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-rw-r--r--net/smc/af_smc.c109
-rw-r--r--net/smc/smc.h1
-rw-r--r--net/smc/smc_cdc.c3
-rw-r--r--net/smc/smc_clc.c3
-rw-r--r--net/smc/smc_core.c193
-rw-r--r--net/smc/smc_core.h33
-rw-r--r--net/smc/smc_diag.c22
-rw-r--r--net/smc/smc_ib.c2
-rw-r--r--net/smc/smc_ib.h7
-rw-r--r--net/smc/smc_ism.c1
-rw-r--r--net/smc/smc_llc.c19
-rw-r--r--net/smc/smc_pnet.c31
-rw-r--r--net/smc/smc_tracepoint.h23
-rw-r--r--net/smc/smc_wr.c15
-rw-r--r--net/smc/smc_wr.h4
15 files changed, 341 insertions, 125 deletions
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index 1c9289f56dc4..961854e56736 100644
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -89,8 +89,8 @@ int smc_hash_sk(struct sock *sk)
write_lock_bh(&h->lock);
sk_add_node(sk, head);
- sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1);
write_unlock_bh(&h->lock);
+ sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1);
return 0;
}
@@ -632,10 +632,16 @@ static int smc_connect_decline_fallback(struct smc_sock *smc, int reason_code,
static void smc_conn_abort(struct smc_sock *smc, int local_first)
{
- if (local_first)
- smc_lgr_cleanup_early(&smc->conn);
- else
- smc_conn_free(&smc->conn);
+ struct smc_connection *conn = &smc->conn;
+ struct smc_link_group *lgr = conn->lgr;
+ bool lgr_valid = false;
+
+ if (smc_conn_lgr_valid(conn))
+ lgr_valid = true;
+
+ smc_conn_free(conn);
+ if (local_first && lgr_valid)
+ smc_lgr_cleanup_early(lgr);
}
/* check if there is a rdma device available for this connection. */
@@ -2700,8 +2706,8 @@ static const struct proto_ops smc_sock_ops = {
.splice_read = smc_splice_read,
};
-static int smc_create(struct net *net, struct socket *sock, int protocol,
- int kern)
+static int __smc_create(struct net *net, struct socket *sock, int protocol,
+ int kern, struct socket *clcsock)
{
int family = (protocol == SMCPROTO_SMC6) ? PF_INET6 : PF_INET;
struct smc_sock *smc;
@@ -2726,12 +2732,19 @@ static int smc_create(struct net *net, struct socket *sock, int protocol,
smc = smc_sk(sk);
smc->use_fallback = false; /* assume rdma capability first */
smc->fallback_rsn = 0;
- rc = sock_create_kern(net, family, SOCK_STREAM, IPPROTO_TCP,
- &smc->clcsock);
- if (rc) {
- sk_common_release(sk);
- goto out;
+
+ rc = 0;
+ if (!clcsock) {
+ rc = sock_create_kern(net, family, SOCK_STREAM, IPPROTO_TCP,
+ &smc->clcsock);
+ if (rc) {
+ sk_common_release(sk);
+ goto out;
+ }
+ } else {
+ smc->clcsock = clcsock;
}
+
smc->sk.sk_sndbuf = max(smc->clcsock->sk->sk_sndbuf, SMC_BUF_MIN_SIZE);
smc->sk.sk_rcvbuf = max(smc->clcsock->sk->sk_rcvbuf, SMC_BUF_MIN_SIZE);
@@ -2739,12 +2752,76 @@ out:
return rc;
}
+static int smc_create(struct net *net, struct socket *sock, int protocol,
+ int kern)
+{
+ return __smc_create(net, sock, protocol, kern, NULL);
+}
+
static const struct net_proto_family smc_sock_family_ops = {
.family = PF_SMC,
.owner = THIS_MODULE,
.create = smc_create,
};
+static int smc_ulp_init(struct sock *sk)
+{
+ struct socket *tcp = sk->sk_socket;
+ struct net *net = sock_net(sk);
+ struct socket *smcsock;
+ int protocol, ret;
+
+ /* only TCP can be replaced */
+ if (tcp->type != SOCK_STREAM || sk->sk_protocol != IPPROTO_TCP ||
+ (sk->sk_family != AF_INET && sk->sk_family != AF_INET6))
+ return -ESOCKTNOSUPPORT;
+ /* don't handle wq now */
+ if (tcp->state != SS_UNCONNECTED || !tcp->file || tcp->wq.fasync_list)
+ return -ENOTCONN;
+
+ if (sk->sk_family == AF_INET)
+ protocol = SMCPROTO_SMC;
+ else
+ protocol = SMCPROTO_SMC6;
+
+ smcsock = sock_alloc();
+ if (!smcsock)
+ return -ENFILE;
+
+ smcsock->type = SOCK_STREAM;
+ __module_get(THIS_MODULE); /* tried in __tcp_ulp_find_autoload */
+ ret = __smc_create(net, smcsock, protocol, 1, tcp);
+ if (ret) {
+ sock_release(smcsock); /* module_put() which ops won't be NULL */
+ return ret;
+ }
+
+ /* replace tcp socket to smc */
+ smcsock->file = tcp->file;
+ smcsock->file->private_data = smcsock;
+ smcsock->file->f_inode = SOCK_INODE(smcsock); /* replace inode when sock_close */
+ smcsock->file->f_path.dentry->d_inode = SOCK_INODE(smcsock); /* dput() in __fput */
+ tcp->file = NULL;
+
+ return ret;
+}
+
+static void smc_ulp_clone(const struct request_sock *req, struct sock *newsk,
+ const gfp_t priority)
+{
+ struct inet_connection_sock *icsk = inet_csk(newsk);
+
+ /* don't inherit ulp ops to child when listen */
+ icsk->icsk_ulp_ops = NULL;
+}
+
+static struct tcp_ulp_ops smc_ulp_ops __read_mostly = {
+ .name = "smc",
+ .owner = THIS_MODULE,
+ .init = smc_ulp_init,
+ .clone = smc_ulp_clone,
+};
+
unsigned int smc_net_id;
static __net_init int smc_net_init(struct net *net)
@@ -2855,6 +2932,12 @@ static int __init smc_init(void)
goto out_sock;
}
+ rc = tcp_register_ulp(&smc_ulp_ops);
+ if (rc) {
+ pr_err("%s: tcp_ulp_register fails with %d\n", __func__, rc);
+ goto out_sock;
+ }
+
static_branch_enable(&tcp_have_smc);
return 0;
@@ -2883,6 +2966,7 @@ out_pernet_subsys:
static void __exit smc_exit(void)
{
static_branch_disable(&tcp_have_smc);
+ tcp_unregister_ulp(&smc_ulp_ops);
sock_unregister(PF_SMC);
smc_core_exit();
smc_ib_unregister_client();
@@ -2905,3 +2989,4 @@ MODULE_AUTHOR("Ursula Braun <[email protected]>");
MODULE_DESCRIPTION("smc socket address family");
MODULE_LICENSE("GPL");
MODULE_ALIAS_NETPROTO(PF_SMC);
+MODULE_ALIAS_TCP_ULP("smc");
diff --git a/net/smc/smc.h b/net/smc/smc.h
index 1a4fc1c6c4ab..3d0b8e300deb 100644
--- a/net/smc/smc.h
+++ b/net/smc/smc.h
@@ -221,6 +221,7 @@ struct smc_connection {
*/
u64 peer_token; /* SMC-D token of peer */
u8 killed : 1; /* abnormal termination */
+ u8 freed : 1; /* normal termiation */
u8 out_of_sync : 1; /* out of sync with peer */
};
diff --git a/net/smc/smc_cdc.c b/net/smc/smc_cdc.c
index 84c8a4374fdd..9d5a97168969 100644
--- a/net/smc/smc_cdc.c
+++ b/net/smc/smc_cdc.c
@@ -197,7 +197,8 @@ int smc_cdc_get_slot_and_msg_send(struct smc_connection *conn)
{
int rc;
- if (!conn->lgr || (conn->lgr->is_smcd && conn->lgr->peer_shutdown))
+ if (!smc_conn_lgr_valid(conn) ||
+ (conn->lgr->is_smcd && conn->lgr->peer_shutdown))
return -EPIPE;
if (conn->lgr->is_smcd) {
diff --git a/net/smc/smc_clc.c b/net/smc/smc_clc.c
index 8409ab71a5e4..ce27399b38b1 100644
--- a/net/smc/smc_clc.c
+++ b/net/smc/smc_clc.c
@@ -774,7 +774,7 @@ int smc_clc_send_decline(struct smc_sock *smc, u32 peer_diag_info, u8 version)
dclc.os_type = version == SMC_V1 ? 0 : SMC_CLC_OS_LINUX;
dclc.hdr.typev2 = (peer_diag_info == SMC_CLC_DECL_SYNCERR) ?
