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"
69 struct smc_sock *smc = smc_sk(sk); in smc_set_keepalive() local
71 smc->clcsock->sk->sk_prot->keepalive(smc->clcsock->sk, val); in smc_set_keepalive()
110 .name = "SMC",
133 static void smc_restore_fallback_changes(struct smc_sock *smc) in smc_restore_fallback_changes() argument
135 if (smc->clcsock->file) { /* non-accepted sockets have no file yet */ in smc_restore_fallback_changes()
136 smc->clcsock->file->private_data = smc->sk.sk_socket; in smc_restore_fallback_changes()
137 smc->clcsock->file = NULL; in smc_restore_fallback_changes()
141 static int __smc_release(struct smc_sock *smc) in __smc_release() argument
143 struct sock *sk = &smc->sk; in __smc_release()
146 if (!smc->use_fallback) { in __smc_release()
147 rc = smc_close_active(smc); in __smc_release()
155 rc = kernel_sock_shutdown(smc->clcsock, SHUT_RDWR); in __smc_release()
159 smc_restore_fallback_changes(smc); in __smc_release()
165 if (smc->clcsock) { in __smc_release()
167 smc_clcsock_release(smc); in __smc_release()
170 if (!smc->use_fallback) in __smc_release()
171 smc_conn_free(&smc->conn); in __smc_release()
180 struct smc_sock *smc; in smc_release() local
187 smc = smc_sk(sk); in smc_release()
190 if (smc->connect_nonblock && sk->sk_state == SMC_INIT) in smc_release()
191 tcp_abort(smc->clcsock->sk, ECONNABORTED); in smc_release()
192 flush_work(&smc->connect_work); in smc_release()
202 rc = __smc_release(smc); in smc_release()
228 struct smc_sock *smc; in smc_sock_alloc() local
241 smc = smc_sk(sk); in smc_sock_alloc()
242 INIT_WORK(&smc->tcp_listen_work, smc_tcp_listen_work); in smc_sock_alloc()
243 INIT_WORK(&smc->connect_work, smc_connect_work); in smc_sock_alloc()
244 INIT_DELAYED_WORK(&smc->conn.tx_work, smc_tx_work); in smc_sock_alloc()
245 INIT_LIST_HEAD(&smc->accept_q); in smc_sock_alloc()
246 spin_lock_init(&smc->accept_q_lock); in smc_sock_alloc()
247 spin_lock_init(&smc->conn.send_lock); in smc_sock_alloc()
250 mutex_init(&smc->clcsock_release_lock); in smc_sock_alloc()
260 struct smc_sock *smc; in smc_bind() local
263 smc = smc_sk(sk); in smc_bind()
284 if (sk->sk_state != SMC_INIT || smc->connect_nonblock) in smc_bind()
287 smc->clcsock->sk->sk_reuse = sk->sk_reuse; in smc_bind()
288 rc = kernel_bind(smc->clcsock, uaddr, addr_len); in smc_bind()
330 /* copy only relevant settings and flags of SOL_SOCKET level from smc to
331 * clc socket (since smc is not called for these options from net/core)
333 static void smc_copy_sock_settings_to_clc(struct smc_sock *smc) in smc_copy_sock_settings_to_clc() argument
335 smc_copy_sock_settings(smc->clcsock->sk, &smc->sk, SK_FLAGS_SMC_TO_CLC); in smc_copy_sock_settings_to_clc()
342 /* copy only settings and flags relevant for smc from clc to smc socket */
343 static void smc_copy_sock_settings_to_smc(struct smc_sock *smc) in smc_copy_sock_settings_to_smc() argument
345 smc_copy_sock_settings(&smc->sk, smc->clcsock->sk, SK_FLAGS_CLC_TO_SMC); in smc_copy_sock_settings_to_smc()
