udp: check udp sock encap_type in __udp_lib_err

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There is a chance that __udp4/6_lib_lookup() returns a udp encap
sock in __udp_lib_err(), like the udp encap listening sock may
use the same port as remote encap port, in which case it should
go to __udp4/6_lib_err_encap() for more validation before
processing the icmp packet.

This patch is to check encap_type in __udp_lib_err() for the
further validation for a encap sock.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Xin Long 2020-10-29 15:04:55 +08:00 • committed by Jakub Kicinski

parent 1fb7419198

commit d26796ae58

2 changed files with 2 additions and 2 deletions

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2

net/ipv4/udp.c

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2

net/ipv6/udp.c

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