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()
153 rc = kernel_sock_shutdown(smc->clcsock, SHUT_RDWR); in __smc_release()
157 smc_restore_fallback_changes(smc); in __smc_release()
163 if (smc->clcsock) { in __smc_release()
165 smc_clcsock_release(smc); in __smc_release()
168 if (!smc->use_fallback) in __smc_release()
169 smc_conn_free(&smc->conn); in __smc_release()
178 struct smc_sock *smc; in smc_release() local
185 smc = smc_sk(sk); in smc_release()
188 if (smc->connect_nonblock && sk->sk_state == SMC_INIT) in smc_release()
189 tcp_abort(smc->clcsock->sk, ECONNABORTED); in smc_release()
190 flush_work(&smc->connect_work); in smc_release()
200 rc = __smc_release(smc); in smc_release()
226 struct smc_sock *smc; in smc_sock_alloc() local
239 smc = smc_sk(sk); in smc_sock_alloc()
240 INIT_WORK(&smc->tcp_listen_work, smc_tcp_listen_work); in smc_sock_alloc()
241 INIT_WORK(&smc->connect_work, smc_connect_work); in smc_sock_alloc()
242 INIT_DELAYED_WORK(&smc->conn.tx_work, smc_tx_work); in smc_sock_alloc()
243 INIT_LIST_HEAD(&smc->accept_q); in smc_sock_alloc()
244 spin_lock_init(&smc->accept_q_lock); in smc_sock_alloc()
245 spin_lock_init(&smc->conn.send_lock); in smc_sock_alloc()
248 mutex_init(&smc->clcsock_release_lock); in smc_sock_alloc()
258 struct smc_sock *smc; in smc_bind() local
261 smc = smc_sk(sk); in smc_bind()
282 if (sk->sk_state != SMC_INIT || smc->connect_nonblock) in smc_bind()
285 smc->clcsock->sk->sk_reuse = sk->sk_reuse; in smc_bind()
286 rc = kernel_bind(smc->clcsock, uaddr, addr_len); in smc_bind()
328 /* copy only relevant settings and flags of SOL_SOCKET level from smc to
329 * clc socket (since smc is not called for these options from net/core)
331 static void smc_copy_sock_settings_to_clc(struct smc_sock *smc) in smc_copy_sock_settings_to_clc() argument
333 smc_copy_sock_settings(smc->clcsock->sk, &smc->sk, SK_FLAGS_SMC_TO_CLC); in smc_copy_sock_settings_to_clc()
340 /* copy only settings and flags relevant for smc from clc to smc socket */
341 static void smc_copy_sock_settings_to_smc(struct smc_sock *smc) in smc_copy_sock_settings_to_smc() argument
343 smc_copy_sock_settings(&smc->sk, smc->clcsock->sk, SK_FLAGS_CLC_TO_SMC); in smc_copy_sock_settings_to_smc()
381 static int smcr_clnt_conf_first_link(struct smc_sock *smc) in smcr_clnt_conf_first_link() argument
383 struct smc_link *link = smc->conn.lnk; in smcr_clnt_conf_first_link()
393 rc = smc_clc_wait_msg(smc, &dclc, sizeof(dclc), in smcr_clnt_conf_first_link()
409 if (smcr_link_reg_rmb(link, smc->conn.rmb_desc)) in smcr_clnt_conf_first_link()
413 smc->conn.rmb_desc->is_conf_rkey = true; in smcr_clnt_conf_first_link()
429 rc = smc_clc_wait_msg(smc, &dclc, sizeof(dclc), in smcr_clnt_conf_first_link()
440 static void smcr_conn_save_peer_info(struct smc_sock *smc, in smcr_conn_save_peer_info() argument
445 smc->conn.peer_rmbe_idx = clc->r0.rmbe_idx; in smcr_conn_save_peer_info()
446 smc->conn.local_tx_ctrl.token = ntohl(clc->r0.rmbe_alert_token); in smcr_conn_save_peer_info()
447 smc->conn.peer_rmbe_size = bufsize; in smcr_conn_save_peer_info()
