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#pragma once
#include <MESA/stream.h>
struct tsg_proxy_tcp_option
{
uint16_t mss;
uint8_t wscale_set;
uint8_t wscale;
uint8_t sack;
uint8_t ts_set;
uint32_t ts_val;
uint32_t ts_ecr;
uint16_t window;
uint8_t route_ctx_len;
uint8_t route_ctx[64];//route_ctx is contiguous memory
struct segment_id_list sid_list;
};
struct tsg_proxy_tcp_attribute
{
uint8_t first_data_pkt_processed;
uint32_t tcp_seq;
uint32_t tcp_ack;
uint8_t tcp_protocol;
uint8_t tcp_info_packet_cur_dir;
struct tsg_proxy_tcp_option tcp_opt_client;
struct tsg_proxy_tcp_option tcp_opt_server;
};
struct pkt_info{
addr_type_t addr_type;
union{
struct iphdr *v4;
struct ip6_hdr *v6;
}iphdr;
uint16_t iphdr_len;
uint16_t ip_totlen;
struct tcphdr *tcphdr;
uint16_t tcphdr_len;
char *data;
uint16_t data_len;
int parse_failed;
};
int tsg_proxy_ipv4_header_parse(const void *a_packet, struct pkt_info *pktinfo);
int tsg_proxy_ipv6_header_parse(const void *a_packet, struct pkt_info *pktinfo);
void tsg_proxy_tcp_parse(struct tsg_proxy_tcp_attribute *tcp_attr, struct pkt_info *pktinfo, const struct streaminfo *pstream);
void tsg_proxy_first_data_process(const struct streaminfo *stream, struct tsg_proxy_tcp_attribute *tcp_attr, struct pkt_info *pktinfo);
void tsg_proxy_tcp_options_parse(const struct streaminfo *stream, const void *a_packet);
void tsg_proxy_update_policy_fill(const struct streaminfo *stream, struct update_policy *policy, struct segment_id_list *segment_ids);
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