📄 tcp_hdr.h
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/*server/ip/gen/tcp_hdr.h*/#ifndef __SERVER__IP__GEN__TCP_HDR_H__#define __SERVER__IP__GEN__TCP_HDR_H__typedef struct tcp_hdr{ tcpport_t th_srcport; tcpport_t th_dstport; u32_t th_seq_nr; u32_t th_ack_nr; u8_t th_data_off; u8_t th_flags; u16_t th_window; u16_t th_chksum; u16_t th_urgptr;} tcp_hdr_t;#define TH_DO_MASK 0xf0#define TH_FLAGS_MASK 0x3f#define THF_FIN 0x1#define THF_SYN 0x2#define THF_RST 0x4#define THF_PSH 0x8#define THF_ACK 0x10#define THF_URG 0x20typedef struct tcp_hdropt{ int tho_opt_siz; u8_t tho_data[TCP_MAX_HDR_SIZE-TCP_MIN_HDR_SIZE];} tcp_hdropt_t;#endif /* __SERVER__IP__GEN__TCP_HDR_H__ */
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