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flower_packet.erl
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flower_packet.erl
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-module(flower_packet).
%% API
-export([encode/1, encode_msg/1, encode_match/1, decode/1]).
%% constant mappers
-export([ofpt/1, ofp_packet_in_reason/1, ofp_config_flags/1,
ofp_flow_mod_command/1, ofp_port/1, eth_type/1]).
%% part encoders
-export([encode_ofs_action_output/2, encode_ofs_action_vlan_vid/1,
encode_ofs_action_vlan_pcp/1, encode_ofs_action_strip_vlan/0,
encode_ofs_action_dl_addr/2, encode_ofs_action_nw_addr/2,
encode_ofs_action_nw_tos/1, encode_ofs_action_tp_addr/2,
encode_ofs_action_enqueue/2, encode_ofs_action_vendor/2,
encode_nx_action_resubmit/1, encode_nx_action_set_tunnel/1,
encode_nx_action_set_tunnel64/1, encode_nx_action_set_queue/1,
encode_nx_action_pop_queue/0, encode_nx_action_reg_move/5,
encode_nx_action_reg_load/4, encode_nx_action_note/1,
encode_nx_action_multipath/8, encode_nx_action_autopath/4,
nxm_header/1, encode_nx_action/2,
encode_actions/1,
encode_action/1,
encode_ofp_match/13,
encode_ofp_flow_mod/10,
encode_ofp_flow_removed/8,
encode_ofp_packet_out/4]).
%% --------------------------------------------------------------------
%% Include files
%% --------------------------------------------------------------------
-include("flower_packet.hrl").
%% --------------------------------------------------------------------
-type int8() :: 0..16#ff.
-type int16() :: 0..16#ffff.
-type int32() :: 0..16#ffffffff.
%%%===================================================================
%%% API
%%%===================================================================
%%--------------------------------------------------------------------
%% @doc
%% @spec
%% @end
%%--------------------------------------------------------------------
decode(Msg) ->
decode(Msg, []).
decode(<<Version:8/integer, Type:8/integer, Length:16/integer, Xid:32/integer,
_/binary>> = Data, Acc)
when size(Data) >= Length ->
MsgLen = Length - 8,
<<_Hdr:8/bytes, Msg:MsgLen/bytes, Rest/binary>> = Data,
MType = ofpt(Type),
M = decode_msg(MType, Msg),
lager:debug("decode got: ~p", [M]),
decode(Rest, [#ovs_msg{version = Version, type = MType, xid = Xid, msg = M}|Acc]);
decode(Rest, Acc) ->
{lists:reverse(Acc), Rest}.
encode(#ovs_msg{version = Version, type = Type, xid = Xid, msg = Msg}) ->
Mtype = ofpt(Type),
Data = encode_msg(Msg),
Length = size(Data) + 8,
lager:debug("~p ~p ~p ~p ~p", [Version, Mtype, Length, Xid, Msg]),
R = <<Version:8, Mtype:8, Length:16, Xid:32, Data/binary>>,
lager:debug("Send: ~p", [R]),
R;
encode(Msg) when is_list(Msg) ->
encode(Msg, []).
encode([], Acc) ->
list_to_binary(lists:reverse(Acc));
encode([Msg|Rest], Acc) ->
encode(Rest, [encode(Msg)|Acc]).
%%%===================================================================
%%% constant, flags and enum translators
%%%===================================================================
-define(VENDOR_NICIRA, 16#2320).
vendor(?VENDOR_NICIRA) -> nicira;
vendor(X) when is_integer(X) -> X;
vendor(nicira) -> ?VENDOR_NICIRA.
eth_type(?ETH_TYPE_IP) -> ip;
eth_type(?ETH_TYPE_ARP) -> arp;
eth_type(?ETH_TYPE_RARP) -> rarp;
eth_type(?ETH_TYPE_MOPRC) -> moprc;
eth_type(?ETH_TYPE_VLAN) -> vlan;
eth_type(?ETH_TYPE_IPV6) -> ipv6;
eth_type(?ETH_TYPE_LACP) -> lacp;
eth_type(?ETH_TYPE_LOOP) -> loop;
eth_type(X) when is_integer(X) -> X;
eth_type(none) -> ?ETH_TYPE_NONE;
eth_type(ip) -> ?ETH_TYPE_IP;
eth_type(arp) -> ?ETH_TYPE_ARP;
eth_type(rarp) -> ?ETH_TYPE_RARP;
eth_type(moprc) -> ?ETH_TYPE_MOPRC;
eth_type(vlan) -> ?ETH_TYPE_VLAN;
eth_type(ipv6) -> ?ETH_TYPE_IPV6;
eth_type(lacp) -> ?ETH_TYPE_LACP;
eth_type(loop) -> ?ETH_TYPE_LOOP;
eth_type(undefined) -> 0.
ofpt(0) -> hello;
ofpt(1) -> error;
ofpt(2) -> echo_request;
ofpt(3) -> echo_reply;
ofpt(4) -> vendor;
ofpt(5) -> features_request;
ofpt(6) -> features_reply;
ofpt(7) -> get_config_request;
ofpt(8) -> get_config_reply;
ofpt(9) -> set_config;
ofpt(10) -> packet_in;
ofpt(11) -> flow_removed;
ofpt(12) -> port_status;
ofpt(13) -> packet_out;
ofpt(14) -> flow_mod;
ofpt(15) -> port_mod;
ofpt(16) -> stats_request;
ofpt(17) -> stats_reply;
ofpt(18) -> barrier_request;
ofpt(19) -> barrier_reply;
ofpt(20) -> queue_get_config_request;
ofpt(21) -> queue_get_config_reply;
ofpt(hello) -> 0;
ofpt(error) -> 1;
ofpt(echo_request) -> 2;
ofpt(echo_reply) -> 3;
ofpt(vendor) -> 4;
ofpt(features_request) -> 5;
ofpt(features_reply) -> 6;
ofpt(get_config_request) -> 7;
ofpt(get_config_reply) -> 8;
ofpt(set_config) -> 9;
ofpt(packet_in) -> 10;
ofpt(flow_removed) -> 11;
ofpt(port_status) -> 12;
ofpt(packet_out) -> 13;
ofpt(flow_mod) -> 14;
ofpt(port_mod) -> 15;
ofpt(stats_request) -> 16;
ofpt(stats_reply) -> 17;
ofpt(barrier_request) -> 18;
ofpt(barrier_reply) -> 19;
ofpt(queue_get_config_request) -> 20;
ofpt(queue_get_config_reply) -> 21;
ofpt(_) -> error.
-spec ofp_error_type(non_neg_integer()) -> ofp_error_type() | non_neg_integer();
(ofp_error_type()) -> non_neg_integer().
ofp_error_type(hello_failed) -> 0;
ofp_error_type(bad_request) -> 1;
ofp_error_type(bad_action) -> 2;
ofp_error_type(flow_mod_failed) -> 3;
ofp_error_type(port_mod_failed) -> 4;
ofp_error_type(queue_op_failed) -> 5;
ofp_error_type(0) -> hello_failed;
ofp_error_type(1) -> bad_request;
ofp_error_type(2) -> bad_action;
ofp_error_type(3) -> flow_mod_failed;
ofp_error_type(4) -> port_mod_failed;
ofp_error_type(5) -> queue_op_failed;
ofp_error_type(X) when is_integer(X) -> X.
