From ed3157ce46cde0f3973a5ee0a0a53909f361ae7c Mon Sep 17 00:00:00 2001
From: Neels Hofmeyr <neels@hofmeyr.de>
Date: Tue, 4 Jul 2017 23:08:44 +0200
Subject: move openbsc/* to repos root

This is the first step in creating this repository from the legacy openbsc.git.

Like all other Osmocom repositories, keep the autoconf and automake files in
the repository root. openbsc.git has been the sole exception, which ends now.

Change-Id: I9c6f2a448d9cb1cc088cf1cf6918b69d7e69b4e7
---
 contrib/gprs/gprs-bssgp-histogram.lua | 78 +++++++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 contrib/gprs/gprs-bssgp-histogram.lua

(limited to 'contrib/gprs/gprs-bssgp-histogram.lua')

diff --git a/contrib/gprs/gprs-bssgp-histogram.lua b/contrib/gprs/gprs-bssgp-histogram.lua
new file mode 100644
index 000000000..b1ab5df7f
--- /dev/null
+++ b/contrib/gprs/gprs-bssgp-histogram.lua
@@ -0,0 +1,78 @@
+-- Simple LUA script to print the size of BSSGP messages over their type...
+
+do
+	local ip_bucket = {}
+
+	local pdu_types = {}
+	pdu_types[ 6] = "PAGING"
+	pdu_types[11] = "SUSPEND"
+	pdu_types[12] = "SUSPEND-ACK"
+	pdu_types[32] = "BVC-BLOCK"
+	pdu_types[33] = "BVC-BLOCK-ACK"
+	pdu_types[34] = "BVC-RESET"
+	pdu_types[35] = "BVC-RESET-ACK"
+	pdu_types[36] = "UNBLOCK"
+	pdu_types[37] = "UNBLOCK-ACK"
+	pdu_types[38] = "FLOW-CONTROL-BVC"
+	pdu_types[39] = "FLOW-CONTROL-BVC-ACK"
+	pdu_types[40] = "FLOW-CONTROL-MS"
+	pdu_types[41] = "FLOW-CONTROL-MS-ACK"
+	pdu_types[44] = "LLC-DISCARDED"
+
+	local function init_listener()
+		-- handle the port as NS over IP
+		local udp_port_table = DissectorTable.get("udp.port")
+		local gprs_ns_dis = Dissector.get("gprs_ns")
+		udp_port_table:add(23000,gprs_ns_dis)
+
+		-- bssgp filters
+		local bssgp_pdu_get = Field.new("bssgp.pdu_type")
+		local udp_length_get = Field.new("udp.length")
+
+		local tap = Listener.new("ip", "udp.port == 23000")
+		function tap.packet(pinfo,tvb,ip)
+			local pdu = bssgp_pdu_get()
+			local len = udp_length_get()
+
+			-- only handle bssgp, but we also want the IP frame
+			if not pdu then
+				return
+			end
+
+			pdu = tostring(pdu)
+			if tonumber(pdu) == 0 or tonumber(pdu) == 1 then
+				return
+			end
+
+			local ip_src = tostring(ip.ip_src)
+			local bssgp_histo = ip_bucket[ip_src]
+			if not bssgp_histo then
+				bssgp_histo = {}
+				ip_bucket[ip_src] = bssgp_histo
+			end
+
+			local key = pdu
+			local bucket = bssgp_histo[key]
+			if not bucket then
+				bucket = {}
+				bssgp_histo[key] = bucket
+			end
+
+			table.insert(bucket, tostring(len))
+			print("IP: " .. ip_src .. " PDU: " .. pdu_types[tonumber(pdu)] .. " Length: " .. tostring(len))
+		end
+
+		function tap.draw()
+			-- well... this will not be called...
+--			for ip,bssgp_histo in pairs(dumpers) do
+--				print("IP " .. ip)
+--			end
+		end
+
+		function tap.reset()
+			-- well... this will not be called...
+		end
+	end
+
+	init_listener()
+end
-- 
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