1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) 2018 Chelsio Communications, Inc.
4 *
5 * Written by: Atul Gupta (atul.gupta@chelsio.com)
6 */
7
8 #include <linux/module.h>
9 #include <linux/list.h>
10 #include <linux/workqueue.h>
11 #include <linux/skbuff.h>
12 #include <linux/timer.h>
13 #include <linux/notifier.h>
14 #include <linux/inetdevice.h>
15 #include <linux/ip.h>
16 #include <linux/tcp.h>
17 #include <linux/sched/signal.h>
18 #include <linux/kallsyms.h>
19 #include <linux/kprobes.h>
20 #include <linux/if_vlan.h>
21 #include <linux/ipv6.h>
22 #include <net/ipv6.h>
23 #include <net/transp_v6.h>
24 #include <net/ip6_route.h>
25 #include <net/inet_common.h>
26 #include <net/tcp.h>
27 #include <net/dst.h>
28 #include <net/tls.h>
29 #include <net/addrconf.h>
30 #include <net/secure_seq.h>
31
32 #include "chtls.h"
33 #include "chtls_cm.h"
34 #include "clip_tbl.h"
35 #include "t4_tcb.h"
36
37 /*
38 * State transitions and actions for close. Note that if we are in SYN_SENT
39 * we remain in that state as we cannot control a connection while it's in
40 * SYN_SENT; such connections are allowed to establish and are then aborted.
41 */
42 static unsigned char new_state[16] = {
43 /* current state: new state: action: */
44 /* (Invalid) */ TCP_CLOSE,
45 /* TCP_ESTABLISHED */ TCP_FIN_WAIT1 | TCP_ACTION_FIN,
46 /* TCP_SYN_SENT */ TCP_SYN_SENT,
47 /* TCP_SYN_RECV */ TCP_FIN_WAIT1 | TCP_ACTION_FIN,
48 /* TCP_FIN_WAIT1 */ TCP_FIN_WAIT1,
49 /* TCP_FIN_WAIT2 */ TCP_FIN_WAIT2,
50 /* TCP_TIME_WAIT */ TCP_CLOSE,
51 /* TCP_CLOSE */ TCP_CLOSE,
52 /* TCP_CLOSE_WAIT */ TCP_LAST_ACK | TCP_ACTION_FIN,
53 /* TCP_LAST_ACK */ TCP_LAST_ACK,
54 /* TCP_LISTEN */ TCP_CLOSE,
55 /* TCP_CLOSING */ TCP_CLOSING,
56 };
57
chtls_sock_create(struct chtls_dev * cdev)58 static struct chtls_sock *chtls_sock_create(struct chtls_dev *cdev)
59 {
60 struct chtls_sock *csk = kzalloc(sizeof(*csk), GFP_ATOMIC);
61
62 if (!csk)
63 return NULL;
64
65 csk->txdata_skb_cache = alloc_skb(TXDATA_SKB_LEN, GFP_ATOMIC);
66 if (!csk->txdata_skb_cache) {
67 kfree(csk);
68 return NULL;
69 }
70
71 kref_init(&csk->kref);
72 csk->cdev = cdev;
73 skb_queue_head_init(&csk->txq);
74 csk->wr_skb_head = NULL;
75 csk->wr_skb_tail = NULL;
76 csk->mss = MAX_MSS;
77 csk->tlshws.ofld = 1;
78 csk->tlshws.txkey = -1;
79 csk->tlshws.rxkey = -1;
80 csk->tlshws.mfs = TLS_MFS;
81 skb_queue_head_init(&csk->tlshws.sk_recv_queue);
82 return csk;
83 }
84
chtls_sock_release(struct kref * ref)85 static void chtls_sock_release(struct kref *ref)
86 {
87 struct chtls_sock *csk =
88 container_of(ref, struct chtls_sock, kref);
89
90 kfree(csk);
91 }
92
chtls_find_netdev(struct chtls_dev * cdev,struct sock * sk)93 static struct net_device *chtls_find_netdev(struct chtls_dev *cdev,
94 struct sock *sk)
95 {
96 struct adapter *adap = pci_get_drvdata(cdev->pdev);
97 struct net_device *ndev = cdev->ports[0];
98 #if IS_ENABLED(CONFIG_IPV6)
99 struct net_device *temp;
100 int addr_type;
101 #endif
102 int i;
103
104 switch (sk->sk_family) {
105 case PF_INET:
106 if (likely(!inet_sk(sk)->inet_rcv_saddr))
107 return ndev;
108 ndev = __ip_dev_find(&init_net, inet_sk(sk)->inet_rcv_saddr, false);
109 break;
110 #if IS_ENABLED(CONFIG_IPV6)
111 case PF_INET6:
112 addr_type = ipv6_addr_type(&sk->sk_v6_rcv_saddr);
113 if (likely(addr_type == IPV6_ADDR_ANY))
114 return ndev;
115
116 for_each_netdev_rcu(&init_net, temp) {
117 if (ipv6_chk_addr(&init_net, (struct in6_addr *)
118 &sk->sk_v6_rcv_saddr, temp, 1)) {
119 ndev = temp;
120 break;
121 }
122 }
123 break;
124 #endif
125 default:
126 return NULL;
127 }
128
129 if (!ndev)
130 return NULL;
131
132 if (is_vlan_dev(ndev))
133 ndev = vlan_dev_real_dev(ndev);
134
135 for_each_port(adap, i)
136 if (cdev->ports[i] == ndev)
137 return ndev;
138 return NULL;
139 }
140
assign_rxopt(struct sock * sk,unsigned int opt)141 static void assign_rxopt(struct sock *sk, unsigned int opt)
142 {
143 const struct chtls_dev *cdev;
144 struct chtls_sock *csk;
145 struct tcp_sock *tp;
146
147 csk = rcu_dereference_sk_user_data(sk);
148 tp = tcp_sk(sk);
149
150 cdev = csk->cdev;
151 tp->tcp_header_len = sizeof(struct tcphdr);
152 tp->rx_opt.mss_clamp = cdev->mtus[TCPOPT_MSS_G(opt)] - 40;
153 tp->mss_cache = tp->rx_opt.mss_clamp;
154 tp->rx_opt.tstamp_ok = TCPOPT_TSTAMP_G(opt);
155 tp->rx_opt.snd_wscale = TCPOPT_SACK_G(opt);
156 tp->rx_opt.wscale_ok = TCPOPT_WSCALE_OK_G(opt);
157 SND_WSCALE(tp) = TCPOPT_SND_WSCALE_G(opt);
158 if (!tp->rx_opt.wscale_ok)
159 tp->rx_opt.rcv_wscale = 0;
160 if (tp->rx_opt.tstamp_ok) {
161 tp->tcp_header_len += TCPOLEN_TSTAMP_ALIGNED;
162 tp->rx_opt.mss_clamp -= TCPOLEN_TSTAMP_ALIGNED;
163 } else if (csk->opt2 & TSTAMPS_EN_F) {
164 csk->opt2 &= ~TSTAMPS_EN_F;
165 csk->mtu_idx = TCPOPT_MSS_G(opt);
166 }
167 }
168
chtls_purge_receive_queue(struct sock * sk)169 static void chtls_purge_receive_queue(struct sock *sk)
170 {
171 struct sk_buff *skb;
172
173 while ((skb = __skb_dequeue(&sk->sk_receive_queue)) != NULL) {
174 skb_dst_set(skb, (void *)NULL);
175 kfree_skb(skb);
176 }
177 }
178
chtls_purge_write_queue(struct sock * sk)179 static void chtls_purge_write_queue(struct sock *sk)
180 {
181 struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
182 struct sk_buff *skb;
183
184 while ((skb = __skb_dequeue(&csk->txq))) {
185 sk->sk_wmem_queued -= skb->truesize;
186 __kfree_skb(skb);
187 }
188 }
189
chtls_purge_recv_queue(struct sock * sk)190 static void chtls_purge_recv_queue(struct sock *sk)
191 {
192 struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
193 struct chtls_hws *tlsk = &csk->tlshws;
194 struct sk_buff *skb;
195
196 while ((skb = __skb_dequeue(&tlsk->sk_recv_queue)) != NULL) {
197 skb_dst_set(skb, NULL);
198 kfree_skb(skb);
199 }
200 }
201
abort_arp_failure(void * handle,struct sk_buff * skb)202 static void abort_arp_failure(void *handle, struct sk_buff *skb)
203 {
204 struct cpl_abort_req *req = cplhdr(skb);
205 struct chtls_dev *cdev;
206
207 cdev = (struct chtls_dev *)handle;
208 req->cmd = CPL_ABORT_NO_RST;
209 cxgb4_ofld_send(cdev->lldi->ports[0], skb);
210 }
211
alloc_ctrl_skb(struct sk_buff * skb,int len)212 static struct sk_buff *alloc_ctrl_skb(struct sk_buff *skb, int len)
213 {
214 if (likely(skb && !skb_shared(skb) && !skb_cloned(skb))) {
215 __skb_trim(skb, 0);
216 refcount_inc(&skb->users);
217 } else {
218 skb = alloc_skb(len, GFP_KERNEL | __GFP_NOFAIL);
219 }
220 return skb;
221 }
222
chtls_send_abort(struct sock * sk,int mode,struct sk_buff * skb)223 static void chtls_send_abort(struct sock *sk, int mode, struct sk_buff *skb)
224 {
225 struct cpl_abort_req *req;
226 struct chtls_sock *csk;
227 struct tcp_sock *tp;
228
229 csk = rcu_dereference_sk_user_data(sk);
230 tp = tcp_sk(sk);
231
232 if (!skb)
233 skb = alloc_ctrl_skb(csk->txdata_skb_cache, sizeof(*req));
234
235 req = (struct cpl_abort_req *)skb_put(skb, sizeof(*req));
236 INIT_TP_WR_CPL(req, CPL_ABORT_REQ, csk->tid);
237 skb_set_queue_mapping(skb, (csk->txq_idx << 1) | CPL_PRIORITY_DATA);
238 req->rsvd0 = htonl(tp->snd_nxt);
239 req->rsvd1 = !csk_flag_nochk(csk, CSK_TX_DATA_SENT);
240 req->cmd = mode;
241 t4_set_arp_err_handler(skb, csk->cdev, abort_arp_failure);
242 send_or_defer(sk, tp, skb, mode == CPL_ABORT_SEND_RST);
243 }
244
chtls_send_reset(struct sock * sk,int mode,struct sk_buff * skb)245 static void chtls_send_reset(struct sock *sk, int mode, struct sk_buff *skb)
246 {
247 struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
248
249 if (unlikely(csk_flag_nochk(csk, CSK_ABORT_SHUTDOWN) ||
250 !csk->cdev)) {
251 if (sk->sk_state == TCP_SYN_RECV)
252 csk_set_flag(csk, CSK_RST_ABORTED);
253 goto out;
254 }
255
256 if (!csk_flag_nochk(csk, CSK_TX_DATA_SENT)) {
257 struct tcp_sock *tp = tcp_sk(sk);
258
259 if (send_tx_flowc_wr(sk, 0, tp->snd_nxt, tp->rcv_nxt) < 0)
260 WARN_ONCE(1, "send tx flowc error");
261 csk_set_flag(csk, CSK_TX_DATA_SENT);
262 }
263
264 csk_set_flag(csk, CSK_ABORT_RPL_PENDING);
265 chtls_purge_write_queue(sk);
266
267 csk_set_flag(csk, CSK_ABORT_SHUTDOWN);
268 if (sk->sk_state != TCP_SYN_RECV)
269 chtls_send_abort(sk, mode, skb);
270 else
271 chtls_set_tcb_field_rpl_skb(sk, TCB_T_FLAGS_W,
272 TCB_T_FLAGS_V(TCB_T_FLAGS_M), 0,
273 TCB_FIELD_COOKIE_TFLAG, 1);
274
275 return;
276 out:
277 kfree_skb(skb);
278 }
279
release_tcp_port(struct sock * sk)280 static void release_tcp_port(struct sock *sk)
281 {
282 if (inet_csk(sk)->icsk_bind_hash)
283 inet_put_port(sk);
284 }
285
tcp_uncork(struct sock * sk)286 static void tcp_uncork(struct sock *sk)
287 {
288 struct tcp_sock *tp = tcp_sk(sk);
289
290 if (tp->nonagle & TCP_NAGLE_CORK) {
291 tp->nonagle &= ~TCP_NAGLE_CORK;
292 chtls_tcp_push(sk, 0);
293 }
294 }
295
chtls_close_conn(struct sock * sk)296 static void chtls_close_conn(struct sock *sk)
297 {
298 struct cpl_close_con_req *req;
299 struct chtls_sock *csk;
300 struct sk_buff *skb;
301 unsigned int tid;
302 unsigned int len;
303
304 len = roundup(sizeof(struct cpl_close_con_req), 16);
305 csk = rcu_dereference_sk_user_data(sk);
306 tid = csk->tid;
307
308 skb = alloc_skb(len, GFP_KERNEL | __GFP_NOFAIL);
309 req = (struct cpl_close_con_req *)__skb_put(skb, len);
310 memset(req, 0, len);
311 req->wr.wr_hi = htonl(FW_WR_OP_V(FW_TP_WR) |
312 FW_WR_IMMDLEN_V(sizeof(*req) -
313 sizeof(req->wr)));
314 req->wr.wr_mid = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*req), 16)) |
315 FW_WR_FLOWID_V(tid));
316
317 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_CLOSE_CON_REQ, tid));
318
319 tcp_uncork(sk);
320 skb_entail(sk, skb, ULPCB_FLAG_NO_HDR | ULPCB_FLAG_NO_APPEND);
321 if (sk->sk_state != TCP_SYN_SENT)
322 chtls_push_frames(csk, 1);
323 }
324
325 /*
326 * Perform a state transition during close and return the actions indicated
327 * for the transition. Do not make this function inline, the main reason
328 * it exists at all is to avoid multiple inlining of tcp_set_state.