-spec ofp_error_code_type(ofp_error_type(), non_neg_integer()) -> atom() | 'error';
(ofp_error_type(), atom()) -> non_neg_integer() | 'error'.
ofp_error_code_type(hello_failed, 0) -> incompatible;
ofp_error_code_type(hello_failed, 1) -> eperm;
ofp_error_code_type(bad_request, 0) -> bad_version;
ofp_error_code_type(bad_request, 1) -> bad_type;
ofp_error_code_type(bad_request, 2) -> bad_stat;
ofp_error_code_type(bad_request, 3) -> bad_vendor;
ofp_error_code_type(bad_request, 4) -> bad_subtype;
ofp_error_code_type(bad_request, 5) -> eperm;
ofp_error_code_type(bad_request, 6) -> bad_len;
ofp_error_code_type(bad_request, 7) -> buffer_empty;
ofp_error_code_type(bad_request, 8) -> buffer_unknown;
ofp_error_code_type(bad_action, 0) -> bad_type;
ofp_error_code_type(bad_action, 1) -> bad_len;
ofp_error_code_type(bad_action, 2) -> bad_vendor;
ofp_error_code_type(bad_action, 3) -> bad_vendor_type;
ofp_error_code_type(bad_action, 4) -> bad_out_port;
ofp_error_code_type(bad_action, 5) -> bad_argument;
ofp_error_code_type(bad_action, 6) -> eperm;
ofp_error_code_type(bad_action, 7) -> too_many;
ofp_error_code_type(bad_action, 8) -> bad_queue;
ofp_error_code_type(flow_mod_failed, 0) -> all_tables_full;
ofp_error_code_type(flow_mod_failed, 1) -> overlap;
ofp_error_code_type(flow_mod_failed, 2) -> eperm;
ofp_error_code_type(flow_mod_failed, 3) -> bad_emerg_timeout ;
ofp_error_code_type(flow_mod_failed, 4) -> bad_command;
ofp_error_code_type(flow_mod_failed, 5) -> unsupported;
ofp_error_code_type(port_mod_failed, 0) -> bad_port;
ofp_error_code_type(port_mod_failed, 1) -> bad_hw_addr;
ofp_error_code_type(queue_op_failed, 0) -> bad_port;
ofp_error_code_type(queue_op_failed, 1) -> bad_queue;
ofp_error_code_type(queue_op_failed, 2) -> eperm;
ofp_error_code_type(hello_failed, incompatible) -> 0;
ofp_error_code_type(hello_failed, eperm) -> 1;
ofp_error_code_type(bad_request, bad_version) -> 0;
ofp_error_code_type(bad_request, bad_type) -> 1;
ofp_error_code_type(bad_request, bad_stat) -> 2;
ofp_error_code_type(bad_request, bad_vendor) -> 3;
ofp_error_code_type(bad_request, bad_subtype) -> 4;
ofp_error_code_type(bad_request, eperm) -> 5;
ofp_error_code_type(bad_request, bad_len) -> 6;
ofp_error_code_type(bad_request, buffer_empty) -> 7;
ofp_error_code_type(bad_request, buffer_unknown) -> 8;
ofp_error_code_type(bad_action, bad_type) -> 0;
ofp_error_code_type(bad_action, bad_len) -> 1;
ofp_error_code_type(bad_action, bad_vendor) -> 2;
ofp_error_code_type(bad_action, bad_vendor_type) -> 3;
ofp_error_code_type(bad_action, bad_out_port) -> 4;
ofp_error_code_type(bad_action, bad_argument) -> 5;
ofp_error_code_type(bad_action, eperm) -> 6;
ofp_error_code_type(bad_action, too_many) -> 7;
ofp_error_code_type(bad_action, bad_queue) -> 8;
ofp_error_code_type(flow_mod_failed, all_tables_full) -> 0;
ofp_error_code_type(flow_mod_failed, overlap) -> 1;
ofp_error_code_type(flow_mod_failed, eperm) -> 2;
ofp_error_code_type(flow_mod_failed, bad_emerg_timeout )-> 3;
ofp_error_code_type(flow_mod_failed, bad_command) -> 4;
ofp_error_code_type(flow_mod_failed, unsupported) -> 5;
ofp_error_code_type(port_mod_failed, bad_port) -> 0;
ofp_error_code_type(port_mod_failed, bad_hw_addr) -> 1;
ofp_error_code_type(queue_op_failed, bad_port) -> 0;
ofp_error_code_type(queue_op_failed, bad_queue) -> 1;
ofp_error_code_type(queue_op_failed, eperm) -> 2;
ofp_error_code_type(_, _) -> error.
ofp_capabilities() ->
[flow_stats, table_stats, port_stats, stp, reserved, ip_reasm, queue_stats, arp_match_ip].
ofp_action_type() ->
[output, set_vlan_vid, set_vlan_pcp, strip_vlan, set_dl_src, set_dl_dst,
set_nw_src, set_nw_dst, set_nw_tos, set_tp_src, set_tp_dst, enqueue].
ofp_port_config() ->
[port_down, no_stp, no_recv, no_recv_stp, no_flood, no_fwd, no_packet_in].
ofp_port_state() ->
[link_down, stp_listen, stp_learn, stp_forward, stp_block].
ofp_port_features() ->
['10mb_hd', '10mb_fd', '100mb_hd', '100mb_fd', '1gb_hd', '1gb_fd', '10gb_fd', copper, fiber, autoneg, pause, pause_asym].
ofp_packet_in_reason(0) -> no_match;
ofp_packet_in_reason(1) -> action;
ofp_packet_in_reason(no_match) -> 0;
ofp_packet_in_reason(action) -> 1;
ofp_packet_in_reason(_) -> error.
ofp_config_flags(0) -> frag_normal;
ofp_config_flags(1) -> frag_drop;
ofp_config_flags(2) -> frag_reasm;
ofp_config_flags(3) -> frag_mask;
ofp_config_flags(frag_normal) -> 0;
ofp_config_flags(frag_drop) -> 1;
ofp_config_flags(frag_reasm) -> 2;
ofp_config_flags(frag_mask) -> 3;
ofp_config_flags(_) -> error.
ofp_flow_mod_command(0) -> add;
ofp_flow_mod_command(1) -> modify;
ofp_flow_mod_command(2) -> modify_strict;
ofp_flow_mod_command(3) -> delete;
ofp_flow_mod_command(4) -> delete_strict;
ofp_flow_mod_command(add) -> 0;
ofp_flow_mod_command(modify) -> 1;
ofp_flow_mod_command(modify_strict) -> 2;
ofp_flow_mod_command(delete) -> 3;
ofp_flow_mod_command(delete_strict) -> 4;
ofp_flow_mod_command(X) when is_integer(X) -> X;
ofp_flow_mod_command(_) -> error.
ofp_flow_mod_flags() ->
[send_flow_rem, check_overlap, emerg].
