tools/testing/selftests/drivers/net/netdevsim/peer.sh

Source file repositories/reference/linux-study-clean/tools/testing/selftests/drivers/net/netdevsim/peer.sh

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/drivers/net/netdevsim/peer.sh
Extension
.sh
Size
4780 bytes
Lines
204
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-only

lib_dir=$(dirname $0)/../../../net
source $lib_dir/lib.sh

NSIM_DEV_1_ID=$((256 + RANDOM % 256))
NSIM_DEV_1_SYS=/sys/bus/netdevsim/devices/netdevsim$NSIM_DEV_1_ID
NSIM_DEV_2_ID=$((512 + RANDOM % 256))
NSIM_DEV_2_SYS=/sys/bus/netdevsim/devices/netdevsim$NSIM_DEV_2_ID

NSIM_DEV_SYS_NEW=/sys/bus/netdevsim/new_device
NSIM_DEV_SYS_DEL=/sys/bus/netdevsim/del_device
NSIM_DEV_SYS_LINK=/sys/bus/netdevsim/link_device
NSIM_DEV_SYS_UNLINK=/sys/bus/netdevsim/unlink_device

socat_check()
{
	if [ ! -x "$(command -v socat)" ]; then
		echo "socat command not found. Skipping test"
		return 1
	fi

	return 0
}

setup_ns()
{
	set -e
	ip netns add nssv
	ip netns add nscl

	NSIM_DEV_1_NAME=$(find $NSIM_DEV_1_SYS/net -maxdepth 1 -type d ! \
		-path $NSIM_DEV_1_SYS/net -exec basename {} \;)
	NSIM_DEV_2_NAME=$(find $NSIM_DEV_2_SYS/net -maxdepth 1 -type d ! \
		-path $NSIM_DEV_2_SYS/net -exec basename {} \;)

	ip link set $NSIM_DEV_1_NAME netns nssv
	ip link set $NSIM_DEV_2_NAME netns nscl

	ip netns exec nssv ip addr add '192.168.1.1/24' dev $NSIM_DEV_1_NAME
	ip netns exec nscl ip addr add '192.168.1.2/24' dev $NSIM_DEV_2_NAME

	ip netns exec nssv ip link set dev $NSIM_DEV_1_NAME up
	ip netns exec nscl ip link set dev $NSIM_DEV_2_NAME up
	set +e
}

cleanup_ns()
{
	ip netns del nscl
	ip netns del nssv
}

is_carrier_up()
{
	local netns="$1"
	local nsim_dev="$2"

	test "$(ip netns exec "$netns"	\
		cat /sys/class/net/"$nsim_dev"/carrier 2>/dev/null)" -eq 1
}

assert_carrier_up()
{
	local netns="$1"
	local nsim_dev="$2"

	if ! is_carrier_up "$netns" "$nsim_dev"; then
		echo "$nsim_dev's carrier should be UP, but it isn't"

Annotation

Implementation Notes