Lines Matching +full:smc +full:- +full:id
1 // SPDX-License-Identifier: GPL-2.0
3 * Shared Memory Communications over RDMA (SMC-R) and RoCE
20 #include <linux/smc.h>
26 #include "smc.h"
62 if (lgr->is_smcd) {
63 *lgr_lock = &lgr->smcd->lgr_lock;
64 return &lgr->smcd->lgr_list;
73 atomic_inc(&lnk->smcibdev->lnk_cnt_by_port[lnk->ibport - 1]);
78 atomic_dec(&lnk->smcibdev->lnk_cnt_by_port[lnk->ibport - 1]);
85 * otherwise there is a risk of out-of-sync link groups.
87 if (!lgr->freeing) {
88 mod_delayed_work(system_percpu_wq, &lgr->free_work,
89 (!lgr->is_smcd && lgr->role == SMC_CLNT) ?
98 * @smc connection to register
104 u32 token = conn->alert_token_local;
106 link = &conn->lgr->conns_all.rb_node;
112 if (cur->alert_token_local > token)
113 link = &parent->rb_left;
115 link = &parent->rb_right;
118 rb_link_node(&conn->alert_node, parent, link);
119 rb_insert_color(&conn->alert_node, &conn->lgr->conns_all);
122 /* assign an SMC-R link to the connection */
130 conn->lnk = NULL; /* reset conn->lnk first */
132 struct smc_link *lnk = &conn->lgr->lnk[i];
134 if (lnk->state != expected || lnk->link_is_asym)
136 if (conn->lgr->role == SMC_CLNT) {
137 conn->lnk = lnk; /* temporary, SMC server assigns link*/
140 if (conn->lgr->conns_num % 2) {
144 lnk2 = &conn->lgr->lnk[j];
145 if (lnk2->state == expected &&
146 !lnk2->link_is_asym) {
147 conn->lnk = lnk2;
152 if (!conn->lnk)
153 conn->lnk = lnk;
156 if (!conn->lnk)
158 atomic_inc(&conn->lnk->conn_cnt);
169 struct smc_sock *smc = container_of(conn, struct smc_sock, conn);
173 if (!conn->lgr->is_smcd) {
176 conn->lgr = NULL;
183 sock_hold(&smc->sk); /* sock_put in smc_lgr_unregister_conn() */
184 while (!conn->alert_token_local) {
185 conn->alert_token_local = atomic_inc_return(&nexttoken);
186 if (smc_lgr_find_conn(conn->alert_token_local, conn->lgr))
187 conn->alert_token_local = 0;
190 conn->lgr->conns_num++;
198 struct smc_sock *smc = container_of(conn, struct smc_sock, conn);
199 struct smc_link_group *lgr = conn->lgr;
201 rb_erase(&conn->alert_node, &lgr->conns_all);
202 if (conn->lnk)
203 atomic_dec(&conn->lnk->conn_cnt);
204 lgr->conns_num--;
205 conn->alert_token_local = 0;
206 sock_put(&smc->sk); /* sock_hold in smc_lgr_register_conn() */
213 struct smc_link_group *lgr = conn->lgr;
217 write_lock_bh(&lgr->conns_lock);
218 if (conn->alert_token_local) {
221 write_unlock_bh(&lgr->conns_lock);
229 list_add(&buf_desc->list, buf_list);
231 lgr->alloc_rmbs += buf_desc->len;
232 lgr->alloc_rmbs +=
233 lgr->is_smcd ? sizeof(struct smcd_cdc_msg) : 0;
235 lgr->alloc_sndbufs += buf_desc->len;
243 list_del(&buf_desc->list);
245 lgr->alloc_rmbs -= buf_desc->len;
246 lgr->alloc_rmbs -=
247 lgr->is_smcd ? sizeof(struct smcd_cdc_msg) : 0;
249 lgr->alloc_sndbufs -= buf_desc->len;
263 nlh = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
268 if (cb_ctx->pos[0])
297 cb_ctx->pos[0] = 1;
298 return skb->len;
305 return skb->len;
317 if (nla_put_u8(skb, SMC_NLA_LGR_V2_VER, lgr->smc_version))
319 if (nla_put_u8(skb, SMC_NLA_LGR_V2_REL, lgr->peer_smc_release))
321 if (nla_put_u8(skb, SMC_NLA_LGR_V2_OS, lgr->peer_os))
323 memcpy(smc_host, lgr->peer_hostname, SMC_MAX_HOSTNAME_LEN);
327 memcpy(smc_eid, lgr->negotiated_eid, SMC_MAX_EID_LEN);
337 return -EMSGSIZE;
349 if (nla_put_u8(skb, SMC_NLA_LGR_R_V2_DIRECT, !lgr->uses_gateway))
351 if (nla_put_u8(skb, SMC_NLA_LGR_R_V2_MAX_CONNS, lgr->max_conns))
353 if (nla_put_u8(skb, SMC_NLA_LGR_R_V2_MAX_LINKS, lgr->max_links))
362 return -EMSGSIZE;
376 if (nla_put_u32(skb, SMC_NLA_LGR_R_ID, *((u32 *)&lgr->id)))
378 if (nla_put_u32(skb, SMC_NLA_LGR_R_CONNS_NUM, lgr->conns_num))
380 if (nla_put_u8(skb, SMC_NLA_LGR_R_ROLE, lgr->role))
382 if (nla_put_u8(skb, SMC_NLA_LGR_R_TYPE, lgr->type))
384 if (nla_put_u8(skb, SMC_NLA_LGR_R_BUF_TYPE, lgr->buf_type))
386 if (nla_put_u8(skb, SMC_NLA_LGR_R_VLAN_ID, lgr->vlan_id))
389 lgr->net->net_cookie, SMC_NLA_LGR_R_PAD))
391 memcpy(smc_target, lgr->pnet_id, SMC_MAX_PNETID_LEN);
395 if (nla_put_uint(skb, SMC_NLA_LGR_R_SNDBUF_ALLOC, lgr->alloc_sndbufs))
397 if (nla_put_uint(skb, SMC_NLA_LGR_R_RMB_ALLOC, lgr->alloc_rmbs))
399 if (lgr->smc_version > SMC_V1) {
414 return -EMSGSIZE;
428 nlh = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
438 if (nla_put_u8(skb, SMC_NLA_LINK_ID, link->link_id))
440 if (nla_put_u32(skb, SMC_NLA_LINK_STATE, link->state))
443 atomic_read(&link->conn_cnt)))
445 if (nla_put_u8(skb, SMC_NLA_LINK_IB_PORT, link->ibport))
447 if (nla_put_u32(skb, SMC_NLA_LINK_NET_DEV, link->ndev_ifidx))
449 snprintf(smc_ibname, sizeof(smc_ibname), "%s", link->ibname);
452 memcpy(&link_uid, link->link_uid, sizeof(link_uid));
455 memcpy(&link_uid, link->peer_link_uid, sizeof(link_uid));
459 smc_gid_be16_convert(smc_gid_target, link->gid);
463 smc_gid_be16_convert(smc_gid_target, link->peer_gid);
475 return -EMSGSIZE;
486 nlh = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
498 if (!smc_link_usable(&lgr->lnk[i]))
500 if (smc_nl_fill_lgr_link(lgr, &lgr->lnk[i], skb, cb))
509 return -EMSGSIZE;
519 int snum = cb_ctx->pos[0];
522 spin_lock_bh(&smc_lgr->lock);
523 list_for_each_entry(lgr, &smc_lgr->list, list) {
532 spin_unlock_bh(&smc_lgr->lock);
533 cb_ctx->pos[0] = num;
541 struct smcd_dev *smcd = lgr->smcd;
546 nlh = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
556 if (nla_put_u32(skb, SMC_NLA_LGR_D_ID, *((u32 *)&lgr->id)))
558 copy_to_smcdgid(&smcd_gid, &smcd->dibs->gid);
565 if (nla_put_u64_64bit(skb, SMC_NLA_LGR_D_PEER_GID, lgr->peer_gid.gid,
569 lgr->peer_gid.gid_ext, SMC_NLA_LGR_D_PAD))
571 if (nla_put_u8(skb, SMC_NLA_LGR_D_VLAN_ID, lgr->vlan_id))
573 if (nla_put_u32(skb, SMC_NLA_LGR_D_CONNS_NUM, lgr->conns_num))
575 if (nla_put_u32(skb, SMC_NLA_LGR_D_CHID, smc_ism_get_chid(lgr->smcd)))
577 if (nla_put_uint(skb, SMC_NLA_LGR_D_SNDBUF_ALLOC, lgr->alloc_sndbufs))
579 if (nla_put_uint(skb, SMC_NLA_LGR_D_DMB_ALLOC, lgr->alloc_rmbs))
581 memcpy(smc_pnet, lgr->smcd->pnetid, SMC_MAX_PNETID_LEN);
585 if (lgr->smc_version > SMC_V1) {
603 return -EMSGSIZE;
612 int snum = cb_ctx->pos[1];
615 spin_lock_bh(&dev->lgr_lock);
616 list_for_each_entry(lgr, &dev->lgr_list, list) {
617 if (!lgr->is_smcd)
628 spin_unlock_bh(&dev->lgr_lock);
629 cb_ctx->pos[1] = num;
639 int snum = cb_ctx->pos[0];
642 mutex_lock(&dev_list->mutex);
643 list_for_each_entry(smcd_dev, &dev_list->list, list) {
644 if (list_empty(&smcd_dev->lgr_list))
655 mutex_unlock(&dev_list->mutex);
656 cb_ctx->pos[0] = num;
665 return skb->len;
673 return skb->len;
679 return skb->len;
692 if (!list_empty(&lgr->list))
693 list_del_init(&lgr->list);
703 struct smc_link *lnk = &lgr->lnk[i];
706 lnk->state = SMC_LNK_INACTIVE;
708 wake_up_all(&lgr->llc_msg_waiter);
709 wake_up_all(&lgr->llc_flow_waiter);
724 if (lgr->freeing) {
728 read_lock_bh(&lgr->conns_lock);
729 conns = RB_EMPTY_ROOT(&lgr->conns_all);
730 read_unlock_bh(&lgr->conns_lock);
735 list_del_init(&lgr->list); /* remove from smc_lgr_list */
736 lgr->freeing = 1; /* this instance does the freeing, no new schedule */
738 cancel_delayed_work(&lgr->free_work);
740 if (!lgr->is_smcd && !lgr->terminating)
743 if (lgr->is_smcd && !lgr->terminating)
745 if (!lgr->is_smcd)
758 /* return next unique link id for the lgr */
766 link_id = ++lgr->next_link_id;
768 link_id = ++lgr->next_link_id;
770 if (smc_link_usable(&lgr->lnk[i]) &&
771 lgr->lnk[i].link_id == link_id)
781 struct smc_ib_device *smcibdev = link->smcibdev;
783 snprintf(link->ibname, sizeof(link->ibname), "%s",
784 smcibdev->ibdev->name);
785 link->ndev_ifidx = smcibdev->ndev_ifidx[link->ibport - 1];
795 if (lgr->smc_version == SMC_V2) {
796 lnk->smcibdev = ini->smcrv2.ib_dev_v2;
797 lnk->ibport = ini->smcrv2.ib_port_v2;
798 lnk->wr_rx_sge_cnt = lnk->smcibdev->ibdev->attrs.max_recv_sge < 2 ? 1 : 2;
799 lnk->wr_rx_buflen = smc_link_shared_v2_rxbuf(lnk) ?
802 lnk->smcibdev = ini->ib_dev;
803 lnk->ibport = ini->ib_port;
804 lnk->wr_rx_sge_cnt = 1;
805 lnk->wr_rx_buflen = SMC_WR_BUF_SIZE;
807 get_device(&lnk->smcibdev->ibdev->dev);
808 atomic_inc(&lnk->smcibdev->lnk_cnt);
809 refcount_set(&lnk->refcnt, 1); /* link refcnt is set to 1 */
810 lnk->clearing = 0;
811 lnk->path_mtu = lnk->smcibdev->pattr[lnk->ibport - 1].active_mtu;
812 lnk->link_id = smcr_next_link_id(lgr);
813 lnk->lgr = lgr;
815 lnk->link_idx = link_idx;
816 lnk->wr_rx_id_compl = 0;
819 atomic_set(&lnk->conn_cnt, 0);
821 INIT_WORK(&lnk->link_down_wrk, smc_link_down_work);
822 if (!lnk->smcibdev->initialized) {
823 rc = (int)smc_ib_setup_per_ibdev(lnk->smcibdev);
828 lnk->psn_initial = rndvec[0] + (rndvec[1] << 8) +
830 rc = smc_ib_determine_gid(lnk->smcibdev, lnk->ibport,
831 ini->vlan_id, lnk->gid, &lnk->sgid_index,
832 lgr->smc_version == SMC_V2 ?
