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"
67 struct smc_sock *smc = smc_sk(sk); in smc_set_keepalive() local
69 smc->clcsock->sk->sk_prot->keepalive(smc->clcsock->sk, val); in smc_set_keepalive()
108 .name = "SMC",
131 static void smc_restore_fallback_changes(struct smc_sock *smc) in smc_restore_fallback_changes() argument
133 if (smc->clcsock->file) { /* non-accepted sockets have no file yet */ in smc_restore_fallback_changes()
134 smc->clcsock->file->private_data = smc->sk.sk_socket; in smc_restore_fallback_changes()
135 smc->clcsock->file = NULL; in smc_restore_fallback_changes()
139 static int __smc_release(struct smc_sock *smc) in __smc_release() argument
141 struct sock *sk = &smc->sk; in __smc_release()
144 if (!smc->use_fallback) { in __smc_release()
145 rc = smc_close_active(smc); in __smc_release()
155 rc = kernel_sock_shutdown(smc->clcsock, in __smc_release()
161 smc_restore_fallback_changes(smc); in __smc_release()
167 if (smc->clcsock) { in __smc_release()
169 smc_clcsock_release(smc); in __smc_release()
172 if (!smc->use_fallback) in __smc_release()
173 smc_conn_free(&smc->conn); in __smc_release()
182 struct smc_sock *smc; in smc_release() local
189 smc = smc_sk(sk); in smc_release()
192 if (smc->connect_nonblock && sk->sk_state == SMC_INIT) in smc_release()
193 tcp_abort(smc->clcsock->sk, ECONNABORTED); in smc_release()
195 if (cancel_work_sync(&smc->connect_work)) in smc_release()
196 sock_put(&smc->sk); /* sock_hold in smc_connect for passive closing */ in smc_release()
206 rc = __smc_release(smc); in smc_release()
232 struct smc_sock *smc; in smc_sock_alloc() local
245 smc = smc_sk(sk); in smc_sock_alloc()
246 INIT_WORK(&smc->tcp_listen_work, smc_tcp_listen_work); in smc_sock_alloc()
247 INIT_WORK(&smc->connect_work, smc_connect_work); in smc_sock_alloc()
248 INIT_DELAYED_WORK(&smc->conn.tx_work, smc_tx_work); in smc_sock_alloc()
249 INIT_LIST_HEAD(&smc->accept_q); in smc_sock_alloc()
250 spin_lock_init(&smc->accept_q_lock); in smc_sock_alloc()
251 spin_lock_init(&smc->conn.send_lock); in smc_sock_alloc()
254 mutex_init(&smc->clcsock_release_lock); in smc_sock_alloc()
264 struct smc_sock *smc; in smc_bind() local
267 smc = smc_sk(sk); in smc_bind()
288 if (sk->sk_state != SMC_INIT || smc->connect_nonblock) in smc_bind()
291 smc->clcsock->sk->sk_reuse = sk->sk_reuse; in smc_bind()
292 rc = kernel_bind(smc->clcsock, uaddr, addr_len); in smc_bind()
334 /* copy only relevant settings and flags of SOL_SOCKET level from smc to
335 * clc socket (since smc is not called for these options from net/core)
337 static void smc_copy_sock_settings_to_clc(struct smc_sock *smc) in smc_copy_sock_settings_to_clc() argument
339 smc_copy_sock_settings(smc->clcsock->sk, &smc->sk, SK_FLAGS_SMC_TO_CLC); in smc_copy_sock_settings_to_clc()
346 /* copy only settings and flags relevant for smc from clc to smc socket */
347 static void smc_copy_sock_settings_to_smc(struct smc_sock *smc) in smc_copy_sock_settings_to_smc() argument
349 smc_copy_sock_settings(&smc->sk, smc->clcsock->sk, SK_FLAGS_CLC_TO_SMC); in smc_copy_sock_settings_to_smc()
387 static int smcr_clnt_conf_first_link(struct smc_sock *smc) in smcr_clnt_conf_first_link() argument
