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tcp: Add code for "check"-ing TCP repair support

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Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Pavel Emelyanov 2012-05-03 15:21:37 +04:00
parent 1dc8527dea
commit 4ec76b285f
3 changed files with 22 additions and 1 deletions
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3
cr-check.c
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@ -8,6 +8,8 @@
#include "log.h"
#include "util-net.h"
#include "syscall.h"
#include "files.h"
#include "sk-inet.h"
static int check_map_files(void)
{
@ -150,6 +152,7 @@ int cr_check(void)
ret |= check_prctl();
ret |= check_fcntl();
ret |= check_proc_stat();
ret |= check_tcp_repair();
if (!ret)
pr_msg("Looks good.\n");

2
include/sk-inet.h
View file

@ -39,4 +39,6 @@ int restore_one_tcp(int sk, struct inet_sk_info *si);
struct cr_options;
void show_tcp_stream(int fd, struct cr_options *);
int check_tcp_repair(void);
#endif

18
sk-tcp.c
View file

@ -46,7 +46,7 @@ static int tcp_repair_on(int fd)
ret = setsockopt(fd, SOL_TCP, TCP_REPAIR, &aux, sizeof(aux));
if (ret < 0)
pr_perror("Can't turn repair ON");
pr_perror("Can't turn TCP repair mode ON");
return ret;
}
@ -537,3 +537,19 @@ void show_tcp_stream(int fd, struct cr_options *opt)
pr_img_tail(CR_FD_TCP_STREAM);
}
int check_tcp_repair(void)
{
int sk, ret;
sk = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
if (sk < 0) {
pr_perror("Can't create TCP socket :(\n");
return -1;
}
ret = tcp_repair_on(sk);
close(sk);
return ret;
}