SMC_FIRST_CONTACT_MASK : 0;
- if ((!smc->conn.lgr || !smc->conn.lgr->is_smcd) &&
+ if ((!smc_conn_lgr_valid(&smc->conn) || !smc->conn.lgr->is_smcd) &&
smc_ib_is_valid_local_systemid())
memcpy(dclc.id_for_peer, local_systemid,
sizeof(local_systemid));
@@ -1021,7 +1021,6 @@ static int smc_clc_send_confirm_accept(struct smc_sock *smc,
struct smc_link *link = conn->lnk;
/* SMC-R specific settings */
- link = conn->lnk;
memcpy(clc->hdr.eyecatcher, SMC_EYECATCHER,
sizeof(SMC_EYECATCHER));
clc->hdr.typev1 = SMC_TYPE_R;
diff --git a/net/smc/smc_core.c b/net/smc/smc_core.c
index a6849362f4dd..29525d03b253 100644
--- a/net/smc/smc_core.c
+++ b/net/smc/smc_core.c
@@ -171,8 +171,10 @@ static int smc_lgr_register_conn(struct smc_connection *conn, bool first)
if (!conn->lgr->is_smcd) {
rc = smcr_lgr_conn_assign_link(conn, first);
- if (rc)
+ if (rc) {
+ conn->lgr = NULL;
return rc;
+ }
}
/* find a new alert_token_local value not yet used by some connection
* in this link group
@@ -209,14 +211,13 @@ static void smc_lgr_unregister_conn(struct smc_connection *conn)
{
struct smc_link_group *lgr = conn->lgr;
- if (!lgr)
+ if (!smc_conn_lgr_valid(conn))
return;
write_lock_bh(&lgr->conns_lock);
if (conn->alert_token_local) {
__smc_lgr_unregister_conn(conn);
}
write_unlock_bh(&lgr->conns_lock);
- conn->lgr = NULL;
}
int smc_nl_get_sys_info(struct sk_buff *skb, struct netlink_callback *cb)
@@ -348,6 +349,9 @@ static int smc_nl_fill_lgr(struct smc_link_group *lgr,
goto errattr;
if (nla_put_u8(skb, SMC_NLA_LGR_R_VLAN_ID, lgr->vlan_id))
goto errattr;
+ if (nla_put_u64_64bit(skb, SMC_NLA_LGR_R_NET_COOKIE,
+ lgr->net->net_cookie, SMC_NLA_LGR_R_PAD))
+ goto errattr;
memcpy(smc_target, lgr->pnet_id, SMC_MAX_PNETID_LEN);
smc_target[SMC_MAX_PNETID_LEN] = 0;
if (nla_put_string(skb, SMC_NLA_LGR_R_PNETID, smc_target))
@@ -622,15 +626,13 @@ int smcd_nl_get_lgr(struct sk_buff *skb, struct netlink_callback *cb)
return skb->len;
}
-void smc_lgr_cleanup_early(struct smc_connection *conn)
+void smc_lgr_cleanup_early(struct smc_link_group *lgr)
{
- struct smc_link_group *lgr = conn->lgr;
spinlock_t *lgr_lock;
if (!lgr)
return;
- smc_conn_free(conn);
smc_lgr_list_head(lgr, &lgr_lock);
spin_lock_bh(lgr_lock);
/* do not use this link group for new connections */
@@ -746,9 +748,12 @@ int smcr_link_init(struct smc_link_group *lgr, struct smc_link *lnk,
}
get_device(&lnk->smcibdev->ibdev->dev);
atomic_inc(&lnk->smcibdev->lnk_cnt);
+ refcount_set(&lnk->refcnt, 1); /* link refcnt is set to 1 */
+ lnk->clearing = 0;
lnk->path_mtu = lnk->smcibdev->pattr[lnk->ibport - 1].active_mtu;
lnk->link_id = smcr_next_link_id(lgr);
lnk->lgr = lgr;
+ smc_lgr_hold(lgr); /* lgr_put in smcr_link_clear() */
lnk->link_idx = link_idx;
smc_ibdev_cnt_inc(lnk);
smcr_copy_dev_info_to_link(lnk);
@@ -803,6 +808,7 @@ out:
lnk->state = SMC_LNK_UNUSED;
if (!atomic_dec_return(&smcibdev->lnk_cnt))
wake_up(&smcibdev->lnks_deleted);
+ smc_lgr_put(lgr); /* lgr_hold above */
return rc;
}
@@ -841,6 +847,7 @@ static int smc_lgr_create(struct smc_sock *smc, struct smc_init_info *ini)
lgr->terminating = 0;
lgr->freeing = 0;
lgr->vlan_id = ini->vlan_id;
+ refcount_set(&lgr->refcnt, 1); /* set lgr refcnt to 1 */
mutex_init(&lgr->sndbufs_lock);
mutex_init(&lgr->rmbs_lock);
rwlock_init(&lgr->conns_lock);
@@ -897,6 +904,7 @@ static int smc_lgr_create(struct smc_sock *smc, struct smc_init_info *ini)
smc_wr_free_lgr_mem(lgr);
goto free_wq;
}
+ lgr->net = smc_ib_net(lnk->smcibdev);
lgr_list = &smc_lgr_list.list;
lgr_lock = &smc_lgr_list.lock;
atomic_inc(&lgr_cnt);
@@ -992,8 +1000,12 @@ void smc_switch_link_and_count(struct smc_connection *conn,
struct smc_link *to_lnk)
{
atomic_dec(&conn->lnk->conn_cnt);
+ /* link_hold in smc_conn_create() */
+ smcr_link_put(conn->lnk);
conn->lnk = to_lnk;
atomic_inc(&conn->lnk->conn_cnt);
+ /* link_put in smc_conn_free() */
+ smcr_link_hold(conn->lnk);
}
struct smc_link *smc_switch_conns(struct smc_link_group *lgr,
@@ -1101,18 +1113,24 @@ static void smcr_buf_unuse(struct smc_buf_desc *rmb_desc,
smc_buf_free(lgr, true, rmb_desc);
} else {
rmb_desc->used = 0;
+ memset(rmb_desc->cpu_addr, 0, rmb_desc->len);
}
}
static void smc_buf_unuse(struct smc_connection *conn,
struct smc_link_group *lgr)
{
- if (conn->sndbuf_desc)
+ if (conn->sndbuf_desc) {
conn->sndbuf_desc->used = 0;
- if (conn->rmb_desc && lgr->is_smcd)
+ memset(conn->sndbuf_desc->cpu_addr, 0, conn->sndbuf_desc->len);
+ }
+ if (conn->rmb_desc && lgr->is_smcd) {
conn->rmb_desc->used = 0;
- else if (conn->rmb_desc)
+ memset(conn->rmb_desc->cpu_addr, 0, conn->rmb_desc->len +
+ sizeof(struct smcd_cdc_msg));
+ } else if (conn->rmb_desc) {
smcr_buf_unuse(conn->rmb_desc, lgr);
+ }
}
/* remove a finished connection from its link group */
@@ -1120,8 +1138,19 @@ void smc_conn_free(struct smc_connection *conn)
{
struct smc_link_group *lgr = conn->lgr;
- if (!lgr)
+ if (!lgr || conn->freed)
+ /* Connection has never been registered in a
+ * link group, or has already been freed.
