Lines Matching full:smc
3 * Shared Memory Communications over RDMA (SMC-R) and RoCE
19 #define KMSG_COMPONENT "smc"
34 #include <net/smc.h>
41 #include "smc.h"
86 sock_net(skb->sk)->smc.limit_smc_hs)) in smc_nl_dump_hs_limitation()
100 sock_net(skb->sk)->smc.limit_smc_hs = true; in smc_nl_enable_hs_limitation()
106 sock_net(skb->sk)->smc.limit_smc_hs = false; in smc_nl_disable_hs_limitation()
112 struct smc_sock *smc = smc_sk(sk); in smc_set_keepalive() local
114 smc->clcsock->sk->sk_prot->keepalive(smc->clcsock->sk, val); in smc_set_keepalive()
124 struct smc_sock *smc; in smc_tcp_syn_recv_sock() local
127 smc = smc_clcsock_user_data(sk); in smc_tcp_syn_recv_sock()
129 if (READ_ONCE(sk->sk_ack_backlog) + atomic_read(&smc->queued_smc_hs) > in smc_tcp_syn_recv_sock()
133 if (sk_acceptq_is_full(&smc->sk)) { in smc_tcp_syn_recv_sock()
139 child = smc->ori_af_ops->syn_recv_sock(sk, skb, req, dst, req_unhash, in smc_tcp_syn_recv_sock()
141 /* child must not inherit smc or its ops */ in smc_tcp_syn_recv_sock()
147 inet_csk(child)->icsk_af_ops = smc->ori_af_ops; in smc_tcp_syn_recv_sock()
159 const struct smc_sock *smc; in smc_hs_congested() local
161 smc = smc_clcsock_user_data(sk); in smc_hs_congested()
163 if (!smc) in smc_hs_congested()
213 struct smc_sock *smc = smc_sk(sk); in smc_release_cb() local
215 if (smc->conn.tx_in_release_sock) { in smc_release_cb()
216 smc_tx_pending(&smc->conn); in smc_release_cb()
217 smc->conn.tx_in_release_sock = false; in smc_release_cb()
222 .name = "SMC",
247 static void smc_fback_restore_callbacks(struct smc_sock *smc) in smc_fback_restore_callbacks() argument
249 struct sock *clcsk = smc->clcsock->sk; in smc_fback_restore_callbacks()
254 smc_clcsock_restore_cb(&clcsk->sk_state_change, &smc->clcsk_state_change); in smc_fback_restore_callbacks()
255 smc_clcsock_restore_cb(&clcsk->sk_data_ready, &smc->clcsk_data_ready); in smc_fback_restore_callbacks()
256 smc_clcsock_restore_cb(&clcsk->sk_write_space, &smc->clcsk_write_space); in smc_fback_restore_callbacks()
257 smc_clcsock_restore_cb(&clcsk->sk_error_report, &smc->clcsk_error_report); in smc_fback_restore_callbacks()
262 static void smc_restore_fallback_changes(struct smc_sock *smc) in smc_restore_fallback_changes() argument
264 if (smc->clcsock->file) { /* non-accepted sockets have no file yet */ in smc_restore_fallback_changes()
265 smc->clcsock->file->private_data = smc->sk.sk_socket; in smc_restore_fallback_changes()
266 smc->clcsock->file = NULL; in smc_restore_fallback_changes()
267 smc_fback_restore_callbacks(smc); in smc_restore_fallback_changes()
271 static int __smc_release(struct smc_sock *smc) in __smc_release() argument
273 struct sock *sk = &smc->sk; in __smc_release()
276 if (!smc->use_fallback) { in __smc_release()
277 rc = smc_close_active(smc); in __smc_release()
287 rc = kernel_sock_shutdown(smc->clcsock, in __smc_release()
293 smc_restore_fallback_changes(smc); in __smc_release()
299 if (smc->clcsock) { in __smc_release()
301 smc_clcsock_release(smc); in __smc_release()
304 if (!smc->use_fallback) in __smc_release()
305 smc_conn_free(&smc->conn); in __smc_release()
314 struct smc_sock *smc; in smc_release() local
321 smc = smc_sk(sk); in smc_release()
326 if (smc->connect_nonblock && old_state == SMC_INIT) in smc_release()
327 tcp_abort(smc->clcsock->sk, ECONNABORTED); in smc_release()
329 if (cancel_work_sync(&smc->connect_work)) in smc_release()
330 sock_put(&smc->sk); /* sock_hold in smc_connect for passive closing */ in smc_release()
341 !smc->use_fallback) in smc_release()
342 smc_close_active_abort(smc); in smc_release()
344 rc = __smc_release(smc); in smc_release()
368 struct smc_sock *smc; in smc_sock_alloc() local
381 WRITE_ONCE(sk->sk_sndbuf, 2 * READ_ONCE(net->smc.sysctl_wmem)); in smc_sock_alloc()
382 WRITE_ONCE(sk->sk_rcvbuf, 2 * READ_ONCE(net->smc.sysctl_rmem)); in smc_sock_alloc()
383 smc = smc_sk(sk); in smc_sock_alloc()
384 INIT_WORK(&smc->tcp_listen_work, smc_tcp_listen_work); in smc_sock_alloc()
385 INIT_WORK(&smc->connect_work, smc_connect_work); in smc_sock_alloc()
386 INIT_DELAYED_WORK(&smc->conn.tx_work, smc_tx_work); in smc_sock_alloc()
