This is a note to let you know that I've just added the patch titled
vti: don't allow to add the same tunnel twice
to the 3.14-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:
vti-don-t-allow-to-add-the-same-tunnel-twice.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Wed May 28 21:03:54 PDT 2014
From: Nicolas Dichtel <nicolas.dichtel@xxxxxxxxx>
Date: Fri, 11 Apr 2014 15:51:19 +0200
Subject: vti: don't allow to add the same tunnel twice
From: Nicolas Dichtel <nicolas.dichtel@xxxxxxxxx>
[ Upstream commit 8d89dcdf80d88007647945a753821a06eb6cc5a5 ]
Before the patch, it was possible to add two times the same tunnel:
ip l a vti1 type vti remote 10.16.0.121 local 10.16.0.249 key 41
ip l a vti2 type vti remote 10.16.0.121 local 10.16.0.249 key 41
It was possible, because ip_tunnel_newlink() calls ip_tunnel_find() with the
argument dev->type, which was set only later (when calling ndo_init handler
in register_netdevice()). Let's set this type in the setup handler, which is
called before newlink handler.
Introduced by commit b9959fd3b0fa ("vti: switch to new ip tunnel code").
CC: Cong Wang <amwang@xxxxxxxxxx>
CC: Steffen Klassert <steffen.klassert@xxxxxxxxxxx>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/ipv4/ip_vti.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/ipv4/ip_vti.c
+++ b/net/ipv4/ip_vti.c
@@ -207,6 +207,7 @@ static const struct net_device_ops vti_n
static void vti_tunnel_setup(struct net_device *dev)
{
dev->netdev_ops = &vti_netdev_ops;
+ dev->type = ARPHRD_TUNNEL;
ip_tunnel_setup(dev, vti_net_id);
}
@@ -218,7 +219,6 @@ static int vti_tunnel_init(struct net_de
memcpy(dev->dev_addr, &iph->saddr, 4);
memcpy(dev->broadcast, &iph->daddr, 4);
- dev->type = ARPHRD_TUNNEL;
dev->hard_header_len = LL_MAX_HEADER + sizeof(struct iphdr);
dev->mtu = ETH_DATA_LEN;
dev->flags = IFF_NOARP;
Patches currently in stable-queue which might be from nicolas.dichtel@xxxxxxxxx are
queue-3.14/gre-don-t-allow-to-add-the-same-tunnel-twice.patch
queue-3.14/ip6_gre-don-t-allow-to-remove-the-fb_tunnel_dev.patch
queue-3.14/net-fix-ns_capable-check-in-sock_diag_put_filterinfo.patch
queue-3.14/vti-don-t-allow-to-add-the-same-tunnel-twice.patch
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