Commit | Line | Data |
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05a14d5e | 1 | #!/bin/bash |
b2441318 | 2 | # SPDX-License-Identifier: GPL-2.0 |
05a14d5e JDB |
3 | # |
4 | # Benchmark script: | |
5 | # - developed for benchmarking ingress qdisc path | |
6 | # | |
7 | # Script for injecting packets into RX path of the stack with pktgen | |
8 | # "xmit_mode netif_receive". With an invalid dst_mac this will only | |
9 | # measure the ingress code path as packets gets dropped in ip_rcv(). | |
10 | # | |
11 | # This script don't really need any hardware. It benchmarks software | |
12 | # RX path just after NIC driver level. With bursting is also | |
13 | # "removes" the SKB alloc/free overhead. | |
14 | # | |
15 | # Setup scenarios for measuring ingress qdisc (with invalid dst_mac): | |
16 | # ------------------------------------------------------------------ | |
17 | # (1) no ingress (uses static_key_false(&ingress_needed)) | |
18 | # | |
19 | # (2) ingress on other dev (change ingress_needed and calls | |
20 | # handle_ing() but exit early) | |
21 | # | |
22 | # config: tc qdisc add dev $SOMEDEV handle ffff: ingress | |
23 | # | |
24 | # (3) ingress on this dev, handle_ing() -> tc_classify() | |
25 | # | |
26 | # config: tc qdisc add dev $DEV handle ffff: ingress | |
27 | # | |
28 | # (4) ingress on this dev + drop at u32 classifier/action. | |
29 | # | |
30 | basedir=`dirname $0` | |
31 | source ${basedir}/functions.sh | |
32 | root_check_run_with_sudo "$@" | |
33 | ||
34 | # Parameter parsing via include | |
35 | source ${basedir}/parameters.sh | |
36 | # Using invalid DST_MAC will cause the packets to get dropped in | |
37 | # ip_rcv() which is part of the test | |
0f06a678 MKL |
38 | if [ -z "$DEST_IP" ]; then |
39 | [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1" | |
40 | fi | |
05a14d5e JDB |
41 | [ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff" |
42 | [ -z "$BURST" ] && BURST=1024 | |
69137ea6 | 43 | [ -z "$COUNT" ] && COUNT="10000000" # Zero means indefinitely |
40f843ee DL |
44 | if [ -n "$DEST_IP" ]; then |
45 | validate_addr${IP6} $DEST_IP | |
46 | read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP) | |
47 | fi | |
6e32a74a | 48 | if [ -n "$DST_PORT" ]; then |
723d2904 DL |
49 | read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT) |
50 | validate_ports $UDP_DST_MIN $UDP_DST_MAX | |
6e32a74a | 51 | fi |
05a14d5e JDB |
52 | |
53 | # Base Config | |
54 | DELAY="0" # Zero means max speed | |
05a14d5e JDB |
55 | |
56 | # General cleanup everything since last run | |
57 | pg_ctrl "reset" | |
58 | ||
59 | # Threads are specified with parameter -t value in $THREADS | |
e0e16672 | 60 | for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do |
05a14d5e JDB |
61 | # The device name is extended with @name, using thread number to |
62 | # make then unique, but any name will do. | |
63 | dev=${DEV}@${thread} | |
64 | ||
65 | # Add remove all other devices and add_device $dev to thread | |
66 | pg_thread $thread "rem_device_all" | |
67 | pg_thread $thread "add_device" $dev | |
68 | ||
69 | # Base config of dev | |
70 | pg_set $dev "flag QUEUE_MAP_CPU" | |
71 | pg_set $dev "count $COUNT" | |
72 | pg_set $dev "pkt_size $PKT_SIZE" | |
73 | pg_set $dev "delay $DELAY" | |
74 | pg_set $dev "flag NO_TIMESTAMP" | |
75 | ||
76 | # Destination | |
77 | pg_set $dev "dst_mac $DST_MAC" | |
40f843ee DL |
78 | pg_set $dev "dst${IP6}_min $DST_MIN" |
79 | pg_set $dev "dst${IP6}_max $DST_MAX" | |
05a14d5e | 80 | |
6e32a74a DL |
81 | if [ -n "$DST_PORT" ]; then |
82 | # Single destination port or random port range | |
83 | pg_set $dev "flag UDPDST_RND" | |
723d2904 DL |
84 | pg_set $dev "udp_dst_min $UDP_DST_MIN" |
85 | pg_set $dev "udp_dst_max $UDP_DST_MAX" | |
6e32a74a DL |
86 | fi |
87 | ||
05a14d5e JDB |
88 | # Inject packet into RX path of stack |
89 | pg_set $dev "xmit_mode netif_receive" | |
90 | ||
91 | # Burst allow us to avoid measuring SKB alloc/free overhead | |
92 | pg_set $dev "burst $BURST" | |
93 | done | |
94 | ||
95 | # start_run | |
96 | echo "Running... ctrl^C to stop" >&2 | |
97 | pg_ctrl "start" | |
98 | echo "Done" >&2 | |
99 | ||
100 | # Print results | |
e0e16672 | 101 | for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do |
05a14d5e JDB |
102 | dev=${DEV}@${thread} |
103 | echo "Device: $dev" | |
104 | cat /proc/net/pktgen/$dev | grep -A2 "Result:" | |
105 | done |