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b939c074ef
Test how new passive flows react to ooo incoming packets. Their sk_rcvbuf can increase only after accept(). Signed-off-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20250707213900.1543248-3-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
54 lines
1.7 KiB
Plaintext
54 lines
1.7 KiB
Plaintext
// SPDX-License-Identifier: GPL-2.0
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--mss=1000
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`./defaults.sh
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sysctl -q net.ipv4.tcp_rmem="4096 131072 $((32*1024*1024))"`
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// Test that a not-yet-accepted socket does not change
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// its initial sk_rcvbuf (tcp_rmem[1]) when receiving ooo packets.
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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,nop,nop,sackOK,nop,wscale 7>
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+0 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 10>
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+.1 < . 1:1(0) ack 1 win 257
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+0 < . 2001:41001(39000) ack 1 win 257
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+0 > . 1:1(0) ack 1 <nop,nop,sack 2001:41001>
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+0 < . 41001:101001(60000) ack 1 win 257
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+0 > . 1:1(0) ack 1 <nop,nop,sack 2001:101001>
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+0 < . 1:1001(1000) ack 1 win 257
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+0 > . 1:1(0) ack 1001 <nop,nop,sack 2001:101001>
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+0 < . 1001:2001(1000) ack 1 win 257
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+0 > . 1:1(0) ack 101001
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+0 accept(3, ..., ...) = 4
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+0 %{ assert SK_MEMINFO_RCVBUF == 131072, SK_MEMINFO_RCVBUF }%
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+0 close(4) = 0
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+0 close(3) = 0
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// Test that ooo packets for accepted sockets do increase sk_rcvbuf
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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,nop,nop,sackOK,nop,wscale 7>
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+0 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 10>
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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 < . 2001:41001(39000) ack 1 win 257
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+0 > . 1:1(0) ack 1 <nop,nop,sack 2001:41001>
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+0 < . 41001:101001(60000) ack 1 win 257
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+0 > . 1:1(0) ack 1 <nop,nop,sack 2001:101001>
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+0 %{ assert SK_MEMINFO_RCVBUF > 131072, SK_MEMINFO_RCVBUF }%
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