387 INIT_LIST_HEAD(&smc->accept_q); in smc_sock_alloc()
388 spin_lock_init(&smc->accept_q_lock); in smc_sock_alloc()
389 spin_lock_init(&smc->conn.send_lock); in smc_sock_alloc()
391 mutex_init(&smc->clcsock_release_lock); in smc_sock_alloc()
392 smc_init_saved_callbacks(smc); in smc_sock_alloc()
402 struct smc_sock *smc; in smc_bind() local
405 smc = smc_sk(sk); in smc_bind()
426 if (sk->sk_state != SMC_INIT || smc->connect_nonblock) in smc_bind()
429 smc->clcsock->sk->sk_reuse = sk->sk_reuse; in smc_bind()
430 smc->clcsock->sk->sk_reuseport = sk->sk_reuseport; in smc_bind()
431 rc = kernel_bind(smc->clcsock, uaddr, addr_len); in smc_bind()
439 /* copy only relevant settings and flags of SOL_SOCKET level from smc to
440 * clc socket (since smc is not called for these options from net/core)
459 /* if set, use value set by setsockopt() - else use IPv4 or SMC sysctl value */
474 2 * READ_ONCE(nnet->smc.sysctl_wmem)); in smc_adjust_sock_bufsizes()
484 2 * READ_ONCE(nnet->smc.sysctl_rmem)); in smc_adjust_sock_bufsizes()
507 static void smc_copy_sock_settings_to_clc(struct smc_sock *smc) in smc_copy_sock_settings_to_clc() argument
509 smc_copy_sock_settings(smc->clcsock->sk, &smc->sk, SK_FLAGS_SMC_TO_CLC); in smc_copy_sock_settings_to_clc()
516 /* copy only settings and flags relevant for smc from clc to smc socket */
517 static void smc_copy_sock_settings_to_smc(struct smc_sock *smc) in smc_copy_sock_settings_to_smc() argument
519 smc_copy_sock_settings(&smc->sk, smc->clcsock->sk, SK_FLAGS_CLC_TO_SMC); in smc_copy_sock_settings_to_smc()
595 static int smcr_clnt_conf_first_link(struct smc_sock *smc) in smcr_clnt_conf_first_link() argument
597 struct smc_link *link = smc->conn.lnk; in smcr_clnt_conf_first_link()
611 rc = smc_clc_wait_msg(smc, &dclc, sizeof(dclc), in smcr_clnt_conf_first_link()
628 if (smc->conn.sndbuf_desc->is_vm) { in smcr_clnt_conf_first_link()
629 if (smcr_link_reg_buf(link, smc->conn.sndbuf_desc)) in smcr_clnt_conf_first_link()
634 if (smcr_link_reg_buf(link, smc->conn.rmb_desc)) in smcr_clnt_conf_first_link()
638 smc->conn.rmb_desc->is_conf_rkey = true; in smcr_clnt_conf_first_link()
655 rc = smc_clc_wait_msg(smc, &dclc, sizeof(dclc), in smcr_clnt_conf_first_link()
677 static void smc_conn_save_peer_info_fce(struct smc_sock *smc, in smc_conn_save_peer_info_fce() argument
689 if (smc->conn.lgr->is_smcd) { in smc_conn_save_peer_info_fce()
690 memcpy(smc->conn.lgr->negotiated_eid, clc_v2->d1.eid, in smc_conn_save_peer_info_fce()
695 memcpy(smc->conn.lgr->negotiated_eid, clc_v2->r1.eid, in smc_conn_save_peer_info_fce()
701 smc->conn.lgr->peer_os = fce->os_type; in smc_conn_save_peer_info_fce()
702 smc->conn.lgr->peer_smc_release = fce->release; in smc_conn_save_peer_info_fce()
704 memcpy(smc->conn.lgr->peer_hostname, fce->hostname, in smc_conn_save_peer_info_fce()
708 static void smcr_conn_save_peer_info(struct smc_sock *smc, in smcr_conn_save_peer_info() argument
713 smc->conn.peer_rmbe_idx = clc->r0.rmbe_idx; in smcr_conn_save_peer_info()
714 smc->conn.local_tx_ctrl.token = ntohl(clc->r0.rmbe_alert_token); in smcr_conn_save_peer_info()
715 smc->conn.peer_rmbe_size = bufsize; in smcr_conn_save_peer_info()
716 atomic_set(&smc->conn.peer_rmbe_space, smc->conn.peer_rmbe_size); in smcr_conn_save_peer_info()
717 smc->conn.tx_off = bufsize * (smc->conn.peer_rmbe_idx - 1); in smcr_conn_save_peer_info()
720 static void smcd_conn_save_peer_info(struct smc_sock *smc, in smcd_conn_save_peer_info() argument
725 smc->conn.peer_rmbe_idx = clc->d0.dmbe_idx; in smcd_conn_save_peer_info()
726 smc->conn.peer_token = ntohll(clc->d0.token); in smcd_conn_save_peer_info()
728 smc->conn.peer_rmbe_size = bufsize - sizeof(struct smcd_cdc_msg); in smcd_conn_save_peer_info()
729 atomic_set(&smc->conn.peer_rmbe_space, smc->conn.peer_rmbe_size); in smcd_conn_save_peer_info()
730 smc->conn.tx_off = bufsize * smc->conn.peer_rmbe_idx; in smcd_conn_save_peer_info()
733 static void smc_conn_save_peer_info(struct smc_sock *smc, in smc_conn_save_peer_info() argument
736 if (smc->conn.lgr->is_smcd) in smc_conn_save_peer_info()