329 */
make_close_transition(struct sock * sk)330 static int make_close_transition(struct sock *sk)
331 {
332 int next = (int)new_state[sk->sk_state];
333
334 tcp_set_state(sk, next & TCP_STATE_MASK);
335 return next & TCP_ACTION_FIN;
336 }
337
chtls_close(struct sock * sk,long timeout)338 void chtls_close(struct sock *sk, long timeout)
339 {
340 int data_lost, prev_state;
341 struct chtls_sock *csk;
342
343 csk = rcu_dereference_sk_user_data(sk);
344
345 lock_sock(sk);
346 sk->sk_shutdown |= SHUTDOWN_MASK;
347
348 data_lost = skb_queue_len(&sk->sk_receive_queue);
349 data_lost |= skb_queue_len(&csk->tlshws.sk_recv_queue);
350 chtls_purge_recv_queue(sk);
351 chtls_purge_receive_queue(sk);
352
353 if (sk->sk_state == TCP_CLOSE) {
354 goto wait;
355 } else if (data_lost || sk->sk_state == TCP_SYN_SENT) {
356 chtls_send_reset(sk, CPL_ABORT_SEND_RST, NULL);
357 release_tcp_port(sk);
358 goto unlock;
359 } else if (sock_flag(sk, SOCK_LINGER) && !sk->sk_lingertime) {
360 sk->sk_prot->disconnect(sk, 0);
361 } else if (make_close_transition(sk)) {
362 chtls_close_conn(sk);
363 }
364 wait:
365 if (timeout)
366 sk_stream_wait_close(sk, timeout);
367
368 unlock:
369 prev_state = sk->sk_state;
370 sock_hold(sk);
371 sock_orphan(sk);
372
373 release_sock(sk);
374
375 local_bh_disable();
376 bh_lock_sock(sk);
377
378 if (prev_state != TCP_CLOSE && sk->sk_state == TCP_CLOSE)
379 goto out;
380
381 if (sk->sk_state == TCP_FIN_WAIT2 && tcp_sk(sk)->linger2 < 0 &&
382 !csk_flag(sk, CSK_ABORT_SHUTDOWN)) {
383 struct sk_buff *skb;
384
385 skb = alloc_skb(sizeof(struct cpl_abort_req), GFP_ATOMIC);
386 if (skb)
387 chtls_send_reset(sk, CPL_ABORT_SEND_RST, skb);
388 }
389
390 if (sk->sk_state == TCP_CLOSE)
391 inet_csk_destroy_sock(sk);
392
393 out:
394 bh_unlock_sock(sk);
395 local_bh_enable();
396 sock_put(sk);
397 }
398
399 /*
400 * Wait until a socket enters on of the given states.
401 */
wait_for_states(struct sock * sk,unsigned int states)402 static int wait_for_states(struct sock *sk, unsigned int states)
403 {
404 DECLARE_WAITQUEUE(wait, current);
405 struct socket_wq _sk_wq;
406 long current_timeo;
407 int err = 0;
408
409 current_timeo = 200;
410
411 /*
412 * We want this to work even when there's no associated struct socket.
413 * In that case we provide a temporary wait_queue_head_t.
414 */
415 if (!sk->sk_wq) {
416 init_waitqueue_head(&_sk_wq.wait);
417 _sk_wq.fasync_list = NULL;
418 init_rcu_head_on_stack(&_sk_wq.rcu);
419 RCU_INIT_POINTER(sk->sk_wq, &_sk_wq);
420 }
421
422 add_wait_queue(sk_sleep(sk), &wait);
423 while (!sk_in_state(sk, states)) {
424 if (!current_timeo) {
425 err = -EBUSY;
426 break;
427 }
428 if (signal_pending(current)) {
429 err = sock_intr_errno(current_timeo);
430 break;
431 }
432 set_current_state(TASK_UNINTERRUPTIBLE);
433 release_sock(sk);
434 if (!sk_in_state(sk, states))
435 current_timeo = schedule_timeout(current_timeo);
436 __set_current_state(TASK_RUNNING);
437 lock_sock(sk);
438 }
439 remove_wait_queue(sk_sleep(sk), &wait);
440
441 if (rcu_dereference(sk->sk_wq) == &_sk_wq)
442 sk->sk_wq = NULL;
443 return err;
444 }
445
chtls_disconnect(struct sock * sk,int flags)446 int chtls_disconnect(struct sock *sk, int flags)
447 {
448 struct tcp_sock *tp;
449 int err;
450
451 tp = tcp_sk(sk);
452 chtls_purge_recv_queue(sk);
453 chtls_purge_receive_queue(sk);
454 chtls_purge_write_queue(sk);
455
456 if (sk->sk_state != TCP_CLOSE) {
457 sk->sk_err = ECONNRESET;
458 chtls_send_reset(sk, CPL_ABORT_SEND_RST, NULL);
459 err = wait_for_states(sk, TCPF_CLOSE);
460 if (err)
461 return err;
462 }
463 chtls_purge_recv_queue(sk);
464 chtls_purge_receive_queue(sk);
465 tp->max_window = 0xFFFF << (tp->rx_opt.snd_wscale);
466 return tcp_disconnect(sk, flags);
467 }
468
469 #define SHUTDOWN_ELIGIBLE_STATE (TCPF_ESTABLISHED | \
470 TCPF_SYN_RECV | TCPF_CLOSE_WAIT)
chtls_shutdown(struct sock * sk,int how)471 void chtls_shutdown(struct sock *sk, int how)
472 {
473 if ((how & SEND_SHUTDOWN) &&
474 sk_in_state(sk, SHUTDOWN_ELIGIBLE_STATE) &&
475 make_close_transition(sk))
476 chtls_close_conn(sk);
477 }
478
chtls_destroy_sock(struct sock * sk)479 void chtls_destroy_sock(struct sock *sk)
480 {
481 struct chtls_sock *csk;
482
483 csk = rcu_dereference_sk_user_data(sk);
484 chtls_purge_recv_queue(sk);
485 csk->ulp_mode = ULP_MODE_NONE;
486 chtls_purge_write_queue(sk);
487 free_tls_keyid(sk);
488 kref_put(&csk->kref, chtls_sock_release);
489 if (sk->sk_family == AF_INET)
490 sk->sk_prot = &tcp_prot;
491 #if IS_ENABLED(CONFIG_IPV6)
492 else
493 sk->sk_prot = &tcpv6_prot;
494 #endif
495 sk->sk_prot->destroy(sk);
496 }
497
reset_listen_child(struct sock * child)498 static void reset_listen_child(struct sock *child)
499 {
500 struct chtls_sock *csk = rcu_dereference_sk_user_data(child);
501 struct sk_buff *skb;
502
503 skb = alloc_ctrl_skb(csk->txdata_skb_cache,
504 sizeof(struct cpl_abort_req));
505
506 chtls_send_reset(child, CPL_ABORT_SEND_RST, skb);
507 sock_orphan(child);
508 INC_ORPHAN_COUNT(child);
509 if (child->sk_state == TCP_CLOSE)
510 inet_csk_destroy_sock(child);
511 }
512
chtls_disconnect_acceptq(struct sock * listen_sk)513 static void chtls_disconnect_acceptq(struct sock *listen_sk)
514 {
515 struct request_sock **pprev;
516
517 pprev = ACCEPT_QUEUE(listen_sk);
518 while (*pprev) {
519 struct request_sock *req = *pprev;
520
521 if (req->rsk_ops == &chtls_rsk_ops ||
522 req->rsk_ops == &chtls_rsk_opsv6) {
523 struct sock *child = req->sk;
524
525 *pprev = req->dl_next;
526 sk_acceptq_removed(listen_sk);
527 reqsk_put(req);
528 sock_hold(child);
529 local_bh_disable();
530 bh_lock_sock(child);
531 release_tcp_port(child);
532 reset_listen_child(child);
533 bh_unlock_sock(child);
534 local_bh_enable();
535 sock_put(child);
536 } else {
537 pprev = &req->dl_next;
538 }
539 }
540 }
541
listen_hashfn(const struct sock * sk)542 static int listen_hashfn(const struct sock *sk)
543 {
544 return ((unsigned long)sk >> 10) & (LISTEN_INFO_HASH_SIZE - 1);
545 }
546
listen_hash_add(struct chtls_dev * cdev,struct sock * sk,unsigned int stid)547 static struct listen_info *listen_hash_add(struct chtls_dev *cdev,
548 struct sock *sk,
549 unsigned int stid)
550 {
551 struct listen_info *p = kmalloc(sizeof(*p), GFP_KERNEL);
552
553 if (p) {
554 int key = listen_hashfn(sk);
555
556 p->sk = sk;
557 p->stid = stid;
558 spin_lock(&cdev->listen_lock);
559 p->next = cdev->listen_hash_tab[key];
560 cdev->listen_hash_tab[key] = p;
561 spin_unlock(&cdev->listen_lock);
562 }
563 return p;
564 }
565
listen_hash_find(struct chtls_dev * cdev,struct sock * sk)566 static int listen_hash_find(struct chtls_dev *cdev,
567 struct sock *sk)
568 {
569 struct listen_info *p;
570 int stid = -1;
571 int key;
572
573 key = listen_hashfn(sk);
574
575 spin_lock(&cdev->listen_lock);
576 for (p = cdev->listen_hash_tab[key]; p; p = p->next)
577 if (p->sk == sk) {
578 stid = p->stid;
579 break;
580 }
581 spin_unlock(&cdev->listen_lock);
582 return stid;
583 }
584
listen_hash_del(struct chtls_dev * cdev,struct sock * sk)585 static int listen_hash_del(struct chtls_dev *cdev,
586 struct sock *sk)
587 {
588 struct listen_info *p, **prev;
589 int stid = -1;
590 int key;
591
592 key = listen_hashfn(sk);
593 prev = &cdev->listen_hash_tab[key];
594
595 spin_lock(&cdev->listen_lock);
596 for (p = *prev; p; prev = &p->next, p = p->next)
597 if (p->sk == sk) {
598 stid = p->stid;
599 *prev = p->next;
600 kfree(p);
601 break;
602 }
603 spin_unlock(&cdev->listen_lock);
604 return stid;
605 }
606
cleanup_syn_rcv_conn(struct sock * child,struct sock * parent)607 static void cleanup_syn_rcv_conn(struct sock *child, struct sock *parent)
608 {
609 struct request_sock *req;
610 struct chtls_sock *csk;
611
612 csk = rcu_dereference_sk_user_data(child);
613 req = csk->passive_reap_next;
614
615 reqsk_queue_removed(&inet_csk(parent)->icsk_accept_queue, req);
616 __skb_unlink((struct sk_buff *)&csk->synq, &csk->listen_ctx->synq);
617 chtls_reqsk_free(req);
618 csk->passive_reap_next = NULL;
619 }
620
chtls_reset_synq(struct listen_ctx * listen_ctx)621 static void chtls_reset_synq(struct listen_ctx *listen_ctx)
622 {
623 struct sock *listen_sk = listen_ctx->lsk;
624
625 while (!skb_queue_empty(&listen_ctx->synq)) {
626 struct chtls_sock *csk =
