b0c AB |
2017 | ULP_MODE_V(ULP_MODE_TCPDDP) | |
2018 | RCV_BUFSIZ_V(win)); | |
6c53e938 HS |
2019 | req->tcb.opt2 = (__force __be32) (PACE_V(1) | |
2020 | TX_QUEUE_V(ep->com.dev->rdev.lldi.tx_modq[ep->tx_chan]) | | |
d7990b0c | 2021 | RX_CHANNEL_V(0) | |
6c53e938 | 2022 | CCTRL_ECN_V(enable_ecn) | |
d7990b0c | 2023 | RSS_QUEUE_VALID_F | RSS_QUEUE_V(ep->rss_qid)); |
5be78ee9 | 2024 | if (enable_tcp_timestamps) |
6c53e938 | 2025 | req->tcb.opt2 |= (__force __be32)TSTAMPS_EN_F; |
5be78ee9 | 2026 | if (enable_tcp_sack) |
6c53e938 | 2027 | req->tcb.opt2 |= (__force __be32)SACK_EN_F; |
5be78ee9 | 2028 | if (wscale && enable_tcp_window_scaling) |
d7990b0c AB |
2029 | req->tcb.opt2 |= (__force __be32)WND_SCALE_EN_F; |
2030 | req->tcb.opt0 = cpu_to_be64((__force u64)req->tcb.opt0); | |
2031 | req->tcb.opt2 = cpu_to_be32((__force u32)req->tcb.opt2); | |
793dad94 VP |
2032 | set_wr_txq(skb, CPL_PRIORITY_CONTROL, ep->ctrlq_idx); |
2033 | set_bit(ACT_OFLD_CONN, &ep->com.history); | |
caa6c9f2 | 2034 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); |
5be78ee9 VP |
2035 | } |
2036 | ||
cfdda9d7 | 2037 | /* |
4c72efef H |
2038 | * Some of the error codes above implicitly indicate that there is no TID |
2039 | * allocated with the result of an ACT_OPEN. We use this predicate to make | |
2040 | * that explicit. | |
cfdda9d7 SW |
2041 | */ |
2042 | static inline int act_open_has_tid(int status) | |
2043 | { | |
4c72efef H |
2044 | return (status != CPL_ERR_TCAM_PARITY && |
2045 | status != CPL_ERR_TCAM_MISS && | |
2046 | status != CPL_ERR_TCAM_FULL && | |
2047 | status != CPL_ERR_CONN_EXIST_SYNRECV && | |
2048 | status != CPL_ERR_CONN_EXIST); | |
cfdda9d7 SW |
2049 | } |
2050 | ||
7a2cea2a SW |
2051 | /* Returns whether a CPL status conveys negative advice. |
2052 | */ | |
2053 | static int is_neg_adv(unsigned int status) | |
2054 | { | |
2055 | return status == CPL_ERR_RTX_NEG_ADVICE || | |
2056 | status == CPL_ERR_PERSIST_NEG_ADVICE || | |
2057 | status == CPL_ERR_KEEPALV_NEG_ADVICE; | |
2058 | } | |
2059 | ||
dd92b124 HS |
2060 | static char *neg_adv_str(unsigned int status) |
2061 | { | |
2062 | switch (status) { | |
2063 | case CPL_ERR_RTX_NEG_ADVICE: | |
2064 | return "Retransmit timeout"; | |
2065 | case CPL_ERR_PERSIST_NEG_ADVICE: | |
2066 | return "Persist timeout"; | |
2067 | case CPL_ERR_KEEPALV_NEG_ADVICE: | |
2068 | return "Keepalive timeout"; | |
2069 | default: | |
2070 | return "Unknown"; | |
2071 | } | |
2072 | } | |
2073 | ||
b408ff28 HS |
2074 | static void set_tcp_window(struct c4iw_ep *ep, struct port_info *pi) |
2075 | { | |
2076 | ep->snd_win = snd_win; | |
2077 | ep->rcv_win = rcv_win; | |
2078 | PDBG("%s snd_win %d rcv_win %d\n", __func__, ep->snd_win, ep->rcv_win); | |
2079 | } | |
2080 | ||
793dad94 VP |
2081 | #define ACT_OPEN_RETRY_COUNT 2 |
2082 | ||
830662f6 VP |
2083 | static int import_ep(struct c4iw_ep *ep, int iptype, __u8 *peer_ip, |
2084 | struct dst_entry *dst, struct c4iw_dev *cdev, | |
ac8e4c69 | 2085 | bool clear_mpa_v1, enum chip_type adapter_type, u8 tos) |
830662f6 VP |
2086 | { |
2087 | struct neighbour *n; | |
2088 | int err, step; | |
2089 | struct net_device *pdev; | |
2090 | ||
2091 | n = dst_neigh_lookup(dst, peer_ip); | |
2092 | if (!n) | |
2093 | return -ENODEV; | |
2094 | ||
2095 | rcu_read_lock(); | |
2096 | err = -ENOMEM; | |
2097 | if (n->dev->flags & IFF_LOOPBACK) { | |
2098 | if (iptype == 4) | |
2099 | pdev = ip_dev_find(&init_net, *(__be32 *)peer_ip); | |
2100 | else if (IS_ENABLED(CONFIG_IPV6)) | |
2101 | for_each_netdev(&init_net, pdev) { | |
2102 | if (ipv6_chk_addr(&init_net, | |
2103 | (struct in6_addr *)peer_ip, | |
2104 | pdev, 1)) | |
2105 | break; | |
2106 | } | |
2107 | else | |
2108 | pdev = NULL; | |
2109 | ||
2110 | if (!pdev) { | |
2111 | err = -ENODEV; | |
2112 | goto out; | |
2113 | } | |
2114 | ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t, | |
ac8e4c69 | 2115 | n, pdev, rt_tos2priority(tos)); |
830662f6 VP |
2116 | if (!ep->l2t) |
2117 | goto out; | |
2118 | ep->mtu = pdev->mtu; | |
2119 | ep->tx_chan = cxgb4_port_chan(pdev); | |
963cab50 H |
2120 | ep->smac_idx = cxgb4_tp_smt_idx(adapter_type, |
2121 | cxgb4_port_viid(pdev)); | |
830662f6 VP |
2122 | step = cdev->rdev.lldi.ntxq / |
2123 | cdev->rdev.lldi.nchan; | |
2124 | ep->txq_idx = cxgb4_port_idx(pdev) * step; | |
2125 | step = cdev->rdev.lldi.nrxq / | |
2126 | cdev->rdev.lldi.nchan; | |
2127 | ep->ctrlq_idx = cxgb4_port_idx(pdev); | |
2128 | ep->rss_qid = cdev->rdev.lldi.rxq_ids[ | |
2129 | cxgb4_port_idx(pdev) * step]; | |
b408ff28 | 2130 | set_tcp_window(ep, (struct port_info *)netdev_priv(pdev)); |
830662f6 VP |
2131 | dev_put(pdev); |
2132 | } else { | |
2133 | pdev = get_real_dev(n->dev); | |
2134 | ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t, | |
2135 | n, pdev, 0); | |
2136 | if (!ep->l2t) | |
2137 | goto out; | |
2138 | ep->mtu = dst_mtu(dst); | |
11b8e22d | 2139 | ep->tx_chan = cxgb4_port_chan(pdev); |
963cab50 H |
2140 | ep->smac_idx = cxgb4_tp_smt_idx(adapter_type, |
2141 | cxgb4_port_viid(pdev)); | |
830662f6 VP |
2142 | step = cdev->rdev.lldi.ntxq / |
2143 | cdev->rdev.lldi.nchan; | |
11b8e22d SW |
2144 | ep->txq_idx = cxgb4_port_idx(pdev) * step; |
2145 | ep->ctrlq_idx = cxgb4_port_idx(pdev); | |
830662f6 VP |
2146 | step = cdev->rdev.lldi.nrxq / |
2147 | cdev->rdev.lldi.nchan; | |
2148 | ep->rss_qid = cdev->rdev.lldi.rxq_ids[ | |
11b8e22d | 2149 | cxgb4_port_idx(pdev) * step]; |
b408ff28 | 2150 | set_tcp_window(ep, (struct port_info *)netdev_priv(pdev)); |
830662f6 VP |
2151 | |
2152 | if (clear_mpa_v1) { | |
2153 | ep->retry_with_mpa_v1 = 0; | |
2154 | ep->tried_with_mpa_v1 = 0; | |
2155 | } | |
2156 | } | |
2157 | err = 0; | |
2158 | out: | |
2159 | rcu_read_unlock(); | |
2160 | ||
2161 | neigh_release(n); | |
2162 | ||
2163 | return err; | |
2164 | } | |
2165 | ||
793dad94 VP |
2166 | static int c4iw_reconnect(struct c4iw_ep *ep) |
2167 | { | |
2168 | int err = 0; | |
4a740838 | 2169 | int size = 0; |
24d44a39 | 2170 | struct sockaddr_in *laddr = (struct sockaddr_in *) |
170003c8 | 2171 | &ep->com.cm_id->m_local_addr; |
24d44a39 | 2172 | struct sockaddr_in *raddr = (struct sockaddr_in *) |
170003c8 | 2173 | &ep->com.cm_id->m_remote_addr; |
830662f6 | 2174 | struct sockaddr_in6 *laddr6 = (struct sockaddr_in6 *) |
170003c8 | 2175 | &ep->com.cm_id->m_local_addr; |
830662f6 | 2176 | struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *) |
170003c8 | 2177 | &ep->com.cm_id->m_remote_addr; |
830662f6 VP |
2178 | int iptype; |
2179 | __u8 *ra; | |
793dad94 VP |
2180 | |
2181 | PDBG("%s qp %p cm_id %p\n", __func__, ep->com.qp, ep->com.cm_id); | |
2182 | init_timer(&ep->timer); | |
093108cb | 2183 | c4iw_init_wr_wait(&ep->com.wr_wait); |
793dad94 | 2184 | |
4a740838 H |
2185 | /* When MPA revision is different on nodes, the node with MPA_rev=2 |
2186 | * tries to reconnect with MPA_rev 1 for the same EP through | |
2187 | * c4iw_reconnect(), where the same EP is assigned with new tid for | |
2188 | * further connection establishment. As we are using the same EP pointer | |
2189 | * for reconnect, few skbs are used during the previous c4iw_connect(), | |
2190 | * which leaves the EP with inadequate skbs for further | |
2191 | * c4iw_reconnect(), Further causing an assert BUG_ON() due to empty | |
2192 | * skb_list() during peer_abort(). Allocate skbs which is already used. | |
2193 | */ | |
2194 | size = (CN_MAX_CON_BUF - skb_queue_len(&ep->com.ep_skb_list)); | |
2195 | if (alloc_ep_skb_list(&ep->com.ep_skb_list, size)) { | |
2196 | err = -ENOMEM; | |
2197 | goto fail1; | |
2198 | } | |
2199 | ||
793dad94 VP |
2200 | /* |
2201 | * Allocate an active TID to initiate a TCP connection. | |
2202 | */ | |
2203 | ep->atid = cxgb4_alloc_atid(ep->com.dev->rdev.lldi.tids, ep); | |
2204 | if (ep->atid == -1) { | |
2205 | pr_err("%s - cannot alloc atid.\n", __func__); | |
2206 | err = -ENOMEM; | |
2207 | goto fail2; | |
2208 | } | |
2209 | insert_handle(ep->com.dev, &ep->com.dev->atid_idr, ep, ep->atid); | |
2210 | ||
2211 | /* find a route */ | |
170003c8 | 2212 | if (ep->com.cm_id->m_local_addr.ss_family == AF_INET) { |
830662f6 VP |
2213 | ep->dst = find_route(ep->com.dev, laddr->sin_addr.s_addr, |
2214 | raddr->sin_addr.s_addr, laddr->sin_port, | |
ac8e4c69 | 2215 | raddr->sin_port, ep->com.cm_id->tos); |
830662f6 VP |
2216 | iptype = 4; |
2217 | ra = (__u8 *)&raddr->sin_addr; | |
2218 | } else { | |
2219 | ep->dst = find_route6(ep->com.dev, laddr6->sin6_addr.s6_addr, | |
2220 | raddr6->sin6_addr.s6_addr, | |
2221 | laddr6->sin6_port, raddr6->sin6_port, 0, | |
2222 | raddr6->sin6_scope_id); | |
2223 | iptype = 6; | |
2224 | ra = (__u8 *)&raddr6->sin6_addr; | |
2225 | } | |
2226 | if (!ep->dst) { | |
793dad94 VP |
2227 | pr_err("%s - cannot find route.\n", __func__); |
2228 | err = -EHOSTUNREACH; | |
2229 | goto fail3; | |
2230 | } | |
963cab50 | 2231 | err = import_ep(ep, iptype, ra, ep->dst, ep->com.dev, false, |
ac8e4c69 H |
2232 | ep->com.dev->rdev.lldi.adapter_type, |
2233 | ep->com.cm_id->tos); | |
830662f6 | 2234 | if (err) { |
793dad94 | 2235 | pr_err("%s - cannot alloc l2e.\n", __func__); |
793dad94 VP |
2236 | goto fail4; |
2237 | } | |
2238 | ||
2239 | PDBG("%s txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n", | |
2240 | __func__, ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid, | |
2241 | ep->l2t->idx); | |
2242 | ||
2243 | state_set(&ep->com, CONNECTING); | |
ac8e4c69 | 2244 | ep->tos = ep->com.cm_id->tos; |
793dad94 VP |
2245 | |
2246 | /* send connect request to rnic */ | |
2247 | err = send_connect(ep); | |
2248 | if (!err) | |
2249 | goto out; | |
2250 | ||
2251 | cxgb4_l2t_release(ep->l2t); | |
2252 | fail4: | |
2253 | dst_release(ep->dst); | |
2254 | fail3: | |
2255 | remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid); | |
2256 | cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid); | |
2257 | fail2: | |
2258 | /* | |
2259 | * remember to send notification to upper layer. | |
2260 | * We are in here so the upper layer is not aware that this is | |
2261 | * re-connect attempt and so, upper layer is still waiting for | |
2262 | * response of 1st connect request. | |
2263 | */ | |
2264 | connect_reply_upcall(ep, -ECONNRESET); | |
4a740838 | 2265 | fail1: |
793dad94 VP |
2266 | c4iw_put_ep(&ep->com); |
2267 | out: | |
2268 | return err; | |
2269 | } | |
2270 | ||
cfdda9d7 SW |
2271 | static int act_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb) |
2272 | { | |
2273 | struct c4iw_ep *ep; | |
2274 | struct cpl_act_open_rpl *rpl = cplhdr(skb); | |
6c53e938 HS |
2275 | unsigned int atid = TID_TID_G(AOPEN_ATID_G( |
2276 | ntohl(rpl->atid_status))); | |
cfdda9d7 | 2277 | struct tid_info *t = dev->rdev.lldi.tids; |
6c53e938 | 2278 | int status = AOPEN_STATUS_G(ntohl(rpl->atid_status)); |
830662f6 VP |
2279 | struct sockaddr_in *la; |
2280 | struct sockaddr_in *ra; | |
2281 | struct sockaddr_in6 *la6; | |
2282 | struct sockaddr_in6 *ra6; | |
caa6c9f2 | 2283 | int ret = 0; |
cfdda9d7 SW |
2284 | |
2285 | ep = lookup_atid(t, atid); | |
170003c8 SW |
2286 | la = (struct sockaddr_in *)&ep->com.local_addr; |
2287 | ra = (struct sockaddr_in *)&ep->com.remote_addr; | |
2288 | la6 = (struct sockaddr_in6 *)&ep->com.local_addr; | |
2289 | ra6 = (struct sockaddr_in6 *)&ep->com.remote_addr; | |
cfdda9d7 SW |
2290 | |
2291 | PDBG("%s ep %p atid %u status %u errno %d\n", __func__, ep, atid, | |
2292 | status, status2errno(status)); | |
2293 | ||
7a2cea2a | 2294 | if (is_neg_adv(status)) { |
179d03bb H |
2295 | PDBG("%s Connection problems for atid %u status %u (%s)\n", |
2296 | __func__, atid, status, neg_adv_str(status)); | |
2297 | ep->stats.connect_neg_adv++; | |
2298 | mutex_lock(&dev->rdev.stats.lock); | |
