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selftests/net: packetdrill: pass send_omit_free to MSG_ZEROCOPY tests

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The --send_omit_free flag is needed for TCP zero copy tests, to ensure
that packetdrill doesn't free the send() buffer after the send() call.

Fixes: 1e42f73fd3 ("selftests/net: packetdrill: import tcp/zerocopy")
Closes: https://lore.kernel.org/netdev/20251124071831.4cbbf412@kernel.org/
Suggested-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20251125234029.1320984-1-willemdebruijn.kernel@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Willem de Bruijn
2025-11-25 18:35:05 -05:00
committed by Jakub Kicinski
parent af7273cc7a
commit c01a6e5b2e
12 changed files with 29 additions and 0 deletions
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2
tools/testing/selftests/net/packetdrill/tcp_zerocopy_fastopen-server.pkt
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@@ -4,6 +4,8 @@
// send data with MSG_FASTOPEN | MSG_ZEROCOPY and verify that the
// kernel returns the notification ID.
--send_omit_free // do not reuse send buffers with zerocopy
`./defaults.sh
./set_sysctls.py /proc/sys/net/ipv4/tcp_fastopen=0x207`