[v1.15] bpf: ifindex trace fixes#33575
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aditighag merged 3 commits intocilium:v1.15from Jul 9, 2024
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[ upstream commit 2a0bc76 ] The encap helpers were meant to abstract from differences between TC and XDP. Therefore ctx_set_encap_info() provides the ifindex for TC, and setting the ifindex also indicates that a redirect to encap interface is possible (rather than manually adding the overlay headers + FIB lookup). The downside is that __encap_with_nodeid() for TC currently emits a trace notification without the ifindex set to ENCAP_IFINDEX. Fix this up manually by moving the `ifindex` initialization up. Reported-by: Tomasz Tarczyński <tomasz.tarczynski@isovalent.com> Signed-off-by: Julian Wiedmann <jwi@isovalent.com>
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[ upstream commit 7898d95 ] [ backporter's notes: minor changes to config_replacement.h and template.go to adjust for how the templating works on v1.15 ] Make the ifindex of an endpoint available to the attached BPF program, so that it can be used by a subsequent patch. We can most likely unify this later with NATIVE_DEV_IFINDEX, which is only provided for native devices. Signed-off-by: Julian Wiedmann <jwi@isovalent.com>
[ upstream commit 3c8ff5b ] ipv*_policy() takes an `ifindex` parameter, and exclusively uses it to fill trace notifications. But for some cases the provided ifindex is currently 0 (for instance in a configuration with per-EP routing, when calling from to-container). Just provide the actual interface index instead. Reported-by: Tomasz Tarczyński <tomasz.tarczynski@isovalent.com> Signed-off-by: Julian Wiedmann <jwi@isovalent.com>
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Jul 9, 2024
This was referenced Jul 10, 2024
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Minor adjustments in the templating patch + resolving trivial conflicts, here is a manual backport of
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