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sh_eth: fix EESIPR values for SH77{34|63}
[linux/fpc-iii.git] / drivers / target / iscsi / cxgbit / cxgbit_cm.c
blob2fb1bf1a26c5e6a0488869cf91d29935a3301af1
1 /*
2 * Copyright (c) 2016 Chelsio Communications, Inc.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8
9 #include <linux/module.h>
10 #include <linux/list.h>
11 #include <linux/workqueue.h>
12 #include <linux/skbuff.h>
13 #include <linux/timer.h>
14 #include <linux/notifier.h>
15 #include <linux/inetdevice.h>
16 #include <linux/ip.h>
17 #include <linux/tcp.h>
18 #include <linux/if_vlan.h>
19
20 #include <net/neighbour.h>
21 #include <net/netevent.h>
22 #include <net/route.h>
23 #include <net/tcp.h>
24 #include <net/ip6_route.h>
25 #include <net/addrconf.h>
26
27 #include <libcxgb_cm.h>
28 #include "cxgbit.h"
29 #include "clip_tbl.h"
30
31 static void cxgbit_init_wr_wait(struct cxgbit_wr_wait *wr_waitp)
32 {
33 wr_waitp->ret = 0;
34 reinit_completion(&wr_waitp->completion);
35 }
36
37 static void
38 cxgbit_wake_up(struct cxgbit_wr_wait *wr_waitp, const char *func, u8 ret)
39 {
40 if (ret == CPL_ERR_NONE)
41 wr_waitp->ret = 0;
42 else
43 wr_waitp->ret = -EIO;
44
45 if (wr_waitp->ret)
46 pr_err("%s: err:%u", func, ret);
47
48 complete(&wr_waitp->completion);
49 }
50
51 static int
52 cxgbit_wait_for_reply(struct cxgbit_device *cdev,
53 struct cxgbit_wr_wait *wr_waitp, u32 tid, u32 timeout,
54 const char *func)
55 {
56 int ret;
57
58 if (!test_bit(CDEV_STATE_UP, &cdev->flags)) {
59 wr_waitp->ret = -EIO;
60 goto out;
61 }
62
63 ret = wait_for_completion_timeout(&wr_waitp->completion, timeout * HZ);
64 if (!ret) {
65 pr_info("%s - Device %s not responding tid %u\n",
66 func, pci_name(cdev->lldi.pdev), tid);
67 wr_waitp->ret = -ETIMEDOUT;
68 }
69 out:
70 if (wr_waitp->ret)
71 pr_info("%s: FW reply %d tid %u\n",
72 pci_name(cdev->lldi.pdev), wr_waitp->ret, tid);
73 return wr_waitp->ret;
74 }
75
76 static int cxgbit_np_hashfn(const struct cxgbit_np *cnp)
77 {
78 return ((unsigned long)cnp >> 10) & (NP_INFO_HASH_SIZE - 1);
79 }
80
81 static struct np_info *
82 cxgbit_np_hash_add(struct cxgbit_device *cdev, struct cxgbit_np *cnp,
83 unsigned int stid)
84 {
85 struct np_info *p = kzalloc(sizeof(*p), GFP_KERNEL);
86
87 if (p) {
88 int bucket = cxgbit_np_hashfn(cnp);
89
90 p->cnp = cnp;
91 p->stid = stid;
92 spin_lock(&cdev->np_lock);
93 p->next = cdev->np_hash_tab[bucket];
94 cdev->np_hash_tab[bucket] = p;
95 spin_unlock(&cdev->np_lock);
96 }
97
98 return p;
99 }
100
101 static int
102 cxgbit_np_hash_find(struct cxgbit_device *cdev, struct cxgbit_np *cnp)
103 {
104 int stid = -1, bucket = cxgbit_np_hashfn(cnp);
105 struct np_info *p;
106
107 spin_lock(&cdev->np_lock);
108 for (p = cdev->np_hash_tab[bucket]; p; p = p->next) {
109 if (p->cnp == cnp) {
110 stid = p->stid;
111 break;
112 }
113 }
114 spin_unlock(&cdev->np_lock);
115
116 return stid;
117 }
118
119 static int cxgbit_np_hash_del(struct cxgbit_device *cdev, struct cxgbit_np *cnp)
120 {
121 int stid = -1, bucket = cxgbit_np_hashfn(cnp);
122 struct np_info *p, **prev = &cdev->np_hash_tab[bucket];
123
124 spin_lock(&cdev->np_lock);
125 for (p = *prev; p; prev = &p->next, p = p->next) {
126 if (p->cnp == cnp) {
127 stid = p->stid;
128 *prev = p->next;
129 kfree(p);
130 break;
131 }
132 }
133 spin_unlock(&cdev->np_lock);
134
135 return stid;
136 }
137
138 void _cxgbit_free_cnp(struct kref *kref)
139 {
140 struct cxgbit_np *cnp;
141
142 cnp = container_of(kref, struct cxgbit_np, kref);
143 kfree(cnp);
144 }
145
146 static int
147 cxgbit_create_server6(struct cxgbit_device *cdev, unsigned int stid,
148 struct cxgbit_np *cnp)
149 {
150 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)
151 &cnp->com.local_addr;
152 int addr_type;
153 int ret;
154
155 pr_debug("%s: dev = %s; stid = %u; sin6_port = %u\n",
156 __func__, cdev->lldi.ports[0]->name, stid, sin6->sin6_port);
157
158 addr_type = ipv6_addr_type((const struct in6_addr *)
159 &sin6->sin6_addr);
160 if (addr_type != IPV6_ADDR_ANY) {
161 ret = cxgb4_clip_get(cdev->lldi.ports[0],
162 (const u32 *)&sin6->sin6_addr.s6_addr, 1);
163 if (ret) {
164 pr_err("Unable to find clip table entry. laddr %pI6. Error:%d.\n",
165 sin6->sin6_addr.s6_addr, ret);
166 return -ENOMEM;
167 }
168 }
169
170 cxgbit_get_cnp(cnp);
171 cxgbit_init_wr_wait(&cnp->com.wr_wait);
172
173 ret = cxgb4_create_server6(cdev->lldi.ports[0],
174 stid, &sin6->sin6_addr,
175 sin6->sin6_port,
176 cdev->lldi.rxq_ids[0]);
177 if (!ret)
178 ret = cxgbit_wait_for_reply(cdev, &cnp->com.wr_wait,
179 0, 10, __func__);
180 else if (ret > 0)
181 ret = net_xmit_errno(ret);
182 else
183 cxgbit_put_cnp(cnp);
184
185 if (ret) {
186 if (ret != -ETIMEDOUT)
187 cxgb4_clip_release(cdev->lldi.ports[0],
188 (const u32 *)&sin6->sin6_addr.s6_addr, 1);
189
190 pr_err("create server6 err %d stid %d laddr %pI6 lport %d\n",
191 ret, stid, sin6->sin6_addr.s6_addr,
192 ntohs(sin6->sin6_port));
193 }
194
195 return ret;
196 }
197
198 static int
199 cxgbit_create_server4(struct cxgbit_device *cdev, unsigned int stid,
200 struct cxgbit_np *cnp)
201 {
202 struct sockaddr_in *sin = (struct sockaddr_in *)
203 &cnp->com.local_addr;
204 int ret;
205
206 pr_debug("%s: dev = %s; stid = %u; sin_port = %u\n",
207 __func__, cdev->lldi.ports[0]->name, stid, sin->sin_port);
208
209 cxgbit_get_cnp(cnp);
210 cxgbit_init_wr_wait(&cnp->com.wr_wait);
211
212 ret = cxgb4_create_server(cdev->lldi.ports[0],
213 stid, sin->sin_addr.s_addr,
214 sin->sin_port, 0,
215 cdev->lldi.rxq_ids[0]);
216 if (!ret)
217 ret = cxgbit_wait_for_reply(cdev,
218 &cnp->com.wr_wait,
219 0, 10, __func__);
220 else if (ret > 0)
221 ret = net_xmit_errno(ret);
222 else
223 cxgbit_put_cnp(cnp);
224
225 if (ret)
226 pr_err("create server failed err %d stid %d laddr %pI4 lport %d\n",
227 ret, stid, &sin->sin_addr, ntohs(sin->sin_port));
228 return ret;
229 }
230
231 struct cxgbit_device *cxgbit_find_device(struct net_device *ndev, u8 *port_id)
232 {
233 struct cxgbit_device *cdev;
234 u8 i;
235
236 list_for_each_entry(cdev, &cdev_list_head, list) {
237 struct cxgb4_lld_info *lldi = &cdev->lldi;
238
239 for (i = 0; i < lldi->nports; i++) {
240 if (lldi->ports[i] == ndev) {
241 if (port_id)
242 *port_id = i;
243 return cdev;
244 }
245 }
246 }
247
248 return NULL;
249 }
250
251 static struct net_device *cxgbit_get_real_dev(struct net_device *ndev)
252 {
253 if (ndev->priv_flags & IFF_BONDING) {
254 pr_err("Bond devices are not supported. Interface:%s\n",
255 ndev->name);
256 return NULL;
257 }
258
259 if (is_vlan_dev(ndev))
260 return vlan_dev_real_dev(ndev);
261
262 return ndev;
263 }
264
265 static struct net_device *cxgbit_ipv4_netdev(__be32 saddr)
266 {
267 struct net_device *ndev;
268
269 ndev = __ip_dev_find(&init_net, saddr, false);
270 if (!ndev)
271 return NULL;
272
273 return cxgbit_get_real_dev(ndev);
274 }
275
276 static struct net_device *cxgbit_ipv6_netdev(struct in6_addr *addr6)
277 {
278 struct net_device *ndev = NULL;
