Lines Matching full:smc
3 * Shared Memory Communications over RDMA (SMC-R) and RoCE
19 #define KMSG_COMPONENT "smc"
33 #include <net/smc.h>
40 #include "smc.h"
85 sock_net(skb->sk)->smc.limit_smc_hs)) in smc_nl_dump_hs_limitation()
99 sock_net(skb->sk)->smc.limit_smc_hs = true; in smc_nl_enable_hs_limitation()
105 sock_net(skb->sk)->smc.limit_smc_hs = false; in smc_nl_disable_hs_limitation()
111 struct smc_sock *smc = smc_sk(sk); in smc_set_keepalive() local
113 smc->clcsock->sk->sk_prot->keepalive(smc->clcsock->sk, val); in smc_set_keepalive()
123 struct smc_sock *smc; in smc_tcp_syn_recv_sock() local
126 smc = smc_clcsock_user_data(sk); in smc_tcp_syn_recv_sock()
128 if (READ_ONCE(sk->sk_ack_backlog) + atomic_read(&smc->queued_smc_hs) > in smc_tcp_syn_recv_sock()
132 if (sk_acceptq_is_full(&smc->sk)) { in smc_tcp_syn_recv_sock()
138 child = smc->ori_af_ops->syn_recv_sock(sk, skb, req, dst, req_unhash, in smc_tcp_syn_recv_sock()
140 /* child must not inherit smc or its ops */ in smc_tcp_syn_recv_sock()
146 inet_csk(child)->icsk_af_ops = smc->ori_af_ops; in smc_tcp_syn_recv_sock()
158 const struct smc_sock *smc; in smc_hs_congested() local
160 smc = smc_clcsock_user_data(sk); in smc_hs_congested()
162 if (!smc) in smc_hs_congested()
212 struct smc_sock *smc = smc_sk(sk); in smc_release_cb() local
214 if (smc->conn.tx_in_release_sock) { in smc_release_cb()
215 smc_tx_pending(&smc->conn); in smc_release_cb()
216 smc->conn.tx_in_release_sock = false; in smc_release_cb()
221 .name = "SMC",
246 static void smc_fback_restore_callbacks(struct smc_sock *smc) in smc_fback_restore_callbacks() argument
248 struct sock *clcsk = smc->clcsock->sk; in smc_fback_restore_callbacks()
253 smc_clcsock_restore_cb(&clcsk->sk_state_change, &smc->clcsk_state_change); in smc_fback_restore_callbacks()
254 smc_clcsock_restore_cb(&clcsk->sk_data_ready, &smc->clcsk_data_ready); in smc_fback_restore_callbacks()
255 smc_clcsock_restore_cb(&clcsk->sk_write_space, &smc->clcsk_write_space); in smc_fback_restore_callbacks()
256 smc_clcsock_restore_cb(&clcsk->sk_error_report, &smc->clcsk_error_report); in smc_fback_restore_callbacks()
261 static void smc_restore_fallback_changes(struct smc_sock *smc) in smc_restore_fallback_changes() argument
263 if (smc->clcsock->file) { /* non-accepted sockets have no file yet */ in smc_restore_fallback_changes()
264 smc->clcsock->file->private_data = smc->sk.sk_socket; in smc_restore_fallback_changes()
265 smc->clcsock->file = NULL; in smc_restore_fallback_changes()
266 smc_fback_restore_callbacks(smc); in smc_restore_fallback_changes()
270 static int __smc_release(struct smc_sock *smc) in __smc_release() argument
272 struct sock *sk = &smc->sk; in __smc_release()
275 if (!smc->use_fallback) { in __smc_release()
276 rc = smc_close_active(smc); in __smc_release()
286 rc = kernel_sock_shutdown(smc->clcsock, in __smc_release()
292 smc_restore_fallback_changes(smc); in __smc_release()
298 if (smc->clcsock) { in __smc_release()
300 smc_clcsock_release(smc); in __smc_release()
303 if (!smc->use_fallback) in __smc_release()
304 smc_conn_free(&smc->conn); in __smc_release()
313 struct smc_sock *smc; in smc_release() local
320 smc = smc_sk(sk); in smc_release()
325 if (smc->connect_nonblock && old_state == SMC_INIT) in smc_release()
326 tcp_abort(smc->clcsock->sk, ECONNABORTED); in smc_release()
328 if (cancel_work_sync(&smc->connect_work)) in smc_release()
329 sock_put(&smc->sk); /* sock_hold in smc_connect for passive closing */ in smc_release()
340 !smc->use_fallback) in smc_release()
341 smc_close_active_abort(smc); in smc_release()
343 rc = __smc_release(smc); in smc_release()
369 struct smc_sock *smc; in smc_sock_alloc() local
382 WRITE_ONCE(sk->sk_sndbuf, READ_ONCE(net->smc.sysctl_wmem)); in smc_sock_alloc()
383 WRITE_ONCE(sk->sk_rcvbuf, READ_ONCE(net->smc.sysctl_rmem)); in smc_sock_alloc()
384 smc = smc_sk(sk); in smc_sock_alloc()
385 INIT_WORK(&smc->tcp_listen_work, smc_tcp_listen_work); in smc_sock_alloc()
386 INIT_WORK(&smc->connect_work, smc_connect_work); in smc_sock_alloc()
