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https://github.com/torvalds/linux
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a27ac53909
Each sample script sources functions.sh before parameters.sh which makes $APPEND undefined when trapping EXIT no matter in append mode or not. Due to this when sample scripts finished they always do "pgctrl reset" which resets pktgen config. So move trap to each script after sourcing parameters.sh and trap EXIT explicitly. Signed-off-by: J.J. Martzki <mars14850@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
114 lines
3.3 KiB
Bash
Executable File
114 lines
3.3 KiB
Bash
Executable File
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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#
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# Benchmark script:
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# - developed for benchmarking ingress qdisc path
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#
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# Script for injecting packets into RX path of the stack with pktgen
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# "xmit_mode netif_receive". With an invalid dst_mac this will only
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# measure the ingress code path as packets gets dropped in ip_rcv().
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#
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# This script don't really need any hardware. It benchmarks software
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# RX path just after NIC driver level. With bursting is also
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# "removes" the SKB alloc/free overhead.
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#
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# Setup scenarios for measuring ingress qdisc (with invalid dst_mac):
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# ------------------------------------------------------------------
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# (1) no ingress (uses static_key_false(&ingress_needed))
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#
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# (2) ingress on other dev (change ingress_needed and calls
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# handle_ing() but exit early)
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#
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# config: tc qdisc add dev $SOMEDEV handle ffff: ingress
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#
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# (3) ingress on this dev, handle_ing() -> tc_classify()
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#
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# config: tc qdisc add dev $DEV handle ffff: ingress
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#
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# (4) ingress on this dev + drop at u32 classifier/action.
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#
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basedir=`dirname $0`
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source ${basedir}/functions.sh
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root_check_run_with_sudo "$@"
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# Parameter parsing via include
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source ${basedir}/parameters.sh
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# Trap EXIT first
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trap_exit
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# Using invalid DST_MAC will cause the packets to get dropped in
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# ip_rcv() which is part of the test
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if [ -z "$DEST_IP" ]; then
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[ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
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fi
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[ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
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[ -z "$BURST" ] && BURST=1024
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[ -z "$COUNT" ] && COUNT="10000000" # Zero means indefinitely
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if [ -n "$DEST_IP" ]; then
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validate_addr${IP6} $DEST_IP
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read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
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fi
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if [ -n "$DST_PORT" ]; then
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read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
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validate_ports $UDP_DST_MIN $UDP_DST_MAX
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fi
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# General cleanup everything since last run
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pg_ctrl "reset"
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# Threads are specified with parameter -t value in $THREADS
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for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
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# The device name is extended with @name, using thread number to
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# make then unique, but any name will do.
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dev=${DEV}@${thread}
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# Add remove all other devices and add_device $dev to thread
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pg_thread $thread "rem_device_all"
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pg_thread $thread "add_device" $dev
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# Base config of dev
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pg_set $dev "flag QUEUE_MAP_CPU"
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pg_set $dev "count $COUNT"
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pg_set $dev "pkt_size $PKT_SIZE"
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pg_set $dev "delay $DELAY"
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pg_set $dev "flag NO_TIMESTAMP"
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# Destination
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pg_set $dev "dst_mac $DST_MAC"
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pg_set $dev "dst${IP6}_min $DST_MIN"
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pg_set $dev "dst${IP6}_max $DST_MAX"
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if [ -n "$DST_PORT" ]; then
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# Single destination port or random port range
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pg_set $dev "flag UDPDST_RND"
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pg_set $dev "udp_dst_min $UDP_DST_MIN"
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pg_set $dev "udp_dst_max $UDP_DST_MAX"
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fi
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# Inject packet into RX path of stack
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pg_set $dev "xmit_mode netif_receive"
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# Burst allow us to avoid measuring SKB alloc/free overhead
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pg_set $dev "burst $BURST"
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done
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# Run if user hits control-c
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function print_result() {
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# Print results
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for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
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dev=${DEV}@${thread}
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echo "Device: $dev"
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cat /proc/net/pktgen/$dev | grep -A2 "Result:"
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done
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}
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# trap keyboard interrupt (Ctrl-C)
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trap true SIGINT
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# start_run
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echo "Running... ctrl^C to stop" >&2
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pg_ctrl "start"
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echo "Done" >&2
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print_result
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