mirror of
https://github.com/rtbrick/bngblaster.git
synced 2024-05-06 15:54:57 +00:00
61 lines
2.7 KiB
Lua
61 lines
2.7 KiB
Lua
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-- BNG Blaster Header Dissector
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bbl_proto = Proto("BNG-BLASTER", "BNG Blaster Header")
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local mn_f = ProtoField.uint64("bbl_proto.mn", "Magic Sequence", base.DEC, none, none)
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local ht_f = ProtoField.uint8("bbl_proto.ht", "Type", base.DEC,
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{[0]="reserved", [1]="Unicast Session Traffic", [2]="Multicast"}, none)
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local st_f = ProtoField.uint8("bbl_proto.st", "Sub-Type", base.DEC,
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{[0]="reserved", [1]="IPv4", [2]="IPv6", [3]="IPv6PD"}, none)
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local hd_f = ProtoField.uint8("bbl_proto.hd", "Direction", base.DEC,
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{[0]="reserved", [1]="upstream", [2]="downstream"}, none)
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local tt_f = ProtoField.uint8("bbl_proto.tt", "TX TOS", base.DEC, none)
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local ii_f = ProtoField.uint32("bbl_proto.ii", "Session Access Interface Index", base.DEC, none, none)
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local ov_f = ProtoField.uint16("bbl_proto.ov", "Session Outer VLAN", base.DEC, none, none)
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local iv_f = ProtoField.uint16("bbl_proto.iv", "Session Inner VLAN", base.DEC, none, none)
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local ms_f = ProtoField.ipv4("bbl_proto.ms", "Multicast Source", base.DEC, none, none)
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local mg_f = ProtoField.ipv4("bbl_proto.mg", "Multicast Group", base.DEC, none, none)
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local fi_f = ProtoField.uint64("bbl_proto.fi", "Flow Identifier", base.DEC, none, none)
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local sn_f = ProtoField.uint64("bbl_proto.sn", "Flow Sequence Number", base.DEC, none, none)
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local ts_f = ProtoField.uint32("bbl_proto.ts", "Send Timestamp Seconds", base.DEC, none, none)
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local tn_f = ProtoField.uint32("bbl_proto.tn", "Send Timestamp Nanoseconds", base.DEC, none, none)
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bbl_proto.fields = {mn_f, ht_f, st_f, hd_f, tt_f, ii_f, ov_f, iv_f, ms_f, mg_f, fi_f, sn_f, ts_f, tn_f}
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local data_dissector = Dissector.get("data")
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local ethernet_dissector = DissectorTable.get("wtap_encap"):get_dissector(1)
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function bbl_proto.dissector(buffer,pinfo,tree)
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pinfo.cols.protocol = "BNG-BLASTER"
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local subtree = tree:add(bbl_proto, buffer(0,48), "BNG-BLASTER")
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subtree:add_le(mn_f, buffer(0, 8))
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subtree:add(ht_f, buffer(8, 1))
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subtree:add(st_f, buffer(9, 1))
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subtree:add(hd_f, buffer(10, 1))
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subtree:add(tt_f, buffer(11, 1))
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-- reserved ---
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local header_type = buffer(8,1):uint()
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if header_type == 1 then
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-- unicast session traffic
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subtree:add_le(ii_f, buffer(16, 4))
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subtree:add_le(ov_f, buffer(20, 2))
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subtree:add_le(iv_f, buffer(22, 2))
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end
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if header_type == 2 then
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-- mulicast traffic
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subtree:add(ms_f, buffer(16, 4))
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subtree:add(mg_f, buffer(20, 4))
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end
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subtree:add_le(fi_f, buffer(24, 8))
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subtree:add_le(sn_f, buffer(32, 8))
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subtree:add_le(ts_f, buffer(40, 4))
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subtree:add_le(tn_f, buffer(44, 4))
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end
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-- load the udp.port table
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udp_table = DissectorTable.get("udp.port")
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-- register our protocol to handle udp port 7777
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udp_table:add(65056,bbl_proto)
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