387 INIT_DELAYED_WORK(&smc->conn.tx_work, smc_tx_work); in smc_sock_alloc()
388 INIT_LIST_HEAD(&smc->accept_q); in smc_sock_alloc()
389 spin_lock_init(&smc->accept_q_lock); in smc_sock_alloc()
390 spin_lock_init(&smc->conn.send_lock); in smc_sock_alloc()
393 mutex_init(&smc->clcsock_release_lock); in smc_sock_alloc()
394 smc_init_saved_callbacks(smc); in smc_sock_alloc()
404 struct smc_sock *smc; in smc_bind() local
407 smc = smc_sk(sk); in smc_bind()
428 if (sk->sk_state != SMC_INIT || smc->connect_nonblock) in smc_bind()
431 smc->clcsock->sk->sk_reuse = sk->sk_reuse; in smc_bind()
432 smc->clcsock->sk->sk_reuseport = sk->sk_reuseport; in smc_bind()
433 rc = kernel_bind(smc->clcsock, uaddr, addr_len); in smc_bind()
475 /* copy only relevant settings and flags of SOL_SOCKET level from smc to
476 * clc socket (since smc is not called for these options from net/core)
478 static void smc_copy_sock_settings_to_clc(struct smc_sock *smc) in smc_copy_sock_settings_to_clc() argument
480 smc_copy_sock_settings(smc->clcsock->sk, &smc->sk, SK_FLAGS_SMC_TO_CLC); in smc_copy_sock_settings_to_clc()
487 /* copy only settings and flags relevant for smc from clc to smc socket */
488 static void smc_copy_sock_settings_to_smc(struct smc_sock *smc) in smc_copy_sock_settings_to_smc() argument
490 smc_copy_sock_settings(&smc->sk, smc->clcsock->sk, SK_FLAGS_CLC_TO_SMC); in smc_copy_sock_settings_to_smc()
551 static int smcr_clnt_conf_first_link(struct smc_sock *smc) in smcr_clnt_conf_first_link() argument
553 struct smc_link *link = smc->conn.lnk; in smcr_clnt_conf_first_link()
563 rc = smc_clc_wait_msg(smc, &dclc, sizeof(dclc), in smcr_clnt_conf_first_link()
580 if (smc->conn.sndbuf_desc->is_vm) { in smcr_clnt_conf_first_link()
581 if (smcr_link_reg_buf(link, smc->conn.sndbuf_desc)) in smcr_clnt_conf_first_link()
586 if (smcr_link_reg_buf(link, smc->conn.rmb_desc)) in smcr_clnt_conf_first_link()
590 smc->conn.rmb_desc->is_conf_rkey = true; in smcr_clnt_conf_first_link()
606 rc = smc_clc_wait_msg(smc, &dclc, sizeof(dclc), in smcr_clnt_conf_first_link()
627 static void smc_conn_save_peer_info_fce(struct smc_sock *smc, in smc_conn_save_peer_info_fce() argument
639 if (smc->conn.lgr->is_smcd) { in smc_conn_save_peer_info_fce()
640 memcpy(smc->conn.lgr->negotiated_eid, clc_v2->d1.eid, in smc_conn_save_peer_info_fce()
645 memcpy(smc->conn.lgr->negotiated_eid, clc_v2->r1.eid, in smc_conn_save_peer_info_fce()
651 smc->conn.lgr->peer_os = fce->os_type; in smc_conn_save_peer_info_fce()
652 smc->conn.lgr->peer_smc_release = fce->release; in smc_conn_save_peer_info_fce()
654 memcpy(smc->conn.lgr->peer_hostname, fce->hostname, in smc_conn_save_peer_info_fce()
658 static void smcr_conn_save_peer_info(struct smc_sock *smc, in smcr_conn_save_peer_info() argument
663 smc->conn.peer_rmbe_idx = clc->r0.rmbe_idx; in smcr_conn_save_peer_info()
664 smc->conn.local_tx_ctrl.token = ntohl(clc->r0.rmbe_alert_token); in smcr_conn_save_peer_info()
665 smc->conn.peer_rmbe_size = bufsize; in smcr_conn_save_peer_info()
666 atomic_set(&smc->conn.peer_rmbe_space, smc->conn.peer_rmbe_size); in smcr_conn_save_peer_info()
667 smc->conn.tx_off = bufsize * (smc->conn.peer_rmbe_idx - 1); in smcr_conn_save_peer_info()
670 static void smcd_conn_save_peer_info(struct smc_sock *smc, in smcd_conn_save_peer_info() argument
675 smc->conn.peer_rmbe_idx = clc->d0.dmbe_idx; in smcd_conn_save_peer_info()
676 smc->conn.peer_token = clc->d0.token; in smcd_conn_save_peer_info()
678 smc->conn.peer_rmbe_size = bufsize - sizeof(struct smcd_cdc_msg); in smcd_conn_save_peer_info()
679 atomic_set(&smc->conn.peer_rmbe_space, smc->conn.peer_rmbe_size); in smcd_conn_save_peer_info()
680 smc->conn.tx_off = bufsize * smc->conn.peer_rmbe_idx; in smcd_conn_save_peer_info()
683 static void smc_conn_save_peer_info(struct smc_sock *smc, in smc_conn_save_peer_info() argument
686 if (smc->conn.lgr->is_smcd) in smc_conn_save_peer_info()
687 smcd_conn_save_peer_info(smc, clc); in smc_conn_save_peer_info()
689 smcr_conn_save_peer_info(smc, clc); in smc_conn_save_peer_info()