-spec ofp_port(non_neg_integer()) -> ofp_port_name() | non_neg_integer();
(ofp_port_name()) -> non_neg_integer().
%% Port numbering. Physical ports are numbered starting from 1.
ofp_port(16#fff8) -> in_port;
ofp_port(16#fff9) -> table;
ofp_port(16#fffa) -> normal;
ofp_port(16#fffb) -> flood;
ofp_port(16#fffc) -> all;
ofp_port(16#fffd) -> controller;
ofp_port(16#fffe) -> local;
ofp_port(16#ffff) -> none;
ofp_port(X) when is_integer(X) -> X;
ofp_port(in_port) -> 16#fff8;
ofp_port(table) -> 16#fff9;
ofp_port(normal) -> 16#fffa;
ofp_port(flood) -> 16#fffb;
ofp_port(all) -> 16#fffc;
ofp_port(controller) -> 16#fffd;
ofp_port(local) -> 16#fffe;
ofp_port(none) -> 16#ffff.
ofp_table(16#fe) -> emergency;
ofp_table(16#ff) -> all;
ofp_table(X) when is_integer(X) -> X;
ofp_table(emergency) -> 16#fe;
ofp_table(all) -> 16#ff.
ofp_queue(16#ffff) -> all;
ofp_queue(X) when is_integer(X) -> X;
ofp_queue(all) -> 16#ffff.
ofp_flow_removed_reason(0) -> idle_timeout;
ofp_flow_removed_reason(1) -> hard_timeout;
ofp_flow_removed_reason(2) -> delete;
ofp_flow_removed_reason(X) when is_integer(X) -> X;
ofp_flow_removed_reason(idle_timeout) -> 0;
ofp_flow_removed_reason(hard_timeout) -> 1;
ofp_flow_removed_reason(delete) -> 2.
ofp_port_reason(0) -> add;
ofp_port_reason(1) -> delete;
ofp_port_reason(2) -> modify;
ofp_port_reason(X) when is_integer(X) -> X;
ofp_port_reason(add) -> 0;
ofp_port_reason(delete) -> 1;
ofp_port_reason(modify) -> 2.
ofp_stats_type(0) -> desc;
ofp_stats_type(1) -> flow;
ofp_stats_type(2) -> aggregate;
ofp_stats_type(3) -> table;
ofp_stats_type(4) -> port;
ofp_stats_type(5) -> queue;
ofp_stats_type(16#ffff) -> vendor;
ofp_stats_type(X) when is_integer(X) -> X;
ofp_stats_type(desc) -> 0;
ofp_stats_type(flow) -> 1;
ofp_stats_type(aggregate) -> 2;
ofp_stats_type(table) -> 3;
ofp_stats_type(port) -> 4;
ofp_stats_type(queue) -> 5;
ofp_stats_type(vendor) -> 16#ffff.
ofp_queue_properties(0) -> none;
ofp_queue_properties(1) -> min_rate;
ofp_queue_properties(none) -> 0;
ofp_queue_properties(min_rate) -> 1.
ofp_vendor_stats_type({nicira, 0}) -> nxst_flow;
ofp_vendor_stats_type({nicira, 1}) -> nxst_aggregate;
ofp_vendor_stats_type(nxst_flow) -> {nicira, 0};
ofp_vendor_stats_type(nxst_aggregate) -> {nicira, 1}.
-spec of_vendor_ext(of_vendor_ext()) -> {atom(), non_neg_integer()};
({atom(), non_neg_integer()}) -> of_vendor_ext().
of_vendor_ext({nicira, 10}) -> nxt_role_request;
of_vendor_ext({nicira, 11}) -> nxt_role_reply;
of_vendor_ext({nicira, 12}) -> nxt_set_flow_format;
of_vendor_ext({nicira, 13}) -> nxt_flow_mod;
of_vendor_ext({nicira, 14}) -> nxt_flow_removed;
of_vendor_ext({nicira, 15}) -> nxt_flow_mod_table_id;
of_vendor_ext(nxt_role_request) -> {nicira, 10};
of_vendor_ext(nxt_role_reply) -> {nicira, 11};
of_vendor_ext(nxt_set_flow_format) -> {nicira, 12};
of_vendor_ext(nxt_flow_mod) -> {nicira, 13};
of_vendor_ext(nxt_flow_removed) -> {nicira, 14};
of_vendor_ext(nxt_flow_mod_table_id) -> {nicira, 15}.
nxt_role(0) -> other;
nxt_role(1) -> master;
nxt_role(2) -> slave;
nxt_role(X) when is_integer(X) -> X;
nxt_role(other) -> 0;
nxt_role(master) -> 1;
nxt_role(slave) -> 2.
nxt_action(0) -> nxast_snat__obsolete;
nxt_action(1) -> nxast_resubmit;
nxt_action(2) -> nxast_set_tunnel;
nxt_action(3) -> nxast_drop_spoofed_arp__obsolete;
nxt_action(4) -> nxast_set_queue;
nxt_action(5) -> nxast_pop_queue;
nxt_action(6) -> nxast_reg_move;
nxt_action(7) -> nxast_reg_load;
nxt_action(8) -> nxast_note;
nxt_action(9) -> nxast_set_tunnel64;
nxt_action(10) -> nxast_multipath;
nxt_action(11) -> nxast_autopath;
nxt_action(X) when is_integer(X) -> X;
nxt_action(nxast_snat__obsolete) -> 0; %% No longer used.
nxt_action(nxast_resubmit) -> 1; %% struct nx_action_resubmit
nxt_action(nxast_set_tunnel) -> 2; %% struct nx_action_set_tunnel
nxt_action(nxast_drop_spoofed_arp__obsolete) -> 3;
nxt_action(nxast_set_queue) -> 4; %% struct nx_action_set_queue
nxt_action(nxast_pop_queue) -> 5; %% struct nx_action_pop_queue
nxt_action(nxast_reg_move) -> 6; %% struct nx_action_reg_move
nxt_action(nxast_reg_load) -> 7; %% struct nx_action_reg_load
nxt_action(nxast_note) -> 8; %% struct nx_action_note
nxt_action(nxast_set_tunnel64) -> 9; %% struct nx_action_set_tunnel64
nxt_action(nxast_multipath) -> 10; %% struct nx_action_multipath
nxt_action(nxast_autopath) -> 11. %% struct nx_action_autopath
protocol(NwProto)
when is_atom(NwProto) ->
gen_socket:protocol(NwProto);
protocol(NwProto) ->
NwProto.
-spec not_impl() -> no_return().
not_impl() ->
throw(not_implemented_yet).