627 container_of((struct synq *)skb_peek
628 (&listen_ctx->synq), struct chtls_sock, synq);
629 struct sock *child = csk->sk;
630
631 cleanup_syn_rcv_conn(child, listen_sk);
632 sock_hold(child);
633 local_bh_disable();
634 bh_lock_sock(child);
635 release_tcp_port(child);
636 reset_listen_child(child);
637 bh_unlock_sock(child);
638 local_bh_enable();
639 sock_put(child);
640 }
641 }
642
chtls_listen_start(struct chtls_dev * cdev,struct sock * sk)643 int chtls_listen_start(struct chtls_dev *cdev, struct sock *sk)
644 {
645 struct net_device *ndev;
646 #if IS_ENABLED(CONFIG_IPV6)
647 bool clip_valid = false;
648 #endif
649 struct listen_ctx *ctx;
650 struct adapter *adap;
651 struct port_info *pi;
652 int ret = 0;
653 int stid;
654
655 rcu_read_lock();
656 ndev = chtls_find_netdev(cdev, sk);
657 rcu_read_unlock();
658 if (!ndev)
659 return -EBADF;
660
661 pi = netdev_priv(ndev);
662 adap = pi->adapter;
663 if (!(adap->flags & CXGB4_FULL_INIT_DONE))
664 return -EBADF;
665
666 if (listen_hash_find(cdev, sk) >= 0) /* already have it */
667 return -EADDRINUSE;
668
669 ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
670 if (!ctx)
671 return -ENOMEM;
672
673 __module_get(THIS_MODULE);
674 ctx->lsk = sk;
675 ctx->cdev = cdev;
676 ctx->state = T4_LISTEN_START_PENDING;
677 skb_queue_head_init(&ctx->synq);
678
679 stid = cxgb4_alloc_stid(cdev->tids, sk->sk_family, ctx);
680 if (stid < 0)
681 goto free_ctx;
682
683 sock_hold(sk);
684 if (!listen_hash_add(cdev, sk, stid))
685 goto free_stid;
686
687 if (sk->sk_family == PF_INET) {
688 ret = cxgb4_create_server(ndev, stid,
689 inet_sk(sk)->inet_rcv_saddr,
690 inet_sk(sk)->inet_sport, 0,
691 cdev->lldi->rxq_ids[0]);
692 #if IS_ENABLED(CONFIG_IPV6)
693 } else {
694 int addr_type;
695
696 addr_type = ipv6_addr_type(&sk->sk_v6_rcv_saddr);
697 if (addr_type != IPV6_ADDR_ANY) {
698 ret = cxgb4_clip_get(ndev, (const u32 *)
699 &sk->sk_v6_rcv_saddr, 1);
700 if (ret)
701 goto del_hash;
702 clip_valid = true;
703 }
704 ret = cxgb4_create_server6(ndev, stid,
705 &sk->sk_v6_rcv_saddr,
706 inet_sk(sk)->inet_sport,
707 cdev->lldi->rxq_ids[0]);
708 #endif
709 }
710 if (ret > 0)
711 ret = net_xmit_errno(ret);
712 if (ret)
713 goto del_hash;
714 return 0;
715 del_hash:
716 #if IS_ENABLED(CONFIG_IPV6)
717 if (clip_valid)
718 cxgb4_clip_release(ndev, (const u32 *)&sk->sk_v6_rcv_saddr, 1);
719 #endif
720 listen_hash_del(cdev, sk);
721 free_stid:
722 cxgb4_free_stid(cdev->tids, stid, sk->sk_family);
723 sock_put(sk);
724 free_ctx:
725 kfree(ctx);
726 module_put(THIS_MODULE);
727 return -EBADF;
728 }
729
chtls_listen_stop(struct chtls_dev * cdev,struct sock * sk)730 void chtls_listen_stop(struct chtls_dev *cdev, struct sock *sk)
731 {
732 struct listen_ctx *listen_ctx;
733 int stid;
734
735 stid = listen_hash_del(cdev, sk);
736 if (stid < 0)
737 return;
738
739 listen_ctx = (struct listen_ctx *)lookup_stid(cdev->tids, stid);
740 chtls_reset_synq(listen_ctx);
741
742 cxgb4_remove_server(cdev->lldi->ports[0], stid,
743 cdev->lldi->rxq_ids[0], sk->sk_family == PF_INET6);
744
745 #if IS_ENABLED(CONFIG_IPV6)
746 if (sk->sk_family == PF_INET6) {
747 struct net_device *ndev = chtls_find_netdev(cdev, sk);
748 int addr_type = 0;
749
750 addr_type = ipv6_addr_type((const struct in6_addr *)
751 &sk->sk_v6_rcv_saddr);
752 if (addr_type != IPV6_ADDR_ANY)
753 cxgb4_clip_release(ndev, (const u32 *)
754 &sk->sk_v6_rcv_saddr, 1);
755 }
756 #endif
757 chtls_disconnect_acceptq(sk);
758 }
759
chtls_pass_open_rpl(struct chtls_dev * cdev,struct sk_buff * skb)760 static int chtls_pass_open_rpl(struct chtls_dev *cdev, struct sk_buff *skb)
761 {
762 struct cpl_pass_open_rpl *rpl = cplhdr(skb) + RSS_HDR;
763 unsigned int stid = GET_TID(rpl);
764 struct listen_ctx *listen_ctx;
765
766 listen_ctx = (struct listen_ctx *)lookup_stid(cdev->tids, stid);
767 if (!listen_ctx)
768 return CPL_RET_BUF_DONE;
769
770 if (listen_ctx->state == T4_LISTEN_START_PENDING) {
771 listen_ctx->state = T4_LISTEN_STARTED;
772 return CPL_RET_BUF_DONE;
773 }
774
775 if (rpl->status != CPL_ERR_NONE) {
776 pr_info("Unexpected PASS_OPEN_RPL status %u for STID %u\n",
777 rpl->status, stid);
778 } else {
779 cxgb4_free_stid(cdev->tids, stid, listen_ctx->lsk->sk_family);
780 sock_put(listen_ctx->lsk);
781 kfree(listen_ctx);
782 module_put(THIS_MODULE);
783 }
784 return CPL_RET_BUF_DONE;
785 }
786
chtls_close_listsrv_rpl(struct chtls_dev * cdev,struct sk_buff * skb)787 static int chtls_close_listsrv_rpl(struct chtls_dev *cdev, struct sk_buff *skb)
788 {
789 struct cpl_close_listsvr_rpl *rpl = cplhdr(skb) + RSS_HDR;
790 struct listen_ctx *listen_ctx;
791 unsigned int stid;
792 void *data;
793
794 stid = GET_TID(rpl);
795 data = lookup_stid(cdev->tids, stid);
796 listen_ctx = (struct listen_ctx *)data;
797
798 if (rpl->status != CPL_ERR_NONE) {
799 pr_info("Unexpected CLOSE_LISTSRV_RPL status %u for STID %u\n",
800 rpl->status, stid);
801 } else {
802 cxgb4_free_stid(cdev->tids, stid, listen_ctx->lsk->sk_family);
803 sock_put(listen_ctx->lsk);
804 kfree(listen_ctx);
805 module_put(THIS_MODULE);
806 }
807 return CPL_RET_BUF_DONE;
808 }
809
chtls_purge_wr_queue(struct sock * sk)810 static void chtls_purge_wr_queue(struct sock *sk)
811 {
812 struct sk_buff *skb;
813
814 while ((skb = dequeue_wr(sk)) != NULL)
815 kfree_skb(skb);
816 }
817
chtls_release_resources(struct sock * sk)818 static void chtls_release_resources(struct sock *sk)
819 {
820 struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
821 struct chtls_dev *cdev = csk->cdev;
822 unsigned int tid = csk->tid;
823 struct tid_info *tids;
824
825 if (!cdev)
826 return;
827
828 tids = cdev->tids;
829 kfree_skb(csk->txdata_skb_cache);
830 csk->txdata_skb_cache = NULL;
831
832 if (csk->wr_credits != csk->wr_max_credits) {
833 chtls_purge_wr_queue(sk);
834 chtls_reset_wr_list(csk);
835 }
836
837 if (csk->l2t_entry) {
838 cxgb4_l2t_release(csk->l2t_entry);
839 csk->l2t_entry = NULL;
840 }
841
842 if (sk->sk_state != TCP_SYN_SENT) {
843 cxgb4_remove_tid(tids, csk->port_id, tid, sk->sk_family);
844 sock_put(sk);
845 }
846 }
847
chtls_conn_done(struct sock * sk)848 static void chtls_conn_done(struct sock *sk)
849 {
850 if (sock_flag(sk, SOCK_DEAD))
851 chtls_purge_receive_queue(sk);
852 sk_wakeup_sleepers(sk, 0);
853 tcp_done(sk);
854 }
855
do_abort_syn_rcv(struct sock * child,struct sock * parent)856 static void do_abort_syn_rcv(struct sock *child, struct sock *parent)
857 {
858 /*
859 * If the server is still open we clean up the child connection,
860 * otherwise the server already did the clean up as it was purging
861 * its SYN queue and the skb was just sitting in its backlog.
862 */
863 if (likely(parent->sk_state == TCP_LISTEN)) {
864 cleanup_syn_rcv_conn(child, parent);
865 /* Without the below call to sock_orphan,
866 * we leak the socket resource with syn_flood test
867 * as inet_csk_destroy_sock will not be called
868 * in tcp_done since SOCK_DEAD flag is not set.
869 * Kernel handles this differently where new socket is
870 * created only after 3 way handshake is done.
871 */
872 sock_orphan(child);
873 INC_ORPHAN_COUNT(child);
874 chtls_release_resources(child);
875 chtls_conn_done(child);
876 } else {
877 if (csk_flag(child, CSK_RST_ABORTED)) {
878 chtls_release_resources(child);
879 chtls_conn_done(child);
880 }
881 }
882 }
883
pass_open_abort(struct sock * child,struct sock * parent,struct sk_buff * skb)884 static void pass_open_abort(struct sock *child, struct sock *parent,
885 struct sk_buff *skb)
886 {
887 do_abort_syn_rcv(child, parent);
888 kfree_skb(skb);
889 }
890
bl_pass_open_abort(struct sock * lsk,struct sk_buff * skb)891 static void bl_pass_open_abort(struct sock *lsk, struct sk_buff *skb)
892 {
893 pass_open_abort(skb->sk, lsk, skb);
894 }
895
chtls_pass_open_arp_failure(struct sock * sk,struct sk_buff * skb)896 static void chtls_pass_open_arp_failure(struct sock *sk,
897 struct sk_buff *skb)
898 {
899 const struct request_sock *oreq;
900 struct chtls_sock *csk;
901 struct chtls_dev *cdev;
902 struct sock *parent;
903 void *data;
904
905 csk = rcu_dereference_sk_user_data(sk);
906 cdev = csk->cdev;
907
908 /*
909 * If the connection is being aborted due to the parent listening
910 * socket going away there's nothing to do, the ABORT_REQ will close
911 * the connection.
