traffic-profile.lua

-- CGCS Demo script
--
-- SPDX-License-Identifier: BSD-3-Clause

package.path = package.path ..";?.lua;test/?.lua;app/?.lua;../?.lua"

require "Pktgen";

local time_step = 10;		-- seconds
local pcnt_rate = { 10, 20, 40, 60, 60, 60, 60, 60, 60, 80, 80, 80, 80, 80, 70, 70, 70, 70, 60, 60, 60, 40, 40, 70, 70, 80, 80, 40, 40, 40 };

sendport	= 0;
recvport	= 0;
pkt_size	= 64;
local dstip = "10.10.0.100";
local srcip = "10.10.0.101";
local netmask = "/24";
total_time = 0;

-- Take two lists and create one table with a merged value of the tables.
-- Return a set or table = { { timo, rate }, ... }
function Set(step, list)
	local	set = { };		-- Must have a empty set first.

	for i,v in ipairs(list) do
		set[i] = { timo = step, rate = v };
	end

	return set;
end

function main()
	local sending = 0;
	local trlst = Set(time_step, pcnt_rate);

	-- Stop the port sending and reset to
	pktgen.stop(sendport);
	sleep(2);					-- Wait for stop to happen (not really needed)

	-- Set up the default packet size fixed value for now.
	pktgen.set(sendport, "size", pkt_size);

	pktgen.set_ipaddr(sendport, "dst", dstip);
	pktgen.set_ipaddr(sendport, "src", srcip..netmask);

	pktgen.set_proto(sendport..","..recvport, "udp");

	total_time = 0;
	-- v is the table to values created by the Set(x,y) function
	for _,v in pairs(trlst) do

		printf("   Percent load %d for %d seconds\n", v.rate, v.timo);

		-- Set the rate to the new value
		pktgen.set(sendport, "rate", v.rate);

		-- If not sending packets start sending them
		if ( sending == 0 ) then
			pktgen.start(sendport);
			sending = 1;
		end

		-- Sleep until we need to move to the next rate and timeout
		sleep(v.timo);
		total_time = total_time + v.timo;

	end

	-- Stop the port and do some cleanup
	pktgen.stop(sendport);
	sending = 0;
end

printf("\n**** Traffic Profile Rate for %d byte packets ***\n", pkt_size);
main();
printf("\n*** Traffic Profile Done (Total Time %d) ***\n", total_time);