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e874be276e
Same import process as previous tests.
Also add CONFIG_NET_SCH_FQ to config, as one test uses that.
Same test process as previous tests. Both with and without debug mode.
Recording the steps once:
make mrproper
vng --build \
--config tools/testing/selftests/net/packetdrill/config \
--config kernel/configs/debug.config
vng -v --run . --user root --cpus 4 -- \
make -C tools/testing/selftests TARGETS=net/packetdrill run_tests
Link: https://github.com/linux-netdev/nipa/wiki/How-to-run-netdev-selftests-CI-style#how-to-build
Signed-off-by: Willem de Bruijn <willemb@google.com>
Acked-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20240912005317.1253001-4-willemdebruijn.kernel@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
39 lines
1.2 KiB
Plaintext
39 lines
1.2 KiB
Plaintext
// SPDX-License-Identifier: GPL-2.0
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// Test of slow start when application-limited: in this case,
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// with IW10, if we don't fully use our cwnd but instead
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// send just 9 packets, then cwnd should grow to twice that
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// value, or 18 packets.
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// Set up config.
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`./defaults.sh`
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0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3
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+0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
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+0 bind(3, ..., ...) = 0
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+0 listen(3, 1) = 0
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+.1 < S 0:0(0) win 32792 <mss 1000,sackOK,nop,nop,nop,wscale 7>
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+0 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 8>
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+.1 < . 1:1(0) ack 1 win 257
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+0 accept(3, ..., ...) = 4
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+0 setsockopt(4, SOL_SOCKET, SO_SNDBUF, [200000], 4) = 0
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+0 write(4, ..., 9000) = 9000
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+0 > P. 1:9001(9000) ack 1
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+0 %{ assert tcpi_snd_cwnd == 10, tcpi_snd_cwnd }%
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+.105 < . 1:1(0) ack 2001 win 257
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+0 %{ assert tcpi_snd_cwnd == 12, tcpi_snd_cwnd }%
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+.005 < . 1:1(0) ack 4001 win 257
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+0 %{ assert tcpi_snd_cwnd == 14, tcpi_snd_cwnd }%
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+.005 < . 1:1(0) ack 6001 win 257
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+0 %{ assert tcpi_snd_cwnd == 16, tcpi_snd_cwnd }%
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+.005 < . 1:1(0) ack 8001 win 257
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+0 %{ assert tcpi_snd_cwnd == 18, tcpi_snd_cwnd }%
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+.005 < . 1:1(0) ack 9001 win 257
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+0 %{ assert tcpi_snd_cwnd == 18, tcpi_snd_cwnd }%
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