279 bool found = false;
280
281 if (IS_ENABLED(CONFIG_IPV6)) {
282 for_each_netdev_rcu(&init_net, ndev)
283 if (ipv6_chk_addr(&init_net, addr6, ndev, 1)) {
284 found = true;
285 break;
286 }
287 }
288 if (!found)
289 return NULL;
290 return cxgbit_get_real_dev(ndev);
291 }
292
293 static struct cxgbit_device *cxgbit_find_np_cdev(struct cxgbit_np *cnp)
294 {
295 struct sockaddr_storage *sockaddr = &cnp->com.local_addr;
296 int ss_family = sockaddr->ss_family;
297 struct net_device *ndev = NULL;
298 struct cxgbit_device *cdev = NULL;
299
300 rcu_read_lock();
301 if (ss_family == AF_INET) {
302 struct sockaddr_in *sin;
303
304 sin = (struct sockaddr_in *)sockaddr;
305 ndev = cxgbit_ipv4_netdev(sin->sin_addr.s_addr);
306 } else if (ss_family == AF_INET6) {
307 struct sockaddr_in6 *sin6;
308
309 sin6 = (struct sockaddr_in6 *)sockaddr;
310 ndev = cxgbit_ipv6_netdev(&sin6->sin6_addr);
311 }
312 if (!ndev)
313 goto out;
314
315 cdev = cxgbit_find_device(ndev, NULL);
316 out:
317 rcu_read_unlock();
318 return cdev;
319 }
320
321 static bool cxgbit_inaddr_any(struct cxgbit_np *cnp)
322 {
323 struct sockaddr_storage *sockaddr = &cnp->com.local_addr;
324 int ss_family = sockaddr->ss_family;
325 int addr_type;
326
327 if (ss_family == AF_INET) {
328 struct sockaddr_in *sin;
329
330 sin = (struct sockaddr_in *)sockaddr;
331 if (sin->sin_addr.s_addr == htonl(INADDR_ANY))
332 return true;
333 } else if (ss_family == AF_INET6) {
334 struct sockaddr_in6 *sin6;
335
336 sin6 = (struct sockaddr_in6 *)sockaddr;
337 addr_type = ipv6_addr_type((const struct in6_addr *)
338 &sin6->sin6_addr);
339 if (addr_type == IPV6_ADDR_ANY)
340 return true;
341 }
342 return false;
343 }
344
345 static int
346 __cxgbit_setup_cdev_np(struct cxgbit_device *cdev, struct cxgbit_np *cnp)
347 {
348 int stid, ret;
349 int ss_family = cnp->com.local_addr.ss_family;
350
351 if (!test_bit(CDEV_STATE_UP, &cdev->flags))
352 return -EINVAL;
353
354 stid = cxgb4_alloc_stid(cdev->lldi.tids, ss_family, cnp);
355 if (stid < 0)
356 return -EINVAL;
357
358 if (!cxgbit_np_hash_add(cdev, cnp, stid)) {
359 cxgb4_free_stid(cdev->lldi.tids, stid, ss_family);
360 return -EINVAL;
361 }
362
363 if (ss_family == AF_INET)
364 ret = cxgbit_create_server4(cdev, stid, cnp);
365 else
366 ret = cxgbit_create_server6(cdev, stid, cnp);
367
368 if (ret) {
369 if (ret != -ETIMEDOUT)
370 cxgb4_free_stid(cdev->lldi.tids, stid,
371 ss_family);
372 cxgbit_np_hash_del(cdev, cnp);
373 return ret;
374 }
375 return ret;
376 }
377
378 static int cxgbit_setup_cdev_np(struct cxgbit_np *cnp)
379 {
380 struct cxgbit_device *cdev;
381 int ret = -1;
382
383 mutex_lock(&cdev_list_lock);
384 cdev = cxgbit_find_np_cdev(cnp);
385 if (!cdev)
386 goto out;
387
388 if (cxgbit_np_hash_find(cdev, cnp) >= 0)
389 goto out;
390
391 if (__cxgbit_setup_cdev_np(cdev, cnp))
392 goto out;
393
394 cnp->com.cdev = cdev;
395 ret = 0;
396 out:
397 mutex_unlock(&cdev_list_lock);
398 return ret;
399 }
400
401 static int cxgbit_setup_all_np(struct cxgbit_np *cnp)
402 {
403 struct cxgbit_device *cdev;
404 int ret;
405 u32 count = 0;
406
407 mutex_lock(&cdev_list_lock);
408 list_for_each_entry(cdev, &cdev_list_head, list) {
409 if (cxgbit_np_hash_find(cdev, cnp) >= 0) {
410 mutex_unlock(&cdev_list_lock);
411 return -1;
412 }
413 }
414
415 list_for_each_entry(cdev, &cdev_list_head, list) {
416 ret = __cxgbit_setup_cdev_np(cdev, cnp);
417 if (ret == -ETIMEDOUT)
418 break;
419 if (ret != 0)
420 continue;
421 count++;
422 }
423 mutex_unlock(&cdev_list_lock);
424
425 return count ? 0 : -1;
426 }
427
428 int cxgbit_setup_np(struct iscsi_np *np, struct sockaddr_storage *ksockaddr)
429 {
430 struct cxgbit_np *cnp;
431 int ret;
432
433 if ((ksockaddr->ss_family != AF_INET) &&
434 (ksockaddr->ss_family != AF_INET6))
435 return -EINVAL;
436
437 cnp = kzalloc(sizeof(*cnp), GFP_KERNEL);
438 if (!cnp)
439 return -ENOMEM;
440
441 init_waitqueue_head(&cnp->accept_wait);
442 init_completion(&cnp->com.wr_wait.completion);
443 init_completion(&cnp->accept_comp);
444 INIT_LIST_HEAD(&cnp->np_accept_list);
445 spin_lock_init(&cnp->np_accept_lock);
446 kref_init(&cnp->kref);
447 memcpy(&np->np_sockaddr, ksockaddr,
448 sizeof(struct sockaddr_storage));
449 memcpy(&cnp->com.local_addr, &np->np_sockaddr,
450 sizeof(cnp->com.local_addr));
451
452 cnp->np = np;
453 cnp->com.cdev = NULL;
454
455 if (cxgbit_inaddr_any(cnp))
456 ret = cxgbit_setup_all_np(cnp);
457 else
458 ret = cxgbit_setup_cdev_np(cnp);
459
460 if (ret) {
461 cxgbit_put_cnp(cnp);
462 return -EINVAL;
463 }
464
465 np->np_context = cnp;
466 cnp->com.state = CSK_STATE_LISTEN;
467 return 0;
468 }
469
470 static void
471 cxgbit_set_conn_info(struct iscsi_np *np, struct iscsi_conn *conn,
472 struct cxgbit_sock *csk)
473 {
474 conn->login_family = np->np_sockaddr.ss_family;
475 conn->login_sockaddr = csk->com.remote_addr;
476 conn->local_sockaddr = csk->com.local_addr;
477 }
478
479 int cxgbit_accept_np(struct iscsi_np *np, struct iscsi_conn *conn)
480 {
481 struct cxgbit_np *cnp = np->np_context;
482 struct cxgbit_sock *csk;
483 int ret = 0;
484
485 accept_wait:
486 ret = wait_for_completion_interruptible(&cnp->accept_comp);
487 if (ret)
488 return -ENODEV;
489
490 spin_lock_bh(&np->np_thread_lock);
491 if (np->np_thread_state >= ISCSI_NP_THREAD_RESET) {
492 spin_unlock_bh(&np->np_thread_lock);
493 /**
494 * No point in stalling here when np_thread
495 * is in state RESET/SHUTDOWN/EXIT - bail
496 **/
497 return -ENODEV;
498 }
499 spin_unlock_bh(&np->np_thread_lock);
500
501 spin_lock_bh(&cnp->np_accept_lock);
502 if (list_empty(&cnp->np_accept_list)) {
503 spin_unlock_bh(&cnp->np_accept_lock);
504 goto accept_wait;
505 }
506
507 csk = list_first_entry(&cnp->np_accept_list,
508 struct cxgbit_sock,
509 accept_node);
510
511 list_del_init(&csk->accept_node);
512 spin_unlock_bh(&cnp->np_accept_lock);
513 conn->context = csk;
514 csk->conn = conn;
515
516 cxgbit_set_conn_info(np, conn, csk);
517 return 0;
518 }
519
520 static int
521 __cxgbit_free_cdev_np(struct cxgbit_device *cdev, struct cxgbit_np *cnp)
522 {
523 int stid, ret;
524 bool ipv6 = false;
525
526 stid = cxgbit_np_hash_del(cdev, cnp);
527 if (stid < 0)
528 return -EINVAL;
529 if (!test_bit(CDEV_STATE_UP, &cdev->flags))
530 return -EINVAL;
531
532 if (cnp->np->np_sockaddr.ss_family == AF_INET6)
533 ipv6 = true;
534
535 cxgbit_get_cnp(cnp);
536 cxgbit_init_wr_wait(&cnp->com.wr_wait);
537 ret = cxgb4_remove_server(cdev->lldi.ports[0], stid,
538 cdev->lldi.rxq_ids[0], ipv6);
539
540 if (ret > 0)
541 ret = net_xmit_errno(ret);
542
543 if (ret) {
544 cxgbit_put_cnp(cnp);
545 return ret;
546 }
547
548 ret = cxgbit_wait_for_reply(cdev, &cnp->com.wr_wait,
549 0, 10, __func__);
550 if (ret == -ETIMEDOUT)
551 return ret;
552
553 if (ipv6 && cnp->com.cdev) {
554 struct sockaddr_in6 *sin6;
555
556 sin6 = (struct sockaddr_in6 *)&cnp->com.local_addr;
557 cxgb4_clip_release(cdev->lldi.ports[0],
558 (const u32 *)&sin6->sin6_addr.s6_addr,
