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[/] [udp_ip_stack/] [trunk/] [rtl/] [vhdl/] [ipv4_types.vhd] - Blame information for rev 6

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Line No. Rev Author Line
1 2 pjf
--
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--
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--      Purpose: This package defines types for use in IPv4
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library IEEE;
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use IEEE.STD_LOGIC_1164.all;
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use work.axi.all;
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package ipv4_types is
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        constant IP_BC_ADDR             : std_logic_vector (31 downto 0) := x"ffffffff";
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        constant MAC_BC_ADDR            : std_logic_vector (47 downto 0) := x"ffffffffffff";
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        --------------
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        -- IPv4 TX --
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        --------------
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        -- coding for result in tx
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        constant IPTX_RESULT_NONE               : std_logic_vector (1 downto 0) := "00";
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        constant IPTX_RESULT_SENDING    : std_logic_vector (1 downto 0) := "01";
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        constant IPTX_RESULT_ERR                : std_logic_vector (1 downto 0) := "10";
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        constant IPTX_RESULT_SENT               : std_logic_vector (1 downto 0) := "11";
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        type ipv4_tx_header_type is record
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                protocol                                : std_logic_vector (7 downto 0);
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                data_length                     : STD_LOGIC_VECTOR (15 downto 0);                -- user data size, bytes
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                dst_ip_addr             : STD_LOGIC_VECTOR (31 downto 0);
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        end record;
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        type ipv4_tx_type is record
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                hdr                             : ipv4_tx_header_type;                                          -- header to tx
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                data                            : axi_out_type;                                                         -- tx axi bus
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        end record;
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        --------------
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        -- IPv4 RX --
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        --------------
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        -- coding for last_error_code in rx hdr
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        constant RX_EC_NONE             : std_logic_vector (3 downto 0) := x"0";
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        constant RX_EC_ET_ETH   : std_logic_vector (3 downto 0) := x"1"; -- early termination in ETH hdr phase
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        constant RX_EC_ET_IP    : std_logic_vector (3 downto 0) := x"2"; -- early termination in IP hdr phase
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        constant RX_EC_ET_USER  : std_logic_vector (3 downto 0) := x"3"; -- early termination in USER DATA phase
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        type ipv4_rx_header_type is record
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                is_valid                                : std_logic;
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                protocol                                : std_logic_vector (7 downto 0);
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                data_length                     : STD_LOGIC_VECTOR (15 downto 0);        -- user data size, bytes
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                src_ip_addr             : STD_LOGIC_VECTOR (31 downto 0);
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                num_frame_errors        : std_logic_vector (7 downto 0);
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                last_error_code : std_logic_vector (3 downto 0);         -- see RX_EC_xxx constants
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                is_broadcast            : std_logic;                                                            -- set if the msg received is a broadcast
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        end record;
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        type ipv4_rx_type is record
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                hdr                             : ipv4_rx_header_type;                                          -- header received
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                data                            : axi_in_type;                                                                  -- rx axi bus
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        end record;
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        ------------
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        -- UDP TX --
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        ------------
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        -- coding for result in tx
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        constant UDPTX_RESULT_NONE              : std_logic_vector (1 downto 0) := "00";
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        constant UDPTX_RESULT_SENDING   : std_logic_vector (1 downto 0) := "01";
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        constant UDPTX_RESULT_ERR                       : std_logic_vector (1 downto 0) := "10";
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        constant UDPTX_RESULT_SENT              : std_logic_vector (1 downto 0) := "11";
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        type udp_tx_header_type is record
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                dst_ip_addr             : STD_LOGIC_VECTOR (31 downto 0);
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                dst_port                                : STD_LOGIC_VECTOR (15 downto 0);
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                src_port                                : STD_LOGIC_VECTOR (15 downto 0);
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                data_length                     : STD_LOGIC_VECTOR (15 downto 0);        -- user data size, bytes
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                checksum                                : STD_LOGIC_VECTOR (15 downto 0);
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        end record;
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        type udp_tx_type is record
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                hdr                             : udp_tx_header_type;                                           -- header received
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                data                            : axi_out_type;                                                         -- tx axi bus
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        end record;
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        ------------
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        -- UDP RX --
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        ------------
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        type udp_rx_header_type is record
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                is_valid                                : std_logic;
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                src_ip_addr             : STD_LOGIC_VECTOR (31 downto 0);
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                src_port                                : STD_LOGIC_VECTOR (15 downto 0);
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                dst_port                                : STD_LOGIC_VECTOR (15 downto 0);
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                data_length                     : STD_LOGIC_VECTOR (15 downto 0);        -- user data size, bytes
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        end record;
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        type udp_rx_type is record
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                hdr                             : udp_rx_header_type;                                           -- header received
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                data                            : axi_in_type;                                                                  -- rx axi bus
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        end record;
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        type udp_addr_type is record
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                ip_addr                         : STD_LOGIC_VECTOR (31 downto 0);
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                port_num                        : STD_LOGIC_VECTOR (15 downto 0);
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        end record;
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end ipv4_types;

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