geneve: Remove workqueue.
The work queue is used only to free the UDP socket upon destruction.
This is not necessary with Geneve and generally makes the code more
difficult to reason about. It also introduces nondeterministic
behavior such as when a socket is rapidly deleted and recreated, which
could fail as the the deletion happens asynchronously.
Signed-off-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/geneve.c b/net/ipv4/geneve.c
index 19e256e..136a829 100644
--- a/net/ipv4/geneve.c
+++ b/net/ipv4/geneve.c
@@ -61,8 +61,6 @@
static int geneve_net_id;
-static struct workqueue_struct *geneve_wq;
-
static inline struct genevehdr *geneve_hdr(const struct sk_buff *skb)
{
return (struct genevehdr *)(udp_hdr(skb) + 1);
@@ -307,15 +305,6 @@
return 1;
}
-static void geneve_del_work(struct work_struct *work)
-{
- struct geneve_sock *gs = container_of(work, struct geneve_sock,
- del_work);
-
- udp_tunnel_sock_release(gs->sock);
- kfree_rcu(gs, rcu);
-}
-
static struct socket *geneve_create_sock(struct net *net, bool ipv6,
__be16 port)
{
@@ -356,8 +345,6 @@
if (!gs)
return ERR_PTR(-ENOMEM);
- INIT_WORK(&gs->del_work, geneve_del_work);
-
sock = geneve_create_sock(net, ipv6, port);
if (IS_ERR(sock)) {
kfree(gs);
@@ -430,7 +417,8 @@
geneve_notify_del_rx_port(gs);
spin_unlock(&gn->sock_lock);
- queue_work(geneve_wq, &gs->del_work);
+ udp_tunnel_sock_release(gs->sock);
+ kfree_rcu(gs, rcu);
}
EXPORT_SYMBOL_GPL(geneve_sock_release);
@@ -458,10 +446,6 @@
{
int rc;
- geneve_wq = alloc_workqueue("geneve", 0, 0);
- if (!geneve_wq)
- return -ENOMEM;
-
rc = register_pernet_subsys(&geneve_net_ops);
if (rc)
return rc;
@@ -474,7 +458,6 @@
static void __exit geneve_cleanup_module(void)
{
- destroy_workqueue(geneve_wq);
unregister_pernet_subsys(&geneve_net_ops);
}
module_exit(geneve_cleanup_module);