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| author |   David Howells <dhowells@redhat.com> | 2017-01-05 10:38:36 +0000 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2017-01-09 11:10:02 +0000 |
| commit | 210f035316f545e6f507e7d61e191495ba983e27 (patch) | |
| tree | 2e8a73099c2adf217251136bad50a8ec4bac840b /net/rxrpc/af_rxrpc.c | |
| parent | afs: Kill afs_wait_mode (diff) | |
| download | linux-dev-210f035316f545e6f507e7d61e191495ba983e27.tar.xz linux-dev-210f035316f545e6f507e7d61e191495ba983e27.zip | |
rxrpc: Allow listen(sock, 0) to be used to disable listening
Allow listen() with a backlog of 0 to be used to disable listening on an
AF_RXRPC socket. This also releases any preallocation, thereby making it
easier for a kernel service to account for all allocated call structures
when shutting down the service.
The socket cannot thereafter have listening reenabled, but must rather be
closed and reopened.
Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'net/rxrpc/af_rxrpc.c')
| -rw-r--r-- | net/rxrpc/af_rxrpc.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/net/rxrpc/af_rxrpc.c b/net/rxrpc/af_rxrpc.c index 5f63f6dcaabb..199b46e93e64 100644 --- a/net/rxrpc/af_rxrpc.c +++ b/net/rxrpc/af_rxrpc.c @@ -224,6 +224,14 @@ static int rxrpc_listen(struct socket *sock, int backlog) else sk->sk_max_ack_backlog = old; break; + case RXRPC_SERVER_LISTENING: + if (backlog == 0) { + rx->sk.sk_state = RXRPC_SERVER_LISTEN_DISABLED; + sk->sk_max_ack_backlog = 0; + rxrpc_discard_prealloc(rx); + ret = 0; + break; + } default: ret = -EBUSY; break; |