737 smcd_conn_save_peer_info(smc, clc); in smc_conn_save_peer_info()
739 smcr_conn_save_peer_info(smc, clc); in smc_conn_save_peer_info()
740 smc_conn_save_peer_info_fce(smc, clc); in smc_conn_save_peer_info()
754 static void smc_stat_inc_fback_rsn_cnt(struct smc_sock *smc, in smc_stat_inc_fback_rsn_cnt() argument
760 if (fback_arr[cnt].fback_code == smc->fallback_rsn) { in smc_stat_inc_fback_rsn_cnt()
765 fback_arr[cnt].fback_code = smc->fallback_rsn; in smc_stat_inc_fback_rsn_cnt()
772 static void smc_stat_fallback(struct smc_sock *smc) in smc_stat_fallback() argument
774 struct net *net = sock_net(&smc->sk); in smc_stat_fallback()
776 mutex_lock(&net->smc.mutex_fback_rsn); in smc_stat_fallback()
777 if (smc->listen_smc) { in smc_stat_fallback()
778 smc_stat_inc_fback_rsn_cnt(smc, net->smc.fback_rsn->srv); in smc_stat_fallback()
779 net->smc.fback_rsn->srv_fback_cnt++; in smc_stat_fallback()
781 smc_stat_inc_fback_rsn_cnt(smc, net->smc.fback_rsn->clnt); in smc_stat_fallback()
782 net->smc.fback_rsn->clnt_fback_cnt++; in smc_stat_fallback()
784 mutex_unlock(&net->smc.mutex_fback_rsn); in smc_stat_fallback()
788 static void smc_fback_wakeup_waitqueue(struct smc_sock *smc, void *key) in smc_fback_wakeup_waitqueue() argument
793 wq = rcu_dereference(smc->sk.sk_wq); in smc_fback_wakeup_waitqueue()
797 /* wake up smc sk->sk_wq */ in smc_fback_wakeup_waitqueue()
823 static void smc_fback_forward_wakeup(struct smc_sock *smc, struct sock *clcsk, in smc_fback_forward_wakeup() argument
840 smc_fback_wakeup_waitqueue(smc, mark.key); in smc_fback_forward_wakeup()
847 struct smc_sock *smc; in smc_fback_state_change() local
850 smc = smc_clcsock_user_data(clcsk); in smc_fback_state_change()
851 if (smc) in smc_fback_state_change()
852 smc_fback_forward_wakeup(smc, clcsk, in smc_fback_state_change()
853 smc->clcsk_state_change); in smc_fback_state_change()
859 struct smc_sock *smc; in smc_fback_data_ready() local
862 smc = smc_clcsock_user_data(clcsk); in smc_fback_data_ready()
863 if (smc) in smc_fback_data_ready()
864 smc_fback_forward_wakeup(smc, clcsk, in smc_fback_data_ready()
865 smc->clcsk_data_ready); in smc_fback_data_ready()
871 struct smc_sock *smc; in smc_fback_write_space() local
874 smc = smc_clcsock_user_data(clcsk); in smc_fback_write_space()
875 if (smc) in smc_fback_write_space()
876 smc_fback_forward_wakeup(smc, clcsk, in smc_fback_write_space()
877 smc->clcsk_write_space); in smc_fback_write_space()
883 struct smc_sock *smc; in smc_fback_error_report() local
886 smc = smc_clcsock_user_data(clcsk); in smc_fback_error_report()
887 if (smc) in smc_fback_error_report()
888 smc_fback_forward_wakeup(smc, clcsk, in smc_fback_error_report()
889 smc->clcsk_error_report); in smc_fback_error_report()
893 static void smc_fback_replace_callbacks(struct smc_sock *smc) in smc_fback_replace_callbacks() argument
895 struct sock *clcsk = smc->clcsock->sk; in smc_fback_replace_callbacks()
898 clcsk->sk_user_data = (void *)((uintptr_t)smc | SK_USER_DATA_NOCOPY); in smc_fback_replace_callbacks()
901 &smc->clcsk_state_change); in smc_fback_replace_callbacks()
903 &smc->clcsk_data_ready); in smc_fback_replace_callbacks()
905 &smc->clcsk_write_space); in smc_fback_replace_callbacks()
907 &smc->clcsk_error_report); in smc_fback_replace_callbacks()
912 static int smc_switch_to_fallback(struct smc_sock *smc, int reason_code) in smc_switch_to_fallback() argument
916 mutex_lock(&smc->clcsock_release_lock); in smc_switch_to_fallback()
917 if (!smc->clcsock) { in smc_switch_to_fallback()
922 smc->use_fallback = true; in smc_switch_to_fallback()
923 smc->fallback_rsn = reason_code; in smc_switch_to_fallback()
924 smc_stat_fallback(smc); in smc_switch_to_fallback()
925 trace_smc_switch_to_fallback(smc, reason_code); in smc_switch_to_fallback()
926 if (smc->sk.sk_socket && smc->sk.sk_socket->file) { in smc_switch_to_fallback()
927 smc->clcsock->file = smc->sk.sk_socket->file; in smc_switch_to_fallback()
928 smc->clcsock->file->private_data = smc->clcsock; in smc_switch_to_fallback()
929 smc->clcsock->wq.fasync_list = in smc_switch_to_fallback()