833 &ini->smcrv2 : NULL);
851 lnk->state = SMC_LNK_ACTIVATING;
864 put_device(&lnk->smcibdev->ibdev->dev);
865 smcibdev = lnk->smcibdev;
867 lnk->state = SMC_LNK_UNUSED;
868 if (!atomic_dec_return(&smcibdev->lnk_cnt))
869 wake_up(&smcibdev->lnks_deleted);
874 /* create a new SMC link group */
875 static int smc_lgr_create(struct smc_sock *smc, struct smc_init_info *ini)
886 if (ini->is_smcd && ini->vlan_id) {
887 if (smc_ism_get_vlan(ini->ism_dev[ini->ism_selected],
888 ini->vlan_id)) {
899 lgr->tx_wq = alloc_workqueue("smc_tx_wq-%*phN", WQ_PERCPU, 0,
900 SMC_LGR_ID_SIZE, &lgr->id);
901 if (!lgr->tx_wq) {
902 rc = -ENOMEM;
905 lgr->is_smcd = ini->is_smcd;
906 lgr->sync_err = 0;
907 lgr->terminating = 0;
908 lgr->freeing = 0;
909 lgr->vlan_id = ini->vlan_id;
910 refcount_set(&lgr->refcnt, 1); /* set lgr refcnt to 1 */
911 init_rwsem(&lgr->sndbufs_lock);
912 init_rwsem(&lgr->rmbs_lock);
913 rwlock_init(&lgr->conns_lock);
915 INIT_LIST_HEAD(&lgr->sndbufs[i]);
916 INIT_LIST_HEAD(&lgr->rmbs[i]);
918 lgr->next_link_id = 0;
920 memcpy(&lgr->id, (u8 *)&smc_lgr_list.num, SMC_LGR_ID_SIZE);
921 INIT_DELAYED_WORK(&lgr->free_work, smc_lgr_free_work);
922 INIT_WORK(&lgr->terminate_work, smc_lgr_terminate_work);
923 lgr->conns_all = RB_ROOT;
924 if (ini->is_smcd) {
925 /* SMC-D specific settings */
926 smcd = ini->ism_dev[ini->ism_selected];
927 get_device(&smcd->dibs->dev);
928 lgr->peer_gid.gid =
929 ini->ism_peer_gid[ini->ism_selected].gid;
930 lgr->peer_gid.gid_ext =
931 ini->ism_peer_gid[ini->ism_selected].gid_ext;
932 lgr->smcd = ini->ism_dev[ini->ism_selected];
933 lgr_list = &ini->ism_dev[ini->ism_selected]->lgr_list;
934 lgr_lock = &lgr->smcd->lgr_lock;
935 lgr->smc_version = ini->smcd_version;
936 lgr->peer_shutdown = 0;
937 atomic_inc(&ini->ism_dev[ini->ism_selected]->lgr_cnt);
939 /* SMC-R specific settings */
943 lgr->role = smc->listen_smc ? SMC_SERV : SMC_CLNT;
944 lgr->smc_version = ini->smcr_version;
945 memcpy(lgr->peer_systemid, ini->peer_systemid,
947 if (lgr->smc_version == SMC_V2) {
948 ibdev = ini->smcrv2.ib_dev_v2;
949 ibport = ini->smcrv2.ib_port_v2;
950 lgr->saddr = ini->smcrv2.saddr;
951 lgr->uses_gateway = ini->smcrv2.uses_gateway;
952 memcpy(lgr->nexthop_mac, ini->smcrv2.nexthop_mac,
954 lgr->max_conns = ini->max_conns;
955 lgr->max_links = ini->max_links;
957 ibdev = ini->ib_dev;
958 ibport = ini->ib_port;
959 lgr->max_conns = SMC_CONN_PER_LGR_MAX;
960 lgr->max_links = SMC_LINKS_ADD_LNK_MAX;
962 memcpy(lgr->pnet_id, ibdev->pnetid[ibport - 1],
967 smc_llc_lgr_init(lgr, smc);
970 lnk = &lgr->lnk[link_idx];
976 lgr->net = smc_ib_net(lnk->smcibdev);
979 lgr->buf_type = lgr->net->smc.sysctl_smcr_buf_type;
982 smc->conn.lgr = lgr;
984 list_add_tail(&lgr->list, lgr_list);
989 destroy_workqueue(lgr->tx_wq);
993 if (ini->is_smcd && ini->vlan_id)
994 smc_ism_put_vlan(ini->ism_dev[ini->ism_selected], ini->vlan_id);
997 if (rc == -ENOMEM)
1007 int buffer_len = conn->peer_rmbe_size;
1012 smc_curs_copy(&prod, &conn->local_tx_ctrl.prod, conn);
1013 smc_curs_copy(&cons, &conn->local_rx_ctrl.cons, conn);
1015 space = buffer_len - smc_curs_diff(buffer_len, &cons, &prod);
1019 static int smc_switch_cursor(struct smc_sock *smc, struct smc_cdc_tx_pend *pend,
1022 struct smc_connection *conn = &smc->conn;
1027 smc_curs_copy(&conn->tx_curs_sent, &conn->tx_curs_fin, conn);
1028 smc_curs_copy(&fin, &conn->local_tx_ctrl_fin, conn);
1030 smc_curs_copy(&conn->local_tx_ctrl.prod, &fin, conn);
1031 smc_curs_copy(&cons, &conn->local_rx_ctrl.cons, conn);
1033 if (smc_curs_comp(conn->peer_rmbe_size, &cons, &fin) < 0) {
1037 diff = smc_curs_diff(conn->peer_rmbe_size, &fin, &cons);
1038 smc_curs_add(conn->sndbuf_desc->len,
1039 &conn->tx_curs_sent, diff);
1040 smc_curs_add(conn->sndbuf_desc->len,
1041 &conn->tx_curs_fin, diff);
1044 atomic_add(diff, &conn->sndbuf_space);
1047 smc_curs_add(conn->peer_rmbe_size,
1048 &conn->local_tx_ctrl.prod, diff);
1049 smc_curs_add(conn->peer_rmbe_size,
1050 &conn->local_tx_ctrl_fin, diff);
1053 atomic_set(&smc->conn.peer_rmbe_space, smc_write_space(conn));
1055 if (smc->sk.sk_state != SMC_INIT &&
1056 smc->sk.sk_state != SMC_CLOSED) {
