tools/testing/selftests/net/psock_snd.sh

Source file repositories/reference/linux-study-clean/tools/testing/selftests/net/psock_snd.sh

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/net/psock_snd.sh
Extension
.sh
Size
2252 bytes
Lines
96
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: tools
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# Run a series of packet socket send regression tests

set -e

readonly mtu=1500
readonly iphlen=20
readonly udphlen=8

readonly vnet_hlen=10
readonly eth_hlen=14

readonly mss="$((${mtu} - ${iphlen} - ${udphlen}))"
readonly mss_exceeds="$((${mss} + 1))"

readonly max_mtu=65535
readonly max_mss="$((${max_mtu} - ${iphlen} - ${udphlen}))"
readonly max_mss_exceeds="$((${max_mss} + 1))"

# functional checks (not a full cross-product)

echo "dgram"
./in_netns.sh ./psock_snd -d

echo "dgram bind"
./in_netns.sh ./psock_snd -d -b

echo "raw"
./in_netns.sh ./psock_snd

echo "raw bind"
./in_netns.sh ./psock_snd -b

echo "raw qdisc bypass"
./in_netns.sh ./psock_snd -q

echo "raw vlan"
./in_netns.sh ./psock_snd -V

echo "raw vnet hdr"
./in_netns.sh ./psock_snd -v

echo "raw csum_off"
./in_netns.sh ./psock_snd -v -c

echo "raw csum_off with bad offset (expected to fail)"
(! ./in_netns.sh ./psock_snd -v -c -C)


# bounds check: send {max, max + 1, min, min - 1} lengths

echo "raw min size"
./in_netns.sh ./psock_snd -l 0

echo "raw mtu size"
./in_netns.sh ./psock_snd -l "${mss}"

echo "raw mtu size + 1 (expected to fail)"
(! ./in_netns.sh ./psock_snd -l "${mss_exceeds}")

# fails due to ARPHRD_ETHER check in packet_extra_vlan_len_allowed
#
# echo "raw vlan mtu size"
# ./in_netns.sh ./psock_snd -V -l "${mss}"

echo "raw vlan mtu size + 1 (expected to fail)"
(! ./in_netns.sh ./psock_snd -V -l "${mss_exceeds}")

Annotation

Implementation Notes