690 smc_conn_save_peer_info_fce(smc, clc); in smc_conn_save_peer_info()
704 static void smc_stat_inc_fback_rsn_cnt(struct smc_sock *smc, in smc_stat_inc_fback_rsn_cnt() argument
710 if (fback_arr[cnt].fback_code == smc->fallback_rsn) { in smc_stat_inc_fback_rsn_cnt()
715 fback_arr[cnt].fback_code = smc->fallback_rsn; in smc_stat_inc_fback_rsn_cnt()
722 static void smc_stat_fallback(struct smc_sock *smc) in smc_stat_fallback() argument
724 struct net *net = sock_net(&smc->sk); in smc_stat_fallback()
726 mutex_lock(&net->smc.mutex_fback_rsn); in smc_stat_fallback()
727 if (smc->listen_smc) { in smc_stat_fallback()
728 smc_stat_inc_fback_rsn_cnt(smc, net->smc.fback_rsn->srv); in smc_stat_fallback()
729 net->smc.fback_rsn->srv_fback_cnt++; in smc_stat_fallback()
731 smc_stat_inc_fback_rsn_cnt(smc, net->smc.fback_rsn->clnt); in smc_stat_fallback()
732 net->smc.fback_rsn->clnt_fback_cnt++; in smc_stat_fallback()
734 mutex_unlock(&net->smc.mutex_fback_rsn); in smc_stat_fallback()
738 static void smc_fback_wakeup_waitqueue(struct smc_sock *smc, void *key) in smc_fback_wakeup_waitqueue() argument
743 wq = rcu_dereference(smc->sk.sk_wq); in smc_fback_wakeup_waitqueue()
747 /* wake up smc sk->sk_wq */ in smc_fback_wakeup_waitqueue()
773 static void smc_fback_forward_wakeup(struct smc_sock *smc, struct sock *clcsk, in smc_fback_forward_wakeup() argument
790 smc_fback_wakeup_waitqueue(smc, mark.key); in smc_fback_forward_wakeup()
797 struct smc_sock *smc; in smc_fback_state_change() local
800 smc = smc_clcsock_user_data(clcsk); in smc_fback_state_change()
801 if (smc) in smc_fback_state_change()
802 smc_fback_forward_wakeup(smc, clcsk, in smc_fback_state_change()
803 smc->clcsk_state_change); in smc_fback_state_change()
809 struct smc_sock *smc; in smc_fback_data_ready() local
812 smc = smc_clcsock_user_data(clcsk); in smc_fback_data_ready()
813 if (smc) in smc_fback_data_ready()
814 smc_fback_forward_wakeup(smc, clcsk, in smc_fback_data_ready()
815 smc->clcsk_data_ready); in smc_fback_data_ready()
821 struct smc_sock *smc; in smc_fback_write_space() local
824 smc = smc_clcsock_user_data(clcsk); in smc_fback_write_space()
825 if (smc) in smc_fback_write_space()
826 smc_fback_forward_wakeup(smc, clcsk, in smc_fback_write_space()
827 smc->clcsk_write_space); in smc_fback_write_space()
833 struct smc_sock *smc; in smc_fback_error_report() local
836 smc = smc_clcsock_user_data(clcsk); in smc_fback_error_report()
837 if (smc) in smc_fback_error_report()
838 smc_fback_forward_wakeup(smc, clcsk, in smc_fback_error_report()
839 smc->clcsk_error_report); in smc_fback_error_report()
843 static void smc_fback_replace_callbacks(struct smc_sock *smc) in smc_fback_replace_callbacks() argument
845 struct sock *clcsk = smc->clcsock->sk; in smc_fback_replace_callbacks()
848 clcsk->sk_user_data = (void *)((uintptr_t)smc | SK_USER_DATA_NOCOPY); in smc_fback_replace_callbacks()
851 &smc->clcsk_state_change); in smc_fback_replace_callbacks()
853 &smc->clcsk_data_ready); in smc_fback_replace_callbacks()
855 &smc->clcsk_write_space); in smc_fback_replace_callbacks()
857 &smc->clcsk_error_report); in smc_fback_replace_callbacks()
862 static int smc_switch_to_fallback(struct smc_sock *smc, int reason_code) in smc_switch_to_fallback() argument
866 mutex_lock(&smc->clcsock_release_lock); in smc_switch_to_fallback()
867 if (!smc->clcsock) { in smc_switch_to_fallback()
872 smc->use_fallback = true; in smc_switch_to_fallback()
873 smc->fallback_rsn = reason_code; in smc_switch_to_fallback()
874 smc_stat_fallback(smc); in smc_switch_to_fallback()
875 trace_smc_switch_to_fallback(smc, reason_code); in smc_switch_to_fallback()
876 if (smc->sk.sk_socket && smc->sk.sk_socket->file) { in smc_switch_to_fallback()
877 smc->clcsock->file = smc->sk.sk_socket->file; in smc_switch_to_fallback()
878 smc->clcsock->file->private_data = smc->clcsock; in smc_switch_to_fallback()
879 smc->clcsock->wq.fasync_list = in smc_switch_to_fallback()
880 smc->sk.sk_socket->wq.fasync_list; in smc_switch_to_fallback()
883 * in smc sk->sk_wq and they should be woken up in smc_switch_to_fallback()
