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()
607 rc = smc_clc_wait_msg(smc, &dclc, sizeof(dclc), in smcr_clnt_conf_first_link()
624 if (smc->conn.sndbuf_desc->is_vm) { in smcr_clnt_conf_first_link()
625 if (smcr_link_reg_buf(link, smc->conn.sndbuf_desc)) in smcr_clnt_conf_first_link()
630 if (smcr_link_reg_buf(link, smc->conn.rmb_desc)) in smcr_clnt_conf_first_link()
634 smc->conn.rmb_desc->is_conf_rkey = true; in smcr_clnt_conf_first_link()
651 rc = smc_clc_wait_msg(smc, &dclc, sizeof(dclc), in smcr_clnt_conf_first_link()
673 static void smc_conn_save_peer_info_fce(struct smc_sock *smc, in smc_conn_save_peer_info_fce() argument
685 if (smc->conn.lgr->is_smcd) { in smc_conn_save_peer_info_fce()
686 memcpy(smc->conn.lgr->negotiated_eid, clc_v2->d1.eid, in smc_conn_save_peer_info_fce()
691 memcpy(smc->conn.lgr->negotiated_eid, clc_v2->r1.eid, in smc_conn_save_peer_info_fce()
697 smc->conn.lgr->peer_os = fce->os_type; in smc_conn_save_peer_info_fce()
698 smc->conn.lgr->peer_smc_release = fce->release; in smc_conn_save_peer_info_fce()
700 memcpy(smc->conn.lgr->peer_hostname, fce->hostname, in smc_conn_save_peer_info_fce()
704 static void smcr_conn_save_peer_info(struct smc_sock *smc, in smcr_conn_save_peer_info() argument
709 smc->conn.peer_rmbe_idx = clc->r0.rmbe_idx; in smcr_conn_save_peer_info()
710 smc->conn.local_tx_ctrl.token = ntohl(clc->r0.rmbe_alert_token); in smcr_conn_save_peer_info()
711 smc->conn.peer_rmbe_size = bufsize; in smcr_conn_save_peer_info()
712 atomic_set(&smc->conn.peer_rmbe_space, smc->conn.peer_rmbe_size); in smcr_conn_save_peer_info()
713 smc->conn.tx_off = bufsize * (smc->conn.peer_rmbe_idx - 1); in smcr_conn_save_peer_info()
716 static void smcd_conn_save_peer_info(struct smc_sock *smc, in smcd_conn_save_peer_info() argument
721 smc->conn.peer_rmbe_idx = clc->d0.dmbe_idx; in smcd_conn_save_peer_info()
722 smc->conn.peer_token = clc->d0.token; in smcd_conn_save_peer_info()
724 smc->conn.peer_rmbe_size = bufsize - sizeof(struct smcd_cdc_msg); in smcd_conn_save_peer_info()
725 atomic_set(&smc->conn.peer_rmbe_space, smc->conn.peer_rmbe_size); in smcd_conn_save_peer_info()
726 smc->conn.tx_off = bufsize * smc->conn.peer_rmbe_idx; in smcd_conn_save_peer_info()
729 static void smc_conn_save_peer_info(struct smc_sock *smc, in smc_conn_save_peer_info() argument
732 if (smc->conn.lgr->is_smcd) in smc_conn_save_peer_info()
733 smcd_conn_save_peer_info(smc, clc); in smc_conn_save_peer_info()
735 smcr_conn_save_peer_info(smc, clc); in smc_conn_save_peer_info()
736 smc_conn_save_peer_info_fce(smc, clc); in smc_conn_save_peer_info()
750 static void smc_stat_inc_fback_rsn_cnt(struct smc_sock *smc, in smc_stat_inc_fback_rsn_cnt() argument
756 if (fback_arr[cnt].fback_code == smc->fallback_rsn) { in smc_stat_inc_fback_rsn_cnt()
761 fback_arr[cnt].fback_code = smc->fallback_rsn; in smc_stat_inc_fback_rsn_cnt()
768 static void smc_stat_fallback(struct smc_sock *smc) in smc_stat_fallback() argument
770 struct net *net = sock_net(&smc->sk); in smc_stat_fallback()
772 mutex_lock(&net->smc.mutex_fback_rsn); in smc_stat_fallback()
773 if (smc->listen_smc) { in smc_stat_fallback()
774 smc_stat_inc_fback_rsn_cnt(smc, net->smc.fback_rsn->srv); in smc_stat_fallback()
775 net->smc.fback_rsn->srv_fback_cnt++; in smc_stat_fallback()
777 smc_stat_inc_fback_rsn_cnt(smc, net->smc.fback_rsn->clnt); in smc_stat_fallback()
