net: ip: make ip_mc_validate_source() return drop reason

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Make ip_mc_validate_source() return drop reason, and adjust the call of
it in ip_route_input_mc().

Another caller of it is ip_rcv_finish_core->udp_v4_early_demux, and the
errno is not checked in detail, so we don't do more adjustment for it.

The drop reason "SKB_DROP_REASON_IP_LOCALNET" is added in this commit.

Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

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Menglong Dong 2024-11-07 20:55:55 +08:00 • committed by Paolo Abeni

parent c6c670784b

commit d46f827016

3 changed files with 26 additions and 19 deletions

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3

include/net/dropreason-core.h

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7

include/net/route.h

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35

net/ipv4/route.c

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