886 smc_fback_replace_callbacks(smc); in smc_switch_to_fallback()
889 mutex_unlock(&smc->clcsock_release_lock); in smc_switch_to_fallback()
894 static int smc_connect_fallback(struct smc_sock *smc, int reason_code) in smc_connect_fallback() argument
896 struct net *net = sock_net(&smc->sk); in smc_connect_fallback()
899 rc = smc_switch_to_fallback(smc, reason_code); in smc_connect_fallback()
901 this_cpu_inc(net->smc.smc_stats->clnt_hshake_err_cnt); in smc_connect_fallback()
902 if (smc->sk.sk_state == SMC_INIT) in smc_connect_fallback()
903 sock_put(&smc->sk); /* passive closing */ in smc_connect_fallback()
906 smc_copy_sock_settings_to_clc(smc); in smc_connect_fallback()
907 smc->connect_nonblock = 0; in smc_connect_fallback()
908 if (smc->sk.sk_state == SMC_INIT) in smc_connect_fallback()
909 smc->sk.sk_state = SMC_ACTIVE; in smc_connect_fallback()
914 static int smc_connect_decline_fallback(struct smc_sock *smc, int reason_code, in smc_connect_decline_fallback() argument
917 struct net *net = sock_net(&smc->sk); in smc_connect_decline_fallback()
921 this_cpu_inc(net->smc.smc_stats->clnt_hshake_err_cnt); in smc_connect_decline_fallback()
922 if (smc->sk.sk_state == SMC_INIT) in smc_connect_decline_fallback()
923 sock_put(&smc->sk); /* passive closing */ in smc_connect_decline_fallback()
927 rc = smc_clc_send_decline(smc, reason_code, version); in smc_connect_decline_fallback()
929 this_cpu_inc(net->smc.smc_stats->clnt_hshake_err_cnt); in smc_connect_decline_fallback()
930 if (smc->sk.sk_state == SMC_INIT) in smc_connect_decline_fallback()
931 sock_put(&smc->sk); /* passive closing */ in smc_connect_decline_fallback()
935 return smc_connect_fallback(smc, reason_code); in smc_connect_decline_fallback()
938 static void smc_conn_abort(struct smc_sock *smc, int local_first) in smc_conn_abort() argument
940 struct smc_connection *conn = &smc->conn; in smc_conn_abort()
954 static int smc_find_rdma_device(struct smc_sock *smc, struct smc_init_info *ini) in smc_find_rdma_device() argument
960 smc_pnet_find_roce_resource(smc->clcsock->sk, ini); in smc_find_rdma_device()
970 static int smc_find_ism_device(struct smc_sock *smc, struct smc_init_info *ini) in smc_find_ism_device() argument
973 smc_pnet_find_ism_resource(smc->clcsock->sk, ini); in smc_find_ism_device()
996 static int smc_find_ism_v2_device_clnt(struct smc_sock *smc, in smc_find_ism_v2_device_clnt() argument
1014 smc_pnet_is_ndev_pnetid(sock_net(&smc->sk), smcd->pnetid)) { in smc_find_ism_v2_device_clnt()
1033 static int smc_connect_ism_vlan_setup(struct smc_sock *smc, in smc_connect_ism_vlan_setup() argument
1041 static int smc_find_proposal_devices(struct smc_sock *smc, in smc_find_proposal_devices() argument
1048 smc_find_ism_device(smc, ini) || in smc_find_proposal_devices()
1049 smc_connect_ism_vlan_setup(smc, ini)) in smc_find_proposal_devices()
1055 smc_find_rdma_device(smc, ini)) in smc_find_proposal_devices()
1065 smc_find_ism_v2_device_clnt(smc, ini)) in smc_find_proposal_devices()
1070 ini->smcrv2.saddr = smc->clcsock->sk->sk_rcv_saddr; in smc_find_proposal_devices()
1072 smc->clcsock->sk->sk_family != AF_INET || in smc_find_proposal_devices()
1074 smc_find_rdma_device(smc, ini)) in smc_find_proposal_devices()
1091 static int smc_connect_ism_vlan_cleanup(struct smc_sock *smc, in smc_connect_ism_vlan_cleanup() argument
1107 static int smc_connect_clc(struct smc_sock *smc, in smc_connect_clc() argument
1114 rc = smc_clc_send_proposal(smc, ini); in smc_connect_clc()
1117 /* receive SMC Accept CLC message */ in smc_connect_clc()
1118 return smc_clc_wait_msg(smc, aclc2, SMC_CLC_MAX_ACCEPT_LEN, in smc_connect_clc()
1150 static int smc_connect_rdma_v2_prepare(struct smc_sock *smc, in smc_connect_rdma_v2_prepare() argument
1167 if (smc_ib_find_route(smc->clcsock->sk->sk_rcv_saddr, in smc_connect_rdma_v2_prepare()
1181 static int smc_connect_rdma(struct smc_sock *smc, in smc_connect_rdma() argument
1196 reason_code = smc_connect_rdma_v2_prepare(smc, aclc, ini); in smc_connect_rdma()
