This is a note to let you know that I've just added the patch titled
bareudp: Pull inner IP header on xmit.
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
bareudp-pull-inner-ip-header-on-xmit.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 6af2593e5bf9c790eed93fb9f18ca4f9130cd811
Author: Guillaume Nault <gnault@xxxxxxxxxx>
Date: Wed Sep 11 11:21:05 2024 +0200
bareudp: Pull inner IP header on xmit.
[ Upstream commit c471236b2359e6b27388475dd04fff0a5e2bf922 ]
Both bareudp_xmit_skb() and bareudp6_xmit_skb() read their skb's inner
IP header to get its ECN value (with ip_tunnel_ecn_encap()). Therefore
we need to ensure that the inner IP header is part of the skb's linear
data.
Fixes: 571912c69f0e ("net: UDP tunnel encapsulation module for tunnelling different protocols like MPLS, IP, NSH etc.")
Signed-off-by: Guillaume Nault <gnault@xxxxxxxxxx>
Reviewed-by: Willem de Bruijn <willemb@xxxxxxxxxx>
Link: https://patch.msgid.link/267328222f0a11519c6de04c640a4f87a38ea9ed.1726046181.git.gnault@xxxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/bareudp.c b/drivers/net/bareudp.c
index 8efd61bdee997..826f912ea820d 100644
--- a/drivers/net/bareudp.c
+++ b/drivers/net/bareudp.c
@@ -311,6 +311,9 @@ static int bareudp_xmit_skb(struct sk_buff *skb, struct net_device *dev,
__be32 saddr;
int err;
+ if (!skb_vlan_inet_prepare(skb, skb->protocol != htons(ETH_P_TEB)))
+ return -EINVAL;
+
if (!sock)
return -ESHUTDOWN;
@@ -374,6 +377,9 @@ static int bareudp6_xmit_skb(struct sk_buff *skb, struct net_device *dev,
__be16 sport;
int err;
+ if (!skb_vlan_inet_prepare(skb, skb->protocol != htons(ETH_P_TEB)))
+ return -EINVAL;
+
if (!sock)
return -ESHUTDOWN;