389 struct smc_link *link = smc->conn.lnk; in smcr_clnt_conf_first_link()
399 rc = smc_clc_wait_msg(smc, &dclc, sizeof(dclc), in smcr_clnt_conf_first_link()
415 if (smcr_link_reg_rmb(link, smc->conn.rmb_desc)) in smcr_clnt_conf_first_link()
419 smc->conn.rmb_desc->is_conf_rkey = true; in smcr_clnt_conf_first_link()
435 rc = smc_clc_wait_msg(smc, &dclc, sizeof(dclc), in smcr_clnt_conf_first_link()
446 static void smcr_conn_save_peer_info(struct smc_sock *smc, in smcr_conn_save_peer_info() argument
451 smc->conn.peer_rmbe_idx = clc->r0.rmbe_idx; in smcr_conn_save_peer_info()
452 smc->conn.local_tx_ctrl.token = ntohl(clc->r0.rmbe_alert_token); in smcr_conn_save_peer_info()
453 smc->conn.peer_rmbe_size = bufsize; in smcr_conn_save_peer_info()
454 atomic_set(&smc->conn.peer_rmbe_space, smc->conn.peer_rmbe_size); in smcr_conn_save_peer_info()
455 smc->conn.tx_off = bufsize * (smc->conn.peer_rmbe_idx - 1); in smcr_conn_save_peer_info()
468 static void smcd_conn_save_peer_info(struct smc_sock *smc, in smcd_conn_save_peer_info() argument
473 smc->conn.peer_rmbe_idx = clc->d0.dmbe_idx; in smcd_conn_save_peer_info()
474 smc->conn.peer_token = clc->d0.token; in smcd_conn_save_peer_info()
476 smc->conn.peer_rmbe_size = bufsize - sizeof(struct smcd_cdc_msg); in smcd_conn_save_peer_info()
477 atomic_set(&smc->conn.peer_rmbe_space, smc->conn.peer_rmbe_size); in smcd_conn_save_peer_info()
478 smc->conn.tx_off = bufsize * smc->conn.peer_rmbe_idx; in smcd_conn_save_peer_info()
487 memcpy(smc->conn.lgr->negotiated_eid, clc_v2->eid, in smcd_conn_save_peer_info()
489 smc->conn.lgr->peer_os = fce->os_type; in smcd_conn_save_peer_info()
490 smc->conn.lgr->peer_smc_release = fce->release; in smcd_conn_save_peer_info()
492 memcpy(smc->conn.lgr->peer_hostname, fce->hostname, in smcd_conn_save_peer_info()
497 static void smc_conn_save_peer_info(struct smc_sock *smc, in smc_conn_save_peer_info() argument
500 if (smc->conn.lgr->is_smcd) in smc_conn_save_peer_info()
501 smcd_conn_save_peer_info(smc, clc); in smc_conn_save_peer_info()
503 smcr_conn_save_peer_info(smc, clc); in smc_conn_save_peer_info()
516 static void smc_switch_to_fallback(struct smc_sock *smc) in smc_switch_to_fallback() argument
518 wait_queue_head_t *smc_wait = sk_sleep(&smc->sk); in smc_switch_to_fallback()
519 wait_queue_head_t *clc_wait = sk_sleep(smc->clcsock->sk); in smc_switch_to_fallback()
522 smc->use_fallback = true; in smc_switch_to_fallback()
523 if (smc->sk.sk_socket && smc->sk.sk_socket->file) { in smc_switch_to_fallback()
524 smc->clcsock->file = smc->sk.sk_socket->file; in smc_switch_to_fallback()
525 smc->clcsock->file->private_data = smc->clcsock; in smc_switch_to_fallback()
526 smc->clcsock->wq.fasync_list = in smc_switch_to_fallback()
527 smc->sk.sk_socket->wq.fasync_list; in smc_switch_to_fallback()
530 * smc socket->wq, which should be removed in smc_switch_to_fallback()
542 static int smc_connect_fallback(struct smc_sock *smc, int reason_code) in smc_connect_fallback() argument
544 smc_switch_to_fallback(smc); in smc_connect_fallback()
545 smc->fallback_rsn = reason_code; in smc_connect_fallback()
546 smc_copy_sock_settings_to_clc(smc); in smc_connect_fallback()
547 smc->connect_nonblock = 0; in smc_connect_fallback()
