340 lines
8.6 KiB
Bash
340 lines
8.6 KiB
Bash
|
#
|
||
|
|
# Common functions used by pktgen scripts
|
||
|
|
# - Depending on bash 3 (or higher) syntax
|
||
|
|
#
|
||
|
|
# Author: Jesper Dangaaard Brouer
|
||
|
|
# License: GPL
|
||
|
|
|
||
|
|
set -o errexit
|
||
|
|
|
||
|
|
## -- General shell logging cmds --
|
||
|
|
function err() {
|
||
|
|
local exitcode=$1
|
||
|
|
shift
|
||
|
|
echo "ERROR: $@" >&2
|
||
|
|
exit $exitcode
|
||
|
|
}
|
||
|
|
|
||
|
|
function warn() {
|
||
|
|
echo "WARN : $@" >&2
|
||
|
|
}
|
||
|
|
|
||
|
|
function info() {
|
||
|
|
if [[ -n "$VERBOSE" ]]; then
|
||
|
|
echo "INFO : $@" >&2
|
||
|
|
fi
|
||
|
|
}
|
||
|
|
|
||
|
|
## -- Pktgen proc config commands -- ##
|
||
|
|
export PROC_DIR=/proc/net/pktgen
|
||
|
|
#
|
||
|
|
# Three different shell functions for configuring the different
|
||
|
|
# components of pktgen:
|
||
|
|
# pg_ctrl(), pg_thread() and pg_set().
|
||
|
|
#
|
||
|
|
# These functions correspond to pktgens different components.
|
||
|
|
# * pg_ctrl() control "pgctrl" (/proc/net/pktgen/pgctrl)
|
||
|
|
# * pg_thread() control the kernel threads and binding to devices
|
||
|
|
# * pg_set() control setup of individual devices
|
||
|
|
function pg_ctrl() {
|
||
|
|
local proc_file="pgctrl"
|
||
|
|
proc_cmd ${proc_file} "$@"
|
||
|
|
}
|
||
|
|
|
||
|
|
function pg_thread() {
|
||
|
|
local thread=$1
|
||
|
|
local proc_file="kpktgend_${thread}"
|
||
|
|
shift
|
||
|
|
proc_cmd ${proc_file} "$@"
|
||
|
|
}
|
||
|
|
|
||
|
|
function pg_set() {
|
||
|
|
local dev=$1
|
||
|
|
local proc_file="$dev"
|
||
|
|
shift
|
||
|
|
proc_cmd ${proc_file} "$@"
|
||
|
|
}
|
||
|
|
|
||
|
|
# More generic replacement for pgset(), that does not depend on global
|
||
|
|
# variable for proc file.
|
||
|
|
function proc_cmd() {
|
||
|
|
local result
|
||
|
|
local proc_file=$1
|
||
|
|
local status=0
|
||
|
|
# after shift, the remaining args are contained in $@
|
||
|
|
shift
|
||
|
|
local proc_ctrl=${PROC_DIR}/$proc_file
|
||
|
|
if [[ ! -e "$proc_ctrl" ]]; then
|
||
|
|
err 3 "proc file:$proc_ctrl does not exists (dev added to thread?)"
|
||
|
|
else
|
||
|
|
if [[ ! -w "$proc_ctrl" ]]; then
|
||
|
|
err 4 "proc file:$proc_ctrl not writable, not root?!"
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
|
||
|
|
if [[ "$DEBUG" == "yes" ]]; then
|
||
|
|
echo "cmd: $@ > $proc_ctrl"
|
||
|
|
fi
|
||
|
|
# Quoting of "$@" is important for space expansion
|
||
|
|
echo "$@" > "$proc_ctrl" || status=$?
|
||
|
|
|
||
|
|
if [[ "$proc_file" != "pgctrl" ]]; then
|
||
|
|
result=$(grep "Result: OK:" $proc_ctrl) || true
|
||
|
|
if [[ "$result" == "" ]]; then
|
||
|
|
grep "Result:" $proc_ctrl >&2
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
if (( $status != 0 )); then
|
||
|
|
err 5 "Write error($status) occurred cmd: \"$@ > $proc_ctrl\""
|
||
|
|
fi
|
||
|
|
}
|
||
|
|
|
||
|
|
# Old obsolete "pgset" function, with slightly improved err handling
|
||
|
|
function pgset() {
|
||
|
|
local result
|
||
|
|
|
||
|
|
if [[ "$DEBUG" == "yes" ]]; then
|
||
|
|
echo "cmd: $1 > $PGDEV"
|
||
|
|
fi
|
||
|
|
echo $1 > $PGDEV
|
||
|
|
local status=$?
