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35 lines
947 B
OCaml
35 lines
947 B
OCaml
(* Copyright (C) 2015, Thomas Leonard <thomas.leonard@unikernel.com>
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See the README file for details. *)
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open Fw_utils
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(* The routing table *)
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type t = {
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clients : Client_eth.t;
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nat : My_nat.t;
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uplink : interface;
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}
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let create ~clients ~uplink ~nat =
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{ clients; nat; uplink }
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let target t buf =
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let dst_ip = buf.Ipv4_packet.dst in
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match Client_eth.lookup t.clients dst_ip with
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| Some client_link -> Some (client_link :> interface)
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| None -> Some t.uplink
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let add_client t = Client_eth.add_client t.clients
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let remove_client t = Client_eth.remove_client t.clients
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let classify t ip =
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if ip = Ipaddr.V4 t.uplink#my_ip then `Firewall
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else if ip = Ipaddr.V4 t.uplink#other_ip then `NetVM
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else (Client_eth.classify t.clients ip :> Packet.host)
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let resolve t = function
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| `Firewall -> Ipaddr.V4 t.uplink#my_ip
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| `NetVM -> Ipaddr.V4 t.uplink#other_ip
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| #Client_eth.host as host -> Client_eth.resolve t.clients host
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