2299 | dev->rdev.stats.neg_adv++; | |
2300 | mutex_unlock(&dev->rdev.stats.lock); | |
cfdda9d7 SW |
2301 | return 0; |
2302 | } | |
2303 | ||
793dad94 VP |
2304 | set_bit(ACT_OPEN_RPL, &ep->com.history); |
2305 | ||
d716a2a0 VP |
2306 | /* |
2307 | * Log interesting failures. | |
2308 | */ | |
2309 | switch (status) { | |
2310 | case CPL_ERR_CONN_RESET: | |
2311 | case CPL_ERR_CONN_TIMEDOUT: | |
2312 | break; | |
5be78ee9 | 2313 | case CPL_ERR_TCAM_FULL: |
830662f6 | 2314 | mutex_lock(&dev->rdev.stats.lock); |
3b174d94 | 2315 | dev->rdev.stats.tcam_full++; |
830662f6 VP |
2316 | mutex_unlock(&dev->rdev.stats.lock); |
2317 | if (ep->com.local_addr.ss_family == AF_INET && | |
2318 | dev->rdev.lldi.enable_fw_ofld_conn) { | |
caa6c9f2 H |
2319 | ret = send_fw_act_open_req(ep, TID_TID_G(AOPEN_ATID_G( |
2320 | ntohl(rpl->atid_status)))); | |
2321 | if (ret) | |
2322 | goto fail; | |
793dad94 VP |
2323 | return 0; |
2324 | } | |
2325 | break; | |
2326 | case CPL_ERR_CONN_EXIST: | |
2327 | if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) { | |
2328 | set_bit(ACT_RETRY_INUSE, &ep->com.history); | |
84cc6ac6 H |
2329 | if (ep->com.remote_addr.ss_family == AF_INET6) { |
2330 | struct sockaddr_in6 *sin6 = | |
2331 | (struct sockaddr_in6 *) | |
170003c8 | 2332 | &ep->com.local_addr; |
84cc6ac6 H |
2333 | cxgb4_clip_release( |
2334 | ep->com.dev->rdev.lldi.ports[0], | |
2335 | (const u32 *) | |
2336 | &sin6->sin6_addr.s6_addr, 1); | |
2337 | } | |
793dad94 VP |
2338 | remove_handle(ep->com.dev, &ep->com.dev->atid_idr, |
2339 | atid); | |
2340 | cxgb4_free_atid(t, atid); | |
2341 | dst_release(ep->dst); | |
2342 | cxgb4_l2t_release(ep->l2t); | |
2343 | c4iw_reconnect(ep); | |
2344 | return 0; | |
2345 | } | |
5be78ee9 | 2346 | break; |
d716a2a0 | 2347 | default: |
830662f6 VP |
2348 | if (ep->com.local_addr.ss_family == AF_INET) { |
2349 | pr_info("Active open failure - atid %u status %u errno %d %pI4:%u->%pI4:%u\n", | |
2350 | atid, status, status2errno(status), | |
2351 | &la->sin_addr.s_addr, ntohs(la->sin_port), | |
2352 | &ra->sin_addr.s_addr, ntohs(ra->sin_port)); | |
2353 | } else { | |
2354 | pr_info("Active open failure - atid %u status %u errno %d %pI6:%u->%pI6:%u\n", | |
2355 | atid, status, status2errno(status), | |
2356 | la6->sin6_addr.s6_addr, ntohs(la6->sin6_port), | |
2357 | ra6->sin6_addr.s6_addr, ntohs(ra6->sin6_port)); | |
2358 | } | |
d716a2a0 VP |
2359 | break; |
2360 | } | |
2361 | ||
caa6c9f2 | 2362 | fail: |
cfdda9d7 SW |
2363 | connect_reply_upcall(ep, status2errno(status)); |
2364 | state_set(&ep->com, DEAD); | |
2365 | ||
84cc6ac6 H |
2366 | if (ep->com.remote_addr.ss_family == AF_INET6) { |
2367 | struct sockaddr_in6 *sin6 = | |
170003c8 | 2368 | (struct sockaddr_in6 *)&ep->com.local_addr; |
84cc6ac6 H |
2369 | cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0], |
2370 | (const u32 *)&sin6->sin6_addr.s6_addr, 1); | |
2371 | } | |
cfdda9d7 SW |
2372 | if (status && act_open_has_tid(status)) |
2373 | cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, GET_TID(rpl)); | |
2374 | ||
793dad94 | 2375 | remove_handle(ep->com.dev, &ep->com.dev->atid_idr, atid); |
cfdda9d7 SW |
2376 | cxgb4_free_atid(t, atid); |
2377 | dst_release(ep->dst); | |
2378 | cxgb4_l2t_release(ep->l2t); | |
2379 | c4iw_put_ep(&ep->com); | |
2380 | ||
2381 | return 0; | |
2382 | } | |
2383 | ||
2384 | static int pass_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb) | |
2385 | { | |
2386 | struct cpl_pass_open_rpl *rpl = cplhdr(skb); | |
cfdda9d7 | 2387 | unsigned int stid = GET_TID(rpl); |
f86fac79 | 2388 | struct c4iw_listen_ep *ep = get_ep_from_stid(dev, stid); |
cfdda9d7 SW |
2389 | |
2390 | if (!ep) { | |
1cab775c VP |
2391 | PDBG("%s stid %d lookup failure!\n", __func__, stid); |
2392 | goto out; | |
cfdda9d7 SW |
2393 | } |
2394 | PDBG("%s ep %p status %d error %d\n", __func__, ep, | |
2395 | rpl->status, status2errno(rpl->status)); | |
d9594d99 | 2396 | c4iw_wake_up(&ep->com.wr_wait, status2errno(rpl->status)); |
f86fac79 | 2397 | c4iw_put_ep(&ep->com); |
1cab775c | 2398 | out: |
cfdda9d7 SW |
2399 | return 0; |
2400 | } | |
2401 | ||
cfdda9d7 SW |
2402 | static int close_listsrv_rpl(struct c4iw_dev *dev, struct sk_buff *skb) |
2403 | { | |
2404 | struct cpl_close_listsvr_rpl *rpl = cplhdr(skb); | |
cfdda9d7 | 2405 | unsigned int stid = GET_TID(rpl); |
f86fac79 | 2406 | struct c4iw_listen_ep *ep = get_ep_from_stid(dev, stid); |
cfdda9d7 SW |
2407 | |
2408 | PDBG("%s ep %p\n", __func__, ep); | |
d9594d99 | 2409 | c4iw_wake_up(&ep->com.wr_wait, status2errno(rpl->status)); |
f86fac79 | 2410 | c4iw_put_ep(&ep->com); |
cfdda9d7 SW |
2411 | return 0; |
2412 | } | |
2413 | ||
9dec900c H |
2414 | static int accept_cr(struct c4iw_ep *ep, struct sk_buff *skb, |
2415 | struct cpl_pass_accept_req *req) | |
cfdda9d7 SW |
2416 | { |
2417 | struct cpl_pass_accept_rpl *rpl; | |
2418 | unsigned int mtu_idx; | |
2419 | u64 opt0; | |
2420 | u32 opt2; | |
2421 | int wscale; | |
92e7ae71 | 2422 | struct cpl_t5_pass_accept_rpl *rpl5 = NULL; |
b408ff28 | 2423 | int win; |
963cab50 | 2424 | enum chip_type adapter_type = ep->com.dev->rdev.lldi.adapter_type; |
cfdda9d7 SW |
2425 | |
2426 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
2427 | BUG_ON(skb_cloned(skb)); | |
92e7ae71 | 2428 | |
cfdda9d7 | 2429 | skb_get(skb); |
92e7ae71 | 2430 | rpl = cplhdr(skb); |
963cab50 | 2431 | if (!is_t4(adapter_type)) { |
92e7ae71 HS |
2432 | skb_trim(skb, roundup(sizeof(*rpl5), 16)); |
2433 | rpl5 = (void *)rpl; | |
2434 | INIT_TP_WR(rpl5, ep->hwtid); | |
2435 | } else { | |
2436 | skb_trim(skb, sizeof(*rpl)); | |
2437 | INIT_TP_WR(rpl, ep->hwtid); | |
2438 | } | |
2439 | OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL, | |
2440 | ep->hwtid)); | |
2441 | ||
2442 | best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx, | |
04524a47 H |
2443 | enable_tcp_timestamps && req->tcpopt.tstamp, |
2444 | (AF_INET == ep->com.remote_addr.ss_family) ? 0 : 1); | |
cfdda9d7 | 2445 | wscale = compute_wscale(rcv_win); |
b408ff28 HS |
2446 | |
2447 | /* | |
2448 | * Specify the largest window that will fit in opt0. The | |
2449 | * remainder will be specified in the rx_data_ack. | |
2450 | */ | |
2451 | win = ep->rcv_win >> 10; | |
d7990b0c AB |
2452 | if (win > RCV_BUFSIZ_M) |
2453 | win = RCV_BUFSIZ_M; | |
6c53e938 | 2454 | opt0 = (nocong ? NO_CONG_F : 0) | |
d7990b0c | 2455 | KEEP_ALIVE_F | |
6c53e938 | 2456 | DELACK_F | |
d7990b0c AB |
2457 | WND_SCALE_V(wscale) | |
2458 | MSS_IDX_V(mtu_idx) | | |
2459 | L2T_IDX_V(ep->l2t->idx) | | |
2460 | TX_CHAN_V(ep->tx_chan) | | |
2461 | SMAC_SEL_V(ep->smac_idx) | | |
6c53e938 | 2462 | DSCP_V(ep->tos >> 2) | |
d7990b0c AB |
2463 | ULP_MODE_V(ULP_MODE_TCPDDP) | |
2464 | RCV_BUFSIZ_V(win); | |
2465 | opt2 = RX_CHANNEL_V(0) | | |
2466 | RSS_QUEUE_VALID_F | RSS_QUEUE_V(ep->rss_qid); | |
cfdda9d7 SW |
2467 | |
2468 | if (enable_tcp_timestamps && req->tcpopt.tstamp) | |
6c53e938 | 2469 | opt2 |= TSTAMPS_EN_F; |
cfdda9d7 | 2470 | if (enable_tcp_sack && req->tcpopt.sack) |
6c53e938 | 2471 | opt2 |= SACK_EN_F; |
cfdda9d7 | 2472 | if (wscale && enable_tcp_window_scaling) |
d7990b0c | 2473 | opt2 |= WND_SCALE_EN_F; |
5be78ee9 VP |
2474 | if (enable_ecn) { |
2475 | const struct tcphdr *tcph; | |
2476 | u32 hlen = ntohl(req->hdr_len); | |
2477 | ||
963cab50 H |
2478 | if (CHELSIO_CHIP_VERSION(adapter_type) <= CHELSIO_T5) |
2479 | tcph = (const void *)(req + 1) + ETH_HDR_LEN_G(hlen) + | |
2480 | IP_HDR_LEN_G(hlen); | |
2481 | else | |
2482 | tcph = (const void *)(req + 1) + | |
2483 | T6_ETH_HDR_LEN_G(hlen) + T6_IP_HDR_LEN_G(hlen); | |
5be78ee9 | 2484 | if (tcph->ece && tcph->cwr) |
6c53e938 | 2485 | opt2 |= CCTRL_ECN_V(1); |
5be78ee9 | 2486 | } |
963cab50 | 2487 | if (CHELSIO_CHIP_VERSION(adapter_type) > CHELSIO_T4) { |
92e7ae71 | 2488 | u32 isn = (prandom_u32() & ~7UL) - 1; |
d7990b0c | 2489 | opt2 |= T5_OPT_2_VALID_F; |
cf7fe64a | 2490 | opt2 |= CONG_CNTRL_V(CONG_ALG_TAHOE); |
0b741047 | 2491 | opt2 |= T5_ISS_F; |
92e7ae71 HS |
2492 | rpl5 = (void *)rpl; |
2493 | memset(&rpl5->iss, 0, roundup(sizeof(*rpl5)-sizeof(*rpl), 16)); | |
2494 | if (peer2peer) | |
2495 | isn += 4; | |
2496 | rpl5->iss = cpu_to_be32(isn); | |
2497 | PDBG("%s iss %u\n", __func__, be32_to_cpu(rpl5->iss)); | |
92e5011a | 2498 | } |
cfdda9d7 | 2499 | |
cfdda9d7 SW |
2500 | rpl->opt0 = cpu_to_be64(opt0); |
2501 | rpl->opt2 = cpu_to_be32(opt2); | |
d4f1a5c6 | 2502 | set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx); |
9dec900c | 2503 | t4_set_arp_err_handler(skb, ep, pass_accept_rpl_arp_failure); |
cfdda9d7 | 2504 | |
9dec900c | 2505 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); |
cfdda9d7 SW |
2506 | } |
2507 | ||
830662f6 | 2508 | static void reject_cr(struct c4iw_dev *dev, u32 hwtid, struct sk_buff *skb) |
cfdda9d7 | 2509 | { |
830662f6 | 2510 | PDBG("%s c4iw_dev %p tid %u\n", __func__, dev, hwtid); |
cfdda9d7 SW |
2511 | BUG_ON(skb_cloned(skb)); |
2512 | skb_trim(skb, sizeof(struct cpl_tid_release)); | |
cfdda9d7 SW |
2513 | release_tid(&dev->rdev, hwtid, skb); |
2514 | return; | |
2515 | } | |
2516 | ||
963cab50 H |
2517 | static void get_4tuple(struct cpl_pass_accept_req *req, enum chip_type type, |
2518 | int *iptype, __u8 *local_ip, __u8 *peer_ip, | |
cfdda9d7 SW |
2519 | __be16 *local_port, __be16 *peer_port) |
2520 | { | |
963cab50 H |
2521 | int eth_len = (CHELSIO_CHIP_VERSION(type) <= CHELSIO_T5) ? |
2522 | ETH_HDR_LEN_G(be32_to_cpu(req->hdr_len)) : | |
2523 | T6_ETH_HDR_LEN_G(be32_to_cpu(req->hdr_len)); | |
2524 | int ip_len = (CHELSIO_CHIP_VERSION(type) <= CHELSIO_T5) ? | |
2525 | IP_HDR_LEN_G(be32_to_cpu(req->hdr_len)) : | |
2526 | T6_IP_HDR_LEN_G(be32_to_cpu(req->hdr_len)); | |
cfdda9d7 | 2527 | struct iphdr *ip = (struct iphdr *)((u8 *)(req + 1) + eth_len); |
830662f6 | 2528 | struct ipv6hdr *ip6 = (struct ipv6hdr *)((u8 *)(req + 1) + eth_len); |
cfdda9d7 SW |
2529 | struct tcphdr *tcp = (struct tcphdr *) |
2530 | ((u8 *)(req + 1) + eth_len + ip_len); | |
2531 | ||
830662f6 VP |
2532 | if (ip->version == 4) { |
2533 | PDBG("%s saddr 0x%x daddr 0x%x sport %u dport %u\n", __func__, | |
2534 | ntohl(ip->saddr), ntohl(ip->daddr), ntohs(tcp->source), | |
2535 | ntohs(tcp->dest)); | |
2536 | *iptype = 4; | |
2537 | memcpy(peer_ip, &ip->saddr, 4); | |
2538 | memcpy(local_ip, &ip->daddr, 4); | |
2539 | } else { | |
2540 | PDBG("%s saddr %pI6 daddr %pI6 sport %u dport %u\n", __func__, | |
2541 | ip6->saddr.s6_addr, ip6->daddr.s6_addr, ntohs(tcp->source), | |
2542 | ntohs(tcp->dest)); | |
2543 | *iptype = 6; | |
2544 | memcpy(peer_ip, ip6->saddr.s6_addr, 16); | |
2545 | memcpy(local_ip, ip6->daddr.s6_addr, 16); | |
2546 | } | |
cfdda9d7 SW |
2547 | *peer_port = tcp->source; |
2548 | *local_port = tcp->dest; | |
2549 | ||
2550 | return; | |
2551 | } | |
2552 | ||
2553 | static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb) | |
2554 | { | |
793dad94 | 2555 | struct c4iw_ep *child_ep = NULL, *parent_ep; |
cfdda9d7 | 2556 | struct cpl_pass_accept_req *req = cplhdr(skb); |
6c53e938 | 2557 | unsigned int stid = PASS_OPEN_TID_G(ntohl(req->tos_stid)); |
cfdda9d7 SW |
2558 | struct tid_info *t = dev->rdev.lldi.tids; |
2559 | unsigned int hwtid = GET_TID(req); | |
2560 | struct dst_entry *dst; | |
830662f6 | 2561 | __u8 local_ip[16], peer_ip[16]; |
cfdda9d7 | 2562 | __be16 local_port, peer_port; |
84cc6ac6 | 2563 | struct sockaddr_in6 *sin6; |
3786cf18 | 2564 | int err; |
1cab775c | 2565 | u16 peer_mss = ntohs(req->tcpopt.mss); |
830662f6 | 2566 | int iptype; |
92e7ae71 | 2567 | unsigned short hdrs; |
ac8e4c69 | 2568 | u8 tos = PASS_OPEN_TOS_G(ntohl(req->tos_stid)); |
cfdda9d7 | 2569 | |
f86fac79 | 2570 | parent_ep = (struct c4iw_ep *)get_ep_from_stid(dev, stid); |