548 if (smc->sk.sk_state == SMC_INIT) in smc_connect_fallback()
549 smc->sk.sk_state = SMC_ACTIVE; in smc_connect_fallback()
554 static int smc_connect_decline_fallback(struct smc_sock *smc, int reason_code, in smc_connect_decline_fallback() argument
560 if (smc->sk.sk_state == SMC_INIT) in smc_connect_decline_fallback()
561 sock_put(&smc->sk); /* passive closing */ in smc_connect_decline_fallback()
565 rc = smc_clc_send_decline(smc, reason_code, version); in smc_connect_decline_fallback()
567 if (smc->sk.sk_state == SMC_INIT) in smc_connect_decline_fallback()
568 sock_put(&smc->sk); /* passive closing */ in smc_connect_decline_fallback()
572 return smc_connect_fallback(smc, reason_code); in smc_connect_decline_fallback()
576 static void smc_connect_abort(struct smc_sock *smc, int local_first) in smc_connect_abort() argument
579 smc_lgr_cleanup_early(&smc->conn); in smc_connect_abort()
581 smc_conn_free(&smc->conn); in smc_connect_abort()
586 static int smc_find_rdma_device(struct smc_sock *smc, struct smc_init_info *ini) in smc_find_rdma_device() argument
592 smc_pnet_find_roce_resource(smc->clcsock->sk, ini); in smc_find_rdma_device()
600 static int smc_find_ism_device(struct smc_sock *smc, struct smc_init_info *ini) in smc_find_ism_device() argument
603 smc_pnet_find_ism_resource(smc->clcsock->sk, ini); in smc_find_ism_device()
626 static int smc_find_ism_v2_device_clnt(struct smc_sock *smc, in smc_find_ism_v2_device_clnt() argument
644 smc_pnet_is_ndev_pnetid(sock_net(&smc->sk), smcd->pnetid)) { in smc_find_ism_v2_device_clnt()
663 static int smc_connect_ism_vlan_setup(struct smc_sock *smc, in smc_connect_ism_vlan_setup() argument
671 static int smc_find_proposal_devices(struct smc_sock *smc, in smc_find_proposal_devices() argument
678 if (smc_find_ism_device(smc, ini) || in smc_find_proposal_devices()
679 smc_connect_ism_vlan_setup(smc, ini)) { in smc_find_proposal_devices()
685 if (smc_find_rdma_device(smc, ini)) { in smc_find_proposal_devices()
692 if (smc_ism_v2_capable && smc_find_ism_v2_device_clnt(smc, ini)) in smc_find_proposal_devices()
706 static int smc_connect_ism_vlan_cleanup(struct smc_sock *smc, in smc_connect_ism_vlan_cleanup() argument
722 static int smc_connect_clc(struct smc_sock *smc, in smc_connect_clc() argument
729 rc = smc_clc_send_proposal(smc, ini); in smc_connect_clc()
732 /* receive SMC Accept CLC message */ in smc_connect_clc()
733 return smc_clc_wait_msg(smc, aclc2, SMC_CLC_MAX_ACCEPT_LEN, in smc_connect_clc()
738 static int smc_connect_rdma(struct smc_sock *smc, in smc_connect_rdma() argument
751 reason_code = smc_conn_create(smc, ini); in smc_connect_rdma()
757 smc_conn_save_peer_info(smc, aclc); in smc_connect_rdma()
760 link = smc->conn.lnk; in smc_connect_rdma()
765 struct smc_link *l = &smc->conn.lgr->lnk[i]; in smc_connect_rdma()
780 smc->conn.lnk = link; in smc_connect_rdma()
784 if (smc_buf_create(smc, false)) { in smc_connect_rdma()
792 if (smc_rmb_rtoken_handling(&smc->conn, link, aclc)) { in smc_connect_rdma()
797 smc_close_init(smc); in smc_connect_rdma()
798 smc_rx_init(smc); in smc_connect_rdma()
806 if (smcr_lgr_reg_rmbs(link, smc->conn.rmb_desc)) { in smc_connect_rdma()
811 smc_rmb_sync_sg_for_device(&smc->conn); in smc_connect_rdma()