559 1);
560 }
561
562 cxgb4_free_stid(cdev->lldi.tids, stid,
563 cnp->com.local_addr.ss_family);
564 return 0;
565 }
566
567 static void cxgbit_free_all_np(struct cxgbit_np *cnp)
568 {
569 struct cxgbit_device *cdev;
570 int ret;
571
572 mutex_lock(&cdev_list_lock);
573 list_for_each_entry(cdev, &cdev_list_head, list) {
574 ret = __cxgbit_free_cdev_np(cdev, cnp);
575 if (ret == -ETIMEDOUT)
576 break;
577 }
578 mutex_unlock(&cdev_list_lock);
579 }
580
581 static void cxgbit_free_cdev_np(struct cxgbit_np *cnp)
582 {
583 struct cxgbit_device *cdev;
584 bool found = false;
585
586 mutex_lock(&cdev_list_lock);
587 list_for_each_entry(cdev, &cdev_list_head, list) {
588 if (cdev == cnp->com.cdev) {
589 found = true;
590 break;
591 }
592 }
593 if (!found)
594 goto out;
595
596 __cxgbit_free_cdev_np(cdev, cnp);
597 out:
598 mutex_unlock(&cdev_list_lock);
599 }
600
601 void cxgbit_free_np(struct iscsi_np *np)
602 {
603 struct cxgbit_np *cnp = np->np_context;
604
605 cnp->com.state = CSK_STATE_DEAD;
606 if (cnp->com.cdev)
607 cxgbit_free_cdev_np(cnp);
608 else
609 cxgbit_free_all_np(cnp);
610
611 np->np_context = NULL;
612 cxgbit_put_cnp(cnp);
613 }
614
615 static void cxgbit_send_halfclose(struct cxgbit_sock *csk)
616 {
617 struct sk_buff *skb;
618 u32 len = roundup(sizeof(struct cpl_close_con_req), 16);
619
620 skb = alloc_skb(len, GFP_ATOMIC);
621 if (!skb)
622 return;
623
624 cxgb_mk_close_con_req(skb, len, csk->tid, csk->txq_idx,
625 NULL, NULL);
626
627 cxgbit_skcb_flags(skb) |= SKCBF_TX_FLAG_COMPL;
628 __skb_queue_tail(&csk->txq, skb);
629 cxgbit_push_tx_frames(csk);
630 }
631
632 static void cxgbit_arp_failure_discard(void *handle, struct sk_buff *skb)
633 {
634 pr_debug("%s cxgbit_device %p\n", __func__, handle);
635 kfree_skb(skb);
636 }
637
638 static void cxgbit_abort_arp_failure(void *handle, struct sk_buff *skb)
639 {
640 struct cxgbit_device *cdev = handle;
641 struct cpl_abort_req *req = cplhdr(skb);
642
643 pr_debug("%s cdev %p\n", __func__, cdev);
644 req->cmd = CPL_ABORT_NO_RST;
645 cxgbit_ofld_send(cdev, skb);
646 }
647
648 static int cxgbit_send_abort_req(struct cxgbit_sock *csk)
649 {
650 struct sk_buff *skb;
651 u32 len = roundup(sizeof(struct cpl_abort_req), 16);
652
653 pr_debug("%s: csk %p tid %u; state %d\n",
654 __func__, csk, csk->tid, csk->com.state);
655
656 __skb_queue_purge(&csk->txq);
657
658 if (!test_and_set_bit(CSK_TX_DATA_SENT, &csk->com.flags))
659 cxgbit_send_tx_flowc_wr(csk);
660
661 skb = __skb_dequeue(&csk->skbq);
662 cxgb_mk_abort_req(skb, len, csk->tid, csk->txq_idx,
663 csk->com.cdev, cxgbit_abort_arp_failure);
664
665 return cxgbit_l2t_send(csk->com.cdev, skb, csk->l2t);
666 }
667
668 void cxgbit_free_conn(struct iscsi_conn *conn)
669 {
670 struct cxgbit_sock *csk = conn->context;
671 bool release = false;
672
673 pr_debug("%s: state %d\n",
674 __func__, csk->com.state);
675
676 spin_lock_bh(&csk->lock);
677 switch (csk->com.state) {
678 case CSK_STATE_ESTABLISHED:
679 if (conn->conn_state == TARG_CONN_STATE_IN_LOGOUT) {
680 csk->com.state = CSK_STATE_CLOSING;
681 cxgbit_send_halfclose(csk);
682 } else {
683 csk->com.state = CSK_STATE_ABORTING;
684 cxgbit_send_abort_req(csk);
685 }
686 break;
687 case CSK_STATE_CLOSING:
688 csk->com.state = CSK_STATE_MORIBUND;
689 cxgbit_send_halfclose(csk);
690 break;
691 case CSK_STATE_DEAD:
692 release = true;
693 break;
694 default:
695 pr_err("%s: csk %p; state %d\n",
696 __func__, csk, csk->com.state);
697 }
698 spin_unlock_bh(&csk->lock);
699
700 if (release)
701 cxgbit_put_csk(csk);
702 }
703
704 static void cxgbit_set_emss(struct cxgbit_sock *csk, u16 opt)
705 {
706 csk->emss = csk->com.cdev->lldi.mtus[TCPOPT_MSS_G(opt)] -
707 ((csk->com.remote_addr.ss_family == AF_INET) ?
708 sizeof(struct iphdr) : sizeof(struct ipv6hdr)) -
709 sizeof(struct tcphdr);
710 csk->mss = csk->emss;
711 if (TCPOPT_TSTAMP_G(opt))
712 csk->emss -= round_up(TCPOLEN_TIMESTAMP, 4);
713 if (csk->emss < 128)
714 csk->emss = 128;
715 if (csk->emss & 7)
716 pr_info("Warning: misaligned mtu idx %u mss %u emss=%u\n",
717 TCPOPT_MSS_G(opt), csk->mss, csk->emss);
718 pr_debug("%s mss_idx %u mss %u emss=%u\n", __func__, TCPOPT_MSS_G(opt),
719 csk->mss, csk->emss);
720 }
721
722 static void cxgbit_free_skb(struct cxgbit_sock *csk)
723 {
724 struct sk_buff *skb;
725
726 __skb_queue_purge(&csk->txq);
727 __skb_queue_purge(&csk->rxq);
728 __skb_queue_purge(&csk->backlogq);
729 __skb_queue_purge(&csk->ppodq);
730 __skb_queue_purge(&csk->skbq);
731
732 while ((skb = cxgbit_sock_dequeue_wr(csk)))
733 kfree_skb(skb);
734
735 __kfree_skb(csk->lro_hskb);
736 }
737
738 void _cxgbit_free_csk(struct kref *kref)
739 {
740 struct cxgbit_sock *csk;
741 struct cxgbit_device *cdev;
742
743 csk = container_of(kref, struct cxgbit_sock, kref);
744
745 pr_debug("%s csk %p state %d\n", __func__, csk, csk->com.state);
746
747 if (csk->com.local_addr.ss_family == AF_INET6) {
748 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)
749 &csk->com.local_addr;
750 cxgb4_clip_release(csk->com.cdev->lldi.ports[0],
751 (const u32 *)
752 &sin6->sin6_addr.s6_addr, 1);
753 }
754
755 cxgb4_remove_tid(csk->com.cdev->lldi.tids, 0, csk->tid);
756 dst_release(csk->dst);
757 cxgb4_l2t_release(csk->l2t);
758
759 cdev = csk->com.cdev;
760 spin_lock_bh(&cdev->cskq.lock);
761 list_del(&csk->list);
762 spin_unlock_bh(&cdev->cskq.lock);
763
764 cxgbit_free_skb(csk);
765 cxgbit_put_cdev(cdev);
766
767 kfree(csk);
768 }
769
770 static void cxgbit_set_tcp_window(struct cxgbit_sock *csk, struct port_info *pi)
771 {
772 unsigned int linkspeed;
773 u8 scale;
774
775 linkspeed = pi->link_cfg.speed;
776 scale = linkspeed / SPEED_10000;
777
778 #define CXGBIT_10G_RCV_WIN (256 * 1024)
779 csk->rcv_win = CXGBIT_10G_RCV_WIN;
780 if (scale)
781 csk->rcv_win *= scale;
782
783 #define CXGBIT_10G_SND_WIN (256 * 1024)
784 csk->snd_win = CXGBIT_10G_SND_WIN;
785 if (scale)
786 csk->snd_win *= scale;
787
788 pr_debug("%s snd_win %d rcv_win %d\n",
789 __func__, csk->snd_win, csk->rcv_win);
790 }
791
792 #ifdef CONFIG_CHELSIO_T4_DCB
793 static u8 cxgbit_get_iscsi_dcb_state(struct net_device *ndev)
794 {
795 return ndev->dcbnl_ops->getstate(ndev);
796 }
797
798 static int cxgbit_select_priority(int pri_mask)
799 {
800 if (!pri_mask)
801 return 0;
802
803 return (ffs(pri_mask) - 1);
804 }
805
806 static u8 cxgbit_get_iscsi_dcb_priority(struct net_device *ndev, u16 local_port)
807 {
808 int ret;
809 u8 caps;
810
811 struct dcb_app iscsi_dcb_app = {
812 .protocol = local_port
813 };
814
815 ret = (int)ndev->dcbnl_ops->getcap(ndev, DCB_CAP_ATTR_DCBX, &caps);
816
817 if (ret)
818 return 0;
819
820 if (caps & DCB_CAP_DCBX_VER_IEEE) {
821 iscsi_dcb_app.selector = IEEE_8021QAZ_APP_SEL_ANY;
822
823 ret = dcb_ieee_getapp_mask(ndev, &iscsi_dcb_app);
824
825 } else if (caps & DCB_CAP_DCBX_VER_CEE) {
826 iscsi_dcb_app.selector = DCB_APP_IDTYPE_PORTNUM;
827
828 ret = dcb_getapp(ndev, &iscsi_dcb_app);
829 }
830
