1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 2018 Chelsio Communications, Inc.
5 * Written by: Atul Gupta (atul.gupta@chelsio.com)
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>
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>
23 #include <net/transp_v6.h>
24 #include <net/ip6_route.h>
25 #include <net/inet_common.h>
29 #include <net/addrconf.h>
30 #include <net/secure_seq.h>
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.
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,
58 static struct chtls_sock *chtls_sock_create(struct chtls_dev *cdev)
60 struct chtls_sock *csk = kzalloc(sizeof(*csk), GFP_ATOMIC);
65 csk->txdata_skb_cache = alloc_skb(TXDATA_SKB_LEN, GFP_ATOMIC);
66 if (!csk->txdata_skb_cache) {
71 kref_init(&csk->kref);
73 skb_queue_head_init(&csk->txq);
74 csk->wr_skb_head = NULL;
75 csk->wr_skb_tail = NULL;
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);
85 static void chtls_sock_release(struct kref *ref)
87 struct chtls_sock *csk =
88 container_of(ref, struct chtls_sock, kref);
93 static struct net_device *chtls_find_netdev(struct chtls_dev *cdev,
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;
104 switch (sk->sk_family) {
106 if (likely(!inet_sk(sk)->inet_rcv_saddr))
108 ndev = __ip_dev_find(&init_net, inet_sk(sk)->inet_rcv_saddr, false);
110 #if IS_ENABLED(CONFIG_IPV6)
112 addr_type = ipv6_addr_type(&sk->sk_v6_rcv_saddr);
113 if (likely(addr_type == IPV6_ADDR_ANY))
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)) {
132 if (is_vlan_dev(ndev))
133 ndev = vlan_dev_real_dev(ndev);
135 for_each_port(adap, i)
136 if (cdev->ports[i] == ndev)
141 static void assign_rxopt(struct sock *sk, unsigned int opt)
143 const struct chtls_dev *cdev;
144 struct chtls_sock *csk;
147 csk = rcu_dereference_sk_user_data(sk);
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);
169 static void chtls_purge_receive_queue(struct sock *sk)
173 while ((skb = __skb_dequeue(&sk->sk_receive_queue)) != NULL) {
174 skb_dst_set(skb, (void *)NULL);
179 static void chtls_purge_write_queue(struct sock *sk)
181 struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
184 while ((skb = __skb_dequeue(&csk->txq))) {
185 sk->sk_wmem_queued -= skb->truesize;
190 static void chtls_purge_recv_queue(struct sock *sk)
192 struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
193 struct chtls_hws *tlsk = &csk->tlshws;
196 while ((skb = __skb_dequeue(&tlsk->sk_recv_queue)) != NULL) {
197 skb_dst_set(skb, NULL);
202 static void abort_arp_failure(void *handle, struct sk_buff *skb)
204 struct cpl_abort_req *req = cplhdr(skb);
205 struct chtls_dev *cdev;
207 cdev = (struct chtls_dev *)handle;
208 req->cmd = CPL_ABORT_NO_RST;
209 cxgb4_ofld_send(cdev->lldi->ports[0], skb);
212 static struct sk_buff *alloc_ctrl_skb(struct sk_buff *skb, int len)
214 if (likely(skb && !skb_shared(skb) && !skb_cloned(skb))) {
216 refcount_inc(&skb->users);
218 skb = alloc_skb(len, GFP_KERNEL | __GFP_NOFAIL);
223 static void chtls_send_abort(struct sock *sk, int mode, struct sk_buff *skb)
225 struct cpl_abort_req *req;
226 struct chtls_sock *csk;
229 csk = rcu_dereference_sk_user_data(sk);
233 skb = alloc_ctrl_skb(csk->txdata_skb_cache, sizeof(*req));
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);
241 t4_set_arp_err_handler(skb, csk->cdev, abort_arp_failure);
242 send_or_defer(sk, tp, skb, mode == CPL_ABORT_SEND_RST);
245 static void chtls_send_reset(struct sock *sk, int mode, struct sk_buff *skb)
247 struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
249 if (unlikely(csk_flag_nochk(csk, CSK_ABORT_SHUTDOWN) ||
251 if (sk->sk_state == TCP_SYN_RECV)
252 csk_set_flag(csk, CSK_RST_ABORTED);
256 if (!csk_flag_nochk(csk, CSK_TX_DATA_SENT)) {
257 struct tcp_sock *tp = tcp_sk(sk);
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);
264 csk_set_flag(csk, CSK_ABORT_RPL_PENDING);
265 chtls_purge_write_queue(sk);
267 csk_set_flag(csk, CSK_ABORT_SHUTDOWN);
268 if (sk->sk_state != TCP_SYN_RECV)
269 chtls_send_abort(sk, mode, skb);
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);
280 static void release_tcp_port(struct sock *sk)
282 if (inet_csk(sk)->icsk_bind_hash)
286 static void tcp_uncork(struct sock *sk)
288 struct tcp_sock *tp = tcp_sk(sk);
290 if (tp->nonagle & TCP_NAGLE_CORK) {
291 tp->nonagle &= ~TCP_NAGLE_CORK;
292 chtls_tcp_push(sk, 0);
296 static void chtls_close_conn(struct sock *sk)
298 struct cpl_close_con_req *req;
299 struct chtls_sock *csk;
304 len = roundup(sizeof(struct cpl_close_con_req), 16);
305 csk = rcu_dereference_sk_user_data(sk);
308 skb = alloc_skb(len, GFP_KERNEL | __GFP_NOFAIL);
309 req = (struct cpl_close_con_req *)__skb_put(skb, len);
311 req->wr.wr_hi = htonl(FW_WR_OP_V(FW_TP_WR) |
312 FW_WR_IMMDLEN_V(sizeof(*req) -
314 req->wr.wr_mid = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*req), 16)) |
315 FW_WR_FLOWID_V(tid));
317 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_CLOSE_CON_REQ, tid));
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);
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.