383 static int smcr_clnt_conf_first_link(struct smc_sock *smc) in smcr_clnt_conf_first_link() argument
385 struct smc_link *link = smc->conn.lnk; in smcr_clnt_conf_first_link()
395 rc = smc_clc_wait_msg(smc, &dclc, sizeof(dclc), in smcr_clnt_conf_first_link()
411 if (smcr_link_reg_rmb(link, smc->conn.rmb_desc)) in smcr_clnt_conf_first_link()
415 smc->conn.rmb_desc->is_conf_rkey = true; in smcr_clnt_conf_first_link()
431 rc = smc_clc_wait_msg(smc, &dclc, sizeof(dclc), in smcr_clnt_conf_first_link()
442 static void smcr_conn_save_peer_info(struct smc_sock *smc, in smcr_conn_save_peer_info() argument
447 smc->conn.peer_rmbe_idx = clc->r0.rmbe_idx; in smcr_conn_save_peer_info()
448 smc->conn.local_tx_ctrl.token = ntohl(clc->r0.rmbe_alert_token); in smcr_conn_save_peer_info()
449 smc->conn.peer_rmbe_size = bufsize; in smcr_conn_save_peer_info()
450 atomic_set(&smc->conn.peer_rmbe_space, smc->conn.peer_rmbe_size); in smcr_conn_save_peer_info()
451 smc->conn.tx_off = bufsize * (smc->conn.peer_rmbe_idx - 1); in smcr_conn_save_peer_info()
464 static void smcd_conn_save_peer_info(struct smc_sock *smc, in smcd_conn_save_peer_info() argument
469 smc->conn.peer_rmbe_idx = clc->d0.dmbe_idx; in smcd_conn_save_peer_info()
470 smc->conn.peer_token = clc->d0.token; in smcd_conn_save_peer_info()
472 smc->conn.peer_rmbe_size = bufsize - sizeof(struct smcd_cdc_msg); in smcd_conn_save_peer_info()
473 atomic_set(&smc->conn.peer_rmbe_space, smc->conn.peer_rmbe_size); in smcd_conn_save_peer_info()
474 smc->conn.tx_off = bufsize * smc->conn.peer_rmbe_idx; in smcd_conn_save_peer_info()
483 memcpy(smc->conn.lgr->negotiated_eid, clc_v2->eid, in smcd_conn_save_peer_info()
485 smc->conn.lgr->peer_os = fce->os_type; in smcd_conn_save_peer_info()
486 smc->conn.lgr->peer_smc_release = fce->release; in smcd_conn_save_peer_info()
488 memcpy(smc->conn.lgr->peer_hostname, fce->hostname, in smcd_conn_save_peer_info()
493 static void smc_conn_save_peer_info(struct smc_sock *smc, in smc_conn_save_peer_info() argument
496 if (smc->conn.lgr->is_smcd) in smc_conn_save_peer_info()
497 smcd_conn_save_peer_info(smc, clc); in smc_conn_save_peer_info()
499 smcr_conn_save_peer_info(smc, clc); in smc_conn_save_peer_info()
512 static void smc_stat_inc_fback_rsn_cnt(struct smc_sock *smc, in smc_stat_inc_fback_rsn_cnt() argument
518 if (fback_arr[cnt].fback_code == smc->fallback_rsn) { in smc_stat_inc_fback_rsn_cnt()
523 fback_arr[cnt].fback_code = smc->fallback_rsn; in smc_stat_inc_fback_rsn_cnt()
530 static void smc_stat_fallback(struct smc_sock *smc) in smc_stat_fallback() argument
532 struct net *net = sock_net(&smc->sk); in smc_stat_fallback()
534 mutex_lock(&net->smc.mutex_fback_rsn); in smc_stat_fallback()
535 if (smc->listen_smc) { in smc_stat_fallback()
536 smc_stat_inc_fback_rsn_cnt(smc, net->smc.fback_rsn->srv); in smc_stat_fallback()
537 net->smc.fback_rsn->srv_fback_cnt++; in smc_stat_fallback()
539 smc_stat_inc_fback_rsn_cnt(smc, net->smc.fback_rsn->clnt); in smc_stat_fallback()