831 pr_info("iSCSI priority is set to %u\n", cxgbit_select_priority(ret));
832
833 return cxgbit_select_priority(ret);
834 }
835 #endif
836
837 static int
838 cxgbit_offload_init(struct cxgbit_sock *csk, int iptype, __u8 *peer_ip,
839 u16 local_port, struct dst_entry *dst,
840 struct cxgbit_device *cdev)
841 {
842 struct neighbour *n;
843 int ret, step;
844 struct net_device *ndev;
845 u16 rxq_idx, port_id;
846 #ifdef CONFIG_CHELSIO_T4_DCB
847 u8 priority = 0;
848 #endif
849
850 n = dst_neigh_lookup(dst, peer_ip);
851 if (!n)
852 return -ENODEV;
853
854 rcu_read_lock();
855 ret = -ENOMEM;
856 if (n->dev->flags & IFF_LOOPBACK) {
857 if (iptype == 4)
858 ndev = cxgbit_ipv4_netdev(*(__be32 *)peer_ip);
859 else if (IS_ENABLED(CONFIG_IPV6))
860 ndev = cxgbit_ipv6_netdev((struct in6_addr *)peer_ip);
861 else
862 ndev = NULL;
863
864 if (!ndev) {
865 ret = -ENODEV;
866 goto out;
867 }
868
869 csk->l2t = cxgb4_l2t_get(cdev->lldi.l2t,
870 n, ndev, 0);
871 if (!csk->l2t)
872 goto out;
873 csk->mtu = ndev->mtu;
874 csk->tx_chan = cxgb4_port_chan(ndev);
875 csk->smac_idx = (cxgb4_port_viid(ndev) & 0x7F) << 1;
876 step = cdev->lldi.ntxq /
877 cdev->lldi.nchan;
878 csk->txq_idx = cxgb4_port_idx(ndev) * step;
879 step = cdev->lldi.nrxq /
880 cdev->lldi.nchan;
881 csk->ctrlq_idx = cxgb4_port_idx(ndev);
882 csk->rss_qid = cdev->lldi.rxq_ids[
883 cxgb4_port_idx(ndev) * step];
884 csk->port_id = cxgb4_port_idx(ndev);
885 cxgbit_set_tcp_window(csk,
886 (struct port_info *)netdev_priv(ndev));
887 } else {
888 ndev = cxgbit_get_real_dev(n->dev);
889 if (!ndev) {
890 ret = -ENODEV;
891 goto out;
892 }
893
894 #ifdef CONFIG_CHELSIO_T4_DCB
895 if (cxgbit_get_iscsi_dcb_state(ndev))
896 priority = cxgbit_get_iscsi_dcb_priority(ndev,
897 local_port);
898
899 csk->dcb_priority = priority;
900
901 csk->l2t = cxgb4_l2t_get(cdev->lldi.l2t, n, ndev, priority);
902 #else
903 csk->l2t = cxgb4_l2t_get(cdev->lldi.l2t, n, ndev, 0);
904 #endif
905 if (!csk->l2t)
906 goto out;
907 port_id = cxgb4_port_idx(ndev);
908 csk->mtu = dst_mtu(dst);
909 csk->tx_chan = cxgb4_port_chan(ndev);
910 csk->smac_idx = (cxgb4_port_viid(ndev) & 0x7F) << 1;
911 step = cdev->lldi.ntxq /
912 cdev->lldi.nports;
913 csk->txq_idx = (port_id * step) +
914 (cdev->selectq[port_id][0]++ % step);
915 csk->ctrlq_idx = cxgb4_port_idx(ndev);
916 step = cdev->lldi.nrxq /
917 cdev->lldi.nports;
918 rxq_idx = (port_id * step) +
919 (cdev->selectq[port_id][1]++ % step);
920 csk->rss_qid = cdev->lldi.rxq_ids[rxq_idx];
921 csk->port_id = port_id;
922 cxgbit_set_tcp_window(csk,
923 (struct port_info *)netdev_priv(ndev));
924 }
925 ret = 0;
926 out:
927 rcu_read_unlock();
928 neigh_release(n);
929 return ret;
930 }
931
932 int cxgbit_ofld_send(struct cxgbit_device *cdev, struct sk_buff *skb)
933 {
934 int ret = 0;
935
936 if (!test_bit(CDEV_STATE_UP, &cdev->flags)) {
937 kfree_skb(skb);
938 pr_err("%s - device not up - dropping\n", __func__);
939 return -EIO;
940 }
941
942 ret = cxgb4_ofld_send(cdev->lldi.ports[0], skb);
943 if (ret < 0)
944 kfree_skb(skb);
945 return ret < 0 ? ret : 0;
946 }
947
948 static void cxgbit_release_tid(struct cxgbit_device *cdev, u32 tid)
949 {
950 u32 len = roundup(sizeof(struct cpl_tid_release), 16);
951 struct sk_buff *skb;
952
953 skb = alloc_skb(len, GFP_ATOMIC);
954 if (!skb)
955 return;
956
957 cxgb_mk_tid_release(skb, len, tid, 0);
958 cxgbit_ofld_send(cdev, skb);
959 }
960
961 int
962 cxgbit_l2t_send(struct cxgbit_device *cdev, struct sk_buff *skb,
963 struct l2t_entry *l2e)
964 {
965 int ret = 0;
966
967 if (!test_bit(CDEV_STATE_UP, &cdev->flags)) {
968 kfree_skb(skb);
969 pr_err("%s - device not up - dropping\n", __func__);
970 return -EIO;
971 }
972
973 ret = cxgb4_l2t_send(cdev->lldi.ports[0], skb, l2e);
974 if (ret < 0)
975 kfree_skb(skb);
976 return ret < 0 ? ret : 0;
977 }
978
979 static void cxgbit_send_rx_credits(struct cxgbit_sock *csk, struct sk_buff *skb)
980 {
981 if (csk->com.state != CSK_STATE_ESTABLISHED) {
982 __kfree_skb(skb);
983 return;
984 }
985
986 cxgbit_ofld_send(csk->com.cdev, skb);
987 }
988
989 /*
990 * CPL connection rx data ack: host ->
991 * Send RX credits through an RX_DATA_ACK CPL message.
992 * Returns the number of credits sent.
993 */
994 int cxgbit_rx_data_ack(struct cxgbit_sock *csk)
995 {
996 struct sk_buff *skb;
997 u32 len = roundup(sizeof(struct cpl_rx_data_ack), 16);
998 u32 credit_dack;
999
1000 skb = alloc_skb(len, GFP_KERNEL);
1001 if (!skb)
1002 return -1;
1003
1004 credit_dack = RX_DACK_CHANGE_F | RX_DACK_MODE_V(1) |
1005 RX_CREDITS_V(csk->rx_credits);
1006
1007 cxgb_mk_rx_data_ack(skb, len, csk->tid, csk->ctrlq_idx,
1008 credit_dack);
1009
1010 csk->rx_credits = 0;
1011
1012 spin_lock_bh(&csk->lock);
1013 if (csk->lock_owner) {
1014 cxgbit_skcb_rx_backlog_fn(skb) = cxgbit_send_rx_credits;
1015 __skb_queue_tail(&csk->backlogq, skb);
1016 spin_unlock_bh(&csk->lock);
1017 return 0;
1018 }
1019
1020 cxgbit_send_rx_credits(csk, skb);
1021 spin_unlock_bh(&csk->lock);
1022
1023 return 0;
1024 }
1025
1026 #define FLOWC_WR_NPARAMS_MIN 9
1027 #define FLOWC_WR_NPARAMS_MAX 11
1028 static int cxgbit_alloc_csk_skb(struct cxgbit_sock *csk)
1029 {
1030 struct sk_buff *skb;
1031 u32 len, flowclen;
1032 u8 i;
1033
1034 flowclen = offsetof(struct fw_flowc_wr,
1035 mnemval[FLOWC_WR_NPARAMS_MAX]);
1036
1037 len = max_t(u32, sizeof(struct cpl_abort_req),
1038 sizeof(struct cpl_abort_rpl));
1039
1040 len = max(len, flowclen);
1041 len = roundup(len, 16);
1042
1043 for (i = 0; i < 3; i++) {
1044 skb = alloc_skb(len, GFP_ATOMIC);
1045 if (!skb)
1046 goto out;
1047 __skb_queue_tail(&csk->skbq, skb);
1048 }
1049
1050 skb = alloc_skb(LRO_SKB_MIN_HEADROOM, GFP_ATOMIC);
1051 if (!skb)
1052 goto out;
1053
1054 memset(skb->data, 0, LRO_SKB_MIN_HEADROOM);
1055 csk->lro_hskb = skb;
1056
1057 return 0;
1058 out:
1059 __skb_queue_purge(&csk->skbq);
1060 return -ENOMEM;
1061 }
1062
1063 static void
1064 cxgbit_pass_accept_rpl(struct cxgbit_sock *csk, struct cpl_pass_accept_req *req)
1065 {
1066 struct sk_buff *skb;
1067 const struct tcphdr *tcph;
1068 struct cpl_t5_pass_accept_rpl *rpl5;
1069 unsigned int len = roundup(sizeof(*rpl5), 16);
1070 unsigned int mtu_idx;
1071 u64 opt0;
1072 u32 opt2, hlen;
1073 u32 wscale;
1074 u32 win;
1075
1076 pr_debug("%s csk %p tid %u\n", __func__, csk, csk->tid);
1077
1078 skb = alloc_skb(len, GFP_ATOMIC);
1079 if (!skb) {
1080 cxgbit_put_csk(csk);
1081 return;
1082 }
1083
1084 rpl5 = (struct cpl_t5_pass_accept_rpl *)__skb_put(skb, len);
1085 memset(rpl5, 0, len);
1086
1087 INIT_TP_WR(rpl5, csk->tid);
1088 OPCODE_TID(rpl5) = cpu_to_be32(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL,
1089 csk->tid));
1090 cxgb_best_mtu(csk->com.cdev->lldi.mtus, csk->mtu, &mtu_idx,
1091 req->tcpopt.tstamp,
1092 (csk->com.remote_addr.ss_family == AF_INET) ? 0 : 1);
1093 wscale = cxgb_compute_wscale(csk->rcv_win);
1094 /*
1095 * Specify the largest window that will fit in opt0. The
1096 * remainder will be specified in the rx_data_ack.
