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5d4cadef52
Use the standard import and testing method, as described in the import of tcp/ecn and tcp/close , tcp/sack , tcp/tcp_info. Signed-off-by: Willem de Bruijn <willemb@google.com> Signed-off-by: Soham Chakradeo <sohamch@google.com> Link: https://patch.msgid.link/20241217185203.297935-5-sohamch.kernel@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
25 lines
787 B
Plaintext
25 lines
787 B
Plaintext
// SPDX-License-Identifier: GPL-2.0
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// Verify that established connections drop a segment without the ACK flag set.
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`./defaults.sh`
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// Create a 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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// Establish a connection.
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+0 < S 0:0(0) win 20000 <mss 1000,sackOK,nop,nop>
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+0 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK>
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+.01 < . 1:1(0) ack 1 win 20000
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+0 accept(3, ..., ...) = 4
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// Receive a segment with no flags set, verify that it's not enqueued.
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+.01 < - 1:1001(1000) win 20000
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+0 ioctl(4, SIOCINQ, [0]) = 0
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// Receive a segment with ACK flag set, verify that it is enqueued.
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+.01 < . 1:1001(1000) ack 1 win 20000
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+0 ioctl(4, SIOCINQ, [1000]) = 0
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