[v1.14] bpf: improve trace events in SNAT path #30835
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[ upstream commit 2853c52 ] [ backporter's notes: obtaining the pre-SNAT address is a bit more complicated in the v1.14 code base ...] 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>
[ upstream commit 1113d70 ] This helps to clarify the exact origin of a TO_NETWORK trace event. Signed-off-by: Julian Wiedmann <jwi@isovalent.com>
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Manual backport of #28723, as the SNAT code looks slightly different in
v1.14.Once this PR is merged, a GitHub action will update the labels of these PRs: