Merge branch 'mitigate-double-allocations-in-ioam6_iptunnel'

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Justin Iurman says:

====================
Mitigate double allocations in ioam6_iptunnel

Commit dce525185b ("net: ipv6: ioam6_iptunnel: mitigate 2-realloc
issue") fixed the double allocation issue in ioam6_iptunnel. However,
since commit 92191dd107 ("net: ipv6: fix dst ref loops in rpl, seg6
and ioam6 lwtunnels"), the fix was left incomplete. Because the cache is
now empty when the dst_entry is the same post transformation in order to
avoid a reference loop, the double reallocation is back for such cases
(e.g., inline mode) which are valid for IOAM. This patch provides a way
to detect such cases without having a reference loop in the cache, and
so to avoid the double reallocation issue for all cases again.

v1: https://lore.kernel.org/netdev/20250410152432.30246-1-justin.iurman@uliege.be/T/#t
====================

Link: https://patch.msgid.link/20250415112554.23823-1-justin.iurman@uliege.be
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

...

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Paolo Abeni 2025-04-17 12:52:36 +02:00

parent 9a0b084a0f 47ce7c8545

commit 4a1f69b941

1 changed files with 54 additions and 22 deletions

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net/ipv6/ioam6_iptunnel.c

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