540 net->smc.fback_rsn->clnt_fback_cnt++; in smc_stat_fallback()
542 mutex_unlock(&net->smc.mutex_fback_rsn); in smc_stat_fallback()
545 static void smc_switch_to_fallback(struct smc_sock *smc, int reason_code) in smc_switch_to_fallback() argument
547 smc->use_fallback = true; in smc_switch_to_fallback()
548 smc->fallback_rsn = reason_code; in smc_switch_to_fallback()
549 smc_stat_fallback(smc); in smc_switch_to_fallback()
550 if (smc->sk.sk_socket && smc->sk.sk_socket->file) { in smc_switch_to_fallback()
551 smc->clcsock->file = smc->sk.sk_socket->file; in smc_switch_to_fallback()
552 smc->clcsock->file->private_data = smc->clcsock; in smc_switch_to_fallback()
553 smc->clcsock->wq.fasync_list = in smc_switch_to_fallback()
554 smc->sk.sk_socket->wq.fasync_list; in smc_switch_to_fallback()
559 static int smc_connect_fallback(struct smc_sock *smc, int reason_code) in smc_connect_fallback() argument
561 smc_switch_to_fallback(smc, reason_code); in smc_connect_fallback()
562 smc_copy_sock_settings_to_clc(smc); in smc_connect_fallback()
563 smc->connect_nonblock = 0; in smc_connect_fallback()
564 if (smc->sk.sk_state == SMC_INIT) in smc_connect_fallback()
565 smc->sk.sk_state = SMC_ACTIVE; in smc_connect_fallback()
570 static int smc_connect_decline_fallback(struct smc_sock *smc, int reason_code, in smc_connect_decline_fallback() argument
573 struct net *net = sock_net(&smc->sk); in smc_connect_decline_fallback()
577 this_cpu_inc(net->smc.smc_stats->clnt_hshake_err_cnt); in smc_connect_decline_fallback()
578 if (smc->sk.sk_state == SMC_INIT) in smc_connect_decline_fallback()
579 sock_put(&smc->sk); /* passive closing */ in smc_connect_decline_fallback()
583 rc = smc_clc_send_decline(smc, reason_code, version); in smc_connect_decline_fallback()
585 this_cpu_inc(net->smc.smc_stats->clnt_hshake_err_cnt); in smc_connect_decline_fallback()
586 if (smc->sk.sk_state == SMC_INIT) in smc_connect_decline_fallback()
587 sock_put(&smc->sk); /* passive closing */ in smc_connect_decline_fallback()
591 return smc_connect_fallback(smc, reason_code); in smc_connect_decline_fallback()
594 static void smc_conn_abort(struct smc_sock *smc, int local_first) in smc_conn_abort() argument
597 smc_lgr_cleanup_early(&smc->conn); in smc_conn_abort()
599 smc_conn_free(&smc->conn); in smc_conn_abort()
604 static int smc_find_rdma_device(struct smc_sock *smc, struct smc_init_info *ini) in smc_find_rdma_device() argument
610 smc_pnet_find_roce_resource(smc->clcsock->sk, ini); in smc_find_rdma_device()
618 static int smc_find_ism_device(struct smc_sock *smc, struct smc_init_info *ini) in smc_find_ism_device() argument
621 smc_pnet_find_ism_resource(smc->clcsock->sk, ini); in smc_find_ism_device()
644 static int smc_find_ism_v2_device_clnt(struct smc_sock *smc, in smc_find_ism_v2_device_clnt() argument
662 smc_pnet_is_ndev_pnetid(sock_net(&smc->sk), smcd->pnetid)) { in smc_find_ism_v2_device_clnt()