%%%===================================================================
%%% Decode
%%%===================================================================
decode_nx_matches(<< Header:4/binary, Rest/binary>>, Acc) ->
H = nxm_header(Header),
<<_Vendor:16, _Field:7, Mult:1, Length:8>> = Header,
case Mult of
0 ->
<<Value:Length/binary, Next/binary>> = Rest,
decode_nx_matches(Next, [{H, Value}|Acc]);
1 ->
L = Length div 2,
<<Value:L/binary, Mask:L/binary, Next/binary>> = Rest,
decode_nx_matches(Next, [{H, {Value, Mask}}|Acc])
end;
decode_nx_matches(_, Acc) ->
lists:reverse(Acc).
decode_nx_matches(NxMatch) ->
decode_nx_matches(NxMatch, []).
decode_msg(error, << Type:16/integer, Code:16/integer, Data/binary >>) ->
Type1 = ofp_error_type(Type),
Code1 = ofp_error_code_type(Type1, Code),
Error = {Type1, Code1},
#ofp_error{error = Error, data = Data};
decode_msg(vendor, << Vendor:32/integer, Cmd:32/integer, Data/binary >>) ->
decode_msg(of_vendor_ext({vendor(Vendor), Cmd}), Data);
decode_msg(features_reply, <<DataPathId:64/integer, NBuffers:32/integer, NTables:8/integer, Pad:3/bytes,
Capabilities:32/integer, Actions:32/integer, Ports/binary>>) ->
lager:debug("DataPathId: ~p, NBuffers: ~p, NTables: ~p, Pad: ~p, Capabilities: ~p, Actions: ~p, Ports: ~p",
[DataPathId, NBuffers, NTables, Pad, Capabilities, Actions, Ports]),
#ofp_switch_features{datapath_id = DataPathId,
n_buffers = NBuffers,
n_tables = NTables,
capabilities = dec_flags(ofp_capabilities(), Capabilities),
actions = dec_flags(ofp_action_type(), Actions),
ports = decode_phy_ports(Ports)};
decode_msg(get_config_reply, <<Flags:16/integer, MissSendLen:16/integer>>) ->
#ofp_switch_config{flags = ofp_config_flags(Flags), miss_send_len = MissSendLen};
decode_msg(set_config, <<Flags:16/integer, MissSendLen:16/integer>>) ->
#ofp_switch_config{flags = ofp_config_flags(Flags), miss_send_len = MissSendLen};
decode_msg(packet_in, <<BufferId:32/integer, TotalLen:16/integer, InPort:16/integer, Reason:8/integer, _Pad:1/binary, Data/binary>>) ->
#ofp_packet_in{buffer_id = BufferId, total_len = TotalLen, in_port = ofp_port(InPort), reason = ofp_packet_in_reason(Reason), data = Data};
decode_msg(flow_removed, <<Match:40/bytes, Cookie:64/integer, Priority:16/integer, Reason:8/integer, _Pad1:1/bytes,
DurationSec:32/integer, DurationNSec:32/integer, IdleTimeout:16/integer, _Pad2:2/bytes,
PacketCount:64/integer, ByteCount:64/integer>>) ->
#ofp_flow_removed{match = decode_ofp_match(Match), cookie = Cookie, priority = Priority, reason = ofp_flow_removed_reason(Reason),
duration = {DurationSec, DurationNSec}, idle_timeout = IdleTimeout, packet_count = PacketCount, byte_count = ByteCount};
decode_msg(port_status, <<Reason:8/integer, _Pad:7/bytes, PhyPort/binary>>) ->
#ofp_port_status{reason = ofp_port_reason(Reason),
port = decode_phy_port(PhyPort)};
decode_msg(packet_out, <<BufferId:32/integer, InPort:16/integer, ActionsLen:16/integer, Actions:ActionsLen/bytes, Data/binary>>) ->
#ofp_packet_out{buffer_id = BufferId, in_port = ofp_port(InPort), actions = decode_actions(Actions), data = Data};
decode_msg(flow_mod, <<Match:40/bytes, Cookie:64/integer, Command:16/integer, IdleTimeout:16/integer, HardTimeout:16/integer,
Priority:16/integer, BufferId:32/integer, OutPort:16/integer, Flags:16/integer, Actions/binary>>) ->
#ofp_flow_mod{match = decode_ofp_match(Match), cookie = Cookie, command = ofp_flow_mod_command(Command),
idle_timeout = IdleTimeout, hard_timeout = HardTimeout,
priority = Priority, buffer_id = BufferId,
out_port = ofp_port(OutPort), flags = dec_flags(ofp_flow_mod_flags(), Flags), actions = decode_actions(Actions)};
decode_msg(port_mod, <<PortNo:16/integer, HwAddr:6/bytes, Config:32/integer, Mask:32/integer, Advertise:32/integer, _Pad:4/bytes>>) ->
#ofp_port_mod{port_no = PortNo, hw_addr = HwAddr,
config = dec_flags(ofp_port_config(), Config),
mask = dec_flags(ofp_port_config(), Mask),
advertise = dec_flags(ofp_port_features(), Advertise)};
decode_msg(stats_request, <<Type:16/integer, _Flags:16/integer, Msg/binary>>) ->
decode_stats_request(ofp_stats_type(Type), Msg);
decode_msg(stats_reply, <<Type:16/integer, _Flags:16/integer, Msg/binary>>) ->
decode_stats_reply(ofp_stats_type(Type), [], Msg);
decode_msg(queue_get_config_request, <<Port:16/integer, _Pad:2/bytes>>) ->
#ofp_queue_get_config_request{port = ofp_port(Port)};
decode_msg(ofp_queue_get_config_reply, <<Port:16/integer, _Pad:6/bytes, Queues/binary>>) ->
#ofp_queue_get_config_reply{port = ofp_port(Port), queues = decode_queues(Queues)};
%% Nicira Extensions
decode_msg(nxt_flow_mod_table_id, <<Set:8/integer>>) ->
#nxt_flow_mod_table_id{set = bool(Set)};
decode_msg(nxt_role_request, <<Role:32/integer>>) ->
#nxt_role_request{role = nxt_role(Role)};
decode_msg(nxt_flow_mod, <<Cookie:64/integer, Command:16/integer, IdleTimeout:16/integer, HardTimeout:16/integer,
Priority:16/integer, BufferId:32/integer, OutPort:16/integer, Flags:16/integer,
NxMatchLen:16/integer, 0:48, NxPayload/binary>>) ->
PadLen = pad_length(8, NxMatchLen),
<<NxMatch:NxMatchLen/bytes, _Pad:PadLen/bytes, Actions/binary>> = NxPayload,
#nx_flow_mod{cookie = Cookie, command = ofp_flow_mod_command(Command),
idle_timeout = IdleTimeout, hard_timeout = HardTimeout,
priority = Priority, buffer_id = BufferId,
out_port = ofp_port(OutPort), flags = dec_flags(ofp_flow_mod_flags(), Flags), nx_match = decode_nx_matches(NxMatch), actions = decode_actions(Actions)};
decode_msg(_, Msg) ->
Msg.