1059 queue_delayed_work(conn->lgr->tx_wq, &conn->tx_work, 0);
1060 smc->sk.sk_data_ready(&smc->sk);
1063 smc_wr_tx_put_slot(conn->lnk,
1072 atomic_dec(&conn->lnk->conn_cnt);
1074 smcr_link_put(conn->lnk);
1075 conn->lnk = to_lnk;
1076 atomic_inc(&conn->lnk->conn_cnt);
1078 smcr_link_hold(conn->lnk);
1088 struct smc_sock *smc;
1096 if (!smc_link_active(&lgr->lnk[i]) || i == from_lnk->link_idx)
1098 if (is_dev_err && from_lnk->smcibdev == lgr->lnk[i].smcibdev &&
1099 from_lnk->ibport == lgr->lnk[i].ibport) {
1102 to_lnk = &lgr->lnk[i];
1110 read_lock_bh(&lgr->conns_lock);
1111 for (node = rb_first(&lgr->conns_all); node; node = rb_next(node)) {
1113 if (conn->lnk != from_lnk)
1115 smc = container_of(conn, struct smc_sock, conn);
1116 /* conn->lnk not yet set in SMC_INIT state */
1117 if (smc->sk.sk_state == SMC_INIT)
1119 if (smc->sk.sk_state == SMC_CLOSED ||
1120 smc->sk.sk_state == SMC_PEERCLOSEWAIT1 ||
1121 smc->sk.sk_state == SMC_PEERCLOSEWAIT2 ||
1122 smc->sk.sk_state == SMC_APPFINCLOSEWAIT ||
1123 smc->sk.sk_state == SMC_APPCLOSEWAIT1 ||
1124 smc->sk.sk_state == SMC_APPCLOSEWAIT2 ||
1125 smc->sk.sk_state == SMC_PEERFINCLOSEWAIT ||
1126 smc->sk.sk_state == SMC_PEERABORTWAIT ||
1127 smc->sk.sk_state == SMC_PROCESSABORT) {
1128 spin_lock_bh(&conn->send_lock);
1130 spin_unlock_bh(&conn->send_lock);
1133 sock_hold(&smc->sk);
1134 read_unlock_bh(&lgr->conns_lock);
1135 /* pre-fetch buffer outside of send_lock, might sleep */
1140 spin_lock_bh(&conn->send_lock);
1142 rc = smc_switch_cursor(smc, pend, wr_buf);
1143 spin_unlock_bh(&conn->send_lock);
1144 sock_put(&smc->sk);
1149 read_unlock_bh(&lgr->conns_lock);
1165 if (is_rmb && buf_desc->is_conf_rkey && !list_empty(&lgr->list)) {
1170 down_read(&lgr->llc_conf_mutex);
1172 buf_desc->is_conf_rkey = false;
1173 up_read(&lgr->llc_conf_mutex);
1174 smc_llc_flow_stop(lgr, &lgr->llc_flow_lcl);
1178 if (buf_desc->is_reg_err) {
1180 lock = is_rmb ? &lgr->rmbs_lock :
1181 &lgr->sndbufs_lock;
1189 memzero_explicit(buf_desc->cpu_addr, buf_desc->len);
1190 WRITE_ONCE(buf_desc->used, 0);
1196 struct smcd_dev *smcd = conn->lgr->smcd;
1197 u64 peer_token = conn->peer_token;
1199 if (!conn->sndbuf_desc)
1204 kfree(conn->sndbuf_desc);
1205 conn->sndbuf_desc = NULL;
1211 struct smc_sock *smc = container_of(conn, struct smc_sock, conn);
1212 bool is_smcd = lgr->is_smcd;
1215 if (conn->sndbuf_desc) {
1216 bufsize = conn->sndbuf_desc->len;
1217 if (!is_smcd && conn->sndbuf_desc->is_vm) {
1218 smcr_buf_unuse(conn->sndbuf_desc, false, lgr);
1220 memzero_explicit(conn->sndbuf_desc->cpu_addr, bufsize);
1221 WRITE_ONCE(conn->sndbuf_desc->used, 0);
1223 SMC_STAT_RMB_SIZE(smc, is_smcd, false, false, bufsize);
1225 if (conn->rmb_desc) {
1226 bufsize = conn->rmb_desc->len;
1228 smcr_buf_unuse(conn->rmb_desc, true, lgr);
1231 memzero_explicit(conn->rmb_desc->cpu_addr, bufsize);
1232 WRITE_ONCE(conn->rmb_desc->used, 0);
1234 SMC_STAT_RMB_SIZE(smc, is_smcd, true, false, bufsize);
1241 struct smc_link_group *lgr = conn->lgr;
1243 if (!lgr || conn->freed)
1249 conn->freed = 1;
1256 if (lgr->is_smcd) {
1257 if (!list_empty(&lgr->list))
1259 if (smc_ism_support_dmb_nocopy(lgr->smcd))
1261 tasklet_kill(&conn->rx_tsklet);
1264 if (current_work() != &conn->abort_work)
1265 cancel_work_sync(&conn->abort_work);
1267 if (!list_empty(&lgr->list)) {
1272 if (!lgr->conns_num)
1275 if (!lgr->is_smcd)
1276 smcr_link_put(conn->lnk); /* link_hold in smc_conn_create() */
1284 if (is_rmb || buf_desc->is_vm)
1285 buf_desc->is_reg_mr[lnk->link_idx] = false;
1286 if (!buf_desc->is_map_ib[lnk->link_idx])
1289 if ((is_rmb || buf_desc->is_vm) &&
1290 buf_desc->mr[lnk->link_idx]) {
1291 smc_ib_put_memory_region(buf_desc->mr[lnk->link_idx]);
1292 buf_desc->mr[lnk->link_idx] = NULL;
1299 sg_free_table(&buf_desc->sgt[lnk->link_idx]);
1300 buf_desc->is_map_ib[lnk->link_idx] = false;
1306 struct smc_link_group *lgr = lnk->lgr;
1311 down_write(&lgr->rmbs_lock);
1312 list_for_each_entry_safe(buf_desc, bf, &lgr->rmbs[i], list)
1314 up_write(&lgr->rmbs_lock);
1316 down_write(&lgr->sndbufs_lock);
1317 list_for_each_entry_safe(buf_desc, bf, &lgr->sndbufs[i],
1320 up_write(&lgr->sndbufs_lock);