778 net->smc.fback_rsn->clnt_fback_cnt++; in smc_stat_fallback()
780 mutex_unlock(&net->smc.mutex_fback_rsn); in smc_stat_fallback()
784 static void smc_fback_wakeup_waitqueue(struct smc_sock *smc, void *key) in smc_fback_wakeup_waitqueue() argument
789 wq = rcu_dereference(smc->sk.sk_wq); in smc_fback_wakeup_waitqueue()
793 /* wake up smc sk->sk_wq */ in smc_fback_wakeup_waitqueue()
819 static void smc_fback_forward_wakeup(struct smc_sock *smc, struct sock *clcsk, in smc_fback_forward_wakeup() argument
836 smc_fback_wakeup_waitqueue(smc, mark.key); in smc_fback_forward_wakeup()
843 struct smc_sock *smc; in smc_fback_state_change() local
846 smc = smc_clcsock_user_data(clcsk); in smc_fback_state_change()
847 if (smc) in smc_fback_state_change()
848 smc_fback_forward_wakeup(smc, clcsk, in smc_fback_state_change()
849 smc->clcsk_state_change); in smc_fback_state_change()
855 struct smc_sock *smc; in smc_fback_data_ready() local
858 smc = smc_clcsock_user_data(clcsk); in smc_fback_data_ready()
859 if (smc) in smc_fback_data_ready()
860 smc_fback_forward_wakeup(smc, clcsk, in smc_fback_data_ready()
861 smc->clcsk_data_ready); in smc_fback_data_ready()
867 struct smc_sock *smc; in smc_fback_write_space() local
870 smc = smc_clcsock_user_data(clcsk); in smc_fback_write_space()
871 if (smc) in smc_fback_write_space()
872 smc_fback_forward_wakeup(smc, clcsk, in smc_fback_write_space()
873 smc->clcsk_write_space); in smc_fback_write_space()
879 struct smc_sock *smc; in smc_fback_error_report() local
882 smc = smc_clcsock_user_data(clcsk); in smc_fback_error_report()
883 if (smc) in smc_fback_error_report()
884 smc_fback_forward_wakeup(smc, clcsk, in smc_fback_error_report()
885 smc->clcsk_error_report); in smc_fback_error_report()
889 static void smc_fback_replace_callbacks(struct smc_sock *smc) in smc_fback_replace_callbacks() argument
891 struct sock *clcsk = smc->clcsock->sk; in smc_fback_replace_callbacks()
894 clcsk->sk_user_data = (void *)((uintptr_t)smc | SK_USER_DATA_NOCOPY); in smc_fback_replace_callbacks()
897 &smc->clcsk_state_change); in smc_fback_replace_callbacks()
899 &smc->clcsk_data_ready); in smc_fback_replace_callbacks()
901 &smc->clcsk_write_space); in smc_fback_replace_callbacks()
903 &smc->clcsk_error_report); in smc_fback_replace_callbacks()
908 static int smc_switch_to_fallback(struct smc_sock *smc, int reason_code) in smc_switch_to_fallback() argument
912 mutex_lock(&smc->clcsock_release_lock); in smc_switch_to_fallback()
913 if (!smc->clcsock) { in smc_switch_to_fallback()
918 smc->use_fallback = true; in smc_switch_to_fallback()
919 smc->fallback_rsn = reason_code; in smc_switch_to_fallback()
920 smc_stat_fallback(smc); in smc_switch_to_fallback()
921 trace_smc_switch_to_fallback(smc, reason_code); in smc_switch_to_fallback()
922 if (smc->sk.sk_socket && smc->sk.sk_socket->file) { in smc_switch_to_fallback()
923 smc->clcsock->file = smc->sk.sk_socket->file; in smc_switch_to_fallback()
924 smc->clcsock->file->private_data = smc->clcsock; in smc_switch_to_fallback()
925 smc->clcsock->wq.fasync_list = in smc_switch_to_fallback()
926 smc->sk.sk_socket->wq.fasync_list; in smc_switch_to_fallback()
929 * in smc sk->sk_wq and they should be woken up in smc_switch_to_fallback()
932 smc_fback_replace_callbacks(smc); in smc_switch_to_fallback()
935 mutex_unlock(&smc->clcsock_release_lock); in smc_switch_to_fallback()