+ */
return;
+
+ conn->freed = 1;
+ if (!smc_conn_lgr_valid(conn))
+ /* Connection has already unregistered from
+ * link group.
+ */
+ goto lgr_put;
+
if (lgr->is_smcd) {
if (!list_empty(&lgr->list))
smc_ism_unset_conn(conn);
@@ -1138,6 +1167,10 @@ void smc_conn_free(struct smc_connection *conn)
if (!lgr->conns_num)
smc_lgr_schedule_free_work(lgr);
+lgr_put:
+ if (!lgr->is_smcd)
+ smcr_link_put(conn->lnk); /* link_hold in smc_conn_create() */
+ smc_lgr_put(lgr); /* lgr_hold in smc_conn_create() */
}
/* unregister a link from a buf_desc */
@@ -1193,13 +1226,29 @@ static void smcr_rtoken_clear_link(struct smc_link *lnk)
}
}
-/* must be called under lgr->llc_conf_mutex lock */
-void smcr_link_clear(struct smc_link *lnk, bool log)
+static void __smcr_link_clear(struct smc_link *lnk)
{
+ struct smc_link_group *lgr = lnk->lgr;
struct smc_ib_device *smcibdev;
- if (!lnk->lgr || lnk->state == SMC_LNK_UNUSED)
+ smc_wr_free_link_mem(lnk);
+ smc_ibdev_cnt_dec(lnk);
+ put_device(&lnk->smcibdev->ibdev->dev);
+ smcibdev = lnk->smcibdev;
+ memset(lnk, 0, sizeof(struct smc_link));
+ lnk->state = SMC_LNK_UNUSED;
+ if (!atomic_dec_return(&smcibdev->lnk_cnt))
+ wake_up(&smcibdev->lnks_deleted);
+ smc_lgr_put(lgr); /* lgr_hold in smcr_link_init() */
+}
+
+/* must be called under lgr->llc_conf_mutex lock */
+void smcr_link_clear(struct smc_link *lnk, bool log)
+{
+ if (!lnk->lgr || lnk->clearing ||
+ lnk->state == SMC_LNK_UNUSED)
return;
+ lnk->clearing = 1;
lnk->peer_qpn = 0;
smc_llc_link_clear(lnk, log);
smcr_buf_unmap_lgr(lnk);
@@ -1208,14 +1257,18 @@ void smcr_link_clear(struct smc_link *lnk, bool log)
smc_wr_free_link(lnk);
smc_ib_destroy_queue_pair(lnk);
smc_ib_dealloc_protection_domain(lnk);
- smc_wr_free_link_mem(lnk);
- smc_ibdev_cnt_dec(lnk);
- put_device(&lnk->smcibdev->ibdev->dev);
- smcibdev = lnk->smcibdev;
- memset(lnk, 0, sizeof(struct smc_link));
- lnk->state = SMC_LNK_UNUSED;
- if (!atomic_dec_return(&smcibdev->lnk_cnt))
- wake_up(&smcibdev->lnks_deleted);
+ smcr_link_put(lnk); /* theoretically last link_put */
+}
+
+void smcr_link_hold(struct smc_link *lnk)
+{
+ refcount_inc(&lnk->refcnt);
+}
+
+void smcr_link_put(struct smc_link *lnk)
+{
+ if (refcount_dec_and_test(&lnk->refcnt))
+ __smcr_link_clear(lnk);
}
static void smcr_buf_free(struct smc_link_group *lgr, bool is_rmb,
@@ -1280,6 +1333,21 @@ static void smc_lgr_free_bufs(struct smc_link_group *lgr)
__smc_lgr_free_bufs(lgr, true);
}
+/* won't be freed until no one accesses to lgr anymore */
+static void __smc_lgr_free(struct smc_link_group *lgr)
+{
+ smc_lgr_free_bufs(lgr);
+ if (lgr->is_smcd) {
+ if (!atomic_dec_return(&lgr->smcd->lgr_cnt))
+ wake_up(&lgr->smcd->lgrs_deleted);
+ } else {
+ smc_wr_free_lgr_mem(lgr);
+ if (!atomic_dec_return(&lgr_cnt))
+ wake_up(&lgrs_deleted);
+ }
+ kfree(lgr);
+}
+
/* remove a link group */
static void smc_lgr_free(struct smc_link_group *lgr)
{
@@ -1295,19 +1363,23 @@ static void smc_lgr_free(struct smc_link_group *lgr)
smc_llc_lgr_clear(lgr);
}
- smc_lgr_free_bufs(lgr);
destroy_workqueue(lgr->tx_wq);
if (lgr->is_smcd) {
smc_ism_put_vlan(lgr->smcd, lgr->vlan_id);
put_device(&lgr->smcd->dev);
- if (!atomic_dec_return(&lgr->smcd->lgr_cnt))
- wake_up(&lgr->smcd->lgrs_deleted);
- } else {
- smc_wr_free_lgr_mem(lgr);
- if (!atomic_dec_return(&lgr_cnt))
- wake_up(&lgrs_deleted);
}
- kfree(lgr);
+ smc_lgr_put(lgr); /* theoretically last lgr_put */
+}
+
+void smc_lgr_hold(struct smc_link_group *lgr)
+{
+ refcount_inc(&lgr->refcnt);
+}
+
+void smc_lgr_put(struct smc_link_group *lgr)
+{
+ if (refcount_dec_and_test(&lgr->refcnt))
+ __smc_lgr_free(lgr);
}
static void smc_sk_wake_ups(struct smc_sock *smc)
@@ -1459,16 +1531,11 @@ void smc_smcd_terminate_all(struct smcd_dev *smcd)
/* Called when an SMCR device is removed or the smc module is unloaded.