330 static int make_close_transition(struct sock *sk)
332 int next = (int)new_state[sk->sk_state];
334 tcp_set_state(sk, next & TCP_STATE_MASK);
335 return next & TCP_ACTION_FIN;
338 void chtls_close(struct sock *sk, long timeout)
340 int data_lost, prev_state;
341 struct chtls_sock *csk;
343 csk = rcu_dereference_sk_user_data(sk);
346 sk->sk_shutdown |= SHUTDOWN_MASK;
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);
353 if (sk->sk_state == TCP_CLOSE) {
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);
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);
366 sk_stream_wait_close(sk, timeout);
369 prev_state = sk->sk_state;
378 if (prev_state != TCP_CLOSE && sk->sk_state == TCP_CLOSE)
381 if (sk->sk_state == TCP_FIN_WAIT2 && tcp_sk(sk)->linger2 < 0 &&
382 !csk_flag(sk, CSK_ABORT_SHUTDOWN)) {
385 skb = alloc_skb(sizeof(struct cpl_abort_req), GFP_ATOMIC);
387 chtls_send_reset(sk, CPL_ABORT_SEND_RST, skb);
390 if (sk->sk_state == TCP_CLOSE)
391 inet_csk_destroy_sock(sk);
400 * Wait until a socket enters on of the given states.
402 static int wait_for_states(struct sock *sk, unsigned int states)
404 DECLARE_WAITQUEUE(wait, current);
405 struct socket_wq _sk_wq;
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.
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);
422 add_wait_queue(sk_sleep(sk), &wait);
423 while (!sk_in_state(sk, states)) {
424 if (!current_timeo) {
428 if (signal_pending(current)) {
429 err = sock_intr_errno(current_timeo);
432 set_current_state(TASK_UNINTERRUPTIBLE);
434 if (!sk_in_state(sk, states))
435 current_timeo = schedule_timeout(current_timeo);
436 __set_current_state(TASK_RUNNING);
439 remove_wait_queue(sk_sleep(sk), &wait);
441 if (rcu_dereference(sk->sk_wq) == &_sk_wq)
446 int chtls_disconnect(struct sock *sk, int flags)
452 chtls_purge_recv_queue(sk);
453 chtls_purge_receive_queue(sk);
454 chtls_purge_write_queue(sk);
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);
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);
469 #define SHUTDOWN_ELIGIBLE_STATE (TCPF_ESTABLISHED | \
470 TCPF_SYN_RECV | TCPF_CLOSE_WAIT)
471 void chtls_shutdown(struct sock *sk, int how)
473 if ((how & SEND_SHUTDOWN) &&
474 sk_in_state(sk, SHUTDOWN_ELIGIBLE_STATE) &&
475 make_close_transition(sk))
476 chtls_close_conn(sk);
479 void chtls_destroy_sock(struct sock *sk)
481 struct chtls_sock *csk;
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);
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)
493 sk->sk_prot = &tcpv6_prot;
495 sk->sk_prot->destroy(sk);
498 static void reset_listen_child(struct sock *child)
500 struct chtls_sock *csk = rcu_dereference_sk_user_data(child);
503 skb = alloc_ctrl_skb(csk->txdata_skb_cache,
504 sizeof(struct cpl_abort_req));
506 chtls_send_reset(child, CPL_ABORT_SEND_RST, skb);
508 INC_ORPHAN_COUNT(child);
509 if (child->sk_state == TCP_CLOSE)
510 inet_csk_destroy_sock(child);
513 static void chtls_disconnect_acceptq(struct sock *listen_sk)
515 struct request_sock **pprev;
517 pprev = ACCEPT_QUEUE(listen_sk);
519 struct request_sock *req = *pprev;
521 if (req->rsk_ops == &chtls_rsk_ops ||
522 req->rsk_ops == &chtls_rsk_opsv6) {
523 struct sock *child = req->sk;
525 *pprev = req->dl_next;
526 sk_acceptq_removed(listen_sk);
531 release_tcp_port(child);
532 reset_listen_child(child);
533 bh_unlock_sock(child);
537 pprev = &req->dl_next;
542 static int listen_hashfn(const struct sock *sk)
544 return ((unsigned long)sk >> 10) & (LISTEN_INFO_HASH_SIZE - 1);
547 static struct listen_info *listen_hash_add(struct chtls_dev *cdev,
551 struct listen_info *p = kmalloc(sizeof(*p), GFP_KERNEL);
554 int key = listen_hashfn(sk);
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);
566 static int listen_hash_find(struct chtls_dev *cdev,
569 struct listen_info *p;
573 key = listen_hashfn(sk);
575 spin_lock(&cdev->listen_lock);
576 for (p = cdev->listen_hash_tab[key]; p; p = p->next)
581 spin_unlock(&cdev->listen_lock);
585 static int listen_hash_del(struct chtls_dev *cdev,
588 struct listen_info *p, **prev;
592 key = listen_hashfn(sk);
593 prev = &cdev->listen_hash_tab[key];
595 spin_lock(&cdev->listen_lock);
596 for (p = *prev; p; prev = &p->next, p = p->next)
603 spin_unlock(&cdev->listen_lock);
607 static void cleanup_syn_rcv_conn(struct sock *child, struct sock *parent)