|
||
|
|
|
||
|
|
result=`cat $PGDEV | fgrep "Result: OK:"`
|
||
|
|
if [[ "$result" == "" ]]; then
|
||
|
|
cat $PGDEV | fgrep Result:
|
||
|
|
fi
|
||
|
|
if (( $status != 0 )); then
|
||
|
|
err 5 "Write error($status) occurred cmd: \"$1 > $PGDEV\""
|
||
|
|
fi
|
||
|
|
}
|
||
|
|
|
||
|
|
if [[ -z "$APPEND" ]]; then
|
||
|
|
if [[ $EUID -eq 0 ]]; then
|
||
|
|
# Cleanup pktgen setup on exit if thats not "append mode"
|
||
|
|
trap 'pg_ctrl "reset"' EXIT
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
|
||
|
|
## -- General shell tricks --
|
||
|
|
|
||
|
|
function root_check_run_with_sudo() {
|
||
|
|
# Trick so, program can be run as normal user, will just use "sudo"
|
||
|
|
# call as root_check_run_as_sudo "$@"
|
||
|
|
if [ "$EUID" -ne 0 ]; then
|
||
|
|
if [ -x $0 ]; then # Directly executable use sudo
|
||
|
|
info "Not root, running with sudo"
|
||
|
|
sudo -E "$0" "$@"
|
||
|
|
exit $?
|
||
|
|
fi
|
||
|
|
err 4 "cannot perform sudo run of $0"
|
||
|
|
fi
|
||
|
|
}
|
||
|
|
|
||
|
|
# Exact input device's NUMA node info
|
||
|
|
function get_iface_node()
|
||
|
|
{
|
||
|
|
local node=$(</sys/class/net/$1/device/numa_node)
|
||
|
|
if [[ $node == -1 ]]; then
|
||
|
|
echo 0
|
||
|
|
else
|
||
|
|
echo $node
|
||
|
|
fi
|
||
|
|
}
|
||
|
|
|
||
|
|
# Given an Dev/iface, get its queues' irq numbers
|
||
|
|
function get_iface_irqs()
|
||
|
|
{
|
||
|
|
local IFACE=$1
|
||
|
|
local queues="${IFACE}-.*TxRx"
|
||
|
|
|
||
|
|
irqs=$(grep "$queues" /proc/interrupts | cut -f1 -d:)
|
||
|
|
[ -z "$irqs" ] && irqs=$(grep $IFACE /proc/interrupts | cut -f1 -d:)
|
||
|
|
[ -z "$irqs" ] && irqs=$(for i in `ls -Ux /sys/class/net/$IFACE/device/msi_irqs` ;\
|
||
|
|
do grep "$i:.*TxRx" /proc/interrupts | grep -v fdir | cut -f 1 -d : ;\
|
||
|
|
done)
|
||
|
|
[ -z "$irqs" ] && err 3 "Could not find interrupts for $IFACE"
|
||
|
|
|
||
|
|
echo $irqs
|
||
|
|
}
|
||
|
|
|
||
|
|
# Given a NUMA node, return cpu ids belonging to it.
|
||
|
|
function get_node_cpus()