1097 */
1098 win = csk->rcv_win >> 10;
1099 if (win > RCV_BUFSIZ_M)
1100 win = RCV_BUFSIZ_M;
1101 opt0 = TCAM_BYPASS_F |
1102 WND_SCALE_V(wscale) |
1103 MSS_IDX_V(mtu_idx) |
1104 L2T_IDX_V(csk->l2t->idx) |
1105 TX_CHAN_V(csk->tx_chan) |
1106 SMAC_SEL_V(csk->smac_idx) |
1107 DSCP_V(csk->tos >> 2) |
1108 ULP_MODE_V(ULP_MODE_ISCSI) |
1109 RCV_BUFSIZ_V(win);
1110
1111 opt2 = RX_CHANNEL_V(0) |
1112 RSS_QUEUE_VALID_F | RSS_QUEUE_V(csk->rss_qid);
1113
1114 if (req->tcpopt.tstamp)
1115 opt2 |= TSTAMPS_EN_F;
1116 if (req->tcpopt.sack)
1117 opt2 |= SACK_EN_F;
1118 if (wscale)
1119 opt2 |= WND_SCALE_EN_F;
1120
1121 hlen = ntohl(req->hdr_len);
1122 tcph = (const void *)(req + 1) + ETH_HDR_LEN_G(hlen) +
1123 IP_HDR_LEN_G(hlen);
1124
1125 if (tcph->ece && tcph->cwr)
1126 opt2 |= CCTRL_ECN_V(1);
1127
1128 opt2 |= RX_COALESCE_V(3);
1129 opt2 |= CONG_CNTRL_V(CONG_ALG_NEWRENO);
1130
1131 opt2 |= T5_ISS_F;
1132 rpl5->iss = cpu_to_be32((prandom_u32() & ~7UL) - 1);
1133
1134 opt2 |= T5_OPT_2_VALID_F;
1135
1136 rpl5->opt0 = cpu_to_be64(opt0);
1137 rpl5->opt2 = cpu_to_be32(opt2);
1138 set_wr_txq(skb, CPL_PRIORITY_SETUP, csk->ctrlq_idx);
1139 t4_set_arp_err_handler(skb, NULL, cxgbit_arp_failure_discard);
1140 cxgbit_l2t_send(csk->com.cdev, skb, csk->l2t);
1141 }
1142
1143 static void
1144 cxgbit_pass_accept_req(struct cxgbit_device *cdev, struct sk_buff *skb)
1145 {
1146 struct cxgbit_sock *csk = NULL;
1147 struct cxgbit_np *cnp;
1148 struct cpl_pass_accept_req *req = cplhdr(skb);
1149 unsigned int stid = PASS_OPEN_TID_G(ntohl(req->tos_stid));
1150 struct tid_info *t = cdev->lldi.tids;
1151 unsigned int tid = GET_TID(req);
1152 u16 peer_mss = ntohs(req->tcpopt.mss);
1153 unsigned short hdrs;
1154
1155 struct dst_entry *dst;
1156 __u8 local_ip[16], peer_ip[16];
1157 __be16 local_port, peer_port;
1158 int ret;
1159 int iptype;
1160
1161 pr_debug("%s: cdev = %p; stid = %u; tid = %u\n",
1162 __func__, cdev, stid, tid);
1163
1164 cnp = lookup_stid(t, stid);
1165 if (!cnp) {
1166 pr_err("%s connect request on invalid stid %d\n",
1167 __func__, stid);
1168 goto rel_skb;
1169 }
1170
1171 if (cnp->com.state != CSK_STATE_LISTEN) {
1172 pr_err("%s - listening parent not in CSK_STATE_LISTEN\n",
1173 __func__);
1174 goto reject;
1175 }
1176
1177 csk = lookup_tid(t, tid);
1178 if (csk) {
1179 pr_err("%s csk not null tid %u\n",
1180 __func__, tid);
1181 goto rel_skb;
1182 }
1183
1184 cxgb_get_4tuple(req, cdev->lldi.adapter_type, &iptype, local_ip,
1185 peer_ip, &local_port, &peer_port);
1186
1187 /* Find output route */
1188 if (iptype == 4) {
1189 pr_debug("%s parent sock %p tid %u laddr %pI4 raddr %pI4 "
1190 "lport %d rport %d peer_mss %d\n"
1191 , __func__, cnp, tid,
1192 local_ip, peer_ip, ntohs(local_port),
1193 ntohs(peer_port), peer_mss);
1194 dst = cxgb_find_route(&cdev->lldi, cxgbit_get_real_dev,
1195 *(__be32 *)local_ip,
1196 *(__be32 *)peer_ip,
1197 local_port, peer_port,
1198 PASS_OPEN_TOS_G(ntohl(req->tos_stid)));
1199 } else {
1200 pr_debug("%s parent sock %p tid %u laddr %pI6 raddr %pI6 "
1201 "lport %d rport %d peer_mss %d\n"
1202 , __func__, cnp, tid,
1203 local_ip, peer_ip, ntohs(local_port),
1204 ntohs(peer_port), peer_mss);
1205 dst = cxgb_find_route6(&cdev->lldi, cxgbit_get_real_dev,
1206 local_ip, peer_ip,
1207 local_port, peer_port,
1208 PASS_OPEN_TOS_G(ntohl(req->tos_stid)),
1209 ((struct sockaddr_in6 *)
1210 &cnp->com.local_addr)->sin6_scope_id);
1211 }
1212 if (!dst) {
1213 pr_err("%s - failed to find dst entry!\n",
1214 __func__);
1215 goto reject;
1216 }
1217
1218 csk = kzalloc(sizeof(*csk), GFP_ATOMIC);
1219 if (!csk) {
1220 dst_release(dst);
1221 goto rel_skb;
1222 }
1223
1224 ret = cxgbit_offload_init(csk, iptype, peer_ip, ntohs(local_port),
1225 dst, cdev);
1226 if (ret) {
1227 pr_err("%s - failed to allocate l2t entry!\n",
1228 __func__);
1229 dst_release(dst);
1230 kfree(csk);
1231 goto reject;
1232 }
1233
1234 kref_init(&csk->kref);
1235 init_completion(&csk->com.wr_wait.completion);
1236
1237 INIT_LIST_HEAD(&csk->accept_node);
1238
1239 hdrs = (iptype == 4 ? sizeof(struct iphdr) : sizeof(struct ipv6hdr)) +
1240 sizeof(struct tcphdr) + (req->tcpopt.tstamp ? 12 : 0);
1241 if (peer_mss && csk->mtu > (peer_mss + hdrs))
1242 csk->mtu = peer_mss + hdrs;
1243
1244 csk->com.state = CSK_STATE_CONNECTING;
1245 csk->com.cdev = cdev;
1246 csk->cnp = cnp;
1247 csk->tos = PASS_OPEN_TOS_G(ntohl(req->tos_stid));
1248 csk->dst = dst;
1249 csk->tid = tid;
1250 csk->wr_cred = cdev->lldi.wr_cred -
1251 DIV_ROUND_UP(sizeof(struct cpl_abort_req), 16);
1252 csk->wr_max_cred = csk->wr_cred;
1253 csk->wr_una_cred = 0;
1254
1255 if (iptype == 4) {
1256 struct sockaddr_in *sin = (struct sockaddr_in *)
1257 &csk->com.local_addr;
1258 sin->sin_family = AF_INET;
1259 sin->sin_port = local_port;
1260 sin->sin_addr.s_addr = *(__be32 *)local_ip;
1261
1262 sin = (struct sockaddr_in *)&csk->com.remote_addr;
1263 sin->sin_family = AF_INET;
1264 sin->sin_port = peer_port;
1265 sin->sin_addr.s_addr = *(__be32 *)peer_ip;
1266 } else {
1267 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)
1268 &csk->com.local_addr;
1269
1270 sin6->sin6_family = PF_INET6;
1271 sin6->sin6_port = local_port;
1272 memcpy(sin6->sin6_addr.s6_addr, local_ip, 16);
1273 cxgb4_clip_get(cdev->lldi.ports[0],
1274 (const u32 *)&sin6->sin6_addr.s6_addr,
1275 1);
1276
1277 sin6 = (struct sockaddr_in6 *)&csk->com.remote_addr;
1278 sin6->sin6_family = PF_INET6;
1279 sin6->sin6_port = peer_port;
1280 memcpy(sin6->sin6_addr.s6_addr, peer_ip, 16);
1281 }
1282
1283 skb_queue_head_init(&csk->rxq);
1284 skb_queue_head_init(&csk->txq);
1285 skb_queue_head_init(&csk->ppodq);
1286 skb_queue_head_init(&csk->backlogq);
1287 skb_queue_head_init(&csk->skbq);
1288 cxgbit_sock_reset_wr_list(csk);
1289 spin_lock_init(&csk->lock);
1290 init_waitqueue_head(&csk->waitq);
1291 init_waitqueue_head(&csk->ack_waitq);
1292 csk->lock_owner = false;
1293
1294 if (cxgbit_alloc_csk_skb(csk)) {
1295 dst_release(dst);
1296 kfree(csk);
1297 goto rel_skb;
1298 }
1299
1300 cxgbit_get_cdev(cdev);
1301
1302 spin_lock(&cdev->cskq.lock);
1303 list_add_tail(&csk->list, &cdev->cskq.list);
1304 spin_unlock(&cdev->cskq.lock);
1305
1306 cxgb4_insert_tid(t, csk, tid);
1307 cxgbit_pass_accept_rpl(csk, req);
1308 goto rel_skb;
1309
1310 reject:
1311 cxgbit_release_tid(cdev, tid);
1312 rel_skb:
1313 __kfree_skb(skb);
1314 }
1315
1316 static u32
1317 cxgbit_tx_flowc_wr_credits(struct cxgbit_sock *csk, u32 *nparamsp,
1318 u32 *flowclenp)
1319 {
1320 u32 nparams, flowclen16, flowclen;
1321
1322 nparams = FLOWC_WR_NPARAMS_MIN;
1323
1324 if (csk->snd_wscale)
1325 nparams++;
1326
1327 #ifdef CONFIG_CHELSIO_T4_DCB
1328 nparams++;
1329 #endif
1330 flowclen = offsetof(struct fw_flowc_wr, mnemval[nparams]);
1331 flowclen16 = DIV_ROUND_UP(flowclen, 16);
1332 flowclen = flowclen16 * 16;
1333 /*
1334 * Return the number of 16-byte credits used by the flowc request.
