}
}
+static void geneve_notify_del_rx_port(struct geneve_sock *gs)
+{
+ struct sock *sk = gs->sock->sk;
+ sa_family_t sa_family = sk->sk_family;
+
+ if (sa_family == AF_INET)
+ udp_del_offload(&gs->udp_offloads);
+}
+
/* Callback from net/ipv4/udp.c to receive packets */
static int geneve_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
{
geneve_rcv_t *rcv, void *data,
bool no_share, bool ipv6)
{
+ struct geneve_net *gn = net_generic(net, geneve_net_id);
struct geneve_sock *gs;
gs = geneve_socket_create(net, port, rcv, data, ipv6);
if (no_share) /* Return error if sharing is not allowed. */
return ERR_PTR(-EINVAL);
+ spin_lock(&gn->sock_lock);
gs = geneve_find_sock(net, port);
- if (gs) {
- if (gs->rcv == rcv)
- atomic_inc(&gs->refcnt);
- else
+ if (gs && ((gs->rcv != rcv) ||
+ !atomic_add_unless(&gs->refcnt, 1, 0)))
gs = ERR_PTR(-EBUSY);
- } else {
+ spin_unlock(&gn->sock_lock);
+
+ if (!gs)
gs = ERR_PTR(-EINVAL);
- }
return gs;
}
void geneve_sock_release(struct geneve_sock *gs)
{
+ struct net *net = sock_net(gs->sock->sk);
+ struct geneve_net *gn = net_generic(net, geneve_net_id);
+
if (!atomic_dec_and_test(&gs->refcnt))
return;
+ spin_lock(&gn->sock_lock);
+ hlist_del_rcu(&gs->hlist);
+ geneve_notify_del_rx_port(gs);
+ spin_unlock(&gn->sock_lock);
+
queue_work(geneve_wq, &gs->del_work);
}
EXPORT_SYMBOL_GPL(geneve_sock_release);