940 static int smc_connect_fallback(struct smc_sock *smc, int reason_code) in smc_connect_fallback() argument
942 struct net *net = sock_net(&smc->sk); in smc_connect_fallback()
945 rc = smc_switch_to_fallback(smc, reason_code); in smc_connect_fallback()
947 this_cpu_inc(net->smc.smc_stats->clnt_hshake_err_cnt); in smc_connect_fallback()
948 if (smc->sk.sk_state == SMC_INIT) in smc_connect_fallback()
949 sock_put(&smc->sk); /* passive closing */ in smc_connect_fallback()
952 smc_copy_sock_settings_to_clc(smc); in smc_connect_fallback()
953 smc->connect_nonblock = 0; in smc_connect_fallback()
954 if (smc->sk.sk_state == SMC_INIT) in smc_connect_fallback()
955 smc->sk.sk_state = SMC_ACTIVE; in smc_connect_fallback()
960 static int smc_connect_decline_fallback(struct smc_sock *smc, int reason_code, in smc_connect_decline_fallback() argument
963 struct net *net = sock_net(&smc->sk); in smc_connect_decline_fallback()
967 this_cpu_inc(net->smc.smc_stats->clnt_hshake_err_cnt); in smc_connect_decline_fallback()
968 if (smc->sk.sk_state == SMC_INIT) in smc_connect_decline_fallback()
969 sock_put(&smc->sk); /* passive closing */ in smc_connect_decline_fallback()
973 rc = smc_clc_send_decline(smc, reason_code, version); in smc_connect_decline_fallback()
975 this_cpu_inc(net->smc.smc_stats->clnt_hshake_err_cnt); in smc_connect_decline_fallback()
976 if (smc->sk.sk_state == SMC_INIT) in smc_connect_decline_fallback()
977 sock_put(&smc->sk); /* passive closing */ in smc_connect_decline_fallback()
981 return smc_connect_fallback(smc, reason_code); in smc_connect_decline_fallback()
984 static void smc_conn_abort(struct smc_sock *smc, int local_first) in smc_conn_abort() argument
986 struct smc_connection *conn = &smc->conn; in smc_conn_abort()
1000 static int smc_find_rdma_device(struct smc_sock *smc, struct smc_init_info *ini) in smc_find_rdma_device() argument
1006 smc_pnet_find_roce_resource(smc->clcsock->sk, ini); in smc_find_rdma_device()
1016 static int smc_find_ism_device(struct smc_sock *smc, struct smc_init_info *ini) in smc_find_ism_device() argument
1019 smc_pnet_find_ism_resource(smc->clcsock->sk, ini); in smc_find_ism_device()
1042 static int smc_find_ism_v2_device_clnt(struct smc_sock *smc, in smc_find_ism_v2_device_clnt() argument
1060 smc_pnet_is_ndev_pnetid(sock_net(&smc->sk), smcd->pnetid)) { in smc_find_ism_v2_device_clnt()
1079 static int smc_connect_ism_vlan_setup(struct smc_sock *smc, in smc_connect_ism_vlan_setup() argument
1087 static int smc_find_proposal_devices(struct smc_sock *smc, in smc_find_proposal_devices() argument
1094 smc_find_ism_device(smc, ini) || in smc_find_proposal_devices()
1095 smc_connect_ism_vlan_setup(smc, ini)) in smc_find_proposal_devices()
1101 smc_find_rdma_device(smc, ini)) in smc_find_proposal_devices()
1111 smc_find_ism_v2_device_clnt(smc, ini)) in smc_find_proposal_devices()
1116 ini->smcrv2.saddr = smc->clcsock->sk->sk_rcv_saddr; in smc_find_proposal_devices()
1118 smc->clcsock->sk->sk_family != AF_INET || in smc_find_proposal_devices()
1120 smc_find_rdma_device(smc, ini)) in smc_find_proposal_devices()
1137 static int smc_connect_ism_vlan_cleanup(struct smc_sock *smc, in smc_connect_ism_vlan_cleanup() argument
1153 static int smc_connect_clc(struct smc_sock *smc, in smc_connect_clc() argument
1160 rc = smc_clc_send_proposal(smc, ini); in smc_connect_clc()
