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selftests/xsk: properly handle batch ending in the middle of a packet

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Referenced commit reduced the scope of the variable pkt, so now it has to
be reinitialized via pkt_stream_get_next_rx_pkt(), which also increments
some counters. When the packet is interrupted by the batch ending, pkt
stream therefore proceeds to the next packet, while xsk ring still contains
the previous one, this results in a pkt_nb mismatch.

Decrement the affected counters when packet is interrupted.

Fixes: 8913e653e9 ("selftests/xsk: Iterate over all the sockets in the receive pkts function")
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Larysa Zaremba <larysa.zaremba@intel.com>
Link: https://lore.kernel.org/r/20260203155103.2305816-2-larysa.zaremba@intel.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Larysa Zaremba
2026-02-03 16:50:57 +01:00
committed by Alexei Starovoitov
parent 1ace9bac1a
commit 42e41b2a0a
1 changed files with 2 additions and 0 deletions
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2
tools/testing/selftests/bpf/prog_tests/test_xsk.c
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@@ -1090,6 +1090,8 @@ static int __receive_pkts(struct test_spec *test, struct xsk_socket_info *xsk)
xsk_ring_prod__cancel(&umem->fq, nb_frags);
}
frags_processed -= nb_frags;
pkt_stream_cancel(pkt_stream);
pkts_sent--;
}
if (ifobj->use_fill_ring)