609 struct request_sock *req;
610 struct chtls_sock *csk;
612 csk = rcu_dereference_sk_user_data(child);
613 req = csk->passive_reap_next;
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;
621 static void chtls_reset_synq(struct listen_ctx *listen_ctx)
623 struct sock *listen_sk = listen_ctx->lsk;
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;
631 cleanup_syn_rcv_conn(child, listen_sk);
635 release_tcp_port(child);
636 reset_listen_child(child);
637 bh_unlock_sock(child);
643 int chtls_listen_start(struct chtls_dev *cdev, struct sock *sk)
645 struct net_device *ndev;
646 #if IS_ENABLED(CONFIG_IPV6)
647 bool clip_valid = false;
649 struct listen_ctx *ctx;
650 struct adapter *adap;
651 struct port_info *pi;
656 ndev = chtls_find_netdev(cdev, sk);
661 pi = netdev_priv(ndev);
663 if (!(adap->flags & CXGB4_FULL_INIT_DONE))
666 if (listen_hash_find(cdev, sk) >= 0) /* already have it */
669 ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
673 __module_get(THIS_MODULE);
676 ctx->state = T4_LISTEN_START_PENDING;
677 skb_queue_head_init(&ctx->synq);
679 stid = cxgb4_alloc_stid(cdev->tids, sk->sk_family, ctx);
684 if (!listen_hash_add(cdev, sk, stid))
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)
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);
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]);
711 ret = net_xmit_errno(ret);
716 #if IS_ENABLED(CONFIG_IPV6)
718 cxgb4_clip_release(ndev, (const u32 *)&sk->sk_v6_rcv_saddr, 1);
720 listen_hash_del(cdev, sk);
722 cxgb4_free_stid(cdev->tids, stid, sk->sk_family);
726 module_put(THIS_MODULE);
730 void chtls_listen_stop(struct chtls_dev *cdev, struct sock *sk)
732 struct listen_ctx *listen_ctx;
735 stid = listen_hash_del(cdev, sk);
739 listen_ctx = (struct listen_ctx *)lookup_stid(cdev->tids, stid);
740 chtls_reset_synq(listen_ctx);
742 cxgb4_remove_server(cdev->lldi->ports[0], stid,
743 cdev->lldi->rxq_ids[0], sk->sk_family == PF_INET6);
745 #if IS_ENABLED(CONFIG_IPV6)
746 if (sk->sk_family == PF_INET6) {
747 struct net_device *ndev = chtls_find_netdev(cdev, sk);
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);
757 chtls_disconnect_acceptq(sk);
760 static int chtls_pass_open_rpl(struct chtls_dev *cdev, struct sk_buff *skb)
762 struct cpl_pass_open_rpl *rpl = cplhdr(skb) + RSS_HDR;
763 unsigned int stid = GET_TID(rpl);
764 struct listen_ctx *listen_ctx;
766 listen_ctx = (struct listen_ctx *)lookup_stid(cdev->tids, stid);
768 return CPL_RET_BUF_DONE;
770 if (listen_ctx->state == T4_LISTEN_START_PENDING) {
771 listen_ctx->state = T4_LISTEN_STARTED;
772 return CPL_RET_BUF_DONE;
775 if (rpl->status != CPL_ERR_NONE) {
776 pr_info("Unexpected PASS_OPEN_RPL status %u for STID %u\n",
779 cxgb4_free_stid(cdev->tids, stid, listen_ctx->lsk->sk_family);
780 sock_put(listen_ctx->lsk);
782 module_put(THIS_MODULE);
784 return CPL_RET_BUF_DONE;
787 static int chtls_close_listsrv_rpl(struct chtls_dev *cdev, struct sk_buff *skb)
789 struct cpl_close_listsvr_rpl *rpl = cplhdr(skb) + RSS_HDR;
790 struct listen_ctx *listen_ctx;
795 data = lookup_stid(cdev->tids, stid);
796 listen_ctx = (struct listen_ctx *)data;
798 if (rpl->status != CPL_ERR_NONE) {
799 pr_info("Unexpected CLOSE_LISTSRV_RPL status %u for STID %u\n",
802 cxgb4_free_stid(cdev->tids, stid, listen_ctx->lsk->sk_family);
803 sock_put(listen_ctx->lsk);
805 module_put(THIS_MODULE);
807 return CPL_RET_BUF_DONE;
810 static void chtls_purge_wr_queue(struct sock *sk)
814 while ((skb = dequeue_wr(sk)) != NULL)
818 static void chtls_release_resources(struct sock *sk)
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;
829 kfree_skb(csk->txdata_skb_cache);
830 csk->txdata_skb_cache = NULL;
832 if (csk->wr_credits != csk->wr_max_credits) {
833 chtls_purge_wr_queue(sk);
834 chtls_reset_wr_list(csk);
837 if (csk->l2t_entry) {
838 cxgb4_l2t_release(csk->l2t_entry);
839 csk->l2t_entry = NULL;
842 if (sk->sk_state != TCP_SYN_SENT) {
843 cxgb4_remove_tid(tids, csk->port_id, tid, sk->sk_family);
848 static void chtls_conn_done(struct sock *sk)
850 if (sock_flag(sk, SOCK_DEAD))
851 chtls_purge_receive_queue(sk);
852 sk_wakeup_sleepers(sk, 0);
856 static void do_abort_syn_rcv(struct sock *child, struct sock *parent)
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.
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.