912 */
913 if (csk_flag(sk, CSK_ABORT_RPL_PENDING)) {
914 kfree_skb(skb);
915 return;
916 }
917
918 oreq = csk->passive_reap_next;
919 data = lookup_stid(cdev->tids, oreq->ts_recent);
920 parent = ((struct listen_ctx *)data)->lsk;
921
922 bh_lock_sock(parent);
923 if (!sock_owned_by_user(parent)) {
924 pass_open_abort(sk, parent, skb);
925 } else {
926 BLOG_SKB_CB(skb)->backlog_rcv = bl_pass_open_abort;
927 __sk_add_backlog(parent, skb);
928 }
929 bh_unlock_sock(parent);
930 }
931
chtls_accept_rpl_arp_failure(void * handle,struct sk_buff * skb)932 static void chtls_accept_rpl_arp_failure(void *handle,
933 struct sk_buff *skb)
934 {
935 struct sock *sk = (struct sock *)handle;
936
937 sock_hold(sk);
938 process_cpl_msg(chtls_pass_open_arp_failure, sk, skb);
939 sock_put(sk);
940 }
941
chtls_select_mss(const struct chtls_sock * csk,unsigned int pmtu,struct cpl_pass_accept_req * req)942 static unsigned int chtls_select_mss(const struct chtls_sock *csk,
943 unsigned int pmtu,
944 struct cpl_pass_accept_req *req)
945 {
946 struct chtls_dev *cdev;
947 struct dst_entry *dst;
948 unsigned int tcpoptsz;
949 unsigned int iphdrsz;
950 unsigned int mtu_idx;
951 struct tcp_sock *tp;
952 unsigned int mss;
953 struct sock *sk;
954
955 mss = ntohs(req->tcpopt.mss);
956 sk = csk->sk;
957 dst = __sk_dst_get(sk);
958 cdev = csk->cdev;
959 tp = tcp_sk(sk);
960 tcpoptsz = 0;
961
962 #if IS_ENABLED(CONFIG_IPV6)
963 if (sk->sk_family == AF_INET6)
964 iphdrsz = sizeof(struct ipv6hdr) + sizeof(struct tcphdr);
965 else
966 #endif
967 iphdrsz = sizeof(struct iphdr) + sizeof(struct tcphdr);
968 if (req->tcpopt.tstamp)
969 tcpoptsz += round_up(TCPOLEN_TIMESTAMP, 4);
970
971 tp->advmss = dst_metric_advmss(dst);
972 if (USER_MSS(tp) && tp->advmss > USER_MSS(tp))
973 tp->advmss = USER_MSS(tp);
974 if (tp->advmss > pmtu - iphdrsz)
975 tp->advmss = pmtu - iphdrsz;
976 if (mss && tp->advmss > mss)
977 tp->advmss = mss;
978
979 tp->advmss = cxgb4_best_aligned_mtu(cdev->lldi->mtus,
980 iphdrsz + tcpoptsz,
981 tp->advmss - tcpoptsz,
982 8, &mtu_idx);
983 tp->advmss -= iphdrsz;
984
985 inet_csk(sk)->icsk_pmtu_cookie = pmtu;
986 return mtu_idx;
987 }
988
select_rcv_wscale(int space,int wscale_ok,int win_clamp)989 static unsigned int select_rcv_wscale(int space, int wscale_ok, int win_clamp)
990 {
991 int wscale = 0;
992
993 if (space > MAX_RCV_WND)
994 space = MAX_RCV_WND;
995 if (win_clamp && win_clamp < space)
996 space = win_clamp;
997
998 if (wscale_ok) {
999 while (wscale < 14 && (65535 << wscale) < space)
1000 wscale++;
1001 }
1002 return wscale;
1003 }
1004
chtls_pass_accept_rpl(struct sk_buff * skb,struct cpl_pass_accept_req * req,unsigned int tid)1005 static void chtls_pass_accept_rpl(struct sk_buff *skb,
1006 struct cpl_pass_accept_req *req,
1007 unsigned int tid)
1008
1009 {
1010 struct cpl_t5_pass_accept_rpl *rpl5;
1011 struct cxgb4_lld_info *lldi;
1012 const struct tcphdr *tcph;
1013 const struct tcp_sock *tp;
1014 struct chtls_sock *csk;
1015 unsigned int len;
1016 struct sock *sk;
1017 u32 opt2, hlen;
1018 u64 opt0;
1019
1020 sk = skb->sk;
1021 tp = tcp_sk(sk);
1022 csk = sk->sk_user_data;
1023 csk->tid = tid;
1024 lldi = csk->cdev->lldi;
1025 len = roundup(sizeof(*rpl5), 16);
1026
1027 rpl5 = __skb_put_zero(skb, len);
1028 INIT_TP_WR(rpl5, tid);
1029
1030 OPCODE_TID(rpl5) = cpu_to_be32(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL,
1031 csk->tid));
1032 csk->mtu_idx = chtls_select_mss(csk, dst_mtu(__sk_dst_get(sk)),
1033 req);
1034 opt0 = TCAM_BYPASS_F |
1035 WND_SCALE_V(RCV_WSCALE(tp)) |
1036 MSS_IDX_V(csk->mtu_idx) |
1037 L2T_IDX_V(csk->l2t_entry->idx) |
1038 NAGLE_V(!(tp->nonagle & TCP_NAGLE_OFF)) |
1039 TX_CHAN_V(csk->tx_chan) |
1040 SMAC_SEL_V(csk->smac_idx) |
1041 DSCP_V(csk->tos >> 2) |
1042 ULP_MODE_V(ULP_MODE_TLS) |
1043 RCV_BUFSIZ_V(min(tp->rcv_wnd >> 10, RCV_BUFSIZ_M));
1044
1045 opt2 = RX_CHANNEL_V(0) |
1046 RSS_QUEUE_VALID_F | RSS_QUEUE_V(csk->rss_qid);
1047
1048 if (!is_t5(lldi->adapter_type))
1049 opt2 |= RX_FC_DISABLE_F;
1050 if (req->tcpopt.tstamp)
1051 opt2 |= TSTAMPS_EN_F;
1052 if (req->tcpopt.sack)
1053 opt2 |= SACK_EN_F;
1054 hlen = ntohl(req->hdr_len);
1055
1056 tcph = (struct tcphdr *)((u8 *)(req + 1) +
1057 T6_ETH_HDR_LEN_G(hlen) + T6_IP_HDR_LEN_G(hlen));
1058 if (tcph->ece && tcph->cwr)
1059 opt2 |= CCTRL_ECN_V(1);
1060 opt2 |= CONG_CNTRL_V(CONG_ALG_NEWRENO);
1061 opt2 |= T5_ISS_F;
1062 opt2 |= T5_OPT_2_VALID_F;
1063 opt2 |= WND_SCALE_EN_V(WSCALE_OK(tp));
1064 rpl5->opt0 = cpu_to_be64(opt0);
1065 rpl5->opt2 = cpu_to_be32(opt2);
1066 rpl5->iss = cpu_to_be32((get_random_u32() & ~7UL) - 1);
1067 set_wr_txq(skb, CPL_PRIORITY_SETUP, csk->port_id);
1068 t4_set_arp_err_handler(skb, sk, chtls_accept_rpl_arp_failure);
1069 cxgb4_l2t_send(csk->egress_dev, skb, csk->l2t_entry);
1070 }
1071
inet_inherit_port(struct sock * lsk,struct sock * newsk)1072 static void inet_inherit_port(struct sock *lsk, struct sock *newsk)
1073 {
1074 local_bh_disable();
1075 __inet_inherit_port(lsk, newsk);
1076 local_bh_enable();
1077 }
1078
chtls_backlog_rcv(struct sock * sk,struct sk_buff * skb)1079 static int chtls_backlog_rcv(struct sock *sk, struct sk_buff *skb)
1080 {
1081 if (skb->protocol) {
1082 kfree_skb(skb);
1083 return 0;
1084 }
1085 BLOG_SKB_CB(skb)->backlog_rcv(sk, skb);
1086 return 0;
1087 }
1088
chtls_set_tcp_window(struct chtls_sock * csk)1089 static void chtls_set_tcp_window(struct chtls_sock *csk)
1090 {
1091 struct net_device *ndev = csk->egress_dev;
1092 struct port_info *pi = netdev_priv(ndev);
1093 unsigned int linkspeed;
1094 u8 scale;
1095
1096 linkspeed = pi->link_cfg.speed;
1097 scale = linkspeed / SPEED_10000;
1098 #define CHTLS_10G_RCVWIN (256 * 1024)
1099 csk->rcv_win = CHTLS_10G_RCVWIN;
1100 if (scale)
1101 csk->rcv_win *= scale;
1102 #define CHTLS_10G_SNDWIN (256 * 1024)
1103 csk->snd_win = CHTLS_10G_SNDWIN;
1104 if (scale)
1105 csk->snd_win *= scale;
1106 }
1107
chtls_recv_sock(struct sock * lsk,struct request_sock * oreq,void * network_hdr,const struct cpl_pass_accept_req * req,struct chtls_dev * cdev)1108 static struct sock *chtls_recv_sock(struct sock *lsk,
1109 struct request_sock *oreq,
1110 void *network_hdr,
1111 const struct cpl_pass_accept_req *req,
1112 struct chtls_dev *cdev)
1113 {
1114 struct adapter *adap = pci_get_drvdata(cdev->pdev);
1115 struct neighbour *n = NULL;
1116 struct inet_sock *newinet;
1117 const struct iphdr *iph;
1118 struct tls_context *ctx;
1119 struct net_device *ndev;
1120 struct chtls_sock *csk;
1121 struct dst_entry *dst;
1122 struct tcp_sock *tp;
1123 struct sock *newsk;
1124 bool found = false;
1125 u16 port_id;
1126 int rxq_idx;
1127 int step, i;
1128
1129 iph = (const struct iphdr *)network_hdr;
1130 newsk = tcp_create_openreq_child(lsk, oreq, cdev->askb);
1131 if (!newsk)
1132 goto free_oreq;
1133
1134 if (lsk->sk_family == AF_INET) {
1135 dst = inet_csk_route_child_sock(lsk, newsk, oreq);
1136 if (!dst)
1137 goto free_sk;
1138
1139 n = dst_neigh_lookup(dst, &iph->saddr);
1140 #if IS_ENABLED(CONFIG_IPV6)
1141 } else {
1142 const struct ipv6hdr *ip6h;
1143 struct flowi6 fl6;
1144
1145 ip6h = (const struct ipv6hdr *)network_hdr;
1146 memset(&fl6, 0, sizeof(fl6));
1147 fl6.flowi6_proto = IPPROTO_TCP;
1148 fl6.saddr = ip6h->daddr;
1149 fl6.daddr = ip6h->saddr;
1150 fl6.fl6_dport = inet_rsk(oreq)->ir_rmt_port;
1151 fl6.fl6_sport = htons(inet_rsk(oreq)->ir_num);
1152 security_req_classify_flow(oreq, flowi6_to_flowi_common(&fl6));
1153 dst = ip6_dst_lookup_flow(sock_net(lsk), lsk, &fl6, NULL);
1154 if (IS_ERR(dst))
1155 goto free_sk;
1156 n = dst_neigh_lookup(dst, &ip6h->saddr);
1157 #endif
1158 }
1159 if (!n || !n->dev)
1160 goto free_dst;
1161
1162 ndev = n->dev;
1163 if (is_vlan_dev(ndev))
1164 ndev = vlan_dev_real_dev(ndev);
1165
1166 for_each_port(adap, i)
1167 if (cdev->ports[i] == ndev)
1168 found = true;
1169
1170 if (!found)
1171 goto free_dst;
1172
1173 port_id = cxgb4_port_idx(ndev);
1174
1175 csk = chtls_sock_create(cdev);
1176 if (!csk)
1177 goto free_dst;
1178
1179 csk->l2t_entry = cxgb4_l2t_get(cdev->lldi->l2t, n, ndev, 0);
1180 if (!csk->l2t_entry)
1181 goto free_csk;
1182
1183 newsk->sk_user_data = csk;
1184 newsk->sk_backlog_rcv = chtls_backlog_rcv;
1185
1186 tp = tcp_sk(newsk);
1187 newinet = inet_sk(newsk);
1188
1189 if (iph->version == 0x4) {
1190 newinet->inet_daddr = iph->saddr;
1191 newinet->inet_rcv_saddr = iph->daddr;
1192 newinet->inet_saddr = iph->daddr;
1193 #if IS_ENABLED(CONFIG_IPV6)
1194 } else {
1195 struct tcp6_sock *newtcp6sk = (struct tcp6_sock *)newsk;
1196 struct inet_request_sock *treq = inet_rsk(oreq);
1197 struct ipv6_pinfo *newnp = inet6_sk(newsk);
1198 struct ipv6_pinfo *np = inet6_sk(lsk);
1199
1200 inet_sk(newsk)->pinet6 = &newtcp6sk->inet6;
1201 memcpy(newnp, np, sizeof(struct ipv6_pinfo));
1202 newsk->sk_v6_daddr = treq->ir_v6_rmt_addr;
1203 newsk->sk_v6_rcv_saddr = treq->ir_v6_loc_addr;
1204 inet6_sk(newsk)->saddr = treq->ir_v6_loc_addr;
1205 newnp->ipv6_fl_list = NULL;
1206 newnp->pktoptions = NULL;
1207 newsk->sk_bound_dev_if = treq->ir_iif;
1208 newinet->inet_opt = NULL;
1209 newinet->inet_daddr = LOOPBACK4_IPV6;
1210 newinet->inet_saddr = LOOPBACK4_IPV6;
1211 #endif
1212 }
1213
1214 oreq->ts_recent = PASS_OPEN_TID_G(ntohl(req->tos_stid));
1215 sk_setup_caps(newsk, dst);
1216 ctx = tls_get_ctx(lsk);
1217 newsk->sk_destruct = ctx->sk_destruct;
1218 newsk->sk_prot_creator = lsk->sk_prot_creator;
1219 csk->sk = newsk;
1220 csk->passive_reap_next = oreq;
1221 csk->tx_chan = cxgb4_port_chan(ndev);
1222 csk->port_id = port_id;
1223 csk->egress_dev = ndev;
1224 csk->tos = PASS_OPEN_TOS_G(ntohl(req->tos_stid));
1225 chtls_set_tcp_window(csk);
1226 tp->rcv_wnd = csk->rcv_win;
1227 csk->sndbuf = csk->snd_win;
1228 csk->ulp_mode = ULP_MODE_TLS;
1229 step = cdev->lldi->nrxq / cdev->lldi->nchan;
1230 rxq_idx = port_id * step;
1231 rxq_idx += cdev->round_robin_cnt++ % step;
1232 csk->rss_qid = cdev->lldi->rxq_ids[rxq_idx];
1233 csk->txq_idx = (rxq_idx < cdev->lldi->ntxq) ? rxq_idx :
1234 port_id * step;
1235 csk->sndbuf = newsk->sk_sndbuf;
1236 csk->smac_idx = ((struct port_info *)netdev_priv(ndev))->smt_idx;
1237 RCV_WSCALE(tp) = select_rcv_wscale(tcp_full_space(newsk),
1238 READ_ONCE(sock_net(newsk)->
1239 ipv4.sysctl_tcp_window_scaling),
1240 tp->window_clamp);
1241 neigh_release(n);
1242 inet_inherit_port(lsk, newsk);
1243 csk_set_flag(csk, CSK_CONN_INLINE);
1244 bh_unlock_sock(newsk); /* tcp_create_openreq_child ->sk_clone_lock */
1245
1246 return newsk;
1247 free_csk:
1248 chtls_sock_release(&csk->kref);
1249 free_dst:
1250 if (n)
1251 neigh_release(n);
1252 dst_release(dst);
1253 free_sk:
1254 inet_csk_prepare_forced_close(newsk);
1255 tcp_done(newsk);
1256 free_oreq:
1257 chtls_reqsk_free(oreq);
1258 return NULL;
1259 }
1260
1261 /*
1262 * Populate a TID_RELEASE WR. The skb must be already propely sized.
