1 #!/bin/bash
2 # SPDX-License-Identifier: GPL-2.0
3 #
4 # Script example for many flows testing
5 #
6 # Number of simultaneous flows limited by variable $FLOWS
7 # and number of packets per flow controlled by variable $FLOWLEN
8 #
9 basedir=`dirname $0`
10 source ${basedir}/functions.sh
11 root_check_run_with_sudo "$@"
12
13 # Parameter parsing via include
14 source ${basedir}/parameters.sh
15
16 # Trap EXIT first
17 trap_exit
18
19 # Set some default params, if they didn't get set
20 if [ -z "$DEST_IP" ]; then
21 [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
22 fi
23 [ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
24 [ -z "$CLONE_SKB" ] && CLONE_SKB="0"
25 [ -z "$COUNT" ] && COUNT="0" # Zero means indefinitely
26 if [ -n "$DEST_IP" ]; then
27 validate_addr${IP6} $DEST_IP
28 read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
29 fi
30 if [ -n "$DST_PORT" ]; then
31 read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
32 validate_ports $UDP_DST_MIN $UDP_DST_MAX
33 fi
34
35 # NOTICE: Script specific settings
36 # =======
37 # Limiting the number of concurrent flows ($FLOWS)
38 # and also set how many packets each flow contains ($FLOWLEN)
39 #
40 [ -z "$FLOWS" ] && FLOWS="8000"
41 [ -z "$FLOWLEN" ] && FLOWLEN="10"
42
43 if [[ -n "$BURST" ]]; then
44 err 1 "Bursting not supported for this mode"
45 fi
46
47 # 198.18.0.0 / 198.19.255.255
48 read -r SRC_MIN SRC_MAX <<< $(parse_addr 198.18.0.0/15)
49
50 # General cleanup everything since last run
51 [ -z "$APPEND" ] && pg_ctrl "reset"
52
53 # Threads are specified with parameter -t value in $THREADS
54 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
55 dev=${DEV}@${thread}
56
57 # Add remove all other devices and add_device $dev to thread
58 [ -z "$APPEND" ] && pg_thread $thread "rem_device_all"
59 pg_thread $thread "add_device" $dev
60
61 # Base config
62 pg_set $dev "flag QUEUE_MAP_CPU"
63 pg_set $dev "count $COUNT"
64 pg_set $dev "clone_skb $CLONE_SKB"
65 pg_set $dev "pkt_size $PKT_SIZE"
66 pg_set $dev "delay $DELAY"
67 pg_set $dev "flag NO_TIMESTAMP"
68
69 # Single destination
70 pg_set $dev "dst_mac $DST_MAC"
71 pg_set $dev "dst${IP6}_min $DST_MIN"
72 pg_set $dev "dst${IP6}_max $DST_MAX"
73
74 if [ -n "$DST_PORT" ]; then
75 # Single destination port or random port range
76 pg_set $dev "flag UDPDST_RND"
77 pg_set $dev "udp_dst_min $UDP_DST_MIN"
78 pg_set $dev "udp_dst_max $UDP_DST_MAX"
79 fi
80
81 [ ! -z "$UDP_CSUM" ] && pg_set $dev "flag UDPCSUM"
82
83 # Randomize source IP-addresses
84 pg_set $dev "flag IPSRC_RND"
85 pg_set $dev "src_min $SRC_MIN"
86 pg_set $dev "src_max $SRC_MAX"
87
88 # Limit number of flows (max 65535)
89 pg_set $dev "flows $FLOWS"
90 #
91 # How many packets a flow will send, before flow "entry" is
92 # re-generated/setup.
93 pg_set $dev "flowlen $FLOWLEN"
94 #
95 # Flag FLOW_SEQ will cause $FLOWLEN packets from the same flow
96 # being send back-to-back, before next flow is selected
97 # incrementally. This helps lookup caches, and is more realistic.
98 #
99 pg_set $dev "flag FLOW_SEQ"
100
101 done
102
103 # Run if user hits control-c
104 function print_result() {
105 # Print results
106 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
107 dev=${DEV}@${thread}
108 echo "Device: $dev"
109 cat /proc/net/pktgen/$dev | grep -A2 "Result:"
110 done
111 }
112 # trap keyboard interrupt (Ctrl-C)
113 trap true SIGINT
114
115 if [ -z "$APPEND" ]; then
116 echo "Running... ctrl^C to stop" >&2
117 pg_ctrl "start"
118
119 print_result
120 else
121 echo "Append mode: config done. Do more or use 'pg_ctrl start' to run"
122 fi
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