|
||
|
|
{
|
||
|
|
local node=$1
|
||
|
|
local node_cpu_list
|
||
|
|
local node_cpu_range_list=`cut -f1- -d, --output-delimiter=" " \
|
||
|
|
/sys/devices/system/node/node$node/cpulist`
|
||
|
|
|
||
|
|
for cpu_range in $node_cpu_range_list
|
||
|
|
do
|
||
|
|
node_cpu_list="$node_cpu_list "`seq -s " " ${cpu_range//-/ }`
|
||
|
|
done
|
||
|
|
|
||
|
|
echo $node_cpu_list
|
||
|
|
}
|
||
|
|
|
||
|
|
# Check $1 is in between $2, $3 ($2 <= $1 <= $3)
|
||
|
|
function in_between() { [[ ($1 -ge $2) && ($1 -le $3) ]] ; }
|
||
|
|
|
||
|
|
# Extend shrunken IPv6 address.
|
||
|
|
# fe80::42:bcff:fe84:e10a => fe80:0:0:0:42:bcff:fe84:e10a
|
||
|
|
function extend_addr6()
|
||
|
|
{
|
||
|
|
local addr=$1
|
||
|
|
local sep=: sep2=::
|
||
|
|
local sep_cnt=$(tr -cd $sep <<< $1 | wc -c)
|
||
|
|
local shrink
|
||
|
|
|
||
|
|
# separator count should be (2 <= $sep_cnt <= 7)
|
||
|
|
if ! (in_between $sep_cnt 2 7); then
|
||
|
|
err 5 "Invalid IP6 address: $1"
|
||
|
|
fi
|
||
|
|
|
||
|
|
# if shrink '::' occurs multiple, it's malformed.
|
||
|
|
shrink=( $(grep -E -o "$sep{2,}" <<< $addr) )
|
||
|
|
if [[ ${#shrink[@]} -ne 0 ]]; then
|
||
|
|
if [[ ${#shrink[@]} -gt 1 || ( ${shrink[0]} != $sep2 ) ]]; then
|
||
|
|
err 5 "Invalid IP6 address: $1"
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
|
||
|
|
# add 0 at begin & end, and extend addr by adding :0
|
||
|
|
[[ ${addr:0:1} == $sep ]] && addr=0${addr}
|
||
|
|
[[ ${addr: -1} == $sep ]] && addr=${addr}0
|
||
|
|
echo "${addr/$sep2/$(printf ':0%.s' $(seq $[8-sep_cnt])):}"
|
||
|
|
}
|
||
|
|
|
||
|
|
# Given a single IP(v4/v6) address, whether it is valid.
|
||
|
|
function validate_addr()
|
||
|
|
{
|
||
|
|
# check function is called with (funcname)6
|
||
|
|
[[ ${FUNCNAME[1]: -1} == 6 ]] && local IP6=6
|
||
|
|
local bitlen=$[ IP6 ? 128 : 32 ]
|
||
|
|
local len=$[ IP6 ? 8 : 4 ]
|
||
|
|
local max=$[ 2**(len*2)-1 ]
|
||
|
|
local net prefix
|
||
|
|
local addr sep
|
||
|
|
|
||
|
|
IFS='/' read net prefix <<< $1
|
||
|
|
[[ $IP6 ]] && net=$(extend_addr6 $net)
|
||
|
|
|
||
|
|
# if prefix exists, check (0 <= $prefix <= $bitlen)
|
||
|
|
if [[ -n $prefix ]]; then
|
||
|
|
if ! (in_between $prefix 0 $bitlen); then
|
||
|
|
err 5 "Invalid prefix: /$prefix"
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
|
||
|
|
# set separator for each IP(v4/v6)
|
||
|
|
[[ $IP6 ]] && sep=: || sep=.
|
||
|
|
IFS=$sep read -a addr <<< $net
|
||
|
|
|
||
|
|
# array length
|
||
|
|
if [[ ${#addr[@]} != $len ]]; then
|
||
|
|
err 5 "Invalid IP$IP6 address: $1"
|
||
|
|
fi
|
||
|
|
|
||
|
|
# check each digit (0 <= $digit <= $max)
|
||
|
|
for digit in "${addr[@]}"; do
|
||
|
|
[[ $IP6 ]] && digit=$[ 16#$digit ]
|
||
|
|
if ! (in_between $digit 0 $max); then
|
||
|
|
err 5 "Invalid IP$IP6 address: $1"
