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in-package search v0.1.0
type error = private [>
The type for IP errors.
type buffer = Cstruct.t
The type for memory buffers.
type ipaddr = Ipaddr.V4.t
The type for IP addresses.
include Mirage_device.S with type 'a io = 'a Lwt.t
type 'a io = 'a Lwt.t
The type for potentially blocking I/O operation
An input continuation used by the parsing functions to pass on an input packet down the stack.
callback ~src ~dst buf will be called with
dst containing the source and destination IP address respectively, and
buf will be a buffer pointing at the start of the IP payload.
val input : t -> tcp:callback -> udp:callback -> default:(proto:int -> callback) -> buffer -> unit io
input ~tcp ~udp ~default ip buf demultiplexes an incoming
buffer that contains an IP frame. It examines the protocol header and passes the result onto either the
udp function, or the
default function for unknown IP protocols.
val write : t -> ?fragment:bool -> ?ttl:int -> ?src:ipaddr -> ipaddr -> Mirage_protocols.Ip.proto -> ?size:int -> (buffer -> int) -> buffer list -> (unit, error) result io
write t ~fragment ~ttl ~src dst proto ~size headerf payload allocates a buffer, writes the IP header, and calls the headerf function. This may write to the provided buffer of
size (default 0). If
size + ip header exceeds the maximum transfer unit, an error is returned. The
payload is appended. The optional
fragment argument defaults to
true, in which case multiple IP-fragmented frames are sent if the payload is too big for a single frame. When it is
false, the don't fragment bit is set and if the payload and header would exceed the maximum transfer unit, an error is returned.
val pseudoheader : t -> ?src:ipaddr -> ipaddr -> Mirage_protocols.Ip.proto -> int -> buffer
pseudoheader t ~src dst proto len gives a pseudoheader suitable for use in TCP or UDP checksum calculation based on
src ip ~dst is the source address to be used to send a packet to
dst. In the case of IPv4, this will always return the same IP, which is the only one set.
Set the IP address associated with this interface. For IPv4, currently only supports a single IPv4 address, and aliases will be added in a future revision.
Get the IP addresses associated with this interface. For IPv4, only * one IP address can be set at a time, so the list will always be of * length 1 (and may be the default value, 0.0.0.0).
type uipaddr = Ipaddr.t
The type for universal IP addresses. It supports all the possible versions.
Convert an IP address with a specific version (eg. V4) into a universal IP address.
Project a universal IP address into the version supported by the current implementation. Return
None if there is a version mismatch.
val mtu : t -> int
mtu ip is the Maximum Transmission Unit of the
ip i.e. the maximum size of the payload, not including the IP header.