[PATCH 4.14 025/109] udp: Unbreak modules that rely on external __skb_recv_udp() availability

From: Greg Kroah-Hartman
Date: Tue Oct 16 2018 - 13:18:01 EST

4.14-stable review patch. If anyone has any objections, please let me know.


From: Jiri Kosina <jkosina@xxxxxxx>

[ Upstream commit 7e823644b60555f70f241274b8d0120dd919269a ]

Commit 2276f58ac589 ("udp: use a separate rx queue for packet reception")
turned static inline __skb_recv_udp() from being a trivial helper around
__skb_recv_datagram() into a UDP specific implementaion, making it
EXPORT_SYMBOL_GPL() at the same time.

There are external modules that got broken by __skb_recv_udp() not being
visible to them. Let's unbreak them by making __skb_recv_udp EXPORT_SYMBOL().

Rationale (one of those) why this is actually "technically correct" thing
to do: __skb_recv_udp() used to be an inline wrapper around
__skb_recv_datagram(), which itself (still, and correctly so, I believe)

Cc: Paolo Abeni <pabeni@xxxxxxxxxx>
Cc: Eric Dumazet <edumazet@xxxxxxxxxx>
Fixes: 2276f58ac589 ("udp: use a separate rx queue for packet reception")
Signed-off-by: Jiri Kosina <jkosina@xxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
net/ipv4/udp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1565,7 +1565,7 @@ busy_check:
*err = error;
return NULL;

* This should be easy, if there is something there we