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bpf: nat: tolerate unhandled protocol types in revSNAT path #25740

Merged
merged 1 commit into from
May 30, 2023
Merged

bpf: nat: tolerate unhandled protocol types in revSNAT path #25740

merged 1 commit into from
May 30, 2023

Commits on May 29, 2023

  1. bpf: nat: tolerate unhandled protocol types in revSNAT path 

    In the past we would just pass up packets with unknown protocols, and let
the next layer (or the stack) deal with them.

cilium#19753 recently added error handling
for the revSNAT paths, so that we can catch errors while eg. rewriting the
packet headers.

But we want to preserve the old behaviour of tolerating unknown protocol
types. So return NAT_PUNT_TO_STACK from a few additional ICMP paths.

Signed-off-by: Julian Wiedmann <jwi@isovalent.com>
    @julianwiedmann
    julianwiedmann committed May 29, 2023
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