1163 /* receive SMC Accept CLC message */ in smc_connect_clc()
1164 return smc_clc_wait_msg(smc, aclc2, SMC_CLC_MAX_ACCEPT_LEN, in smc_connect_clc()
1196 static int smc_connect_rdma_v2_prepare(struct smc_sock *smc, in smc_connect_rdma_v2_prepare() argument
1204 struct net *net = sock_net(&smc->sk); in smc_connect_rdma_v2_prepare()
1214 if (smc_ib_find_route(net, smc->clcsock->sk->sk_rcv_saddr, in smc_connect_rdma_v2_prepare()
1234 static int smc_connect_rdma(struct smc_sock *smc, in smc_connect_rdma() argument
1251 reason_code = smc_connect_rdma_v2_prepare(smc, aclc, ini); in smc_connect_rdma()
1256 reason_code = smc_conn_create(smc, ini); in smc_connect_rdma()
1262 smc_conn_save_peer_info(smc, aclc); in smc_connect_rdma()
1265 link = smc->conn.lnk; in smc_connect_rdma()
1270 struct smc_link *l = &smc->conn.lgr->lnk[i]; in smc_connect_rdma()
1286 smc_switch_link_and_count(&smc->conn, link); in smc_connect_rdma()
1290 if (smc_buf_create(smc, false)) { in smc_connect_rdma()
1298 if (smc_rmb_rtoken_handling(&smc->conn, link, aclc)) { in smc_connect_rdma()
1303 smc_close_init(smc); in smc_connect_rdma()
1304 smc_rx_init(smc); in smc_connect_rdma()
1313 if (smc->conn.sndbuf_desc->is_vm) { in smc_connect_rdma()
1314 if (smcr_lgr_reg_sndbufs(link, smc->conn.sndbuf_desc)) { in smc_connect_rdma()
1319 if (smcr_lgr_reg_rmbs(link, smc->conn.rmb_desc)) { in smc_connect_rdma()
1335 reason_code = smc_clc_send_confirm(smc, ini->first_contact_local, in smc_connect_rdma()
1340 smc_tx_init(smc); in smc_connect_rdma()
1345 reason_code = smcr_clnt_conf_first_link(smc); in smc_connect_rdma()
1352 smc_copy_sock_settings_to_clc(smc); in smc_connect_rdma()
1353 smc->connect_nonblock = 0; in smc_connect_rdma()
1354 if (smc->sk.sk_state == SMC_INIT) in smc_connect_rdma()
1355 smc->sk.sk_state = SMC_ACTIVE; in smc_connect_rdma()
1359 smc_conn_abort(smc, ini->first_contact_local); in smc_connect_rdma()
1361 smc->connect_nonblock = 0; in smc_connect_rdma()
1386 static int smc_connect_ism(struct smc_sock *smc, in smc_connect_ism() argument
1416 /* there is only one lgr role for SMC-D; use server lock */ in smc_connect_ism()
1418 rc = smc_conn_create(smc, ini); in smc_connect_ism()
1425 rc = smc_buf_create(smc, true); in smc_connect_ism()
1431 smc_conn_save_peer_info(smc, aclc); in smc_connect_ism()
1432 smc_close_init(smc); in smc_connect_ism()
1433 smc_rx_init(smc); in smc_connect_ism()
1434 smc_tx_init(smc); in smc_connect_ism()
1443 rc = smc_clc_send_confirm(smc, ini->first_contact_local, in smc_connect_ism()
1449 smc_copy_sock_settings_to_clc(smc); in smc_connect_ism()
1450 smc->connect_nonblock = 0; in smc_connect_ism()
1451 if (smc->sk.sk_state == SMC_INIT) in smc_connect_ism()
1452 smc->sk.sk_state = SMC_ACTIVE; in smc_connect_ism()
1456 smc_conn_abort(smc, ini->first_contact_local); in smc_connect_ism()
1458 smc->connect_nonblock = 0; in smc_connect_ism()
1489 static int __smc_connect(struct smc_sock *smc) in __smc_connect() argument
1498 if (smc->use_fallback) in __smc_connect()
1499 return smc_connect_fallback(smc, smc->fallback_rsn); in __smc_connect()
1501 /* if peer has not signalled SMC-capability, fall back */ in __smc_connect()
1502 if (!tcp_sk(smc->clcsock->sk)->syn_smc) in __smc_connect()
1503 return smc_connect_fallback(smc, SMC_CLC_DECL_PEERNOSMC); in __smc_connect()
1505 /* IPSec connections opt out of SMC optimizations */ in __smc_connect()