930 smc->sk.sk_socket->wq.fasync_list; in smc_switch_to_fallback()
933 * in smc sk->sk_wq and they should be woken up in smc_switch_to_fallback()
936 smc_fback_replace_callbacks(smc); in smc_switch_to_fallback()
939 mutex_unlock(&smc->clcsock_release_lock); in smc_switch_to_fallback()
944 static int smc_connect_fallback(struct smc_sock *smc, int reason_code) in smc_connect_fallback() argument
946 struct net *net = sock_net(&smc->sk); in smc_connect_fallback()
949 rc = smc_switch_to_fallback(smc, reason_code); in smc_connect_fallback()
951 this_cpu_inc(net->smc.smc_stats->clnt_hshake_err_cnt); in smc_connect_fallback()
952 if (smc->sk.sk_state == SMC_INIT) in smc_connect_fallback()
953 sock_put(&smc->sk); /* passive closing */ in smc_connect_fallback()
956 smc_copy_sock_settings_to_clc(smc); in smc_connect_fallback()
957 smc->connect_nonblock = 0; in smc_connect_fallback()
958 if (smc->sk.sk_state == SMC_INIT) in smc_connect_fallback()
959 smc->sk.sk_state = SMC_ACTIVE; in smc_connect_fallback()
964 static int smc_connect_decline_fallback(struct smc_sock *smc, int reason_code, in smc_connect_decline_fallback() argument
967 struct net *net = sock_net(&smc->sk); in smc_connect_decline_fallback()
971 this_cpu_inc(net->smc.smc_stats->clnt_hshake_err_cnt); in smc_connect_decline_fallback()
972 if (smc->sk.sk_state == SMC_INIT) in smc_connect_decline_fallback()
973 sock_put(&smc->sk); /* passive closing */ in smc_connect_decline_fallback()
977 rc = smc_clc_send_decline(smc, reason_code, version); in smc_connect_decline_fallback()
979 this_cpu_inc(net->smc.smc_stats->clnt_hshake_err_cnt); in smc_connect_decline_fallback()
980 if (smc->sk.sk_state == SMC_INIT) in smc_connect_decline_fallback()
981 sock_put(&smc->sk); /* passive closing */ in smc_connect_decline_fallback()
985 return smc_connect_fallback(smc, reason_code); in smc_connect_decline_fallback()
988 static void smc_conn_abort(struct smc_sock *smc, int local_first) in smc_conn_abort() argument
990 struct smc_connection *conn = &smc->conn; in smc_conn_abort()
1004 static int smc_find_rdma_device(struct smc_sock *smc, struct smc_init_info *ini) in smc_find_rdma_device() argument
1010 smc_pnet_find_roce_resource(smc->clcsock->sk, ini); in smc_find_rdma_device()
1020 static int smc_find_ism_device(struct smc_sock *smc, struct smc_init_info *ini) in smc_find_ism_device() argument
1023 smc_pnet_find_ism_resource(smc->clcsock->sk, ini); in smc_find_ism_device()
1046 static int smc_find_ism_v2_device_clnt(struct smc_sock *smc, in smc_find_ism_v2_device_clnt() argument
1064 smc_pnet_is_ndev_pnetid(sock_net(&smc->sk), smcd->pnetid)) { in smc_find_ism_v2_device_clnt()
1083 static int smc_connect_ism_vlan_setup(struct smc_sock *smc, in smc_connect_ism_vlan_setup() argument
1091 static int smc_find_proposal_devices(struct smc_sock *smc, in smc_find_proposal_devices() argument
1098 smc_find_ism_device(smc, ini) || in smc_find_proposal_devices()
1099 smc_connect_ism_vlan_setup(smc, ini)) in smc_find_proposal_devices()
1105 smc_find_rdma_device(smc, ini)) in smc_find_proposal_devices()
1115 smc_find_ism_v2_device_clnt(smc, ini)) in smc_find_proposal_devices()
1120 ini->smcrv2.saddr = smc->clcsock->sk->sk_rcv_saddr; in smc_find_proposal_devices()
1122 smc->clcsock->sk->sk_family != AF_INET || in smc_find_proposal_devices()
1124 smc_find_rdma_device(smc, ini)) in smc_find_proposal_devices()
1141 static int smc_connect_ism_vlan_cleanup(struct smc_sock *smc, in smc_connect_ism_vlan_cleanup() argument
1157 static int smc_connect_clc(struct smc_sock *smc, in smc_connect_clc() argument
1164 rc = smc_clc_send_proposal(smc, ini); in smc_connect_clc()
1167 /* receive SMC Accept CLC message */ in smc_connect_clc()
1168 return smc_clc_wait_msg(smc, aclc2, SMC_CLC_MAX_ACCEPT_LEN, in smc_connect_clc()
1200 static int smc_connect_rdma_v2_prepare(struct smc_sock *smc, in smc_connect_rdma_v2_prepare() argument
1208 struct net *net = sock_net(&smc->sk); in smc_connect_rdma_v2_prepare()
1218 if (smc_ib_find_route(net, smc->clcsock->sk->sk_rcv_saddr, in smc_connect_rdma_v2_prepare()
