TCP/UDP协议中用到的各种header， SystemVerilog版

chat1

于 2016-01-31 16:00:59 发布

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分类专栏： TCP/UDP FPGA 文章标签： tcp ip udp header 结构体

本文链接：https://blog.youkuaiyun.com/chat1/article/details/50614912

整理了TCP/IP协议中用到的各种header，方便大家使用


package type_defs;
typedef logic [3:0]  u4_t;
typedef logic [7:0]  u8_t;
typedef logic [15:0] u16_t;
typedef logic [31:0] u32_t;
typedef logic [63:0] u64_t;


typedef struct packed {<span style="white-space:pre">	</span>//MAC头
u16_t padding;
logic [47:0] dst_addr;
logic [47:0] src_addr;
u16_t mac_type;
} mac_header_t;

typedef struct packed { //ARP头
    u16_t hardware_type;
    u16_t protocol_type;
    u8_t hardware_addr_len;
    u8_t protocol_addr_len;
    u16_t operation_type;
    logic [47:0] src_addr;
    u32_t src_ip_addr;
    logic [47:0] dst_addr;
    u32_t dst_ip_addr;
} arp_header_t;

parameter PROTO_ICMP = 8'd1,
PROTO_TCP = 8'd6,
PROTO_UDP = 8'd17;

typedef struct packed{ //IP头
    u4_t version;
    u4_t header_len;
    u8_t tos;
    u16_t len;
    u16_t ipid;
    logic reserved;
    logic b_no_fragment;
    logic [5:0] reserved1;
    u8_t ipoffset;
    u8_t ttl;
    u8_t proto;
    u16_t checksum;