net: connection: Packet sockets cause packets to drop #93245
Description
Describe the bug
If CONFIG_NET_SOCKETS_PACKET is selected and a socket of type AF_PACKET and SOCK_RAW is open, then it consumes all packets without giving them a chances to be handled by L2. This includes all packets that should not be consumed in that why like arp, icmp, lldp, ... etc.
Regression
- This is a regression.
Steps to reproduce
(Seen based on code analysis).
Probably:
CONFIG_NET_SOCKETS_PACKET=y- open connection of type
AF_PACKET/SOCK_RAW - packets no longer reach handlers registered using
ETH_NET_L3_REGISTER(arp,lldp, ...)
Relevant log output
Impact
Annoyance – Minor irritation; no significant impact on usability or functionality.
Environment
No response
Additional Context
Fix is probably to unconditionally NET_CONTINUE packets at the time of inputting into connections of type AF_PACKET, `SOCK_RAW``, as the system can not know at that time if the packet is needed elsewhere.