1201 reason_code = smc_conn_create(smc, ini); in smc_connect_rdma()
1207 smc_conn_save_peer_info(smc, aclc); in smc_connect_rdma()
1210 link = smc->conn.lnk; in smc_connect_rdma()
1215 struct smc_link *l = &smc->conn.lgr->lnk[i]; in smc_connect_rdma()
1231 smc_switch_link_and_count(&smc->conn, link); in smc_connect_rdma()
1235 if (smc_buf_create(smc, false)) { in smc_connect_rdma()
1243 if (smc_rmb_rtoken_handling(&smc->conn, link, aclc)) { in smc_connect_rdma()
1248 smc_close_init(smc); in smc_connect_rdma()
1249 smc_rx_init(smc); in smc_connect_rdma()
1258 if (smc->conn.sndbuf_desc->is_vm) { in smc_connect_rdma()
1259 if (smcr_lgr_reg_sndbufs(link, smc->conn.sndbuf_desc)) { in smc_connect_rdma()
1264 if (smcr_lgr_reg_rmbs(link, smc->conn.rmb_desc)) { in smc_connect_rdma()
1280 reason_code = smc_clc_send_confirm(smc, ini->first_contact_local, in smc_connect_rdma()
1285 smc_tx_init(smc); in smc_connect_rdma()
1290 reason_code = smcr_clnt_conf_first_link(smc); in smc_connect_rdma()
1297 smc_copy_sock_settings_to_clc(smc); in smc_connect_rdma()
1298 smc->connect_nonblock = 0; in smc_connect_rdma()
1299 if (smc->sk.sk_state == SMC_INIT) in smc_connect_rdma()
1300 smc->sk.sk_state = SMC_ACTIVE; in smc_connect_rdma()
1304 smc_conn_abort(smc, ini->first_contact_local); in smc_connect_rdma()
1306 smc->connect_nonblock = 0; in smc_connect_rdma()
1331 static int smc_connect_ism(struct smc_sock *smc, in smc_connect_ism() argument
1351 /* there is only one lgr role for SMC-D; use server lock */ in smc_connect_ism()
1353 rc = smc_conn_create(smc, ini); in smc_connect_ism()
1360 rc = smc_buf_create(smc, true); in smc_connect_ism()
1366 smc_conn_save_peer_info(smc, aclc); in smc_connect_ism()
1367 smc_close_init(smc); in smc_connect_ism()
1368 smc_rx_init(smc); in smc_connect_ism()
1369 smc_tx_init(smc); in smc_connect_ism()
1378 rc = smc_clc_send_confirm(smc, ini->first_contact_local, in smc_connect_ism()
1384 smc_copy_sock_settings_to_clc(smc); in smc_connect_ism()
1385 smc->connect_nonblock = 0; in smc_connect_ism()
1386 if (smc->sk.sk_state == SMC_INIT) in smc_connect_ism()
1387 smc->sk.sk_state = SMC_ACTIVE; in smc_connect_ism()
1391 smc_conn_abort(smc, ini->first_contact_local); in smc_connect_ism()
1393 smc->connect_nonblock = 0; in smc_connect_ism()
1424 static int __smc_connect(struct smc_sock *smc) in __smc_connect() argument
1433 if (smc->use_fallback) in __smc_connect()
1434 return smc_connect_fallback(smc, smc->fallback_rsn); in __smc_connect()
1436 /* if peer has not signalled SMC-capability, fall back */ in __smc_connect()
1437 if (!tcp_sk(smc->clcsock->sk)->syn_smc) in __smc_connect()
1438 return smc_connect_fallback(smc, SMC_CLC_DECL_PEERNOSMC); in __smc_connect()
1440 /* IPSec connections opt out of SMC optimizations */ in __smc_connect()
1441 if (using_ipsec(smc)) in __smc_connect()
1442 return smc_connect_decline_fallback(smc, SMC_CLC_DECL_IPSEC, in __smc_connect()
1447 return smc_connect_decline_fallback(smc, SMC_CLC_DECL_MEM, in __smc_connect()
1456 if (smc_vlan_by_tcpsk(smc->clcsock, ini)) { in __smc_connect()
1466 rc = smc_find_proposal_devices(smc, ini); in __smc_connect()
1479 rc = smc_connect_clc(smc, aclc2, ini); in __smc_connect()
1484 smc->sk.sk_err = ETIMEDOUT; in __smc_connect()
1489 /* check if smc modes and versions of CLC proposal and accept match */ in __smc_connect()
1498 rc = smc_connect_rdma(smc, aclc, ini); in __smc_connect()
1501 rc = smc_connect_ism(smc, aclc, ini); in __smc_connect()
1506 SMC_STAT_CLNT_SUCC_INC(sock_net(smc->clcsock->sk), aclc); in __smc_connect()
1507 smc_connect_ism_vlan_cleanup(smc, ini); in __smc_connect()
1513 smc_connect_ism_vlan_cleanup(smc, ini); in __smc_connect()
1517 return smc_connect_decline_fallback(smc, rc, version); in __smc_connect()
1522 struct smc_sock *smc = container_of(work, struct smc_sock, in smc_connect_work() local
1524 long timeo = smc->sk.sk_sndtimeo; in smc_connect_work()
1529 lock_sock(smc->clcsock->sk); in smc_connect_work()
1530 if (smc->clcsock->sk->sk_err) { in smc_connect_work()
1531 smc->sk.sk_err = smc->clcsock->sk->sk_err; in smc_connect_work()