1cab775c VP |
2571 | if (!parent_ep) { |
2572 | PDBG("%s connect request on invalid stid %d\n", __func__, stid); | |
2573 | goto reject; | |
2574 | } | |
1cab775c | 2575 | |
cfdda9d7 | 2576 | if (state_read(&parent_ep->com) != LISTEN) { |
6812faef | 2577 | PDBG("%s - listening ep not in LISTEN\n", __func__); |
cfdda9d7 SW |
2578 | goto reject; |
2579 | } | |
2580 | ||
963cab50 H |
2581 | get_4tuple(req, parent_ep->com.dev->rdev.lldi.adapter_type, &iptype, |
2582 | local_ip, peer_ip, &local_port, &peer_port); | |
830662f6 | 2583 | |
cfdda9d7 | 2584 | /* Find output route */ |
830662f6 VP |
2585 | if (iptype == 4) { |
2586 | PDBG("%s parent ep %p hwtid %u laddr %pI4 raddr %pI4 lport %d rport %d peer_mss %d\n" | |
2587 | , __func__, parent_ep, hwtid, | |
2588 | local_ip, peer_ip, ntohs(local_port), | |
2589 | ntohs(peer_port), peer_mss); | |
2590 | dst = find_route(dev, *(__be32 *)local_ip, *(__be32 *)peer_ip, | |
2591 | local_port, peer_port, | |
ac8e4c69 | 2592 | tos); |
830662f6 VP |
2593 | } else { |
2594 | PDBG("%s parent ep %p hwtid %u laddr %pI6 raddr %pI6 lport %d rport %d peer_mss %d\n" | |
2595 | , __func__, parent_ep, hwtid, | |
2596 | local_ip, peer_ip, ntohs(local_port), | |
2597 | ntohs(peer_port), peer_mss); | |
2598 | dst = find_route6(dev, local_ip, peer_ip, local_port, peer_port, | |
6c53e938 | 2599 | PASS_OPEN_TOS_G(ntohl(req->tos_stid)), |
830662f6 VP |
2600 | ((struct sockaddr_in6 *) |
2601 | &parent_ep->com.local_addr)->sin6_scope_id); | |
2602 | } | |
2603 | if (!dst) { | |
cfdda9d7 SW |
2604 | printk(KERN_ERR MOD "%s - failed to find dst entry!\n", |
2605 | __func__); | |
2606 | goto reject; | |
2607 | } | |
3786cf18 DM |
2608 | |
2609 | child_ep = alloc_ep(sizeof(*child_ep), GFP_KERNEL); | |
2610 | if (!child_ep) { | |
2611 | printk(KERN_ERR MOD "%s - failed to allocate ep entry!\n", | |
cfdda9d7 SW |
2612 | __func__); |
2613 | dst_release(dst); | |
2614 | goto reject; | |
2615 | } | |
2616 | ||
963cab50 | 2617 | err = import_ep(child_ep, iptype, peer_ip, dst, dev, false, |
ac8e4c69 | 2618 | parent_ep->com.dev->rdev.lldi.adapter_type, tos); |
3786cf18 DM |
2619 | if (err) { |
2620 | printk(KERN_ERR MOD "%s - failed to allocate l2t entry!\n", | |
cfdda9d7 | 2621 | __func__); |
cfdda9d7 | 2622 | dst_release(dst); |
3786cf18 | 2623 | kfree(child_ep); |
cfdda9d7 SW |
2624 | goto reject; |
2625 | } | |
3786cf18 | 2626 | |
92e7ae71 HS |
2627 | hdrs = sizeof(struct iphdr) + sizeof(struct tcphdr) + |
2628 | ((enable_tcp_timestamps && req->tcpopt.tstamp) ? 12 : 0); | |
2629 | if (peer_mss && child_ep->mtu > (peer_mss + hdrs)) | |
2630 | child_ep->mtu = peer_mss + hdrs; | |
1cab775c | 2631 | |
4a740838 H |
2632 | skb_queue_head_init(&child_ep->com.ep_skb_list); |
2633 | if (alloc_ep_skb_list(&child_ep->com.ep_skb_list, CN_MAX_CON_BUF)) | |
2634 | goto fail; | |
2635 | ||
cfdda9d7 SW |
2636 | state_set(&child_ep->com, CONNECTING); |
2637 | child_ep->com.dev = dev; | |
2638 | child_ep->com.cm_id = NULL; | |
5b6b8fe6 | 2639 | |
830662f6 VP |
2640 | if (iptype == 4) { |
2641 | struct sockaddr_in *sin = (struct sockaddr_in *) | |
170003c8 | 2642 | &child_ep->com.local_addr; |
5b6b8fe6 | 2643 | |
830662f6 VP |
2644 | sin->sin_family = PF_INET; |
2645 | sin->sin_port = local_port; | |
2646 | sin->sin_addr.s_addr = *(__be32 *)local_ip; | |
5b6b8fe6 SW |
2647 | |
2648 | sin = (struct sockaddr_in *)&child_ep->com.local_addr; | |
2649 | sin->sin_family = PF_INET; | |
2650 | sin->sin_port = ((struct sockaddr_in *) | |
2651 | &parent_ep->com.local_addr)->sin_port; | |
2652 | sin->sin_addr.s_addr = *(__be32 *)local_ip; | |
2653 | ||
170003c8 | 2654 | sin = (struct sockaddr_in *)&child_ep->com.remote_addr; |
830662f6 VP |
2655 | sin->sin_family = PF_INET; |
2656 | sin->sin_port = peer_port; | |
2657 | sin->sin_addr.s_addr = *(__be32 *)peer_ip; | |
2658 | } else { | |
170003c8 | 2659 | sin6 = (struct sockaddr_in6 *)&child_ep->com.local_addr; |
830662f6 VP |
2660 | sin6->sin6_family = PF_INET6; |
2661 | sin6->sin6_port = local_port; | |
2662 | memcpy(sin6->sin6_addr.s6_addr, local_ip, 16); | |
5b6b8fe6 SW |
2663 | |
2664 | sin6 = (struct sockaddr_in6 *)&child_ep->com.local_addr; | |
2665 | sin6->sin6_family = PF_INET6; | |
2666 | sin6->sin6_port = ((struct sockaddr_in6 *) | |
2667 | &parent_ep->com.local_addr)->sin6_port; | |
2668 | memcpy(sin6->sin6_addr.s6_addr, local_ip, 16); | |
2669 | ||
170003c8 | 2670 | sin6 = (struct sockaddr_in6 *)&child_ep->com.remote_addr; |
830662f6 VP |
2671 | sin6->sin6_family = PF_INET6; |
2672 | sin6->sin6_port = peer_port; | |
2673 | memcpy(sin6->sin6_addr.s6_addr, peer_ip, 16); | |
2674 | } | |
5b6b8fe6 | 2675 | |
cfdda9d7 SW |
2676 | c4iw_get_ep(&parent_ep->com); |
2677 | child_ep->parent_ep = parent_ep; | |
ac8e4c69 | 2678 | child_ep->tos = tos; |
cfdda9d7 SW |
2679 | child_ep->dst = dst; |
2680 | child_ep->hwtid = hwtid; | |
cfdda9d7 SW |
2681 | |
2682 | PDBG("%s tx_chan %u smac_idx %u rss_qid %u\n", __func__, | |
3786cf18 | 2683 | child_ep->tx_chan, child_ep->smac_idx, child_ep->rss_qid); |
cfdda9d7 SW |
2684 | |
2685 | init_timer(&child_ep->timer); | |
2686 | cxgb4_insert_tid(t, child_ep, hwtid); | |
944661dd | 2687 | insert_ep_tid(child_ep); |
9dec900c H |
2688 | if (accept_cr(child_ep, skb, req)) { |
2689 | c4iw_put_ep(&parent_ep->com); | |
2690 | release_ep_resources(child_ep); | |
2691 | } else { | |
2692 | set_bit(PASS_ACCEPT_REQ, &child_ep->com.history); | |
2693 | } | |
84cc6ac6 | 2694 | if (iptype == 6) { |
170003c8 | 2695 | sin6 = (struct sockaddr_in6 *)&child_ep->com.local_addr; |
84cc6ac6 H |
2696 | cxgb4_clip_get(child_ep->com.dev->rdev.lldi.ports[0], |
2697 | (const u32 *)&sin6->sin6_addr.s6_addr, 1); | |
2698 | } | |
cfdda9d7 | 2699 | goto out; |
4a740838 H |
2700 | fail: |
2701 | c4iw_put_ep(&child_ep->com); | |
cfdda9d7 | 2702 | reject: |
830662f6 | 2703 | reject_cr(dev, hwtid, skb); |
f86fac79 H |
2704 | if (parent_ep) |
2705 | c4iw_put_ep(&parent_ep->com); | |
cfdda9d7 SW |
2706 | out: |
2707 | return 0; | |
2708 | } | |
2709 | ||
2710 | static int pass_establish(struct c4iw_dev *dev, struct sk_buff *skb) | |
2711 | { | |
2712 | struct c4iw_ep *ep; | |
2713 | struct cpl_pass_establish *req = cplhdr(skb); | |
cfdda9d7 | 2714 | unsigned int tid = GET_TID(req); |
fef4422d | 2715 | int ret; |
cfdda9d7 | 2716 | |
944661dd | 2717 | ep = get_ep_from_tid(dev, tid); |
cfdda9d7 SW |
2718 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
2719 | ep->snd_seq = be32_to_cpu(req->snd_isn); | |
2720 | ep->rcv_seq = be32_to_cpu(req->rcv_isn); | |
2721 | ||
1cab775c VP |
2722 | PDBG("%s ep %p hwtid %u tcp_opt 0x%02x\n", __func__, ep, tid, |
2723 | ntohs(req->tcp_opt)); | |
2724 | ||
cfdda9d7 SW |
2725 | set_emss(ep, ntohs(req->tcp_opt)); |
2726 | ||
2727 | dst_confirm(ep->dst); | |
fef4422d H |
2728 | mutex_lock(&ep->com.mutex); |
2729 | ep->com.state = MPA_REQ_WAIT; | |
cfdda9d7 | 2730 | start_ep_timer(ep); |
793dad94 | 2731 | set_bit(PASS_ESTAB, &ep->com.history); |
4a740838 | 2732 | ret = send_flowc(ep); |
fef4422d H |
2733 | mutex_unlock(&ep->com.mutex); |
2734 | if (ret) | |
2735 | c4iw_ep_disconnect(ep, 1, GFP_KERNEL); | |
944661dd | 2736 | c4iw_put_ep(&ep->com); |
cfdda9d7 SW |
2737 | |
2738 | return 0; | |
2739 | } | |
2740 | ||
2741 | static int peer_close(struct c4iw_dev *dev, struct sk_buff *skb) | |
2742 | { | |
2743 | struct cpl_peer_close *hdr = cplhdr(skb); | |
2744 | struct c4iw_ep *ep; | |
2745 | struct c4iw_qp_attributes attrs; | |
cfdda9d7 SW |
2746 | int disconnect = 1; |
2747 | int release = 0; | |
cfdda9d7 | 2748 | unsigned int tid = GET_TID(hdr); |
8da7e7a5 | 2749 | int ret; |
cfdda9d7 | 2750 | |
944661dd H |
2751 | ep = get_ep_from_tid(dev, tid); |
2752 | if (!ep) | |
2753 | return 0; | |
2754 | ||
cfdda9d7 SW |
2755 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
2756 | dst_confirm(ep->dst); | |
2757 | ||
793dad94 | 2758 | set_bit(PEER_CLOSE, &ep->com.history); |
2f5b48c3 | 2759 | mutex_lock(&ep->com.mutex); |
cfdda9d7 SW |
2760 | switch (ep->com.state) { |
2761 | case MPA_REQ_WAIT: | |
2762 | __state_set(&ep->com, CLOSING); | |
2763 | break; | |
2764 | case MPA_REQ_SENT: | |
2765 | __state_set(&ep->com, CLOSING); | |
2766 | connect_reply_upcall(ep, -ECONNRESET); | |
2767 | break; | |
2768 | case MPA_REQ_RCVD: | |
2769 | ||
2770 | /* | |
2771 | * We're gonna mark this puppy DEAD, but keep | |
2772 | * the reference on it until the ULP accepts or | |
2773 | * rejects the CR. Also wake up anyone waiting | |
2774 | * in rdma connection migration (see c4iw_accept_cr()). | |
2775 | */ | |
2776 | __state_set(&ep->com, CLOSING); | |
cfdda9d7 | 2777 | PDBG("waking up ep %p tid %u\n", ep, ep->hwtid); |
d9594d99 | 2778 | c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); |
cfdda9d7 SW |
2779 | break; |
2780 | case MPA_REP_SENT: | |
2781 | __state_set(&ep->com, CLOSING); | |
cfdda9d7 | 2782 | PDBG("waking up ep %p tid %u\n", ep, ep->hwtid); |
d9594d99 | 2783 | c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); |
cfdda9d7 SW |
2784 | break; |
2785 | case FPDU_MODE: | |
ca5a2202 | 2786 | start_ep_timer(ep); |
cfdda9d7 | 2787 | __state_set(&ep->com, CLOSING); |
30c95c2d | 2788 | attrs.next_state = C4IW_QP_STATE_CLOSING; |
8da7e7a5 | 2789 | ret = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, |
30c95c2d | 2790 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); |
8da7e7a5 SW |
2791 | if (ret != -ECONNRESET) { |
2792 | peer_close_upcall(ep); | |
2793 | disconnect = 1; | |
2794 | } | |
cfdda9d7 SW |
2795 | break; |
2796 | case ABORTING: | |
2797 | disconnect = 0; | |
2798 | break; | |
2799 | case CLOSING: | |
2800 | __state_set(&ep->com, MORIBUND); | |
2801 | disconnect = 0; | |
2802 | break; | |
2803 | case MORIBUND: | |
b33bd0cb | 2804 | (void)stop_ep_timer(ep); |
cfdda9d7 SW |
2805 | if (ep->com.cm_id && ep->com.qp) { |
2806 | attrs.next_state = C4IW_QP_STATE_IDLE; | |
2807 | c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, | |
2808 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); | |
2809 | } | |
be13b2df | 2810 | close_complete_upcall(ep, 0); |
cfdda9d7 SW |
2811 | __state_set(&ep->com, DEAD); |
2812 | release = 1; | |
2813 | disconnect = 0; | |
2814 | break; | |
2815 | case DEAD: | |
2816 | disconnect = 0; | |
2817 | break; | |
2818 | default: | |
2819 | BUG_ON(1); | |
2820 | } | |
2f5b48c3 | 2821 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
2822 | if (disconnect) |
2823 | c4iw_ep_disconnect(ep, 0, GFP_KERNEL); | |
2824 | if (release) | |
2825 | release_ep_resources(ep); | |
944661dd | 2826 | c4iw_put_ep(&ep->com); |
cfdda9d7 SW |
2827 | return 0; |
2828 | } | |
2829 | ||
cfdda9d7 SW |
2830 | static int peer_abort(struct c4iw_dev *dev, struct sk_buff *skb) |
2831 | { | |
2832 | struct cpl_abort_req_rss *req = cplhdr(skb); | |
2833 | struct c4iw_ep *ep; | |
2834 | struct cpl_abort_rpl *rpl; | |
2835 | struct sk_buff *rpl_skb; | |
2836 | struct c4iw_qp_attributes attrs; | |
2837 | int ret; | |
2838 | int release = 0; | |
cfdda9d7 | 2839 | unsigned int tid = GET_TID(req); |
cfdda9d7 | 2840 | |
944661dd H |
2841 | ep = get_ep_from_tid(dev, tid); |
2842 | if (!ep) | |
2843 | return 0; | |
2844 | ||
7a2cea2a | 2845 | if (is_neg_adv(req->status)) { |
179d03bb H |
2846 | PDBG("%s Negative advice on abort- tid %u status %d (%s)\n", |
2847 | __func__, ep->hwtid, req->status, | |
2848 | neg_adv_str(req->status)); | |
2849 | ep->stats.abort_neg_adv++; | |
2850 | mutex_lock(&dev->rdev.stats.lock); | |
2851 | dev->rdev.stats.neg_adv++; | |
2852 | mutex_unlock(&dev->rdev.stats.lock); | |
944661dd | 2853 | goto deref_ep; |
cfdda9d7 | 2854 | } |
cfdda9d7 SW |
2855 | PDBG("%s ep %p tid %u state %u\n", __func__, ep, ep->hwtid, |
2856 | ep->com.state); | |
793dad94 | 2857 | set_bit(PEER_ABORT, &ep->com.history); |