1263 */
mk_tid_release(struct sk_buff * skb,unsigned int chan,unsigned int tid)1264 static void mk_tid_release(struct sk_buff *skb,
1265 unsigned int chan, unsigned int tid)
1266 {
1267 struct cpl_tid_release *req;
1268 unsigned int len;
1269
1270 len = roundup(sizeof(struct cpl_tid_release), 16);
1271 req = (struct cpl_tid_release *)__skb_put(skb, len);
1272 memset(req, 0, len);
1273 set_wr_txq(skb, CPL_PRIORITY_SETUP, chan);
1274 INIT_TP_WR_CPL(req, CPL_TID_RELEASE, tid);
1275 }
1276
chtls_get_module(struct sock * sk)1277 static int chtls_get_module(struct sock *sk)
1278 {
1279 struct inet_connection_sock *icsk = inet_csk(sk);
1280
1281 if (!try_module_get(icsk->icsk_ulp_ops->owner))
1282 return -1;
1283
1284 return 0;
1285 }
1286
chtls_pass_accept_request(struct sock * sk,struct sk_buff * skb)1287 static void chtls_pass_accept_request(struct sock *sk,
1288 struct sk_buff *skb)
1289 {
1290 struct cpl_t5_pass_accept_rpl *rpl;
1291 struct cpl_pass_accept_req *req;
1292 struct listen_ctx *listen_ctx;
1293 struct vlan_ethhdr *vlan_eh;
1294 struct request_sock *oreq;
1295 struct sk_buff *reply_skb;
1296 struct chtls_sock *csk;
1297 struct chtls_dev *cdev;
1298 struct ipv6hdr *ip6h;
1299 struct tcphdr *tcph;
1300 struct sock *newsk;
1301 struct ethhdr *eh;
1302 struct iphdr *iph;
1303 void *network_hdr;
1304 unsigned int stid;
1305 unsigned int len;
1306 unsigned int tid;
1307 bool th_ecn, ect;
1308 __u8 ip_dsfield; /* IPv4 tos or IPv6 dsfield */
1309 u16 eth_hdr_len;
1310 bool ecn_ok;
1311
1312 req = cplhdr(skb) + RSS_HDR;
1313 tid = GET_TID(req);
1314 cdev = BLOG_SKB_CB(skb)->cdev;
1315 newsk = lookup_tid(cdev->tids, tid);
1316 stid = PASS_OPEN_TID_G(ntohl(req->tos_stid));
1317 if (newsk) {
1318 pr_info("tid (%d) already in use\n", tid);
1319 return;
1320 }
1321
1322 len = roundup(sizeof(*rpl), 16);
1323 reply_skb = alloc_skb(len, GFP_ATOMIC);
1324 if (!reply_skb) {
1325 cxgb4_remove_tid(cdev->tids, 0, tid, sk->sk_family);
1326 kfree_skb(skb);
1327 return;
1328 }
1329
1330 if (sk->sk_state != TCP_LISTEN)
1331 goto reject;
1332
1333 if (inet_csk_reqsk_queue_is_full(sk))
1334 goto reject;
1335
1336 if (sk_acceptq_is_full(sk))
1337 goto reject;
1338
1339
1340 eth_hdr_len = T6_ETH_HDR_LEN_G(ntohl(req->hdr_len));
1341 if (eth_hdr_len == ETH_HLEN) {
1342 eh = (struct ethhdr *)(req + 1);
1343 iph = (struct iphdr *)(eh + 1);
1344 ip6h = (struct ipv6hdr *)(eh + 1);
1345 network_hdr = (void *)(eh + 1);
1346 } else {
1347 vlan_eh = (struct vlan_ethhdr *)(req + 1);
1348 iph = (struct iphdr *)(vlan_eh + 1);
1349 ip6h = (struct ipv6hdr *)(vlan_eh + 1);
1350 network_hdr = (void *)(vlan_eh + 1);
1351 }
1352
1353 if (iph->version == 0x4) {
1354 tcph = (struct tcphdr *)(iph + 1);
1355 skb_set_network_header(skb, (void *)iph - (void *)req);
1356 oreq = inet_reqsk_alloc(&chtls_rsk_ops, sk, true);
1357 } else {
1358 tcph = (struct tcphdr *)(ip6h + 1);
1359 skb_set_network_header(skb, (void *)ip6h - (void *)req);
1360 oreq = inet_reqsk_alloc(&chtls_rsk_opsv6, sk, false);
1361 }
1362
1363 if (!oreq)
1364 goto reject;
1365
1366 oreq->rsk_rcv_wnd = 0;
1367 oreq->rsk_window_clamp = 0;
1368 oreq->syncookie = 0;
1369 oreq->mss = 0;
1370 oreq->ts_recent = 0;
1371
1372 tcp_rsk(oreq)->tfo_listener = false;
1373 tcp_rsk(oreq)->rcv_isn = ntohl(tcph->seq);
1374 chtls_set_req_port(oreq, tcph->source, tcph->dest);
1375 if (iph->version == 0x4) {
1376 chtls_set_req_addr(oreq, iph->daddr, iph->saddr);
1377 ip_dsfield = ipv4_get_dsfield(iph);
1378 #if IS_ENABLED(CONFIG_IPV6)
1379 } else {
1380 inet_rsk(oreq)->ir_v6_rmt_addr = ipv6_hdr(skb)->saddr;
1381 inet_rsk(oreq)->ir_v6_loc_addr = ipv6_hdr(skb)->daddr;
1382 ip_dsfield = ipv6_get_dsfield(ipv6_hdr(skb));
1383 #endif
1384 }
1385 if (req->tcpopt.wsf <= 14 &&
1386 READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_window_scaling)) {
1387 inet_rsk(oreq)->wscale_ok = 1;
1388 inet_rsk(oreq)->snd_wscale = req->tcpopt.wsf;
1389 }
1390 inet_rsk(oreq)->ir_iif = sk->sk_bound_dev_if;
1391 th_ecn = tcph->ece && tcph->cwr;
1392 if (th_ecn) {
1393 ect = !INET_ECN_is_not_ect(ip_dsfield);
1394 ecn_ok = READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_ecn);
1395 if ((!ect && ecn_ok) || tcp_ca_needs_ecn(sk))
1396 inet_rsk(oreq)->ecn_ok = 1;
1397 }
1398
1399 newsk = chtls_recv_sock(sk, oreq, network_hdr, req, cdev);
1400 if (!newsk)
1401 goto reject;
1402
1403 if (chtls_get_module(newsk))
1404 goto reject;
1405 inet_csk_reqsk_queue_added(sk);
1406 reply_skb->sk = newsk;
1407 chtls_install_cpl_ops(newsk);
1408 cxgb4_insert_tid(cdev->tids, newsk, tid, newsk->sk_family);
1409 csk = rcu_dereference_sk_user_data(newsk);
1410 listen_ctx = (struct listen_ctx *)lookup_stid(cdev->tids, stid);
1411 csk->listen_ctx = listen_ctx;
1412 __skb_queue_tail(&listen_ctx->synq, (struct sk_buff *)&csk->synq);
1413 chtls_pass_accept_rpl(reply_skb, req, tid);
1414 kfree_skb(skb);
1415 return;
1416
1417 reject:
1418 mk_tid_release(reply_skb, 0, tid);
1419 cxgb4_ofld_send(cdev->lldi->ports[0], reply_skb);
1420 kfree_skb(skb);
1421 }
1422
1423 /*
1424 * Handle a CPL_PASS_ACCEPT_REQ message.
1425 */
chtls_pass_accept_req(struct chtls_dev * cdev,struct sk_buff * skb)1426 static int chtls_pass_accept_req(struct chtls_dev *cdev, struct sk_buff *skb)
1427 {
1428 struct cpl_pass_accept_req *req = cplhdr(skb) + RSS_HDR;
1429 struct listen_ctx *ctx;
1430 unsigned int stid;
1431 unsigned int tid;
1432 struct sock *lsk;
1433 void *data;
1434
1435 stid = PASS_OPEN_TID_G(ntohl(req->tos_stid));
1436 tid = GET_TID(req);
1437
1438 data = lookup_stid(cdev->tids, stid);
1439 if (!data)
1440 return 1;
1441
1442 ctx = (struct listen_ctx *)data;
1443 lsk = ctx->lsk;
1444
1445 if (unlikely(tid_out_of_range(cdev->tids, tid))) {
1446 pr_info("passive open TID %u too large\n", tid);
1447 return 1;
1448 }
1449
1450 BLOG_SKB_CB(skb)->cdev = cdev;
1451 process_cpl_msg(chtls_pass_accept_request, lsk, skb);
1452 return 0;
1453 }
1454
1455 /*
1456 * Completes some final bits of initialization for just established connections
1457 * and changes their state to TCP_ESTABLISHED.
1458 *
1459 * snd_isn here is the ISN after the SYN, i.e., the true ISN + 1.
1460 */
make_established(struct sock * sk,u32 snd_isn,unsigned int opt)1461 static void make_established(struct sock *sk, u32 snd_isn, unsigned int opt)
1462 {
1463 struct tcp_sock *tp = tcp_sk(sk);
1464
1465 tp->pushed_seq = snd_isn;
1466 tp->write_seq = snd_isn;
1467 tp->snd_nxt = snd_isn;
1468 tp->snd_una = snd_isn;
1469 atomic_set(&inet_sk(sk)->inet_id, get_random_u16());
1470 assign_rxopt(sk, opt);
1471
1472 if (tp->rcv_wnd > (RCV_BUFSIZ_M << 10))
1473 tp->rcv_wup -= tp->rcv_wnd - (RCV_BUFSIZ_M << 10);
1474
1475 smp_mb();
1476 tcp_set_state(sk, TCP_ESTABLISHED);
1477 }
1478
chtls_abort_conn(struct sock * sk,struct sk_buff * skb)1479 static void chtls_abort_conn(struct sock *sk, struct sk_buff *skb)
1480 {
1481 struct sk_buff *abort_skb;
1482
1483 abort_skb = alloc_skb(sizeof(struct cpl_abort_req), GFP_ATOMIC);
1484 if (abort_skb)
1485 chtls_send_reset(sk, CPL_ABORT_SEND_RST, abort_skb);
1486 }
1487
1488 static struct sock *reap_list;
1489 static DEFINE_SPINLOCK(reap_list_lock);
1490
1491 /*
1492 * Process the reap list.