1532 } else if ((1 << smc->clcsock->sk->sk_state) & in smc_connect_work()
1534 rc = sk_stream_wait_connect(smc->clcsock->sk, &timeo); in smc_connect_work()
1536 ((1 << smc->clcsock->sk->sk_state) & in smc_connect_work()
1540 release_sock(smc->clcsock->sk); in smc_connect_work()
1541 lock_sock(&smc->sk); in smc_connect_work()
1542 if (rc != 0 || smc->sk.sk_err) { in smc_connect_work()
1543 smc->sk.sk_state = SMC_CLOSED; in smc_connect_work()
1545 smc->sk.sk_err = EPIPE; in smc_connect_work()
1547 smc->sk.sk_err = ECONNREFUSED; in smc_connect_work()
1549 smc->sk.sk_err = -sock_intr_errno(timeo); in smc_connect_work()
1550 sock_put(&smc->sk); /* passive closing */ in smc_connect_work()
1554 rc = __smc_connect(smc); in smc_connect_work()
1556 smc->sk.sk_err = -rc; in smc_connect_work()
1559 if (!sock_flag(&smc->sk, SOCK_DEAD)) { in smc_connect_work()
1560 if (smc->sk.sk_err) { in smc_connect_work()
1561 smc->sk.sk_state_change(&smc->sk); in smc_connect_work()
1563 smc->clcsock->sk->sk_write_space(smc->clcsock->sk); in smc_connect_work()
1564 smc->sk.sk_write_space(&smc->sk); in smc_connect_work()
1567 release_sock(&smc->sk); in smc_connect_work()
1574 struct smc_sock *smc; in smc_connect() local
1577 smc = smc_sk(sk); in smc_connect()
1579 /* separate smc parameter checking to be safe */ in smc_connect()
1616 smc_copy_sock_settings_to_clc(smc); in smc_connect()
1617 tcp_sk(smc->clcsock->sk)->syn_smc = 1; in smc_connect()
1618 if (smc->connect_nonblock) { in smc_connect()
1622 rc = kernel_connect(smc->clcsock, addr, alen, flags); in smc_connect()
1626 if (smc->use_fallback) { in smc_connect()
1630 sock_hold(&smc->sk); /* sock put in passive closing */ in smc_connect()
1632 if (queue_work(smc_hs_wq, &smc->connect_work)) in smc_connect()
1633 smc->connect_nonblock = 1; in smc_connect()
1637 rc = __smc_connect(smc); in smc_connect()
1687 /* new clcsock has inherited the smc listen-specific sk_data_ready in smc_clcsock_accept()
1773 struct smc_sock *smc = smc_sk(sk); in smc_close_non_accepted() local
1780 __smc_release(smc); in smc_close_non_accepted()
1786 static int smcr_serv_conf_first_link(struct smc_sock *smc) in smcr_serv_conf_first_link() argument
1788 struct smc_link *link = smc->conn.lnk; in smcr_serv_conf_first_link()
1793 if (smc->conn.sndbuf_desc->is_vm) { in smcr_serv_conf_first_link()
1794 if (smcr_link_reg_buf(link, smc->conn.sndbuf_desc)) in smcr_serv_conf_first_link()
1799 if (smcr_link_reg_buf(link, smc->conn.rmb_desc)) in smcr_serv_conf_first_link()
1813 rc = smc_clc_wait_msg(smc, &dclc, sizeof(dclc), in smcr_serv_conf_first_link()
1824 smc->conn.rmb_desc->is_conf_rkey = true; in smcr_serv_conf_first_link()
1873 this_cpu_inc(net->smc.smc_stats->srv_hshake_err_cnt); in smc_listen_out_err()
1994 /* listen worker: initialize connection and buffers for SMC-D */
2338 /* check if peer is smc capable */ in smc_listen_work()
2349 * wait for and receive SMC Proposal CLC message in smc_listen_work()
2365 /* IPSec connections opt out of SMC optimizations */ in smc_listen_work()
2392 /* send SMC Accept CLC message */ in smc_listen_work()
2399 /* SMC-D does not need this lock any more */ in smc_listen_work()
2403 /* receive SMC Confirm CLC message */ in smc_listen_work()
2495 struct smc_sock *smc; in smc_listen() local
2498 smc = smc_sk(sk); in smc_listen()
2503 smc->connect_nonblock || sock->state != SS_UNCONNECTED) in smc_listen()
2512 * them to the clc socket -- copy smc socket options to clc socket in smc_listen()
2514 smc_copy_sock_settings_to_clc(smc); in smc_listen()
2515 if (!smc->use_fallback) in smc_listen()
2516 tcp_sk(smc->clcsock->sk)->syn_smc = 1; in smc_listen()
2519 * smc-specific sk_data_ready function in smc_listen()
2521 write_lock_bh(&smc->clcsock->sk->sk_callback_lock); in smc_listen()
2522 smc->clcsock->sk->sk_user_data = in smc_listen()
2523 (void *)((uintptr_t)smc | SK_USER_DATA_NOCOPY); in smc_listen()
2524 smc_clcsock_replace_cb(&smc->clcsock->sk->sk_data_ready, in smc_listen()
2525 smc_clcsock_data_ready, &smc->clcsk_data_ready); in smc_listen()