1506 if (using_ipsec(smc)) in __smc_connect()
1507 return smc_connect_decline_fallback(smc, SMC_CLC_DECL_IPSEC, in __smc_connect()
1512 return smc_connect_decline_fallback(smc, SMC_CLC_DECL_MEM, in __smc_connect()
1521 if (smc_vlan_by_tcpsk(smc->clcsock, ini)) { in __smc_connect()
1531 rc = smc_find_proposal_devices(smc, ini); in __smc_connect()
1544 rc = smc_connect_clc(smc, aclc2, ini); in __smc_connect()
1549 smc->sk.sk_err = ETIMEDOUT; in __smc_connect()
1554 /* check if smc modes and versions of CLC proposal and accept match */ in __smc_connect()
1563 rc = smc_connect_rdma(smc, aclc, ini); in __smc_connect()
1566 rc = smc_connect_ism(smc, aclc, ini); in __smc_connect()
1571 SMC_STAT_CLNT_SUCC_INC(sock_net(smc->clcsock->sk), aclc); in __smc_connect()
1572 smc_connect_ism_vlan_cleanup(smc, ini); in __smc_connect()
1578 smc_connect_ism_vlan_cleanup(smc, ini); in __smc_connect()
1582 return smc_connect_decline_fallback(smc, rc, version); in __smc_connect()
1587 struct smc_sock *smc = container_of(work, struct smc_sock, in smc_connect_work() local
1589 long timeo = smc->sk.sk_sndtimeo; in smc_connect_work()
1594 lock_sock(smc->clcsock->sk); in smc_connect_work()
1595 if (smc->clcsock->sk->sk_err) { in smc_connect_work()
1596 smc->sk.sk_err = smc->clcsock->sk->sk_err; in smc_connect_work()
1597 } else if ((1 << smc->clcsock->sk->sk_state) & in smc_connect_work()
1599 rc = sk_stream_wait_connect(smc->clcsock->sk, &timeo); in smc_connect_work()
1601 ((1 << smc->clcsock->sk->sk_state) & in smc_connect_work()
1605 release_sock(smc->clcsock->sk); in smc_connect_work()
1606 lock_sock(&smc->sk); in smc_connect_work()
1607 if (rc != 0 || smc->sk.sk_err) { in smc_connect_work()
1608 smc->sk.sk_state = SMC_CLOSED; in smc_connect_work()
1610 smc->sk.sk_err = EPIPE; in smc_connect_work()
1612 smc->sk.sk_err = ECONNREFUSED; in smc_connect_work()
1614 smc->sk.sk_err = -sock_intr_errno(timeo); in smc_connect_work()
1615 sock_put(&smc->sk); /* passive closing */ in smc_connect_work()
1619 rc = __smc_connect(smc); in smc_connect_work()
1621 smc->sk.sk_err = -rc; in smc_connect_work()
1624 if (!sock_flag(&smc->sk, SOCK_DEAD)) { in smc_connect_work()
1625 if (smc->sk.sk_err) { in smc_connect_work()
1626 smc->sk.sk_state_change(&smc->sk); in smc_connect_work()
1628 smc->clcsock->sk->sk_write_space(smc->clcsock->sk); in smc_connect_work()
1629 smc->sk.sk_write_space(&smc->sk); in smc_connect_work()
1632 release_sock(&smc->sk); in smc_connect_work()
1639 struct smc_sock *smc; in smc_connect() local
1642 smc = smc_sk(sk); in smc_connect()
1644 /* separate smc parameter checking to be safe */ in smc_connect()
1681 smc_copy_sock_settings_to_clc(smc); in smc_connect()
1682 tcp_sk(smc->clcsock->sk)->syn_smc = 1; in smc_connect()
1683 if (smc->connect_nonblock) { in smc_connect()
1687 rc = kernel_connect(smc->clcsock, addr, alen, flags); in smc_connect()
1691 if (smc->use_fallback) { in smc_connect()
1695 sock_hold(&smc->sk); /* sock put in passive closing */ in smc_connect()
1697 if (queue_work(smc_hs_wq, &smc->connect_work)) in smc_connect()
1698 smc->connect_nonblock = 1; in smc_connect()
1702 rc = __smc_connect(smc); in smc_connect()
1752 /* new clcsock has inherited the smc listen-specific sk_data_ready in smc_clcsock_accept()
1838 struct smc_sock *smc = smc_sk(sk); in smc_close_non_accepted() local
1845 __smc_release(smc); in smc_close_non_accepted()