873 INC_ORPHAN_COUNT(child);
874 chtls_release_resources(child);
875 chtls_conn_done(child);
877 if (csk_flag(child, CSK_RST_ABORTED)) {
878 chtls_release_resources(child);
879 chtls_conn_done(child);
884 static void pass_open_abort(struct sock *child, struct sock *parent,
887 do_abort_syn_rcv(child, parent);
891 static void bl_pass_open_abort(struct sock *lsk, struct sk_buff *skb)
893 pass_open_abort(skb->sk, lsk, skb);
896 static void chtls_pass_open_arp_failure(struct sock *sk,
899 const struct request_sock *oreq;
900 struct chtls_sock *csk;
901 struct chtls_dev *cdev;
905 csk = rcu_dereference_sk_user_data(sk);
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
913 if (csk_flag(sk, CSK_ABORT_RPL_PENDING)) {
918 oreq = csk->passive_reap_next;
919 data = lookup_stid(cdev->tids, oreq->ts_recent);
920 parent = ((struct listen_ctx *)data)->lsk;
922 bh_lock_sock(parent);
923 if (!sock_owned_by_user(parent)) {
924 pass_open_abort(sk, parent, skb);
926 BLOG_SKB_CB(skb)->backlog_rcv = bl_pass_open_abort;
927 __sk_add_backlog(parent, skb);
929 bh_unlock_sock(parent);
932 static void chtls_accept_rpl_arp_failure(void *handle,
935 struct sock *sk = (struct sock *)handle;
938 process_cpl_msg(chtls_pass_open_arp_failure, sk, skb);
942 static unsigned int chtls_select_mss(const struct chtls_sock *csk,
944 struct cpl_pass_accept_req *req)
946 struct chtls_dev *cdev;
947 struct dst_entry *dst;
948 unsigned int tcpoptsz;
949 unsigned int iphdrsz;
950 unsigned int mtu_idx;
955 mss = ntohs(req->tcpopt.mss);
957 dst = __sk_dst_get(sk);
962 #if IS_ENABLED(CONFIG_IPV6)
963 if (sk->sk_family == AF_INET6)
964 iphdrsz = sizeof(struct ipv6hdr) + sizeof(struct tcphdr);
967 iphdrsz = sizeof(struct iphdr) + sizeof(struct tcphdr);
968 if (req->tcpopt.tstamp)
969 tcpoptsz += round_up(TCPOLEN_TIMESTAMP, 4);
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)
979 tp->advmss = cxgb4_best_aligned_mtu(cdev->lldi->mtus,
981 tp->advmss - tcpoptsz,
983 tp->advmss -= iphdrsz;
985 inet_csk(sk)->icsk_pmtu_cookie = pmtu;
989 static unsigned int select_rcv_wscale(int space, int wscale_ok, int win_clamp)
993 if (space > MAX_RCV_WND)
995 if (win_clamp && win_clamp < space)
999 while (wscale < 14 && (65535 << wscale) < space)
1005 static void chtls_pass_accept_rpl(struct sk_buff *skb,
1006 struct cpl_pass_accept_req *req,
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;
1022 csk = sk->sk_user_data;
1024 lldi = csk->cdev->lldi;
1025 len = roundup(sizeof(*rpl5), 16);
1027 rpl5 = __skb_put_zero(skb, len);
1028 INIT_TP_WR(rpl5, tid);
1030 OPCODE_TID(rpl5) = cpu_to_be32(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL,
1032 csk->mtu_idx = chtls_select_mss(csk, dst_mtu(__sk_dst_get(sk)),
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));
1045 opt2 = RX_CHANNEL_V(0) |
1046 RSS_QUEUE_VALID_F | RSS_QUEUE_V(csk->rss_qid);
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)
1054 hlen = ntohl(req->hdr_len);
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);
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);
1072 static void inet_inherit_port(struct sock *lsk, struct sock *newsk)
1075 __inet_inherit_port(lsk, newsk);
1079 static int chtls_backlog_rcv(struct sock *sk, struct sk_buff *skb)
1081 if (skb->protocol) {
1085 BLOG_SKB_CB(skb)->backlog_rcv(sk, skb);
1089 static void chtls_set_tcp_window(struct chtls_sock *csk)
1091 struct net_device *ndev = csk->egress_dev;
1092 struct port_info *pi = netdev_priv(ndev);
1093 unsigned int linkspeed;
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;
1101 csk->rcv_win *= scale;
1102 #define CHTLS_10G_SNDWIN (256 * 1024)
1103 csk->snd_win = CHTLS_10G_SNDWIN;
1105 csk->snd_win *= scale;
1108 static struct sock *chtls_recv_sock(struct sock *lsk,
1109 struct request_sock *oreq,
1111 const struct cpl_pass_accept_req *req,
1112 struct chtls_dev *cdev)
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;
1129 iph = (const struct iphdr *)network_hdr;
1130 newsk = tcp_create_openreq_child(lsk, oreq, cdev->askb);
1134 if (lsk->sk_family == AF_INET) {
1135 dst = inet_csk_route_child_sock(lsk, newsk, oreq);
1139 n = dst_neigh_lookup(dst, &iph->saddr);
1140 #if IS_ENABLED(CONFIG_IPV6)
1142 const struct ipv6hdr *ip6h;
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);
1156 n = dst_neigh_lookup(dst, &ip6h->saddr);
1163 if (is_vlan_dev(ndev))
1164 ndev = vlan_dev_real_dev(ndev);
1166 for_each_port(adap, i)
1167 if (cdev->ports[i] == ndev)
1173 port_id = cxgb4_port_idx(ndev);
1175 csk = chtls_sock_create(cdev);
1179 csk->l2t_entry = cxgb4_l2t_get(cdev->lldi->l2t, n, ndev, 0);
1180 if (!csk->l2t_entry)
1183 newsk->sk_user_data = csk;
1184 newsk->sk_backlog_rcv = chtls_backlog_rcv;
1187 newinet = inet_sk(newsk);
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)
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);
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;
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;
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 :
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),
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 */
1248 chtls_sock_release(&csk->kref);
1254 inet_csk_prepare_forced_close(newsk);
1257 chtls_reqsk_free(oreq);
1262 * Populate a TID_RELEASE WR. The skb must be already propely sized.
1264 static void mk_tid_release(struct sk_buff *skb,
1265 unsigned int chan, unsigned int tid)
1267 struct cpl_tid_release *req;
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);
1277 static int chtls_get_module(struct sock *sk)
1279 struct inet_connection_sock *icsk = inet_csk(sk);
1281 if (!try_module_get(icsk->icsk_ulp_ops->owner))
1287 static void chtls_pass_accept_request(struct sock *sk,
1288 struct sk_buff *skb)
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;
1308 __u8 ip_dsfield; /* IPv4 tos or IPv6 dsfield */
1312 req = cplhdr(skb) + RSS_HDR;
1314 cdev = BLOG_SKB_CB(skb)->cdev;
1315 newsk = lookup_tid(cdev->tids, tid);
1316 stid = PASS_OPEN_TID_G(ntohl(req->tos_stid));
1318 pr_info("tid (%d) already in use\n", tid);
1322 len = roundup(sizeof(*rpl), 16);
1323 reply_skb = alloc_skb(len, GFP_ATOMIC);
1325 cxgb4_remove_tid(cdev->tids, 0, tid, sk->sk_family);
1330 if (sk->sk_state != TCP_LISTEN)
1333 if (inet_csk_reqsk_queue_is_full(sk))
1336 if (sk_acceptq_is_full(sk))
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);
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);
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);
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);
1366 oreq->rsk_rcv_wnd = 0;
1367 oreq->rsk_window_clamp = 0;
1368 oreq->syncookie = 0;
1370 oreq->ts_recent = 0;
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)
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));
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;
1390 inet_rsk(oreq)->ir_iif = sk->sk_bound_dev_if;
1391 th_ecn = tcph->ece && tcph->cwr;
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;
1399 newsk = chtls_recv_sock(sk, oreq, network_hdr, req, cdev);
1403 if (chtls_get_module(newsk))
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);
1418 mk_tid_release(reply_skb, 0, tid);
1419 cxgb4_ofld_send(cdev->lldi->ports[0], reply_skb);
1424 * Handle a CPL_PASS_ACCEPT_REQ message.
