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authorJames Chapman <jchapman@katalix.com>2024-08-19 15:33:33 +0100
committerJakub Kicinski <kuba@kernel.org>2024-08-20 16:52:28 -0700
commitbc3dd9ed04d69cba3bb603da06fa26d888233cff (patch)
tree9df1c1cf93fce3d2bbbabee9f33cf222520f3db2
parent8594d9b85c07f05e431bd07e895c2a3ad9b85d6f (diff)
l2tp: use skb_queue_purge in l2tp_ip_destroy_sock
Recent commit ed8ebee6def7 ("l2tp: have l2tp_ip_destroy_sock use ip_flush_pending_frames") was incorrect in that l2tp_ip does not use socket cork and ip_flush_pending_frames is for sockets that do. Use __skb_queue_purge instead and remove the unnecessary lock. Also unexport ip_flush_pending_frames since it was originally exported in commit 4ff8863419cd ("ipv4: export ip_flush_pending_frames") for l2tp and is not used by other modules. Suggested-by: xiyou.wangcong@gmail.com Signed-off-by: James Chapman <jchapman@katalix.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20240819143333.3204957-1-jchapman@katalix.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
-rw-r--r--net/ipv4/ip_output.c1
-rw-r--r--net/l2tp/l2tp_ip.c4
2 files changed, 1 insertions, 4 deletions
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 8a10a7c67834..b90d0f78ac80 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -1534,7 +1534,6 @@ void ip_flush_pending_frames(struct sock *sk)
{
__ip_flush_pending_frames(sk, &sk->sk_write_queue, &inet_sk(sk)->cork.base);
}
-EXPORT_SYMBOL_GPL(ip_flush_pending_frames);
struct sk_buff *ip_make_skb(struct sock *sk,
struct flowi4 *fl4,
diff --git a/net/l2tp/l2tp_ip.c b/net/l2tp/l2tp_ip.c
index 39f3f1334c4a..4bc24fddfd52 100644
--- a/net/l2tp/l2tp_ip.c
+++ b/net/l2tp/l2tp_ip.c
@@ -258,9 +258,7 @@ static void l2tp_ip_destroy_sock(struct sock *sk)
{
struct l2tp_tunnel *tunnel;
- lock_sock(sk);
- ip_flush_pending_frames(sk);
- release_sock(sk);
+ __skb_queue_purge(&sk->sk_write_queue);
tunnel = l2tp_sk_to_tunnel(sk);
if (tunnel) {