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88395c071f
Same as initial tests, import verbatim from github.com/google/packetdrill, aside from: - update `source ./defaults.sh` path to adjust for flat dir - add SPDX headers - remove author statements if any - drop blank lines at EOF 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 Signed-off-by: Willem de Bruijn <willemb@google.com> Signed-off-by: Soham Chakradeo <sohamch@google.com> Link: https://patch.msgid.link/20241217185203.297935-2-sohamch.kernel@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
37 lines
1.0 KiB
Plaintext
37 lines
1.0 KiB
Plaintext
// SPDX-License-Identifier: GPL-2.0
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// Verify behavior for the sequence: remote side sends FIN, then we close().
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// Since the remote side (client) closes first, we test our LAST_ACK code path.
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`./defaults.sh`
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// Initialize a server socket.
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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 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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+0 < . 1:1(0) ack 1 win 257
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+0 accept(3, ..., ...) = 4
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// Client closes first.
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+.01 < F. 1:1(0) ack 1 win 257
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+0 > . 1:1(0) ack 2
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// App notices that client closed.
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+0 read(4, ..., 1000) = 0
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// Then we close.
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+.01 close(4) = 0
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+0 > F. 1:1(0) ack 2
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// Client ACKs our FIN.
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+.01 < . 2:2(0) ack 2 win 257
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// Verify that we send RST in response to any incoming segments
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// (because the kernel no longer has any record of this socket).
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+.01 < . 2:2(0) ack 2 win 257
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+0 > R 2:2(0)
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