tools/testing/selftests/net/forwarding/mirror_lib.sh

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

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/net/forwarding/mirror_lib.sh
Extension
.sh
Size
3807 bytes
Lines
181
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

# SPDX-License-Identifier: GPL-2.0

mirror_install()
{
	local from_dev=$1; shift
	local direction=$1; shift
	local to_dev=$1; shift
	local filter=$1; shift

	tc filter add dev $from_dev $direction \
	   pref 1000 $filter \
	   action mirred egress mirror dev $to_dev
}

mirror_uninstall()
{
	local from_dev=$1; shift
	local direction=$1; shift

	tc filter del dev $swp1 $direction pref 1000
}

is_ipv6()
{
	local addr=$1; shift

	[[ -z ${addr//[0-9a-fA-F:]/} ]]
}

mirror_test()
{
	local vrf_name=$1; shift
	local sip=$1; shift
	local dip=$1; shift
	local dev=$1; shift
	local pref=$1; shift
	local expect=$1; shift

	if is_ipv6 $dip; then
		local proto=-6
		local type="icmp6 type=128" # Echo request.
	else
		local proto=
		local type="icmp echoreq"
	fi

	if [[ -z ${expect//[[:digit:]]/} ]]; then
		expect="== $expect"
	fi

	local t0=$(tc_rule_stats_get $dev $pref)
	$MZ $proto $vrf_name ${sip:+-A $sip} -B $dip -a own -b bc -q \
	    -c 10 -d 100msec -t $type
	sleep 0.5
	local t1=$(tc_rule_stats_get $dev $pref)
	local delta=$((t1 - t0))
	((delta $expect))
	check_err $? "Expected to capture $expect packets, got $delta."
}

do_test_span_dir_ips()
{
	local expect=$1; shift
	local dev=$1; shift
	local ip1=$1; shift
	local ip2=$1; shift
	local forward_type=${1-8}; shift
	local backward_type=${1-0}; shift

	icmp_capture_install $dev "type $forward_type"

Annotation

Implementation Notes