1426 static int chtls_pass_accept_req(struct chtls_dev *cdev, struct sk_buff *skb)
1428 struct cpl_pass_accept_req *req = cplhdr(skb) + RSS_HDR;
1429 struct listen_ctx *ctx;
1435 stid = PASS_OPEN_TID_G(ntohl(req->tos_stid));
1438 data = lookup_stid(cdev->tids, stid);
1442 ctx = (struct listen_ctx *)data;
1445 if (unlikely(tid_out_of_range(cdev->tids, tid))) {
1446 pr_info("passive open TID %u too large\n", tid);
1450 BLOG_SKB_CB(skb)->cdev = cdev;
1451 process_cpl_msg(chtls_pass_accept_request, lsk, skb);
1456 * Completes some final bits of initialization for just established connections
1457 * and changes their state to TCP_ESTABLISHED.
1459 * snd_isn here is the ISN after the SYN, i.e., the true ISN + 1.
1461 static void make_established(struct sock *sk, u32 snd_isn, unsigned int opt)
1463 struct tcp_sock *tp = tcp_sk(sk);
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 inet_sk(sk)->inet_id = get_random_u16();
1470 assign_rxopt(sk, opt);
1472 if (tp->rcv_wnd > (RCV_BUFSIZ_M << 10))
1473 tp->rcv_wup -= tp->rcv_wnd - (RCV_BUFSIZ_M << 10);
1476 tcp_set_state(sk, TCP_ESTABLISHED);
1479 static void chtls_abort_conn(struct sock *sk, struct sk_buff *skb)
1481 struct sk_buff *abort_skb;
1483 abort_skb = alloc_skb(sizeof(struct cpl_abort_req), GFP_ATOMIC);
1485 chtls_send_reset(sk, CPL_ABORT_SEND_RST, abort_skb);
1488 static struct sock *reap_list;
1489 static DEFINE_SPINLOCK(reap_list_lock);
1492 * Process the reap list.
1494 DECLARE_TASK_FUNC(process_reap_list, task_param)
1496 spin_lock_bh(&reap_list_lock);
1498 struct sock *sk = reap_list;
1499 struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
1501 reap_list = csk->passive_reap_next;
1502 csk->passive_reap_next = NULL;
1503 spin_unlock(&reap_list_lock);
1507 chtls_abort_conn(sk, NULL);
1509 if (sk->sk_state == TCP_CLOSE)
1510 inet_csk_destroy_sock(sk);
1513 spin_lock(&reap_list_lock);
1515 spin_unlock_bh(&reap_list_lock);
1518 static DECLARE_WORK(reap_task, process_reap_list);
1520 static void add_to_reap_list(struct sock *sk)
1522 struct chtls_sock *csk = sk->sk_user_data;
1525 release_tcp_port(sk); /* release the port immediately */
1527 spin_lock(&reap_list_lock);
1528 csk->passive_reap_next = reap_list;
1530 if (!csk->passive_reap_next)
1531 schedule_work(&reap_task);
1532 spin_unlock(&reap_list_lock);
1536 static void add_pass_open_to_parent(struct sock *child, struct sock *lsk,
1537 struct chtls_dev *cdev)
1539 struct request_sock *oreq;
1540 struct chtls_sock *csk;
1542 if (lsk->sk_state != TCP_LISTEN)
1545 csk = child->sk_user_data;
1546 oreq = csk->passive_reap_next;
1547 csk->passive_reap_next = NULL;
1549 reqsk_queue_removed(&inet_csk(lsk)->icsk_accept_queue, oreq);
1550 __skb_unlink((struct sk_buff *)&csk->synq, &csk->listen_ctx->synq);
1552 if (sk_acceptq_is_full(lsk)) {
1553 chtls_reqsk_free(oreq);
1554 add_to_reap_list(child);
1556 refcount_set(&oreq->rsk_refcnt, 1);
1557 inet_csk_reqsk_queue_add(lsk, oreq, child);
1558 lsk->sk_data_ready(lsk);
1562 static void bl_add_pass_open_to_parent(struct sock *lsk, struct sk_buff *skb)
1564 struct sock *child = skb->sk;
1567 add_pass_open_to_parent(child, lsk, BLOG_SKB_CB(skb)->cdev);
1571 static int chtls_pass_establish(struct chtls_dev *cdev, struct sk_buff *skb)
1573 struct cpl_pass_establish *req = cplhdr(skb) + RSS_HDR;
1574 struct chtls_sock *csk;
1575 struct sock *lsk, *sk;
1578 hwtid = GET_TID(req);
1579 sk = lookup_tid(cdev->tids, hwtid);
1581 return (CPL_RET_UNKNOWN_TID | CPL_RET_BUF_DONE);
1584 if (unlikely(sock_owned_by_user(sk))) {
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);
1600 data = lookup_stid(cdev->tids, stid);
1602 /* listening server close */
1606 lsk = ((struct listen_ctx *)data)->lsk;
1609 if (unlikely(skb_queue_empty(&csk->listen_ctx->synq))) {
1610 /* removed from synq */
1611 bh_unlock_sock(lsk);
1616 if (likely(!sock_owned_by_user(lsk))) {
1618 add_pass_open_to_parent(sk, lsk, cdev);
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);
1626 bh_unlock_sock(lsk);
1634 * Handle receipt of an urgent pointer.
