diff options
| author | Taehee Yoo <ap420073@gmail.com> | 2020-02-27 13:26:15 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-02-27 20:45:07 +0100 |
| commit | ad3cc31b599ea80f06b29ebdc18b3a39878a48d6 (patch) | |
| tree | bf4be7bd700ab44340fb4378717c52ca9e5f37e4 /drivers/net | |
| parent | net: rmnet: fix bridge mode bugs (diff) | |
| download | linux-ad3cc31b599ea80f06b29ebdc18b3a39878a48d6.tar.xz linux-ad3cc31b599ea80f06b29ebdc18b3a39878a48d6.zip | |
net: rmnet: fix packet forwarding in rmnet bridge mode
Packet forwarding is not working in rmnet bridge mode.
Because when a packet is forwarded, skb_push() for an ethernet header
is needed. But it doesn't call skb_push().
So, the ethernet header will be lost.
Test commands:
modprobe rmnet
ip netns add nst
ip netns add nst2
ip link add veth0 type veth peer name veth1
ip link add veth2 type veth peer name veth3
ip link set veth1 netns nst
ip link set veth3 netns nst2
ip link add rmnet0 link veth0 type rmnet mux_id 1
ip link set veth2 master rmnet0
ip link set veth0 up
ip link set veth2 up
ip link set rmnet0 up
ip a a 192.168.100.1/24 dev rmnet0
ip netns exec nst ip link set veth1 up
ip netns exec nst ip a a 192.168.100.2/24 dev veth1
ip netns exec nst2 ip link set veth3 up
ip netns exec nst2 ip a a 192.168.100.3/24 dev veth3
ip netns exec nst2 ping 192.168.100.2
Fixes: 60d58f971c10 ("net: qualcomm: rmnet: Implement bridge mode")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c index 074a8b326c30..29a7bfa2584d 100644 --- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c +++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c @@ -159,6 +159,9 @@ static int rmnet_map_egress_handler(struct sk_buff *skb, static void rmnet_bridge_handler(struct sk_buff *skb, struct net_device *bridge_dev) { + if (skb_mac_header_was_set(skb)) + skb_push(skb, skb->mac_len); + if (bridge_dev) { skb->dev = bridge_dev; dev_queue_xmit(skb); |