pkt

%% Copyright (c) 2009-2015, Michael Santos <michael.santos@gmail.com>
%% All rights reserved.
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%% Redistribution and use in source and binary forms, with or without
%% modification, are permitted provided that the following conditions
%% are met:
%%
%% Redistributions of source code must retain the above copyright
%% notice, this list of conditions and the following disclaimer.
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%% Redistributions in binary form must reproduce the above copyright
%% notice, this list of conditions and the following disclaimer in the
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%% Neither the name of the author nor the names of its contributors
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%% POSSIBILITY OF SUCH DAMAGE.
-module(pkt_ipv6).

%% RFC 2460: Internet Protocol, Version 6 (IPv6) Specification

-include("pkt_ipproto.hrl").
-include("pkt_ipv6.hrl").

-export([codec/1]).

codec(
    <<6:4, Class:8, Flow:20,
    Len:16, Next:8, Hop:8,
    SA1:16, SA2:16, SA3:16, SA4:16, SA5:16, SA6:16, SA7:16, SA8:16,
    DA1:16, DA2:16, DA3:16, DA4:16, DA5:16, DA6:16, DA7:16, DA8:16,
    Payload/binary>>
) ->
    {#ipv6{
        class = Class, flow = Flow,
        len = Len, next = Next, hop = Hop,
        saddr = {SA1, SA2, SA3, SA4, SA5, SA6, SA7, SA8},
        daddr = {DA1, DA2, DA3, DA4, DA5, DA6, DA7, DA8}
    }, Payload};
codec(#ipv6{
        class = Class, flow = Flow,
        len = Len, next = Next, hop = Hop,
        saddr = {SA1, SA2, SA3, SA4, SA5, SA6, SA7, SA8},
        daddr = {DA1, DA2, DA3, DA4, DA5, DA6, DA7, DA8}
    }) ->
    <<6:4, Class:8, Flow:20,
    Len:16, Next:8, Hop:8,
    SA1:16, SA2:16, SA3:16, SA4:16, SA5:16, SA6:16, SA7:16, SA8:16,
    DA1:16, DA2:16, DA3:16, DA4:16, DA5:16, DA6:16, DA7:16, DA8:16>>.