A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-10 06:09:23 -04:00
Code Issues Projects Releases Packages Wiki Activity

net/smc: postpone release of clcsock

Browse source 
According to RFC7609 (http://www.rfc-editor.org/info/rfc7609)
first the SMC-R connection is shut down and then the normal TCP
connection FIN processing drives cleanup of the internal TCP connection.
The unconditional release of the clcsock during active socket closing
has to be postponed if the peer has not yet signalled socket closing.

Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ursula Braun 2019-02-07 15:56:15 +01:00 • committed by David S. Miller
commit b03faa1faf
2 changed files with 23 additions and 17 deletions
Download patch file Download diff file Expand all files Collapse all files

33
net/smc/af_smc.c
View file

@ -145,32 +145,33 @@ static int smc_release(struct socket *sock)
rc = smc_close_active(smc);
sock_set_flag(sk, SOCK_DEAD);
sk->sk_shutdown |= SHUTDOWN_MASK;
} else {
if (sk->sk_state != SMC_LISTEN && sk->sk_state != SMC_INIT)
sock_put(sk); /* passive closing */
if (sk->sk_state == SMC_LISTEN) {
/* wake up clcsock accept */
rc = kernel_sock_shutdown(smc->clcsock, SHUT_RDWR);
}
sk->sk_state = SMC_CLOSED;
sk->sk_state_change(sk);
}
sk->sk_prot->unhash(sk);
if (smc->clcsock) {
if (smc->use_fallback && sk->sk_state == SMC_LISTEN) {
/* wake up clcsock accept */
rc = kernel_sock_shutdown(smc->clcsock, SHUT_RDWR);
if (sk->sk_state == SMC_CLOSED) {
if (smc->clcsock) {
mutex_lock(&smc->clcsock_release_lock);
sock_release(smc->clcsock);
smc->clcsock = NULL;
mutex_unlock(&smc->clcsock_release_lock);
}
mutex_lock(&smc->clcsock_release_lock);
sock_release(smc->clcsock);
smc->clcsock = NULL;
mutex_unlock(&smc->clcsock_release_lock);
}
if (smc->use_fallback) {
if (sk->sk_state != SMC_LISTEN && sk->sk_state != SMC_INIT)
sock_put(sk); /* passive closing */
sk->sk_state = SMC_CLOSED;
sk->sk_state_change(sk);
if (!smc->use_fallback)
smc_conn_free(&smc->conn);
}
/* detach socket */
sock_orphan(sk);
sock->sk = NULL;
if (!smc->use_fallback && sk->sk_state == SMC_CLOSED)
smc_conn_free(&smc->conn);
release_sock(sk);
sock_put(sk); /* final sock_put */

7
net/smc/smc_close.c
View file

@ -405,8 +405,13 @@ wakeup:
if (old_state != sk->sk_state) {
sk->sk_state_change(sk);
if ((sk->sk_state == SMC_CLOSED) &&
(sock_flag(sk, SOCK_DEAD) || !sk->sk_socket))
(sock_flag(sk, SOCK_DEAD) || !sk->sk_socket)) {
smc_conn_free(conn);
if (smc->clcsock) {
sock_release(smc->clcsock);
smc->clcsock = NULL;
}
}
}
release_sock(sk);
sock_put(sk); /* sock_hold done by schedulers of close_work */