1636 static void handle_urg_ptr(struct sock *sk, u32 urg_seq)
1638 struct tcp_sock *tp = tcp_sk(sk);
1641 if (tp->urg_data && !after(urg_seq, tp->urg_seq))
1642 return; /* duplicate pointer */
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);
1651 if (skb && tp->copied_seq - ULP_SKB_CB(skb)->seq >= skb->len)
1652 chtls_free_skb(sk, skb);
1655 tp->urg_data = TCP_URG_NOTYET;
1656 tp->urg_seq = urg_seq;
1659 static void check_sk_callbacks(struct chtls_sock *csk)
1661 struct sock *sk = csk->sk;
1663 if (unlikely(sk->sk_user_data &&
1664 !csk_flag_nochk(csk, CSK_CALLBACKS_CHKD)))
1665 csk_set_flag(csk, CSK_CALLBACKS_CHKD);
1669 * Handles Rx data that arrives in a state where the socket isn't accepting
1672 static void handle_excess_rx(struct sock *sk, struct sk_buff *skb)
1674 if (!csk_flag(sk, CSK_ABORT_SHUTDOWN))
1675 chtls_abort_conn(sk, skb);
1680 static void chtls_recv_data(struct sock *sk, struct sk_buff *skb)
1682 struct cpl_rx_data *hdr = cplhdr(skb) + RSS_HDR;
1683 struct chtls_sock *csk;
1684 struct tcp_sock *tp;
1686 csk = rcu_dereference_sk_user_data(sk);
1689 if (unlikely(sk->sk_shutdown & RCV_SHUTDOWN)) {
1690 handle_excess_rx(sk, skb);
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;
1698 skb_reset_transport_header(skb);
1699 __skb_pull(skb, sizeof(*hdr) + RSS_HDR);
1701 __skb_trim(skb, ntohs(hdr->len));
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];
1710 if (unlikely(hdr->dack_mode != csk->delack_mode)) {
1711 csk->delack_mode = hdr->dack_mode;
1712 csk->delack_seq = tp->rcv_nxt;
1715 tcp_hdr(skb)->fin = 0;
1716 tp->rcv_nxt += skb->len;
1718 __skb_queue_tail(&sk->sk_receive_queue, skb);
1720 if (!sock_flag(sk, SOCK_DEAD)) {
1721 check_sk_callbacks(csk);
1722 sk->sk_data_ready(sk);
1726 static int chtls_rx_data(struct chtls_dev *cdev, struct sk_buff *skb)
1728 struct cpl_rx_data *req = cplhdr(skb) + RSS_HDR;
1729 unsigned int hwtid = GET_TID(req);
1732 sk = lookup_tid(cdev->tids, hwtid);
1733 if (unlikely(!sk)) {
1734 pr_err("can't find conn. for hwtid %u.\n", hwtid);
1737 skb_dst_set(skb, NULL);
1738 process_cpl_msg(chtls_recv_data, sk, skb);
1742 static void chtls_recv_pdu(struct sock *sk, struct sk_buff *skb)
1744 struct cpl_tls_data *hdr = cplhdr(skb);
1745 struct chtls_sock *csk;
1746 struct chtls_hws *tlsk;
1747 struct tcp_sock *tp;
1749 csk = rcu_dereference_sk_user_data(sk);
1750 tlsk = &csk->tlshws;
1753 if (unlikely(sk->sk_shutdown & RCV_SHUTDOWN)) {
1754 handle_excess_rx(sk, skb);
1758 ULP_SKB_CB(skb)->seq = ntohl(hdr->seq);
1759 ULP_SKB_CB(skb)->flags = 0;
1760 skb_ulp_mode(skb) = ULP_MODE_TLS;
1762 skb_reset_transport_header(skb);
1763 __skb_pull(skb, sizeof(*hdr));
1766 CPL_TLS_DATA_LENGTH_G(ntohl(hdr->length_pkd)));
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];
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);
1778 static int chtls_rx_pdu(struct chtls_dev *cdev, struct sk_buff *skb)
1780 struct cpl_tls_data *req = cplhdr(skb);
1781 unsigned int hwtid = GET_TID(req);
1784 sk = lookup_tid(cdev->tids, hwtid);
1785 if (unlikely(!sk)) {
1786 pr_err("can't find conn. for hwtid %u.\n", hwtid);
1789 skb_dst_set(skb, NULL);
1790 process_cpl_msg(chtls_recv_pdu, sk, skb);
1794 static void chtls_set_hdrlen(struct sk_buff *skb, unsigned int nlen)
1796 struct tlsrx_cmp_hdr *tls_cmp_hdr = cplhdr(skb);
1798 skb->hdr_len = ntohs((__force __be16)tls_cmp_hdr->length);
1799 tls_cmp_hdr->length = ntohs((__force __be16)nlen);
1802 static void chtls_rx_hdr(struct sock *sk, struct sk_buff *skb)
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;
1811 cmp_cpl = cplhdr(skb);
1812 csk = rcu_dereference_sk_user_data(sk);
1813 tlsk = &csk->tlshws;
1816 ULP_SKB_CB(skb)->seq = ntohl(cmp_cpl->seq);
1817 ULP_SKB_CB(skb)->flags = 0;
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;
1825 __skb_trim(skb, TLS_HEADER_LENGTH);
1828 CPL_RX_TLS_CMP_PDULENGTH_G(ntohl(cmp_cpl->pdulength_length));
1830 ULP_SKB_CB(skb)->flags |= ULPCB_FLAG_TLS_HDR;
1831 skb_rec = __skb_dequeue(&tlsk->sk_recv_queue);
1833 __skb_queue_tail(&sk->sk_receive_queue, skb);
1835 chtls_set_hdrlen(skb, tlsk->pldlen);
