Module Eth.TRX

module TRX: sig .. end

An Ethernet TRX will convert from payload to Ethernet frames (resolving destinations using ARP), for a single Arp.HwProto.t.

type t = {

	`src : Eth.Addr.t;`
	`gw : Eth.gw_addr option;`
	`proto : Arp.HwProto.t;`
	`mtu : int;`
	`mutable my_addresses : Bitstring.bitstring list;`
	`mutable emit : Bitstring.bitstring -> unit;`
	`mutable recv : Bitstring.bitstring -> unit;`
	`mutable promisc : Bitstring.bitstring -> unit;`
	`arp_cache : Eth.Addr.t option Tools.BitHash.t;`
	`delayed : Bitstring.bitstring Tools.BitHash.t;`

}

type eth_trx = {

	`trx : Tools.trx;`
	`set_promiscuous : (Bitstring.bitstring -> unit) -> unit;`
	`set_addresses : Bitstring.bitstring list -> unit;`
	`get_source : unit -> Eth.Addr.t;`
	`arp_set : Bitstring.bitstring -> Eth.Addr.t option -> unit;`

}

val send : t -> Arp.HwProto.t -> Eth.Addr.t -> Tools.Payload.outer_t -> unit

Low level send fonction. Takes a Arp.HwProto.t since it's used both for the user payload protocol and ARP protocol.

val resolve_proto_addr : t ->
       Bitstring.bitstring -> Bitstring.bitstring -> Bitstring.bitstring -> unit

type dst =

`\|`	`Delayed`
`\|`	`Dst of Eth.Addr.t`

val arp_resolve_ipv4 : t ->
       Bitstring.bitstring ->
       Bitstring.bitstring -> Tools.BitHash.key -> dst

val dst_for : t -> Bitstring.bitstring -> dst Batteries.Option.Monad.m

val tx : t -> Bitstring.bitstring -> unit

Transmit function. tx t payload Will send the payload.

val rx : t -> string * int * int -> unit

Receive function, called to input an Ethernet frame into the TRX.

val make : ?mtu:int ->
       Eth.Addr.t ->
       ?gw:Eth.gw_addr ->
       ?promisc:(Bitstring.bitstring -> unit) ->
       Arp.HwProto.t -> Bitstring.bitstring list -> eth_trx

Creates an Eth.TRX.t.

mtu : the maximum transmit unit (ie. you won't be able to send longer payloads)

src : the source Eth.Addr.t

gw : an optional gateway

promisc : an optional function that will receive frames received but not destined to this TRX.

proto : the Arp.HwProto.t we want to transmit/receive.

my_addresses : a list of bitstrings that we consider to be our address (used for instance to reply to ARP queries)