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net/smc: wake up wr_reg_wait when terminating a link group 

If a new connection with a new rmb is added to a link group, its
memory region is registered. If a link group is terminated, a pending
registration requires a wake up.

And consolidate setting of tx_flag peer_conn_abort in smc_lgr_terminate().

Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ursula Braun 2018-01-25 11:15:35 +01:00 коммит произвёл David S. Miller
Родитель 610db66f37
Коммит 732720fafd
2 изменённых файлов: 11 добавлений и 11 удалений
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14
net/smc/smc_close.c
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@ -89,7 +89,7 @@ static int smc_close_abort(struct smc_connection *conn)
}
/* terminate smc socket abnormally - active abort
* RDMA communication no longer possible
* link group is terminated, i.e. RDMA communication no longer possible
*/
static void smc_close_active_abort(struct smc_sock *smc)
{
@ -113,7 +113,6 @@ static void smc_close_active_abort(struct smc_sock *smc)
break;
case SMC_APPCLOSEWAIT1:
case SMC_APPCLOSEWAIT2:
txflags->peer_conn_abort = 1;
sock_release(smc->clcsock);
if (!smc_cdc_rxed_any_close(&smc->conn))
sk->sk_state = SMC_PEERABORTWAIT;
@ -127,7 +126,6 @@ static void smc_close_active_abort(struct smc_sock *smc)
case SMC_PEERCLOSEWAIT2:
if (!txflags->peer_conn_closed) {
sk->sk_state = SMC_PEERABORTWAIT;
txflags->peer_conn_abort = 1;
sock_release(smc->clcsock);
} else {
sk->sk_state = SMC_CLOSED;
@ -135,10 +133,8 @@ static void smc_close_active_abort(struct smc_sock *smc)
break;
case SMC_PROCESSABORT:
case SMC_APPFINCLOSEWAIT:
if (!txflags->peer_conn_closed) {
txflags->peer_conn_abort = 1;
if (!txflags->peer_conn_closed)
sock_release(smc->clcsock);
}
sk->sk_state = SMC_CLOSED;
break;
case SMC_PEERFINCLOSEWAIT:
@ -303,8 +299,9 @@ static void smc_close_passive_abort_received(struct smc_sock *smc)
}
}
/* Some kind of closing has been received: peer_conn_closed, peer_conn_abort,
* or peer_done_writing.
/* Either some kind of closing has been received: peer_conn_closed,
* peer_conn_abort, or peer_done_writing
* or the link group of the connection terminates abnormally.
*/
static void smc_close_passive_work(struct work_struct *work)
{
@ -327,6 +324,7 @@ static void smc_close_passive_work(struct work_struct *work)
rxflags = &conn->local_rx_ctrl.conn_state_flags;
if (rxflags->peer_conn_abort) {
/* peer has not received all data */
smc_close_passive_abort_received(smc);
release_sock(&smc->sk);
cancel_delayed_work_sync(&conn->tx_work);

8
net/smc/smc_core.c
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@ -234,9 +234,7 @@ static void smc_buf_unuse(struct smc_connection *conn)
/* remove a finished connection from its link group */
void smc_conn_free(struct smc_connection *conn)
{
struct smc_link_group *lgr = conn->lgr;
if (!lgr)
if (!conn->lgr)
return;
smc_cdc_tx_dismiss_slots(conn);
smc_lgr_unregister_conn(conn);
@ -331,12 +329,16 @@ void smc_lgr_terminate(struct smc_link_group *lgr)
conn = rb_entry(node, struct smc_connection, alert_node);
smc = container_of(conn, struct smc_sock, conn);
sock_hold(&smc->sk);
conn->local_tx_ctrl.conn_state_flags.peer_conn_abort = 1;
__smc_lgr_unregister_conn(conn);
write_unlock_bh(&lgr->conns_lock);
schedule_work(&conn->close_work);
write_lock_bh(&lgr->conns_lock);
sock_put(&smc->sk);
node = rb_first(&lgr->conns_all);
}
write_unlock_bh(&lgr->conns_lock);
wake_up(&lgr->lnk[SMC_SINGLE_LINK].wr_reg_wait);
}
/* Determine vlan of internal TCP socket.