* If smcibdev is given, all SMCR link groups using this device are terminated.
* If smcibdev is NULL, all SMCR link groups are terminated.
- *
- * We must wait here for QPs been destroyed before we destroy the CQs,
- * or we won't received any CQEs and cdc_pend_tx_wr cannot reach 0 thus
- * smc_sock cannot be released.
*/
void smc_smcr_terminate_all(struct smc_ib_device *smcibdev)
{
struct smc_link_group *lgr, *lg;
LIST_HEAD(lgr_free_list);
- LIST_HEAD(lgr_linkdown_list);
int i;
spin_lock_bh(&smc_lgr_list.lock);
@@ -1480,7 +1547,7 @@ void smc_smcr_terminate_all(struct smc_ib_device *smcibdev)
list_for_each_entry_safe(lgr, lg, &smc_lgr_list.list, list) {
for (i = 0; i < SMC_LINKS_PER_LGR_MAX; i++) {
if (lgr->lnk[i].smcibdev == smcibdev)
- list_move_tail(&lgr->list, &lgr_linkdown_list);
+ smcr_link_down_cond_sched(&lgr->lnk[i]);
}
}
}
@@ -1492,16 +1559,6 @@ void smc_smcr_terminate_all(struct smc_ib_device *smcibdev)
__smc_lgr_terminate(lgr, false);
}
- list_for_each_entry_safe(lgr, lg, &lgr_linkdown_list, list) {
- for (i = 0; i < SMC_LINKS_PER_LGR_MAX; i++) {
- if (lgr->lnk[i].smcibdev == smcibdev) {
- mutex_lock(&lgr->llc_conf_mutex);
- smcr_link_down_cond(&lgr->lnk[i]);
- mutex_unlock(&lgr->llc_conf_mutex);
- }
- }
- }
-
if (smcibdev) {
if (atomic_read(&smcibdev->lnk_cnt))
wait_event(smcibdev->lnks_deleted,
@@ -1542,9 +1599,9 @@ void smcr_lgr_set_type(struct smc_link_group *lgr, enum smc_lgr_type new_type)
lgr_type = "ASYMMETRIC_LOCAL";
break;
}
- pr_warn_ratelimited("smc: SMC-R lg %*phN state changed: "
+ pr_warn_ratelimited("smc: SMC-R lg %*phN net %llu state changed: "
"%s, pnetid %.16s\n", SMC_LGR_ID_SIZE, &lgr->id,
- lgr_type, lgr->pnet_id);
+ lgr->net->net_cookie, lgr_type, lgr->pnet_id);
}
/* set new lgr type and tag a link as asymmetric */
@@ -1579,7 +1636,8 @@ void smcr_port_add(struct smc_ib_device *smcibdev, u8 ibport)
if (strncmp(smcibdev->pnetid[ibport - 1], lgr->pnet_id,
SMC_MAX_PNETID_LEN) ||
lgr->type == SMC_LGR_SYMMETRIC ||
- lgr->type == SMC_LGR_ASYMMETRIC_PEER)
+ lgr->type == SMC_LGR_ASYMMETRIC_PEER ||
+ !rdma_dev_access_netns(smcibdev->ibdev, lgr->net))
continue;
/* trigger local add link processing */
@@ -1737,8 +1795,10 @@ static bool smcr_lgr_match(struct smc_link_group *lgr, u8 smcr_version,
u8 peer_systemid[],
u8 peer_gid[],
u8 peer_mac_v1[],
- enum smc_lgr_role role, u32 clcqpn)
+ enum smc_lgr_role role, u32 clcqpn,
+ struct net *net)
{
+ struct smc_link *lnk;
int i;
if (memcmp(lgr->peer_systemid, peer_systemid, SMC_SYSTEMID_LEN) ||
@@ -1746,12 +1806,17 @@ static bool smcr_lgr_match(struct smc_link_group *lgr, u8 smcr_version,
return false;
for (i = 0; i < SMC_LINKS_PER_LGR_MAX; i++) {
- if (!smc_link_active(&lgr->lnk[i]))
+ lnk = &lgr->lnk[i];
+
+ if (!smc_link_active(lnk))
continue;
- if ((lgr->role == SMC_SERV || lgr->lnk[i].peer_qpn == clcqpn) &&
- !memcmp(lgr->lnk[i].peer_gid, peer_gid, SMC_GID_SIZE) &&
+ /* use verbs API to check netns, instead of lgr->net */
+ if (!rdma_dev_access_netns(lnk->smcibdev->ibdev, net))
+ return false;
+ if ((lgr->role == SMC_SERV || lnk->peer_qpn == clcqpn) &&
+ !memcmp(lnk->peer_gid, peer_gid, SMC_GID_SIZE) &&
(smcr_version == SMC_V2 ||
- !memcmp(lgr->lnk[i].peer_mac, peer_mac_v1, ETH_ALEN)))
+ !memcmp(lnk->peer_mac, peer_mac_v1, ETH_ALEN)))
return true;
}
return false;
@@ -1767,6 +1832,7 @@ static bool smcd_lgr_match(struct smc_link_group *lgr,
int smc_conn_create(struct smc_sock *smc, struct smc_init_info *ini)
{
struct smc_connection *conn = &smc->conn;
+ struct net *net = sock_net(&smc->sk);
struct list_head *lgr_list;
struct smc_link_group *lgr;
enum smc_lgr_role role;
@@ -1793,7 +1859,7 @@ int smc_conn_create(struct smc_sock *smc, struct smc_init_info *ini)
smcr_lgr_match(lgr, ini->smcr_version,
ini->peer_systemid,
ini->peer_gid, ini->peer_mac, role,
- ini->ib_clcqpn)) &&
+ ini->ib_clcqpn, net)) &&
!lgr->sync_err &&
(ini->smcd_version == SMC_V2 ||
lgr->vlan_id == ini->vlan_id) &&