-spec decode_ofp_match(Match :: binary()) -> #ofp_match{}.
decode_ofp_match(<<Wildcards:32/integer, InPort:16/integer,
DlSrc:6/binary, DlDst:6/binary, DlVlan:16/integer, DlVlanPcp:8/integer,
_Pad1:1/bytes,
DlType:16/integer, NwTos:8/integer, NwProto:8/integer, _Pad2:2/bytes,
NwSrc:4/bytes, NwDst:4/bytes, TpSrc:16/integer, TpDst:16/integer>>) ->
lager:debug("DlType: ~w, NwTos: ~w", [DlType, NwTos]),
#ofp_match{wildcards = Wildcards, in_port = ofp_port(InPort),
dl_src = DlSrc, dl_dst = DlDst, dl_vlan = DlVlan, dl_vlan_pcp = DlVlanPcp, dl_type = eth_type(DlType),
nw_tos = NwTos, nw_proto = protocol(NwProto), nw_src = NwSrc, nw_dst = NwDst,
tp_src = TpSrc, tp_dst = TpDst}.
decode_nx_action(nxast_resubmit, << InPort:16, _/binary >>) ->
#nx_action_resubmit{in_port = ofp_port(InPort)};
decode_nx_action(nxast_set_tunnel, << 0:16, TunId:32 >>) ->
#nx_action_set_tunnel{tun_id = TunId};
decode_nx_action(nxast_set_queue, << 0:16, QueueId:32 >>) ->
#nx_action_set_queue{queue_id = QueueId};
decode_nx_action(nxast_pop_queue, << 0:48 >>) ->
#nx_action_pop_queue{};
decode_nx_action(nxast_reg_move, << Nbits:16, SrcOfs:16, DstOfs:16, Src:4/binary, Dst:4/binary>>) ->
#nx_action_reg_move{n_bits = Nbits, src_ofs = SrcOfs, dst_ofs = DstOfs, src = nxm_header(Src), dst = nxm_header(Dst)};
decode_nx_action(nxast_reg_load, << Ofs:10, Nbits:6, Dst:4/binary, RawValue/binary >>) ->
<<_:16, _:7, _:1, ValLen:8, _/binary>> = Dst,
<<Value:ValLen/binary, _/binary>> = RawValue,
#nx_action_reg_load{ofs = Ofs, nbits = Nbits, dst = nxm_header(Dst), value = Value};
decode_nx_action(nxast_note, << Note/binary >>) ->
#nx_action_note{note = Note};
decode_nx_action(nxast_set_tunnel64, << 0:48, TunId:64 >>) ->
#nx_action_set_tunnel64{tun_id = TunId}.
%%#decode_nx_action(nxast_multipath) ->
%%decode_nx_action(nxast_autopath) ->
decode_vendor_action(nicira, <<Action:16, Msg/binary>>) ->
decode_nx_action(nxt_action(Action), Msg);
decode_vendor_action(Vendor, Msg) ->
#ofp_action_vendor{vendor = Vendor, msg = Msg}.
-spec decode_action(Type :: non_neg_integer(), Length :: non_neg_integer(), binary()) -> ofp_action().
decode_action(0, 4, <<Port:16/integer, MaxLen:16/integer>>) ->
#ofp_action_output{port = ofp_port(Port), max_len = MaxLen};
decode_action(1, 4, <<VlanVid:16/integer, _:16>>) ->
#ofp_action_vlan_vid{vlan_vid = VlanVid};
decode_action(2, 4, <<VlanPcp:8/integer, 0:24>>) ->
#ofp_action_vlan_pcp{vlan_pcp = VlanPcp};
decode_action(3, 4, <<_:32>>) ->
#ofp_action_strip_vlan{};
decode_action(4, 12, <<Addr:6/binary, _:48>>) ->
#ofp_action_dl_addr{type = src, dl_addr = Addr};
decode_action(5, 12, <<Addr:6/binary, _:48>>) ->
#ofp_action_dl_addr{type = dst, dl_addr = Addr};
decode_action(6, 4, <<Addr:4/binary>>) ->
#ofp_action_nw_addr{type = src, nw_addr = Addr};
decode_action(7, 4, <<Addr:4/binary>>) ->
#ofp_action_nw_addr{type = dst, nw_addr = Addr};
decode_action(8, 4, <<NwTos:8/integer, _:24>>) ->
#ofp_action_nw_tos{nw_tos = NwTos};
decode_action(9, 4, <<TpPort:16/integer, _:16>>) ->
#ofp_action_tp_port{type = src, tp_port = TpPort};
decode_action(10, 4, <<TpPort:16/integer, _:16>>) ->
#ofp_action_tp_port{type = dst, tp_port = TpPort};
decode_action(11, 12, <<Port:16/integer, _:48, QueueId:32/integer>>) ->
#ofp_action_enqueue{port = ofp_port(Port), queue_id = QueueId};
decode_action(16#FFFF, Length, <<Vendor:32, Msg/binary>> = PayLoad)
when Length == size(PayLoad) ->
decode_vendor_action(vendor(Vendor), Msg);
decode_action(Type, Length, Msg)
when Length == size(Msg) ->
{Type, Msg}.
decode_actions(<<>>, Acc) ->
lists:reverse(Acc);
decode_actions(<<Type:16/integer, Length:16/integer, Rest/binary>>, Acc) ->
Len = Length - 4,
<<Msg:Len/bytes, Next/binary>> = Rest,
decode_actions(Next, [decode_action(Type, Len, Msg)|Acc]).
decode_actions(Msg) ->
decode_actions(Msg, []).
decode_phy_port(<<PortNo:16/integer, HwAddr:6/binary, Name:16/binary,
Config:32/integer, State:32/integer,
Curr:32/integer, Advertised:32/integer,
Supported:32/integer, Peer:32/integer>>) ->
#ofp_phy_port{port_no = ofp_port(PortNo),
hw_addr = HwAddr,
name = decode_binstring(Name),
config = dec_flags(ofp_port_config(), Config),
state = dec_flags(ofp_port_state(), State),
curr = dec_flags(ofp_port_features(), Curr),
advertised = dec_flags(ofp_port_features(), Advertised),
supported = dec_flags(ofp_port_features(), Supported),
peer = dec_flags(ofp_port_features(), Peer)}.
decode_phy_ports(<<>>, Acc) ->
lists:reverse(Acc);
decode_phy_ports(<<Port:48/binary, Rest/binary>>, Acc) ->
decode_phy_ports(Rest, [decode_phy_port(Port)|Acc]).
decode_phy_ports(Msg) ->
decode_phy_ports(Msg, []).
decode_queue_prop(none, <<>>) ->
none;
decode_queue_prop(min_rate, <<Rate:16/integer, _Pad:6/bytes>>) ->
#ofp_queue_prop_min_rate{rate = Rate}.
decode_queue_props(<<>>, Acc) ->
lists:reverse(Acc);
decode_queue_props(<<Property:16/integer, Len:16/integer, _Pad:4/bytes, Data>>, Acc) ->
PropLen = Len - 8,
<<Prop:PropLen/bytes, Rest/binary>> = Data,
decode_queue_props(Rest, [decode_queue_prop(ofp_queue_properties(Property), Prop)|Acc]).
decode_queues(<<>>, Acc) ->
lists:reverse(Acc);
decode_queues(<<QueueId:32/integer, Len:16/integer, _Pad:2/bytes, Data/binary>>, Acc) ->
DescLen = Len - 8,
<<Desc:DescLen/bytes, Rest/binary>> = Data,
Properties = decode_queues(Rest, [decode_queue_props(Desc, [])|Acc]),
#ofp_packet_queue{queue_id = QueueId, properties = Properties}.
decode_queues(Queues) ->
decode_queues(Queues, []).
decode_binstring(Str) ->
[Name|_Rest] = binary:split(Str, <<0>>),
Name.