1238 static int smc_connect_rdma(struct smc_sock *smc, in smc_connect_rdma() argument
1255 reason_code = smc_connect_rdma_v2_prepare(smc, aclc, ini); in smc_connect_rdma()
1260 reason_code = smc_conn_create(smc, ini); in smc_connect_rdma()
1266 smc_conn_save_peer_info(smc, aclc); in smc_connect_rdma()
1269 link = smc->conn.lnk; in smc_connect_rdma()
1274 struct smc_link *l = &smc->conn.lgr->lnk[i]; in smc_connect_rdma()
1290 smc_switch_link_and_count(&smc->conn, link); in smc_connect_rdma()
1294 if (smc_buf_create(smc, false)) { in smc_connect_rdma()
1302 if (smc_rmb_rtoken_handling(&smc->conn, link, aclc)) { in smc_connect_rdma()
1307 smc_close_init(smc); in smc_connect_rdma()
1308 smc_rx_init(smc); in smc_connect_rdma()
1317 if (smc->conn.sndbuf_desc->is_vm) { in smc_connect_rdma()
1318 if (smcr_lgr_reg_sndbufs(link, smc->conn.sndbuf_desc)) { in smc_connect_rdma()
1323 if (smcr_lgr_reg_rmbs(link, smc->conn.rmb_desc)) { in smc_connect_rdma()
1339 reason_code = smc_clc_send_confirm(smc, ini->first_contact_local, in smc_connect_rdma()
1344 smc_tx_init(smc); in smc_connect_rdma()
1349 reason_code = smcr_clnt_conf_first_link(smc); in smc_connect_rdma()
1356 smc_copy_sock_settings_to_clc(smc); in smc_connect_rdma()
1357 smc->connect_nonblock = 0; in smc_connect_rdma()
1358 if (smc->sk.sk_state == SMC_INIT) in smc_connect_rdma()
1359 smc->sk.sk_state = SMC_ACTIVE; in smc_connect_rdma()
1363 smc_conn_abort(smc, ini->first_contact_local); in smc_connect_rdma()
1365 smc->connect_nonblock = 0; in smc_connect_rdma()
1390 static int smc_connect_ism(struct smc_sock *smc, in smc_connect_ism() argument
1420 /* there is only one lgr role for SMC-D; use server lock */ in smc_connect_ism()
1422 rc = smc_conn_create(smc, ini); in smc_connect_ism()
1429 rc = smc_buf_create(smc, true); in smc_connect_ism()
1435 smc_conn_save_peer_info(smc, aclc); in smc_connect_ism()
1436 smc_close_init(smc); in smc_connect_ism()
1437 smc_rx_init(smc); in smc_connect_ism()
1438 smc_tx_init(smc); in smc_connect_ism()
1447 rc = smc_clc_send_confirm(smc, ini->first_contact_local, in smc_connect_ism()
1453 smc_copy_sock_settings_to_clc(smc); in smc_connect_ism()
1454 smc->connect_nonblock = 0; in smc_connect_ism()
1455 if (smc->sk.sk_state == SMC_INIT) in smc_connect_ism()
1456 smc->sk.sk_state = SMC_ACTIVE; in smc_connect_ism()
1460 smc_conn_abort(smc, ini->first_contact_local); in smc_connect_ism()
1462 smc->connect_nonblock = 0; in smc_connect_ism()
1493 static int __smc_connect(struct smc_sock *smc) in __smc_connect() argument
1502 if (smc->use_fallback) in __smc_connect()
1503 return smc_connect_fallback(smc, smc->fallback_rsn); in __smc_connect()
1505 /* if peer has not signalled SMC-capability, fall back */ in __smc_connect()
1506 if (!tcp_sk(smc->clcsock->sk)->syn_smc) in __smc_connect()
1507 return smc_connect_fallback(smc, SMC_CLC_DECL_PEERNOSMC); in __smc_connect()
1509 /* IPSec connections opt out of SMC optimizations */ in __smc_connect()
1510 if (using_ipsec(smc)) in __smc_connect()
1511 return smc_connect_decline_fallback(smc, SMC_CLC_DECL_IPSEC, in __smc_connect()
1516 return smc_connect_decline_fallback(smc, SMC_CLC_DECL_MEM, in __smc_connect()
1525 if (smc_vlan_by_tcpsk(smc->clcsock, ini)) { in __smc_connect()
1535 rc = smc_find_proposal_devices(smc, ini); in __smc_connect()
1548 rc = smc_connect_clc(smc, aclc2, ini); in __smc_connect()
1553 smc->sk.sk_err = ETIMEDOUT; in __smc_connect()
1558 /* check if smc modes and versions of CLC proposal and accept match */ in __smc_connect()
1567 rc = smc_connect_rdma(smc, aclc, ini); in __smc_connect()
1570 rc = smc_connect_ism(smc, aclc, ini); in __smc_connect()
1575 SMC_STAT_CLNT_SUCC_INC(sock_net(smc->clcsock->sk), aclc); in __smc_connect()
1576 smc_connect_ism_vlan_cleanup(smc, ini); in __smc_connect()
1582 smc_connect_ism_vlan_cleanup(smc, ini); in __smc_connect()
1586 return smc_connect_decline_fallback(smc, rc, version); in __smc_connect()
1591 struct smc_sock *smc = container_of(work, struct smc_sock, in smc_connect_work() local
1593 long timeo = smc->sk.sk_sndtimeo; in smc_connect_work()
1598 lock_sock(smc->clcsock->sk); in smc_connect_work()
