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samples: pktgen: add some helper functions for port parsing 

This commit adds port parsing and port validate helper function to parse
single or range of port(s) from a given string. (e.g. 1234, 443-444)

Helpers will be used in prior to set target port(s) in samples/pktgen.

Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel T. Lee 2019-06-29 22:33:57 +09:00 committed by David S. Miller
parent a346abe051
commit 226b96c25d
1 changed files with 34 additions and 0 deletions
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34
samples/pktgen/functions.sh
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@ -162,3 +162,37 @@ function get_node_cpus()
echo $node_cpu_list
}
# 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
# 0 < port < 65536
if [[ $min_port -gt 0 && $min_port -lt 65536 ]]; then
if [[ $max_port -gt 0 && $max_port -lt 65536 ]]; then
if [[ $min_port -le $max_port ]]; then
return 0
fi
fi
fi
err 5 "Invalid port(s): $min_port-$max_port"
}