1335 * Pass back the nparams and actual flowc length if requested.
1336 */
1337 if (nparamsp)
1338 *nparamsp = nparams;
1339 if (flowclenp)
1340 *flowclenp = flowclen;
1341 return flowclen16;
1342 }
1343
1344 u32 cxgbit_send_tx_flowc_wr(struct cxgbit_sock *csk)
1345 {
1346 struct cxgbit_device *cdev = csk->com.cdev;
1347 struct fw_flowc_wr *flowc;
1348 u32 nparams, flowclen16, flowclen;
1349 struct sk_buff *skb;
1350 u8 index;
1351
1352 #ifdef CONFIG_CHELSIO_T4_DCB
1353 u16 vlan = ((struct l2t_entry *)csk->l2t)->vlan;
1354 #endif
1355
1356 flowclen16 = cxgbit_tx_flowc_wr_credits(csk, &nparams, &flowclen);
1357
1358 skb = __skb_dequeue(&csk->skbq);
1359 flowc = (struct fw_flowc_wr *)__skb_put(skb, flowclen);
1360 memset(flowc, 0, flowclen);
1361
1362 flowc->op_to_nparams = cpu_to_be32(FW_WR_OP_V(FW_FLOWC_WR) |
1363 FW_FLOWC_WR_NPARAMS_V(nparams));
1364 flowc->flowid_len16 = cpu_to_be32(FW_WR_LEN16_V(flowclen16) |
1365 FW_WR_FLOWID_V(csk->tid));
1366 flowc->mnemval[0].mnemonic = FW_FLOWC_MNEM_PFNVFN;
1367 flowc->mnemval[0].val = cpu_to_be32(FW_PFVF_CMD_PFN_V
1368 (csk->com.cdev->lldi.pf));
1369 flowc->mnemval[1].mnemonic = FW_FLOWC_MNEM_CH;
1370 flowc->mnemval[1].val = cpu_to_be32(csk->tx_chan);
1371 flowc->mnemval[2].mnemonic = FW_FLOWC_MNEM_PORT;
1372 flowc->mnemval[2].val = cpu_to_be32(csk->tx_chan);
1373 flowc->mnemval[3].mnemonic = FW_FLOWC_MNEM_IQID;
1374 flowc->mnemval[3].val = cpu_to_be32(csk->rss_qid);
1375 flowc->mnemval[4].mnemonic = FW_FLOWC_MNEM_SNDNXT;
1376 flowc->mnemval[4].val = cpu_to_be32(csk->snd_nxt);
1377 flowc->mnemval[5].mnemonic = FW_FLOWC_MNEM_RCVNXT;
1378 flowc->mnemval[5].val = cpu_to_be32(csk->rcv_nxt);
1379 flowc->mnemval[6].mnemonic = FW_FLOWC_MNEM_SNDBUF;
1380 flowc->mnemval[6].val = cpu_to_be32(csk->snd_win);
1381 flowc->mnemval[7].mnemonic = FW_FLOWC_MNEM_MSS;
1382 flowc->mnemval[7].val = cpu_to_be32(csk->emss);
1383
1384 flowc->mnemval[8].mnemonic = FW_FLOWC_MNEM_TXDATAPLEN_MAX;
1385 if (test_bit(CDEV_ISO_ENABLE, &cdev->flags))
1386 flowc->mnemval[8].val = cpu_to_be32(CXGBIT_MAX_ISO_PAYLOAD);
1387 else
1388 flowc->mnemval[8].val = cpu_to_be32(16384);
1389
1390 index = 9;
1391
1392 if (csk->snd_wscale) {
1393 flowc->mnemval[index].mnemonic = FW_FLOWC_MNEM_RCV_SCALE;
1394 flowc->mnemval[index].val = cpu_to_be32(csk->snd_wscale);
1395 index++;
1396 }
1397
1398 #ifdef CONFIG_CHELSIO_T4_DCB
1399 flowc->mnemval[index].mnemonic = FW_FLOWC_MNEM_DCBPRIO;
1400 if (vlan == VLAN_NONE) {
1401 pr_warn("csk %u without VLAN Tag on DCB Link\n", csk->tid);
1402 flowc->mnemval[index].val = cpu_to_be32(0);
1403 } else
1404 flowc->mnemval[index].val = cpu_to_be32(
1405 (vlan & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT);
1406 #endif
1407
1408 pr_debug("%s: csk %p; tx_chan = %u; rss_qid = %u; snd_seq = %u;"
1409 " rcv_seq = %u; snd_win = %u; emss = %u\n",
1410 __func__, csk, csk->tx_chan, csk->rss_qid, csk->snd_nxt,
1411 csk->rcv_nxt, csk->snd_win, csk->emss);
1412 set_wr_txq(skb, CPL_PRIORITY_DATA, csk->txq_idx);
1413 cxgbit_ofld_send(csk->com.cdev, skb);
1414 return flowclen16;
1415 }
1416
1417 int cxgbit_setup_conn_digest(struct cxgbit_sock *csk)
1418 {
1419 struct sk_buff *skb;
1420 struct cpl_set_tcb_field *req;
1421 u8 hcrc = csk->submode & CXGBIT_SUBMODE_HCRC;
1422 u8 dcrc = csk->submode & CXGBIT_SUBMODE_DCRC;
1423 unsigned int len = roundup(sizeof(*req), 16);
1424 int ret;
1425
1426 skb = alloc_skb(len, GFP_KERNEL);
1427 if (!skb)
1428 return -ENOMEM;
1429
1430 /* set up ulp submode */
1431 req = (struct cpl_set_tcb_field *)__skb_put(skb, len);
1432 memset(req, 0, len);
1433
1434 INIT_TP_WR(req, csk->tid);
1435 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, csk->tid));
1436 req->reply_ctrl = htons(NO_REPLY_V(0) | QUEUENO_V(csk->rss_qid));
1437 req->word_cookie = htons(0);
1438 req->mask = cpu_to_be64(0x3 << 4);
1439 req->val = cpu_to_be64(((hcrc ? ULP_CRC_HEADER : 0) |
1440 (dcrc ? ULP_CRC_DATA : 0)) << 4);
1441 set_wr_txq(skb, CPL_PRIORITY_CONTROL, csk->ctrlq_idx);
1442
1443 cxgbit_get_csk(csk);
1444 cxgbit_init_wr_wait(&csk->com.wr_wait);
1445
1446 cxgbit_ofld_send(csk->com.cdev, skb);
1447
1448 ret = cxgbit_wait_for_reply(csk->com.cdev,
1449 &csk->com.wr_wait,
1450 csk->tid, 5, __func__);
1451 if (ret)
1452 return -1;
1453
1454 return 0;
1455 }
1456
1457 int cxgbit_setup_conn_pgidx(struct cxgbit_sock *csk, u32 pg_idx)
1458 {
1459 struct sk_buff *skb;
1460 struct cpl_set_tcb_field *req;
1461 unsigned int len = roundup(sizeof(*req), 16);
1462 int ret;
1463
1464 skb = alloc_skb(len, GFP_KERNEL);
1465 if (!skb)
1466 return -ENOMEM;
1467
1468 req = (struct cpl_set_tcb_field *)__skb_put(skb, len);
1469 memset(req, 0, len);
1470
1471 INIT_TP_WR(req, csk->tid);
1472 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, csk->tid));
1473 req->reply_ctrl = htons(NO_REPLY_V(0) | QUEUENO_V(csk->rss_qid));
1474 req->word_cookie = htons(0);
1475 req->mask = cpu_to_be64(0x3 << 8);
1476 req->val = cpu_to_be64(pg_idx << 8);
1477 set_wr_txq(skb, CPL_PRIORITY_CONTROL, csk->ctrlq_idx);
1478
1479 cxgbit_get_csk(csk);
1480 cxgbit_init_wr_wait(&csk->com.wr_wait);
1481
1482 cxgbit_ofld_send(csk->com.cdev, skb);
1483
1484 ret = cxgbit_wait_for_reply(csk->com.cdev,
1485 &csk->com.wr_wait,
1486 csk->tid, 5, __func__);
1487 if (ret)
1488 return -1;
1489
1490 return 0;
1491 }
1492
1493 static void
1494 cxgbit_pass_open_rpl(struct cxgbit_device *cdev, struct sk_buff *skb)
1495 {
1496 struct cpl_pass_open_rpl *rpl = cplhdr(skb);
1497 struct tid_info *t = cdev->lldi.tids;
1498 unsigned int stid = GET_TID(rpl);
1499 struct cxgbit_np *cnp = lookup_stid(t, stid);
1500
1501 pr_debug("%s: cnp = %p; stid = %u; status = %d\n",
1502 __func__, cnp, stid, rpl->status);
1503
1504 if (!cnp) {
1505 pr_info("%s stid %d lookup failure\n", __func__, stid);