813 reason_code = smc_clc_send_confirm(smc, ini->first_contact_local, in smc_connect_rdma()
818 smc_tx_init(smc); in smc_connect_rdma()
823 reason_code = smcr_clnt_conf_first_link(smc); in smc_connect_rdma()
830 smc_copy_sock_settings_to_clc(smc); in smc_connect_rdma()
831 smc->connect_nonblock = 0; in smc_connect_rdma()
832 if (smc->sk.sk_state == SMC_INIT) in smc_connect_rdma()
833 smc->sk.sk_state = SMC_ACTIVE; in smc_connect_rdma()
837 smc_connect_abort(smc, ini->first_contact_local); in smc_connect_rdma()
839 smc->connect_nonblock = 0; in smc_connect_rdma()
864 static int smc_connect_ism(struct smc_sock *smc, in smc_connect_ism() argument
883 /* there is only one lgr role for SMC-D; use server lock */ in smc_connect_ism()
885 rc = smc_conn_create(smc, ini); in smc_connect_ism()
892 rc = smc_buf_create(smc, true); in smc_connect_ism()
898 smc_conn_save_peer_info(smc, aclc); in smc_connect_ism()
899 smc_close_init(smc); in smc_connect_ism()
900 smc_rx_init(smc); in smc_connect_ism()
901 smc_tx_init(smc); in smc_connect_ism()
903 rc = smc_clc_send_confirm(smc, ini->first_contact_local, in smc_connect_ism()
909 smc_copy_sock_settings_to_clc(smc); in smc_connect_ism()
910 smc->connect_nonblock = 0; in smc_connect_ism()
911 if (smc->sk.sk_state == SMC_INIT) in smc_connect_ism()
912 smc->sk.sk_state = SMC_ACTIVE; in smc_connect_ism()
916 smc_connect_abort(smc, ini->first_contact_local); in smc_connect_ism()
918 smc->connect_nonblock = 0; in smc_connect_ism()
942 static int __smc_connect(struct smc_sock *smc) in __smc_connect() argument
951 if (smc->use_fallback) in __smc_connect()
952 return smc_connect_fallback(smc, smc->fallback_rsn); in __smc_connect()
954 /* if peer has not signalled SMC-capability, fall back */ in __smc_connect()
955 if (!tcp_sk(smc->clcsock->sk)->syn_smc) in __smc_connect()
956 return smc_connect_fallback(smc, SMC_CLC_DECL_PEERNOSMC); in __smc_connect()
958 /* IPSec connections opt out of SMC optimizations */ in __smc_connect()
959 if (using_ipsec(smc)) in __smc_connect()
960 return smc_connect_decline_fallback(smc, SMC_CLC_DECL_IPSEC, in __smc_connect()
965 return smc_connect_decline_fallback(smc, SMC_CLC_DECL_MEM, in __smc_connect()
974 if (smc_vlan_by_tcpsk(smc->clcsock, ini)) { in __smc_connect()
983 rc = smc_find_proposal_devices(smc, ini); in __smc_connect()
996 rc = smc_connect_clc(smc, aclc2, ini); in __smc_connect()
1000 /* check if smc modes and versions of CLC proposal and accept match */ in __smc_connect()
1009 rc = smc_connect_rdma(smc, aclc, ini); in __smc_connect()
1011 rc = smc_connect_ism(smc, aclc, ini); in __smc_connect()
1015 smc_connect_ism_vlan_cleanup(smc, ini); in __smc_connect()
1021 smc_connect_ism_vlan_cleanup(smc, ini); in __smc_connect()
1025 return smc_connect_decline_fallback(smc, rc, version); in __smc_connect()
1030 struct smc_sock *smc = container_of(work, struct smc_sock, in smc_connect_work() local
1032 long timeo = smc->sk.sk_sndtimeo; in smc_connect_work()
1037 lock_sock(smc->clcsock->sk); in smc_connect_work()
1038 if (smc->clcsock->sk->sk_err) { in smc_connect_work()
1039 smc->sk.sk_err = smc->clcsock->sk->sk_err; in smc_connect_work()
1040 } else if ((1 << smc->clcsock->sk->sk_state) & in smc_connect_work()