1493 */
DECLARE_TASK_FUNC(process_reap_list,task_param)1494 DECLARE_TASK_FUNC(process_reap_list, task_param)
1495 {
1496 spin_lock_bh(&reap_list_lock);
1497 while (reap_list) {
1498 struct sock *sk = reap_list;
1499 struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
1500
1501 reap_list = csk->passive_reap_next;
1502 csk->passive_reap_next = NULL;
1503 spin_unlock(&reap_list_lock);
1504 sock_hold(sk);
1505
1506 bh_lock_sock(sk);
1507 chtls_abort_conn(sk, NULL);
1508 sock_orphan(sk);
1509 if (sk->sk_state == TCP_CLOSE)
1510 inet_csk_destroy_sock(sk);
1511 bh_unlock_sock(sk);
1512 sock_put(sk);
1513 spin_lock(&reap_list_lock);
1514 }
1515 spin_unlock_bh(&reap_list_lock);
1516 }
1517
1518 static DECLARE_WORK(reap_task, process_reap_list);
1519
add_to_reap_list(struct sock * sk)1520 static void add_to_reap_list(struct sock *sk)
1521 {
1522 struct chtls_sock *csk = sk->sk_user_data;
1523
1524 local_bh_disable();
1525 release_tcp_port(sk); /* release the port immediately */
1526
1527 spin_lock(&reap_list_lock);
1528 csk->passive_reap_next = reap_list;
1529 reap_list = sk;
1530 if (!csk->passive_reap_next)
1531 schedule_work(&reap_task);
1532 spin_unlock(&reap_list_lock);
1533 local_bh_enable();
1534 }
1535
add_pass_open_to_parent(struct sock * child,struct sock * lsk,struct chtls_dev * cdev)1536 static void add_pass_open_to_parent(struct sock *child, struct sock *lsk,
1537 struct chtls_dev *cdev)
1538 {
1539 struct request_sock *oreq;
1540 struct chtls_sock *csk;
1541
1542 if (lsk->sk_state != TCP_LISTEN)
1543 return;
1544
1545 csk = child->sk_user_data;
1546 oreq = csk->passive_reap_next;
1547 csk->passive_reap_next = NULL;
1548
1549 reqsk_queue_removed(&inet_csk(lsk)->icsk_accept_queue, oreq);
1550 __skb_unlink((struct sk_buff *)&csk->synq, &csk->listen_ctx->synq);
1551
1552 if (sk_acceptq_is_full(lsk)) {
1553 chtls_reqsk_free(oreq);
1554 add_to_reap_list(child);
1555 } else {
1556 refcount_set(&oreq->rsk_refcnt, 1);
1557 inet_csk_reqsk_queue_add(lsk, oreq, child);
1558 lsk->sk_data_ready(lsk);
1559 }
1560 }
1561
bl_add_pass_open_to_parent(struct sock * lsk,struct sk_buff * skb)1562 static void bl_add_pass_open_to_parent(struct sock *lsk, struct sk_buff *skb)
1563 {
1564 struct sock *child = skb->sk;
1565
1566 skb->sk = NULL;
1567 add_pass_open_to_parent(child, lsk, BLOG_SKB_CB(skb)->cdev);
1568 kfree_skb(skb);
1569 }
1570
chtls_pass_establish(struct chtls_dev * cdev,struct sk_buff * skb)1571 static int chtls_pass_establish(struct chtls_dev *cdev, struct sk_buff *skb)
1572 {
1573 struct cpl_pass_establish *req = cplhdr(skb) + RSS_HDR;
1574 struct chtls_sock *csk;
1575 struct sock *lsk, *sk;
1576 unsigned int hwtid;
1577
1578 hwtid = GET_TID(req);
1579 sk = lookup_tid(cdev->tids, hwtid);
1580 if (!sk)
1581 return (CPL_RET_UNKNOWN_TID | CPL_RET_BUF_DONE);
1582
1583 bh_lock_sock(sk);
1584 if (unlikely(sock_owned_by_user(sk))) {
1585 kfree_skb(skb);
1586 } else {
1587 unsigned int stid;
1588 void *data;
1589
1590 csk = sk->sk_user_data;
1591 csk->wr_max_credits = 64;
1592 csk->wr_credits = 64;
1593 csk->wr_unacked = 0;
1594 make_established(sk, ntohl(req->snd_isn), ntohs(req->tcp_opt));
1595 stid = PASS_OPEN_TID_G(ntohl(req->tos_stid));
1596 sk->sk_state_change(sk);
1597 if (unlikely(sk->sk_socket))
1598 sk_wake_async(sk, 0, POLL_OUT);
1599
1600 data = lookup_stid(cdev->tids, stid);
1601 if (!data) {
1602 /* listening server close */
1603 kfree_skb(skb);
1604 goto unlock;
1605 }
1606 lsk = ((struct listen_ctx *)data)->lsk;
1607
1608 bh_lock_sock(lsk);
1609 if (unlikely(skb_queue_empty(&csk->listen_ctx->synq))) {
1610 /* removed from synq */
1611 bh_unlock_sock(lsk);
1612 kfree_skb(skb);
1613 goto unlock;
1614 }
1615
1616 if (likely(!sock_owned_by_user(lsk))) {
1617 kfree_skb(skb);
1618 add_pass_open_to_parent(sk, lsk, cdev);
1619 } else {
1620 skb->sk = sk;
1621 BLOG_SKB_CB(skb)->cdev = cdev;
1622 BLOG_SKB_CB(skb)->backlog_rcv =
1623 bl_add_pass_open_to_parent;
1624 __sk_add_backlog(lsk, skb);
1625 }
1626 bh_unlock_sock(lsk);
1627 }
1628 unlock:
1629 bh_unlock_sock(sk);
1630 return 0;
1631 }
1632
1633 /*
1634 * Handle receipt of an urgent pointer.
1635 */
handle_urg_ptr(struct sock * sk,u32 urg_seq)1636 static void handle_urg_ptr(struct sock *sk, u32 urg_seq)
1637 {
1638 struct tcp_sock *tp = tcp_sk(sk);
1639
1640 urg_seq--;
1641 if (tp->urg_data && !after(urg_seq, tp->urg_seq))
1642 return; /* duplicate pointer */
1643
1644 sk_send_sigurg(sk);
1645 if (tp->urg_seq == tp->copied_seq && tp->urg_data &&
1646 !sock_flag(sk, SOCK_URGINLINE) &&
1647 tp->copied_seq != tp->rcv_nxt) {
1648 struct sk_buff *skb = skb_peek(&sk->sk_receive_queue);
1649
1650 tp->copied_seq++;
1651 if (skb && tp->copied_seq - ULP_SKB_CB(skb)->seq >= skb->len)
1652 chtls_free_skb(sk, skb);
1653 }
1654
1655 tp->urg_data = TCP_URG_NOTYET;
1656 tp->urg_seq = urg_seq;
1657 }
1658
check_sk_callbacks(struct chtls_sock * csk)1659 static void check_sk_callbacks(struct chtls_sock *csk)
1660 {
1661 struct sock *sk = csk->sk;
1662
1663 if (unlikely(sk->sk_user_data &&
1664 !csk_flag_nochk(csk, CSK_CALLBACKS_CHKD)))
1665 csk_set_flag(csk, CSK_CALLBACKS_CHKD);
1666 }
1667
1668 /*
1669 * Handles Rx data that arrives in a state where the socket isn't accepting
1670 * new data.
1671 */
handle_excess_rx(struct sock * sk,struct sk_buff * skb)1672 static void handle_excess_rx(struct sock *sk, struct sk_buff *skb)
1673 {
1674 if (!csk_flag(sk, CSK_ABORT_SHUTDOWN))
1675 chtls_abort_conn(sk, skb);
1676
1677 kfree_skb(skb);
1678 }
1679
chtls_recv_data(struct sock * sk,struct sk_buff * skb)1680 static void chtls_recv_data(struct sock *sk, struct sk_buff *skb)
1681 {
1682 struct cpl_rx_data *hdr = cplhdr(skb) + RSS_HDR;
1683 struct chtls_sock *csk;
1684 struct tcp_sock *tp;
1685
1686 csk = rcu_dereference_sk_user_data(sk);
1687 tp = tcp_sk(sk);
1688
1689 if (unlikely(sk->sk_shutdown & RCV_SHUTDOWN)) {
1690 handle_excess_rx(sk, skb);
1691 return;
1692 }
1693
1694 ULP_SKB_CB(skb)->seq = ntohl(hdr->seq);
1695 ULP_SKB_CB(skb)->psh = hdr->psh;
1696 skb_ulp_mode(skb) = ULP_MODE_NONE;
1697
1698 skb_reset_transport_header(skb);
1699 __skb_pull(skb, sizeof(*hdr) + RSS_HDR);
1700 if (!skb->data_len)
1701 __skb_trim(skb, ntohs(hdr->len));
1702
1703 if (unlikely(hdr->urg))
1704 handle_urg_ptr(sk, tp->rcv_nxt + ntohs(hdr->urg));
1705 if (unlikely(tp->urg_data == TCP_URG_NOTYET &&
1706 tp->urg_seq - tp->rcv_nxt < skb->len))
1707 tp->urg_data = TCP_URG_VALID |
1708 skb->data[tp->urg_seq - tp->rcv_nxt];
1709
1710 if (unlikely(hdr->dack_mode != csk->delack_mode)) {
1711 csk->delack_mode = hdr->dack_mode;
1712 csk->delack_seq = tp->rcv_nxt;
1713 }
1714
1715 tcp_hdr(skb)->fin = 0;
1716 tp->rcv_nxt += skb->len;
1717
1718 __skb_queue_tail(&sk->sk_receive_queue, skb);
1719
1720 if (!sock_flag(sk, SOCK_DEAD)) {
1721 check_sk_callbacks(csk);
1722 sk->sk_data_ready(sk);
1723 }
1724 }
1725
chtls_rx_data(struct chtls_dev * cdev,struct sk_buff * skb)1726 static int chtls_rx_data(struct chtls_dev *cdev, struct sk_buff *skb)
1727 {
1728 struct cpl_rx_data *req = cplhdr(skb) + RSS_HDR;
1729 unsigned int hwtid = GET_TID(req);
1730 struct sock *sk;
1731
1732 sk = lookup_tid(cdev->tids, hwtid);
1733 if (unlikely(!sk)) {
1734 pr_err("can't find conn. for hwtid %u.\n", hwtid);
1735 return -EINVAL;
1736 }
1737 skb_dst_set(skb, NULL);
1738 process_cpl_msg(chtls_recv_data, sk, skb);
1739 return 0;
1740 }
1741
chtls_recv_pdu(struct sock * sk,struct sk_buff * skb)1742 static void chtls_recv_pdu(struct sock *sk, struct sk_buff *skb)
1743 {
1744 struct cpl_tls_data *hdr = cplhdr(skb);
1745 struct chtls_sock *csk;
1746 struct chtls_hws *tlsk;
1747 struct tcp_sock *tp;
1748
1749 csk = rcu_dereference_sk_user_data(sk);
1750 tlsk = &csk->tlshws;
1751 tp = tcp_sk(sk);
1752
1753 if (unlikely(sk->sk_shutdown & RCV_SHUTDOWN)) {
1754 handle_excess_rx(sk, skb);
1755 return;
1756 }
1757
1758 ULP_SKB_CB(skb)->seq = ntohl(hdr->seq);
1759 ULP_SKB_CB(skb)->flags = 0;
1760 skb_ulp_mode(skb) = ULP_MODE_TLS;
1761
1762 skb_reset_transport_header(skb);
1763 __skb_pull(skb, sizeof(*hdr));
1764 if (!skb->data_len)
1765 __skb_trim(skb,
1766 CPL_TLS_DATA_LENGTH_G(ntohl(hdr->length_pkd)));
1767
1768 if (unlikely(tp->urg_data == TCP_URG_NOTYET && tp->urg_seq -
1769 tp->rcv_nxt < skb->len))
1770 tp->urg_data = TCP_URG_VALID |
1771 skb->data[tp->urg_seq - tp->rcv_nxt];
1772
1773 tcp_hdr(skb)->fin = 0;
1774 tlsk->pldlen = CPL_TLS_DATA_LENGTH_G(ntohl(hdr->length_pkd));
1775 __skb_queue_tail(&tlsk->sk_recv_queue, skb);
1776 }
1777
chtls_rx_pdu(struct chtls_dev * cdev,struct sk_buff * skb)1778 static int chtls_rx_pdu(struct chtls_dev *cdev, struct sk_buff *skb)