681 static int smc_connect_ism_vlan_setup(struct smc_sock *smc, in smc_connect_ism_vlan_setup() argument
689 static int smc_find_proposal_devices(struct smc_sock *smc, in smc_find_proposal_devices() argument
696 if (smc_find_ism_device(smc, ini) || in smc_find_proposal_devices()
697 smc_connect_ism_vlan_setup(smc, ini)) { in smc_find_proposal_devices()
703 if (smc_find_rdma_device(smc, ini)) { in smc_find_proposal_devices()
710 if (smc_ism_is_v2_capable() && smc_find_ism_v2_device_clnt(smc, ini)) in smc_find_proposal_devices()
724 static int smc_connect_ism_vlan_cleanup(struct smc_sock *smc, in smc_connect_ism_vlan_cleanup() argument
740 static int smc_connect_clc(struct smc_sock *smc, in smc_connect_clc() argument
747 rc = smc_clc_send_proposal(smc, ini); in smc_connect_clc()
750 /* receive SMC Accept CLC message */ in smc_connect_clc()
751 return smc_clc_wait_msg(smc, aclc2, SMC_CLC_MAX_ACCEPT_LEN, in smc_connect_clc()
756 static int smc_connect_rdma(struct smc_sock *smc, in smc_connect_rdma() argument
769 reason_code = smc_conn_create(smc, ini); in smc_connect_rdma()
775 smc_conn_save_peer_info(smc, aclc); in smc_connect_rdma()
778 link = smc->conn.lnk; in smc_connect_rdma()
783 struct smc_link *l = &smc->conn.lgr->lnk[i]; in smc_connect_rdma()
798 smc_switch_link_and_count(&smc->conn, link); in smc_connect_rdma()
802 if (smc_buf_create(smc, false)) { in smc_connect_rdma()
810 if (smc_rmb_rtoken_handling(&smc->conn, link, aclc)) { in smc_connect_rdma()
815 smc_close_init(smc); in smc_connect_rdma()
816 smc_rx_init(smc); in smc_connect_rdma()
824 if (smcr_lgr_reg_rmbs(link, smc->conn.rmb_desc)) { in smc_connect_rdma()
829 smc_rmb_sync_sg_for_device(&smc->conn); in smc_connect_rdma()
831 reason_code = smc_clc_send_confirm(smc, ini->first_contact_local, in smc_connect_rdma()
836 smc_tx_init(smc); in smc_connect_rdma()
841 reason_code = smcr_clnt_conf_first_link(smc); in smc_connect_rdma()
848 smc_copy_sock_settings_to_clc(smc); in smc_connect_rdma()
849 smc->connect_nonblock = 0; in smc_connect_rdma()
850 if (smc->sk.sk_state == SMC_INIT) in smc_connect_rdma()
851 smc->sk.sk_state = SMC_ACTIVE; in smc_connect_rdma()
855 smc_conn_abort(smc, ini->first_contact_local); in smc_connect_rdma()
857 smc->connect_nonblock = 0; in smc_connect_rdma()
882 static int smc_connect_ism(struct smc_sock *smc, in smc_connect_ism() argument
901 /* there is only one lgr role for SMC-D; use server lock */ in smc_connect_ism()
903 rc = smc_conn_create(smc, ini); in smc_connect_ism()
910 rc = smc_buf_create(smc, true); in smc_connect_ism()
916 smc_conn_save_peer_info(smc, aclc); in smc_connect_ism()
917 smc_close_init(smc); in smc_connect_ism()
918 smc_rx_init(smc); in smc_connect_ism()
919 smc_tx_init(smc); in smc_connect_ism()
921 rc = smc_clc_send_confirm(smc, ini->first_contact_local, in smc_connect_ism()
927 smc_copy_sock_settings_to_clc(smc); in smc_connect_ism()
928 smc->connect_nonblock = 0; in smc_connect_ism()
929 if (smc->sk.sk_state == SMC_INIT) in smc_connect_ism()