1042 rc = sk_stream_wait_connect(smc->clcsock->sk, &timeo); in smc_connect_work()
1044 ((1 << smc->clcsock->sk->sk_state) & in smc_connect_work()
1048 release_sock(smc->clcsock->sk); in smc_connect_work()
1049 lock_sock(&smc->sk); in smc_connect_work()
1050 if (rc != 0 || smc->sk.sk_err) { in smc_connect_work()
1051 smc->sk.sk_state = SMC_CLOSED; in smc_connect_work()
1053 smc->sk.sk_err = EPIPE; in smc_connect_work()
1055 smc->sk.sk_err = -sock_intr_errno(timeo); in smc_connect_work()
1056 sock_put(&smc->sk); /* passive closing */ in smc_connect_work()
1060 rc = __smc_connect(smc); in smc_connect_work()
1062 smc->sk.sk_err = -rc; in smc_connect_work()
1065 if (!sock_flag(&smc->sk, SOCK_DEAD)) { in smc_connect_work()
1066 if (smc->sk.sk_err) { in smc_connect_work()
1067 smc->sk.sk_state_change(&smc->sk); in smc_connect_work()
1069 smc->clcsock->sk->sk_write_space(smc->clcsock->sk); in smc_connect_work()
1070 smc->sk.sk_write_space(&smc->sk); in smc_connect_work()
1073 release_sock(&smc->sk); in smc_connect_work()
1080 struct smc_sock *smc; in smc_connect() local
1083 smc = smc_sk(sk); in smc_connect()
1085 /* separate smc parameter checking to be safe */ in smc_connect()
1103 smc_copy_sock_settings_to_clc(smc); in smc_connect()
1104 tcp_sk(smc->clcsock->sk)->syn_smc = 1; in smc_connect()
1105 if (smc->connect_nonblock) { in smc_connect()
1109 rc = kernel_connect(smc->clcsock, addr, alen, flags); in smc_connect()
1113 sock_hold(&smc->sk); /* sock put in passive closing */ in smc_connect()
1114 if (smc->use_fallback) in smc_connect()
1117 if (queue_work(smc_hs_wq, &smc->connect_work)) in smc_connect()
1118 smc->connect_nonblock = 1; in smc_connect()
1121 rc = __smc_connect(smc); in smc_connect()
1170 /* new clcsock has inherited the smc listen-specific sk_data_ready in smc_clcsock_accept()
1242 struct smc_sock *smc = smc_sk(sk); in smc_close_non_accepted() local
1249 __smc_release(smc); in smc_close_non_accepted()
1255 static int smcr_serv_conf_first_link(struct smc_sock *smc) in smcr_serv_conf_first_link() argument
1257 struct smc_link *link = smc->conn.lnk; in smcr_serv_conf_first_link()
1261 if (smcr_link_reg_rmb(link, smc->conn.rmb_desc)) in smcr_serv_conf_first_link()
1275 rc = smc_clc_wait_msg(smc, &dclc, sizeof(dclc), in smcr_serv_conf_first_link()
1286 smc->conn.rmb_desc->is_conf_rkey = true; in smcr_serv_conf_first_link()
1438 /* listen worker: initialize connection and buffers for SMC-D */
1706 /* check if peer is smc capable */ in smc_listen_work()
1715 * wait for and receive SMC Proposal CLC message in smc_listen_work()
1729 /* IPSec connections opt out of SMC optimizations */ in smc_listen_work()
1756 /* send SMC Accept CLC message */ in smc_listen_work()
1762 /* SMC-D does not need this lock any more */ in smc_listen_work()
1766 /* receive SMC Confirm CLC message */ in smc_listen_work()
1852 struct smc_sock *smc; in smc_listen() local
1855 smc = smc_sk(sk); in smc_listen()
1860 smc->connect_nonblock) in smc_listen()
1869 * them to the clc socket -- copy smc socket options to clc socket in smc_listen()
1871 smc_copy_sock_settings_to_clc(smc); in smc_listen()
1872 if (!smc->use_fallback) in smc_listen()
1873 tcp_sk(smc->clcsock->sk)->syn_smc = 1; in smc_listen()