|
||
|
|
fi
|
||
|
|
done
|
||
|
|
|
||
|
|
return 0
|
||
|
|
}
|
||
|
|
|
||
|
|
function validate_addr6() { validate_addr $@ ; }
|
||
|
|
|
||
|
|
# Given a single IP(v4/v6) or CIDR, return minimum and maximum IP addr.
|
||
|
|
function parse_addr()
|
||
|
|
{
|
||
|
|
# check function is called with (funcname)6
|
||
|
|
[[ ${FUNCNAME[1]: -1} == 6 ]] && local IP6=6
|
||
|
|
local net prefix
|
||
|
|
local min_ip max_ip
|
||
|
|
|
||
|
|
IFS='/' read net prefix <<< $1
|
||
|
|
[[ $IP6 ]] && net=$(extend_addr6 $net)
|
||
|
|
|
||
|
|
if [[ -z $prefix ]]; then
|
||
|
|
min_ip=$net
|
||
|
|
max_ip=$net
|
||
|
|
else
|
||
|
|
# defining array for converting Decimal 2 Binary
|
||
|
|
# 00000000 00000001 00000010 00000011 00000100 ...
|
||
|
|
local d2b='{0..1}{0..1}{0..1}{0..1}{0..1}{0..1}{0..1}{0..1}'
|
||
|
|
[[ $IP6 ]] && d2b+=$d2b
|
||
|
|
eval local D2B=($d2b)
|
||
|
|
|
||
|
|
local bitlen=$[ IP6 ? 128 : 32 ]
|
||
|
|
local remain=$[ bitlen-prefix ]
|
||
|
|
local octet=$[ IP6 ? 16 : 8 ]
|
||
|
|
local min_mask max_mask
|
||
|
|
local min max
|
||
|
|
local ip_bit
|
||
|
|
local ip sep
|
||
|
|
|
||
|
|
# set separator for each IP(v4/v6)
|
||
|
|
[[ $IP6 ]] && sep=: || sep=.
|
||
|
|
IFS=$sep read -ra ip <<< $net
|
||
|
|
|
||
|
|
min_mask="$(printf '1%.s' $(seq $prefix))$(printf '0%.s' $(seq $remain))"
|
||
|
|
max_mask="$(printf '0%.s' $(seq $prefix))$(printf '1%.s' $(seq $remain))"
|
||
|
|
|
||
|
|
# calculate min/max ip with &,| operator
|
||
|
|
for i in "${!ip[@]}"; do
|
||
|
|
digit=$[ IP6 ? 16#${ip[$i]} : ${ip[$i]} ]
|
||
|
|
ip_bit=${D2B[$digit]}
|
||
|
|
|
||
|
|
idx=$[ octet*i ]
|
||
|
|
min[$i]=$[ 2#$ip_bit & 2#${min_mask:$idx:$octet} ]
|
||
|
|
max[$i]=$[ 2#$ip_bit | 2#${max_mask:$idx:$octet} ]
|
||
|
|
[[ $IP6 ]] && { min[$i]=$(printf '%X' ${min[$i]});
|
||
|
|
max[$i]=$(printf '%X' ${max[$i]}); }
|
||
|
|
done
|
||
|
|
|
||
|
|
min_ip=$(IFS=$sep; echo "${min[*]}")
|
||
|
|
max_ip=$(IFS=$sep; echo "${max[*]}")
|
||
|
|
fi
|
||
|
|
|
||
|
|
echo $min_ip $max_ip
|
||
|
|
}
|
||
|
|
|
||
|
|
function parse_addr6() { parse_addr $@ ; }
|
||
|
|
|
||
|
|
# Given a single or range of port(s), return minimum and maximum port number.
|
||
|
|
function parse_ports()
|
||
|
|
{
|
||
|
|
local port_str=$1
|
||
|
|
local port_list
|
||
|
|
local min_port
|
||
|
|
local max_port
|
||
|
|
|
||
|
|
IFS="-" read -ra port_list <<< $port_str
|
||
|
|
|
||
|
|
min_port=${port_list[0]}
|
||
|
|
max_port=${port_list[1]:-$min_port}
|
||
|
|
|
||
|
|
echo $min_port $max_port
|
||
|
|
}
|
||
|
|
|
||
|
|
# Given a minimum and maximum port, verify port number.
|
||
|
|
function validate_ports()
|
||
|
|
{
|
||
|
|
local min_port=$1
|
||
|
|
local max_port=$2
|
||
|
|
|
||
|
|
# 1 <= port <= 65535
|
||
|
|
if (in_between $min_port 1 65535); then
|
||
|
|
if (in_between $max_port 1 65535); then
|
||
|
|
if [[ $min_port -le $max_port ]]; then
|
||
|
|
return 0
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
|
||
|
|
err 5 "Invalid port(s): $min_port-$max_port"
|
||
|
|
}
|