linux-stable/drivers/net/ipvlan
Jianguo Wu 59a0b022aa ipvlan: Make skb->skb_iif track skb->dev for l3s mode
For l3s mode, skb->dev is set to ipvlan interface in ipvlan_nf_input():
  skb->dev = addr->master->dev
but, skb->skb_iif remain unchanged, this will cause socket lookup failed
if a target socket is bound to a interface, like the following example:

  ip link add ipvlan0 link eth0 type ipvlan mode l3s
  ip addr add dev ipvlan0 192.168.124.111/24
  ip link set ipvlan0 up

  ping -c 1 -I ipvlan0 8.8.8.8
  100% packet loss

This is because there is no match sk in __raw_v4_lookup() as sk->sk_bound_dev_if != dif(skb->skb_iif).
Fix this by make skb->skb_iif track skb->dev in ipvlan_nf_input().

Fixes: c675e06a98 ("ipvlan: decouple l3s mode dependencies from other modes")
Signed-off-by: Jianguo Wu <wujianguo@chinatelecom.cn>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Link: https://lore.kernel.org/r/29865b1f-6db7-c07a-de89-949d3721ea30@163.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-03-10 21:27:15 -08:00
..
ipvlan.h ipvlan: hold lower dev to avoid possible use-after-free 2022-11-18 10:39:22 +00:00
ipvlan_core.c ipvlan: use skb_ip_totlen in ipvlan_get_L3_hdr 2023-02-01 20:54:27 -08:00
ipvlan_l3s.c ipvlan: Make skb->skb_iif track skb->dev for l3s mode 2023-03-10 21:27:15 -08:00
ipvlan_main.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-11-29 13:04:52 -08:00
ipvtap.c driver core: class: make namespace and get_ownership take const * 2022-11-09 15:49:32 +01:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00