1/*2* These are the defined Ethernet Protocol ID's.3*/45#defineETH_P_LOOP 0x0060 /* Ethernet Loopback packet */6#defineETH_P_PUP 0x0200 /* Xerox PUP packet */7#defineETH_P_PUPAT 0x0201 /* Xerox PUP Addr Trans packet */8#defineETH_P_TSN 0x22F0 /* TSN (IEEE 1722) packet ...
u_int8_t th_x2:4; /* (unused) */ u_int8_t th_off:4; /* data offset */ # endif # if __BYTE_ORDER == __BIG_ENDIAN u_int8_t th_off:4; /* data offset */ u_int8_t th_x2:4; /* (unused) */ # endif u_int8_t th_flags; # define TH_FIN 0x01 # define TH_...
8. const struct tcphdr *th = tcp_hdr(skb); 9. int length = (th->doff * 4) - sizeof(struct tcphdr); /* 选项的总长度 */ 10. ptr = (const unsigned char *) (th + 1); /* 选项的起始地址 */ 11. opt_rx->saw_tstamp = 0; /* Saw TIMESTAMP on last packet */ 12. whil...
Cloud Studio代码运行 importstruct# 定义解包格式format_string='3s2i'# 打包数据data=struct.pack(format_string,b'abc',123,456)# 解析数据unpacked_data=struct.unpack(format_string,data)print(unpacked_data)# 输出:(b'abc', 123, 456) 在上面的示例中,使用'3s2i'定义了一个解包格式,表示一个长度为3...
static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) { /* 这里就是上文提到的vlan_tci的填充,这些信息都归属于子设备本身 */ if (veth->h_vlan_proto != vlan->vlan_proto || vlan->flags & VLAN_FLAG_REORDER_HDR) { ...
hdr_len;//writable header length of cloned skbunsignedinttruesize;//socket buffer(套接字缓存区的大小)atomic_t users;//对当前的struct sk_buff结构体的引用次数;__u32 priority;//这个struct sk_buff结构体的优先级sk_buff_data_t transport_header;//传输层头部的偏移量sk_buff_data_t network_...
struct sk_buff *nfct_reasm; #endif #ifdef CONFIG_BRIDGE_NETFILTER struct nf_bridge_info *nf_bridge; #endif __u32 nfmark; #endif /* CONFIG_NETFILTER */ 这些变量被netfilter使用(防火墙代码),内核编译选项是“Device Drivers->Networking support-> Networking options-> Network packet filtering”和两...
Just don't try too hard to make your C# declarations match the packet format exactly. You'd favor this: [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)] public class Header { //... } public class Packet { public Header Header; public byte[] VariableLengthData; }...
pppoe_hdr { ifdef CFG_LITTLEENDIAN u_int8_t ver :4; u_int8_t type : 4; # u_int8_t type: 4; u_int8_t ver 4; # u_int8_t code u_int16_t sid; _int16_ length; structpppoe_tag tag; }; #endif typedefstruct _mac_t { u_int_ mact_octet6]; } ...
maxdelayAVPacketAVPacket定义在avcodec 如下typedefstructAVPacket AVStream 基time base单位介绍时间戳的时间 解压缩包将被提交给用户。 可AV NOPTS VALUE如果没有存储在文件中。 分必须大于或等于DTS作为演示不能发生之前