1599 if (smc->clcsock->sk->sk_err) { in smc_connect_work()
1600 smc->sk.sk_err = smc->clcsock->sk->sk_err; in smc_connect_work()
1601 } else if ((1 << smc->clcsock->sk->sk_state) & in smc_connect_work()
1603 rc = sk_stream_wait_connect(smc->clcsock->sk, &timeo); in smc_connect_work()
1605 ((1 << smc->clcsock->sk->sk_state) & in smc_connect_work()
1609 release_sock(smc->clcsock->sk); in smc_connect_work()
1610 lock_sock(&smc->sk); in smc_connect_work()
1611 if (rc != 0 || smc->sk.sk_err) { in smc_connect_work()
1612 smc->sk.sk_state = SMC_CLOSED; in smc_connect_work()
1614 smc->sk.sk_err = EPIPE; in smc_connect_work()
1616 smc->sk.sk_err = ECONNREFUSED; in smc_connect_work()
1618 smc->sk.sk_err = -sock_intr_errno(timeo); in smc_connect_work()
1619 sock_put(&smc->sk); /* passive closing */ in smc_connect_work()
1623 rc = __smc_connect(smc); in smc_connect_work()
1625 smc->sk.sk_err = -rc; in smc_connect_work()
1628 if (!sock_flag(&smc->sk, SOCK_DEAD)) { in smc_connect_work()
1629 if (smc->sk.sk_err) { in smc_connect_work()
1630 smc->sk.sk_state_change(&smc->sk); in smc_connect_work()
1632 smc->clcsock->sk->sk_write_space(smc->clcsock->sk); in smc_connect_work()
1633 smc->sk.sk_write_space(&smc->sk); in smc_connect_work()
1636 release_sock(&smc->sk); in smc_connect_work()
1643 struct smc_sock *smc; in smc_connect() local
1646 smc = smc_sk(sk); in smc_connect()
1648 /* separate smc parameter checking to be safe */ in smc_connect()
1685 smc_copy_sock_settings_to_clc(smc); in smc_connect()
1686 tcp_sk(smc->clcsock->sk)->syn_smc = 1; in smc_connect()
1687 if (smc->connect_nonblock) { in smc_connect()
1691 rc = kernel_connect(smc->clcsock, addr, alen, flags); in smc_connect()
1695 if (smc->use_fallback) { in smc_connect()
1699 sock_hold(&smc->sk); /* sock put in passive closing */ in smc_connect()
1701 if (queue_work(smc_hs_wq, &smc->connect_work)) in smc_connect()
1702 smc->connect_nonblock = 1; in smc_connect()
1706 rc = __smc_connect(smc); in smc_connect()
1756 /* new clcsock has inherited the smc listen-specific sk_data_ready in smc_clcsock_accept()
1842 struct smc_sock *smc = smc_sk(sk); in smc_close_non_accepted() local
1849 __smc_release(smc); in smc_close_non_accepted()
1855 static int smcr_serv_conf_first_link(struct smc_sock *smc) in smcr_serv_conf_first_link() argument
1857 struct smc_link *link = smc->conn.lnk; in smcr_serv_conf_first_link()
1862 if (smc->conn.sndbuf_desc->is_vm) { in smcr_serv_conf_first_link()
1863 if (smcr_link_reg_buf(link, smc->conn.sndbuf_desc)) in smcr_serv_conf_first_link()
1868 if (smcr_link_reg_buf(link, smc->conn.rmb_desc)) in smcr_serv_conf_first_link()
1882 rc = smc_clc_wait_msg(smc, &dclc, sizeof(dclc), in smcr_serv_conf_first_link()
1893 smc->conn.rmb_desc->is_conf_rkey = true; in smcr_serv_conf_first_link()
1946 this_cpu_inc(net->smc.smc_stats->srv_hshake_err_cnt); in smc_listen_out_err()
2073 /* listen worker: initialize connection and buffers for SMC-D */
2420 /* check if peer is smc capable */ in smc_listen_work()
2431 * wait for and receive SMC Proposal CLC message in smc_listen_work()
2447 /* IPSec connections opt out of SMC optimizations */ in smc_listen_work()
2478 /* send SMC Accept CLC message */ in smc_listen_work()
2485 /* SMC-D does not need this lock any more */ in smc_listen_work()
2489 /* receive SMC Confirm CLC message */ in smc_listen_work()
2507 /* fce smc release version is needed in smc_listen_rdma_finish, in smc_listen_work()
2591 struct smc_sock *smc; in smc_listen() local
2594 smc = smc_sk(sk); in smc_listen()
2599 smc->connect_nonblock || sock->state != SS_UNCONNECTED) in smc_listen()
2608 * them to the clc socket -- copy smc socket options to clc socket in smc_listen()
2610 smc_copy_sock_settings_to_clc(smc); in smc_listen()
2611 if (!smc->use_fallback) in smc_listen()
2612 tcp_sk(smc->clcsock->sk)->syn_smc = 1; in smc_listen()
2615 * smc-specific sk_data_ready function in smc_listen()
2617 write_lock_bh(&smc->clcsock->sk->sk_callback_lock); in smc_listen()
2618 smc->clcsock->sk->sk_user_data = in smc_listen()
2619 (void *)((uintptr_t)smc | SK_USER_DATA_NOCOPY); in smc_listen()