930 smc->sk.sk_state = SMC_ACTIVE; in smc_connect_ism()
934 smc_conn_abort(smc, ini->first_contact_local); in smc_connect_ism()
936 smc->connect_nonblock = 0; in smc_connect_ism()
960 static int __smc_connect(struct smc_sock *smc) in __smc_connect() argument
969 if (smc->use_fallback) in __smc_connect()
970 return smc_connect_fallback(smc, smc->fallback_rsn); in __smc_connect()
972 /* if peer has not signalled SMC-capability, fall back */ in __smc_connect()
973 if (!tcp_sk(smc->clcsock->sk)->syn_smc) in __smc_connect()
974 return smc_connect_fallback(smc, SMC_CLC_DECL_PEERNOSMC); in __smc_connect()
976 /* IPSec connections opt out of SMC optimizations */ in __smc_connect()
977 if (using_ipsec(smc)) in __smc_connect()
978 return smc_connect_decline_fallback(smc, SMC_CLC_DECL_IPSEC, in __smc_connect()
983 return smc_connect_decline_fallback(smc, SMC_CLC_DECL_MEM, in __smc_connect()
992 if (smc_vlan_by_tcpsk(smc->clcsock, ini)) { in __smc_connect()
1001 rc = smc_find_proposal_devices(smc, ini); in __smc_connect()
1014 rc = smc_connect_clc(smc, aclc2, ini); in __smc_connect()
1018 /* check if smc modes and versions of CLC proposal and accept match */ in __smc_connect()
1027 rc = smc_connect_rdma(smc, aclc, ini); in __smc_connect()
1029 rc = smc_connect_ism(smc, aclc, ini); in __smc_connect()
1033 SMC_STAT_CLNT_SUCC_INC(sock_net(smc->clcsock->sk), aclc); in __smc_connect()
1034 smc_connect_ism_vlan_cleanup(smc, ini); in __smc_connect()
1040 smc_connect_ism_vlan_cleanup(smc, ini); in __smc_connect()
1044 return smc_connect_decline_fallback(smc, rc, version); in __smc_connect()
1049 struct smc_sock *smc = container_of(work, struct smc_sock, in smc_connect_work() local
1051 long timeo = smc->sk.sk_sndtimeo; in smc_connect_work()
1056 lock_sock(smc->clcsock->sk); in smc_connect_work()
1057 if (smc->clcsock->sk->sk_err) { in smc_connect_work()
1058 smc->sk.sk_err = smc->clcsock->sk->sk_err; in smc_connect_work()
1059 } else if ((1 << smc->clcsock->sk->sk_state) & in smc_connect_work()
1061 rc = sk_stream_wait_connect(smc->clcsock->sk, &timeo); in smc_connect_work()
1063 ((1 << smc->clcsock->sk->sk_state) & in smc_connect_work()
1067 release_sock(smc->clcsock->sk); in smc_connect_work()
1068 lock_sock(&smc->sk); in smc_connect_work()
1069 if (rc != 0 || smc->sk.sk_err) { in smc_connect_work()
1070 smc->sk.sk_state = SMC_CLOSED; in smc_connect_work()
1072 smc->sk.sk_err = EPIPE; in smc_connect_work()
1074 smc->sk.sk_err = -sock_intr_errno(timeo); in smc_connect_work()
1075 sock_put(&smc->sk); /* passive closing */ in smc_connect_work()
1079 rc = __smc_connect(smc); in smc_connect_work()
1081 smc->sk.sk_err = -rc; in smc_connect_work()
1084 if (!sock_flag(&smc->sk, SOCK_DEAD)) { in smc_connect_work()
1085 if (smc->sk.sk_err) { in smc_connect_work()
1086 smc->sk.sk_state_change(&smc->sk); in smc_connect_work()
1088 smc->clcsock->sk->sk_write_space(smc->clcsock->sk); in smc_connect_work()
1089 smc->sk.sk_write_space(&smc->sk); in smc_connect_work()