448 atomic_set(&smc->conn.peer_rmbe_space, smc->conn.peer_rmbe_size); in smcr_conn_save_peer_info()
449 smc->conn.tx_off = bufsize * (smc->conn.peer_rmbe_idx - 1); in smcr_conn_save_peer_info()
462 static void smcd_conn_save_peer_info(struct smc_sock *smc, in smcd_conn_save_peer_info() argument
467 smc->conn.peer_rmbe_idx = clc->d0.dmbe_idx; in smcd_conn_save_peer_info()
468 smc->conn.peer_token = clc->d0.token; in smcd_conn_save_peer_info()
470 smc->conn.peer_rmbe_size = bufsize - sizeof(struct smcd_cdc_msg); in smcd_conn_save_peer_info()
471 atomic_set(&smc->conn.peer_rmbe_space, smc->conn.peer_rmbe_size); in smcd_conn_save_peer_info()
472 smc->conn.tx_off = bufsize * smc->conn.peer_rmbe_idx; in smcd_conn_save_peer_info()
481 memcpy(smc->conn.lgr->negotiated_eid, clc_v2->eid, in smcd_conn_save_peer_info()
483 smc->conn.lgr->peer_os = fce->os_type; in smcd_conn_save_peer_info()
484 smc->conn.lgr->peer_smc_release = fce->release; in smcd_conn_save_peer_info()
486 memcpy(smc->conn.lgr->peer_hostname, fce->hostname, in smcd_conn_save_peer_info()
491 static void smc_conn_save_peer_info(struct smc_sock *smc, in smc_conn_save_peer_info() argument
494 if (smc->conn.lgr->is_smcd) in smc_conn_save_peer_info()
495 smcd_conn_save_peer_info(smc, clc); in smc_conn_save_peer_info()
497 smcr_conn_save_peer_info(smc, clc); in smc_conn_save_peer_info()
510 static void smc_switch_to_fallback(struct smc_sock *smc) in smc_switch_to_fallback() argument
512 smc->use_fallback = true; in smc_switch_to_fallback()
513 if (smc->sk.sk_socket && smc->sk.sk_socket->file) { in smc_switch_to_fallback()
514 smc->clcsock->file = smc->sk.sk_socket->file; in smc_switch_to_fallback()
515 smc->clcsock->file->private_data = smc->clcsock; in smc_switch_to_fallback()
516 smc->clcsock->wq.fasync_list = in smc_switch_to_fallback()
517 smc->sk.sk_socket->wq.fasync_list; in smc_switch_to_fallback()
522 static int smc_connect_fallback(struct smc_sock *smc, int reason_code) in smc_connect_fallback() argument
524 smc_switch_to_fallback(smc); in smc_connect_fallback()
525 smc->fallback_rsn = reason_code; in smc_connect_fallback()
526 smc_copy_sock_settings_to_clc(smc); in smc_connect_fallback()
527 smc->connect_nonblock = 0; in smc_connect_fallback()
528 if (smc->sk.sk_state == SMC_INIT) in smc_connect_fallback()
529 smc->sk.sk_state = SMC_ACTIVE; in smc_connect_fallback()
534 static int smc_connect_decline_fallback(struct smc_sock *smc, int reason_code, in smc_connect_decline_fallback() argument
540 if (smc->sk.sk_state == SMC_INIT) in smc_connect_decline_fallback()
541 sock_put(&smc->sk); /* passive closing */ in smc_connect_decline_fallback()
545 rc = smc_clc_send_decline(smc, reason_code, version); in smc_connect_decline_fallback()
547 if (smc->sk.sk_state == SMC_INIT) in smc_connect_decline_fallback()
548 sock_put(&smc->sk); /* passive closing */ in smc_connect_decline_fallback()
552 return smc_connect_fallback(smc, reason_code); in smc_connect_decline_fallback()
