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105 lines
3.2 KiB
105 lines
3.2 KiB
#!/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 ${basedir}/parameters.sh |
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# Using invalid DST_MAC will cause the packets to get dropped in |
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# ip_rcv() which is part of the test |
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if [ -z "$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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# Base Config |
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DELAY="0" # Zero means max speed |
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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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# 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 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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