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--
-- (C) 2013-22 - ntop.org
--
local dirs = ntop.getDirs()
package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
require "lua_utils"
sendHTTPContentTypeHeader('text/html')
interface.select(ifname)
local ifstats = interface.getStats()
local distr_type = _GET["distr"]
if((distr_type == nil) or (distr_type == "size")) then
what = ifstats["pktSizeDistribution"]["size"]
elseif distr_type == "ipver" then
print "[\n"
print("\t { \"label\": \"IPv6\", \"value\": ".. ifstats.eth.IPv6_packets .." },")
print("\t { \"label\": \"IPv4\", \"value\": ".. ifstats.eth.IPv4_packets .." }")
print "\n]"
return
end
local pkt_distribution = {
['upTo64'] = '<= 64',
['upTo128'] = '64 <= 128',
['upTo256'] = '128 <= 256',
['upTo512'] = '256 <= 512',
['upTo1024'] = '512 <= 1024',
['upTo1518'] = '1024 <= 1518',
['upTo2500'] = '1518 <= 2500',
['upTo6500'] = '2500 <= 6500',
['upTo9000'] = '6500 <= 9000',
['above9000'] = '> 9000'
}
local tot = 0
for key, value in pairs(what) do
tot = tot + value
end
local threshold = (tot * 5) / 100
print "[\n"
num = 0
local sum = 0
for key, value in pairs(what) do
if(value > threshold) then
if(pkt_distribution[key] ~= nil) then
if(num > 0) then
print ",\n"
end
print("\t { \"label\": \"" .. pkt_distribution[key] .."\", \"value\": ".. value .." }")
num = num + 1
sum = sum + value
end
end
end
if(sum < tot) then
print("\t, { \"label\": \"Other\", \"value\": ".. (tot-sum) .." }")
end
print "\n]"
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