556 static void smc_connect_abort(struct smc_sock *smc, int local_first) in smc_connect_abort() argument
559 smc_lgr_cleanup_early(&smc->conn); in smc_connect_abort()
561 smc_conn_free(&smc->conn); in smc_connect_abort()
566 static int smc_find_rdma_device(struct smc_sock *smc, struct smc_init_info *ini) in smc_find_rdma_device() argument
572 smc_pnet_find_roce_resource(smc->clcsock->sk, ini); in smc_find_rdma_device()
580 static int smc_find_ism_device(struct smc_sock *smc, struct smc_init_info *ini) in smc_find_ism_device() argument
583 smc_pnet_find_ism_resource(smc->clcsock->sk, ini); in smc_find_ism_device()
606 static int smc_find_ism_v2_device_clnt(struct smc_sock *smc, in smc_find_ism_v2_device_clnt() argument
624 smc_pnet_is_ndev_pnetid(sock_net(&smc->sk), smcd->pnetid)) { in smc_find_ism_v2_device_clnt()
643 static int smc_connect_ism_vlan_setup(struct smc_sock *smc, in smc_connect_ism_vlan_setup() argument
651 static int smc_find_proposal_devices(struct smc_sock *smc, in smc_find_proposal_devices() argument
658 if (smc_find_ism_device(smc, ini) || in smc_find_proposal_devices()
659 smc_connect_ism_vlan_setup(smc, ini)) { in smc_find_proposal_devices()
665 if (smc_find_rdma_device(smc, ini)) { in smc_find_proposal_devices()
672 if (smc_ism_v2_capable && smc_find_ism_v2_device_clnt(smc, ini)) in smc_find_proposal_devices()
686 static int smc_connect_ism_vlan_cleanup(struct smc_sock *smc, in smc_connect_ism_vlan_cleanup() argument
702 static int smc_connect_clc(struct smc_sock *smc, in smc_connect_clc() argument
709 rc = smc_clc_send_proposal(smc, ini); in smc_connect_clc()
712 /* receive SMC Accept CLC message */ in smc_connect_clc()
713 return smc_clc_wait_msg(smc, aclc2, SMC_CLC_MAX_ACCEPT_LEN, in smc_connect_clc()
718 static int smc_connect_rdma(struct smc_sock *smc, in smc_connect_rdma() argument
731 reason_code = smc_conn_create(smc, ini); in smc_connect_rdma()
737 smc_conn_save_peer_info(smc, aclc); in smc_connect_rdma()
740 link = smc->conn.lnk; in smc_connect_rdma()
745 struct smc_link *l = &smc->conn.lgr->lnk[i]; in smc_connect_rdma()
760 smc->conn.lnk = link; in smc_connect_rdma()
764 if (smc_buf_create(smc, false)) { in smc_connect_rdma()
772 if (smc_rmb_rtoken_handling(&smc->conn, link, aclc)) { in smc_connect_rdma()
777 smc_close_init(smc); in smc_connect_rdma()
778 smc_rx_init(smc); in smc_connect_rdma()
786 if (smcr_lgr_reg_rmbs(link, smc->conn.rmb_desc)) { in smc_connect_rdma()
791 smc_rmb_sync_sg_for_device(&smc->conn); in smc_connect_rdma()
793 reason_code = smc_clc_send_confirm(smc, ini->first_contact_local, in smc_connect_rdma()
798 smc_tx_init(smc); in smc_connect_rdma()
803 reason_code = smcr_clnt_conf_first_link(smc); in smc_connect_rdma()
810 smc_copy_sock_settings_to_clc(smc); in smc_connect_rdma()
811 smc->connect_nonblock = 0; in smc_connect_rdma()
812 if (smc->sk.sk_state == SMC_INIT) in smc_connect_rdma()
813 smc->sk.sk_state = SMC_ACTIVE; in smc_connect_rdma()
817 smc_connect_abort(smc, ini->first_contact_local); in smc_connect_rdma()
819 smc->connect_nonblock = 0; in smc_connect_rdma()