1092 release_sock(&smc->sk); in smc_connect_work()
1099 struct smc_sock *smc; in smc_connect() local
1102 smc = smc_sk(sk); in smc_connect()
1104 /* separate smc parameter checking to be safe */ in smc_connect()
1121 smc_copy_sock_settings_to_clc(smc); in smc_connect()
1122 tcp_sk(smc->clcsock->sk)->syn_smc = 1; in smc_connect()
1123 if (smc->connect_nonblock) { in smc_connect()
1127 rc = kernel_connect(smc->clcsock, addr, alen, flags); in smc_connect()
1131 sock_hold(&smc->sk); /* sock put in passive closing */ in smc_connect()
1132 if (smc->use_fallback) in smc_connect()
1135 if (queue_work(smc_hs_wq, &smc->connect_work)) in smc_connect()
1136 smc->connect_nonblock = 1; in smc_connect()
1139 rc = __smc_connect(smc); in smc_connect()
1188 /* new clcsock has inherited the smc listen-specific sk_data_ready in smc_clcsock_accept()
1260 struct smc_sock *smc = smc_sk(sk); in smc_close_non_accepted() local
1267 __smc_release(smc); in smc_close_non_accepted()
1273 static int smcr_serv_conf_first_link(struct smc_sock *smc) in smcr_serv_conf_first_link() argument
1275 struct smc_link *link = smc->conn.lnk; in smcr_serv_conf_first_link()
1279 if (smcr_link_reg_rmb(link, smc->conn.rmb_desc)) in smcr_serv_conf_first_link()
1293 rc = smc_clc_wait_msg(smc, &dclc, sizeof(dclc), in smcr_serv_conf_first_link()
1304 smc->conn.rmb_desc->is_conf_rkey = true; in smcr_serv_conf_first_link()
1351 this_cpu_inc(net->smc.smc_stats->srv_hshake_err_cnt); in smc_listen_out_err()
1456 /* listen worker: initialize connection and buffers for SMC-D */
1740 /* check if peer is smc capable */ in smc_listen_work()
1748 * wait for and receive SMC Proposal CLC message in smc_listen_work()
1762 /* IPSec connections opt out of SMC optimizations */ in smc_listen_work()
1789 /* send SMC Accept CLC message */ in smc_listen_work()
1795 /* SMC-D does not need this lock any more */ in smc_listen_work()
1799 /* receive SMC Confirm CLC message */ in smc_listen_work()
1886 struct smc_sock *smc; in smc_listen() local
1889 smc = smc_sk(sk); in smc_listen()
1894 smc->connect_nonblock) in smc_listen()
1903 * them to the clc socket -- copy smc socket options to clc socket in smc_listen()
1905 smc_copy_sock_settings_to_clc(smc); in smc_listen()
1906 if (!smc->use_fallback) in smc_listen()
1907 tcp_sk(smc->clcsock->sk)->syn_smc = 1; in smc_listen()
1910 * smc-specific sk_data_ready function in smc_listen()
1912 smc->clcsk_data_ready = smc->clcsock->sk->sk_data_ready; in smc_listen()
1913 smc->clcsock->sk->sk_data_ready = smc_clcsock_data_ready; in smc_listen()
1914 smc->clcsock->sk->sk_user_data = in smc_listen()
1915 (void *)((uintptr_t)smc | SK_USER_DATA_NOCOPY); in smc_listen()
1916 rc = kernel_listen(smc->clcsock, backlog); in smc_listen()
2001 struct smc_sock *smc; in smc_getname() local
2007 smc = smc_sk(sock->sk); in smc_getname()
2009 return smc->clcsock->ops->getname(smc->clcsock, addr, peer); in smc_getname()
2015 struct smc_sock *smc; in smc_sendmsg() local