1326 struct smc_link_group *lgr = lnk->lgr;
1330 lgr->rtokens[i][lnk->link_idx].rkey = 0;
1331 lgr->rtokens[i][lnk->link_idx].dma_addr = 0;
1337 struct smc_link_group *lgr = lnk->lgr;
1342 put_device(&lnk->smcibdev->ibdev->dev);
1343 smcibdev = lnk->smcibdev;
1345 lnk->state = SMC_LNK_UNUSED;
1346 if (!atomic_dec_return(&smcibdev->lnk_cnt))
1347 wake_up(&smcibdev->lnks_deleted);
1351 /* must be called under lgr->llc_conf_mutex lock */
1354 if (!lnk->lgr || lnk->clearing ||
1355 lnk->state == SMC_LNK_UNUSED)
1357 lnk->clearing = 1;
1358 lnk->peer_qpn = 0;
1371 refcount_inc(&lnk->refcnt);
1376 if (refcount_dec_and_test(&lnk->refcnt))
1386 smcr_buf_unmap_link(buf_desc, is_rmb, &lgr->lnk[i]);
1388 if (!buf_desc->is_vm && buf_desc->pages)
1389 __free_pages(buf_desc->pages, buf_desc->order);
1390 else if (buf_desc->is_vm && buf_desc->cpu_addr)
1391 vfree(buf_desc->cpu_addr);
1400 buf_desc->len += sizeof(struct smcd_cdc_msg);
1401 smc_ism_unregister_dmb(lgr->smcd, buf_desc);
1403 kfree(buf_desc->cpu_addr);
1411 if (lgr->is_smcd)
1425 buf_list = &lgr->rmbs[i];
1427 buf_list = &lgr->sndbufs[i];
1448 if (lgr->is_smcd) {
1449 if (!atomic_dec_return(&lgr->smcd->lgr_cnt))
1450 wake_up(&lgr->smcd->lgrs_deleted);
1464 if (!lgr->is_smcd) {
1465 down_write(&lgr->llc_conf_mutex);
1467 if (lgr->lnk[i].state != SMC_LNK_UNUSED)
1468 smcr_link_clear(&lgr->lnk[i], false);
1470 up_write(&lgr->llc_conf_mutex);
1474 destroy_workqueue(lgr->tx_wq);
1475 if (lgr->is_smcd) {
1476 smc_ism_put_vlan(lgr->smcd, lgr->vlan_id);
1477 put_device(&lgr->smcd->dibs->dev);
1484 refcount_inc(&lgr->refcnt);
1489 if (refcount_dec_and_test(&lgr->refcnt))
1493 static void smc_sk_wake_ups(struct smc_sock *smc)
1495 smc->sk.sk_write_space(&smc->sk);
1496 smc->sk.sk_data_ready(&smc->sk);
1497 smc->sk.sk_state_change(&smc->sk);
1503 struct smc_sock *smc = container_of(conn, struct smc_sock, conn);
1505 if (conn->lgr->is_smcd && conn->lgr->peer_shutdown)
1506 conn->local_tx_ctrl.conn_state_flags.peer_conn_abort = 1;
1509 conn->killed = 1;
1510 smc->sk.sk_err = ECONNABORTED;
1511 smc_sk_wake_ups(smc);
1512 if (conn->lgr->is_smcd) {
1514 if (smc_ism_support_dmb_nocopy(conn->lgr->smcd))
1517 tasklet_kill(&conn->rx_tsklet);
1519 tasklet_unlock_wait(&conn->rx_tsklet);
1524 smc_close_active_abort(smc);
1529 if (lgr->is_smcd) {
1532 u32 rsn = lgr->llc_termination_rsn;
1548 struct smc_sock *smc;
1551 if (lgr->terminating)
1553 /* cancel free_work sync, will terminate when lgr->freeing is set */
1554 cancel_delayed_work(&lgr->free_work);
1555 lgr->terminating = 1;
1558 read_lock_bh(&lgr->conns_lock);
1559 node = rb_first(&lgr->conns_all);
1561 read_unlock_bh(&lgr->conns_lock);
1563 smc = container_of(conn, struct smc_sock, conn);
1564 sock_hold(&smc->sk); /* sock_put below */
1565 lock_sock(&smc->sk);
1567 release_sock(&smc->sk);
1568 sock_put(&smc->sk); /* sock_hold above */
1569 read_lock_bh(&lgr->conns_lock);
1570 node = rb_first(&lgr->conns_all);
1572 read_unlock_bh(&lgr->conns_lock);
1584 if (list_empty(&lgr->list) || lgr->terminating || lgr->freeing) {
1588 list_del_init(&lgr->list);
1589 lgr->freeing = 1;
1591 schedule_work(&lgr->terminate_work);
1602 spin_lock_bh(&dev->lgr_lock);
1603 list_for_each_entry_safe(lgr, l, &dev->lgr_list, list) {
1604 if ((!peer_gid->gid ||
1605 (lgr->peer_gid.gid == peer_gid->gid &&
1607 lgr->peer_gid.gid_ext == peer_gid->gid_ext)) &&
1608 (vlan == VLAN_VID_MASK || lgr->vlan_id == vlan)) {
1609 if (peer_gid->gid) /* peer triggered termination */
1610 lgr->peer_shutdown = 1;
1611 list_move(&lgr->list, &lgr_free_list);
1612 lgr->freeing = 1;
1615 spin_unlock_bh(&dev->lgr_lock);
1619 list_del_init(&lgr->list);
1620 schedule_work(&lgr->terminate_work);
1624 /* Called when an SMCD device is removed or the smc module is unloaded */
1630 spin_lock_bh(&smcd->lgr_lock);
1631 list_splice_init(&smcd->lgr_list, &lgr_free_list);
1633 lgr->freeing = 1;
1634 spin_unlock_bh(&smcd->lgr_lock);
1637 list_del_init(&lgr->list);
1641 if (atomic_read(&smcd->lgr_cnt))
1642 wait_event(smcd->lgrs_deleted, !atomic_read(&smcd->lgr_cnt));
1645 /* Called when an SMCR device is removed or the smc module is unloaded.