844 static int smc_connect_ism(struct smc_sock *smc, in smc_connect_ism() argument
863 /* there is only one lgr role for SMC-D; use server lock */ in smc_connect_ism()
865 rc = smc_conn_create(smc, ini); in smc_connect_ism()
872 rc = smc_buf_create(smc, true); in smc_connect_ism()
878 smc_conn_save_peer_info(smc, aclc); in smc_connect_ism()
879 smc_close_init(smc); in smc_connect_ism()
880 smc_rx_init(smc); in smc_connect_ism()
881 smc_tx_init(smc); in smc_connect_ism()
883 rc = smc_clc_send_confirm(smc, ini->first_contact_local, in smc_connect_ism()
889 smc_copy_sock_settings_to_clc(smc); in smc_connect_ism()
890 smc->connect_nonblock = 0; in smc_connect_ism()
891 if (smc->sk.sk_state == SMC_INIT) in smc_connect_ism()
892 smc->sk.sk_state = SMC_ACTIVE; in smc_connect_ism()
896 smc_connect_abort(smc, ini->first_contact_local); in smc_connect_ism()
898 smc->connect_nonblock = 0; in smc_connect_ism()
922 static int __smc_connect(struct smc_sock *smc) in __smc_connect() argument
931 if (smc->use_fallback) in __smc_connect()
932 return smc_connect_fallback(smc, smc->fallback_rsn); in __smc_connect()
934 /* if peer has not signalled SMC-capability, fall back */ in __smc_connect()
935 if (!tcp_sk(smc->clcsock->sk)->syn_smc) in __smc_connect()
936 return smc_connect_fallback(smc, SMC_CLC_DECL_PEERNOSMC); in __smc_connect()
938 /* IPSec connections opt out of SMC optimizations */ in __smc_connect()
939 if (using_ipsec(smc)) in __smc_connect()
940 return smc_connect_decline_fallback(smc, SMC_CLC_DECL_IPSEC, in __smc_connect()
945 return smc_connect_decline_fallback(smc, SMC_CLC_DECL_MEM, in __smc_connect()
954 if (smc_vlan_by_tcpsk(smc->clcsock, ini)) { in __smc_connect()
963 rc = smc_find_proposal_devices(smc, ini); in __smc_connect()
976 rc = smc_connect_clc(smc, aclc2, ini); in __smc_connect()
980 /* check if smc modes and versions of CLC proposal and accept match */ in __smc_connect()
989 rc = smc_connect_rdma(smc, aclc, ini); in __smc_connect()
991 rc = smc_connect_ism(smc, aclc, ini); in __smc_connect()
995 smc_connect_ism_vlan_cleanup(smc, ini); in __smc_connect()
1001 smc_connect_ism_vlan_cleanup(smc, ini); in __smc_connect()
1005 return smc_connect_decline_fallback(smc, rc, version); in __smc_connect()
1010 struct smc_sock *smc = container_of(work, struct smc_sock, in smc_connect_work() local
1012 long timeo = smc->sk.sk_sndtimeo; in smc_connect_work()
1017 lock_sock(smc->clcsock->sk); in smc_connect_work()
1018 if (smc->clcsock->sk->sk_err) { in smc_connect_work()
1019 smc->sk.sk_err = smc->clcsock->sk->sk_err; in smc_connect_work()
1020 } else if ((1 << smc->clcsock->sk->sk_state) & in smc_connect_work()
1022 rc = sk_stream_wait_connect(smc->clcsock->sk, &timeo); in smc_connect_work()
1024 ((1 << smc->clcsock->sk->sk_state) & in smc_connect_work()
1028 release_sock(smc->clcsock->sk); in smc_connect_work()
1029 lock_sock(&smc->sk); in smc_connect_work()
1030 if (rc != 0 || smc->sk.sk_err) { in smc_connect_work()
1031 smc->sk.sk_state = SMC_CLOSED; in smc_connect_work()
1033 smc->sk.sk_err = EPIPE; in smc_connect_work()
