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1#!/bin/bash
2#
3# Multiqueue: Using pktgen threads for sending on multiple CPUs
4# * adding devices to kernel threads which are in the same NUMA node
5# * bound devices queue's irq affinity to the threads, 1:1 mapping
6# * notice the naming scheme for keeping device names unique
7# * nameing scheme: dev@thread_number
8# * flow variation via random UDP source port
9#
10basedir=`dirname $0`
11source ${basedir}/functions.sh
12root_check_run_with_sudo "$@"
13#
14# Required param: -i dev in $DEV
15source ${basedir}/parameters.sh
16
17# Trap EXIT first
18trap_exit
19
20# Base Config
21[ -z "$COUNT" ] && COUNT="20000000" # Zero means indefinitely
22[ -z "$CLONE_SKB" ] && CLONE_SKB="0"
23
24# Flow variation random source port between min and max
25UDP_SRC_MIN=9
26UDP_SRC_MAX=109
27
28node=`get_iface_node $DEV`
29irq_array=(`get_iface_irqs $DEV`)
30cpu_array=(`get_node_cpus $node`)
31
32[ $THREADS -gt ${#irq_array[*]} -o $THREADS -gt ${#cpu_array[*]} ] && \
33 err 1 "Thread number $THREADS exceeds: min (${#irq_array[*]},${#cpu_array[*]})"
34
35# (example of setting default params in your script)
36if [ -z "$DEST_IP" ]; then
37 [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
38fi
39[ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
40if [ -n "$DEST_IP" ]; then
41 validate_addr${IP6} $DEST_IP
42 read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
43fi
44if [ -n "$DST_PORT" ]; then
45 read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
46 validate_ports $UDP_DST_MIN $UDP_DST_MAX
47fi
48
49# General cleanup everything since last run
50[ -z "$APPEND" ] && pg_ctrl "reset"
51
52# Threads are specified with parameter -t value in $THREADS
53for ((i = 0; i < $THREADS; i++)); do
54 # The device name is extended with @name, using thread number to
55 # make then unique, but any name will do.
56 # Set the queue's irq affinity to this $thread (processor)
57 # if '-f' is designated, offset cpu id
58 thread=${cpu_array[$((i+F_THREAD))]}
59 dev=${DEV}@${thread}
60 echo $thread > /proc/irq/${irq_array[$i]}/smp_affinity_list
61 info "irq ${irq_array[$i]} is set affinity to `cat /proc/irq/${irq_array[$i]}/smp_affinity_list`"
62
63 # Add remove all other devices and add_device $dev to thread
64 [ -z "$APPEND" ] && pg_thread $thread "rem_device_all"
65 pg_thread $thread "add_device" $dev
66
67 # select queue and bind the queue and $dev in 1:1 relationship
68 queue_num=$i
69 info "queue number is $queue_num"
70 pg_set $dev "queue_map_min $queue_num"
71 pg_set $dev "queue_map_max $queue_num"
72
73 # Notice config queue to map to cpu (mirrors smp_processor_id())
74 # It is beneficial to map IRQ /proc/irq/*/smp_affinity 1:1 to CPU number
75 pg_set $dev "flag QUEUE_MAP_CPU"
76
77 # Base config of dev
78 pg_set $dev "count $COUNT"
79 pg_set $dev "clone_skb $CLONE_SKB"
80 pg_set $dev "pkt_size $PKT_SIZE"
81 pg_set $dev "delay $DELAY"
82
83 # Flag example disabling timestamping
84 pg_set $dev "flag NO_TIMESTAMP"
85
86 # Destination
87 pg_set $dev "dst_mac $DST_MAC"
88 pg_set $dev "dst${IP6}_min $DST_MIN"
89 pg_set $dev "dst${IP6}_max $DST_MAX"
90
91 if [ -n "$DST_PORT" ]; then
92 # Single destination port or random port range
93 pg_set $dev "flag UDPDST_RND"
94 pg_set $dev "udp_dst_min $UDP_DST_MIN"
95 pg_set $dev "udp_dst_max $UDP_DST_MAX"
96 fi
97
98 [ ! -z "$UDP_CSUM" ] && pg_set $dev "flag UDPCSUM"
99
100 # Setup random UDP port src range
101 pg_set $dev "flag UDPSRC_RND"
102 pg_set $dev "udp_src_min $UDP_SRC_MIN"
103 pg_set $dev "udp_src_max $UDP_SRC_MAX"
104done
105
106# Run if user hits control-c
107function print_result() {
108 # Print results
109 for ((i = 0; i < $THREADS; i++)); do
110 thread=${cpu_array[$((i+F_THREAD))]}
111 dev=${DEV}@${thread}
112 echo "Device: $dev"
113 cat /proc/net/pktgen/$dev | grep -A2 "Result:"