1506 return;
1507 }
1508
1509 cxgbit_wake_up(&cnp->com.wr_wait, __func__, rpl->status);
1510 cxgbit_put_cnp(cnp);
1511 }
1512
1513 static void
1514 cxgbit_close_listsrv_rpl(struct cxgbit_device *cdev, struct sk_buff *skb)
1515 {
1516 struct cpl_close_listsvr_rpl *rpl = cplhdr(skb);
1517 struct tid_info *t = cdev->lldi.tids;
1518 unsigned int stid = GET_TID(rpl);
1519 struct cxgbit_np *cnp = lookup_stid(t, stid);
1520
1521 pr_debug("%s: cnp = %p; stid = %u; status = %d\n",
1522 __func__, cnp, stid, rpl->status);
1523
1524 if (!cnp) {
1525 pr_info("%s stid %d lookup failure\n", __func__, stid);
1526 return;
1527 }
1528
1529 cxgbit_wake_up(&cnp->com.wr_wait, __func__, rpl->status);
1530 cxgbit_put_cnp(cnp);
1531 }
1532
1533 static void
1534 cxgbit_pass_establish(struct cxgbit_device *cdev, struct sk_buff *skb)
1535 {
1536 struct cpl_pass_establish *req = cplhdr(skb);
1537 struct tid_info *t = cdev->lldi.tids;
1538 unsigned int tid = GET_TID(req);
1539 struct cxgbit_sock *csk;
1540 struct cxgbit_np *cnp;
1541 u16 tcp_opt = be16_to_cpu(req->tcp_opt);
1542 u32 snd_isn = be32_to_cpu(req->snd_isn);
1543 u32 rcv_isn = be32_to_cpu(req->rcv_isn);
1544
1545 csk = lookup_tid(t, tid);
1546 if (unlikely(!csk)) {
1547 pr_err("can't find connection for tid %u.\n", tid);
1548 goto rel_skb;
1549 }
1550 cnp = csk->cnp;
1551
1552 pr_debug("%s: csk %p; tid %u; cnp %p\n",
1553 __func__, csk, tid, cnp);
1554
1555 csk->write_seq = snd_isn;
1556 csk->snd_una = snd_isn;
1557 csk->snd_nxt = snd_isn;
1558
1559 csk->rcv_nxt = rcv_isn;
1560
1561 if (csk->rcv_win > (RCV_BUFSIZ_M << 10))
1562 csk->rx_credits = (csk->rcv_win - (RCV_BUFSIZ_M << 10));
1563
1564 csk->snd_wscale = TCPOPT_SND_WSCALE_G(tcp_opt);
1565 cxgbit_set_emss(csk, tcp_opt);
1566 dst_confirm(csk->dst);
1567 csk->com.state = CSK_STATE_ESTABLISHED;
1568 spin_lock_bh(&cnp->np_accept_lock);
1569 list_add_tail(&csk->accept_node, &cnp->np_accept_list);
1570 spin_unlock_bh(&cnp->np_accept_lock);
1571 complete(&cnp->accept_comp);
1572 rel_skb:
1573 __kfree_skb(skb);
1574 }
1575
1576 static void cxgbit_queue_rx_skb(struct cxgbit_sock *csk, struct sk_buff *skb)
1577 {
1578 cxgbit_skcb_flags(skb) = 0;
1579 spin_lock_bh(&csk->rxq.lock);
1580 __skb_queue_tail(&csk->rxq, skb);
1581 spin_unlock_bh(&csk->rxq.lock);
1582 wake_up(&csk->waitq);
1583 }
1584
1585 static void cxgbit_peer_close(struct cxgbit_sock *csk, struct sk_buff *skb)
1586 {
1587 pr_debug("%s: csk %p; tid %u; state %d\n",
1588 __func__, csk, csk->tid, csk->com.state);
1589
1590 switch (csk->com.state) {
1591 case CSK_STATE_ESTABLISHED:
1592 csk->com.state = CSK_STATE_CLOSING;
1593 cxgbit_queue_rx_skb(csk, skb);
1594 return;
1595 case CSK_STATE_CLOSING:
1596 /* simultaneous close */
1597 csk->com.state = CSK_STATE_MORIBUND;
1598 break;
1599 case CSK_STATE_MORIBUND:
1600 csk->com.state = CSK_STATE_DEAD;
1601 cxgbit_put_csk(csk);
1602 break;
1603 case CSK_STATE_ABORTING:
1604 break;
1605 default:
1606 pr_info("%s: cpl_peer_close in bad state %d\n",
1607 __func__, csk->com.state);
1608 }
1609
1610 __kfree_skb(skb);
1611 }
1612
1613 static void cxgbit_close_con_rpl(struct cxgbit_sock *csk, struct sk_buff *skb)
1614 {
1615 pr_debug("%s: csk %p; tid %u; state %d\n",
1616 __func__, csk, csk->tid, csk->com.state);
1617
1618 switch (csk->com.state) {
1619 case CSK_STATE_CLOSING:
1620 csk->com.state = CSK_STATE_MORIBUND;
1621 break;
1622 case CSK_STATE_MORIBUND:
1623 csk->com.state = CSK_STATE_DEAD;
1624 cxgbit_put_csk(csk);
1625 break;
1626 case CSK_STATE_ABORTING:
1627 case CSK_STATE_DEAD:
1628 break;
1629 default:
1630 pr_info("%s: cpl_close_con_rpl in bad state %d\n",
1631 __func__, csk->com.state);
1632 }
1633
1634 __kfree_skb(skb);
1635 }
1636
1637 static void cxgbit_abort_req_rss(struct cxgbit_sock *csk, struct sk_buff *skb)
1638 {
1639 struct cpl_abort_req_rss *hdr = cplhdr(skb);
1640 unsigned int tid = GET_TID(hdr);
1641 struct sk_buff *rpl_skb;
1642 bool release = false;
1643 bool wakeup_thread = false;
1644 u32 len = roundup(sizeof(struct cpl_abort_rpl), 16);
1645
1646 pr_debug("%s: csk %p; tid %u; state %d\n",
1647 __func__, csk, tid, csk->com.state);
1648
1649 if (cxgb_is_neg_adv(hdr->status)) {
1650 pr_err("%s: got neg advise %d on tid %u\n",
1651 __func__, hdr->status, tid);
1652 goto rel_skb;
1653 }
1654
1655 switch (csk->com.state) {
1656 case CSK_STATE_CONNECTING:
1657 case CSK_STATE_MORIBUND:
1658 csk->com.state = CSK_STATE_DEAD;
1659 release = true;
1660 break;
1661 case CSK_STATE_ESTABLISHED:
1662 csk->com.state = CSK_STATE_DEAD;
1663 wakeup_thread = true;
1664 break;
1665 case CSK_STATE_CLOSING:
1666 csk->com.state = CSK_STATE_DEAD;
1667 if (!csk->conn)
1668 release = true;
1669 break;
1670 case CSK_STATE_ABORTING:
1671 break;
1672 default:
1673 pr_info("%s: cpl_abort_req_rss in bad state %d\n",
1674 __func__, csk->com.state);
1675 csk->com.state = CSK_STATE_DEAD;
1676 }
1677
1678 __skb_queue_purge(&csk->txq);
1679
1680 if (!test_and_set_bit(CSK_TX_DATA_SENT, &csk->com.flags))
1681 cxgbit_send_tx_flowc_wr(csk);
1682
1683 rpl_skb = __skb_dequeue(&csk->skbq);
1684
1685 cxgb_mk_abort_rpl(rpl_skb, len, csk->tid, csk->txq_idx);
1686 cxgbit_ofld_send(csk->com.cdev, rpl_skb);
1687
1688 if (wakeup_thread) {
1689 cxgbit_queue_rx_skb(csk, skb);
1690 return;
1691 }
1692
1693 if (release)
1694 cxgbit_put_csk(csk);
1695 rel_skb:
1696 __kfree_skb(skb);
1697 }
1698
1699 static void cxgbit_abort_rpl_rss(struct cxgbit_sock *csk, struct sk_buff *skb)
1700 {
1701 pr_debug("%s: csk %p; tid %u; state %d\n",
1702 __func__, csk, csk->tid, csk->com.state);
1703
1704 switch (csk->com.state) {
1705 case CSK_STATE_ABORTING:
1706 csk->com.state = CSK_STATE_DEAD;
1707 cxgbit_put_csk(csk);
1708 break;
1709 default:
1710 pr_info("%s: cpl_abort_rpl_rss in state %d\n",
