l2tp: Support different protocol versions with same IP/port quadruple

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628bc3e5a1 ("l2tp: Support several sockets with same IP/port quadruple")
added support for several L2TPv2 tunnels using the same IP/port quadruple,
but if an L2TPv3 socket exists it could eat all the trafic. We thus have to
first use the version from the packet to get the proper tunnel, and only
then check that the version matches.

Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Reviewed-by: James Chapman <jchapman@katalix.com>
Link: https://lore.kernel.org/r/20240509205812.4063198-1-samuel.thibault@ens-lyon.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Samuel Thibault 2024-05-09 22:58:12 +02:00 • committed by Jakub Kicinski

parent ec8c25746e

commit 364798056f

1 changed files with 10 additions and 8 deletions

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net/l2tp/l2tp_core.c

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