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bpf: improve trace events in SNAT path #28723

Merged
merged 2 commits into from
Feb 6, 2024
Merged

bpf: improve trace events in SNAT path #28723

merged 2 commits into from
Feb 6, 2024

Commits on Feb 6, 2024

  1. bpf: nat: report pre-SNAT address in trace event 

    When applying SNAT to a packet, also report the original source address in
the subsequent trace event. This helps to associate the internal and
external view of a connection.

We use the `orig_addr` field in the trace event, which was originally
introduced back with b3aa583 ("bpf: Report original source IP in TRACE_TO_LXC")

Signed-off-by: Julian Wiedmann <jwi@isovalent.com>
    @julianwiedmann
    julianwiedmann committed Feb 6, 2024
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  2. bpf: nodeport: populate ifindex in NAT trace event 

    This helps to clarify the exact origin of a TO_NETWORK trace event.

Signed-off-by: Julian Wiedmann <jwi@isovalent.com>
    @julianwiedmann
    julianwiedmann committed Feb 6, 2024
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