[PATCH net-next 09/10] net/smc: destruct non-accepted sockets

Ursula Braun
2017-04-10T12:58:04Z

Make sure sockets never accepted are removed cleanly.

Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
---
net/smc/af_smc.c | 14 +++++++++-----
net/smc/smc_close.c | 1 -
2 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index 491a8b2..5b6ee21 100644
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -638,7 +638,8 @@ struct sock *smc_accept_dequeue(struct sock *parent,

smc_accept_unlink(new_sk);
if (new_sk->sk_state == SMC_CLOSED) {
- /* tbd in follow-on patch: close this sock */
+ new_sk->sk_prot->unhash(new_sk);
+ sock_put(new_sk);
continue;
}
if (new_sock)
@@ -658,8 +659,13 @@ void smc_close_non_accepted(struct sock *sk)
if (!sk->sk_lingertime)
/* wait for peer closing */
sk->sk_lingertime = SMC_MAX_STREAM_WAIT_TIMEOUT;
- if (!smc->use_fallback)
+ if (smc->use_fallback) {
+ sk->sk_state = SMC_CLOSED;
+ } else {
smc_close_active(smc);
+ sock_set_flag(sk, SOCK_DEAD);
+ sk->sk_shutdown |= SHUTDOWN_MASK;
+ }
if (smc->clcsock) {
struct socket *tcp;

@@ -667,11 +673,9 @@ void smc_close_non_accepted(struct sock *sk)
smc->clcsock = NULL;
sock_release(tcp);
}
- sock_set_flag(sk, SOCK_DEAD);
- sk->sk_shutdown |= SHUTDOWN_MASK;
if (smc->use_fallback) {
schedule_delayed_work(&smc->sock_put_work, TCP_TIMEWAIT_LEN);
- } else {
+ } else if (sk->sk_state == SMC_CLOSED) {
smc_conn_free(&smc->conn);
schedule_delayed_work(&smc->sock_put_work,
SMC_CLOSE_SOCK_PUT_DELAY);
diff --git a/net/smc/smc_close.c b/net/smc/smc_close.c
index 9070720b..3c2e166 100644
--- a/net/smc/smc_close.c
+++ b/net/smc/smc_close.c
@@ -191,7 +191,6 @@ int smc_close_active(struct smc_sock *smc)
sk->sk_state = SMC_CLOSED;
if (smc->smc_listen_work.func)
cancel_work_sync(&smc->smc_listen_work);
- sock_put(sk);
break;
case SMC_LISTEN:
sk->sk_state = SMC_CLOSED;
--
2.10.2