1035 smc->sk.sk_err = -sock_intr_errno(timeo); in smc_connect_work()
1036 sock_put(&smc->sk); /* passive closing */ in smc_connect_work()
1040 rc = __smc_connect(smc); in smc_connect_work()
1042 smc->sk.sk_err = -rc; in smc_connect_work()
1045 if (!sock_flag(&smc->sk, SOCK_DEAD)) { in smc_connect_work()
1046 if (smc->sk.sk_err) { in smc_connect_work()
1047 smc->sk.sk_state_change(&smc->sk); in smc_connect_work()
1049 smc->clcsock->sk->sk_write_space(smc->clcsock->sk); in smc_connect_work()
1050 smc->sk.sk_write_space(&smc->sk); in smc_connect_work()
1053 release_sock(&smc->sk); in smc_connect_work()
1060 struct smc_sock *smc; in smc_connect() local
1063 smc = smc_sk(sk); in smc_connect()
1065 /* separate smc parameter checking to be safe */ in smc_connect()
1083 smc_copy_sock_settings_to_clc(smc); in smc_connect()
1084 tcp_sk(smc->clcsock->sk)->syn_smc = 1; in smc_connect()
1085 if (smc->connect_nonblock) { in smc_connect()
1089 rc = kernel_connect(smc->clcsock, addr, alen, flags); in smc_connect()
1093 sock_hold(&smc->sk); /* sock put in passive closing */ in smc_connect()
1094 if (smc->use_fallback) in smc_connect()
1097 if (queue_work(smc_hs_wq, &smc->connect_work)) in smc_connect()
1098 smc->connect_nonblock = 1; in smc_connect()
1101 rc = __smc_connect(smc); in smc_connect()
1150 /* new clcsock has inherited the smc listen-specific sk_data_ready in smc_clcsock_accept()
1222 struct smc_sock *smc = smc_sk(sk); in smc_close_non_accepted() local
1229 __smc_release(smc); in smc_close_non_accepted()
1235 static int smcr_serv_conf_first_link(struct smc_sock *smc) in smcr_serv_conf_first_link() argument
1237 struct smc_link *link = smc->conn.lnk; in smcr_serv_conf_first_link()
1241 if (smcr_link_reg_rmb(link, smc->conn.rmb_desc)) in smcr_serv_conf_first_link()
1255 rc = smc_clc_wait_msg(smc, &dclc, sizeof(dclc), in smcr_serv_conf_first_link()
1266 smc->conn.rmb_desc->is_conf_rkey = true; in smcr_serv_conf_first_link()
1418 /* listen worker: initialize connection and buffers for SMC-D */
1686 /* check if peer is smc capable */ in smc_listen_work()
1695 * wait for and receive SMC Proposal CLC message in smc_listen_work()
1709 /* IPSec connections opt out of SMC optimizations */ in smc_listen_work()
1736 /* send SMC Accept CLC message */ in smc_listen_work()
1742 /* SMC-D does not need this lock any more */ in smc_listen_work()
1746 /* receive SMC Confirm CLC message */ in smc_listen_work()
1832 struct smc_sock *smc; in smc_listen() local
1835 smc = smc_sk(sk); in smc_listen()
1840 smc->connect_nonblock) in smc_listen()
1849 * them to the clc socket -- copy smc socket options to clc socket in smc_listen()
1851 smc_copy_sock_settings_to_clc(smc); in smc_listen()
1852 if (!smc->use_fallback) in smc_listen()
1853 tcp_sk(smc->clcsock->sk)->syn_smc = 1; in smc_listen()
1856 * smc-specific sk_data_ready function in smc_listen()
1858 smc->clcsk_data_ready = smc->clcsock->sk->sk_data_ready; in smc_listen()
1859 smc->clcsock->sk->sk_data_ready = smc_clcsock_data_ready; in smc_listen()
1860 smc->clcsock->sk->sk_user_data = in smc_listen()
1861 (void *)((uintptr_t)smc | SK_USER_DATA_NOCOPY); in smc_listen()
1862 rc = kernel_listen(smc->clcsock, backlog); in smc_listen()
1947 struct smc_sock *smc; in smc_getname() local
1953 smc = smc_sk(sock->sk); in smc_getname()
1955 return smc->clcsock->ops->getname(smc->clcsock, addr, peer); in smc_getname()
1961 struct smc_sock *smc; in smc_sendmsg() local
1964 smc = smc_sk(sk); in smc_sendmsg()
1972 if (sk->sk_state == SMC_INIT && !smc->connect_nonblock) { in smc_sendmsg()
1973 smc_switch_to_fallback(smc); in smc_sendmsg()
1974 smc->fallback_rsn = SMC_CLC_DECL_OPTUNSUPP; in smc_sendmsg()
1981 if (smc->use_fallback) in smc_sendmsg()
1982 rc = smc->clcsock->ops->sendmsg(smc->clcsock, msg, len); in smc_sendmsg()
1984 rc = smc_tx_sendmsg(smc, msg, len); in smc_sendmsg()
1994 struct smc_sock *smc; in smc_recvmsg() local
1997 smc = smc_sk(sk); in smc_recvmsg()
2014 if (smc->use_fallback) { in smc_recvmsg()
2015 rc = smc->clcsock->ops->recvmsg(smc->clcsock, msg, len, flags); in smc_recvmsg()
2018 rc = smc_rx_recvmsg(smc, msg, NULL, len, flags); in smc_recvmsg()
2043 struct smc_sock *smc; in smc_poll() local
2049 smc = smc_sk(sock->sk); in smc_poll()
2050 if (smc->use_fallback) { in smc_poll()
2052 mask = smc->clcsock->ops->poll(file, smc->clcsock, wait); in smc_poll()
2053 sk->sk_err = smc->clcsock->sk->sk_err; in smc_poll()
2065 } else if (smc->use_fallback) { /* as result of connect_work()*/ in smc_poll()
2066 mask |= smc->clcsock->ops->poll(file, smc->clcsock, in smc_poll()
2068 sk->sk_err = smc->clcsock->sk->sk_err; in smc_poll()
2071 atomic_read(&smc->conn.sndbuf_space)) || in smc_poll()
2078 if (atomic_read(&smc->conn.bytes_to_rcv)) in smc_poll()
2084 if (smc->conn.urg_state == SMC_URG_VALID) in smc_poll()
2095 struct smc_sock *smc; in smc_shutdown() local
2099 smc = smc_sk(sk); in smc_shutdown()
2114 if (smc->use_fallback) { in smc_shutdown()
2115 rc = kernel_sock_shutdown(smc->clcsock, how); in smc_shutdown()
2116 sk->sk_shutdown = smc->clcsock->sk->sk_shutdown; in smc_shutdown()
2123 rc = smc_close_active(smc); in smc_shutdown()
2126 rc = smc_close_shutdown_write(smc); in smc_shutdown()
2133 if (smc->clcsock) in smc_shutdown()
2134 rc1 = kernel_sock_shutdown(smc->clcsock, how); in smc_shutdown()
2147 struct smc_sock *smc; in smc_setsockopt() local
2150 smc = smc_sk(sk); in smc_setsockopt()
2155 if (unlikely(!smc->clcsock->ops->setsockopt)) in smc_setsockopt()
2158 rc = smc->clcsock->ops->setsockopt(smc->clcsock, level, optname, in smc_setsockopt()
2160 if (smc->clcsock->sk->sk_err) { in smc_setsockopt()
2161 sk->sk_err = smc->clcsock->sk->sk_err; in smc_setsockopt()
2171 if (rc || smc->use_fallback) in smc_setsockopt()
2179 /* option not supported by SMC */ in smc_setsockopt()
2180 if (sk->sk_state == SMC_INIT && !smc->connect_nonblock) { in smc_setsockopt()
2181 smc_switch_to_fallback(smc); in smc_setsockopt()
2182 smc->fallback_rsn = SMC_CLC_DECL_OPTUNSUPP; in smc_setsockopt()
2192 mod_delayed_work(smc->conn.lgr->tx_wq, in smc_setsockopt()
2193 &smc->conn.tx_work, 0); in smc_setsockopt()