2620 smc_clcsock_replace_cb(&smc->clcsock->sk->sk_data_ready, in smc_listen()
2621 smc_clcsock_data_ready, &smc->clcsk_data_ready); in smc_listen()
2622 write_unlock_bh(&smc->clcsock->sk->sk_callback_lock); in smc_listen()
2625 smc->ori_af_ops = inet_csk(smc->clcsock->sk)->icsk_af_ops; in smc_listen()
2627 smc->af_ops = *smc->ori_af_ops; in smc_listen()
2628 smc->af_ops.syn_recv_sock = smc_tcp_syn_recv_sock; in smc_listen()
2630 inet_csk(smc->clcsock->sk)->icsk_af_ops = &smc->af_ops; in smc_listen()
2632 if (smc->limit_smc_hs) in smc_listen()
2633 tcp_sk(smc->clcsock->sk)->smc_hs_congested = smc_hs_congested; in smc_listen()
2635 rc = kernel_listen(smc->clcsock, backlog); in smc_listen()
2637 write_lock_bh(&smc->clcsock->sk->sk_callback_lock); in smc_listen()
2638 smc_clcsock_restore_cb(&smc->clcsock->sk->sk_data_ready, in smc_listen()
2639 &smc->clcsk_data_ready); in smc_listen()
2640 smc->clcsock->sk->sk_user_data = NULL; in smc_listen()
2641 write_unlock_bh(&smc->clcsock->sk->sk_callback_lock); in smc_listen()
2726 struct smc_sock *smc; in smc_getname() local
2732 smc = smc_sk(sock->sk); in smc_getname()
2734 return smc->clcsock->ops->getname(smc->clcsock, addr, peer); in smc_getname()
2740 struct smc_sock *smc; in smc_sendmsg() local
2743 smc = smc_sk(sk); in smc_sendmsg()
2746 /* SMC does not support connect with fastopen */ in smc_sendmsg()
2749 if (sk->sk_state == SMC_INIT && !smc->connect_nonblock) { in smc_sendmsg()
2750 rc = smc_switch_to_fallback(smc, SMC_CLC_DECL_OPTUNSUPP); in smc_sendmsg()
2764 if (smc->use_fallback) { in smc_sendmsg()
2765 rc = smc->clcsock->ops->sendmsg(smc->clcsock, msg, len); in smc_sendmsg()
2767 rc = smc_tx_sendmsg(smc, msg, len); in smc_sendmsg()
2768 SMC_STAT_TX_PAYLOAD(smc, len, rc); in smc_sendmsg()
2779 struct smc_sock *smc; in smc_recvmsg() local
2782 smc = smc_sk(sk); in smc_recvmsg()
2799 if (smc->use_fallback) { in smc_recvmsg()
2800 rc = smc->clcsock->ops->recvmsg(smc->clcsock, msg, len, flags); in smc_recvmsg()
2803 rc = smc_rx_recvmsg(smc, msg, NULL, len, flags); in smc_recvmsg()
2804 SMC_STAT_RX_PAYLOAD(smc, rc, rc); in smc_recvmsg()
2829 struct smc_sock *smc; in smc_poll() local
2835 smc = smc_sk(sock->sk); in smc_poll()
2836 if (smc->use_fallback) { in smc_poll()
2838 mask = smc->clcsock->ops->poll(file, smc->clcsock, wait); in smc_poll()
2839 sk->sk_err = smc->clcsock->sk->sk_err; in smc_poll()
2851 } else if (smc->use_fallback) { /* as result of connect_work()*/ in smc_poll()
2852 mask |= smc->clcsock->ops->poll(file, smc->clcsock, in smc_poll()
2854 sk->sk_err = smc->clcsock->sk->sk_err; in smc_poll()
2857 atomic_read(&smc->conn.sndbuf_space)) || in smc_poll()
2864 if (atomic_read(&smc->conn.bytes_to_rcv)) in smc_poll()
2870 if (smc->conn.urg_state == SMC_URG_VALID) in smc_poll()
2882 struct smc_sock *smc; in smc_shutdown() local
2887 smc = smc_sk(sk); in smc_shutdown()
2913 if (smc->use_fallback) { in smc_shutdown()
2914 rc = kernel_sock_shutdown(smc->clcsock, how); in smc_shutdown()
2915 sk->sk_shutdown = smc->clcsock->sk->sk_shutdown; in smc_shutdown()
2926 rc = smc_close_active(smc); in smc_shutdown()
2932 rc = smc_close_shutdown_write(smc); in smc_shutdown()
2939 if (do_shutdown && smc->clcsock) in smc_shutdown()
2940 rc1 = kernel_sock_shutdown(smc->clcsock, how); in smc_shutdown()
2956 struct smc_sock *smc; in __smc_getsockopt() local
2959 smc = smc_sk(sock->sk); in __smc_getsockopt()
2971 val = smc->limit_smc_hs; in __smc_getsockopt()
2989 struct smc_sock *smc; in __smc_setsockopt() local
2992 smc = smc_sk(sk); in __smc_setsockopt()
3006 smc->limit_smc_hs = !!val; in __smc_setsockopt()
3022 struct smc_sock *smc; in smc_setsockopt() local
3030 smc = smc_sk(sk); in smc_setsockopt()
3035 mutex_lock(&smc->clcsock_release_lock); in smc_setsockopt()
3036 if (!smc->clcsock) { in smc_setsockopt()
3037 mutex_unlock(&smc->clcsock_release_lock); in smc_setsockopt()
3040 if (unlikely(!smc->clcsock->ops->setsockopt)) in smc_setsockopt()
3043 rc = smc->clcsock->ops->setsockopt(smc->clcsock, level, optname, in smc_setsockopt()
3045 if (smc->clcsock->sk->sk_err) { in smc_setsockopt()
