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linux/drivers/net/ipvlan
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Dmitry Skorodumov c98eeb05d7 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 2026-01-08 10:14:00 +01:00
..
ipvlan.h ipvlan: hold lower dev to avoid possible use-after-free 2022-11-18 10:39:22 +00:00
ipvlan_core.c ipvlan: Ignore PACKET_LOOPBACK in handle_mode_l2() 2026-01-08 10:14:00 +01:00
ipvlan_l3s.c net: fix NULL pointer dereference in l3mdev_l3_rcv 2025-09-09 18:58:21 +02:00
ipvlan_main.c netdev_features: convert NETIF_F_LLTX to dev->lltx 2024-09-03 11:36:43 +02:00
ipvtap.c net: fill in MODULE_DESCRIPTION()s for ipvtap 2024-02-09 14:12:02 -08:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00