diff options
| author | Jianguo Wu <wujianguo@chinatelecom.cn> | 2023-03-09 10:03:36 +0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-03-10 21:27:15 -0800 |
| commit | 59a0b022aa249e3f5735d93de0849341722c4754 (patch) | |
| tree | 1529321d4b19132ab5407ad9d3ee0f959aa2e661 /drivers/net/ipvlan | |
| parent | 8ba572052a4b8fe5b205854d27e54e3486049b71 (diff) | |
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: c675e06a98a4 ("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>
Diffstat (limited to 'drivers/net/ipvlan')
| -rw-r--r-- | drivers/net/ipvlan/ipvlan_l3s.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ipvlan/ipvlan_l3s.c b/drivers/net/ipvlan/ipvlan_l3s.c index 943d26cbf39f..71712ea25403 100644 --- a/drivers/net/ipvlan/ipvlan_l3s.c +++ b/drivers/net/ipvlan/ipvlan_l3s.c @@ -101,6 +101,7 @@ static unsigned int ipvlan_nf_input(void *priv, struct sk_buff *skb, goto out; skb->dev = addr->master->dev; + skb->skb_iif = skb->dev->ifindex; len = skb->len + ETH_HLEN; ipvlan_count_rx(addr->master, len, true, false); out: |