1779 {
1780 struct cpl_tls_data *req = cplhdr(skb);
1781 unsigned int hwtid = GET_TID(req);
1782 struct sock *sk;
1783
1784 sk = lookup_tid(cdev->tids, hwtid);
1785 if (unlikely(!sk)) {
1786 pr_err("can't find conn. for hwtid %u.\n", hwtid);
1787 return -EINVAL;
1788 }
1789 skb_dst_set(skb, NULL);
1790 process_cpl_msg(chtls_recv_pdu, sk, skb);
1791 return 0;
1792 }
1793
chtls_set_hdrlen(struct sk_buff * skb,unsigned int nlen)1794 static void chtls_set_hdrlen(struct sk_buff *skb, unsigned int nlen)
1795 {
1796 struct tlsrx_cmp_hdr *tls_cmp_hdr = cplhdr(skb);
1797
1798 skb->hdr_len = ntohs((__force __be16)tls_cmp_hdr->length);
1799 tls_cmp_hdr->length = ntohs((__force __be16)nlen);
1800 }
1801
chtls_rx_hdr(struct sock * sk,struct sk_buff * skb)1802 static void chtls_rx_hdr(struct sock *sk, struct sk_buff *skb)
1803 {
1804 struct tlsrx_cmp_hdr *tls_hdr_pkt;
1805 struct cpl_rx_tls_cmp *cmp_cpl;
1806 struct sk_buff *skb_rec;
1807 struct chtls_sock *csk;
1808 struct chtls_hws *tlsk;
1809 struct tcp_sock *tp;
1810
1811 cmp_cpl = cplhdr(skb);
1812 csk = rcu_dereference_sk_user_data(sk);
1813 tlsk = &csk->tlshws;
1814 tp = tcp_sk(sk);
1815
1816 ULP_SKB_CB(skb)->seq = ntohl(cmp_cpl->seq);
1817 ULP_SKB_CB(skb)->flags = 0;
1818
1819 skb_reset_transport_header(skb);
1820 __skb_pull(skb, sizeof(*cmp_cpl));
1821 tls_hdr_pkt = (struct tlsrx_cmp_hdr *)skb->data;
1822 if (tls_hdr_pkt->res_to_mac_error & TLSRX_HDR_PKT_ERROR_M)
1823 tls_hdr_pkt->type = CONTENT_TYPE_ERROR;
1824 if (!skb->data_len)
1825 __skb_trim(skb, TLS_HEADER_LENGTH);
1826
1827 tp->rcv_nxt +=
1828 CPL_RX_TLS_CMP_PDULENGTH_G(ntohl(cmp_cpl->pdulength_length));
1829
1830 ULP_SKB_CB(skb)->flags |= ULPCB_FLAG_TLS_HDR;
1831 skb_rec = __skb_dequeue(&tlsk->sk_recv_queue);
1832 if (!skb_rec) {
1833 __skb_queue_tail(&sk->sk_receive_queue, skb);
1834 } else {
1835 chtls_set_hdrlen(skb, tlsk->pldlen);
1836 tlsk->pldlen = 0;
1837 __skb_queue_tail(&sk->sk_receive_queue, skb);
1838 __skb_queue_tail(&sk->sk_receive_queue, skb_rec);
1839 }
1840
1841 if (!sock_flag(sk, SOCK_DEAD)) {
1842 check_sk_callbacks(csk);
1843 sk->sk_data_ready(sk);
1844 }
1845 }
1846
chtls_rx_cmp(struct chtls_dev * cdev,struct sk_buff * skb)1847 static int chtls_rx_cmp(struct chtls_dev *cdev, struct sk_buff *skb)
1848 {
1849 struct cpl_rx_tls_cmp *req = cplhdr(skb);
1850 unsigned int hwtid = GET_TID(req);
1851 struct sock *sk;
1852
1853 sk = lookup_tid(cdev->tids, hwtid);
1854 if (unlikely(!sk)) {
1855 pr_err("can't find conn. for hwtid %u.\n", hwtid);
1856 return -EINVAL;
1857 }
1858 skb_dst_set(skb, NULL);
1859 process_cpl_msg(chtls_rx_hdr, sk, skb);
1860
1861 return 0;
1862 }
1863
chtls_timewait(struct sock * sk)1864 static void chtls_timewait(struct sock *sk)
1865 {
1866 struct tcp_sock *tp = tcp_sk(sk);
1867
1868 tp->rcv_nxt++;
1869 tp->rx_opt.ts_recent_stamp = ktime_get_seconds();
1870 tp->srtt_us = 0;
1871 tcp_time_wait(sk, TCP_TIME_WAIT, 0);
1872 }
1873
chtls_peer_close(struct sock * sk,struct sk_buff * skb)1874 static void chtls_peer_close(struct sock *sk, struct sk_buff *skb)
1875 {
1876 struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
1877
1878 if (csk_flag_nochk(csk, CSK_ABORT_RPL_PENDING))
1879 goto out;
1880
1881 sk->sk_shutdown |= RCV_SHUTDOWN;
1882 sock_set_flag(sk, SOCK_DONE);
1883
1884 switch (sk->sk_state) {
1885 case TCP_SYN_RECV:
1886 case TCP_ESTABLISHED:
1887 tcp_set_state(sk, TCP_CLOSE_WAIT);
1888 break;
1889 case TCP_FIN_WAIT1:
1890 tcp_set_state(sk, TCP_CLOSING);
1891 break;
1892 case TCP_FIN_WAIT2:
1893 chtls_release_resources(sk);
1894 if (csk_flag_nochk(csk, CSK_ABORT_RPL_PENDING))
1895 chtls_conn_done(sk);
1896 else
1897 chtls_timewait(sk);
1898 break;
1899 default:
1900 pr_info("cpl_peer_close in bad state %d\n", sk->sk_state);
1901 }
1902
1903 if (!sock_flag(sk, SOCK_DEAD)) {
1904 sk->sk_state_change(sk);
1905 /* Do not send POLL_HUP for half duplex close. */
1906
1907 if ((sk->sk_shutdown & SEND_SHUTDOWN) ||
1908 sk->sk_state == TCP_CLOSE)
1909 sk_wake_async(sk, SOCK_WAKE_WAITD, POLL_HUP);
1910 else
1911 sk_wake_async(sk, SOCK_WAKE_WAITD, POLL_IN);
1912 }
1913 out:
1914 kfree_skb(skb);
1915 }
1916
chtls_close_con_rpl(struct sock * sk,struct sk_buff * skb)1917 static void chtls_close_con_rpl(struct sock *sk, struct sk_buff *skb)
1918 {
1919 struct cpl_close_con_rpl *rpl = cplhdr(skb) + RSS_HDR;
1920 struct chtls_sock *csk;
1921 struct tcp_sock *tp;
1922
1923 csk = rcu_dereference_sk_user_data(sk);
1924
1925 if (csk_flag_nochk(csk, CSK_ABORT_RPL_PENDING))
1926 goto out;
1927
1928 tp = tcp_sk(sk);
1929
1930 tp->snd_una = ntohl(rpl->snd_nxt) - 1; /* exclude FIN */
1931
1932 switch (sk->sk_state) {
1933 case TCP_CLOSING:
1934 chtls_release_resources(sk);
1935 if (csk_flag_nochk(csk, CSK_ABORT_RPL_PENDING))
1936 chtls_conn_done(sk);
1937 else
1938 chtls_timewait(sk);
1939 break;
1940 case TCP_LAST_ACK:
1941 chtls_release_resources(sk);
1942 chtls_conn_done(sk);
1943 break;
1944 case TCP_FIN_WAIT1:
1945 tcp_set_state(sk, TCP_FIN_WAIT2);
1946 sk->sk_shutdown |= SEND_SHUTDOWN;
1947
1948 if (!sock_flag(sk, SOCK_DEAD))
1949 sk->sk_state_change(sk);
1950 else if (tcp_sk(sk)->linger2 < 0 &&
1951 !csk_flag_nochk(csk, CSK_ABORT_SHUTDOWN))
1952 chtls_abort_conn(sk, skb);
1953 else if (csk_flag_nochk(csk, CSK_TX_DATA_SENT))
1954 chtls_set_quiesce_ctrl(sk, 0);
1955 break;
1956 default:
1957 pr_info("close_con_rpl in bad state %d\n", sk->sk_state);
1958 }
1959 out:
1960 kfree_skb(skb);
1961 }
1962
get_cpl_skb(struct sk_buff * skb,size_t len,gfp_t gfp)1963 static struct sk_buff *get_cpl_skb(struct sk_buff *skb,
1964 size_t len, gfp_t gfp)
1965 {
1966 if (likely(!skb_is_nonlinear(skb) && !skb_cloned(skb))) {
1967 WARN_ONCE(skb->len < len, "skb alloc error");
1968 __skb_trim(skb, len);
1969 skb_get(skb);
1970 } else {
1971 skb = alloc_skb(len, gfp);
1972 if (skb)
1973 __skb_put(skb, len);
1974 }
1975 return skb;
1976 }
1977
set_abort_rpl_wr(struct sk_buff * skb,unsigned int tid,int cmd)1978 static void set_abort_rpl_wr(struct sk_buff *skb, unsigned int tid,
1979 int cmd)
1980 {
1981 struct cpl_abort_rpl *rpl = cplhdr(skb);
1982
1983 INIT_TP_WR_CPL(rpl, CPL_ABORT_RPL, tid);
1984 rpl->cmd = cmd;
1985 }
1986
send_defer_abort_rpl(struct chtls_dev * cdev,struct sk_buff * skb)1987 static void send_defer_abort_rpl(struct chtls_dev *cdev, struct sk_buff *skb)
1988 {
1989 struct cpl_abort_req_rss *req = cplhdr(skb);
1990 struct sk_buff *reply_skb;
1991
1992 reply_skb = alloc_skb(sizeof(struct cpl_abort_rpl),
1993 GFP_KERNEL | __GFP_NOFAIL);
1994 __skb_put(reply_skb, sizeof(struct cpl_abort_rpl));
1995 set_abort_rpl_wr(reply_skb, GET_TID(req),
1996 (req->status & CPL_ABORT_NO_RST));
1997 set_wr_txq(reply_skb, CPL_PRIORITY_DATA, req->status >> 1);
1998 cxgb4_ofld_send(cdev->lldi->ports[0], reply_skb);
1999 kfree_skb(skb);
2000 }
2001
2002 /*
2003 * Add an skb to the deferred skb queue for processing from process context.
2004 */
t4_defer_reply(struct sk_buff * skb,struct chtls_dev * cdev,defer_handler_t handler)2005 static void t4_defer_reply(struct sk_buff *skb, struct chtls_dev *cdev,
2006 defer_handler_t handler)
2007 {
2008 DEFERRED_SKB_CB(skb)->handler = handler;
2009 spin_lock_bh(&cdev->deferq.lock);
2010 __skb_queue_tail(&cdev->deferq, skb);
2011 if (skb_queue_len(&cdev->deferq) == 1)
2012 schedule_work(&cdev->deferq_task);
2013 spin_unlock_bh(&cdev->deferq.lock);
2014 }
2015
chtls_send_abort_rpl(struct sock * sk,struct sk_buff * skb,struct chtls_dev * cdev,int status,int queue)2016 static void chtls_send_abort_rpl(struct sock *sk, struct sk_buff *skb,
2017 struct chtls_dev *cdev,
2018 int status, int queue)
2019 {
2020 struct cpl_abort_req_rss *req = cplhdr(skb) + RSS_HDR;
2021 struct sk_buff *reply_skb;
2022 struct chtls_sock *csk;
2023 unsigned int tid;
2024
2025 csk = rcu_dereference_sk_user_data(sk);
2026 tid = GET_TID(req);
2027
2028 reply_skb = get_cpl_skb(skb, sizeof(struct cpl_abort_rpl), gfp_any());
2029 if (!reply_skb) {
2030 req->status = (queue << 1) | status;
2031 t4_defer_reply(skb, cdev, send_defer_abort_rpl);
2032 return;
2033 }
2034
2035 set_abort_rpl_wr(reply_skb, tid, status);
2036 kfree_skb(skb);
2037 set_wr_txq(reply_skb, CPL_PRIORITY_DATA, queue);
2038 if (csk_conn_inline(csk)) {
2039 struct l2t_entry *e = csk->l2t_entry;
2040
2041 if (e && sk->sk_state != TCP_SYN_RECV) {
2042 cxgb4_l2t_send(csk->egress_dev, reply_skb, e);
2043 return;
2044 }
2045 }
2046 cxgb4_ofld_send(cdev->lldi->ports[0], reply_skb);
2047 }
2048
2049 /*
2050 * This is run from a listener's backlog to abort a child connection in
2051 * SYN_RCV state (i.e., one on the listener's SYN queue).
