tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2// Test that we correctly skip zero-length IOVs.
3`./defaults.sh`
4 0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3
5 +0 setsockopt(3, SOL_SOCKET, SO_ZEROCOPY, [1], 4) = 0
6 +0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
7 +0 bind(3, ..., ...) = 0
8 +0 listen(3, 1) = 0
9
10 +0 < S 0:0(0) win 32792 <mss 1000,nop,wscale 7>
11 +0 > S. 0:0(0) ack 1 <mss 1460,nop,wscale 8>
12 +.01 < . 1:1(0) ack 1 win 257
13 +0 accept(3, ..., ...) = 4
14 +0 setsockopt(4, SOL_TCP, TCP_NODELAY, [1], 4) = 0
15
16 +0 sendmsg(4, {msg_name(...)=...,
17 msg_iov(4)=[{..., 0}, {..., 40}, {..., 0}, {..., 20}],
18 msg_flags=0}, 0) = 60
19 +0 > P. 1:61(60) ack 1
20 +.01 < . 1:1(0) ack 61 win 257
21
22 +0 sendmsg(4, {msg_name(...)=...,
23 msg_iov(4)=[{..., 0}, {..., 0}, {..., 0}, {..., 0}],
24 msg_flags=0}, MSG_ZEROCOPY) = 0
25
26 +0 sendmsg(4, {msg_name(...)=...,
27 msg_iov(4)=[{..., 0}, {..., 10}, {..., 0}, {..., 50}],
28 msg_flags=0}, MSG_ZEROCOPY) = 60
29 +0 > P. 61:121(60) ack 1
30 +.01 < . 1:1(0) ack 121 win 257