1659 lgr->freeing = 1;
1663 if (lgr->lnk[i].smcibdev == smcibdev)
1664 smcr_link_down_cond_sched(&lgr->lnk[i]);
1671 list_del_init(&lgr->list);
1677 if (atomic_read(&smcibdev->lnk_cnt))
1678 wait_event(smcibdev->lnks_deleted,
1679 !atomic_read(&smcibdev->lnk_cnt));
1693 if (smc_link_usable(&lgr->lnk[i]))
1694 lgr->lnk[i].link_is_asym = false;
1695 if (lgr->type == new_type)
1697 lgr->type = new_type;
1699 switch (lgr->type) {
1716 pr_warn_ratelimited("smc: SMC-R lg %*phN net %llu state changed: "
1717 "%s, pnetid %.16s\n", SMC_LGR_ID_SIZE, &lgr->id,
1718 lgr->net->net_cookie, lgr_type, lgr->pnet_id);
1726 lgr->lnk[asym_lnk_idx].link_is_asym = true;
1735 struct smc_sock *smc = container_of(conn, struct smc_sock, conn);
1737 lock_sock(&smc->sk);
1739 release_sock(&smc->sk);
1740 sock_put(&smc->sk); /* sock_hold done by schedulers of abort_work */
1751 if (strncmp(smcibdev->pnetid[ibport - 1], lgr->pnet_id,
1753 lgr->type == SMC_LGR_SYMMETRIC ||
1754 lgr->type == SMC_LGR_ASYMMETRIC_PEER ||
1755 !rdma_dev_access_netns(smcibdev->ibdev, lgr->net))
1758 if (lgr->type == SMC_LGR_SINGLE && lgr->max_links <= 1)
1769 /* link is down - switch connections to alternate link,
1770 * must be called under lgr->llc_conf_mutex lock
1774 struct smc_link_group *lgr = lnk->lgr;
1778 if (!lgr || lnk->state == SMC_LNK_UNUSED || list_empty(&lgr->list))
1787 del_link_id = lnk->link_id;
1789 if (lgr->role == SMC_SERV) {
1793 if (lgr->llc_flow_lcl.type != SMC_LLC_FLOW_NONE) {
1795 up_write(&lgr->llc_conf_mutex);
1796 wait_event_timeout(lgr->llc_flow_waiter,
1797 (list_empty(&lgr->list) ||
1798 lgr->llc_flow_lcl.type == SMC_LLC_FLOW_NONE),
1800 down_write(&lgr->llc_conf_mutex);
1802 if (!list_empty(&lgr->list)) {
1808 wake_up(&lgr->llc_flow_waiter); /* wake up next waiter */
1812 /* must be called under lgr->llc_conf_mutex lock */
1815 if (smc_link_downing(&lnk->state)) {
1821 /* will get the lgr->llc_conf_mutex lock */
1824 if (smc_link_downing(&lnk->state)) {
1827 if (!schedule_work(&lnk->link_down_wrk))
1838 if (strncmp(smcibdev->pnetid[ibport - 1], lgr->pnet_id,
1841 if (list_empty(&lgr->list))
1844 struct smc_link *lnk = &lgr->lnk[i];
1847 lnk->smcibdev == smcibdev && lnk->ibport == ibport)
1857 struct smc_link_group *lgr = link->lgr;
1859 if (list_empty(&lgr->list))
1861 wake_up_all(&lgr->llc_msg_waiter);
1862 down_write(&lgr->llc_conf_mutex);
1864 up_write(&lgr->llc_conf_mutex);
1873 unsigned short *vlan_id = (unsigned short *)priv->data;
1891 ini->vlan_id = 0;
1895 dst = __sk_dst_get(clcsock->sk);
1898 rc = -ENODEV;
1903 ini->vlan_id = vlan_dev_vlan_id(ndev);
1907 priv.data = (void *)&ini->vlan_id;
1925 if (memcmp(lgr->peer_systemid, peer_systemid, SMC_SYSTEMID_LEN) ||
1926 lgr->role != role)
1930 lnk = &lgr->lnk[i];
1934 /* use verbs API to check netns, instead of lgr->net */
1935 if (!rdma_dev_access_netns(lnk->smcibdev->ibdev, net))
1937 if ((lgr->role == SMC_SERV || lnk->peer_qpn == clcqpn) &&
1938 !memcmp(lnk->peer_gid, peer_gid, SMC_GID_SIZE) &&
1940 !memcmp(lnk->peer_mac, peer_mac_v1, ETH_ALEN)))
1950 if (lgr->peer_gid.gid != peer_gid->gid ||
1951 lgr->smcd != smcismdev)
1955 lgr->peer_gid.gid_ext != peer_gid->gid_ext)
1961 /* create a new SMC connection (and a new link group if necessary) */
1962 int smc_conn_create(struct smc_sock *smc, struct smc_init_info *ini)
1964 struct smc_connection *conn = &smc->conn;
1965 struct net *net = sock_net(&smc->sk);
1972 lgr_list = ini->is_smcd ? &ini->ism_dev[ini->ism_selected]->lgr_list :
1974 lgr_lock = ini->is_smcd ? &ini->ism_dev[ini->ism_selected]->lgr_lock :
1976 ini->first_contact_local = 1;
1977 role = smc->listen_smc ? SMC_SERV : SMC_CLNT;
1978 if (role == SMC_CLNT && ini->first_contact_peer)
1985 write_lock_bh(&lgr->conns_lock);
1986 if ((ini->is_smcd ?
