1 #!/bin/bash
2 # SPDX-License-Identifier: GPL-2.0
3 #
4 # Benchmark script:
5 # - developed for benchmarking egress qdisc path, derived (more
6 # like cut'n'pasted) from ingress benchmark script.
7 #
8 # Script for injecting packets into egress qdisc path of the stack
9 # with pktgen "xmit_mode queue_xmit".
10 #
11 basedir=`dirname $0`
12 source ${basedir}/functions.sh
13 root_check_run_with_sudo "$@"
14
15 # Parameter parsing via include
16 source ${basedir}/parameters.sh
17
18 # Trap EXIT first
19 trap_exit
20
21 if [ -z "$DEST_IP" ]; then
22 [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
23 fi
24 [ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
25
26 # Burst greater than 1 are invalid for queue_xmit mode
27 if [[ -n "$BURST" ]]; then
28 err 1 "Bursting not supported for this mode"
29 fi
30 [ -z "$COUNT" ] && COUNT="10000000" # Zero means indefinitely
31 if [ -n "$DEST_IP" ]; then
32 validate_addr${IP6} $DEST_IP
33 read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
34 fi
35 if [ -n "$DST_PORT" ]; then
36 read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
37 validate_ports $UDP_DST_MIN $UDP_DST_MAX
38 fi
39
40 # General cleanup everything since last run
41 pg_ctrl "reset"
42
43 # Threads are specified with parameter -t value in $THREADS
44 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
45 # The device name is extended with @name, using thread number to
46 # make then unique, but any name will do.
47 dev=${DEV}@${thread}
48
49 # Add remove all other devices and add_device $dev to thread
50 pg_thread $thread "rem_device_all"
51 pg_thread $thread "add_device" $dev
52
53 # Base config of dev
54 pg_set $dev "flag QUEUE_MAP_CPU"
55 pg_set $dev "count $COUNT"
56 pg_set $dev "pkt_size $PKT_SIZE"
57 pg_set $dev "delay $DELAY"
58 pg_set $dev "flag NO_TIMESTAMP"
59
60 # Destination
61 pg_set $dev "dst_mac $DST_MAC"
62 pg_set $dev "dst${IP6}_min $DST_MIN"
63 pg_set $dev "dst${IP6}_max $DST_MAX"
64
65 if [ -n "$DST_PORT" ]; then
66 # Single destination port or random port range
67 pg_set $dev "flag UDPDST_RND"
68 pg_set $dev "udp_dst_min $UDP_DST_MIN"
69 pg_set $dev "udp_dst_max $UDP_DST_MAX"
70 fi
71
72 # Inject packet into TX qdisc egress path of stack
73 pg_set $dev "xmit_mode queue_xmit"
74 done
75
76 # Run if user hits control-c
77 function print_result {
78 # Print results
79 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
80 dev=${DEV}@${thread}
81 echo "Device: $dev"
82 cat /proc/net/pktgen/$dev | grep -A2 "Result:"
83 done
84 }
85 # trap keyboard interrupt (Ctrl-C)
86 trap true SIGINT
87
88 # start_run
89 echo "Running... ctrl^C to stop" >&2
90 pg_ctrl "start"
91 echo "Done" >&2
92
93 print_result
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