@@ -1832,9 +1898,15 @@ create:
write_lock_bh(&lgr->conns_lock);
rc = smc_lgr_register_conn(conn, true);
write_unlock_bh(&lgr->conns_lock);
- if (rc)
+ if (rc) {
+ smc_lgr_cleanup_early(lgr);
goto out;
+ }
}
+ smc_lgr_hold(conn->lgr); /* lgr_put in smc_conn_free() */
+ if (!conn->lgr->is_smcd)
+ smcr_link_hold(conn->lnk); /* link_put in smc_conn_free() */
+ conn->freed = 0;
conn->local_tx_ctrl.common.type = SMC_CDC_MSG_TYPE;
conn->local_tx_ctrl.len = SMC_WR_TX_SIZE;
conn->urg_state = SMC_URG_READ;
@@ -2163,7 +2235,6 @@ static int __smc_buf_create(struct smc_sock *smc, bool is_smcd, bool is_rmb)
if (buf_desc) {
SMC_STAT_RMB_SIZE(smc, is_smcd, is_rmb, bufsize);
SMC_STAT_BUF_REUSE(smc, is_smcd, is_rmb);
- memset(buf_desc->cpu_addr, 0, bufsize);
break; /* found reusable slot */
}
@@ -2220,14 +2291,16 @@ static int __smc_buf_create(struct smc_sock *smc, bool is_smcd, bool is_rmb)
void smc_sndbuf_sync_sg_for_cpu(struct smc_connection *conn)
{
- if (!conn->lgr || conn->lgr->is_smcd || !smc_link_active(conn->lnk))
+ if (!smc_conn_lgr_valid(conn) || conn->lgr->is_smcd ||
+ !smc_link_active(conn->lnk))
return;
smc_ib_sync_sg_for_cpu(conn->lnk, conn->sndbuf_desc, DMA_TO_DEVICE);
}
void smc_sndbuf_sync_sg_for_device(struct smc_connection *conn)
{
- if (!conn->lgr || conn->lgr->is_smcd || !smc_link_active(conn->lnk))
+ if (!smc_conn_lgr_valid(conn) || conn->lgr->is_smcd ||
+ !smc_link_active(conn->lnk))
return;
smc_ib_sync_sg_for_device(conn->lnk, conn->sndbuf_desc, DMA_TO_DEVICE);
}
@@ -2236,7 +2309,7 @@ void smc_rmb_sync_sg_for_cpu(struct smc_connection *conn)
{
int i;
- if (!conn->lgr || conn->lgr->is_smcd)
+ if (!smc_conn_lgr_valid(conn) || conn->lgr->is_smcd)
return;
for (i = 0; i < SMC_LINKS_PER_LGR_MAX; i++) {
if (!smc_link_active(&conn->lgr->lnk[i]))
@@ -2250,7 +2323,7 @@ void smc_rmb_sync_sg_for_device(struct smc_connection *conn)
{
int i;
- if (!conn->lgr || conn->lgr->is_smcd)
+ if (!smc_conn_lgr_valid(conn) || conn->lgr->is_smcd)
return;
for (i = 0; i < SMC_LINKS_PER_LGR_MAX; i++) {
if (!smc_link_active(&conn->lgr->lnk[i]))
diff --git a/net/smc/smc_core.h b/net/smc/smc_core.h
index d63b08274197..4cb03e942364 100644
--- a/net/smc/smc_core.h
+++ b/net/smc/smc_core.h
@@ -137,6 +137,8 @@ struct smc_link {
u8 peer_link_uid[SMC_LGR_ID_SIZE]; /* peer uid */
u8 link_idx; /* index in lgr link array */
u8 link_is_asym; /* is link asymmetric? */
+ u8 clearing : 1; /* link is being cleared */
+ refcount_t refcnt; /* link reference count */
struct smc_link_group *lgr; /* parent link group */
struct work_struct link_down_wrk; /* wrk to bring link down */
char ibname[IB_DEVICE_NAME_MAX]; /* ib device name */
@@ -249,6 +251,7 @@ struct smc_link_group {
u8 terminating : 1;/* lgr is terminating */
u8 freeing : 1; /* lgr is being freed */
+ refcount_t refcnt; /* lgr reference count */
bool is_smcd; /* SMC-R or SMC-D */
u8 smc_version;
u8 negotiated_eid[SMC_MAX_EID_LEN];
@@ -306,6 +309,8 @@ struct smc_link_group {
u8 nexthop_mac[ETH_ALEN];
u8 uses_gateway;
__be32 saddr;
+ /* net namespace */
+ struct net *net;
};
struct { /* SMC-D */
u64 peer_gid;
@@ -407,7 +412,18 @@ static inline struct smc_connection *smc_lgr_find_conn(
return res;
}
-/* returns true if the specified link is usable */
+static inline bool smc_conn_lgr_valid(struct smc_connection *conn)
+{
+ return conn->lgr && conn->alert_token_local;
+}
+
+/*
+ * Returns true if the specified link is usable.
+ *
+ * usable means the link is ready to receive RDMA messages, map memory
+ * on the link, etc. This doesn't ensure we are able to send RDMA messages
+ * on this link, if sending RDMA messages is needed, use smc_link_sendable()
+ */
static inline bool smc_link_usable(struct smc_link *lnk)
{
if (lnk->state == SMC_LNK_UNUSED || lnk->state == SMC_LNK_INACTIVE)
@@ -415,6 +431,15 @@ static inline bool smc_link_usable(struct smc_link *lnk)
return true;
}
+/*
+ * Returns true if the specified link is ready to receive AND send RDMA
+ * messages.