%% Stats Reques/Reply
decode_stats_request(desc, <<>>) ->
#ofp_desc_stats_request{};
decode_stats_request(flow, <<Match:40/bytes, TableId:8/integer, _Pad:1/binary, OutPort:16/integer>>) ->
#ofp_flow_stats_request{match = decode_ofp_match(Match), table_id = ofp_table(TableId), out_port = ofp_port(OutPort)};
decode_stats_request(aggregate, <<Match:40/bytes, TableId:8/integer, _Pad:1/binary, OutPort:16/integer>>) ->
#ofp_aggregate_stats_request{match = decode_ofp_match(Match), table_id = ofp_table(TableId), out_port = ofp_port(OutPort)};
decode_stats_request(table, <<>>) ->
#ofp_table_stats_request{};
decode_stats_request(port, <<Port:16/integer, _Pad:6/bytes>>) ->
#ofp_port_stats_request{port_no = ofp_port(Port)};
decode_stats_request(queue, <<Port:16/integer, _Pad:2/bytes, Queue:32/integer>>) ->
#ofp_queue_stats_request{port_no = ofp_port(Port), queue_id = ofp_queue(Queue)};
decode_stats_request(nxst_flow, <<OutPort:16/integer, NxMatchLen:16/integer, TableId:8/integer, _Pad1:3/bytes, More/binary>>) ->
PadLen = pad_length(8, NxMatchLen),
<<NxMatch:NxMatchLen/bytes, _Pad2:PadLen/bytes>> = More,
#ofp_nxst_flow_stats_request{out_port = ofp_port(OutPort), table_id = ofp_table(TableId), nx_match = decode_nx_matches(NxMatch)};
decode_stats_request(nxst_aggregate, <<OutPort:16/integer, NxMatchLen:16/integer, TableId:8/integer, _Pad1:3/bytes, More/binary>>) ->
PadLen = pad_length(8, NxMatchLen),
<<NxMatch:NxMatchLen/bytes, _Pad2:PadLen/bytes>> = More,
#ofp_nxst_aggregate_stats_request{out_port = ofp_port(OutPort), table_id = ofp_table(TableId), nx_match = decode_nx_matches(NxMatch)};
decode_stats_request(vendor, <<Vendor:32/integer, Msg/binary>>) ->
decode_vendor_stats_request(vendor(Vendor), Msg).
decode_vendor_stats_request(nicira, <<SubType:32/integer, _Pad:4/bytes, Msg/binary>>) ->
decode_stats_request(ofp_vendor_stats_type({nicira, SubType}), Msg).
decode_stats_reply(_, Acc, <<>>) ->
lists:reverse(Acc);
decode_stats_reply(desc, Acc, <<MfrDesc:256/bytes, HwDesc:256/bytes, SwDesc:256/bytes,
SerialNum:32/bytes, DpDesc:256/bytes, Rest/binary>>) ->
R = #ofp_desc_stats{mfr_desc = decode_binstring(MfrDesc), hw_desc = decode_binstring(HwDesc),
sw_desc = decode_binstring(SwDesc), serial_num = decode_binstring(SerialNum),
dp_desc = decode_binstring(DpDesc)},
decode_stats_reply(desc, [R|Acc], Rest);
decode_stats_reply(flow, Acc, <<Length:16/integer, TableId:8/integer, _Pad1:1/binary, Match:40/bytes, Sec:32/integer, NSec:32/integer,
Priority:16/integer, IdleTimeout:16/integer, HardTimeout:16/integer, _Pad2:6/bytes,
Cookie:64/integer, PacketCount:64/integer, ByteCount:64/integer, More/binary>>) ->
ActionLength = Length - 88,
<<Actions:ActionLength/bytes, Rest/binary>> = More,
R = #ofp_flow_stats{table_id = ofp_table(TableId), match = decode_ofp_match(Match),
duration = {Sec, NSec}, priority = Priority,
idle_timeout = IdleTimeout, hard_timeout = HardTimeout, cookie = Cookie,
packet_count = PacketCount, byte_count = ByteCount, actions = decode_actions(Actions)},
decode_stats_reply(flow, [R|Acc], Rest);
decode_stats_reply(aggregate, Acc, <<PacketCount:64/integer, ByteCount:64/integer, FlowCount:32/integer, _Pad:4/bytes, Rest/binary>>) ->
R = #ofp_aggregate_stats{packet_count = PacketCount, byte_count = ByteCount,
flow_count = FlowCount},
decode_stats_reply(aggregate, [R|Acc], Rest);
decode_stats_reply(table, Acc, <<TableId:8/integer, _Pad:3/bytes, Name:32/bytes, Wildcards:32/integer, MaxEntries:32/integer,
ActiveCount:32/integer, LookupCount:64/integer, MatchedCount:64/integer, Rest/binary>>) ->
R = #ofp_table_stats{table_id = ofp_table(TableId), name = decode_binstring(Name), wildcards = Wildcards, max_entries = MaxEntries,
active_count = ActiveCount, lookup_count = LookupCount, matched_count = MatchedCount},
decode_stats_reply(table, [R|Acc], Rest);
decode_stats_reply(port, Acc, <<Port:16/integer, _Pad:6/bytes, RxPackets:64/integer, TxPackets:64/integer,
RxBytes:64/integer, TxBytes:64/integer, RxDropped:64/integer, TxDropped:64/integer,
RxErrors:64/integer, TxErrors:64/integer, RxFrameErr:64/integer, RxOverErr:64/integer,
RxCrcErr:64/integer, Collisions:64/integer, Rest/binary>>) ->
R = #ofp_port_stats{port_no = ofp_port(Port), rx_packets = RxPackets, tx_packets = TxPackets,
rx_bytes = RxBytes, tx_bytes = TxBytes, rx_dropped = RxDropped,
tx_dropped = TxDropped, rx_errors = RxErrors, tx_errors = TxErrors,
rx_frame_err = RxFrameErr, rx_over_err = RxOverErr,
rx_crc_err = RxCrcErr, collisions = Collisions},
decode_stats_reply(port, [R|Acc], Rest);
decode_stats_reply(queue, Acc, <<Port:16/integer, _Pad:2/bytes, Queue:32/integer, TxBytes:64/integer,
TxPackets:64/integer, TxErrors:64/integer, Rest/binary>>) ->
R = #ofp_queue_stats{port_no = ofp_port(Port), queue_id = ofp_queue(Queue),
tx_bytes = TxBytes, tx_packets = TxPackets, tx_errors = TxErrors},
decode_stats_reply(queue, [R|Acc], Rest);
decode_stats_reply(nxst_flow, Acc, <<Length:16/integer, TableId:8/integer, _Pad1:1/binary, Sec:32/integer, NSec:32/integer,
Priority:16/integer, IdleTimeout:16/integer, HardTimeout:16/integer, NxMatchLen:16/integer,
_Pad2:4/bytes, Cookie:64/integer, PacketCount:64/integer, ByteCount:64/integer, More/binary>>) ->
PadLen = pad_length(8, NxMatchLen),
ActionLength = Length - 48 - NxMatchLen - PadLen,
<<NxMatch:NxMatchLen/bytes, _Pad3:PadLen/bytes, Actions:ActionLength/bytes, Rest/binary>> = More,
R = #ofp_nxst_flow_stats{table_id = ofp_table(TableId),
duration = {Sec, NSec}, priority = Priority,
idle_timeout = IdleTimeout, hard_timeout = HardTimeout, cookie = Cookie,
packet_count = PacketCount, byte_count = ByteCount,
nx_match = decode_nx_matches(NxMatch),
actions = decode_actions(Actions)},
decode_stats_reply(nxst_flow, [R|Acc], Rest);
decode_stats_reply(nxst_aggregate, Acc, <<PacketCount:64/integer, ByteCount:64/integer, FlowCount:32/integer, _Pad:4/bytes, Rest/binary>>) ->
R = #ofp_nxst_aggregate_stats{packet_count = PacketCount, byte_count = ByteCount,
flow_count = FlowCount},
decode_stats_reply(nxst_aggregate, [R|Acc], Rest);
decode_stats_reply(vendor, Acc, <<Vendor:32/integer, Msg/binary>>) ->
decode_vendor_stats(vendor(Vendor), Acc, Msg).
