tools/testing/selftests/net/udpgro_bench.sh

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

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/net/udpgro_bench.sh
Extension
.sh
Size
2124 bytes
Lines
99
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 udpgro benchmarks

source lib.sh

readonly PEER_NS="ns-peer-$(mktemp -u XXXXXX)"

BPF_FILE="lib/xdp_dummy.bpf.o"

cleanup() {
	local -r jobs="$(jobs -p)"
	local -r ns="$(ip netns list|grep $PEER_NS)"

	[ -n "${jobs}" ] && kill -INT ${jobs} 2>/dev/null
	[ -n "$ns" ] && ip netns del $ns 2>/dev/null
}
trap cleanup EXIT

run_one() {
	# use 'rx' as separator between sender args and receiver args
	local -r all="$@"
	local -r tx_args=${all%rx*}
	local rx_args=${all#*rx}

	[[ "${tx_args}" == *"-4"* ]] && rx_args="${rx_args} -4"

	ip netns add "${PEER_NS}"
	ip -netns "${PEER_NS}" link set lo up
	ip link add type veth
	ip link set dev veth0 up
	ip addr add dev veth0 192.168.1.2/24
	ip addr add dev veth0 2001:db8::2/64 nodad

	ip link set dev veth1 netns "${PEER_NS}"
	ip -netns "${PEER_NS}" addr add dev veth1 192.168.1.1/24
	ip -netns "${PEER_NS}" addr add dev veth1 2001:db8::1/64 nodad
	ip -netns "${PEER_NS}" link set dev veth1 up

	ip -n "${PEER_NS}" link set veth1 xdp object ${BPF_FILE} section xdp
	ip netns exec "${PEER_NS}" ./udpgso_bench_rx ${rx_args} -r &
	ip netns exec "${PEER_NS}" ./udpgso_bench_rx -t ${rx_args} -r &

	wait_local_port_listen "${PEER_NS}" 8000 udp
	./udpgso_bench_tx ${tx_args}
}

run_in_netns() {
	local -r args=$@

	./in_netns.sh $0 __subprocess ${args}
}

run_udp() {
	local -r args=$@

	echo "udp gso - over veth touching data"
	run_in_netns ${args} -S 0 rx

	echo "udp gso and gro - over veth touching data"
	run_in_netns ${args} -S 0 rx -G
}

run_tcp() {
	local -r args=$@

	echo "tcp - over veth touching data"
	run_in_netns ${args} -t rx
}

Annotation

Implementation Notes