114 done
115}
116# trap keyboard interrupt (Ctrl-C)
117trap true SIGINT
118
119# start_run
120if [ -z "$APPEND" ]; then
121 echo "Running... ctrl^C to stop" >&2
122 pg_ctrl "start"
123 echo "Done" >&2
124
125 print_result
126else
127 echo "Append mode: config done. Do more or use 'pg_ctrl start' to run"
128fi
1#!/bin/bash
2#
3# Multiqueue: Using pktgen threads for sending on multiple CPUs
4# * adding devices to kernel threads which are in the same NUMA node
5# * bound devices queue's irq affinity to the threads, 1:1 mapping
6# * notice the naming scheme for keeping device names unique
7# * nameing scheme: dev@thread_number
8# * flow variation via random UDP source port
9#
10basedir=`dirname $0`
11source ${basedir}/functions.sh
12root_check_run_with_sudo "$@"
13#
14# Required param: -i dev in $DEV
15source ${basedir}/parameters.sh
16
17# Base Config
18DELAY="0" # Zero means max speed
19[ -z "$COUNT" ] && COUNT="20000000" # Zero means indefinitely
20[ -z "$CLONE_SKB" ] && CLONE_SKB="0"
21
22# Flow variation random source port between min and max
23UDP_MIN=9
24UDP_MAX=109
25
26node=`get_iface_node $DEV`
27irq_array=(`get_iface_irqs $DEV`)
28cpu_array=(`get_node_cpus $node`)
29
30[ $THREADS -gt ${#irq_array[*]} -o $THREADS -gt ${#cpu_array[*]} ] && \
31 err 1 "Thread number $THREADS exceeds: min (${#irq_array[*]},${#cpu_array[*]})"
32
33# (example of setting default params in your script)
34if [ -z "$DEST_IP" ]; then
35 [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
36fi
37[ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
38if [ -n "$DST_PORT" ]; then
39 read -r DST_MIN DST_MAX <<< $(parse_ports $DST_PORT)
40 validate_ports $DST_MIN $DST_MAX
41fi
42
43# General cleanup everything since last run
44pg_ctrl "reset"
45
46# Threads are specified with parameter -t value in $THREADS
47for ((i = 0; i < $THREADS; i++)); do
48 # The device name is extended with @name, using thread number to
49 # make then unique, but any name will do.
50 # Set the queue's irq affinity to this $thread (processor)
51 # if '-f' is designated, offset cpu id
52 thread=${cpu_array[$((i+F_THREAD))]}
53 dev=${DEV}@${thread}
54 echo $thread > /proc/irq/${irq_array[$i]}/smp_affinity_list
55 info "irq ${irq_array[$i]} is set affinity to `cat /proc/irq/${irq_array[$i]}/smp_affinity_list`"
56
57 # Add remove all other devices and add_device $dev to thread
58 pg_thread $thread "rem_device_all"
59 pg_thread $thread "add_device" $dev
60
61 # select queue and bind the queue and $dev in 1:1 relationship
62 queue_num=$i
63 info "queue number is $queue_num"
64 pg_set $dev "queue_map_min $queue_num"
65 pg_set $dev "queue_map_max $queue_num"
66
67 # Notice config queue to map to cpu (mirrors smp_processor_id())
68 # It is beneficial to map IRQ /proc/irq/*/smp_affinity 1:1 to CPU number
69 pg_set $dev "flag QUEUE_MAP_CPU"
70
71 # Base config of dev
72 pg_set $dev "count $COUNT"
73 pg_set $dev "clone_skb $CLONE_SKB"
74 pg_set $dev "pkt_size $PKT_SIZE"
75 pg_set $dev "delay $DELAY"
76
77 # Flag example disabling timestamping
78 pg_set $dev "flag NO_TIMESTAMP"
79
80 # Destination
81 pg_set $dev "dst_mac $DST_MAC"
82 pg_set $dev "dst$IP6 $DEST_IP"
83
84 if [ -n "$DST_PORT" ]; then
85 # Single destination port or random port range
86 pg_set $dev "flag UDPDST_RND"
87 pg_set $dev "udp_dst_min $DST_MIN"
88 pg_set $dev "udp_dst_max $DST_MAX"
89 fi
90
91 # Setup random UDP port src range
92 pg_set $dev "flag UDPSRC_RND"
93 pg_set $dev "udp_src_min $UDP_MIN"
94 pg_set $dev "udp_src_max $UDP_MAX"
95done
96
97# start_run
98echo "Running... ctrl^C to stop" >&2
99pg_ctrl "start"
100echo "Done" >&2
101
102# Print results
103for ((i = 0; i < $THREADS; i++)); do
104 thread=${cpu_array[$((i+F_THREAD))]}
105 dev=${DEV}@${thread}
106 echo "Device: $dev"
107 cat /proc/net/pktgen/$dev | grep -A2 "Result:"
108done