rxrpc: Fix firewall route keepalive
Fix the firewall route keepalive part of AF_RXRPC which is currently
function incorrectly by replying to VERSION REPLY packets from the server
with VERSION REQUEST packets.
Instead, send VERSION REPLY packets to the peers of service connections to
act as keep-alives 20s after the latest packet was transmitted to that
peer.
Also, just discard VERSION REPLY packets rather than replying to them.
Signed-off-by: David Howells <dhowells@redhat.com>
diff --git a/net/rxrpc/af_rxrpc.c b/net/rxrpc/af_rxrpc.c
index ec5ec68..0b3026b 100644
--- a/net/rxrpc/af_rxrpc.c
+++ b/net/rxrpc/af_rxrpc.c
@@ -762,6 +762,7 @@ static __poll_t rxrpc_poll(struct file *file, struct socket *sock,
static int rxrpc_create(struct net *net, struct socket *sock, int protocol,
int kern)
{
+ struct rxrpc_net *rxnet;
struct rxrpc_sock *rx;
struct sock *sk;
@@ -801,6 +802,9 @@ static int rxrpc_create(struct net *net, struct socket *sock, int protocol,
rwlock_init(&rx->call_lock);
memset(&rx->srx, 0, sizeof(rx->srx));
+ rxnet = rxrpc_net(sock_net(&rx->sk));
+ timer_reduce(&rxnet->peer_keepalive_timer, jiffies + 1);
+
_leave(" = 0 [%p]", rx);
return 0;
}