3046 sk->sk_err = smc->clcsock->sk->sk_err; in smc_setsockopt()
3049 mutex_unlock(&smc->clcsock_release_lock); in smc_setsockopt()
3057 if (rc || smc->use_fallback) in smc_setsockopt()
3064 /* option not supported by SMC */ in smc_setsockopt()
3065 if (sk->sk_state == SMC_INIT && !smc->connect_nonblock) { in smc_setsockopt()
3066 rc = smc_switch_to_fallback(smc, SMC_CLC_DECL_OPTUNSUPP); in smc_setsockopt()
3076 SMC_STAT_INC(smc, ndly_cnt); in smc_setsockopt()
3077 smc_tx_pending(&smc->conn); in smc_setsockopt()
3078 cancel_delayed_work(&smc->conn.tx_work); in smc_setsockopt()
3087 SMC_STAT_INC(smc, cork_cnt); in smc_setsockopt()
3088 smc_tx_pending(&smc->conn); in smc_setsockopt()
3089 cancel_delayed_work(&smc->conn.tx_work); in smc_setsockopt()
3094 smc->sockopt_defer_accept = val; in smc_setsockopt()
3108 struct smc_sock *smc; in smc_getsockopt() local
3114 smc = smc_sk(sock->sk); in smc_getsockopt()
3115 mutex_lock(&smc->clcsock_release_lock); in smc_getsockopt()
3116 if (!smc->clcsock) { in smc_getsockopt()
3117 mutex_unlock(&smc->clcsock_release_lock); in smc_getsockopt()
3121 if (unlikely(!smc->clcsock->ops->getsockopt)) { in smc_getsockopt()
3122 mutex_unlock(&smc->clcsock_release_lock); in smc_getsockopt()
3125 rc = smc->clcsock->ops->getsockopt(smc->clcsock, level, optname, in smc_getsockopt()
3127 mutex_unlock(&smc->clcsock_release_lock); in smc_getsockopt()
3136 struct smc_sock *smc; in smc_ioctl() local
3139 smc = smc_sk(sock->sk); in smc_ioctl()
3140 conn = &smc->conn; in smc_ioctl()
3141 lock_sock(&smc->sk); in smc_ioctl()
3142 if (smc->use_fallback) { in smc_ioctl()
3143 if (!smc->clcsock) { in smc_ioctl()
3144 release_sock(&smc->sk); in smc_ioctl()
3147 answ = smc->clcsock->ops->ioctl(smc->clcsock, cmd, arg); in smc_ioctl()
3148 release_sock(&smc->sk); in smc_ioctl()
3153 if (smc->sk.sk_state == SMC_LISTEN) { in smc_ioctl()
3154 release_sock(&smc->sk); in smc_ioctl()
3157 if (smc->sk.sk_state == SMC_INIT || in smc_ioctl()
3158 smc->sk.sk_state == SMC_CLOSED) in smc_ioctl()
3161 answ = atomic_read(&smc->conn.bytes_to_rcv); in smc_ioctl()
3165 if (smc->sk.sk_state == SMC_LISTEN) { in smc_ioctl()
3166 release_sock(&smc->sk); in smc_ioctl()
3169 if (smc->sk.sk_state == SMC_INIT || in smc_ioctl()
3170 smc->sk.sk_state == SMC_CLOSED) in smc_ioctl()
3173 answ = smc->conn.sndbuf_desc->len - in smc_ioctl()
3174 atomic_read(&smc->conn.sndbuf_space); in smc_ioctl()
3178 if (smc->sk.sk_state == SMC_LISTEN) { in smc_ioctl()
3179 release_sock(&smc->sk); in smc_ioctl()
3182 if (smc->sk.sk_state == SMC_INIT || in smc_ioctl()
3183 smc->sk.sk_state == SMC_CLOSED) in smc_ioctl()
3186 answ = smc_tx_prepared_sends(&smc->conn); in smc_ioctl()
3189 if (smc->sk.sk_state == SMC_LISTEN) { in smc_ioctl()
3190 release_sock(&smc->sk); in smc_ioctl()
3193 if (smc->sk.sk_state == SMC_INIT || in smc_ioctl()
3194 smc->sk.sk_state == SMC_CLOSED) { in smc_ioctl()
3204 release_sock(&smc->sk); in smc_ioctl()
3207 release_sock(&smc->sk); in smc_ioctl()
3223 struct smc_sock *smc; in smc_splice_read() local
3226 smc = smc_sk(sk); in smc_splice_read()
3243 if (smc->use_fallback) { in smc_splice_read()
3244 rc = smc->clcsock->ops->splice_read(smc->clcsock, ppos, in smc_splice_read()
3255 SMC_STAT_INC(smc, splice_cnt); in smc_splice_read()
3256 rc = smc_rx_recvmsg(smc, NULL, pipe, len, flags); in smc_splice_read()
3290 struct smc_sock *smc; in __smc_create() local
3310 smc = smc_sk(sk); in __smc_create()
3311 smc->use_fallback = false; /* assume rdma capability first */ in __smc_create()
3312 smc->fallback_rsn = 0; in __smc_create()
3315 smc->limit_smc_hs = net->smc.limit_smc_hs; in __smc_create()
3320 &smc->clcsock); in __smc_create()
3326 /* smc_clcsock_release() does not wait smc->clcsock->sk's in __smc_create()
3328 * smc->sk is close()d, and TCP timers can be fired later, in __smc_create()
3331 sk = smc->clcsock->sk; in __smc_create()
3337 smc->clcsock = clcsock; in __smc_create()
3388 /* replace tcp socket to smc */ in smc_ulp_init()
3408 .name = "smc",
3602 MODULE_DESCRIPTION("smc socket address family");
3605 MODULE_ALIAS_TCP_ULP("smc");