1851 static int smcr_serv_conf_first_link(struct smc_sock *smc) in smcr_serv_conf_first_link() argument
1853 struct smc_link *link = smc->conn.lnk; in smcr_serv_conf_first_link()
1858 if (smc->conn.sndbuf_desc->is_vm) { in smcr_serv_conf_first_link()
1859 if (smcr_link_reg_buf(link, smc->conn.sndbuf_desc)) in smcr_serv_conf_first_link()
1864 if (smcr_link_reg_buf(link, smc->conn.rmb_desc)) in smcr_serv_conf_first_link()
1878 rc = smc_clc_wait_msg(smc, &dclc, sizeof(dclc), in smcr_serv_conf_first_link()
1889 smc->conn.rmb_desc->is_conf_rkey = true; in smcr_serv_conf_first_link()
1942 this_cpu_inc(net->smc.smc_stats->srv_hshake_err_cnt); in smc_listen_out_err()
2069 /* listen worker: initialize connection and buffers for SMC-D */
2416 /* check if peer is smc capable */ in smc_listen_work()
2427 * wait for and receive SMC Proposal CLC message in smc_listen_work()
2443 /* IPSec connections opt out of SMC optimizations */ in smc_listen_work()
2474 /* send SMC Accept CLC message */ in smc_listen_work()
2481 /* SMC-D does not need this lock any more */ in smc_listen_work()
2485 /* receive SMC Confirm CLC message */ in smc_listen_work()
2503 /* fce smc release version is needed in smc_listen_rdma_finish, in smc_listen_work()
2587 struct smc_sock *smc; in smc_listen() local
2590 smc = smc_sk(sk); in smc_listen()
2595 smc->connect_nonblock || sock->state != SS_UNCONNECTED) in smc_listen()
2604 * them to the clc socket -- copy smc socket options to clc socket in smc_listen()
2606 smc_copy_sock_settings_to_clc(smc); in smc_listen()
2607 if (!smc->use_fallback) in smc_listen()
2608 tcp_sk(smc->clcsock->sk)->syn_smc = 1; in smc_listen()
2611 * smc-specific sk_data_ready function in smc_listen()
2613 write_lock_bh(&smc->clcsock->sk->sk_callback_lock); in smc_listen()
2614 smc->clcsock->sk->sk_user_data = in smc_listen()
2615 (void *)((uintptr_t)smc | SK_USER_DATA_NOCOPY); in smc_listen()
2616 smc_clcsock_replace_cb(&smc->clcsock->sk->sk_data_ready, in smc_listen()
2617 smc_clcsock_data_ready, &smc->clcsk_data_ready); in smc_listen()
2618 write_unlock_bh(&smc->clcsock->sk->sk_callback_lock); in smc_listen()
2621 smc->ori_af_ops = inet_csk(smc->clcsock->sk)->icsk_af_ops; in smc_listen()
2623 smc->af_ops = *smc->ori_af_ops; in smc_listen()
2624 smc->af_ops.syn_recv_sock = smc_tcp_syn_recv_sock; in smc_listen()
2626 inet_csk(smc->clcsock->sk)->icsk_af_ops = &smc->af_ops; in smc_listen()
2628 if (smc->limit_smc_hs) in smc_listen()
2629 tcp_sk(smc->clcsock->sk)->smc_hs_congested = smc_hs_congested; in smc_listen()
2631 rc = kernel_listen(smc->clcsock, backlog); in smc_listen()
2633 write_lock_bh(&smc->clcsock->sk->sk_callback_lock); in smc_listen()
2634 smc_clcsock_restore_cb(&smc->clcsock->sk->sk_data_ready, in smc_listen()
2635 &smc->clcsk_data_ready); in smc_listen()
2636 smc->clcsock->sk->sk_user_data = NULL; in smc_listen()
2637 write_unlock_bh(&smc->clcsock->sk->sk_callback_lock); in smc_listen()
2722 struct smc_sock *smc; in smc_getname() local
2728 smc = smc_sk(sock->sk); in smc_getname()
2730 return smc->clcsock->ops->getname(smc->clcsock, addr, peer); in smc_getname()
2736 struct smc_sock *smc; in smc_sendmsg() local
2739 smc = smc_sk(sk); in smc_sendmsg()
2742 /* SMC does not support connect with fastopen */ in smc_sendmsg()
2745 if (sk->sk_state == SMC_INIT && !smc->connect_nonblock) { in smc_sendmsg()
