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linux/drivers/net/ipvlan
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Dmitry Skorodumov 194cd36ec0 ipvlan: Ignore PACKET_LOOPBACK in handle_mode_l2() 
[ Upstream commit 0c57ff008a ]

Packets with pkt_type == PACKET_LOOPBACK are captured by
handle_frame() function, but they don't have L2 header.
We should not process them in handle_mode_l2().

This doesn't affect old L2 functionality, since handling
was anyway incorrect.

Handle them the same way as in br_handle_frame():
just pass the skb.

To observe invalid behaviour, just start "ping -b" on bcast address
of port-interface.

Fixes: 2ad7bf3638 ("ipvlan: Initial check-in of the IPVLAN driver.")
Signed-off-by: Dmitry Skorodumov <skorodumov.dmitry@huawei.com>
Link: https://patch.msgid.link/20251202103906.4087675-1-skorodumov.dmitry@huawei.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2026-01-19 13:09:43 +01:00
..
ipvlan.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ipvlan_core.c ipvlan: Ignore PACKET_LOOPBACK in handle_mode_l2() 2026-01-19 13:09:43 +01:00
ipvlan_l3s.c ipvlan: fix bound dev checking for IPv6 l3s mode 2023-06-21 15:59:17 +02:00
ipvlan_main.c ipvlan: properly track tx_errors 2023-11-20 11:08:16 +01:00
ipvtap.c net: ipvtap - add __init/__exit annotations to module init/exit funcs 2022-08-31 17:16:40 +02:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00