This is a note to let you know that I've just added the patch titled
vxlan: use dev->needed_headroom instead of dev->hard_header_len
to the 3.10-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:
vxlan-use-dev-needed_headroom-instead-of-dev-hard_header_len.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From foo@baz Wed Jun 18 20:08:21 PDT 2014
From: Cong Wang <[email protected]>
Date: Thu, 12 Jun 2014 11:53:10 -0700
Subject: vxlan: use dev->needed_headroom instead of dev->hard_header_len
From: Cong Wang <[email protected]>
[ Upstream commit 2853af6a2ea1a8ed09b09dd4fb578e7f435e8d34 ]
When we mirror packets from a vxlan tunnel to other device,
the mirror device should see the same packets (that is, without
outer header). Because vxlan tunnel sets dev->hard_header_len,
tcf_mirred() resets mac header back to outer mac, the mirror device
actually sees packets with outer headers
Vxlan tunnel should set dev->needed_headroom instead of
dev->hard_header_len, like what other ip tunnels do. This fixes
the above problem.
Cc: "David S. Miller" <[email protected]>
Cc: stephen hemminger <[email protected]>
Cc: Pravin B Shelar <[email protected]>
Signed-off-by: Cong Wang <[email protected]>
Signed-off-by: Cong Wang <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/net/vxlan.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -1314,7 +1314,7 @@ static void vxlan_setup(struct net_devic
eth_hw_addr_random(dev);
ether_setup(dev);
- dev->hard_header_len = ETH_HLEN + VXLAN_HEADROOM;
+ dev->needed_headroom = ETH_HLEN + VXLAN_HEADROOM;
dev->netdev_ops = &vxlan_netdev_ops;
dev->destructor = vxlan_free;
@@ -1454,7 +1454,7 @@ static int vxlan_newlink(struct net *net
dev->mtu = lowerdev->mtu - VXLAN_HEADROOM;
/* update header length based on lower device */
- dev->hard_header_len = lowerdev->hard_header_len +
+ dev->needed_headroom = lowerdev->hard_header_len +
VXLAN_HEADROOM;
}
Patches currently in stable-queue which might be from [email protected] are
queue-3.10/vxlan-use-dev-needed_headroom-instead-of-dev-hard_header_len.patch
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