soccr: add source and destination addresses to libsoccr_sk_data

These addresses will be used to restore half-closed sockets,
we will need to send a fake fin packet for that.

And in the next patch connect() will be moved into soccr.
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

criu/include/sk-inet.h

@@ -85,4 +85,8 @@ struct rst_tcp_sock {
 	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__ */

criu/sk-inet.c

@@ -11,6 +11,8 @@
 #include <string.h>
 #include <stdlib.h>
 
+#include "../soccr/soccr.h"
+
 #include "libnetlink.h"
 #include "cr_options.h"
 #include "imgset.h"
@@ -655,12 +657,7 @@ err:
 	return -1;
 }
 
-union sockaddr_inet {
-	struct sockaddr_in v4;
-	struct sockaddr_in6 v6;
-};
-
-static int restore_sockaddr(union sockaddr_inet *sa,
+int restore_sockaddr(union libsoccr_addr *sa,
 		int family, u32 pb_port, u32 *pb_addr, u32 ifindex)
 {
 	BUILD_BUG_ON(sizeof(sa->v4.sin_addr.s_addr) > PB_ALEN_INET * sizeof(u32));
@@ -695,7 +692,7 @@ static int restore_sockaddr(union sockaddr_inet *sa,
 int inet_bind(int sk, struct inet_sk_info *ii)
 {
 	bool rst_freebind = false;
-	union sockaddr_inet addr;
+	union libsoccr_addr addr;
 	int addr_size, ifindex = 0;
 
 	if (ii->ie->ifname) {
@@ -751,7 +748,7 @@ int inet_bind(int sk, struct inet_sk_info *ii)
 
 int inet_connect(int sk, struct inet_sk_info *ii)
 {
-	union sockaddr_inet addr;
+	union libsoccr_addr addr;
 	int addr_size;
 
 	addr_size = restore_sockaddr(&addr, ii->ie->family,

criu/sk-tcp.c

@@ -338,6 +338,15 @@ static int restore_tcp_conn_state(int sk, struct libsoccr_sk *socr, struct inet_
 		data.rcv_wup = tse->rcv_wup;
 	}
 
+	if (restore_sockaddr(&data.src_addr,
+				ii->ie->family, ii->ie->src_port,
+				ii->ie->src_addr, 0) < 0)
+		goto err_c;
+	if (restore_sockaddr(&data.dst_addr,
+				ii->ie->family, ii->ie->dst_port,
+				ii->ie->dst_addr, 0) < 0)
+		goto err_c;
+
 	(void)data;
 
 	if (libsoccr_set_sk_data_unbound(socr, &data, sizeof(data)))

soccr/soccr.h

 #ifndef __LIBSOCCR_H__
 #define __LIBSOCCR_H__
 #include <linux/types.h>
+#include <netinet/in.h>
 #include <stdint.h>
 
 #include "config.h"
@@ -57,6 +58,12 @@ void libsoccr_set_log(unsigned int level, void (*fn)(unsigned int level, const c
  */
 struct libsoccr_sk;
 
+union libsoccr_addr {
+	struct sockaddr sa;
+	struct sockaddr_in v4;
+	struct sockaddr_in6 v6;
+};
+
 /*
  * Connection info that should be saved after fetching from the
  * socket and given back into the library in two steps (see below).
@@ -80,6 +87,9 @@ struct libsoccr_sk_data {
 	__u32	max_window;
 	__u32	rcv_wnd;
 	__u32	rcv_wup;
+
+	union libsoccr_addr src_addr;
+	union libsoccr_addr dst_addr;
 };
 
 /*