decode_vendor_stats(nicira, Acc, <<SubType:32/integer, _Pad:4/bytes, Msg/binary>>) ->
decode_stats_reply(ofp_vendor_stats_type({nicira, SubType}), Acc, Msg).
%%%===================================================================
%%% Encode
%%%===================================================================
-spec encode_ovs_vendor({Vendor :: atom(), Cmd :: non_neg_integer()}, binary()) -> binary();
({Vendor :: non_neg_integer(), Cmd :: non_neg_integer()}, binary()) -> binary();
(Cmd :: of_vendor_ext(), binary()) -> binary().
encode_ovs_vendor({Vendor, Cmd}, Data)
when is_atom(Vendor) ->
encode_ovs_vendor({vendor(Vendor), Cmd}, Data);
encode_ovs_vendor({Vendor, Cmd}, Data) ->
<< Vendor:32, Cmd:32, Data/binary >>;
encode_ovs_vendor(Cmd, Data) ->
encode_ovs_vendor(of_vendor_ext(Cmd), Data).
-spec encode_ofp_switch_features(integer(), integer(), integer(), integer(), integer(), binary()) -> binary().
encode_ofp_switch_features(DataPathId, NBuffers, NTables, Capabilities, Actions, Ports) ->
<<DataPathId:64, NBuffers:32, NTables:8, 0:24, Capabilities:32, Actions:32, Ports/binary>>.
-spec encode_ofp_error(non_neg_integer(), non_neg_integer(), binary()) -> binary().
encode_ofp_error(Type, Code, Data) ->
<<Type:16/integer, Code:16/integer, Data/binary>>.
-spec encode_phy_port(integer(), binary(), binary(), integer(), integer(), integer(), integer(), integer(), integer()) -> binary().
encode_phy_port(PortNo, HwAddr, Name, Config, State,Curr, Advertised, Supported, Peer) ->
Name0 = pad_to(16, Name),
<<PortNo:16, HwAddr:6/bytes, Name0:16/bytes, Config:32, State:32, Curr:32, Advertised:32, Supported:32, Peer:32>>.
encode_phy_port(#ofp_phy_port{port_no = PortNo,
hw_addr = HwAddr,
name = Name,
config = Config,
state = State,
curr = Curr,
advertised = Advertised,
supported = Supported,
peer = Peer}) ->
encode_phy_port(ofp_port(PortNo), HwAddr, Name,
enc_flags(ofp_port_config(), Config),
enc_flags(ofp_port_state(), State),
enc_flags(ofp_port_features(), Curr),
enc_flags(ofp_port_features(), Advertised),
enc_flags(ofp_port_features(), Supported),
enc_flags(ofp_port_features(), Peer)).
encode_phy_ports(Ports) ->
<< << (encode_phy_port(P))/binary >> || P <- Ports >>.
encode_ofp_port_status(Reason, Port) ->
Reason0 = ofp_port_reason(Reason),
<<Reason0:8, 0:56, Port/binary>>.
-spec encode_queue_get_config_request(integer()) -> binary().
encode_queue_get_config_request(Port) ->
<<Port:16>>.
encode_ofp_queue_prop(none) ->
<<>>;
encode_ofp_queue_prop(#ofp_queue_prop_min_rate{rate = Rate}) ->
<<Rate:16>>.
encode_ofp_packet_queue(#ofp_packet_queue{queue_id = QueueId, properties = Properties}) ->
Props = << << (pad_to(8, encode_ofp_queue_prop(P)))/binary >> || P <- Properties >>,
Len = size(Props) + 8,
<<QueueId:32, Len:16, 0:16, Props/binary>>.
-spec encode_ofp_packet_queues([#ofp_packet_queue{}]) -> binary().
encode_ofp_packet_queues(Queues) ->
<< << (encode_ofp_packet_queue(Q))/binary >> || Q <- Queues >>.
-spec encode_ofp_queue_get_config_reply(integer(), binary()) -> binary().
encode_ofp_queue_get_config_reply(Port, Queues) ->
<<Port:16, 0:48, Queues/binary>>.
-spec encode_ofp_switch_config(integer(), integer()) -> binary().
encode_ofp_switch_config(Flags, MissSendLen) ->
<<Flags:16, MissSendLen:16>>.
-spec bool(boolean()) -> 0 | 1;
(non_neg_integer()) -> boolean().
bool(true) -> 1;
bool(false) -> 0;
bool(0) -> false;
bool(_) -> true.
int_maybe_undefined(X) when is_integer(X) -> X;
int_maybe_undefined(undefined) -> 0.
bin_maybe_undefined(X, Len) when is_binary(X) -> pad_to(Len, X);
bin_maybe_undefined(undefined, Len) -> pad_to(Len, <<0>>).
bin_fixed_length(X, Len) when size(X) > Len -> binary_part(X, {0, Len});
bin_fixed_length(X, Len) -> bin_maybe_undefined(X, Len).