2f5b48c3 SW |
2858 | |
2859 | /* | |
2860 | * Wake up any threads in rdma_init() or rdma_fini(). | |
d2fe99e8 KS |
2861 | * However, this is not needed if com state is just |
2862 | * MPA_REQ_SENT | |
2f5b48c3 | 2863 | */ |
d2fe99e8 KS |
2864 | if (ep->com.state != MPA_REQ_SENT) |
2865 | c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); | |
2f5b48c3 SW |
2866 | |
2867 | mutex_lock(&ep->com.mutex); | |
cfdda9d7 SW |
2868 | switch (ep->com.state) { |
2869 | case CONNECTING: | |
9dec900c | 2870 | c4iw_put_ep(&ep->parent_ep->com); |
cfdda9d7 SW |
2871 | break; |
2872 | case MPA_REQ_WAIT: | |
b33bd0cb | 2873 | (void)stop_ep_timer(ep); |
cfdda9d7 SW |
2874 | break; |
2875 | case MPA_REQ_SENT: | |
b33bd0cb | 2876 | (void)stop_ep_timer(ep); |
fe7e0a4d | 2877 | if (mpa_rev == 1 || (mpa_rev == 2 && ep->tried_with_mpa_v1)) |
d2fe99e8 KS |
2878 | connect_reply_upcall(ep, -ECONNRESET); |
2879 | else { | |
2880 | /* | |
2881 | * we just don't send notification upwards because we | |
2882 | * want to retry with mpa_v1 without upper layers even | |
2883 | * knowing it. | |
2884 | * | |
2885 | * do some housekeeping so as to re-initiate the | |
2886 | * connection | |
2887 | */ | |
2888 | PDBG("%s: mpa_rev=%d. Retrying with mpav1\n", __func__, | |
2889 | mpa_rev); | |
2890 | ep->retry_with_mpa_v1 = 1; | |
2891 | } | |
cfdda9d7 SW |
2892 | break; |
2893 | case MPA_REP_SENT: | |
cfdda9d7 SW |
2894 | break; |
2895 | case MPA_REQ_RCVD: | |
cfdda9d7 SW |
2896 | break; |
2897 | case MORIBUND: | |
2898 | case CLOSING: | |
ca5a2202 | 2899 | stop_ep_timer(ep); |
cfdda9d7 SW |
2900 | /*FALLTHROUGH*/ |
2901 | case FPDU_MODE: | |
2902 | if (ep->com.cm_id && ep->com.qp) { | |
2903 | attrs.next_state = C4IW_QP_STATE_ERROR; | |
2904 | ret = c4iw_modify_qp(ep->com.qp->rhp, | |
2905 | ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, | |
2906 | &attrs, 1); | |
2907 | if (ret) | |
2908 | printk(KERN_ERR MOD | |
2909 | "%s - qp <- error failed!\n", | |
2910 | __func__); | |
2911 | } | |
2912 | peer_abort_upcall(ep); | |
2913 | break; | |
2914 | case ABORTING: | |
2915 | break; | |
2916 | case DEAD: | |
2917 | PDBG("%s PEER_ABORT IN DEAD STATE!!!!\n", __func__); | |
2f5b48c3 | 2918 | mutex_unlock(&ep->com.mutex); |
944661dd | 2919 | goto deref_ep; |
cfdda9d7 SW |
2920 | default: |
2921 | BUG_ON(1); | |
2922 | break; | |
2923 | } | |
2924 | dst_confirm(ep->dst); | |
2925 | if (ep->com.state != ABORTING) { | |
2926 | __state_set(&ep->com, DEAD); | |
d2fe99e8 KS |
2927 | /* we don't release if we want to retry with mpa_v1 */ |
2928 | if (!ep->retry_with_mpa_v1) | |
2929 | release = 1; | |
cfdda9d7 | 2930 | } |
2f5b48c3 | 2931 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 | 2932 | |
4a740838 H |
2933 | rpl_skb = skb_dequeue(&ep->com.ep_skb_list); |
2934 | if (WARN_ON(!rpl_skb)) { | |
cfdda9d7 SW |
2935 | release = 1; |
2936 | goto out; | |
2937 | } | |
2938 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
2939 | rpl = (struct cpl_abort_rpl *) skb_put(rpl_skb, sizeof(*rpl)); | |
2940 | INIT_TP_WR(rpl, ep->hwtid); | |
2941 | OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_RPL, ep->hwtid)); | |
2942 | rpl->cmd = CPL_ABORT_NO_RST; | |
2943 | c4iw_ofld_send(&ep->com.dev->rdev, rpl_skb); | |
2944 | out: | |
cfdda9d7 SW |
2945 | if (release) |
2946 | release_ep_resources(ep); | |
fe7e0a4d | 2947 | else if (ep->retry_with_mpa_v1) { |
84cc6ac6 H |
2948 | if (ep->com.remote_addr.ss_family == AF_INET6) { |
2949 | struct sockaddr_in6 *sin6 = | |
2950 | (struct sockaddr_in6 *) | |
170003c8 | 2951 | &ep->com.local_addr; |
84cc6ac6 H |
2952 | cxgb4_clip_release( |
2953 | ep->com.dev->rdev.lldi.ports[0], | |
2954 | (const u32 *)&sin6->sin6_addr.s6_addr, | |
2955 | 1); | |
2956 | } | |
fe7e0a4d | 2957 | remove_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep->hwtid); |
d2fe99e8 KS |
2958 | cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid); |
2959 | dst_release(ep->dst); | |
2960 | cxgb4_l2t_release(ep->l2t); | |
2961 | c4iw_reconnect(ep); | |
2962 | } | |
2963 | ||
944661dd H |
2964 | deref_ep: |
2965 | c4iw_put_ep(&ep->com); | |
2966 | /* Dereferencing ep, referenced in peer_abort_intr() */ | |
2967 | c4iw_put_ep(&ep->com); | |
cfdda9d7 SW |
2968 | return 0; |
2969 | } | |
2970 | ||
2971 | static int close_con_rpl(struct c4iw_dev *dev, struct sk_buff *skb) | |
2972 | { | |
2973 | struct c4iw_ep *ep; | |
2974 | struct c4iw_qp_attributes attrs; | |
2975 | struct cpl_close_con_rpl *rpl = cplhdr(skb); | |
cfdda9d7 | 2976 | int release = 0; |
cfdda9d7 | 2977 | unsigned int tid = GET_TID(rpl); |
cfdda9d7 | 2978 | |
944661dd H |
2979 | ep = get_ep_from_tid(dev, tid); |
2980 | if (!ep) | |
2981 | return 0; | |
cfdda9d7 SW |
2982 | |
2983 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
2984 | BUG_ON(!ep); | |
2985 | ||
2986 | /* The cm_id may be null if we failed to connect */ | |
2f5b48c3 | 2987 | mutex_lock(&ep->com.mutex); |
9ca6f7cf | 2988 | set_bit(CLOSE_CON_RPL, &ep->com.history); |
cfdda9d7 SW |
2989 | switch (ep->com.state) { |
2990 | case CLOSING: | |
2991 | __state_set(&ep->com, MORIBUND); | |
2992 | break; | |
2993 | case MORIBUND: | |
b33bd0cb | 2994 | (void)stop_ep_timer(ep); |
cfdda9d7 SW |
2995 | if ((ep->com.cm_id) && (ep->com.qp)) { |
2996 | attrs.next_state = C4IW_QP_STATE_IDLE; | |
2997 | c4iw_modify_qp(ep->com.qp->rhp, | |
2998 | ep->com.qp, | |
2999 | C4IW_QP_ATTR_NEXT_STATE, | |
3000 | &attrs, 1); | |
3001 | } | |
be13b2df | 3002 | close_complete_upcall(ep, 0); |
cfdda9d7 SW |
3003 | __state_set(&ep->com, DEAD); |
3004 | release = 1; | |
3005 | break; | |
3006 | case ABORTING: | |
3007 | case DEAD: | |
3008 | break; | |
3009 | default: | |
3010 | BUG_ON(1); | |
3011 | break; | |
3012 | } | |
2f5b48c3 | 3013 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
3014 | if (release) |
3015 | release_ep_resources(ep); | |
944661dd | 3016 | c4iw_put_ep(&ep->com); |
cfdda9d7 SW |
3017 | return 0; |
3018 | } | |
3019 | ||
3020 | static int terminate(struct c4iw_dev *dev, struct sk_buff *skb) | |
3021 | { | |
0e42c1f4 | 3022 | struct cpl_rdma_terminate *rpl = cplhdr(skb); |
0e42c1f4 SW |
3023 | unsigned int tid = GET_TID(rpl); |
3024 | struct c4iw_ep *ep; | |
3025 | struct c4iw_qp_attributes attrs; | |
cfdda9d7 | 3026 | |
944661dd | 3027 | ep = get_ep_from_tid(dev, tid); |
0e42c1f4 | 3028 | BUG_ON(!ep); |
cfdda9d7 | 3029 | |
30c95c2d | 3030 | if (ep && ep->com.qp) { |
0e42c1f4 SW |
3031 | printk(KERN_WARNING MOD "TERM received tid %u qpid %u\n", tid, |
3032 | ep->com.qp->wq.sq.qid); | |
3033 | attrs.next_state = C4IW_QP_STATE_TERMINATE; | |
3034 | c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, | |
3035 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); | |
3036 | } else | |
30c95c2d | 3037 | printk(KERN_WARNING MOD "TERM received tid %u no ep/qp\n", tid); |
944661dd | 3038 | c4iw_put_ep(&ep->com); |
cfdda9d7 | 3039 | |
cfdda9d7 SW |
3040 | return 0; |
3041 | } | |
3042 | ||
3043 | /* | |
3044 | * Upcall from the adapter indicating data has been transmitted. | |
3045 | * For us its just the single MPA request or reply. We can now free | |
3046 | * the skb holding the mpa message. | |
3047 | */ | |
3048 | static int fw4_ack(struct c4iw_dev *dev, struct sk_buff *skb) | |
3049 | { | |
3050 | struct c4iw_ep *ep; | |
3051 | struct cpl_fw4_ack *hdr = cplhdr(skb); | |
3052 | u8 credits = hdr->credits; | |
3053 | unsigned int tid = GET_TID(hdr); | |
cfdda9d7 SW |
3054 | |
3055 | ||
944661dd H |
3056 | ep = get_ep_from_tid(dev, tid); |
3057 | if (!ep) | |
3058 | return 0; | |
cfdda9d7 SW |
3059 | PDBG("%s ep %p tid %u credits %u\n", __func__, ep, ep->hwtid, credits); |
3060 | if (credits == 0) { | |
aa1ad260 JP |
3061 | PDBG("%s 0 credit ack ep %p tid %u state %u\n", |
3062 | __func__, ep, ep->hwtid, state_read(&ep->com)); | |
944661dd | 3063 | goto out; |
cfdda9d7 SW |
3064 | } |
3065 | ||
3066 | dst_confirm(ep->dst); | |
3067 | if (ep->mpa_skb) { | |
3068 | PDBG("%s last streaming msg ack ep %p tid %u state %u " | |
3069 | "initiator %u freeing skb\n", __func__, ep, ep->hwtid, | |
3070 | state_read(&ep->com), ep->mpa_attr.initiator ? 1 : 0); | |
12eb5137 | 3071 | mutex_lock(&ep->com.mutex); |
cfdda9d7 SW |
3072 | kfree_skb(ep->mpa_skb); |
3073 | ep->mpa_skb = NULL; | |
e4b76a2a H |
3074 | if (test_bit(STOP_MPA_TIMER, &ep->com.flags)) |
3075 | stop_ep_timer(ep); | |
3076 | mutex_unlock(&ep->com.mutex); | |
cfdda9d7 | 3077 | } |
944661dd H |
3078 | out: |
3079 | c4iw_put_ep(&ep->com); | |
cfdda9d7 SW |
3080 | return 0; |
3081 | } | |
3082 | ||
cfdda9d7 SW |
3083 | int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) |
3084 | { | |
bce2841f | 3085 | int abort; |
cfdda9d7 | 3086 | struct c4iw_ep *ep = to_ep(cm_id); |
bce2841f | 3087 | |
cfdda9d7 SW |
3088 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
3089 | ||
a7db89eb | 3090 | mutex_lock(&ep->com.mutex); |
e8667a9b | 3091 | if (ep->com.state != MPA_REQ_RCVD) { |
a7db89eb | 3092 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
3093 | c4iw_put_ep(&ep->com); |
3094 | return -ECONNRESET; | |
3095 | } | |
793dad94 | 3096 | set_bit(ULP_REJECT, &ep->com.history); |
cfdda9d7 | 3097 | if (mpa_rev == 0) |
bce2841f H |
3098 | abort = 1; |
3099 | else | |
3100 | abort = send_mpa_reject(ep, pdata, pdata_len); | |
a7db89eb | 3101 | mutex_unlock(&ep->com.mutex); |
bce2841f H |
3102 | |
3103 | stop_ep_timer(ep); | |
3104 | c4iw_ep_disconnect(ep, abort != 0, GFP_KERNEL); | |
cfdda9d7 SW |
3105 | c4iw_put_ep(&ep->com); |
3106 | return 0; | |
3107 | } | |
3108 | ||
3109 | int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) | |
3110 | { | |
3111 | int err; | |
3112 | struct c4iw_qp_attributes attrs; | |
3113 | enum c4iw_qp_attr_mask mask; | |
3114 | struct c4iw_ep *ep = to_ep(cm_id); | |
3115 | struct c4iw_dev *h = to_c4iw_dev(cm_id->device); | |
3116 | struct c4iw_qp *qp = get_qhp(h, conn_param->qpn); | |
eaf4c6d4 | 3117 | int abort = 0; |
cfdda9d7 SW |
3118 | |
3119 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
a7db89eb SW |
3120 | |
3121 | mutex_lock(&ep->com.mutex); | |
e8667a9b | 3122 | if (ep->com.state != MPA_REQ_RCVD) { |
cfdda9d7 | 3123 | err = -ECONNRESET; |
eaf4c6d4 | 3124 | goto err_out; |
cfdda9d7 SW |
3125 | } |
3126 | ||
cfdda9d7 SW |
3127 | BUG_ON(!qp); |
3128 | ||
793dad94 | 3129 | set_bit(ULP_ACCEPT, &ep->com.history); |
4c2c5763 HS |
3130 | if ((conn_param->ord > cur_max_read_depth(ep->com.dev)) || |
3131 | (conn_param->ird > cur_max_read_depth(ep->com.dev))) { | |
cfdda9d7 | 3132 | err = -EINVAL; |
eaf4c6d4 | 3133 | goto err_abort; |
cfdda9d7 SW |
3134 | } |
3135 | ||
d2fe99e8 KS |
3136 | if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { |
3137 | if (conn_param->ord > ep->ird) { | |
4c2c5763 HS |
3138 | if (RELAXED_IRD_NEGOTIATION) { |
3139 | ep->ord = ep->ird; | |
3140 | } else { | |
3141 | ep->ird = conn_param->ird; | |
3142 | ep->ord = conn_param->ord; | |
3143 | send_mpa_reject(ep, conn_param->private_data, | |
3144 | conn_param->private_data_len); | |
4c2c5763 | 3145 | err = -ENOMEM; |
eaf4c6d4 | 3146 | goto err_abort; |
4c2c5763 | 3147 | } |
d2fe99e8 | 3148 | } |
4c2c5763 HS |
3149 | if (conn_param->ird < ep->ord) { |
3150 | if (RELAXED_IRD_NEGOTIATION && | |
3151 | ep->ord <= h->rdev.lldi.max_ordird_qp) { | |
3152 | conn_param->ird = ep->ord; | |
3153 | } else { | |
d2fe99e8 | 3154 | err = -ENOMEM; |
eaf4c6d4 | 3155 | goto err_abort; |
d2fe99e8 KS |
3156 | } |
3157 | } | |
d2fe99e8 | 3158 | } |
cfdda9d7 SW |
3159 | ep->ird = conn_param->ird; |
3160 | ep->ord = conn_param->ord; | |
3161 | ||
4c2c5763 | 3162 | if (ep->mpa_attr.version == 1) { |
d2fe99e8 KS |
3163 | if (peer2peer && ep->ird == 0) |
3164 | ep->ird = 1; | |
4c2c5763 HS |
3165 | } else { |
