Commit e6dd731c authored by Sven Wegener's avatar Sven Wegener
Browse files

ipvs: Use ERR_PTR for returning errors from make_receive_sock() and make_send_sock()



The additional information we now return to the caller is currently not used,
but will be used to return errors to user space.
Signed-off-by: default avatarSven Wegener <sven.wegener@stealer.net>
Acked-by: default avatarSimon Horman <horms@verge.net.au>
parent d5640050
......@@ -27,6 +27,7 @@
#include <linux/in.h>
#include <linux/igmp.h> /* for ip_mc_join_group */
#include <linux/udp.h>
#include <linux/err.h>
#include <net/ip.h>
#include <net/sock.h>
......@@ -576,14 +577,17 @@ static int bind_mcastif_addr(struct socket *sock, char *ifname)
static struct socket * make_send_sock(void)
{
struct socket *sock;
int result;
/* First create a socket */
if (sock_create_kern(PF_INET, SOCK_DGRAM, IPPROTO_UDP, &sock) < 0) {
result = sock_create_kern(PF_INET, SOCK_DGRAM, IPPROTO_UDP, &sock);
if (result < 0) {
IP_VS_ERR("Error during creation of socket; terminating\n");
return NULL;
return ERR_PTR(result);
}
if (set_mcast_if(sock->sk, ip_vs_master_mcast_ifn) < 0) {
result = set_mcast_if(sock->sk, ip_vs_master_mcast_ifn);
if (result < 0) {
IP_VS_ERR("Error setting outbound mcast interface\n");
goto error;
}
......@@ -591,14 +595,15 @@ static struct socket * make_send_sock(void)
set_mcast_loop(sock->sk, 0);
set_mcast_ttl(sock->sk, 1);
if (bind_mcastif_addr(sock, ip_vs_master_mcast_ifn) < 0) {
result = bind_mcastif_addr(sock, ip_vs_master_mcast_ifn);
if (result < 0) {
IP_VS_ERR("Error binding address of the mcast interface\n");
goto error;
}
if (sock->ops->connect(sock,
(struct sockaddr*)&mcast_addr,
sizeof(struct sockaddr), 0) < 0) {
result = sock->ops->connect(sock, (struct sockaddr *) &mcast_addr,
sizeof(struct sockaddr), 0);
if (result < 0) {
IP_VS_ERR("Error connecting to the multicast addr\n");
goto error;
}
......@@ -607,7 +612,7 @@ static struct socket * make_send_sock(void)
error:
sock_release(sock);
return NULL;
return ERR_PTR(result);
}
......@@ -617,27 +622,30 @@ static struct socket * make_send_sock(void)
static struct socket * make_receive_sock(void)
{
struct socket *sock;
int result;
/* First create a socket */
if (sock_create_kern(PF_INET, SOCK_DGRAM, IPPROTO_UDP, &sock) < 0) {
result = sock_create_kern(PF_INET, SOCK_DGRAM, IPPROTO_UDP, &sock);
if (result < 0) {
IP_VS_ERR("Error during creation of socket; terminating\n");
return NULL;
return ERR_PTR(result);
}
/* it is equivalent to the REUSEADDR option in user-space */
sock->sk->sk_reuse = 1;
if (sock->ops->bind(sock,
(struct sockaddr*)&mcast_addr,
sizeof(struct sockaddr)) < 0) {
result = sock->ops->bind(sock, (struct sockaddr *) &mcast_addr,
sizeof(struct sockaddr));
if (result < 0) {
IP_VS_ERR("Error binding to the multicast addr\n");
goto error;
}
/* join the multicast group */
if (join_mcast_group(sock->sk,
(struct in_addr*)&mcast_addr.sin_addr,
ip_vs_backup_mcast_ifn) < 0) {
result = join_mcast_group(sock->sk,
(struct in_addr *) &mcast_addr.sin_addr,
ip_vs_backup_mcast_ifn);
if (result < 0) {
IP_VS_ERR("Error joining to the multicast group\n");
goto error;
}
......@@ -646,7 +654,7 @@ static struct socket * make_receive_sock(void)
error:
sock_release(sock);
return NULL;
return ERR_PTR(result);
}
......@@ -719,7 +727,7 @@ static void sync_master_loop(void)
/* create the sending multicast socket */
sock = make_send_sock();
if (!sock)
if (IS_ERR(sock))
return;
IP_VS_INFO("sync thread started: state = MASTER, mcast_ifn = %s, "
......@@ -772,7 +780,7 @@ static void sync_backup_loop(void)
/* create the receiving multicast socket */
sock = make_receive_sock();
if (!sock)
if (IS_ERR(sock))
goto out;
IP_VS_INFO("sync thread started: state = BACKUP, mcast_ifn = %s, "
......
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