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sk-inet.h
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sk-inet.h
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#ifndef __CR_SK_INET_H__
#define __CR_SK_INET_H__
#include <netinet/tcp.h>
#include "sockets.h"
#include "files.h"
#include "common/list.h"
#include "images/sk-inet.pb-c.h"
#define INET_ADDR_LEN 48 /* max of INET_ADDRSTRLEN and INET6_ADDRSTRLEN */
#ifndef TCP_REPAIR
#define TCP_REPAIR 19 /* TCP sock is under repair right now */
#define TCP_REPAIR_QUEUE 20
#define TCP_QUEUE_SEQ 21
#define TCP_REPAIR_OPTIONS 22
#endif
struct inet_sk_desc {
struct socket_desc sd;
unsigned int type;
unsigned int src_port;
unsigned int dst_port;
unsigned int state;
unsigned int rqlen;
unsigned int wqlen; /* sent + unsent data */
unsigned int uwqlen; /* unsent data */
unsigned int src_addr[4];
unsigned int dst_addr[4];
unsigned short shutdown;
int rfd;
int cpt_reuseaddr;
struct list_head rlist;
void *priv;
};
struct inet_port;
struct inet_sk_info {
InetSkEntry *ie;
struct file_desc d;
struct inet_port *port;
struct list_head port_list;
/*
* This is an fd by which the socket is opened.
* It will be carried down to restorer code to
* repair-off the socket at the very end.
*/
int sk_fd;
struct list_head rlist;
};
extern int inet_bind(int sk, struct inet_sk_info *);
extern int inet_connect(int sk, struct inet_sk_info *);
#ifdef CR_NOGLIBC
#define setsockopt sys_setsockopt
#endif
static inline void tcp_repair_off(int fd)
{
int aux = 0, ret;
ret = setsockopt(fd, SOL_TCP, TCP_REPAIR, &aux, sizeof(aux));
if (ret < 0)
pr_err("Failed to turn off repair mode on socket: %m\n");
}
extern void tcp_locked_conn_add(struct inet_sk_info *);
extern void rst_unlock_tcp_connections(void);
extern void cpt_unlock_tcp_connections(void);
extern int dump_one_tcp(int sk, struct inet_sk_desc *sd);
extern int restore_one_tcp(int sk, struct inet_sk_info *si);
#define SK_EST_PARAM "tcp-established"
#define SK_INFLIGHT_PARAM "skip-in-flight"
struct task_restore_args;
int prepare_tcp_socks(struct task_restore_args *);
struct rst_tcp_sock {
int sk;
bool reuseaddr;
};
union libsoccr_addr;
int restore_sockaddr(union libsoccr_addr *sa,
int family, u32 pb_port, u32 *pb_addr, u32 ifindex);
#endif /* __CR_SK_INET_H__ */