3166 | if (peer2peer && | |
3167 | (ep->mpa_attr.p2p_type != FW_RI_INIT_P2PTYPE_DISABLED) && | |
f57b780c | 3168 | (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) && ep->ird == 0) |
4c2c5763 HS |
3169 | ep->ird = 1; |
3170 | } | |
cfdda9d7 SW |
3171 | |
3172 | PDBG("%s %d ird %d ord %d\n", __func__, __LINE__, ep->ird, ep->ord); | |
3173 | ||
d2fe99e8 | 3174 | ep->com.cm_id = cm_id; |
9ca6f7cf | 3175 | ref_cm_id(&ep->com); |
d2fe99e8 | 3176 | ep->com.qp = qp; |
325abead | 3177 | ref_qp(ep); |
d2fe99e8 | 3178 | |
cfdda9d7 SW |
3179 | /* bind QP to EP and move to RTS */ |
3180 | attrs.mpa_attr = ep->mpa_attr; | |
3181 | attrs.max_ird = ep->ird; | |
3182 | attrs.max_ord = ep->ord; | |
3183 | attrs.llp_stream_handle = ep; | |
3184 | attrs.next_state = C4IW_QP_STATE_RTS; | |
3185 | ||
3186 | /* bind QP and TID with INIT_WR */ | |
3187 | mask = C4IW_QP_ATTR_NEXT_STATE | | |
3188 | C4IW_QP_ATTR_LLP_STREAM_HANDLE | | |
3189 | C4IW_QP_ATTR_MPA_ATTR | | |
3190 | C4IW_QP_ATTR_MAX_IRD | | |
3191 | C4IW_QP_ATTR_MAX_ORD; | |
3192 | ||
3193 | err = c4iw_modify_qp(ep->com.qp->rhp, | |
3194 | ep->com.qp, mask, &attrs, 1); | |
3195 | if (err) | |
eaf4c6d4 | 3196 | goto err_deref_cm_id; |
e4b76a2a H |
3197 | |
3198 | set_bit(STOP_MPA_TIMER, &ep->com.flags); | |
cfdda9d7 SW |
3199 | err = send_mpa_reply(ep, conn_param->private_data, |
3200 | conn_param->private_data_len); | |
3201 | if (err) | |
eaf4c6d4 | 3202 | goto err_deref_cm_id; |
cfdda9d7 | 3203 | |
a7db89eb | 3204 | __state_set(&ep->com, FPDU_MODE); |
cfdda9d7 | 3205 | established_upcall(ep); |
a7db89eb | 3206 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
3207 | c4iw_put_ep(&ep->com); |
3208 | return 0; | |
eaf4c6d4 | 3209 | err_deref_cm_id: |
9ca6f7cf | 3210 | deref_cm_id(&ep->com); |
eaf4c6d4 H |
3211 | err_abort: |
3212 | abort = 1; | |
3213 | err_out: | |
a7db89eb | 3214 | mutex_unlock(&ep->com.mutex); |
eaf4c6d4 H |
3215 | if (abort) |
3216 | c4iw_ep_disconnect(ep, 1, GFP_KERNEL); | |
cfdda9d7 SW |
3217 | c4iw_put_ep(&ep->com); |
3218 | return err; | |
3219 | } | |
3220 | ||
830662f6 VP |
3221 | static int pick_local_ipaddrs(struct c4iw_dev *dev, struct iw_cm_id *cm_id) |
3222 | { | |
3223 | struct in_device *ind; | |
3224 | int found = 0; | |
170003c8 SW |
3225 | struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->m_local_addr; |
3226 | struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->m_remote_addr; | |
830662f6 VP |
3227 | |
3228 | ind = in_dev_get(dev->rdev.lldi.ports[0]); | |
3229 | if (!ind) | |
3230 | return -EADDRNOTAVAIL; | |
3231 | for_primary_ifa(ind) { | |
3232 | laddr->sin_addr.s_addr = ifa->ifa_address; | |
3233 | raddr->sin_addr.s_addr = ifa->ifa_address; | |
3234 | found = 1; | |
3235 | break; | |
3236 | } | |
3237 | endfor_ifa(ind); | |
3238 | in_dev_put(ind); | |
3239 | return found ? 0 : -EADDRNOTAVAIL; | |
3240 | } | |
3241 | ||
3242 | static int get_lladdr(struct net_device *dev, struct in6_addr *addr, | |
3243 | unsigned char banned_flags) | |
3244 | { | |
3245 | struct inet6_dev *idev; | |
3246 | int err = -EADDRNOTAVAIL; | |
3247 | ||
3248 | rcu_read_lock(); | |
3249 | idev = __in6_dev_get(dev); | |
3250 | if (idev != NULL) { | |
3251 | struct inet6_ifaddr *ifp; | |
3252 | ||
3253 | read_lock_bh(&idev->lock); | |
3254 | list_for_each_entry(ifp, &idev->addr_list, if_list) { | |
3255 | if (ifp->scope == IFA_LINK && | |
3256 | !(ifp->flags & banned_flags)) { | |
3257 | memcpy(addr, &ifp->addr, 16); | |
3258 | err = 0; | |
3259 | break; | |
3260 | } | |
3261 | } | |
3262 | read_unlock_bh(&idev->lock); | |
3263 | } | |
3264 | rcu_read_unlock(); | |
3265 | return err; | |
3266 | } | |
3267 | ||
3268 | static int pick_local_ip6addrs(struct c4iw_dev *dev, struct iw_cm_id *cm_id) | |
3269 | { | |
3270 | struct in6_addr uninitialized_var(addr); | |
170003c8 SW |
3271 | struct sockaddr_in6 *la6 = (struct sockaddr_in6 *)&cm_id->m_local_addr; |
3272 | struct sockaddr_in6 *ra6 = (struct sockaddr_in6 *)&cm_id->m_remote_addr; | |
830662f6 | 3273 | |
54b9a96f | 3274 | if (!get_lladdr(dev->rdev.lldi.ports[0], &addr, IFA_F_TENTATIVE)) { |
830662f6 VP |
3275 | memcpy(la6->sin6_addr.s6_addr, &addr, 16); |
3276 | memcpy(ra6->sin6_addr.s6_addr, &addr, 16); | |
3277 | return 0; | |
3278 | } | |
3279 | return -EADDRNOTAVAIL; | |
3280 | } | |
3281 | ||
cfdda9d7 SW |
3282 | int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) |
3283 | { | |
cfdda9d7 SW |
3284 | struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); |
3285 | struct c4iw_ep *ep; | |
3786cf18 | 3286 | int err = 0; |
9eccfe10 SW |
3287 | struct sockaddr_in *laddr; |
3288 | struct sockaddr_in *raddr; | |
3289 | struct sockaddr_in6 *laddr6; | |
3290 | struct sockaddr_in6 *raddr6; | |
830662f6 VP |
3291 | __u8 *ra; |
3292 | int iptype; | |
cfdda9d7 | 3293 | |
4c2c5763 HS |
3294 | if ((conn_param->ord > cur_max_read_depth(dev)) || |
3295 | (conn_param->ird > cur_max_read_depth(dev))) { | |
be4c9bad RD |
3296 | err = -EINVAL; |
3297 | goto out; | |
3298 | } | |
cfdda9d7 SW |
3299 | ep = alloc_ep(sizeof(*ep), GFP_KERNEL); |
3300 | if (!ep) { | |
3301 | printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__); | |
3302 | err = -ENOMEM; | |
3303 | goto out; | |
3304 | } | |
4a740838 H |
3305 | |
3306 | skb_queue_head_init(&ep->com.ep_skb_list); | |
3307 | if (alloc_ep_skb_list(&ep->com.ep_skb_list, CN_MAX_CON_BUF)) { | |
3308 | err = -ENOMEM; | |
3309 | goto fail1; | |
3310 | } | |
3311 | ||
cfdda9d7 SW |
3312 | init_timer(&ep->timer); |
3313 | ep->plen = conn_param->private_data_len; | |
3314 | if (ep->plen) | |
3315 | memcpy(ep->mpa_pkt + sizeof(struct mpa_message), | |
3316 | conn_param->private_data, ep->plen); | |
3317 | ep->ird = conn_param->ird; | |
3318 | ep->ord = conn_param->ord; | |
3319 | ||
3320 | if (peer2peer && ep->ord == 0) | |
3321 | ep->ord = 1; | |
3322 | ||
cfdda9d7 | 3323 | ep->com.cm_id = cm_id; |
9ca6f7cf H |
3324 | ref_cm_id(&ep->com); |
3325 | ep->com.dev = dev; | |
cfdda9d7 | 3326 | ep->com.qp = get_qhp(dev, conn_param->qpn); |
830662f6 VP |
3327 | if (!ep->com.qp) { |
3328 | PDBG("%s qpn 0x%x not found!\n", __func__, conn_param->qpn); | |
3329 | err = -EINVAL; | |
4a740838 | 3330 | goto fail2; |
830662f6 | 3331 | } |
325abead | 3332 | ref_qp(ep); |
cfdda9d7 SW |
3333 | PDBG("%s qpn 0x%x qp %p cm_id %p\n", __func__, conn_param->qpn, |
3334 | ep->com.qp, cm_id); | |
3335 | ||
3336 | /* | |
3337 | * Allocate an active TID to initiate a TCP connection. | |
3338 | */ | |
3339 | ep->atid = cxgb4_alloc_atid(dev->rdev.lldi.tids, ep); | |
3340 | if (ep->atid == -1) { | |
3341 | printk(KERN_ERR MOD "%s - cannot alloc atid.\n", __func__); | |
3342 | err = -ENOMEM; | |
4a740838 | 3343 | goto fail2; |
cfdda9d7 | 3344 | } |
793dad94 | 3345 | insert_handle(dev, &dev->atid_idr, ep, ep->atid); |
cfdda9d7 | 3346 | |
170003c8 | 3347 | memcpy(&ep->com.local_addr, &cm_id->m_local_addr, |
9eccfe10 | 3348 | sizeof(ep->com.local_addr)); |
170003c8 | 3349 | memcpy(&ep->com.remote_addr, &cm_id->m_remote_addr, |
9eccfe10 SW |
3350 | sizeof(ep->com.remote_addr)); |
3351 | ||
170003c8 SW |
3352 | laddr = (struct sockaddr_in *)&ep->com.local_addr; |
3353 | raddr = (struct sockaddr_in *)&ep->com.remote_addr; | |
3354 | laddr6 = (struct sockaddr_in6 *)&ep->com.local_addr; | |
3355 | raddr6 = (struct sockaddr_in6 *) &ep->com.remote_addr; | |
9eccfe10 | 3356 | |
170003c8 | 3357 | if (cm_id->m_remote_addr.ss_family == AF_INET) { |
830662f6 VP |
3358 | iptype = 4; |
3359 | ra = (__u8 *)&raddr->sin_addr; | |
cfdda9d7 | 3360 | |
830662f6 VP |
3361 | /* |
3362 | * Handle loopback requests to INADDR_ANY. | |
3363 | */ | |
ba987e51 | 3364 | if (raddr->sin_addr.s_addr == htonl(INADDR_ANY)) { |
830662f6 VP |
3365 | err = pick_local_ipaddrs(dev, cm_id); |
3366 | if (err) | |
4a740838 | 3367 | goto fail2; |
830662f6 VP |
3368 | } |
3369 | ||
3370 | /* find a route */ | |
3371 | PDBG("%s saddr %pI4 sport 0x%x raddr %pI4 rport 0x%x\n", | |
3372 | __func__, &laddr->sin_addr, ntohs(laddr->sin_port), | |
3373 | ra, ntohs(raddr->sin_port)); | |
3374 | ep->dst = find_route(dev, laddr->sin_addr.s_addr, | |
3375 | raddr->sin_addr.s_addr, laddr->sin_port, | |
ac8e4c69 | 3376 | raddr->sin_port, cm_id->tos); |
830662f6 VP |
3377 | } else { |
3378 | iptype = 6; | |
3379 | ra = (__u8 *)&raddr6->sin6_addr; | |
3380 | ||
3381 | /* | |
3382 | * Handle loopback requests to INADDR_ANY. | |
3383 | */ | |
3384 | if (ipv6_addr_type(&raddr6->sin6_addr) == IPV6_ADDR_ANY) { | |
3385 | err = pick_local_ip6addrs(dev, cm_id); | |
3386 | if (err) | |
4a740838 | 3387 | goto fail2; |
830662f6 VP |
3388 | } |
3389 | ||
3390 | /* find a route */ | |
3391 | PDBG("%s saddr %pI6 sport 0x%x raddr %pI6 rport 0x%x\n", | |
3392 | __func__, laddr6->sin6_addr.s6_addr, | |
3393 | ntohs(laddr6->sin6_port), | |
3394 | raddr6->sin6_addr.s6_addr, ntohs(raddr6->sin6_port)); | |
3395 | ep->dst = find_route6(dev, laddr6->sin6_addr.s6_addr, | |
3396 | raddr6->sin6_addr.s6_addr, | |
3397 | laddr6->sin6_port, raddr6->sin6_port, 0, | |
3398 | raddr6->sin6_scope_id); | |
3399 | } | |
3400 | if (!ep->dst) { | |
cfdda9d7 SW |
3401 | printk(KERN_ERR MOD "%s - cannot find route.\n", __func__); |
3402 | err = -EHOSTUNREACH; | |
4a740838 | 3403 | goto fail3; |
cfdda9d7 | 3404 | } |
cfdda9d7 | 3405 | |
963cab50 | 3406 | err = import_ep(ep, iptype, ra, ep->dst, ep->com.dev, true, |
ac8e4c69 | 3407 | ep->com.dev->rdev.lldi.adapter_type, cm_id->tos); |
3786cf18 | 3408 | if (err) { |
cfdda9d7 | 3409 | printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __func__); |
4a740838 | 3410 | goto fail4; |
cfdda9d7 SW |
3411 | } |
3412 | ||
3413 | PDBG("%s txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n", | |
3414 | __func__, ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid, | |
3415 | ep->l2t->idx); | |
3416 | ||
3417 | state_set(&ep->com, CONNECTING); | |
ac8e4c69 | 3418 | ep->tos = cm_id->tos; |
cfdda9d7 SW |
3419 | |
3420 | /* send connect request to rnic */ | |
3421 | err = send_connect(ep); | |
3422 | if (!err) | |
3423 | goto out; | |
3424 | ||
3425 | cxgb4_l2t_release(ep->l2t); | |
4a740838 | 3426 | fail4: |
9eccfe10 | 3427 | dst_release(ep->dst); |
4a740838 | 3428 | fail3: |
793dad94 | 3429 | remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid); |
cfdda9d7 | 3430 | cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid); |
4a740838 H |
3431 | fail2: |
3432 | skb_queue_purge(&ep->com.ep_skb_list); | |
9ca6f7cf | 3433 | deref_cm_id(&ep->com); |
4a740838 | 3434 | fail1: |
cfdda9d7 SW |
3435 | c4iw_put_ep(&ep->com); |
3436 | out: | |
3437 | return err; | |
3438 | } | |
3439 | ||
830662f6 VP |
3440 | static int create_server6(struct c4iw_dev *dev, struct c4iw_listen_ep *ep) |
3441 | { | |
3442 | int err; | |
9eccfe10 | 3443 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) |
170003c8 | 3444 | &ep->com.local_addr; |
830662f6 | 3445 | |
28de1f74 H |
3446 | if (ipv6_addr_type(&sin6->sin6_addr) != IPV6_ADDR_ANY) { |
3447 | err = cxgb4_clip_get(ep->com.dev->rdev.lldi.ports[0], | |
3448 | (const u32 *)&sin6->sin6_addr.s6_addr, 1); | |
3449 | if (err) | |
3450 | return err; | |
3451 | } | |
830662f6 VP |
3452 | c4iw_init_wr_wait(&ep->com.wr_wait); |
3453 | err = cxgb4_create_server6(ep->com.dev->rdev.lldi.ports[0], | |
3454 | ep->stid, &sin6->sin6_addr, | |
3455 | sin6->sin6_port, | |
3456 | ep->com.dev->rdev.lldi.rxq_ids[0]); | |
3457 | if (!err) | |
3458 | err = c4iw_wait_for_reply(&ep->com.dev->rdev, | |
3459 | &ep->com.wr_wait, | |
3460 | 0, 0, __func__); | |
e6b11163 H |
3461 | else if (err > 0) |
3462 | err = net_xmit_errno(err); | |
28de1f74 H |
3463 | if (err) { |
3464 | cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0], | |
3465 | (const u32 *)&sin6->sin6_addr.s6_addr, 1); | |
