selftests/bpf: Fix sockmap_multi_channels reliability#11371
selftests/bpf: Fix sockmap_multi_channels reliability#11371kernel-patches-daemon-bpf[bot] wants to merge 1 commit intobpf_basefrom
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Previously I added a FIONREAD test for sockmap, but it can occasionally fail in CI [1]. The test sends 10 bytes in two segments (2 + 8). For UDP, FIONREAD only reports the length of the first datagram, not the total queued data. The original code used recv_timeout() expecting all 10 bytes, but under high system load, the second datagram may not yet be processed by the protocol stack, so recv would only return the first 2-byte datagram, causing a size mismatch failure. Fix this by receiving exactly the expected bytes (matching FIONREAD) in the first recv. The remaining datagram is then consumed in a second recv block, which is only reachable for UDP since TCP's expected already equals sizeof(buf). Test: ./test_progs -a sockmap_basic 410/1 sockmap_basic/sockmap create_update_free:OK ... Summary: 1/35 PASSED, 0 SKIPPED, 0 FAILED [1] https://github.com/kernel-patches/bpf/actions/runs/22919385910/job/66515395423 Cc: Jiayuan Chen <jiayuan.chen@linux.dev> Fixes: 17e2ce0 ("selftests/bpf: Add tests for FIONREAD and copied_seq") Signed-off-by: Jiayuan Chen <jiayuan.chen@shopee.com>
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At least one diff in series https://patchwork.kernel.org/project/netdevbpf/list/?series=1065440 irrelevant now. Closing PR. |
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Pull request for series with
subject: selftests/bpf: Fix sockmap_multi_channels reliability
version: 1
url: https://patchwork.kernel.org/project/netdevbpf/list/?series=1065440