1837 __skb_queue_tail(&sk->sk_receive_queue, skb);
1838 __skb_queue_tail(&sk->sk_receive_queue, skb_rec);
1841 if (!sock_flag(sk, SOCK_DEAD)) {
1842 check_sk_callbacks(csk);
1843 sk->sk_data_ready(sk);
1847 static int chtls_rx_cmp(struct chtls_dev *cdev, struct sk_buff *skb)
1849 struct cpl_rx_tls_cmp *req = cplhdr(skb);
1850 unsigned int hwtid = GET_TID(req);
1853 sk = lookup_tid(cdev->tids, hwtid);
1854 if (unlikely(!sk)) {
1855 pr_err("can't find conn. for hwtid %u.\n", hwtid);
1858 skb_dst_set(skb, NULL);
1859 process_cpl_msg(chtls_rx_hdr, sk, skb);
1864 static void chtls_timewait(struct sock *sk)
1866 struct tcp_sock *tp = tcp_sk(sk);
1869 tp->rx_opt.ts_recent_stamp = ktime_get_seconds();
1871 tcp_time_wait(sk, TCP_TIME_WAIT, 0);
1874 static void chtls_peer_close(struct sock *sk, struct sk_buff *skb)
1876 struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
1878 if (csk_flag_nochk(csk, CSK_ABORT_RPL_PENDING))
1881 sk->sk_shutdown |= RCV_SHUTDOWN;
1882 sock_set_flag(sk, SOCK_DONE);
1884 switch (sk->sk_state) {
1886 case TCP_ESTABLISHED:
1887 tcp_set_state(sk, TCP_CLOSE_WAIT);
1890 tcp_set_state(sk, TCP_CLOSING);
1893 chtls_release_resources(sk);
1894 if (csk_flag_nochk(csk, CSK_ABORT_RPL_PENDING))
1895 chtls_conn_done(sk);
1900 pr_info("cpl_peer_close in bad state %d\n", sk->sk_state);
1903 if (!sock_flag(sk, SOCK_DEAD)) {
1904 sk->sk_state_change(sk);
1905 /* Do not send POLL_HUP for half duplex close. */
1907 if ((sk->sk_shutdown & SEND_SHUTDOWN) ||
1908 sk->sk_state == TCP_CLOSE)
1909 sk_wake_async(sk, SOCK_WAKE_WAITD, POLL_HUP);
1911 sk_wake_async(sk, SOCK_WAKE_WAITD, POLL_IN);
1917 static void chtls_close_con_rpl(struct sock *sk, struct sk_buff *skb)
1919 struct cpl_close_con_rpl *rpl = cplhdr(skb) + RSS_HDR;
1920 struct chtls_sock *csk;
1921 struct tcp_sock *tp;
1923 csk = rcu_dereference_sk_user_data(sk);
1925 if (csk_flag_nochk(csk, CSK_ABORT_RPL_PENDING))
1930 tp->snd_una = ntohl(rpl->snd_nxt) - 1; /* exclude FIN */
1932 switch (sk->sk_state) {
1934 chtls_release_resources(sk);
1935 if (csk_flag_nochk(csk, CSK_ABORT_RPL_PENDING))
1936 chtls_conn_done(sk);
1941 chtls_release_resources(sk);
1942 chtls_conn_done(sk);
1945 tcp_set_state(sk, TCP_FIN_WAIT2);
1946 sk->sk_shutdown |= SEND_SHUTDOWN;
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);
1957 pr_info("close_con_rpl in bad state %d\n", sk->sk_state);
1963 static struct sk_buff *get_cpl_skb(struct sk_buff *skb,
1964 size_t len, gfp_t gfp)
1966 if (likely(!skb_is_nonlinear(skb) && !skb_cloned(skb))) {
1967 WARN_ONCE(skb->len < len, "skb alloc error");
1968 __skb_trim(skb, len);
1971 skb = alloc_skb(len, gfp);
1973 __skb_put(skb, len);
1978 static void set_abort_rpl_wr(struct sk_buff *skb, unsigned int tid,
1981 struct cpl_abort_rpl *rpl = cplhdr(skb);
1983 INIT_TP_WR_CPL(rpl, CPL_ABORT_RPL, tid);
1987 static void send_defer_abort_rpl(struct chtls_dev *cdev, struct sk_buff *skb)
1989 struct cpl_abort_req_rss *req = cplhdr(skb);
1990 struct sk_buff *reply_skb;
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);
2003 * Add an skb to the deferred skb queue for processing from process context.
2005 static void t4_defer_reply(struct sk_buff *skb, struct chtls_dev *cdev,
2006 defer_handler_t handler)
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);
2016 static void chtls_send_abort_rpl(struct sock *sk, struct sk_buff *skb,
2017 struct chtls_dev *cdev,
2018 int status, int queue)
2020 struct cpl_abort_req_rss *req = cplhdr(skb) + RSS_HDR;
2021 struct sk_buff *reply_skb;
2022 struct chtls_sock *csk;
2025 csk = rcu_dereference_sk_user_data(sk);
2028 reply_skb = get_cpl_skb(skb, sizeof(struct cpl_abort_rpl), gfp_any());
2030 req->status = (queue << 1) | status;
2031 t4_defer_reply(skb, cdev, send_defer_abort_rpl);
2035 set_abort_rpl_wr(reply_skb, tid, status);
2037 set_wr_txq(reply_skb, CPL_PRIORITY_DATA, queue);
2038 if (csk_conn_inline(csk)) {
2039 struct l2t_entry *e = csk->l2t_entry;
2041 if (e && sk->sk_state != TCP_SYN_RECV) {
2042 cxgb4_l2t_send(csk->egress_dev, reply_skb, e);
2046 cxgb4_ofld_send(cdev->lldi->ports[0], reply_skb);
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).
2053 static void bl_abort_syn_rcv(struct sock *lsk, struct sk_buff *skb)
2055 struct chtls_sock *csk;
2060 csk = rcu_dereference_sk_user_data(child);
2061 queue = csk->txq_idx;
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);
2069 static int abort_syn_rcv(struct sock *sk, struct sk_buff *skb)
2071 const struct request_sock *oreq;
2072 struct listen_ctx *listen_ctx;
2073 struct chtls_sock *csk;
2074 struct chtls_dev *cdev;
2078 csk = sk->sk_user_data;
2079 oreq = csk->passive_reap_next;
2085 ctx = lookup_stid(cdev->tids, oreq->ts_recent);
2089 listen_ctx = (struct listen_ctx *)ctx;
2090 psk = listen_ctx->lsk;
2093 if (!sock_owned_by_user(psk)) {
2094 int queue = csk->txq_idx;
2096 chtls_send_abort_rpl(sk, skb, cdev, CPL_ABORT_NO_RST, queue);
2097 do_abort_syn_rcv(sk, psk);
2100 BLOG_SKB_CB(skb)->backlog_rcv = bl_abort_syn_rcv;
2101 __sk_add_backlog(psk, skb);
2103 bh_unlock_sock(psk);
2107 static void chtls_abort_req_rss(struct sock *sk, struct sk_buff *skb)
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;
2114 if (is_neg_adv(req->status)) {
2119 csk_reset_flag(csk, CSK_ABORT_REQ_RCVD);
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);
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);
2130 csk_set_flag(csk, CSK_ABORT_SHUTDOWN);
2132 if (!csk_flag_nochk(csk, CSK_ABORT_RPL_PENDING)) {
2133 sk->sk_err = ETIMEDOUT;
2135 if (!sock_flag(sk, SOCK_DEAD))
2136 sk_error_report(sk);
2138 if (sk->sk_state == TCP_SYN_RECV && !abort_syn_rcv(sk, skb))
2143 chtls_send_abort_rpl(sk, skb, BLOG_SKB_CB(skb)->cdev,
2145 chtls_release_resources(sk);
2146 chtls_conn_done(sk);
2149 static void chtls_abort_rpl_rss(struct sock *sk, struct sk_buff *skb)
2151 struct cpl_abort_rpl_rss *rpl = cplhdr(skb) + RSS_HDR;
2152 struct chtls_sock *csk;
2153 struct chtls_dev *cdev;
2155 csk = rcu_dereference_sk_user_data(sk);
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,
2168 chtls_release_resources(sk);
2169 chtls_conn_done(sk);
2175 static int chtls_conn_cpl(struct chtls_dev *cdev, struct sk_buff *skb)
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;
2184 opcode = ((const struct rss_header *)cplhdr(skb))->opcode;
2186 sk = lookup_tid(cdev->tids, hwtid);
2190 csk = sk->sk_user_data;
2193 case CPL_PEER_CLOSE:
2194 fn = chtls_peer_close;
2196 case CPL_CLOSE_CON_RPL:
2197 fn = chtls_close_con_rpl;
2199 case CPL_ABORT_REQ_RSS:
2201 * Save the offload device in the skb, we may process this
2202 * message after the socket has closed.
2204 BLOG_SKB_CB(skb)->cdev = csk->cdev;
2205 fn = chtls_abort_req_rss;
2207 case CPL_ABORT_RPL_RSS:
2208 fn = chtls_abort_rpl_rss;
2214 process_cpl_msg(fn, sk, skb);
2222 static void chtls_rx_ack(struct sock *sk, struct sk_buff *skb)
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;
2230 snd_una = ntohl(hdr->snd_una);
2231 csk->wr_credits += credits;
2233 if (csk->wr_unacked > csk->wr_max_credits - csk->wr_credits)
2234 csk->wr_unacked = csk->wr_max_credits - csk->wr_credits;
2237 struct sk_buff *pskb = csk->wr_skb_head;
2240 if (unlikely(!pskb)) {
2241 if (csk->wr_nondata)
2242 csk->wr_nondata -= credits;
2245 csum = (__force u32)pskb->csum;
2246 if (unlikely(credits < csum)) {
2247 pskb->csum = (__force __wsum)(csum - credits);
2254 if (hdr->seq_vld & CPL_FW4_ACK_FLAGS_SEQVAL) {
2255 if (unlikely(before(snd_una, tp->snd_una))) {
2260 if (tp->snd_una != snd_una) {
2261 tp->snd_una = snd_una;
2262 tp->rcv_tstamp = tcp_time_stamp(tp);
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);
2269 if (hdr->seq_vld & CPL_FW4_ACK_FLAGS_CH) {
2270 unsigned int fclen16 = roundup(failover_flowc_wr_len, 16);
2272 csk->wr_credits -= fclen16;
2273 csk_reset_flag(csk, CSK_TX_WAIT_IDLE);
2274 csk_reset_flag(csk, CSK_TX_FAILOVER);
2276 if (skb_queue_len(&csk->txq) && chtls_push_frames(csk, 0))
2277 sk->sk_write_space(sk);
2282 static int chtls_wr_ack(struct chtls_dev *cdev, struct sk_buff *skb)
2284 struct cpl_fw4_ack *rpl = cplhdr(skb) + RSS_HDR;
2285 unsigned int hwtid = GET_TID(rpl);
2288 sk = lookup_tid(cdev->tids, hwtid);
2289 if (unlikely(!sk)) {
2290 pr_err("can't find conn. for hwtid %u.\n", hwtid);
2293 process_cpl_msg(chtls_rx_ack, sk, skb);
2298 static int chtls_set_tcb_rpl(struct chtls_dev *cdev, struct sk_buff *skb)
2300 struct cpl_set_tcb_rpl *rpl = cplhdr(skb) + RSS_HDR;
2301 unsigned int hwtid = GET_TID(rpl);
2304 sk = lookup_tid(cdev->tids, hwtid);
2306 /* return EINVAL if socket doesn't exist */
2310 /* Reusing the skb as size of cpl_set_tcb_field structure
2311 * is greater than cpl_abort_req
2313 if (TCB_COOKIE_G(rpl->cookie) == TCB_FIELD_COOKIE_TFLAG)
2314 chtls_send_abort(sk, CPL_ABORT_SEND_RST, NULL);
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,