830662f6 VP |
3466 | pr_err("cxgb4_create_server6/filter failed err %d stid %d laddr %pI6 lport %d\n", |
3467 | err, ep->stid, | |
3468 | sin6->sin6_addr.s6_addr, ntohs(sin6->sin6_port)); | |
28de1f74 | 3469 | } |
830662f6 VP |
3470 | return err; |
3471 | } | |
3472 | ||
3473 | static int create_server4(struct c4iw_dev *dev, struct c4iw_listen_ep *ep) | |
3474 | { | |
3475 | int err; | |
9eccfe10 | 3476 | struct sockaddr_in *sin = (struct sockaddr_in *) |
170003c8 | 3477 | &ep->com.local_addr; |
830662f6 VP |
3478 | |
3479 | if (dev->rdev.lldi.enable_fw_ofld_conn) { | |
3480 | do { | |
3481 | err = cxgb4_create_server_filter( | |
3482 | ep->com.dev->rdev.lldi.ports[0], ep->stid, | |
3483 | sin->sin_addr.s_addr, sin->sin_port, 0, | |
3484 | ep->com.dev->rdev.lldi.rxq_ids[0], 0, 0); | |
3485 | if (err == -EBUSY) { | |
99718e59 H |
3486 | if (c4iw_fatal_error(&ep->com.dev->rdev)) { |
3487 | err = -EIO; | |
3488 | break; | |
3489 | } | |
830662f6 VP |
3490 | set_current_state(TASK_UNINTERRUPTIBLE); |
3491 | schedule_timeout(usecs_to_jiffies(100)); | |
3492 | } | |
3493 | } while (err == -EBUSY); | |
3494 | } else { | |
3495 | c4iw_init_wr_wait(&ep->com.wr_wait); | |
3496 | err = cxgb4_create_server(ep->com.dev->rdev.lldi.ports[0], | |
3497 | ep->stid, sin->sin_addr.s_addr, sin->sin_port, | |
3498 | 0, ep->com.dev->rdev.lldi.rxq_ids[0]); | |
3499 | if (!err) | |
3500 | err = c4iw_wait_for_reply(&ep->com.dev->rdev, | |
3501 | &ep->com.wr_wait, | |
3502 | 0, 0, __func__); | |
e6b11163 H |
3503 | else if (err > 0) |
3504 | err = net_xmit_errno(err); | |
830662f6 VP |
3505 | } |
3506 | if (err) | |
3507 | pr_err("cxgb4_create_server/filter failed err %d stid %d laddr %pI4 lport %d\n" | |
3508 | , err, ep->stid, | |
3509 | &sin->sin_addr, ntohs(sin->sin_port)); | |
3510 | return err; | |
3511 | } | |
3512 | ||
cfdda9d7 SW |
3513 | int c4iw_create_listen(struct iw_cm_id *cm_id, int backlog) |
3514 | { | |
3515 | int err = 0; | |
3516 | struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); | |
3517 | struct c4iw_listen_ep *ep; | |
3518 | ||
cfdda9d7 SW |
3519 | might_sleep(); |
3520 | ||
3521 | ep = alloc_ep(sizeof(*ep), GFP_KERNEL); | |
3522 | if (!ep) { | |
3523 | printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__); | |
3524 | err = -ENOMEM; | |
3525 | goto fail1; | |
3526 | } | |
4a740838 | 3527 | skb_queue_head_init(&ep->com.ep_skb_list); |
cfdda9d7 | 3528 | PDBG("%s ep %p\n", __func__, ep); |
cfdda9d7 | 3529 | ep->com.cm_id = cm_id; |
9ca6f7cf | 3530 | ref_cm_id(&ep->com); |
cfdda9d7 SW |
3531 | ep->com.dev = dev; |
3532 | ep->backlog = backlog; | |
170003c8 | 3533 | memcpy(&ep->com.local_addr, &cm_id->m_local_addr, |
24d44a39 | 3534 | sizeof(ep->com.local_addr)); |
cfdda9d7 SW |
3535 | |
3536 | /* | |
3537 | * Allocate a server TID. | |
3538 | */ | |
8c044690 KS |
3539 | if (dev->rdev.lldi.enable_fw_ofld_conn && |
3540 | ep->com.local_addr.ss_family == AF_INET) | |
830662f6 | 3541 | ep->stid = cxgb4_alloc_sftid(dev->rdev.lldi.tids, |
170003c8 | 3542 | cm_id->m_local_addr.ss_family, ep); |
1cab775c | 3543 | else |
830662f6 | 3544 | ep->stid = cxgb4_alloc_stid(dev->rdev.lldi.tids, |
170003c8 | 3545 | cm_id->m_local_addr.ss_family, ep); |
1cab775c | 3546 | |
cfdda9d7 | 3547 | if (ep->stid == -1) { |
be4c9bad | 3548 | printk(KERN_ERR MOD "%s - cannot alloc stid.\n", __func__); |
cfdda9d7 SW |
3549 | err = -ENOMEM; |
3550 | goto fail2; | |
3551 | } | |
793dad94 | 3552 | insert_handle(dev, &dev->stid_idr, ep, ep->stid); |
9eccfe10 | 3553 | |
170003c8 SW |
3554 | memcpy(&ep->com.local_addr, &cm_id->m_local_addr, |
3555 | sizeof(ep->com.local_addr)); | |
9eccfe10 | 3556 | |
cfdda9d7 | 3557 | state_set(&ep->com, LISTEN); |
830662f6 VP |
3558 | if (ep->com.local_addr.ss_family == AF_INET) |
3559 | err = create_server4(dev, ep); | |
3560 | else | |
3561 | err = create_server6(dev, ep); | |
cfdda9d7 SW |
3562 | if (!err) { |
3563 | cm_id->provider_data = ep; | |
3564 | goto out; | |
3565 | } | |
9eccfe10 | 3566 | |
830662f6 VP |
3567 | cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid, |
3568 | ep->com.local_addr.ss_family); | |
cfdda9d7 | 3569 | fail2: |
9ca6f7cf | 3570 | deref_cm_id(&ep->com); |
cfdda9d7 SW |
3571 | c4iw_put_ep(&ep->com); |
3572 | fail1: | |
3573 | out: | |
3574 | return err; | |
3575 | } | |
3576 | ||
3577 | int c4iw_destroy_listen(struct iw_cm_id *cm_id) | |
3578 | { | |
3579 | int err; | |
3580 | struct c4iw_listen_ep *ep = to_listen_ep(cm_id); | |
3581 | ||
3582 | PDBG("%s ep %p\n", __func__, ep); | |
3583 | ||
3584 | might_sleep(); | |
3585 | state_set(&ep->com, DEAD); | |
830662f6 VP |
3586 | if (ep->com.dev->rdev.lldi.enable_fw_ofld_conn && |
3587 | ep->com.local_addr.ss_family == AF_INET) { | |
1cab775c VP |
3588 | err = cxgb4_remove_server_filter( |
3589 | ep->com.dev->rdev.lldi.ports[0], ep->stid, | |
3590 | ep->com.dev->rdev.lldi.rxq_ids[0], 0); | |
3591 | } else { | |
84cc6ac6 | 3592 | struct sockaddr_in6 *sin6; |
1cab775c | 3593 | c4iw_init_wr_wait(&ep->com.wr_wait); |
830662f6 VP |
3594 | err = cxgb4_remove_server( |
3595 | ep->com.dev->rdev.lldi.ports[0], ep->stid, | |
3596 | ep->com.dev->rdev.lldi.rxq_ids[0], 0); | |
1cab775c VP |
3597 | if (err) |
3598 | goto done; | |
3599 | err = c4iw_wait_for_reply(&ep->com.dev->rdev, &ep->com.wr_wait, | |
3600 | 0, 0, __func__); | |
170003c8 | 3601 | sin6 = (struct sockaddr_in6 *)&ep->com.local_addr; |
84cc6ac6 H |
3602 | cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0], |
3603 | (const u32 *)&sin6->sin6_addr.s6_addr, 1); | |
1cab775c | 3604 | } |
793dad94 | 3605 | remove_handle(ep->com.dev, &ep->com.dev->stid_idr, ep->stid); |
830662f6 VP |
3606 | cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid, |
3607 | ep->com.local_addr.ss_family); | |
cfdda9d7 | 3608 | done: |
9ca6f7cf | 3609 | deref_cm_id(&ep->com); |
cfdda9d7 SW |
3610 | c4iw_put_ep(&ep->com); |
3611 | return err; | |
3612 | } | |
3613 | ||
3614 | int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp) | |
3615 | { | |
3616 | int ret = 0; | |
cfdda9d7 SW |
3617 | int close = 0; |
3618 | int fatal = 0; | |
3619 | struct c4iw_rdev *rdev; | |
cfdda9d7 | 3620 | |
2f5b48c3 | 3621 | mutex_lock(&ep->com.mutex); |
cfdda9d7 SW |
3622 | |
3623 | PDBG("%s ep %p state %s, abrupt %d\n", __func__, ep, | |
3624 | states[ep->com.state], abrupt); | |
3625 | ||
6e410d8f H |
3626 | /* |
3627 | * Ref the ep here in case we have fatal errors causing the | |
3628 | * ep to be released and freed. | |
3629 | */ | |
3630 | c4iw_get_ep(&ep->com); | |
3631 | ||
cfdda9d7 SW |
3632 | rdev = &ep->com.dev->rdev; |
3633 | if (c4iw_fatal_error(rdev)) { | |
3634 | fatal = 1; | |
be13b2df | 3635 | close_complete_upcall(ep, -EIO); |
cfdda9d7 SW |
3636 | ep->com.state = DEAD; |
3637 | } | |
3638 | switch (ep->com.state) { | |
3639 | case MPA_REQ_WAIT: | |
3640 | case MPA_REQ_SENT: | |
3641 | case MPA_REQ_RCVD: | |
3642 | case MPA_REP_SENT: | |
3643 | case FPDU_MODE: | |
4a740838 | 3644 | case CONNECTING: |
cfdda9d7 SW |
3645 | close = 1; |
3646 | if (abrupt) | |
3647 | ep->com.state = ABORTING; | |
3648 | else { | |
3649 | ep->com.state = CLOSING; | |
12eb5137 SW |
3650 | |
3651 | /* | |
3652 | * if we close before we see the fw4_ack() then we fix | |
3653 | * up the timer state since we're reusing it. | |
3654 | */ | |
3655 | if (ep->mpa_skb && | |
3656 | test_bit(STOP_MPA_TIMER, &ep->com.flags)) { | |
3657 | clear_bit(STOP_MPA_TIMER, &ep->com.flags); | |
3658 | stop_ep_timer(ep); | |
3659 | } | |
ca5a2202 | 3660 | start_ep_timer(ep); |
cfdda9d7 SW |
3661 | } |
3662 | set_bit(CLOSE_SENT, &ep->com.flags); | |
3663 | break; | |
3664 | case CLOSING: | |
3665 | if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) { | |
3666 | close = 1; | |
3667 | if (abrupt) { | |
b33bd0cb | 3668 | (void)stop_ep_timer(ep); |
cfdda9d7 SW |
3669 | ep->com.state = ABORTING; |
3670 | } else | |
3671 | ep->com.state = MORIBUND; | |
3672 | } | |
3673 | break; | |
3674 | case MORIBUND: | |
3675 | case ABORTING: | |
3676 | case DEAD: | |
3677 | PDBG("%s ignoring disconnect ep %p state %u\n", | |
3678 | __func__, ep, ep->com.state); | |
3679 | break; | |
3680 | default: | |
3681 | BUG(); | |
3682 | break; | |
3683 | } | |
3684 | ||
cfdda9d7 | 3685 | if (close) { |
8da7e7a5 | 3686 | if (abrupt) { |
793dad94 | 3687 | set_bit(EP_DISC_ABORT, &ep->com.history); |
be13b2df | 3688 | close_complete_upcall(ep, -ECONNRESET); |
4a740838 | 3689 | ret = send_abort(ep); |
793dad94 VP |
3690 | } else { |
3691 | set_bit(EP_DISC_CLOSE, &ep->com.history); | |
4a740838 | 3692 | ret = send_halfclose(ep); |
793dad94 | 3693 | } |
88bc230d | 3694 | if (ret) { |
9ca6f7cf | 3695 | set_bit(EP_DISC_FAIL, &ep->com.history); |
88bc230d H |
3696 | if (!abrupt) { |
3697 | stop_ep_timer(ep); | |
3698 | close_complete_upcall(ep, -EIO); | |
3699 | } | |
c00dcbaf H |
3700 | if (ep->com.qp) { |
3701 | struct c4iw_qp_attributes attrs; | |
3702 | ||
3703 | attrs.next_state = C4IW_QP_STATE_ERROR; | |
3704 | ret = c4iw_modify_qp(ep->com.qp->rhp, | |
3705 | ep->com.qp, | |
3706 | C4IW_QP_ATTR_NEXT_STATE, | |
3707 | &attrs, 1); | |
3708 | if (ret) | |
3709 | pr_err(MOD | |
3710 | "%s - qp <- error failed!\n", | |
3711 | __func__); | |
3712 | } | |
cfdda9d7 | 3713 | fatal = 1; |
88bc230d | 3714 | } |
cfdda9d7 | 3715 | } |
8da7e7a5 | 3716 | mutex_unlock(&ep->com.mutex); |
6e410d8f | 3717 | c4iw_put_ep(&ep->com); |
cfdda9d7 SW |
3718 | if (fatal) |
3719 | release_ep_resources(ep); | |
3720 | return ret; | |
3721 | } | |
3722 | ||
1cab775c VP |
3723 | static void active_ofld_conn_reply(struct c4iw_dev *dev, struct sk_buff *skb, |
3724 | struct cpl_fw6_msg_ofld_connection_wr_rpl *req) | |
3725 | { | |
3726 | struct c4iw_ep *ep; | |
793dad94 | 3727 | int atid = be32_to_cpu(req->tid); |
1cab775c | 3728 | |
ef5d6355 VP |
3729 | ep = (struct c4iw_ep *)lookup_atid(dev->rdev.lldi.tids, |
3730 | (__force u32) req->tid); | |
1cab775c VP |
3731 | if (!ep) |
3732 | return; | |
3733 | ||
3734 | switch (req->retval) { | |
3735 | case FW_ENOMEM: | |
793dad94 VP |
3736 | set_bit(ACT_RETRY_NOMEM, &ep->com.history); |
3737 | if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) { | |
3738 | send_fw_act_open_req(ep, atid); | |
3739 | return; | |
3740 | } | |
1cab775c | 3741 | case FW_EADDRINUSE: |
793dad94 VP |
3742 | set_bit(ACT_RETRY_INUSE, &ep->com.history); |
3743 | if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) { | |
3744 | send_fw_act_open_req(ep, atid); | |
3745 | return; | |
3746 | } | |
1cab775c VP |
3747 | break; |
3748 | default: | |
3749 | pr_info("%s unexpected ofld conn wr retval %d\n", | |
3750 | __func__, req->retval); | |
3751 | break; | |
3752 | } | |
793dad94 VP |
3753 | pr_err("active ofld_connect_wr failure %d atid %d\n", |
3754 | req->retval, atid); | |
3755 | mutex_lock(&dev->rdev.stats.lock); | |
3756 | dev->rdev.stats.act_ofld_conn_fails++; | |
3757 | mutex_unlock(&dev->rdev.stats.lock); | |
1cab775c | 3758 | connect_reply_upcall(ep, status2errno(req->retval)); |
793dad94 | 3759 | state_set(&ep->com, DEAD); |
84cc6ac6 H |
3760 | if (ep->com.remote_addr.ss_family == AF_INET6) { |
3761 | struct sockaddr_in6 *sin6 = | |
170003c8 | 3762 | (struct sockaddr_in6 *)&ep->com.local_addr; |
84cc6ac6 H |
3763 | cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0], |
3764 | (const u32 *)&sin6->sin6_addr.s6_addr, 1); | |
3765 | } | |
793dad94 VP |
3766 | remove_handle(dev, &dev->atid_idr, atid); |
3767 | cxgb4_free_atid(dev->rdev.lldi.tids, atid); | |
3768 | dst_release(ep->dst); | |
3769 | cxgb4_l2t_release(ep->l2t); | |
3770 | c4iw_put_ep(&ep->com); | |
1cab775c VP |
3771 | } |
3772 | ||
3773 | static void passive_ofld_conn_reply(struct c4iw_dev *dev, struct sk_buff *skb, | |
3774 | struct cpl_fw6_msg_ofld_connection_wr_rpl *req) | |
