Subject: [PATCH 0/2] preserve rx_queue_index across XDP redirects

XDP programs executed after redirect through cpumap and devmap
currently lose ingress RX queue information because rx_queue_index
is not preserved across xdp_buff to xdp_frame conversion.

Preserve rx_queue_index in struct xdp_frame and restore it when
rebuilding xdp_rxq_info for redirected execution paths.

Add a selftest validating that ctx->rx_queue_index remains available
through xdp_metadata after redirect.

Testing:

* Built modified kernel objects
* Ran tools/testing/selftests/bpf/test_progs -t xdp_metadata -v
* Verified xdp_metadata passes
* Added explicit rx_queue_index assertion

Siddharth C (1):
  bpf: preserve rx_queue_index across XDP redirects

Siddharth_Cibi (1):
  selftests/bpf: validate rx_queue_index in xdp_metadata

 include/net/xdp.h                                     | 2 ++
 kernel/bpf/cpumap.c                                   | 2 +-
 kernel/bpf/devmap.c                                   | 5 ++++-
 net/core/xdp.c                                        | 1 +
 tools/testing/selftests/bpf/prog_tests/xdp_metadata.c | 3 ++-
 tools/testing/selftests/bpf/progs/xdp_metadata.c      | 2 +-
 tools/testing/selftests/bpf/xdp_metadata.h            | 1 +
 7 files changed, 12 insertions(+), 4 deletions(-)

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2.53.0