2201 mod_delayed_work(smc->conn.lgr->tx_wq, in smc_setsockopt()
2202 &smc->conn.tx_work, 0); in smc_setsockopt()
2206 smc->sockopt_defer_accept = val; in smc_setsockopt()
2220 struct smc_sock *smc; in smc_getsockopt() local
2222 smc = smc_sk(sock->sk); in smc_getsockopt()
2224 if (unlikely(!smc->clcsock->ops->getsockopt)) in smc_getsockopt()
2226 return smc->clcsock->ops->getsockopt(smc->clcsock, level, optname, in smc_getsockopt()
2235 struct smc_sock *smc; in smc_ioctl() local
2238 smc = smc_sk(sock->sk); in smc_ioctl()
2239 conn = &smc->conn; in smc_ioctl()
2240 lock_sock(&smc->sk); in smc_ioctl()
2241 if (smc->use_fallback) { in smc_ioctl()
2242 if (!smc->clcsock) { in smc_ioctl()
2243 release_sock(&smc->sk); in smc_ioctl()
2246 answ = smc->clcsock->ops->ioctl(smc->clcsock, cmd, arg); in smc_ioctl()
2247 release_sock(&smc->sk); in smc_ioctl()
2252 if (smc->sk.sk_state == SMC_LISTEN) { in smc_ioctl()
2253 release_sock(&smc->sk); in smc_ioctl()
2256 if (smc->sk.sk_state == SMC_INIT || in smc_ioctl()
2257 smc->sk.sk_state == SMC_CLOSED) in smc_ioctl()
2260 answ = atomic_read(&smc->conn.bytes_to_rcv); in smc_ioctl()
2264 if (smc->sk.sk_state == SMC_LISTEN) { in smc_ioctl()
2265 release_sock(&smc->sk); in smc_ioctl()
2268 if (smc->sk.sk_state == SMC_INIT || in smc_ioctl()
2269 smc->sk.sk_state == SMC_CLOSED) in smc_ioctl()
2272 answ = smc->conn.sndbuf_desc->len - in smc_ioctl()
2273 atomic_read(&smc->conn.sndbuf_space); in smc_ioctl()
2277 if (smc->sk.sk_state == SMC_LISTEN) { in smc_ioctl()
2278 release_sock(&smc->sk); in smc_ioctl()
2281 if (smc->sk.sk_state == SMC_INIT || in smc_ioctl()
2282 smc->sk.sk_state == SMC_CLOSED) in smc_ioctl()
2285 answ = smc_tx_prepared_sends(&smc->conn); in smc_ioctl()
2288 if (smc->sk.sk_state == SMC_LISTEN) { in smc_ioctl()
2289 release_sock(&smc->sk); in smc_ioctl()
2292 if (smc->sk.sk_state == SMC_INIT || in smc_ioctl()
2293 smc->sk.sk_state == SMC_CLOSED) { in smc_ioctl()
2303 release_sock(&smc->sk); in smc_ioctl()
2306 release_sock(&smc->sk); in smc_ioctl()
2315 struct smc_sock *smc; in smc_sendpage() local
2318 smc = smc_sk(sk); in smc_sendpage()
2325 if (smc->use_fallback) in smc_sendpage()
2326 rc = kernel_sendpage(smc->clcsock, page, offset, in smc_sendpage()
2346 struct smc_sock *smc; in smc_splice_read() local
2349 smc = smc_sk(sk); in smc_splice_read()
2366 if (smc->use_fallback) { in smc_splice_read()
2367 rc = smc->clcsock->ops->splice_read(smc->clcsock, ppos, in smc_splice_read()
2378 rc = smc_rx_recvmsg(smc, NULL, pipe, len, flags); in smc_splice_read()
2413 struct smc_sock *smc; in smc_create() local
2432 smc = smc_sk(sk); in smc_create()
2433 smc->use_fallback = false; /* assume rdma capability first */ in smc_create()
2434 smc->fallback_rsn = 0; in smc_create()
2436 &smc->clcsock); in smc_create()
2441 smc->sk.sk_sndbuf = max(smc->clcsock->sk->sk_sndbuf, SMC_BUF_MIN_SIZE); in smc_create()
2442 smc->sk.sk_rcvbuf = max(smc->clcsock->sk->sk_rcvbuf, SMC_BUF_MIN_SIZE); in smc_create()
2583 MODULE_DESCRIPTION("smc socket address family");