Subject: [PATCH 0/2] bpf: 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 redirected execution. 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(-) -- 2.53.0