+ *
+ * For the client side in first contact, the underlying QP may still in
+ * RESET or RTR when the link state is ACTIVATING, checks in smc_link_usable()
+ * is not strong enough. For those places that need to send any CDC or LLC
+ * messages, use smc_link_sendable(), otherwise, use smc_link_usable() instead
+ */
static inline bool smc_link_sendable(struct smc_link *lnk)
{
return smc_link_usable(lnk) &&
@@ -468,8 +493,10 @@ static inline void smc_set_pci_values(struct pci_dev *pci_dev,
struct smc_sock;
struct smc_clc_msg_accept_confirm;
-void smc_lgr_cleanup_early(struct smc_connection *conn);
+void smc_lgr_cleanup_early(struct smc_link_group *lgr);
void smc_lgr_terminate_sched(struct smc_link_group *lgr);
+void smc_lgr_hold(struct smc_link_group *lgr);
+void smc_lgr_put(struct smc_link_group *lgr);
void smcr_port_add(struct smc_ib_device *smcibdev, u8 ibport);
void smcr_port_err(struct smc_ib_device *smcibdev, u8 ibport);
void smc_smcd_terminate(struct smcd_dev *dev, u64 peer_gid,
@@ -501,6 +528,8 @@ void smc_core_exit(void);
int smcr_link_init(struct smc_link_group *lgr, struct smc_link *lnk,
u8 link_idx, struct smc_init_info *ini);
void smcr_link_clear(struct smc_link *lnk, bool log);
+void smcr_link_hold(struct smc_link *lnk);
+void smcr_link_put(struct smc_link *lnk);
void smc_switch_link_and_count(struct smc_connection *conn,
struct smc_link *to_lnk);
int smcr_buf_map_lgr(struct smc_link *lnk);
diff --git a/net/smc/smc_diag.c b/net/smc/smc_diag.c
index c952986a6aca..b8898c787d23 100644
--- a/net/smc/smc_diag.c
+++ b/net/smc/smc_diag.c
@@ -89,7 +89,7 @@ static int __smc_diag_dump(struct sock *sk, struct sk_buff *skb,
r->diag_state = sk->sk_state;
if (smc->use_fallback)
r->diag_mode = SMC_DIAG_MODE_FALLBACK_TCP;
- else if (smc->conn.lgr && smc->conn.lgr->is_smcd)
+ else if (smc_conn_lgr_valid(&smc->conn) && smc->conn.lgr->is_smcd)
r->diag_mode = SMC_DIAG_MODE_SMCD;
else
r->diag_mode = SMC_DIAG_MODE_SMCR;
@@ -142,27 +142,29 @@ static int __smc_diag_dump(struct sock *sk, struct sk_buff *skb,
goto errout;
}
- if (smc->conn.lgr && !smc->conn.lgr->is_smcd &&
+ if (smc_conn_lgr_valid(&smc->conn) && !smc->conn.lgr->is_smcd &&
(req->diag_ext & (1 << (SMC_DIAG_LGRINFO - 1))) &&
!list_empty(&smc->conn.lgr->list)) {
+ struct smc_link *link = smc->conn.lnk;
+ struct net *net = read_pnet(&link->smcibdev->ibdev->coredev.rdma_net);
+
struct smc_diag_lgrinfo linfo = {
.role = smc->conn.lgr->role,
- .lnk[0].ibport = smc->conn.lnk->ibport,
- .lnk[0].link_id = smc->conn.lnk->link_id,
+ .lnk[0].ibport = link->ibport,
+ .lnk[0].link_id = link->link_id,
+ .lnk[0].net_cookie = net->net_cookie,
};
memcpy(linfo.lnk[0].ibname,
smc->conn.lgr->lnk[0].smcibdev->ibdev->name,
- sizeof(smc->conn.lnk->smcibdev->ibdev->name));
- smc_gid_be16_convert(linfo.lnk[0].gid,
- smc->conn.lnk->gid);
- smc_gid_be16_convert(linfo.lnk[0].peer_gid,
- smc->conn.lnk->peer_gid);
+ sizeof(link->smcibdev->ibdev->name));
+ smc_gid_be16_convert(linfo.lnk[0].gid, link->gid);
+ smc_gid_be16_convert(linfo.lnk[0].peer_gid, link->peer_gid);
if (nla_put(skb, SMC_DIAG_LGRINFO, sizeof(linfo), &linfo) < 0)
goto errout;
}
- if (smc->conn.lgr && smc->conn.lgr->is_smcd &&
+ if (smc_conn_lgr_valid(&smc->conn) && smc->conn.lgr->is_smcd &&
(req->diag_ext & (1 << (SMC_DIAG_DMBINFO - 1))) &&
!list_empty(&smc->conn.lgr->list)) {
struct smc_connection *conn = &smc->conn;
diff --git a/net/smc/smc_ib.c b/net/smc/smc_ib.c
index fe5d5399c4e8..a3e2d3b89568 100644
--- a/net/smc/smc_ib.c
+++ b/net/smc/smc_ib.c
@@ -12,6 +12,8 @@
* Author(s): Ursula Braun <[email protected]>
*/
+#include <linux/etherdevice.h>
+#include <linux/if_vlan.h>
#include <linux/random.h>
#include <linux/workqueue.h>
#include <linux/scatterlist.h>
diff --git a/net/smc/smc_ib.h b/net/smc/smc_ib.h
index bfa1c6bf6313..5d8b49c57f50 100644
--- a/net/smc/smc_ib.h
+++ b/net/smc/smc_ib.h
@@ -69,6 +69,13 @@ static inline __be32 smc_ib_gid_to_ipv4(u8 gid[SMC_GID_SIZE])
return cpu_to_be32(INADDR_NONE);
}
+static inline struct net *smc_ib_net(struct smc_ib_device *smcibdev)
+{
+ if (smcibdev && smcibdev->ibdev)
+ return read_pnet(&smcibdev->ibdev->coredev.rdma_net);
+ return NULL;
+}
+
struct smc_init_info_smcrv2;
struct smc_buf_desc;
struct smc_link;
diff --git a/net/smc/smc_ism.c b/net/smc/smc_ism.c
index fd28cc498b98..a2084ecdb97e 100644
--- a/net/smc/smc_ism.c
+++ b/net/smc/smc_ism.c
@@ -6,6 +6,7 @@
* Copyright IBM Corp. 2018
*/
+#include <linux/if_vlan.h>
#include <linux/spinlock.h>
#include <linux/mutex.h>
#include <linux/slab.h>
diff --git a/net/smc/smc_llc.c b/net/smc/smc_llc.c
index 3e9fd8a3124c..c4d057b2941d 100644
--- a/net/smc/smc_llc.c
+++ b/net/smc/smc_llc.c
@@ -242,9 +242,10 @@ static void smc_llc_flow_parallel(struct smc_link_group *lgr, u8 flow_type,
}
/* drop parallel or already-in-progress llc requests */
if (flow_type != msg_type)
- pr_warn_once("smc: SMC-R lg %*phN dropped parallel "
+ pr_warn_once("smc: SMC-R lg %*phN net %llu dropped parallel "
"LLC msg: msg %d flow %d role %d\n",
SMC_LGR_ID_SIZE, &lgr->id,
+ lgr->net->net_cookie,
qentry->msg.raw.hdr.common.type,
flow_type, lgr->role);
kfree(qentry);
@@ -359,9 +360,10 @@ struct smc_llc_qentry *smc_llc_wait(struct smc_link_group *lgr,
smc_llc_flow_qentry_clr(flow));
return NULL;
}
- pr_warn_once("smc: SMC-R lg %*phN dropped unexpected LLC msg: "
+ pr_warn_once("smc: SMC-R lg %*phN net %llu dropped unexpected LLC msg: "
"msg %d exp %d flow %d role %d flags %x\n",
- SMC_LGR_ID_SIZE, &lgr->id, rcv_msg, exp_msg,
+ SMC_LGR_ID_SIZE, &lgr->id, lgr->net->net_cookie,
+ rcv_msg, exp_msg,
flow->type, lgr->role,
flow->qentry->msg.raw.hdr.flags);
smc_llc_flow_qentry_del(flow);
@@ -1816,8 +1818,9 @@ finish:
static void smc_llc_protocol_violation(struct smc_link_group *lgr, u8 type)
{
- pr_warn_ratelimited("smc: SMC-R lg %*phN LLC protocol violation: "
- "llc_type %d\n", SMC_LGR_ID_SIZE, &lgr->id, type);
+ pr_warn_ratelimited("smc: SMC-R lg %*phN net %llu LLC protocol violation: "
+ "llc_type %d\n", SMC_LGR_ID_SIZE, &lgr->id,
+ lgr->net->net_cookie, type);
smc_llc_set_termination_rsn(lgr, SMC_LLC_DEL_PROT_VIOL);
smc_lgr_terminate_sched(lgr);
}
@@ -2146,9 +2149,10 @@ int smc_llc_link_init(struct smc_link *link)
void smc_llc_link_active(struct smc_link *link)
{
- pr_warn_ratelimited("smc: SMC-R lg %*phN link added: id %*phN, "
+ pr_warn_ratelimited("smc: SMC-R lg %*phN net %llu link added: id %*phN, "
"peerid %*phN, ibdev %s, ibport %d\n",
SMC_LGR_ID_SIZE, &link->lgr->id,
+ link->lgr->net->net_cookie,
SMC_LGR_ID_SIZE, &link->link_uid,
SMC_LGR_ID_SIZE, &link->peer_link_uid,
link->smcibdev->ibdev->name, link->ibport);
@@ -2164,9 +2168,10 @@ void smc_llc_link_active(struct smc_link *link)
void smc_llc_link_clear(struct smc_link *link, bool log)
{
if (log)
- pr_warn_ratelimited("smc: SMC-R lg %*phN link removed: id %*phN"
+ pr_warn_ratelimited("smc: SMC-R lg %*phN net %llu link removed: id %*phN"
", peerid %*phN, ibdev %s, ibport %d\n",
SMC_LGR_ID_SIZE, &link->lgr->id,
+ link->lgr->net->net_cookie,
SMC_LGR_ID_SIZE, &link->link_uid,
SMC_LGR_ID_SIZE, &link->peer_link_uid,
link->smcibdev->ibdev->name, link->ibport);
diff --git a/net/smc/smc_pnet.c b/net/smc/smc_pnet.c
index 67e9d9fde085..291f1484a1b7 100644
--- a/net/smc/smc_pnet.c
+++ b/net/smc/smc_pnet.c
@@ -64,6 +64,7 @@ struct smc_pnetentry {
struct {
char eth_name[IFNAMSIZ + 1];
struct net_device *ndev;
+ netdevice_tracker dev_tracker;
};
struct {
char ib_name[IB_DEVICE_NAME_MAX + 1];
@@ -119,7 +120,7 @@ static int smc_pnet_remove_by_pnetid(struct net *net, char *pnet_name)
smc_pnet_match(pnetelem->pnet_name, pnet_name)) {
list_del(&pnetelem->list);
if (pnetelem->type == SMC_PNET_ETH && pnetelem->ndev) {
- dev_put(pnetelem->ndev);
+ dev_put_track(pnetelem->ndev, &pnetelem->dev_tracker);
pr_warn_ratelimited("smc: net device %s "
"erased user defined "
"pnetid %.16s\n",
@@ -195,7 +196,7 @@ static int smc_pnet_add_by_ndev(struct net_device *ndev)
list_for_each_entry_safe(pnetelem, tmp_pe, &pnettable->pnetlist, list) {
if (pnetelem->type == SMC_PNET_ETH && !pnetelem->ndev &&
!strncmp(pnetelem->eth_name, ndev->name, IFNAMSIZ)) {
- dev_hold(ndev);
+ dev_hold_track(ndev, &pnetelem->dev_tracker, GFP_ATOMIC);
pnetelem->ndev = ndev;
rc = 0;
pr_warn_ratelimited("smc: adding net device %s with "
@@ -226,7 +227,7 @@ static int smc_pnet_remove_by_ndev(struct net_device *ndev)
write_lock(&pnettable->lock);
list_for_each_entry_safe(pnetelem, tmp_pe, &pnettable->pnetlist, list) {
if (pnetelem->type == SMC_PNET_ETH && pnetelem->ndev == ndev) {
- dev_put(pnetelem->ndev);
+ dev_put_track(pnetelem->ndev, &pnetelem->dev_tracker);
pnetelem->ndev = NULL;
rc = 0;
pr_warn_ratelimited("smc: removing net device %s with "
@@ -368,7 +369,8 @@ static int smc_pnet_add_eth(struct smc_pnettable *pnettable, struct net *net,
memcpy(new_pe->pnet_name, pnet_name, SMC_MAX_PNETID_LEN);
strncpy(new_pe->eth_name, eth_name, IFNAMSIZ);
new_pe->ndev = ndev;
-
+ if (ndev)
+ netdev_tracker_alloc(ndev, &new_pe->dev_tracker, GFP_KERNEL);
rc = -EEXIST;
new_netdev = true;
write_lock(&pnettable->lock);
@@ -976,14 +978,16 @@ static int smc_pnet_determine_gid(struct smc_ib_device *ibdev, int i,
/* find a roce device for the given pnetid */
static void _smc_pnet_find_roce_by_pnetid(u8 *pnet_id,
struct smc_init_info *ini,
- struct smc_ib_device *known_dev)
+ struct smc_ib_device *known_dev,
+ struct net *net)
{
struct smc_ib_device *ibdev;
int i;
mutex_lock(&smc_ib_devices.mutex);
list_for_each_entry(ibdev, &smc_ib_devices.list, list) {
- if (ibdev == known_dev)
+ if (ibdev == known_dev ||
+ !rdma_dev_access_netns(ibdev->ibdev, net))
continue;
for (i = 1; i <= SMC_MAX_PORTS; i++) {
if (!rdma_is_port_valid(ibdev->ibdev, i))
@@ -1000,12 +1004,14 @@ out:
mutex_unlock(&smc_ib_devices.mutex);
}
-/* find alternate roce device with same pnet_id and vlan_id */
+/* find alternate roce device with same pnet_id, vlan_id and net namespace */
void smc_pnet_find_alt_roce(struct smc_link_group *lgr,
struct smc_init_info *ini,
struct smc_ib_device *known_dev)
{
- _smc_pnet_find_roce_by_pnetid(lgr->pnet_id, ini, known_dev);
+ struct net *net = lgr->net;
+
+ _smc_pnet_find_roce_by_pnetid(lgr->pnet_id, ini, known_dev, net);
}
/* if handshake network device belongs to a roce device, return its
@@ -1014,6 +1020,7 @@ void smc_pnet_find_alt_roce(struct smc_link_group *lgr,
static void smc_pnet_find_rdma_dev(struct net_device *netdev,
struct smc_init_info *ini)
{
+ struct net *net = dev_net(netdev);
struct smc_ib_device *ibdev;
mutex_lock(&smc_ib_devices.mutex);
@@ -1021,6 +1028,10 @@ static void smc_pnet_find_rdma_dev(struct net_device *netdev,
struct net_device *ndev;
int i;