2526 write_unlock_bh(&smc->clcsock->sk->sk_callback_lock); in smc_listen()
2529 smc->ori_af_ops = inet_csk(smc->clcsock->sk)->icsk_af_ops; in smc_listen()
2531 smc->af_ops = *smc->ori_af_ops; in smc_listen()
2532 smc->af_ops.syn_recv_sock = smc_tcp_syn_recv_sock; in smc_listen()
2534 inet_csk(smc->clcsock->sk)->icsk_af_ops = &smc->af_ops; in smc_listen()
2536 if (smc->limit_smc_hs) in smc_listen()
2537 tcp_sk(smc->clcsock->sk)->smc_hs_congested = smc_hs_congested; in smc_listen()
2539 rc = kernel_listen(smc->clcsock, backlog); in smc_listen()
2541 write_lock_bh(&smc->clcsock->sk->sk_callback_lock); in smc_listen()
2542 smc_clcsock_restore_cb(&smc->clcsock->sk->sk_data_ready, in smc_listen()
2543 &smc->clcsk_data_ready); in smc_listen()
2544 smc->clcsock->sk->sk_user_data = NULL; in smc_listen()
2545 write_unlock_bh(&smc->clcsock->sk->sk_callback_lock); in smc_listen()
2630 struct smc_sock *smc; in smc_getname() local
2636 smc = smc_sk(sock->sk); in smc_getname()
2638 return smc->clcsock->ops->getname(smc->clcsock, addr, peer); in smc_getname()
2644 struct smc_sock *smc; in smc_sendmsg() local
2647 smc = smc_sk(sk); in smc_sendmsg()
2655 if (sk->sk_state == SMC_INIT && !smc->connect_nonblock) { in smc_sendmsg()
2656 rc = smc_switch_to_fallback(smc, SMC_CLC_DECL_OPTUNSUPP); in smc_sendmsg()
2665 if (smc->use_fallback) { in smc_sendmsg()
2666 rc = smc->clcsock->ops->sendmsg(smc->clcsock, msg, len); in smc_sendmsg()
2668 rc = smc_tx_sendmsg(smc, msg, len); in smc_sendmsg()
2669 SMC_STAT_TX_PAYLOAD(smc, len, rc); in smc_sendmsg()
2680 struct smc_sock *smc; in smc_recvmsg() local
2683 smc = smc_sk(sk); in smc_recvmsg()
2700 if (smc->use_fallback) { in smc_recvmsg()
2701 rc = smc->clcsock->ops->recvmsg(smc->clcsock, msg, len, flags); in smc_recvmsg()
2704 rc = smc_rx_recvmsg(smc, msg, NULL, len, flags); in smc_recvmsg()
2705 SMC_STAT_RX_PAYLOAD(smc, rc, rc); in smc_recvmsg()
2730 struct smc_sock *smc; in smc_poll() local
2736 smc = smc_sk(sock->sk); in smc_poll()
2737 if (smc->use_fallback) { in smc_poll()
2739 mask = smc->clcsock->ops->poll(file, smc->clcsock, wait); in smc_poll()
2740 sk->sk_err = smc->clcsock->sk->sk_err; in smc_poll()
2752 } else if (smc->use_fallback) { /* as result of connect_work()*/ in smc_poll()
2753 mask |= smc->clcsock->ops->poll(file, smc->clcsock, in smc_poll()
2755 sk->sk_err = smc->clcsock->sk->sk_err; in smc_poll()
2758 atomic_read(&smc->conn.sndbuf_space)) || in smc_poll()
2765 if (atomic_read(&smc->conn.bytes_to_rcv)) in smc_poll()
2771 if (smc->conn.urg_state == SMC_URG_VALID) in smc_poll()
2783 struct smc_sock *smc; in smc_shutdown() local
2788 smc = smc_sk(sk); in smc_shutdown()
2814 if (smc->use_fallback) { in smc_shutdown()
2815 rc = kernel_sock_shutdown(smc->clcsock, how); in smc_shutdown()
2816 sk->sk_shutdown = smc->clcsock->sk->sk_shutdown; in smc_shutdown()
2827 rc = smc_close_active(smc); in smc_shutdown()
2833 rc = smc_close_shutdown_write(smc); in smc_shutdown()
2840 if (do_shutdown && smc->clcsock) in smc_shutdown()
2841 rc1 = kernel_sock_shutdown(smc->clcsock, how); in smc_shutdown()
2857 struct smc_sock *smc; in __smc_getsockopt() local
2860 smc = smc_sk(sock->sk); in __smc_getsockopt()
2872 val = smc->limit_smc_hs; in __smc_getsockopt()
2890 struct smc_sock *smc; in __smc_setsockopt() local
2893 smc = smc_sk(sk); in __smc_setsockopt()
2907 smc->limit_smc_hs = !!val; in __smc_setsockopt()
2923 struct smc_sock *smc; in smc_setsockopt() local
2931 smc = smc_sk(sk); in smc_setsockopt()
2936 mutex_lock(&smc->clcsock_release_lock); in smc_setsockopt()
2937 if (!smc->clcsock) { in smc_setsockopt()
2938 mutex_unlock(&smc->clcsock_release_lock); in smc_setsockopt()
2941 if (unlikely(!smc->clcsock->ops->setsockopt)) in smc_setsockopt()
2944 rc = smc->clcsock->ops->setsockopt(smc->clcsock, level, optname, in smc_setsockopt()
2946 if (smc->clcsock->sk->sk_err) { in smc_setsockopt()
2947 sk->sk_err = smc->clcsock->sk->sk_err; in smc_setsockopt()
2950 mutex_unlock(&smc->clcsock_release_lock); in smc_setsockopt()
2958 if (rc || smc->use_fallback) in smc_setsockopt()