2018 smc = smc_sk(sk); in smc_sendmsg()
2026 if (sk->sk_state == SMC_INIT && !smc->connect_nonblock) { in smc_sendmsg()
2027 smc_switch_to_fallback(smc, SMC_CLC_DECL_OPTUNSUPP); in smc_sendmsg()
2034 if (smc->use_fallback) { in smc_sendmsg()
2035 rc = smc->clcsock->ops->sendmsg(smc->clcsock, msg, len); in smc_sendmsg()
2037 rc = smc_tx_sendmsg(smc, msg, len); in smc_sendmsg()
2038 SMC_STAT_TX_PAYLOAD(smc, len, rc); in smc_sendmsg()
2049 struct smc_sock *smc; in smc_recvmsg() local
2052 smc = smc_sk(sk); in smc_recvmsg()
2069 if (smc->use_fallback) { in smc_recvmsg()
2070 rc = smc->clcsock->ops->recvmsg(smc->clcsock, msg, len, flags); in smc_recvmsg()
2073 rc = smc_rx_recvmsg(smc, msg, NULL, len, flags); in smc_recvmsg()
2074 SMC_STAT_RX_PAYLOAD(smc, rc, rc); in smc_recvmsg()
2099 struct smc_sock *smc; in smc_poll() local
2105 smc = smc_sk(sock->sk); in smc_poll()
2106 if (smc->use_fallback) { in smc_poll()
2108 mask = smc->clcsock->ops->poll(file, smc->clcsock, wait); in smc_poll()
2109 sk->sk_err = smc->clcsock->sk->sk_err; in smc_poll()
2121 } else if (smc->use_fallback) { /* as result of connect_work()*/ in smc_poll()
2122 mask |= smc->clcsock->ops->poll(file, smc->clcsock, in smc_poll()
2124 sk->sk_err = smc->clcsock->sk->sk_err; in smc_poll()
2127 atomic_read(&smc->conn.sndbuf_space)) || in smc_poll()
2134 if (atomic_read(&smc->conn.bytes_to_rcv)) in smc_poll()
2140 if (smc->conn.urg_state == SMC_URG_VALID) in smc_poll()
2151 struct smc_sock *smc; in smc_shutdown() local
2155 smc = smc_sk(sk); in smc_shutdown()
2170 if (smc->use_fallback) { in smc_shutdown()
2171 rc = kernel_sock_shutdown(smc->clcsock, how); in smc_shutdown()
2172 sk->sk_shutdown = smc->clcsock->sk->sk_shutdown; in smc_shutdown()
2179 rc = smc_close_active(smc); in smc_shutdown()
2182 rc = smc_close_shutdown_write(smc); in smc_shutdown()
2189 if (smc->clcsock) in smc_shutdown()
2190 rc1 = kernel_sock_shutdown(smc->clcsock, how); in smc_shutdown()
2203 struct smc_sock *smc; in smc_setsockopt() local
2209 smc = smc_sk(sk); in smc_setsockopt()
2214 if (unlikely(!smc->clcsock->ops->setsockopt)) in smc_setsockopt()
2217 rc = smc->clcsock->ops->setsockopt(smc->clcsock, level, optname, in smc_setsockopt()
2219 if (smc->clcsock->sk->sk_err) { in smc_setsockopt()
2220 sk->sk_err = smc->clcsock->sk->sk_err; in smc_setsockopt()
2230 if (rc || smc->use_fallback) in smc_setsockopt()
2237 /* option not supported by SMC */ in smc_setsockopt()
2238 if (sk->sk_state == SMC_INIT && !smc->connect_nonblock) { in smc_setsockopt()
2239 smc_switch_to_fallback(smc, SMC_CLC_DECL_OPTUNSUPP); in smc_setsockopt()
2249 SMC_STAT_INC(smc, ndly_cnt); in smc_setsockopt()
2250 mod_delayed_work(smc->conn.lgr->tx_wq, in smc_setsockopt()
2251 &smc->conn.tx_work, 0); in smc_setsockopt()
2260 SMC_STAT_INC(smc, cork_cnt); in smc_setsockopt()
2261 mod_delayed_work(smc->conn.lgr->tx_wq, in smc_setsockopt()
2262 &smc->conn.tx_work, 0); in smc_setsockopt()
2267 smc->sockopt_defer_accept = val; in smc_setsockopt()