3775 | { | |
3776 | struct sk_buff *rpl_skb; | |
3777 | struct cpl_pass_accept_req *cpl; | |
3778 | int ret; | |
3779 | ||
710a3110 | 3780 | rpl_skb = (struct sk_buff *)(unsigned long)req->cookie; |
1cab775c VP |
3781 | BUG_ON(!rpl_skb); |
3782 | if (req->retval) { | |
3783 | PDBG("%s passive open failure %d\n", __func__, req->retval); | |
793dad94 VP |
3784 | mutex_lock(&dev->rdev.stats.lock); |
3785 | dev->rdev.stats.pas_ofld_conn_fails++; | |
3786 | mutex_unlock(&dev->rdev.stats.lock); | |
1cab775c VP |
3787 | kfree_skb(rpl_skb); |
3788 | } else { | |
3789 | cpl = (struct cpl_pass_accept_req *)cplhdr(rpl_skb); | |
3790 | OPCODE_TID(cpl) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_REQ, | |
ef5d6355 VP |
3791 | (__force u32) htonl( |
3792 | (__force u32) req->tid))); | |
1cab775c VP |
3793 | ret = pass_accept_req(dev, rpl_skb); |
3794 | if (!ret) | |
3795 | kfree_skb(rpl_skb); | |
3796 | } | |
3797 | return; | |
3798 | } | |
3799 | ||
3800 | static int deferred_fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb) | |
2f5b48c3 SW |
3801 | { |
3802 | struct cpl_fw6_msg *rpl = cplhdr(skb); | |
1cab775c VP |
3803 | struct cpl_fw6_msg_ofld_connection_wr_rpl *req; |
3804 | ||
3805 | switch (rpl->type) { | |
3806 | case FW6_TYPE_CQE: | |
3807 | c4iw_ev_dispatch(dev, (struct t4_cqe *)&rpl->data[0]); | |
3808 | break; | |
3809 | case FW6_TYPE_OFLD_CONNECTION_WR_RPL: | |
3810 | req = (struct cpl_fw6_msg_ofld_connection_wr_rpl *)rpl->data; | |
3811 | switch (req->t_state) { | |
3812 | case TCP_SYN_SENT: | |
3813 | active_ofld_conn_reply(dev, skb, req); | |
3814 | break; | |
3815 | case TCP_SYN_RECV: | |
3816 | passive_ofld_conn_reply(dev, skb, req); | |
3817 | break; | |
3818 | default: | |
3819 | pr_err("%s unexpected ofld conn wr state %d\n", | |
3820 | __func__, req->t_state); | |
3821 | break; | |
3822 | } | |
3823 | break; | |
3824 | } | |
3825 | return 0; | |
3826 | } | |
3827 | ||
3828 | static void build_cpl_pass_accept_req(struct sk_buff *skb, int stid , u8 tos) | |
3829 | { | |
963cab50 H |
3830 | __be32 l2info; |
3831 | __be16 hdr_len, vlantag, len; | |
3832 | u16 eth_hdr_len; | |
3833 | int tcp_hdr_len, ip_hdr_len; | |
1cab775c VP |
3834 | u8 intf; |
3835 | struct cpl_rx_pkt *cpl = cplhdr(skb); | |
3836 | struct cpl_pass_accept_req *req; | |
3837 | struct tcp_options_received tmp_opt; | |
f079af7a | 3838 | struct c4iw_dev *dev; |
963cab50 | 3839 | enum chip_type type; |
1cab775c | 3840 | |
f079af7a | 3841 | dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *))); |
1cab775c | 3842 | /* Store values from cpl_rx_pkt in temporary location. */ |
963cab50 H |
3843 | vlantag = cpl->vlan; |
3844 | len = cpl->len; | |
3845 | l2info = cpl->l2info; | |
3846 | hdr_len = cpl->hdr_len; | |
1cab775c VP |
3847 | intf = cpl->iff; |
3848 | ||
3849 | __skb_pull(skb, sizeof(*req) + sizeof(struct rss_header)); | |
3850 | ||
3851 | /* | |
3852 | * We need to parse the TCP options from SYN packet. | |
3853 | * to generate cpl_pass_accept_req. | |
3854 | */ | |
3855 | memset(&tmp_opt, 0, sizeof(tmp_opt)); | |
3856 | tcp_clear_options(&tmp_opt); | |
1a2c6181 | 3857 | tcp_parse_options(skb, &tmp_opt, 0, NULL); |
1cab775c VP |
3858 | |
3859 | req = (struct cpl_pass_accept_req *)__skb_push(skb, sizeof(*req)); | |
3860 | memset(req, 0, sizeof(*req)); | |
cf7fe64a HS |
3861 | req->l2info = cpu_to_be16(SYN_INTF_V(intf) | |
3862 | SYN_MAC_IDX_V(RX_MACIDX_G( | |
963cab50 | 3863 | be32_to_cpu(l2info))) | |
cf7fe64a | 3864 | SYN_XACT_MATCH_F); |
963cab50 H |
3865 | type = dev->rdev.lldi.adapter_type; |
3866 | tcp_hdr_len = RX_TCPHDR_LEN_G(be16_to_cpu(hdr_len)); | |
3867 | ip_hdr_len = RX_IPHDR_LEN_G(be16_to_cpu(hdr_len)); | |
3868 | req->hdr_len = | |
3869 | cpu_to_be32(SYN_RX_CHAN_V(RX_CHAN_G(be32_to_cpu(l2info)))); | |
3870 | if (CHELSIO_CHIP_VERSION(type) <= CHELSIO_T5) { | |
3871 | eth_hdr_len = is_t4(type) ? | |
3872 | RX_ETHHDR_LEN_G(be32_to_cpu(l2info)) : | |
3873 | RX_T5_ETHHDR_LEN_G(be32_to_cpu(l2info)); | |
3874 | req->hdr_len |= cpu_to_be32(TCP_HDR_LEN_V(tcp_hdr_len) | | |
3875 | IP_HDR_LEN_V(ip_hdr_len) | | |
3876 | ETH_HDR_LEN_V(eth_hdr_len)); | |
3877 | } else { /* T6 and later */ | |
3878 | eth_hdr_len = RX_T6_ETHHDR_LEN_G(be32_to_cpu(l2info)); | |
3879 | req->hdr_len |= cpu_to_be32(T6_TCP_HDR_LEN_V(tcp_hdr_len) | | |
3880 | T6_IP_HDR_LEN_V(ip_hdr_len) | | |
3881 | T6_ETH_HDR_LEN_V(eth_hdr_len)); | |
3882 | } | |
3883 | req->vlan = vlantag; | |
3884 | req->len = len; | |
6c53e938 HS |
3885 | req->tos_stid = cpu_to_be32(PASS_OPEN_TID_V(stid) | |
3886 | PASS_OPEN_TOS_V(tos)); | |
1cab775c VP |
3887 | req->tcpopt.mss = htons(tmp_opt.mss_clamp); |
3888 | if (tmp_opt.wscale_ok) | |
3889 | req->tcpopt.wsf = tmp_opt.snd_wscale; | |
3890 | req->tcpopt.tstamp = tmp_opt.saw_tstamp; | |
3891 | if (tmp_opt.sack_ok) | |
3892 | req->tcpopt.sack = 1; | |
3893 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_REQ, 0)); | |
3894 | return; | |
3895 | } | |
3896 | ||
3897 | static void send_fw_pass_open_req(struct c4iw_dev *dev, struct sk_buff *skb, | |
3898 | __be32 laddr, __be16 lport, | |
3899 | __be32 raddr, __be16 rport, | |
3900 | u32 rcv_isn, u32 filter, u16 window, | |
3901 | u32 rss_qid, u8 port_id) | |
3902 | { | |
3903 | struct sk_buff *req_skb; | |
3904 | struct fw_ofld_connection_wr *req; | |
3905 | struct cpl_pass_accept_req *cpl = cplhdr(skb); | |
1ce1d471 | 3906 | int ret; |
1cab775c VP |
3907 | |
3908 | req_skb = alloc_skb(sizeof(struct fw_ofld_connection_wr), GFP_KERNEL); | |
3909 | req = (struct fw_ofld_connection_wr *)__skb_put(req_skb, sizeof(*req)); | |
3910 | memset(req, 0, sizeof(*req)); | |
6c53e938 | 3911 | req->op_compl = htonl(WR_OP_V(FW_OFLD_CONNECTION_WR) | FW_WR_COMPL_F); |
e2ac9628 | 3912 | req->len16_pkd = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*req), 16))); |
77a80e23 | 3913 | req->le.version_cpl = htonl(FW_OFLD_CONNECTION_WR_CPL_F); |
ef5d6355 | 3914 | req->le.filter = (__force __be32) filter; |
1cab775c VP |
3915 | req->le.lport = lport; |
3916 | req->le.pport = rport; | |
3917 | req->le.u.ipv4.lip = laddr; | |
3918 | req->le.u.ipv4.pip = raddr; | |
3919 | req->tcb.rcv_nxt = htonl(rcv_isn + 1); | |
3920 | req->tcb.rcv_adv = htons(window); | |
3921 | req->tcb.t_state_to_astid = | |
77a80e23 HS |
3922 | htonl(FW_OFLD_CONNECTION_WR_T_STATE_V(TCP_SYN_RECV) | |
3923 | FW_OFLD_CONNECTION_WR_RCV_SCALE_V(cpl->tcpopt.wsf) | | |
3924 | FW_OFLD_CONNECTION_WR_ASTID_V( | |
6c53e938 | 3925 | PASS_OPEN_TID_G(ntohl(cpl->tos_stid)))); |
1cab775c VP |
3926 | |
3927 | /* | |
3928 | * We store the qid in opt2 which will be used by the firmware | |
3929 | * to send us the wr response. | |
3930 | */ | |
d7990b0c | 3931 | req->tcb.opt2 = htonl(RSS_QUEUE_V(rss_qid)); |
1cab775c VP |
3932 | |
3933 | /* | |
3934 | * We initialize the MSS index in TCB to 0xF. | |
3935 | * So that when driver sends cpl_pass_accept_rpl | |
3936 | * TCB picks up the correct value. If this was 0 | |
3937 | * TP will ignore any value > 0 for MSS index. | |
3938 | */ | |
d7990b0c | 3939 | req->tcb.opt0 = cpu_to_be64(MSS_IDX_V(0xF)); |
6198dd8d | 3940 | req->cookie = (uintptr_t)skb; |
1cab775c VP |
3941 | |
3942 | set_wr_txq(req_skb, CPL_PRIORITY_CONTROL, port_id); | |
1ce1d471 SW |
3943 | ret = cxgb4_ofld_send(dev->rdev.lldi.ports[0], req_skb); |
3944 | if (ret < 0) { | |
3945 | pr_err("%s - cxgb4_ofld_send error %d - dropping\n", __func__, | |
3946 | ret); | |
3947 | kfree_skb(skb); | |
3948 | kfree_skb(req_skb); | |
3949 | } | |
1cab775c VP |
3950 | } |
3951 | ||
3952 | /* | |
3953 | * Handler for CPL_RX_PKT message. Need to handle cpl_rx_pkt | |
3954 | * messages when a filter is being used instead of server to | |
3955 | * redirect a syn packet. When packets hit filter they are redirected | |
3956 | * to the offload queue and driver tries to establish the connection | |
3957 | * using firmware work request. | |
3958 | */ | |
3959 | static int rx_pkt(struct c4iw_dev *dev, struct sk_buff *skb) | |
3960 | { | |
3961 | int stid; | |
3962 | unsigned int filter; | |
3963 | struct ethhdr *eh = NULL; | |
3964 | struct vlan_ethhdr *vlan_eh = NULL; | |
3965 | struct iphdr *iph; | |
3966 | struct tcphdr *tcph; | |
3967 | struct rss_header *rss = (void *)skb->data; | |
3968 | struct cpl_rx_pkt *cpl = (void *)skb->data; | |
3969 | struct cpl_pass_accept_req *req = (void *)(rss + 1); | |
3970 | struct l2t_entry *e; | |
3971 | struct dst_entry *dst; | |
f86fac79 | 3972 | struct c4iw_ep *lep = NULL; |
1cab775c VP |
3973 | u16 window; |
3974 | struct port_info *pi; | |
3975 | struct net_device *pdev; | |
f079af7a | 3976 | u16 rss_qid, eth_hdr_len; |
1cab775c VP |
3977 | int step; |
3978 | u32 tx_chan; | |
3979 | struct neighbour *neigh; | |
3980 | ||
3981 | /* Drop all non-SYN packets */ | |
bdc590b9 | 3982 | if (!(cpl->l2info & cpu_to_be32(RXF_SYN_F))) |
1cab775c VP |
3983 | goto reject; |
3984 | ||
3985 | /* | |
3986 | * Drop all packets which did not hit the filter. | |
3987 | * Unlikely to happen. | |
3988 | */ | |
3989 | if (!(rss->filter_hit && rss->filter_tid)) | |
3990 | goto reject; | |
3991 | ||
3992 | /* | |
3993 | * Calculate the server tid from filter hit index from cpl_rx_pkt. | |
3994 | */ | |
a4ea025f | 3995 | stid = (__force int) cpu_to_be32((__force u32) rss->hash_val); |
1cab775c | 3996 | |
f86fac79 | 3997 | lep = (struct c4iw_ep *)get_ep_from_stid(dev, stid); |
1cab775c VP |
3998 | if (!lep) { |
3999 | PDBG("%s connect request on invalid stid %d\n", __func__, stid); | |
4000 | goto reject; | |
4001 | } | |
4002 | ||
963cab50 H |
4003 | switch (CHELSIO_CHIP_VERSION(dev->rdev.lldi.adapter_type)) { |
4004 | case CHELSIO_T4: | |
4005 | eth_hdr_len = RX_ETHHDR_LEN_G(be32_to_cpu(cpl->l2info)); | |
4006 | break; | |
4007 | case CHELSIO_T5: | |
4008 | eth_hdr_len = RX_T5_ETHHDR_LEN_G(be32_to_cpu(cpl->l2info)); | |
4009 | break; | |
4010 | case CHELSIO_T6: | |
4011 | eth_hdr_len = RX_T6_ETHHDR_LEN_G(be32_to_cpu(cpl->l2info)); | |
4012 | break; | |
4013 | default: | |
4014 | pr_err("T%d Chip is not supported\n", | |
4015 | CHELSIO_CHIP_VERSION(dev->rdev.lldi.adapter_type)); | |
4016 | goto reject; | |
4017 | } | |
4018 | ||
f079af7a | 4019 | if (eth_hdr_len == ETH_HLEN) { |
1cab775c VP |
4020 | eh = (struct ethhdr *)(req + 1); |
4021 | iph = (struct iphdr *)(eh + 1); | |
4022 | } else { | |
4023 | vlan_eh = (struct vlan_ethhdr *)(req + 1); | |
4024 | iph = (struct iphdr *)(vlan_eh + 1); | |
4025 | skb->vlan_tci = ntohs(cpl->vlan); | |
4026 | } | |
4027 | ||
4028 | if (iph->version != 0x4) | |
4029 | goto reject; | |
4030 | ||
4031 | tcph = (struct tcphdr *)(iph + 1); | |
4032 | skb_set_network_header(skb, (void *)iph - (void *)rss); | |
4033 | skb_set_transport_header(skb, (void *)tcph - (void *)rss); | |
4034 | skb_get(skb); | |
4035 | ||
4036 | PDBG("%s lip 0x%x lport %u pip 0x%x pport %u tos %d\n", __func__, | |
4037 | ntohl(iph->daddr), ntohs(tcph->dest), ntohl(iph->saddr), | |
4038 | ntohs(tcph->source), iph->tos); | |
4039 | ||
830662f6 VP |
4040 | dst = find_route(dev, iph->daddr, iph->saddr, tcph->dest, tcph->source, |
4041 | iph->tos); | |
4042 | if (!dst) { | |
1cab775c VP |
4043 | pr_err("%s - failed to find dst entry!\n", |
4044 | __func__); | |
4045 | goto reject; | |
4046 | } | |
1cab775c VP |
4047 | neigh = dst_neigh_lookup_skb(dst, skb); |
4048 | ||
aaa0c23c ZZ |
4049 | if (!neigh) { |
4050 | pr_err("%s - failed to allocate neigh!\n", | |
4051 | __func__); | |
4052 | goto free_dst; | |
4053 | } | |
4054 | ||
1cab775c VP |
4055 | if (neigh->dev->flags & IFF_LOOPBACK) { |
4056 | pdev = ip_dev_find(&init_net, iph->daddr); | |
4057 | e = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh, | |
4058 | pdev, 0); | |
4059 | pi = (struct port_info *)netdev_priv(pdev); | |