2965 /* option not supported by SMC */ in smc_setsockopt()
2966 if (sk->sk_state == SMC_INIT && !smc->connect_nonblock) { in smc_setsockopt()
2967 rc = smc_switch_to_fallback(smc, SMC_CLC_DECL_OPTUNSUPP); in smc_setsockopt()
2977 SMC_STAT_INC(smc, ndly_cnt); in smc_setsockopt()
2978 smc_tx_pending(&smc->conn); in smc_setsockopt()
2979 cancel_delayed_work(&smc->conn.tx_work); in smc_setsockopt()
2988 SMC_STAT_INC(smc, cork_cnt); in smc_setsockopt()
2989 smc_tx_pending(&smc->conn); in smc_setsockopt()
2990 cancel_delayed_work(&smc->conn.tx_work); in smc_setsockopt()
2995 smc->sockopt_defer_accept = val; in smc_setsockopt()
3009 struct smc_sock *smc; in smc_getsockopt() local
3015 smc = smc_sk(sock->sk); in smc_getsockopt()
3016 mutex_lock(&smc->clcsock_release_lock); in smc_getsockopt()
3017 if (!smc->clcsock) { in smc_getsockopt()
3018 mutex_unlock(&smc->clcsock_release_lock); in smc_getsockopt()
3022 if (unlikely(!smc->clcsock->ops->getsockopt)) { in smc_getsockopt()
3023 mutex_unlock(&smc->clcsock_release_lock); in smc_getsockopt()
3026 rc = smc->clcsock->ops->getsockopt(smc->clcsock, level, optname, in smc_getsockopt()
3028 mutex_unlock(&smc->clcsock_release_lock); in smc_getsockopt()
3037 struct smc_sock *smc; in smc_ioctl() local
3040 smc = smc_sk(sock->sk); in smc_ioctl()
3041 conn = &smc->conn; in smc_ioctl()
3042 lock_sock(&smc->sk); in smc_ioctl()
3043 if (smc->use_fallback) { in smc_ioctl()
3044 if (!smc->clcsock) { in smc_ioctl()
3045 release_sock(&smc->sk); in smc_ioctl()
3048 answ = smc->clcsock->ops->ioctl(smc->clcsock, cmd, arg); in smc_ioctl()
3049 release_sock(&smc->sk); in smc_ioctl()
3054 if (smc->sk.sk_state == SMC_LISTEN) { in smc_ioctl()
3055 release_sock(&smc->sk); in smc_ioctl()
3058 if (smc->sk.sk_state == SMC_INIT || in smc_ioctl()
3059 smc->sk.sk_state == SMC_CLOSED) in smc_ioctl()
3062 answ = atomic_read(&smc->conn.bytes_to_rcv); in smc_ioctl()
3066 if (smc->sk.sk_state == SMC_LISTEN) { in smc_ioctl()
3067 release_sock(&smc->sk); in smc_ioctl()
3070 if (smc->sk.sk_state == SMC_INIT || in smc_ioctl()
3071 smc->sk.sk_state == SMC_CLOSED) in smc_ioctl()
3074 answ = smc->conn.sndbuf_desc->len - in smc_ioctl()
3075 atomic_read(&smc->conn.sndbuf_space); in smc_ioctl()
3079 if (smc->sk.sk_state == SMC_LISTEN) { in smc_ioctl()
3080 release_sock(&smc->sk); in smc_ioctl()
3083 if (smc->sk.sk_state == SMC_INIT || in smc_ioctl()
3084 smc->sk.sk_state == SMC_CLOSED) in smc_ioctl()
3087 answ = smc_tx_prepared_sends(&smc->conn); in smc_ioctl()
3090 if (smc->sk.sk_state == SMC_LISTEN) { in smc_ioctl()
3091 release_sock(&smc->sk); in smc_ioctl()
3094 if (smc->sk.sk_state == SMC_INIT || in smc_ioctl()
3095 smc->sk.sk_state == SMC_CLOSED) { in smc_ioctl()
3105 release_sock(&smc->sk); in smc_ioctl()
3108 release_sock(&smc->sk); in smc_ioctl()
3117 struct smc_sock *smc; in smc_sendpage() local
3120 smc = smc_sk(sk); in smc_sendpage()
3127 if (smc->use_fallback) { in smc_sendpage()
3128 rc = kernel_sendpage(smc->clcsock, page, offset, in smc_sendpage()
3132 rc = smc_tx_sendpage(smc, page, offset, size, flags); in smc_sendpage()
3134 SMC_STAT_INC(smc, sendpage_cnt); in smc_sendpage()
3152 struct smc_sock *smc; in smc_splice_read() local
3155 smc = smc_sk(sk); in smc_splice_read()
3172 if (smc->use_fallback) { in smc_splice_read()
3173 rc = smc->clcsock->ops->splice_read(smc->clcsock, ppos, in smc_splice_read()
3184 SMC_STAT_INC(smc, splice_cnt); in smc_splice_read()
3185 rc = smc_rx_recvmsg(smc, NULL, pipe, len, flags); in smc_splice_read()
3220 struct smc_sock *smc; in __smc_create() local
3240 smc = smc_sk(sk); in __smc_create()
3241 smc->use_fallback = false; /* assume rdma capability first */ in __smc_create()
3242 smc->fallback_rsn = 0; in __smc_create()
3245 smc->limit_smc_hs = net->smc.limit_smc_hs; in __smc_create()
3250 &smc->clcsock); in __smc_create()
3256 smc->clcsock = clcsock; in __smc_create()
3307 /* replace tcp socket to smc */ in smc_ulp_init()
3327 .name = "smc",
3515 MODULE_DESCRIPTION("smc socket address family");
3518 MODULE_ALIAS_TCP_ULP("smc");