2746 rc = smc_switch_to_fallback(smc, SMC_CLC_DECL_OPTUNSUPP); in smc_sendmsg()
2760 if (smc->use_fallback) { in smc_sendmsg()
2761 rc = smc->clcsock->ops->sendmsg(smc->clcsock, msg, len); in smc_sendmsg()
2763 rc = smc_tx_sendmsg(smc, msg, len); in smc_sendmsg()
2764 SMC_STAT_TX_PAYLOAD(smc, len, rc); in smc_sendmsg()
2775 struct smc_sock *smc; in smc_recvmsg() local
2778 smc = smc_sk(sk); in smc_recvmsg()
2795 if (smc->use_fallback) { in smc_recvmsg()
2796 rc = smc->clcsock->ops->recvmsg(smc->clcsock, msg, len, flags); in smc_recvmsg()
2799 rc = smc_rx_recvmsg(smc, msg, NULL, len, flags); in smc_recvmsg()
2800 SMC_STAT_RX_PAYLOAD(smc, rc, rc); in smc_recvmsg()
2825 struct smc_sock *smc; in smc_poll() local
2831 smc = smc_sk(sock->sk); in smc_poll()
2832 if (smc->use_fallback) { in smc_poll()
2834 mask = smc->clcsock->ops->poll(file, smc->clcsock, wait); in smc_poll()
2835 sk->sk_err = smc->clcsock->sk->sk_err; in smc_poll()
2847 } else if (smc->use_fallback) { /* as result of connect_work()*/ in smc_poll()
2848 mask |= smc->clcsock->ops->poll(file, smc->clcsock, in smc_poll()
2850 sk->sk_err = smc->clcsock->sk->sk_err; in smc_poll()
2853 atomic_read(&smc->conn.sndbuf_space)) || in smc_poll()
2860 if (atomic_read(&smc->conn.bytes_to_rcv)) in smc_poll()
2866 if (smc->conn.urg_state == SMC_URG_VALID) in smc_poll()
2878 struct smc_sock *smc; in smc_shutdown() local
2883 smc = smc_sk(sk); in smc_shutdown()
2909 if (smc->use_fallback) { in smc_shutdown()
2910 rc = kernel_sock_shutdown(smc->clcsock, how); in smc_shutdown()
2911 sk->sk_shutdown = smc->clcsock->sk->sk_shutdown; in smc_shutdown()
2922 rc = smc_close_active(smc); in smc_shutdown()
2928 rc = smc_close_shutdown_write(smc); in smc_shutdown()
2935 if (do_shutdown && smc->clcsock) in smc_shutdown()
2936 rc1 = kernel_sock_shutdown(smc->clcsock, how); in smc_shutdown()
2952 struct smc_sock *smc; in __smc_getsockopt() local
2955 smc = smc_sk(sock->sk); in __smc_getsockopt()
2967 val = smc->limit_smc_hs; in __smc_getsockopt()
2985 struct smc_sock *smc; in __smc_setsockopt() local
2988 smc = smc_sk(sk); in __smc_setsockopt()
3002 smc->limit_smc_hs = !!val; in __smc_setsockopt()
3018 struct smc_sock *smc; in smc_setsockopt() local
3026 smc = smc_sk(sk); in smc_setsockopt()
3031 mutex_lock(&smc->clcsock_release_lock); in smc_setsockopt()
3032 if (!smc->clcsock) { in smc_setsockopt()
3033 mutex_unlock(&smc->clcsock_release_lock); in smc_setsockopt()
3036 if (unlikely(!smc->clcsock->ops->setsockopt)) in smc_setsockopt()
3039 rc = smc->clcsock->ops->setsockopt(smc->clcsock, level, optname, in smc_setsockopt()
3041 if (smc->clcsock->sk->sk_err) { in smc_setsockopt()
3042 sk->sk_err = smc->clcsock->sk->sk_err; in smc_setsockopt()
3045 mutex_unlock(&smc->clcsock_release_lock); in smc_setsockopt()
3053 if (rc || smc->use_fallback) in smc_setsockopt()
3060 /* option not supported by SMC */ in smc_setsockopt()
3061 if (sk->sk_state == SMC_INIT && !smc->connect_nonblock) { in smc_setsockopt()
3062 rc = smc_switch_to_fallback(smc, SMC_CLC_DECL_OPTUNSUPP); in smc_setsockopt()
3072 SMC_STAT_INC(smc, ndly_cnt); in smc_setsockopt()
3073 smc_tx_pending(&smc->conn); in smc_setsockopt()
3074 cancel_delayed_work(&smc->conn.tx_work); in smc_setsockopt()
3083 SMC_STAT_INC(smc, cork_cnt); in smc_setsockopt()
3084 smc_tx_pending(&smc->conn); in smc_setsockopt()
