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8a405552fd
Lay the groundwork to import into kselftests the over 150 packetdrill
TCP/IP conformance tests on github.com/google/packetdrill.
Florian recently added support for packetdrill tests in nf_conntrack,
in commit a8a388c2aa ("selftests: netfilter: add packetdrill based
conntrack tests").
This patch takes a slightly different approach. It relies on
ksft_runner.sh to run every *.pkt file in the directory.
Any future imports of packetdrill tests should require no additional
coding. Just add the *.pkt files.
Initially import only two features/directories from github. One with a
single script, and one with two. This was the only reason to pick
tcp/inq and tcp/md5.
The path replaces the directory hierarchy in github with a flat space
of files: $(subst /,_,$(wildcard tcp/**/*.pkt)). This is the most
straightforward option to integrate with kselftests. The Linked thread
reviewed two ways to maintain the hierarchy: TEST_PROGS_RECURSE and
PRESERVE_TEST_DIRS. But both introduce significant changes to
kselftest infra and with that risk to existing tests.
Implementation notes:
- restore alphabetical order when adding the new directory to
tools/testing/selftests/Makefile
- imported *.pkt files and support verbatim from the github project,
except for
- update `source ./defaults.sh` path (to adjust for flat dir)
- add SPDX headers
- remove one author statement
- Acknowledgment: drop an e (checkpatch)
Tested:
make -C tools/testing/selftests \
TARGETS=net/packetdrill \
run_tests
make -C tools/testing/selftests \
TARGETS=net/packetdrill \
install INSTALL_PATH=$KSFT_INSTALL_PATH
# in virtme-ng
./run_kselftest.sh -c net/packetdrill
./run_kselftest.sh -t net/packetdrill:tcp_inq_client.pkt
Link: https://lore.kernel.org/netdev/20240827193417.2792223-1-willemdebruijn.kernel@gmail.com/
Signed-off-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20240905231653.2427327-3-willemdebruijn.kernel@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
64 lines
1.8 KiB
Bash
Executable File
64 lines
1.8 KiB
Bash
Executable File
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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#
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# Set standard production config values that relate to TCP behavior.
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# Flush old cached data (fastopen cookies).
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ip tcp_metrics flush all > /dev/null 2>&1
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# TCP min, default, and max receive and send buffer sizes.
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sysctl -q net.ipv4.tcp_rmem="4096 540000 $((15*1024*1024))"
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sysctl -q net.ipv4.tcp_wmem="4096 $((256*1024)) 4194304"
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# TCP timestamps.
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sysctl -q net.ipv4.tcp_timestamps=1
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# TCP SYN(ACK) retry thresholds
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sysctl -q net.ipv4.tcp_syn_retries=5
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sysctl -q net.ipv4.tcp_synack_retries=5
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# TCP Forward RTO-Recovery, RFC 5682.
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sysctl -q net.ipv4.tcp_frto=2
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# TCP Selective Acknowledgements (SACK)
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sysctl -q net.ipv4.tcp_sack=1
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# TCP Duplicate Selective Acknowledgements (DSACK)
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sysctl -q net.ipv4.tcp_dsack=1
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# TCP FACK (Forward Acknowldgement)
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sysctl -q net.ipv4.tcp_fack=0
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# TCP reordering degree ("dupthresh" threshold for entering Fast Recovery).
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sysctl -q net.ipv4.tcp_reordering=3
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# TCP congestion control.
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sysctl -q net.ipv4.tcp_congestion_control=cubic
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# TCP slow start after idle.
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sysctl -q net.ipv4.tcp_slow_start_after_idle=0
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# TCP RACK and TLP.
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sysctl -q net.ipv4.tcp_early_retrans=4 net.ipv4.tcp_recovery=1
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# TCP method for deciding when to defer sending to accumulate big TSO packets.
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sysctl -q net.ipv4.tcp_tso_win_divisor=3
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# TCP Explicit Congestion Notification (ECN)
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sysctl -q net.ipv4.tcp_ecn=0
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sysctl -q net.ipv4.tcp_pacing_ss_ratio=200
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sysctl -q net.ipv4.tcp_pacing_ca_ratio=120
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sysctl -q net.ipv4.tcp_notsent_lowat=4294967295 > /dev/null 2>&1
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sysctl -q net.ipv4.tcp_fastopen=0x70403
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sysctl -q net.ipv4.tcp_fastopen_key=a1a1a1a1-b2b2b2b2-c3c3c3c3-d4d4d4d4
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sysctl -q net.ipv4.tcp_syncookies=1
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# Override the default qdisc on the tun device.
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# Many tests fail with timing errors if the default
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# is FQ and that paces their flows.
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tc qdisc add dev tun0 root pfifo
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