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net/smc: tell peers about abnormal link group termination

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There are lots of link group termination scenarios. Most of them
still allow to inform the peer of the terminating sockets about aborting.
This patch tries to call smc_close_abort() for terminating sockets.

And the internal TCP socket is reset with tcp_abort().

Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
This commit is contained in:
Ursula Braun 2019-10-21 16:13:12 +02:00 committed by Jakub Kicinski
parent 8e316b9e72
commit 8317976096
3 changed files with 6 additions and 6 deletions
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9
net/smc/smc_close.c
View File

@ -13,6 +13,7 @@
#include <linux/sched/signal.h>
#include <net/sock.h>
#include <net/tcp.h>
#include "smc.h"
#include "smc_tx.h"
@ -102,7 +103,7 @@ static int smc_close_final(struct smc_connection *conn)
return smc_cdc_get_slot_and_msg_send(conn);
}
static int smc_close_abort(struct smc_connection *conn)
int smc_close_abort(struct smc_connection *conn)
{
conn->local_tx_ctrl.conn_state_flags.peer_conn_abort = 1;
@ -118,10 +119,8 @@ static void smc_close_active_abort(struct smc_sock *smc)
if (sk->sk_state != SMC_INIT && smc->clcsock && smc->clcsock->sk) {
sk->sk_err = ECONNABORTED;
if (smc->clcsock && smc->clcsock->sk) {
smc->clcsock->sk->sk_err = ECONNABORTED;
smc->clcsock->sk->sk_state_change(smc->clcsock->sk);
}
if (smc->clcsock && smc->clcsock->sk)
tcp_abort(smc->clcsock->sk, ECONNABORTED);
}
switch (sk->sk_state) {
case SMC_ACTIVE:

1
net/smc/smc_close.h
View File

@ -24,5 +24,6 @@ int smc_close_active(struct smc_sock *smc);
int smc_close_shutdown_write(struct smc_sock *smc);
void smc_close_init(struct smc_sock *smc);
void smc_clcsock_release(struct smc_sock *smc);
int smc_close_abort(struct smc_connection *conn);
#endif /* SMC_CLOSE_H */

2
net/smc/smc_core.c
View File

@ -513,8 +513,8 @@ static void __smc_lgr_terminate(struct smc_link_group *lgr)
smc = container_of(conn, struct smc_sock, conn);
lock_sock(&smc->sk);
sock_hold(&smc->sk); /* sock_put in close work */
smc_close_abort(conn);
conn->killed = 1;
conn->local_tx_ctrl.conn_state_flags.peer_conn_abort = 1;
smc_lgr_unregister_conn(conn);
conn->lgr = NULL;
if (!schedule_work(&conn->close_work))