3085 cancel_delayed_work(&smc->conn.tx_work); in smc_setsockopt()
3090 smc->sockopt_defer_accept = val; in smc_setsockopt()
3104 struct smc_sock *smc; in smc_getsockopt() local
3110 smc = smc_sk(sock->sk); in smc_getsockopt()
3111 mutex_lock(&smc->clcsock_release_lock); in smc_getsockopt()
3112 if (!smc->clcsock) { in smc_getsockopt()
3113 mutex_unlock(&smc->clcsock_release_lock); in smc_getsockopt()
3117 if (unlikely(!smc->clcsock->ops->getsockopt)) { in smc_getsockopt()
3118 mutex_unlock(&smc->clcsock_release_lock); in smc_getsockopt()
3121 rc = smc->clcsock->ops->getsockopt(smc->clcsock, level, optname, in smc_getsockopt()
3123 mutex_unlock(&smc->clcsock_release_lock); in smc_getsockopt()
3132 struct smc_sock *smc; in smc_ioctl() local
3135 smc = smc_sk(sock->sk); in smc_ioctl()
3136 conn = &smc->conn; in smc_ioctl()
3137 lock_sock(&smc->sk); in smc_ioctl()
3138 if (smc->use_fallback) { in smc_ioctl()
3139 if (!smc->clcsock) { in smc_ioctl()
3140 release_sock(&smc->sk); in smc_ioctl()
3143 answ = smc->clcsock->ops->ioctl(smc->clcsock, cmd, arg); in smc_ioctl()
3144 release_sock(&smc->sk); in smc_ioctl()
3149 if (smc->sk.sk_state == SMC_LISTEN) { in smc_ioctl()
3150 release_sock(&smc->sk); in smc_ioctl()
3153 if (smc->sk.sk_state == SMC_INIT || in smc_ioctl()
3154 smc->sk.sk_state == SMC_CLOSED) in smc_ioctl()
3157 answ = atomic_read(&smc->conn.bytes_to_rcv); in smc_ioctl()
3161 if (smc->sk.sk_state == SMC_LISTEN) { in smc_ioctl()
3162 release_sock(&smc->sk); in smc_ioctl()
3165 if (smc->sk.sk_state == SMC_INIT || in smc_ioctl()
3166 smc->sk.sk_state == SMC_CLOSED) in smc_ioctl()
3169 answ = smc->conn.sndbuf_desc->len - in smc_ioctl()
3170 atomic_read(&smc->conn.sndbuf_space); in smc_ioctl()
3174 if (smc->sk.sk_state == SMC_LISTEN) { in smc_ioctl()
3175 release_sock(&smc->sk); in smc_ioctl()
3178 if (smc->sk.sk_state == SMC_INIT || in smc_ioctl()
3179 smc->sk.sk_state == SMC_CLOSED) in smc_ioctl()
3182 answ = smc_tx_prepared_sends(&smc->conn); in smc_ioctl()
3185 if (smc->sk.sk_state == SMC_LISTEN) { in smc_ioctl()
3186 release_sock(&smc->sk); in smc_ioctl()
3189 if (smc->sk.sk_state == SMC_INIT || in smc_ioctl()
3190 smc->sk.sk_state == SMC_CLOSED) { in smc_ioctl()
3200 release_sock(&smc->sk); in smc_ioctl()
3203 release_sock(&smc->sk); in smc_ioctl()
3219 struct smc_sock *smc; in smc_splice_read() local
3222 smc = smc_sk(sk); in smc_splice_read()
3239 if (smc->use_fallback) { in smc_splice_read()
3240 rc = smc->clcsock->ops->splice_read(smc->clcsock, ppos, in smc_splice_read()
3251 SMC_STAT_INC(smc, splice_cnt); in smc_splice_read()
3252 rc = smc_rx_recvmsg(smc, NULL, pipe, len, flags); in smc_splice_read()
3286 struct smc_sock *smc; in __smc_create() local
3306 smc = smc_sk(sk); in __smc_create()
3307 smc->use_fallback = false; /* assume rdma capability first */ in __smc_create()
3308 smc->fallback_rsn = 0; in __smc_create()
3311 smc->limit_smc_hs = net->smc.limit_smc_hs; in __smc_create()
3316 &smc->clcsock); in __smc_create()
3322 /* smc_clcsock_release() does not wait smc->clcsock->sk's in __smc_create()
3324 * smc->sk is close()d, and TCP timers can be fired later, in __smc_create()
3327 sk = smc->clcsock->sk; in __smc_create()
3333 smc->clcsock = clcsock; in __smc_create()
3384 /* replace tcp socket to smc */ in smc_ulp_init()
3404 .name = "smc",
3598 MODULE_DESCRIPTION("smc socket address family");
3601 MODULE_ALIAS_TCP_ULP("smc");