1876 * smc-specific sk_data_ready function in smc_listen()
1878 smc->clcsk_data_ready = smc->clcsock->sk->sk_data_ready; in smc_listen()
1879 smc->clcsock->sk->sk_data_ready = smc_clcsock_data_ready; in smc_listen()
1880 smc->clcsock->sk->sk_user_data = in smc_listen()
1881 (void *)((uintptr_t)smc | SK_USER_DATA_NOCOPY); in smc_listen()
1882 rc = kernel_listen(smc->clcsock, backlog); in smc_listen()
1884 smc->clcsock->sk->sk_data_ready = smc->clcsk_data_ready; in smc_listen()
1969 struct smc_sock *smc; in smc_getname() local
1975 smc = smc_sk(sock->sk); in smc_getname()
1977 return smc->clcsock->ops->getname(smc->clcsock, addr, peer); in smc_getname()
1983 struct smc_sock *smc; in smc_sendmsg() local
1986 smc = smc_sk(sk); in smc_sendmsg()
1994 if (sk->sk_state == SMC_INIT && !smc->connect_nonblock) { in smc_sendmsg()
1995 smc_switch_to_fallback(smc); in smc_sendmsg()
1996 smc->fallback_rsn = SMC_CLC_DECL_OPTUNSUPP; in smc_sendmsg()
2003 if (smc->use_fallback) in smc_sendmsg()
2004 rc = smc->clcsock->ops->sendmsg(smc->clcsock, msg, len); in smc_sendmsg()
2006 rc = smc_tx_sendmsg(smc, msg, len); in smc_sendmsg()
2016 struct smc_sock *smc; in smc_recvmsg() local
2019 smc = smc_sk(sk); in smc_recvmsg()
2036 if (smc->use_fallback) { in smc_recvmsg()
2037 rc = smc->clcsock->ops->recvmsg(smc->clcsock, msg, len, flags); in smc_recvmsg()
2040 rc = smc_rx_recvmsg(smc, msg, NULL, len, flags); in smc_recvmsg()
2065 struct smc_sock *smc; in smc_poll() local
2071 smc = smc_sk(sock->sk); in smc_poll()
2072 if (smc->use_fallback) { in smc_poll()
2074 mask = smc->clcsock->ops->poll(file, smc->clcsock, wait); in smc_poll()
2075 sk->sk_err = smc->clcsock->sk->sk_err; in smc_poll()
2087 } else if (smc->use_fallback) { /* as result of connect_work()*/ in smc_poll()
2088 mask |= smc->clcsock->ops->poll(file, smc->clcsock, in smc_poll()
2090 sk->sk_err = smc->clcsock->sk->sk_err; in smc_poll()
2093 atomic_read(&smc->conn.sndbuf_space)) || in smc_poll()
2100 if (atomic_read(&smc->conn.bytes_to_rcv)) in smc_poll()
2106 if (smc->conn.urg_state == SMC_URG_VALID) in smc_poll()
2118 struct smc_sock *smc; in smc_shutdown() local
2123 smc = smc_sk(sk); in smc_shutdown()
2138 if (smc->use_fallback) { in smc_shutdown()
2139 rc = kernel_sock_shutdown(smc->clcsock, how); in smc_shutdown()
2140 sk->sk_shutdown = smc->clcsock->sk->sk_shutdown; in smc_shutdown()
2148 rc = smc_close_active(smc); in smc_shutdown()
2154 rc = smc_close_shutdown_write(smc); in smc_shutdown()
2161 if (do_shutdown && smc->clcsock) in smc_shutdown()
2162 rc1 = kernel_sock_shutdown(smc->clcsock, how); in smc_shutdown()
2175 struct smc_sock *smc; in smc_setsockopt() local
2181 smc = smc_sk(sk); in smc_setsockopt()
2186 if (unlikely(!smc->clcsock->ops->setsockopt)) in smc_setsockopt()
2189 rc = smc->clcsock->ops->setsockopt(smc->clcsock, level, optname, in smc_setsockopt()
2191 if (smc->clcsock->sk->sk_err) { in smc_setsockopt()
2192 sk->sk_err = smc->clcsock->sk->sk_err; in smc_setsockopt()
2202 if (rc || smc->use_fallback) in smc_setsockopt()
2209 /* option not supported by SMC */ in smc_setsockopt()
2210 if (sk->sk_state == SMC_INIT && !smc->connect_nonblock) { in smc_setsockopt()
2211 smc_switch_to_fallback(smc); in smc_setsockopt()
