selftests/xsk: Add tests for XDP tail adjustment in AF_XDP #8525
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Add pkt_stream_replace_ifobject function to replace the packet stream for a given ifobject. Enable separate TX and RX packet replacement, allowing RX side packet length adjustments using bpf_xdp_adjust_tail() in the upcoming patch. Currently, pkt_stream_replace() works on both TX and RX packet streams, and this new function provides the ability to modify one of them. Signed-off-by: Tushar Vyavahare <[email protected]>
Introduce tail adjustment functionality in xskxceiver using bpf_xdp_adjust_tail(). Add `xsk_xdp_adjust_tail` to modify packet sizes and drop unmodified packets. Implement `is_adjust_tail_supported` to check helper availability. Develop packet resizing tests, including shrinking and growing scenarios, with functions for both single-buffer and multi-buffer cases. Update the test framework to handle various scenarios and adjust MTU settings. These changes enhance the testing of packet tail adjustments, improving AF_XDP framework reliability. Signed-off-by: Tushar Vyavahare <[email protected]>
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Pull request for series with
subject: selftests/xsk: Add tests for XDP tail adjustment in AF_XDP
version: 1
url: https://patchwork.kernel.org/project/netdevbpf/list/?series=935912