+ /* check rdma net namespace */
+ if (!rdma_dev_access_netns(ibdev->ibdev, net))
+ continue;
+
for (i = 1; i <= SMC_MAX_PORTS; i++) {
if (!rdma_is_port_valid(ibdev->ibdev, i))
continue;
@@ -1051,15 +1062,17 @@ static void smc_pnet_find_roce_by_pnetid(struct net_device *ndev,
struct smc_init_info *ini)
{
u8 ndev_pnetid[SMC_MAX_PNETID_LEN];
+ struct net *net;
ndev = pnet_find_base_ndev(ndev);
+ net = dev_net(ndev);
if (smc_pnetid_by_dev_port(ndev->dev.parent, ndev->dev_port,
ndev_pnetid) &&
smc_pnet_find_ndev_pnetid_by_table(ndev, ndev_pnetid)) {
smc_pnet_find_rdma_dev(ndev, ini);
return; /* pnetid could not be determined */
}
- _smc_pnet_find_roce_by_pnetid(ndev_pnetid, ini, NULL);
+ _smc_pnet_find_roce_by_pnetid(ndev_pnetid, ini, NULL, net);
}
static void smc_pnet_find_ism_by_pnetid(struct net_device *ndev,
diff --git a/net/smc/smc_tracepoint.h b/net/smc/smc_tracepoint.h
index ec17f29646f5..9fc5e586d24a 100644
--- a/net/smc/smc_tracepoint.h
+++ b/net/smc/smc_tracepoint.h
@@ -22,6 +22,7 @@ TRACE_EVENT(smc_switch_to_fallback,
TP_STRUCT__entry(
__field(const void *, sk)
__field(const void *, clcsk)
+ __field(u64, net_cookie)
__field(int, fallback_rsn)
),
@@ -31,11 +32,13 @@ TRACE_EVENT(smc_switch_to_fallback,
__entry->sk = sk;
__entry->clcsk = clcsk;
+ __entry->net_cookie = sock_net(sk)->net_cookie;
__entry->fallback_rsn = fallback_rsn;
),
- TP_printk("sk=%p clcsk=%p fallback_rsn=%d",
- __entry->sk, __entry->clcsk, __entry->fallback_rsn)
+ TP_printk("sk=%p clcsk=%p net=%llu fallback_rsn=%d",
+ __entry->sk, __entry->clcsk,
+ __entry->net_cookie, __entry->fallback_rsn)
);
DECLARE_EVENT_CLASS(smc_msg_event,
@@ -46,19 +49,23 @@ DECLARE_EVENT_CLASS(smc_msg_event,
TP_STRUCT__entry(
__field(const void *, smc)
+ __field(u64, net_cookie)
__field(size_t, len)
__string(name, smc->conn.lnk->ibname)
),
TP_fast_assign(
+ const struct sock *sk = &smc->sk;
+
__entry->smc = smc;
+ __entry->net_cookie = sock_net(sk)->net_cookie;
__entry->len = len;
__assign_str(name, smc->conn.lnk->ibname);
),
- TP_printk("smc=%p len=%zu dev=%s",
- __entry->smc, __entry->len,
- __get_str(name))
+ TP_printk("smc=%p net=%llu len=%zu dev=%s",
+ __entry->smc, __entry->net_cookie,
+ __entry->len, __get_str(name))
);
DEFINE_EVENT(smc_msg_event, smc_tx_sendmsg,
@@ -84,6 +91,7 @@ TRACE_EVENT(smcr_link_down,
TP_STRUCT__entry(
__field(const void *, lnk)
__field(const void *, lgr)
+ __field(u64, net_cookie)
__field(int, state)
__string(name, lnk->ibname)
__field(void *, location)
@@ -94,13 +102,14 @@ TRACE_EVENT(smcr_link_down,
__entry->lnk = lnk;
__entry->lgr = lgr;
+ __entry->net_cookie = lgr->net->net_cookie;
__entry->state = lnk->state;
__assign_str(name, lnk->ibname);
__entry->location = location;
),
- TP_printk("lnk=%p lgr=%p state=%d dev=%s location=%pS",
- __entry->lnk, __entry->lgr,
+ TP_printk("lnk=%p lgr=%p net=%llu state=%d dev=%s location=%pS",
+ __entry->lnk, __entry->lgr, __entry->net_cookie,
__entry->state, __get_str(name),
__entry->location)
);
diff --git a/net/smc/smc_wr.c b/net/smc/smc_wr.c
index c6cfdea8b71b..24be1d03fef9 100644
--- a/net/smc/smc_wr.c
+++ b/net/smc/smc_wr.c
@@ -54,11 +54,7 @@ struct smc_wr_tx_pend { /* control data for a pending send request */
/* returns true if at least one tx work request is pending on the given link */
static inline bool smc_wr_is_tx_pend(struct smc_link *link)
{
- if (find_first_bit(link->wr_tx_mask, link->wr_tx_cnt) !=
- link->wr_tx_cnt) {
- return true;
- }
- return false;
+ return !bitmap_empty(link->wr_tx_mask, link->wr_tx_cnt);
}
/* wait till all pending tx work requests on the given link are completed */
@@ -696,7 +692,7 @@ void smc_wr_free_link_mem(struct smc_link *lnk)
lnk->wr_tx_compl = NULL;
kfree(lnk->wr_tx_pends);
lnk->wr_tx_pends = NULL;
- kfree(lnk->wr_tx_mask);
+ bitmap_free(lnk->wr_tx_mask);
lnk->wr_tx_mask = NULL;
kfree(lnk->wr_tx_sges);
lnk->wr_tx_sges = NULL;
@@ -772,9 +768,7 @@ int smc_wr_alloc_link_mem(struct smc_link *link)
GFP_KERNEL);
if (!link->wr_rx_sges)
goto no_mem_wr_tx_sges;
- link->wr_tx_mask = kcalloc(BITS_TO_LONGS(SMC_WR_BUF_CNT),
- sizeof(*link->wr_tx_mask),
- GFP_KERNEL);
+ link->wr_tx_mask = bitmap_zalloc(SMC_WR_BUF_CNT, GFP_KERNEL);
if (!link->wr_tx_mask)
goto no_mem_wr_rx_sges;
link->wr_tx_pends = kcalloc(SMC_WR_BUF_CNT,
@@ -887,8 +881,7 @@ int smc_wr_create_link(struct smc_link *lnk)
goto dma_unmap;
}
smc_wr_init_sge(lnk);
- memset(lnk->wr_tx_mask, 0,
- BITS_TO_LONGS(SMC_WR_BUF_CNT) * sizeof(*lnk->wr_tx_mask));
+ bitmap_zero(lnk->wr_tx_mask, SMC_WR_BUF_CNT);
init_waitqueue_head(&lnk->wr_tx_wait);
atomic_set(&lnk->wr_tx_refcnt, 0);
init_waitqueue_head(&lnk->wr_reg_wait);
diff --git a/net/smc/smc_wr.h b/net/smc/smc_wr.h
index 47512ccce5ef..a54e90a1110f 100644
--- a/net/smc/smc_wr.h
+++ b/net/smc/smc_wr.h
@@ -125,10 +125,6 @@ int smc_wr_tx_v2_send(struct smc_link *link,
int smc_wr_tx_send_wait(struct smc_link *link, struct smc_wr_tx_pend_priv *priv,
unsigned long timeout);
void smc_wr_tx_cq_handler(struct ib_cq *ib_cq, void *cq_context);
-void smc_wr_tx_dismiss_slots(struct smc_link *lnk, u8 wr_rx_hdr_type,
- smc_wr_tx_filter filter,
- smc_wr_tx_dismisser dismisser,
- unsigned long data);
void smc_wr_tx_wait_no_pending_sends(struct smc_link *link);
int smc_wr_rx_register_handler(struct smc_wr_rx_handler *handler);
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