1987 smcd_lgr_match(lgr, ini->ism_dev[ini->ism_selected],
1988 &ini->ism_peer_gid[ini->ism_selected]) :
1989 smcr_lgr_match(lgr, ini->smcr_version,
1990 ini->peer_systemid,
1991 ini->peer_gid, ini->peer_mac, role,
1992 ini->ib_clcqpn, net)) &&
1993 !lgr->sync_err &&
1994 (ini->smcd_version == SMC_V2 ||
1995 lgr->vlan_id == ini->vlan_id) &&
1996 (role == SMC_CLNT || ini->is_smcd ||
1997 (lgr->conns_num < lgr->max_conns &&
1998 !bitmap_full(lgr->rtokens_used_mask, SMC_RMBS_PER_LGR_MAX)))) {
2000 ini->first_contact_local = 0;
2001 conn->lgr = lgr;
2003 write_unlock_bh(&lgr->conns_lock);
2004 if (!rc && delayed_work_pending(&lgr->free_work))
2005 cancel_delayed_work(&lgr->free_work);
2008 write_unlock_bh(&lgr->conns_lock);
2014 if (role == SMC_CLNT && !ini->first_contact_peer &&
2015 ini->first_contact_local) {
2024 if (ini->first_contact_local) {
2025 rc = smc_lgr_create(smc, ini);
2028 lgr = conn->lgr;
2029 write_lock_bh(&lgr->conns_lock);
2031 write_unlock_bh(&lgr->conns_lock);
2037 smc_lgr_hold(conn->lgr); /* lgr_put in smc_conn_free() */
2038 if (!conn->lgr->is_smcd)
2039 smcr_link_hold(conn->lnk); /* link_put in smc_conn_free() */
2040 conn->freed = 0;
2041 conn->local_tx_ctrl.common.type = SMC_CDC_MSG_TYPE;
2042 conn->local_tx_ctrl.len = SMC_WR_TX_SIZE;
2043 conn->urg_state = SMC_URG_READ;
2044 init_waitqueue_head(&conn->cdc_pend_tx_wq);
2045 INIT_WORK(&smc->conn.abort_work, smc_conn_abort_work);
2046 if (ini->is_smcd) {
2047 conn->rx_off = sizeof(struct smcd_cdc_msg);
2050 conn->rx_off = 0;
2053 spin_lock_init(&conn->acurs_lock);
2060 #define SMCD_DMBE_SIZES 6 /* 0 -> 16KB, 1 -> 32KB, .. 6 -> 1MB */
2061 #define SMCR_RMBE_SIZES 15 /* 0 -> 16KB, 1 -> 32KB, .. 15 -> 512MB */
2075 size = (size - 1) >> 14; /* convert to 16K multiple */
2107 if (cmpxchg(&buf_slot->used, 0, 1) == 0) {
2133 if (buf_desc->is_map_ib[lnk->link_idx])
2136 if (buf_desc->is_vm) {
2137 buf = buf_desc->cpu_addr;
2138 buf_size = buf_desc->len;
2139 offset = offset_in_page(buf_desc->cpu_addr);
2145 rc = sg_alloc_table(&buf_desc->sgt[lnk->link_idx], nents, GFP_KERNEL);
2149 if (buf_desc->is_vm) {
2151 for_each_sg(buf_desc->sgt[lnk->link_idx].sgl, sg, nents, i) {
2152 size = min_t(int, PAGE_SIZE - offset, buf_size);
2155 buf_size -= size;
2160 sg_set_buf(buf_desc->sgt[lnk->link_idx].sgl,
2161 buf_desc->cpu_addr, buf_desc->len);
2167 /* SMC protocol depends on mapping to one DMA address only */
2169 rc = -EAGAIN;
2173 buf_desc->is_dma_need_sync |=
2174 smc_ib_is_sg_need_sync(lnk, buf_desc) << lnk->link_idx;
2176 if (is_rmb || buf_desc->is_vm) {
2182 rc = smc_ib_get_memory_region(lnk->roce_pd, access_flags,
2183 buf_desc, lnk->link_idx);
2189 buf_desc->is_map_ib[lnk->link_idx] = true;
2196 sg_free_table(&buf_desc->sgt[lnk->link_idx]);
2201 * must be called under lgr->llc_conf_mutex lock
2205 if (list_empty(&link->lgr->list))
2206 return -ENOLINK;
2207 if (!buf_desc->is_reg_mr[link->link_idx]) {
2209 if (buf_desc->is_vm)
2210 buf_desc->mr[link->link_idx]->iova =
2211 (uintptr_t)buf_desc->cpu_addr;
2212 if (smc_wr_reg_send(link, buf_desc->mr[link->link_idx])) {
2213 buf_desc->is_reg_err = true;
2214 return -EFAULT;
2216 buf_desc->is_reg_mr[link->link_idx] = true;
2229 if (!buf_desc->used)
2243 struct smc_link_group *lgr = lnk->lgr;
2247 rc = _smcr_buf_map_lgr(lnk, &lgr->rmbs_lock,
2248 &lgr->rmbs[i], true);
2251 rc = _smcr_buf_map_lgr(lnk, &lgr->sndbufs_lock,
2252 &lgr->sndbufs[i], false);
2260 * must be called under lgr->llc_conf_mutex lock
2264 struct smc_link_group *lgr = lnk->lgr;
2269 down_write(&lgr->rmbs_lock);
2271 list_for_each_entry_safe(buf_desc, bf, &lgr->rmbs[i], list) {
2272 if (!buf_desc->used)
2276 up_write(&lgr->rmbs_lock);
2281 up_write(&lgr->rmbs_lock);
2283 if (lgr->buf_type == SMCR_PHYS_CONT_BUFS)
2287 down_write(&lgr->sndbufs_lock);
2289 list_for_each_entry_safe(buf_desc, bf, &lgr->sndbufs[i], list) {
2290 if (!buf_desc->used || !buf_desc->is_vm)
2294 up_write(&lgr->sndbufs_lock);
2299 up_write(&lgr->sndbufs_lock);
2311 return ERR_PTR(-ENOMEM);
2313 switch (lgr->buf_type) {
2316 buf_desc->order = get_order(bufsize);
2317 buf_desc->pages = alloc_pages(GFP_KERNEL | __GFP_NOWARN |
2320 buf_desc->order);
2321 if (buf_desc->pages) {
2322 buf_desc->cpu_addr =
2323 (void *)page_address(buf_desc->pages);
2324 buf_desc->len = bufsize;
2325 buf_desc->is_vm = false;
2328 if (lgr->buf_type == SMCR_PHYS_CONT_BUFS)
2332 buf_desc->order = get_order(bufsize);
2333 buf_desc->cpu_addr = vzalloc(PAGE_SIZE << buf_desc->order);
2334 if (!buf_desc->cpu_addr)
2336 buf_desc->pages = NULL;
2337 buf_desc->len = bufsize;
2338 buf_desc->is_vm = true;
2345 return ERR_PTR(-EAGAIN);
2357 down_read(&lgr->llc_conf_mutex);
2359 struct smc_link *lnk = &lgr->lnk[i];
2364 rc = -ENOMEM;
2370 up_read(&lgr->llc_conf_mutex);
2372 rc = -EINVAL;
2385 return ERR_PTR(-ENOMEM);
2390 if (rc == -ENOMEM)
2391 return ERR_PTR(-EAGAIN);
2392 if (rc == -ENOSPC)
2393 return ERR_PTR(-ENOSPC);
2394 return ERR_PTR(-EIO);
2396 buf_desc->pages = virt_to_page(buf_desc->cpu_addr);
2398 buf_desc->len = bufsize - sizeof(struct smcd_cdc_msg);
2400 buf_desc->cpu_addr = kzalloc(bufsize, GFP_KERNEL |
2403 if (!buf_desc->cpu_addr) {
2405 return ERR_PTR(-EAGAIN);
2407 buf_desc->len = bufsize;
2412 static int __smc_buf_create(struct smc_sock *smc, bool is_smcd, bool is_rmb)
2414 struct smc_buf_desc *buf_desc = ERR_PTR(-ENOMEM);
2415 struct smc_connection *conn = &smc->conn;
2416 struct smc_link_group *lgr = conn->lgr;
2424 bufsize = smc->sk.sk_rcvbuf / 2;
2427 bufsize = smc->sk.sk_sndbuf / 2;
2430 bufsize_comp >= 0; bufsize_comp--) {
2432 lock = &lgr->rmbs_lock;
2433 buf_list = &lgr->rmbs[bufsize_comp];
2435 lock = &lgr->sndbufs_lock;
2436 buf_list = &lgr->sndbufs[bufsize_comp];
2443 buf_desc->is_dma_need_sync = 0;
2444 SMC_STAT_RMB_SIZE(smc, is_smcd, is_rmb, true, bufsize);
2445 SMC_STAT_BUF_REUSE(smc, is_smcd, is_rmb);
2454 if (PTR_ERR(buf_desc) == -ENOMEM)
2459 SMC_STAT_RMB_DOWNGRADED(smc, is_smcd, is_rmb);
2464 SMC_STAT_RMB_ALLOC(smc, is_smcd, is_rmb);
2465 SMC_STAT_RMB_SIZE(smc, is_smcd, is_rmb, true, bufsize);
2466 buf_desc->used = 1;
2479 return -ENOMEM;
2484 conn->rmb_desc = buf_desc;
2485 conn->rmbe_size_comp = bufsize_comp;
2486 smc->sk.sk_rcvbuf = bufsize * 2;
2487 atomic_set(&conn->bytes_to_rcv, 0);
2488 conn->rmbe_update_limit =
2489 smc_rmb_wnd_update_limit(buf_desc->len);
2493 conn->sndbuf_desc = buf_desc;
2494 smc->sk.sk_sndbuf = bufsize * 2;
2495 atomic_set(&conn->sndbuf_space, bufsize);
2502 if (!conn->sndbuf_desc->is_dma_need_sync)
2504 if (!smc_conn_lgr_valid(conn) || conn->lgr->is_smcd ||
2505 !smc_link_active(conn->lnk))
2507 smc_ib_sync_sg_for_device(conn->lnk, conn->sndbuf_desc, DMA_TO_DEVICE);
2514 if (!conn->rmb_desc->is_dma_need_sync)
2516 if (!smc_conn_lgr_valid(conn) || conn->lgr->is_smcd)
2519 if (!smc_link_active(&conn->lgr->lnk[i]))
2521 smc_ib_sync_sg_for_cpu(&conn->lgr->lnk[i], conn->rmb_desc,
2526 /* create the send and receive buffer for an SMC socket;
2528 * (even though the SMC protocol allows more than one RMB-element per RMB,
2529 * the Linux implementation uses just one RMB-element per RMB, i.e. uses an
2532 int smc_buf_create(struct smc_sock *smc, bool is_smcd)
2538 smc_ism_support_dmb_nocopy(smc->conn.lgr->smcd))
2541 rc = __smc_buf_create(smc, is_smcd, false);
2547 rc = __smc_buf_create(smc, is_smcd, true);
2548 if (rc && smc->conn.sndbuf_desc) {
2549 down_write(&smc->conn.lgr->sndbufs_lock);
2550 smc_lgr_buf_list_del(smc->conn.lgr, false,
2551 smc->conn.sndbuf_desc);
2552 up_write(&smc->conn.lgr->sndbufs_lock);
2553 smc_buf_free(smc->conn.lgr, false, smc->conn.sndbuf_desc);
2554 smc->conn.sndbuf_desc = NULL;
2559 int smcd_buf_attach(struct smc_sock *smc)
2561 struct smc_connection *conn = &smc->conn;
2562 struct smcd_dev *smcd = conn->lgr->smcd;
2563 u64 peer_token = conn->peer_token;
2569 return -ENOMEM;
2580 smc->sk.sk_sndbuf = buf_desc->len;
2581 buf_desc->cpu_addr =
2582 (u8 *)buf_desc->cpu_addr + sizeof(struct smcd_cdc_msg);
2583 buf_desc->len -= sizeof(struct smcd_cdc_msg);
2584 conn->sndbuf_desc = buf_desc;
2585 conn->sndbuf_desc->used = 1;
2586 atomic_set(&conn->sndbuf_space, conn->sndbuf_desc->len);
2598 for_each_clear_bit(i, lgr->rtokens_used_mask, SMC_RMBS_PER_LGR_MAX) {
2599 if (!test_and_set_bit(i, lgr->rtokens_used_mask))
2602 return -ENOSPC;
2611 if (test_bit(i, lgr->rtokens_used_mask) &&
2612 lgr->rtokens[i][lnk_idx].rkey == rkey)
2615 return -ENOENT;
2625 if (rtok_idx == -ENOENT)
2627 lgr->rtokens[rtok_idx][link_idx_new].rkey = ntohl(nw_rkey);
2628 lgr->rtokens[rtok_idx][link_idx_new].dma_addr = be64_to_cpu(nw_vaddr);
2641 if (lgr->lnk[link_idx].link_id == link_id) {
2648 lgr->rtokens[rtok_idx][link_idx].rkey = rkey;
2649 lgr->rtokens[rtok_idx][link_idx].dma_addr = dma_addr;
2661 if (lgr->rtokens[i][lnk->link_idx].rkey == rkey &&
2662 lgr->rtokens[i][lnk->link_idx].dma_addr == dma_addr &&
2663 test_bit(i, lgr->rtokens_used_mask)) {
2671 lgr->rtokens[i][lnk->link_idx].rkey = rkey;
2672 lgr->rtokens[i][lnk->link_idx].dma_addr = dma_addr;
2684 if (lgr->rtokens[i][lnk->link_idx].rkey == rkey &&
2685 test_bit(i, lgr->rtokens_used_mask)) {
2687 lgr->rtokens[i][j].rkey = 0;
2688 lgr->rtokens[i][j].dma_addr = 0;
2690 clear_bit(i, lgr->rtokens_used_mask);
2694 return -ENOENT;
2702 conn->rtoken_idx = smc_rtoken_add(lnk, clc->r0.rmb_dma_addr,
2703 clc->r0.rmb_rkey);
2704 if (conn->rtoken_idx < 0)
2705 return conn->rtoken_idx;
2719 set_bit(i, smcibdev->ports_going_away);
2725 smcd->going_away = 1;
2730 /* Clean up all SMC link groups */