2281 struct smc_sock *smc; in smc_getsockopt() local
2283 smc = smc_sk(sock->sk); in smc_getsockopt()
2285 if (unlikely(!smc->clcsock->ops->getsockopt)) in smc_getsockopt()
2287 return smc->clcsock->ops->getsockopt(smc->clcsock, level, optname, in smc_getsockopt()
2296 struct smc_sock *smc; in smc_ioctl() local
2299 smc = smc_sk(sock->sk); in smc_ioctl()
2300 conn = &smc->conn; in smc_ioctl()
2301 lock_sock(&smc->sk); in smc_ioctl()
2302 if (smc->use_fallback) { in smc_ioctl()
2303 if (!smc->clcsock) { in smc_ioctl()
2304 release_sock(&smc->sk); in smc_ioctl()
2307 answ = smc->clcsock->ops->ioctl(smc->clcsock, cmd, arg); in smc_ioctl()
2308 release_sock(&smc->sk); in smc_ioctl()
2313 if (smc->sk.sk_state == SMC_LISTEN) { in smc_ioctl()
2314 release_sock(&smc->sk); in smc_ioctl()
2317 if (smc->sk.sk_state == SMC_INIT || in smc_ioctl()
2318 smc->sk.sk_state == SMC_CLOSED) in smc_ioctl()
2321 answ = atomic_read(&smc->conn.bytes_to_rcv); in smc_ioctl()
2325 if (smc->sk.sk_state == SMC_LISTEN) { in smc_ioctl()
2326 release_sock(&smc->sk); in smc_ioctl()
2329 if (smc->sk.sk_state == SMC_INIT || in smc_ioctl()
2330 smc->sk.sk_state == SMC_CLOSED) in smc_ioctl()
2333 answ = smc->conn.sndbuf_desc->len - in smc_ioctl()
2334 atomic_read(&smc->conn.sndbuf_space); in smc_ioctl()
2338 if (smc->sk.sk_state == SMC_LISTEN) { in smc_ioctl()
2339 release_sock(&smc->sk); in smc_ioctl()
2342 if (smc->sk.sk_state == SMC_INIT || in smc_ioctl()
2343 smc->sk.sk_state == SMC_CLOSED) in smc_ioctl()
2346 answ = smc_tx_prepared_sends(&smc->conn); in smc_ioctl()
2349 if (smc->sk.sk_state == SMC_LISTEN) { in smc_ioctl()
2350 release_sock(&smc->sk); in smc_ioctl()
2353 if (smc->sk.sk_state == SMC_INIT || in smc_ioctl()
2354 smc->sk.sk_state == SMC_CLOSED) { in smc_ioctl()
2364 release_sock(&smc->sk); in smc_ioctl()
2367 release_sock(&smc->sk); in smc_ioctl()
2376 struct smc_sock *smc; in smc_sendpage() local
2379 smc = smc_sk(sk); in smc_sendpage()
2386 if (smc->use_fallback) { in smc_sendpage()
2387 rc = kernel_sendpage(smc->clcsock, page, offset, in smc_sendpage()
2390 SMC_STAT_INC(smc, sendpage_cnt); in smc_sendpage()
2409 struct smc_sock *smc; in smc_splice_read() local
2412 smc = smc_sk(sk); in smc_splice_read()
2429 if (smc->use_fallback) { in smc_splice_read()
2430 rc = smc->clcsock->ops->splice_read(smc->clcsock, ppos, in smc_splice_read()
2441 SMC_STAT_INC(smc, splice_cnt); in smc_splice_read()
2442 rc = smc_rx_recvmsg(smc, NULL, pipe, len, flags); in smc_splice_read()
2477 struct smc_sock *smc; in smc_create() local
2496 smc = smc_sk(sk); in smc_create()
2497 smc->use_fallback = false; /* assume rdma capability first */ in smc_create()
2498 smc->fallback_rsn = 0; in smc_create()
2500 &smc->clcsock); in smc_create()
2505 smc->sk.sk_sndbuf = max(smc->clcsock->sk->sk_sndbuf, SMC_BUF_MIN_SIZE); in smc_create()
2506 smc->sk.sk_rcvbuf = max(smc->clcsock->sk->sk_rcvbuf, SMC_BUF_MIN_SIZE); in smc_create()
2674 MODULE_DESCRIPTION("smc socket address family");