4060 | tx_chan = cxgb4_port_chan(pdev); | |
4061 | dev_put(pdev); | |
4062 | } else { | |
830662f6 | 4063 | pdev = get_real_dev(neigh->dev); |
1cab775c | 4064 | e = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh, |
830662f6 VP |
4065 | pdev, 0); |
4066 | pi = (struct port_info *)netdev_priv(pdev); | |
4067 | tx_chan = cxgb4_port_chan(pdev); | |
1cab775c | 4068 | } |
ebf00060 | 4069 | neigh_release(neigh); |
1cab775c VP |
4070 | if (!e) { |
4071 | pr_err("%s - failed to allocate l2t entry!\n", | |
4072 | __func__); | |
4073 | goto free_dst; | |
4074 | } | |
4075 | ||
4076 | step = dev->rdev.lldi.nrxq / dev->rdev.lldi.nchan; | |
4077 | rss_qid = dev->rdev.lldi.rxq_ids[pi->port_id * step]; | |
ef5d6355 | 4078 | window = (__force u16) htons((__force u16)tcph->window); |
1cab775c VP |
4079 | |
4080 | /* Calcuate filter portion for LE region. */ | |
41b4f86c KS |
4081 | filter = (__force unsigned int) cpu_to_be32(cxgb4_select_ntuple( |
4082 | dev->rdev.lldi.ports[0], | |
4083 | e)); | |
1cab775c VP |
4084 | |
4085 | /* | |
4086 | * Synthesize the cpl_pass_accept_req. We have everything except the | |
4087 | * TID. Once firmware sends a reply with TID we update the TID field | |
4088 | * in cpl and pass it through the regular cpl_pass_accept_req path. | |
4089 | */ | |
4090 | build_cpl_pass_accept_req(skb, stid, iph->tos); | |
4091 | send_fw_pass_open_req(dev, skb, iph->daddr, tcph->dest, iph->saddr, | |
4092 | tcph->source, ntohl(tcph->seq), filter, window, | |
4093 | rss_qid, pi->port_id); | |
4094 | cxgb4_l2t_release(e); | |
4095 | free_dst: | |
4096 | dst_release(dst); | |
4097 | reject: | |
f86fac79 H |
4098 | if (lep) |
4099 | c4iw_put_ep(&lep->com); | |
2f5b48c3 SW |
4100 | return 0; |
4101 | } | |
4102 | ||
be4c9bad RD |
4103 | /* |
4104 | * These are the real handlers that are called from a | |
4105 | * work queue. | |
4106 | */ | |
9dec900c | 4107 | static c4iw_handler_func work_handlers[NUM_CPL_CMDS + NUM_FAKE_CPLS] = { |
be4c9bad RD |
4108 | [CPL_ACT_ESTABLISH] = act_establish, |
4109 | [CPL_ACT_OPEN_RPL] = act_open_rpl, | |
4110 | [CPL_RX_DATA] = rx_data, | |
4111 | [CPL_ABORT_RPL_RSS] = abort_rpl, | |
4112 | [CPL_ABORT_RPL] = abort_rpl, | |
4113 | [CPL_PASS_OPEN_RPL] = pass_open_rpl, | |
4114 | [CPL_CLOSE_LISTSRV_RPL] = close_listsrv_rpl, | |
4115 | [CPL_PASS_ACCEPT_REQ] = pass_accept_req, | |
4116 | [CPL_PASS_ESTABLISH] = pass_establish, | |
4117 | [CPL_PEER_CLOSE] = peer_close, | |
4118 | [CPL_ABORT_REQ_RSS] = peer_abort, | |
4119 | [CPL_CLOSE_CON_RPL] = close_con_rpl, | |
4120 | [CPL_RDMA_TERMINATE] = terminate, | |
2f5b48c3 | 4121 | [CPL_FW4_ACK] = fw4_ack, |
1cab775c | 4122 | [CPL_FW6_MSG] = deferred_fw6_msg, |
9dec900c | 4123 | [CPL_RX_PKT] = rx_pkt, |
8d1f1a6b H |
4124 | [FAKE_CPL_PUT_EP_SAFE] = _put_ep_safe, |
4125 | [FAKE_CPL_PASS_PUT_EP_SAFE] = _put_pass_ep_safe | |
be4c9bad RD |
4126 | }; |
4127 | ||
4128 | static void process_timeout(struct c4iw_ep *ep) | |
4129 | { | |
4130 | struct c4iw_qp_attributes attrs; | |
4131 | int abort = 1; | |
4132 | ||
2f5b48c3 | 4133 | mutex_lock(&ep->com.mutex); |
be4c9bad RD |
4134 | PDBG("%s ep %p tid %u state %d\n", __func__, ep, ep->hwtid, |
4135 | ep->com.state); | |
793dad94 | 4136 | set_bit(TIMEDOUT, &ep->com.history); |
be4c9bad RD |
4137 | switch (ep->com.state) { |
4138 | case MPA_REQ_SENT: | |
be4c9bad RD |
4139 | connect_reply_upcall(ep, -ETIMEDOUT); |
4140 | break; | |
4141 | case MPA_REQ_WAIT: | |
ceb110a8 | 4142 | case MPA_REQ_RCVD: |
e4b76a2a | 4143 | case MPA_REP_SENT: |
ceb110a8 | 4144 | case FPDU_MODE: |
be4c9bad RD |
4145 | break; |
4146 | case CLOSING: | |
4147 | case MORIBUND: | |
4148 | if (ep->com.cm_id && ep->com.qp) { | |
4149 | attrs.next_state = C4IW_QP_STATE_ERROR; | |
4150 | c4iw_modify_qp(ep->com.qp->rhp, | |
4151 | ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, | |
4152 | &attrs, 1); | |
4153 | } | |
be13b2df | 4154 | close_complete_upcall(ep, -ETIMEDOUT); |
be4c9bad | 4155 | break; |
b33bd0cb SW |
4156 | case ABORTING: |
4157 | case DEAD: | |
4158 | ||
4159 | /* | |
4160 | * These states are expected if the ep timed out at the same | |
4161 | * time as another thread was calling stop_ep_timer(). | |
4162 | * So we silently do nothing for these states. | |
4163 | */ | |
4164 | abort = 0; | |
4165 | break; | |
be4c9bad | 4166 | default: |
76f267b7 | 4167 | WARN(1, "%s unexpected state ep %p tid %u state %u\n", |
be4c9bad | 4168 | __func__, ep, ep->hwtid, ep->com.state); |
be4c9bad RD |
4169 | abort = 0; |
4170 | } | |
cc18b939 | 4171 | mutex_unlock(&ep->com.mutex); |
69736279 H |
4172 | if (abort) |
4173 | c4iw_ep_disconnect(ep, 1, GFP_KERNEL); | |
be4c9bad RD |
4174 | c4iw_put_ep(&ep->com); |
4175 | } | |
4176 | ||
4177 | static void process_timedout_eps(void) | |
4178 | { | |
4179 | struct c4iw_ep *ep; | |
4180 | ||
4181 | spin_lock_irq(&timeout_lock); | |
4182 | while (!list_empty(&timeout_list)) { | |
4183 | struct list_head *tmp; | |
4184 | ||
4185 | tmp = timeout_list.next; | |
4186 | list_del(tmp); | |
b33bd0cb SW |
4187 | tmp->next = NULL; |
4188 | tmp->prev = NULL; | |
be4c9bad RD |
4189 | spin_unlock_irq(&timeout_lock); |
4190 | ep = list_entry(tmp, struct c4iw_ep, entry); | |
4191 | process_timeout(ep); | |
4192 | spin_lock_irq(&timeout_lock); | |
4193 | } | |
4194 | spin_unlock_irq(&timeout_lock); | |
4195 | } | |
4196 | ||
4197 | static void process_work(struct work_struct *work) | |
4198 | { | |
4199 | struct sk_buff *skb = NULL; | |
4200 | struct c4iw_dev *dev; | |
c1d7356c | 4201 | struct cpl_act_establish *rpl; |
be4c9bad RD |
4202 | unsigned int opcode; |
4203 | int ret; | |
4204 | ||
b33bd0cb | 4205 | process_timedout_eps(); |
be4c9bad RD |
4206 | while ((skb = skb_dequeue(&rxq))) { |
4207 | rpl = cplhdr(skb); | |
4208 | dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *))); | |
4209 | opcode = rpl->ot.opcode; | |
4210 | ||
4211 | BUG_ON(!work_handlers[opcode]); | |
4212 | ret = work_handlers[opcode](dev, skb); | |
4213 | if (!ret) | |
4214 | kfree_skb(skb); | |
b33bd0cb | 4215 | process_timedout_eps(); |
be4c9bad | 4216 | } |
be4c9bad RD |
4217 | } |
4218 | ||
4219 | static DECLARE_WORK(skb_work, process_work); | |
4220 | ||
4221 | static void ep_timeout(unsigned long arg) | |
4222 | { | |
4223 | struct c4iw_ep *ep = (struct c4iw_ep *)arg; | |
1ec779cc | 4224 | int kickit = 0; |
be4c9bad RD |
4225 | |
4226 | spin_lock(&timeout_lock); | |
1ec779cc | 4227 | if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) { |
b33bd0cb SW |
4228 | /* |
4229 | * Only insert if it is not already on the list. | |
4230 | */ | |
4231 | if (!ep->entry.next) { | |
4232 | list_add_tail(&ep->entry, &timeout_list); | |
4233 | kickit = 1; | |
4234 | } | |
1ec779cc | 4235 | } |
be4c9bad | 4236 | spin_unlock(&timeout_lock); |
1ec779cc VP |
4237 | if (kickit) |
4238 | queue_work(workq, &skb_work); | |
be4c9bad RD |
4239 | } |
4240 | ||
cfdda9d7 SW |
4241 | /* |
4242 | * All the CM events are handled on a work queue to have a safe context. | |
4243 | */ | |
4244 | static int sched(struct c4iw_dev *dev, struct sk_buff *skb) | |
4245 | { | |
4246 | ||
4247 | /* | |
4248 | * Save dev in the skb->cb area. | |
4249 | */ | |
4250 | *((struct c4iw_dev **) (skb->cb + sizeof(void *))) = dev; | |
4251 | ||
4252 | /* | |
4253 | * Queue the skb and schedule the worker thread. | |
4254 | */ | |
4255 | skb_queue_tail(&rxq, skb); | |
4256 | queue_work(workq, &skb_work); | |
4257 | return 0; | |
4258 | } | |
4259 | ||
4260 | static int set_tcb_rpl(struct c4iw_dev *dev, struct sk_buff *skb) | |
4261 | { | |
4262 | struct cpl_set_tcb_rpl *rpl = cplhdr(skb); | |
4263 | ||
4264 | if (rpl->status != CPL_ERR_NONE) { | |
4265 | printk(KERN_ERR MOD "Unexpected SET_TCB_RPL status %u " | |
4266 | "for tid %u\n", rpl->status, GET_TID(rpl)); | |
4267 | } | |
2f5b48c3 | 4268 | kfree_skb(skb); |
cfdda9d7 SW |
4269 | return 0; |
4270 | } | |
4271 | ||
be4c9bad RD |
4272 | static int fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb) |
4273 | { | |
4274 | struct cpl_fw6_msg *rpl = cplhdr(skb); | |
4275 | struct c4iw_wr_wait *wr_waitp; | |
4276 | int ret; | |
4277 | ||
4278 | PDBG("%s type %u\n", __func__, rpl->type); | |
4279 | ||
4280 | switch (rpl->type) { | |
5be78ee9 | 4281 | case FW6_TYPE_WR_RPL: |
be4c9bad | 4282 | ret = (int)((be64_to_cpu(rpl->data[0]) >> 8) & 0xff); |
c8e081a1 | 4283 | wr_waitp = (struct c4iw_wr_wait *)(__force unsigned long) rpl->data[1]; |
be4c9bad | 4284 | PDBG("%s wr_waitp %p ret %u\n", __func__, wr_waitp, ret); |
d9594d99 SW |
4285 | if (wr_waitp) |
4286 | c4iw_wake_up(wr_waitp, ret ? -ret : 0); | |
2f5b48c3 | 4287 | kfree_skb(skb); |
be4c9bad | 4288 | break; |
5be78ee9 | 4289 | case FW6_TYPE_CQE: |
5be78ee9 | 4290 | case FW6_TYPE_OFLD_CONNECTION_WR_RPL: |
1cab775c | 4291 | sched(dev, skb); |
5be78ee9 | 4292 | break; |
be4c9bad RD |
4293 | default: |
4294 | printk(KERN_ERR MOD "%s unexpected fw6 msg type %u\n", __func__, | |
4295 | rpl->type); | |
2f5b48c3 | 4296 | kfree_skb(skb); |
be4c9bad RD |
4297 | break; |
4298 | } | |
4299 | return 0; | |
4300 | } | |
4301 | ||
8da7e7a5 SW |
4302 | static int peer_abort_intr(struct c4iw_dev *dev, struct sk_buff *skb) |
4303 | { | |
4304 | struct cpl_abort_req_rss *req = cplhdr(skb); | |
4305 | struct c4iw_ep *ep; | |
8da7e7a5 SW |
4306 | unsigned int tid = GET_TID(req); |
4307 | ||
944661dd H |
4308 | ep = get_ep_from_tid(dev, tid); |
4309 | /* This EP will be dereferenced in peer_abort() */ | |
14b92228 SW |
4310 | if (!ep) { |
4311 | printk(KERN_WARNING MOD | |
4312 | "Abort on non-existent endpoint, tid %d\n", tid); | |
4313 | kfree_skb(skb); | |
4314 | return 0; | |
4315 | } | |
7a2cea2a | 4316 | if (is_neg_adv(req->status)) { |
179d03bb H |
4317 | PDBG("%s Negative advice on abort- tid %u status %d (%s)\n", |
4318 | __func__, ep->hwtid, req->status, | |
4319 | neg_adv_str(req->status)); | |
944661dd | 4320 | goto out; |
8da7e7a5 SW |
4321 | } |
4322 | PDBG("%s ep %p tid %u state %u\n", __func__, ep, ep->hwtid, | |
4323 | ep->com.state); | |
4324 | ||
093108cb | 4325 | c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); |
944661dd | 4326 | out: |
8da7e7a5 SW |
4327 | sched(dev, skb); |
4328 | return 0; | |
4329 | } | |
4330 | ||
be4c9bad RD |
4331 | /* |
4332 | * Most upcalls from the T4 Core go to sched() to | |
4333 | * schedule the processing on a work queue. | |
4334 | */ | |
4335 | c4iw_handler_func c4iw_handlers[NUM_CPL_CMDS] = { | |
4336 | [CPL_ACT_ESTABLISH] = sched, | |
4337 | [CPL_ACT_OPEN_RPL] = sched, | |
4338 | [CPL_RX_DATA] = sched, | |
4339 | [CPL_ABORT_RPL_RSS] = sched, | |
4340 | [CPL_ABORT_RPL] = sched, | |
4341 | [CPL_PASS_OPEN_RPL] = sched, | |
4342 | [CPL_CLOSE_LISTSRV_RPL] = sched, | |
4343 | [CPL_PASS_ACCEPT_REQ] = sched, | |
4344 | [CPL_PASS_ESTABLISH] = sched, | |
4345 | [CPL_PEER_CLOSE] = sched, | |
4346 | [CPL_CLOSE_CON_RPL] = sched, | |
8da7e7a5 | 4347 | [CPL_ABORT_REQ_RSS] = peer_abort_intr, |
be4c9bad RD |
4348 | [CPL_RDMA_TERMINATE] = sched, |
4349 | [CPL_FW4_ACK] = sched, | |
4350 | [CPL_SET_TCB_RPL] = set_tcb_rpl, | |
1cab775c VP |
4351 | [CPL_FW6_MSG] = fw6_msg, |
4352 | [CPL_RX_PKT] = sched | |
be4c9bad RD |
4353 | }; |
4354 | ||
cfdda9d7 SW |
4355 | int __init c4iw_cm_init(void) |
4356 | { | |
be4c9bad | 4357 | spin_lock_init(&timeout_lock); |
cfdda9d7 SW |
4358 | skb_queue_head_init(&rxq); |
4359 | ||
4360 | workq = create_singlethread_workqueue("iw_cxgb4"); | |
4361 | if (!workq) | |
4362 | return -ENOMEM; | |
4363 | ||
cfdda9d7 SW |
4364 | return 0; |
4365 | } | |
4366 | ||
46c1376d | 4367 | void c4iw_cm_term(void) |
cfdda9d7 | 4368 | { |
be4c9bad | 4369 | WARN_ON(!list_empty(&timeout_list)); |
cfdda9d7 SW |
4370 | flush_workqueue(workq); |
4371 | destroy_workqueue(workq); | |
4372 | } |