2052 */
bl_abort_syn_rcv(struct sock * lsk,struct sk_buff * skb)2053 static void bl_abort_syn_rcv(struct sock *lsk, struct sk_buff *skb)
2054 {
2055 struct chtls_sock *csk;
2056 struct sock *child;
2057 int queue;
2058
2059 child = skb->sk;
2060 csk = rcu_dereference_sk_user_data(child);
2061 queue = csk->txq_idx;
2062
2063 skb->sk = NULL;
2064 chtls_send_abort_rpl(child, skb, BLOG_SKB_CB(skb)->cdev,
2065 CPL_ABORT_NO_RST, queue);
2066 do_abort_syn_rcv(child, lsk);
2067 }
2068
abort_syn_rcv(struct sock * sk,struct sk_buff * skb)2069 static int abort_syn_rcv(struct sock *sk, struct sk_buff *skb)
2070 {
2071 const struct request_sock *oreq;
2072 struct listen_ctx *listen_ctx;
2073 struct chtls_sock *csk;
2074 struct chtls_dev *cdev;
2075 struct sock *psk;
2076 void *ctx;
2077
2078 csk = sk->sk_user_data;
2079 oreq = csk->passive_reap_next;
2080 cdev = csk->cdev;
2081
2082 if (!oreq)
2083 return -1;
2084
2085 ctx = lookup_stid(cdev->tids, oreq->ts_recent);
2086 if (!ctx)
2087 return -1;
2088
2089 listen_ctx = (struct listen_ctx *)ctx;
2090 psk = listen_ctx->lsk;
2091
2092 bh_lock_sock(psk);
2093 if (!sock_owned_by_user(psk)) {
2094 int queue = csk->txq_idx;
2095
2096 chtls_send_abort_rpl(sk, skb, cdev, CPL_ABORT_NO_RST, queue);
2097 do_abort_syn_rcv(sk, psk);
2098 } else {
2099 skb->sk = sk;
2100 BLOG_SKB_CB(skb)->backlog_rcv = bl_abort_syn_rcv;
2101 __sk_add_backlog(psk, skb);
2102 }
2103 bh_unlock_sock(psk);
2104 return 0;
2105 }
2106
chtls_abort_req_rss(struct sock * sk,struct sk_buff * skb)2107 static void chtls_abort_req_rss(struct sock *sk, struct sk_buff *skb)
2108 {
2109 const struct cpl_abort_req_rss *req = cplhdr(skb) + RSS_HDR;
2110 struct chtls_sock *csk = sk->sk_user_data;
2111 int rst_status = CPL_ABORT_NO_RST;
2112 int queue = csk->txq_idx;
2113
2114 if (is_neg_adv(req->status)) {
2115 kfree_skb(skb);
2116 return;
2117 }
2118
2119 csk_reset_flag(csk, CSK_ABORT_REQ_RCVD);
2120
2121 if (!csk_flag_nochk(csk, CSK_ABORT_SHUTDOWN) &&
2122 !csk_flag_nochk(csk, CSK_TX_DATA_SENT)) {
2123 struct tcp_sock *tp = tcp_sk(sk);
2124
2125 if (send_tx_flowc_wr(sk, 0, tp->snd_nxt, tp->rcv_nxt) < 0)
2126 WARN_ONCE(1, "send_tx_flowc error");
2127 csk_set_flag(csk, CSK_TX_DATA_SENT);
2128 }
2129
2130 csk_set_flag(csk, CSK_ABORT_SHUTDOWN);
2131
2132 if (!csk_flag_nochk(csk, CSK_ABORT_RPL_PENDING)) {
2133 sk->sk_err = ETIMEDOUT;
2134
2135 if (!sock_flag(sk, SOCK_DEAD))
2136 sk_error_report(sk);
2137
2138 if (sk->sk_state == TCP_SYN_RECV && !abort_syn_rcv(sk, skb))
2139 return;
2140
2141 }
2142
2143 chtls_send_abort_rpl(sk, skb, BLOG_SKB_CB(skb)->cdev,
2144 rst_status, queue);
2145 chtls_release_resources(sk);
2146 chtls_conn_done(sk);
2147 }
2148
chtls_abort_rpl_rss(struct sock * sk,struct sk_buff * skb)2149 static void chtls_abort_rpl_rss(struct sock *sk, struct sk_buff *skb)
2150 {
2151 struct cpl_abort_rpl_rss *rpl = cplhdr(skb) + RSS_HDR;
2152 struct chtls_sock *csk;
2153 struct chtls_dev *cdev;
2154
2155 csk = rcu_dereference_sk_user_data(sk);
2156 cdev = csk->cdev;
2157
2158 if (csk_flag_nochk(csk, CSK_ABORT_RPL_PENDING)) {
2159 csk_reset_flag(csk, CSK_ABORT_RPL_PENDING);
2160 if (!csk_flag_nochk(csk, CSK_ABORT_REQ_RCVD)) {
2161 if (sk->sk_state == TCP_SYN_SENT) {
2162 cxgb4_remove_tid(cdev->tids,
2163 csk->port_id,
2164 GET_TID(rpl),
2165 sk->sk_family);
2166 sock_put(sk);
2167 }
2168 chtls_release_resources(sk);
2169 chtls_conn_done(sk);
2170 }
2171 }
2172 kfree_skb(skb);
2173 }
2174
chtls_conn_cpl(struct chtls_dev * cdev,struct sk_buff * skb)2175 static int chtls_conn_cpl(struct chtls_dev *cdev, struct sk_buff *skb)
2176 {
2177 struct cpl_peer_close *req = cplhdr(skb) + RSS_HDR;
2178 void (*fn)(struct sock *sk, struct sk_buff *skb);
2179 unsigned int hwtid = GET_TID(req);
2180 struct chtls_sock *csk;
2181 struct sock *sk;
2182 u8 opcode;
2183
2184 opcode = ((const struct rss_header *)cplhdr(skb))->opcode;
2185
2186 sk = lookup_tid(cdev->tids, hwtid);
2187 if (!sk)
2188 goto rel_skb;
2189
2190 csk = sk->sk_user_data;
2191
2192 switch (opcode) {
2193 case CPL_PEER_CLOSE:
2194 fn = chtls_peer_close;
2195 break;
2196 case CPL_CLOSE_CON_RPL:
2197 fn = chtls_close_con_rpl;
2198 break;
2199 case CPL_ABORT_REQ_RSS:
2200 /*
2201 * Save the offload device in the skb, we may process this
2202 * message after the socket has closed.
2203 */
2204 BLOG_SKB_CB(skb)->cdev = csk->cdev;
2205 fn = chtls_abort_req_rss;
2206 break;
2207 case CPL_ABORT_RPL_RSS:
2208 fn = chtls_abort_rpl_rss;
2209 break;
2210 default:
2211 goto rel_skb;
2212 }
2213
2214 process_cpl_msg(fn, sk, skb);
2215 return 0;
2216
2217 rel_skb:
2218 kfree_skb(skb);
2219 return 0;
2220 }
2221
chtls_rx_ack(struct sock * sk,struct sk_buff * skb)2222 static void chtls_rx_ack(struct sock *sk, struct sk_buff *skb)
2223 {
2224 struct cpl_fw4_ack *hdr = cplhdr(skb) + RSS_HDR;
2225 struct chtls_sock *csk = sk->sk_user_data;
2226 struct tcp_sock *tp = tcp_sk(sk);
2227 u32 credits = hdr->credits;
2228 u32 snd_una;
2229
2230 snd_una = ntohl(hdr->snd_una);
2231 csk->wr_credits += credits;
2232
2233 if (csk->wr_unacked > csk->wr_max_credits - csk->wr_credits)
2234 csk->wr_unacked = csk->wr_max_credits - csk->wr_credits;
2235
2236 while (credits) {
2237 struct sk_buff *pskb = csk->wr_skb_head;
2238 u32 csum;
2239
2240 if (unlikely(!pskb)) {
2241 if (csk->wr_nondata)
2242 csk->wr_nondata -= credits;
2243 break;
2244 }
2245 csum = (__force u32)pskb->csum;
2246 if (unlikely(credits < csum)) {
2247 pskb->csum = (__force __wsum)(csum - credits);
2248 break;
2249 }
2250 dequeue_wr(sk);
2251 credits -= csum;
2252 kfree_skb(pskb);
2253 }
2254 if (hdr->seq_vld & CPL_FW4_ACK_FLAGS_SEQVAL) {
2255 if (unlikely(before(snd_una, tp->snd_una))) {
2256 kfree_skb(skb);
2257 return;
2258 }
2259
2260 if (tp->snd_una != snd_una) {
2261 tp->snd_una = snd_una;
2262 tp->rcv_tstamp = tcp_jiffies32;
2263 if (tp->snd_una == tp->snd_nxt &&
2264 !csk_flag_nochk(csk, CSK_TX_FAILOVER))
2265 csk_reset_flag(csk, CSK_TX_WAIT_IDLE);
2266 }
2267 }
2268
2269 if (hdr->seq_vld & CPL_FW4_ACK_FLAGS_CH) {
2270 unsigned int fclen16 = roundup(failover_flowc_wr_len, 16);
2271
2272 csk->wr_credits -= fclen16;
2273 csk_reset_flag(csk, CSK_TX_WAIT_IDLE);
2274 csk_reset_flag(csk, CSK_TX_FAILOVER);
2275 }
2276 if (skb_queue_len(&csk->txq) && chtls_push_frames(csk, 0))
2277 sk->sk_write_space(sk);
2278
2279 kfree_skb(skb);
2280 }
2281
chtls_wr_ack(struct chtls_dev * cdev,struct sk_buff * skb)2282 static int chtls_wr_ack(struct chtls_dev *cdev, struct sk_buff *skb)
2283 {
2284 struct cpl_fw4_ack *rpl = cplhdr(skb) + RSS_HDR;
2285 unsigned int hwtid = GET_TID(rpl);
2286 struct sock *sk;
2287
2288 sk = lookup_tid(cdev->tids, hwtid);
2289 if (unlikely(!sk)) {
2290 pr_err("can't find conn. for hwtid %u.\n", hwtid);
2291 return -EINVAL;
2292 }
2293 process_cpl_msg(chtls_rx_ack, sk, skb);
2294
2295 return 0;
2296 }
2297
chtls_set_tcb_rpl(struct chtls_dev * cdev,struct sk_buff * skb)2298 static int chtls_set_tcb_rpl(struct chtls_dev *cdev, struct sk_buff *skb)
2299 {
2300 struct cpl_set_tcb_rpl *rpl = cplhdr(skb) + RSS_HDR;
2301 unsigned int hwtid = GET_TID(rpl);
2302 struct sock *sk;
2303
2304 sk = lookup_tid(cdev->tids, hwtid);
2305
2306 /* return EINVAL if socket doesn't exist */
2307 if (!sk)
2308 return -EINVAL;
2309
2310 /* Reusing the skb as size of cpl_set_tcb_field structure
2311 * is greater than cpl_abort_req
2312 */
2313 if (TCB_COOKIE_G(rpl->cookie) == TCB_FIELD_COOKIE_TFLAG)
2314 chtls_send_abort(sk, CPL_ABORT_SEND_RST, NULL);
2315
2316 kfree_skb(skb);
2317 return 0;
2318 }
2319
2320 chtls_handler_func chtls_handlers[NUM_CPL_CMDS] = {
2321 [CPL_PASS_OPEN_RPL] = chtls_pass_open_rpl,
2322 [CPL_CLOSE_LISTSRV_RPL] = chtls_close_listsrv_rpl,
2323 [CPL_PASS_ACCEPT_REQ] = chtls_pass_accept_req,
2324 [CPL_PASS_ESTABLISH] = chtls_pass_establish,
2325 [CPL_RX_DATA] = chtls_rx_data,
2326 [CPL_TLS_DATA] = chtls_rx_pdu,
2327 [CPL_RX_TLS_CMP] = chtls_rx_cmp,
2328 [CPL_PEER_CLOSE] = chtls_conn_cpl,
2329 [CPL_CLOSE_CON_RPL] = chtls_conn_cpl,
2330 [CPL_ABORT_REQ_RSS] = chtls_conn_cpl,
2331 [CPL_ABORT_RPL_RSS] = chtls_conn_cpl,
2332 [CPL_FW4_ACK] = chtls_wr_ack,
2333 [CPL_SET_TCB_RPL] = chtls_set_tcb_rpl,
2334 };
2335