2212 smc->fallback_rsn = SMC_CLC_DECL_OPTUNSUPP; in smc_setsockopt()
2222 mod_delayed_work(smc->conn.lgr->tx_wq, in smc_setsockopt()
2223 &smc->conn.tx_work, 0); in smc_setsockopt()
2231 mod_delayed_work(smc->conn.lgr->tx_wq, in smc_setsockopt()
2232 &smc->conn.tx_work, 0); in smc_setsockopt()
2236 smc->sockopt_defer_accept = val; in smc_setsockopt()
2250 struct smc_sock *smc; in smc_getsockopt() local
2252 smc = smc_sk(sock->sk); in smc_getsockopt()
2254 if (unlikely(!smc->clcsock->ops->getsockopt)) in smc_getsockopt()
2256 return smc->clcsock->ops->getsockopt(smc->clcsock, level, optname, in smc_getsockopt()
2265 struct smc_sock *smc; in smc_ioctl() local
2268 smc = smc_sk(sock->sk); in smc_ioctl()
2269 conn = &smc->conn; in smc_ioctl()
2270 lock_sock(&smc->sk); in smc_ioctl()
2271 if (smc->use_fallback) { in smc_ioctl()
2272 if (!smc->clcsock) { in smc_ioctl()
2273 release_sock(&smc->sk); in smc_ioctl()
2276 answ = smc->clcsock->ops->ioctl(smc->clcsock, cmd, arg); in smc_ioctl()
2277 release_sock(&smc->sk); in smc_ioctl()
2282 if (smc->sk.sk_state == SMC_LISTEN) { in smc_ioctl()
2283 release_sock(&smc->sk); in smc_ioctl()
2286 if (smc->sk.sk_state == SMC_INIT || in smc_ioctl()
2287 smc->sk.sk_state == SMC_CLOSED) in smc_ioctl()
2290 answ = atomic_read(&smc->conn.bytes_to_rcv); in smc_ioctl()
2294 if (smc->sk.sk_state == SMC_LISTEN) { in smc_ioctl()
2295 release_sock(&smc->sk); in smc_ioctl()
2298 if (smc->sk.sk_state == SMC_INIT || in smc_ioctl()
2299 smc->sk.sk_state == SMC_CLOSED) in smc_ioctl()
2302 answ = smc->conn.sndbuf_desc->len - in smc_ioctl()
2303 atomic_read(&smc->conn.sndbuf_space); in smc_ioctl()
2307 if (smc->sk.sk_state == SMC_LISTEN) { in smc_ioctl()
2308 release_sock(&smc->sk); in smc_ioctl()
2311 if (smc->sk.sk_state == SMC_INIT || in smc_ioctl()
2312 smc->sk.sk_state == SMC_CLOSED) in smc_ioctl()
2315 answ = smc_tx_prepared_sends(&smc->conn); in smc_ioctl()
2318 if (smc->sk.sk_state == SMC_LISTEN) { in smc_ioctl()
2319 release_sock(&smc->sk); in smc_ioctl()
2322 if (smc->sk.sk_state == SMC_INIT || in smc_ioctl()
2323 smc->sk.sk_state == SMC_CLOSED) { in smc_ioctl()
2333 release_sock(&smc->sk); in smc_ioctl()
2336 release_sock(&smc->sk); in smc_ioctl()
2345 struct smc_sock *smc; in smc_sendpage() local
2348 smc = smc_sk(sk); in smc_sendpage()
2355 if (smc->use_fallback) in smc_sendpage()
2356 rc = kernel_sendpage(smc->clcsock, page, offset, in smc_sendpage()
2376 struct smc_sock *smc; in smc_splice_read() local
2379 smc = smc_sk(sk); in smc_splice_read()
2396 if (smc->use_fallback) { in smc_splice_read()
2397 rc = smc->clcsock->ops->splice_read(smc->clcsock, ppos, in smc_splice_read()
2408 rc = smc_rx_recvmsg(smc, NULL, pipe, len, flags); in smc_splice_read()
2443 struct smc_sock *smc; in smc_create() local
2462 smc = smc_sk(sk); in smc_create()
2463 smc->use_fallback = false; /* assume rdma capability first */ in smc_create()
2464 smc->fallback_rsn = 0; in smc_create()
2466 &smc->clcsock); in smc_create()
2471 smc->sk.sk_sndbuf = max(smc->clcsock->sk->sk_sndbuf, SMC_BUF_MIN_SIZE); in smc_create()
2472 smc->sk.sk_rcvbuf = max(smc->clcsock->sk->sk_rcvbuf, SMC_BUF_MIN_SIZE); in smc_create()
2613 MODULE_DESCRIPTION("smc socket address family");