netdev - [PATCH AUTOSEL 6.0 09/44] selftests/net: don't tests batched TCP io

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Message-Id: <20221119021124.1773699-9-sashal@kernel.org>
Date:   Fri, 18 Nov 2022 21:10:49 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Pavel Begunkov <asml.silence@...il.com>,
        Jens Axboe <axboe@...nel.dk>, Sasha Levin <sashal@...nel.org>,
        davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, shuah@...nel.org, netdev@...r.kernel.org,
        linux-kselftest@...r.kernel.org
Subject: [PATCH AUTOSEL 6.0 09/44] selftests/net: don't tests batched TCP io_uring zc

From: Pavel Begunkov <asml.silence@...il.com>

[ Upstream commit 9921d5013a6e51892623bf2f1c5b49eaecda55ac ]

It doesn't make sense batch submitting io_uring requests to a single TCP
socket without linking or some other kind of ordering. Moreover, it
causes spurious -EINTR fails due to interaction with task_work. Disable
it for now and keep queue depth=1.

Signed-off-by: Pavel Begunkov <asml.silence@...il.com>
Link: https://lore.kernel.org/r/b547698d5938b1b1a898af1c260188d8546ded9a.1666700897.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@...nel.dk>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 tools/testing/selftests/net/io_uring_zerocopy_tx.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/net/io_uring_zerocopy_tx.sh b/tools/testing/selftests/net/io_uring_zerocopy_tx.sh
index 32aa6e9dacc2..9ac4456d48fc 100755
--- a/tools/testing/selftests/net/io_uring_zerocopy_tx.sh
+++ b/tools/testing/selftests/net/io_uring_zerocopy_tx.sh
@@ -29,7 +29,7 @@ if [[ "$#" -eq "0" ]]; then
 	for IP in "${IPs[@]}"; do
 		for mode in $(seq 1 3); do
 			$0 "$IP" udp -m "$mode" -t 1 -n 32
-			$0 "$IP" tcp -m "$mode" -t 1 -n 32
+			$0 "$IP" tcp -m "$mode" -t 1 -n 1
 		done
 	done
 
-- 
2.35.1