1711 __func__, csk->com.state);
1712 }
1713
1714 __kfree_skb(skb);
1715 }
1716
1717 static bool cxgbit_credit_err(const struct cxgbit_sock *csk)
1718 {
1719 const struct sk_buff *skb = csk->wr_pending_head;
1720 u32 credit = 0;
1721
1722 if (unlikely(csk->wr_cred > csk->wr_max_cred)) {
1723 pr_err("csk 0x%p, tid %u, credit %u > %u\n",
1724 csk, csk->tid, csk->wr_cred, csk->wr_max_cred);
1725 return true;
1726 }
1727
1728 while (skb) {
1729 credit += skb->csum;
1730 skb = cxgbit_skcb_tx_wr_next(skb);
1731 }
1732
1733 if (unlikely((csk->wr_cred + credit) != csk->wr_max_cred)) {
1734 pr_err("csk 0x%p, tid %u, credit %u + %u != %u.\n",
1735 csk, csk->tid, csk->wr_cred,
1736 credit, csk->wr_max_cred);
1737
1738 return true;
1739 }
1740
1741 return false;
1742 }
1743
1744 static void cxgbit_fw4_ack(struct cxgbit_sock *csk, struct sk_buff *skb)
1745 {
1746 struct cpl_fw4_ack *rpl = (struct cpl_fw4_ack *)cplhdr(skb);
1747 u32 credits = rpl->credits;
1748 u32 snd_una = ntohl(rpl->snd_una);
1749
1750 csk->wr_cred += credits;
1751 if (csk->wr_una_cred > (csk->wr_max_cred - csk->wr_cred))
1752 csk->wr_una_cred = csk->wr_max_cred - csk->wr_cred;
1753
1754 while (credits) {
1755 struct sk_buff *p = cxgbit_sock_peek_wr(csk);
1756
1757 if (unlikely(!p)) {
1758 pr_err("csk 0x%p,%u, cr %u,%u+%u, empty.\n",
1759 csk, csk->tid, credits,
1760 csk->wr_cred, csk->wr_una_cred);
1761 break;
1762 }
1763
1764 if (unlikely(credits < p->csum)) {
1765 pr_warn("csk 0x%p,%u, cr %u,%u+%u, < %u.\n",
1766 csk, csk->tid,
1767 credits, csk->wr_cred, csk->wr_una_cred,
1768 p->csum);
1769 p->csum -= credits;
1770 break;
1771 }
1772
1773 cxgbit_sock_dequeue_wr(csk);
1774 credits -= p->csum;
1775 kfree_skb(p);
1776 }
1777
1778 if (unlikely(cxgbit_credit_err(csk))) {
1779 cxgbit_queue_rx_skb(csk, skb);
1780 return;
1781 }
1782
1783 if (rpl->seq_vld & CPL_FW4_ACK_FLAGS_SEQVAL) {
1784 if (unlikely(before(snd_una, csk->snd_una))) {
1785 pr_warn("csk 0x%p,%u, snd_una %u/%u.",
1786 csk, csk->tid, snd_una,
1787 csk->snd_una);
1788 goto rel_skb;
1789 }
1790
1791 if (csk->snd_una != snd_una) {
1792 csk->snd_una = snd_una;
1793 dst_confirm(csk->dst);
1794 wake_up(&csk->ack_waitq);
1795 }
1796 }
1797
1798 if (skb_queue_len(&csk->txq))
1799 cxgbit_push_tx_frames(csk);
1800
1801 rel_skb:
1802 __kfree_skb(skb);
1803 }
1804
1805 static void cxgbit_set_tcb_rpl(struct cxgbit_device *cdev, struct sk_buff *skb)
1806 {
1807 struct cxgbit_sock *csk;
1808 struct cpl_set_tcb_rpl *rpl = (struct cpl_set_tcb_rpl *)skb->data;
1809 unsigned int tid = GET_TID(rpl);
1810 struct cxgb4_lld_info *lldi = &cdev->lldi;
1811 struct tid_info *t = lldi->tids;
1812
1813 csk = lookup_tid(t, tid);
1814 if (unlikely(!csk))
1815 pr_err("can't find connection for tid %u.\n", tid);
1816 else
1817 cxgbit_wake_up(&csk->com.wr_wait, __func__, rpl->status);
1818
1819 cxgbit_put_csk(csk);
1820 }
1821
1822 static void cxgbit_rx_data(struct cxgbit_device *cdev, struct sk_buff *skb)
1823 {
1824 struct cxgbit_sock *csk;
1825 struct cpl_rx_data *cpl = cplhdr(skb);
1826 unsigned int tid = GET_TID(cpl);
1827 struct cxgb4_lld_info *lldi = &cdev->lldi;
1828 struct tid_info *t = lldi->tids;
1829
1830 csk = lookup_tid(t, tid);
1831 if (unlikely(!csk)) {
1832 pr_err("can't find conn. for tid %u.\n", tid);
1833 goto rel_skb;
1834 }
1835
1836 cxgbit_queue_rx_skb(csk, skb);
1837 return;
1838 rel_skb:
1839 __kfree_skb(skb);
1840 }
1841
1842 static void
1843 __cxgbit_process_rx_cpl(struct cxgbit_sock *csk, struct sk_buff *skb)
1844 {
1845 spin_lock(&csk->lock);
1846 if (csk->lock_owner) {
1847 __skb_queue_tail(&csk->backlogq, skb);
1848 spin_unlock(&csk->lock);
1849 return;
1850 }
1851
1852 cxgbit_skcb_rx_backlog_fn(skb)(csk, skb);
1853 spin_unlock(&csk->lock);
1854 }
1855
1856 static void cxgbit_process_rx_cpl(struct cxgbit_sock *csk, struct sk_buff *skb)
1857 {
1858 cxgbit_get_csk(csk);
1859 __cxgbit_process_rx_cpl(csk, skb);
1860 cxgbit_put_csk(csk);
1861 }
1862
1863 static void cxgbit_rx_cpl(struct cxgbit_device *cdev, struct sk_buff *skb)
1864 {
1865 struct cxgbit_sock *csk;
1866 struct cpl_tx_data *cpl = cplhdr(skb);
1867 struct cxgb4_lld_info *lldi = &cdev->lldi;
1868 struct tid_info *t = lldi->tids;
1869 unsigned int tid = GET_TID(cpl);
1870 u8 opcode = cxgbit_skcb_rx_opcode(skb);
1871 bool ref = true;
1872
1873 switch (opcode) {
1874 case CPL_FW4_ACK:
1875 cxgbit_skcb_rx_backlog_fn(skb) = cxgbit_fw4_ack;
1876 ref = false;
1877 break;
1878 case CPL_PEER_CLOSE:
1879 cxgbit_skcb_rx_backlog_fn(skb) = cxgbit_peer_close;
1880 break;
1881 case CPL_CLOSE_CON_RPL:
1882 cxgbit_skcb_rx_backlog_fn(skb) = cxgbit_close_con_rpl;
1883 break;
1884 case CPL_ABORT_REQ_RSS:
1885 cxgbit_skcb_rx_backlog_fn(skb) = cxgbit_abort_req_rss;
1886 break;
1887 case CPL_ABORT_RPL_RSS:
1888 cxgbit_skcb_rx_backlog_fn(skb) = cxgbit_abort_rpl_rss;
1889 break;
1890 default:
1891 goto rel_skb;
1892 }
1893
1894 csk = lookup_tid(t, tid);
1895 if (unlikely(!csk)) {
1896 pr_err("can't find conn. for tid %u.\n", tid);
1897 goto rel_skb;
1898 }
1899
1900 if (ref)
1901 cxgbit_process_rx_cpl(csk, skb);
1902 else
1903 __cxgbit_process_rx_cpl(csk, skb);
1904
1905 return;
1906 rel_skb:
1907 __kfree_skb(skb);
1908 }
1909
1910 cxgbit_cplhandler_func cxgbit_cplhandlers[NUM_CPL_CMDS] = {
1911 [CPL_PASS_OPEN_RPL] = cxgbit_pass_open_rpl,
1912 [CPL_CLOSE_LISTSRV_RPL] = cxgbit_close_listsrv_rpl,
1913 [CPL_PASS_ACCEPT_REQ] = cxgbit_pass_accept_req,
1914 [CPL_PASS_ESTABLISH] = cxgbit_pass_establish,
1915 [CPL_SET_TCB_RPL] = cxgbit_set_tcb_rpl,
1916 [CPL_RX_DATA] = cxgbit_rx_data,
1917 [CPL_FW4_ACK] = cxgbit_rx_cpl,
1918 [CPL_PEER_CLOSE] = cxgbit_rx_cpl,
1919 [CPL_CLOSE_CON_RPL] = cxgbit_rx_cpl,
1920 [CPL_ABORT_REQ_RSS] = cxgbit_rx_cpl,
1921 [CPL_ABORT_RPL_RSS] = cxgbit_rx_cpl,
1922 };
Linux with added FPC-III support