-spec encode_ofp_match(integer(), ofp_port(), binary(), binary(), integer(),
integer(), integer()|atom(), integer(), integer()|atom(),
binary(), binary(), integer(), integer()) -> binary().
encode_ofp_match(Wildcards, InPort, DlSrc, DlDst, DlVlan, DlVlanPcp, DlType,
NwTos, NwProto, NwSrc, NwDst, TpSrc, TpDst) when DlType == arp ->
InPort0 = ofp_port(InPort),
DlType0 = eth_type(DlType),
NwProto0 = int_maybe_undefined(flower_arp:op(NwProto)),
NwSrc0 = bin_maybe_undefined(NwSrc, 4),
NwDst0 = bin_maybe_undefined(NwDst, 4),
TpSrc0 = int_maybe_undefined(TpSrc),
TpDst0 = int_maybe_undefined(TpDst),
<<Wildcards:32, InPort0:16, DlSrc:6/binary, DlDst:6/binary, DlVlan:16, DlVlanPcp:8,
0:8, DlType0:16, NwTos:8, NwProto0:8, 0:16, NwSrc0:4/binary, NwDst0:4/binary, TpSrc0:16, TpDst0:16>>;
encode_ofp_match(Wildcards, InPort, DlSrc, DlDst, DlVlan, DlVlanPcp, DlType,
NwTos, NwProto, NwSrc, NwDst, TpSrc, TpDst) ->
InPort0 = ofp_port(InPort),
DlType0 = eth_type(DlType),
NwProto0 = int_maybe_undefined(protocol(NwProto)),
NwSrc0 = bin_maybe_undefined(NwSrc, 4),
NwDst0 = bin_maybe_undefined(NwDst, 4),
TpSrc0 = int_maybe_undefined(TpSrc),
TpDst0 = int_maybe_undefined(TpDst),
<<Wildcards:32, InPort0:16, DlSrc:6/binary, DlDst:6/binary, DlVlan:16, DlVlanPcp:8,
0:8, DlType0:16, NwTos:8, NwProto0:8, 0:16, NwSrc0:4/binary, NwDst0:4/binary, TpSrc0:16, TpDst0:16>>.
-spec encode_ofs_action(int16(), binary()) -> binary().
encode_ofs_action(Type, Data) ->
Len = 4 + size(Data),
<<Type:16, Len:16, Data/binary>>.
-spec encode_ofs_action_output(ofp_port(), int16()) -> binary().
encode_ofs_action_output(Port, MaxLen) ->
Port0 = ofp_port(Port),
encode_ofs_action(0, <<Port0:16, MaxLen:16>>).
-spec encode_ofs_action_vlan_vid(int16()) -> binary().
encode_ofs_action_vlan_vid(VlanVid) ->
encode_ofs_action(1, <<VlanVid:16, 0:16>>).
-spec encode_ofs_action_vlan_pcp(int8()) -> binary().
encode_ofs_action_vlan_pcp(VlanPcp) ->
encode_ofs_action(2, <<VlanPcp:8, 0:24>>).
-spec encode_ofs_action_strip_vlan() -> binary().
encode_ofs_action_strip_vlan() ->
encode_ofs_action(3, <<0:32>>).
-spec encode_ofs_action_dl_addr(ofp_addr_type(), binary()) -> binary().
encode_ofs_action_dl_addr(src, Addr) ->
encode_ofs_action(4, <<Addr:6/bytes, 0:48>>);
encode_ofs_action_dl_addr(dst, Addr) ->
encode_ofs_action(5, <<Addr:6/bytes, 0:48>>).
-spec encode_ofs_action_nw_addr(ofp_addr_type(), binary()) -> binary().
encode_ofs_action_nw_addr(src, Addr) ->
encode_ofs_action(6, <<Addr:4/bytes>>);
encode_ofs_action_nw_addr(dst, Addr) ->
encode_ofs_action(7, <<Addr:4/bytes>>).
-spec encode_ofs_action_nw_tos(int8()) -> binary().
encode_ofs_action_nw_tos(NwTos) ->
encode_ofs_action(8, <<NwTos:8, 0:24>>).
-spec encode_ofs_action_tp_addr(ofp_addr_type(), int16()) -> binary().
encode_ofs_action_tp_addr(src, TpPort) ->
encode_ofs_action(9, <<TpPort:16, 0:16>>);
encode_ofs_action_tp_addr(dst, TpPort) ->
encode_ofs_action(10, <<TpPort:16, 0:16>>).
-spec encode_ofs_action_enqueue(ofp_port(), int32()) -> binary().
encode_ofs_action_enqueue(Port, QueueId) ->
Port0 = ofp_port(Port),
encode_ofs_action(11, <<Port0:16, 0:48, QueueId:32>>).
-spec encode_ofs_action_vendor(int32(), binary()) -> binary().
encode_ofs_action_vendor(Vendor, Msg) ->
Data = pad_to(8, Msg),
encode_ofs_action(16#FFFF, <<Vendor:32, Data/binary>>).
-spec encode_ofp_flow_mod(Match :: binary(), Cookie :: integer(), Command :: ofp_command() | non_neg_integer(),
IdleTimeout :: integer(), HardTimeout:: integer(),
Priority :: integer(), BufferId :: integer(), OutPort :: ofp_port(),
Flags :: integer(), Actions :: binary()|list(binary)) -> binary().
encode_ofp_flow_mod(Match, Cookie, Command, IdleTimeout, HardTimeout, Priority,
BufferId, OutPort, Flags, Actions) when is_list(Actions) ->
encode_ofp_flow_mod(Match, Cookie, Command, IdleTimeout, HardTimeout, Priority,
BufferId, OutPort, Flags, list_to_binary(Actions));
encode_ofp_flow_mod(Match, Cookie, Command, IdleTimeout, HardTimeout, Priority,
BufferId, OutPort, Flags, Actions) ->
OutPort0 = ofp_port(OutPort),
Cmd = ofp_flow_mod_command(Command),
<<Match/binary, Cookie:64, Cmd:16, IdleTimeout:16, HardTimeout:16,
Priority:16, BufferId:32, OutPort0:16, Flags:16, Actions/binary>>.
-spec encode_ofp_flow_removed(binary(), integer(), integer(), integer()|atom(), {integer(), integer()}, integer(), integer(), integer()) -> binary().
encode_ofp_flow_removed(Match, Cookie, Priority, Reason, {DurationSec, DurationNSec}, IdleTimeout, PacketCount, ByteCount) when is_atom(Reason) ->
Reason0 = ofp_flow_removed_reason(Reason),
encode_ofp_flow_removed(Match, Cookie, Priority, Reason0, {DurationSec, DurationNSec}, IdleTimeout, PacketCount, ByteCount);
encode_ofp_flow_removed(Match, Cookie, Priority, Reason, {DurationSec, DurationNSec}, IdleTimeout, PacketCount, ByteCount) ->
<<Match/binary, Cookie:64, Priority:16, Reason:8, 0:8, DurationSec:32, DurationNSec:32, IdleTimeout:16, 0:16,
PacketCount:64, ByteCount:64>>.
-spec encode_ofp_packet_in(integer(), integer(), integer(), integer(), binary()) -> binary().
encode_ofp_packet_in(BufferId, TotalLen, InPort, Reason, Data) ->
<<BufferId:32, TotalLen:16, InPort:16, Reason:8, 0:8, Data/binary>>.
-spec encode_ofp_packet_out(integer(), integer()|atom(), binary(), list(binary())|binary()) -> binary().
encode_ofp_packet_out(BufferId, InPort, Actions, Data) when is_list(Actions) ->
encode_ofp_packet_out(BufferId, InPort, list_to_binary(Actions), Data);
encode_ofp_packet_out(BufferId, InPort, Actions, Data) ->
InPort0 = ofp_port(InPort),
<<BufferId:32, InPort0:16, (size(Actions)):16, Actions/binary, Data/binary>>.
-spec encode_ofp_port_mod(integer(), binary(), integer(), integer(), integer()) -> binary().