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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>
51 lines
1.5 KiB
Plaintext
51 lines
1.5 KiB
Plaintext
// SPDX-License-Identifier: GPL-2.0
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// Test of slow start after window update
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// This test expects tso size to be at least initial cwnd * mss
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`./defaults.sh
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./set_sysctls.py /proc/sys/net/ipv4/tcp_slow_start_after_idle=1 \
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/proc/sys/net/ipv4/tcp_min_tso_segs=10`
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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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+0 < S 0:0(0) win 65535 <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 511
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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, ..., 26000) = 26000
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+0 > P. 1:5001(5000) ack 1
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+0 > P. 5001:10001(5000) ack 1
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+0 %{ assert tcpi_snd_cwnd == 10, tcpi_snd_cwnd }%
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+.1 < . 1:1(0) ack 10001 win 511
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+0 %{ assert tcpi_snd_cwnd == 20, tcpi_snd_cwnd }%
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+0 > P. 10001:20001(10000) ack 1
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+0 > P. 20001:26001(6000) ack 1
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+.1 < . 1:1(0) ack 26001 win 0
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+0 %{ assert tcpi_snd_cwnd == 36, tcpi_snd_cwnd }%
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+0 write(4, ..., 20000) = 20000
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// 1st win0 probe
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+.3~+.310 > . 26000:26000(0) ack 1
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+0 %{ assert tcpi_snd_cwnd == 36, tcpi_snd_cwnd }%
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// 2nd win0 probe
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+.6~+.620 > . 26000:26000(0) ack 1
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+0 %{ assert tcpi_snd_cwnd == 36, tcpi_snd_cwnd }%
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// 3rd win0 probe
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+1.2~+1.240 > . 26000:26000(0) ack 1
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+0 %{ assert tcpi_snd_cwnd == 36, tcpi_snd_cwnd }%
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+.9 < . 1:1(0) ack 26001 win 511
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+0 > P. 26001:31001(5000) ack 1
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// Reset sysctls
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`/tmp/sysctl_restore_${PPID}.sh`
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