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authorChristoph Hellwig <hch@lst.de>2020-05-28 07:12:27 +0200
committerDavid S. Miller <davem@davemloft.net>2020-05-28 11:11:45 -0700
commitc4e446bf5a06a1db24b4f0115a89f0380a495c62 (patch)
treea559ebc107bcfa1200b5f6120c99f9ce1163ad3d /drivers/target
parent6ebf71bab9fb476fc8132be4c12b88201278f0ca (diff)
downloadlinux-c4e446bf5a06a1db24b4f0115a89f0380a495c62.tar.bz2
ipv4: add ip_sock_set_freebind
Add a helper to directly set the IP_FREEBIND sockopt from kernel space without going through a fake uaccess. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/target')
-rw-r--r--drivers/target/iscsi/iscsi_target_login.c13
1 files changed, 3 insertions, 10 deletions
diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c
index b561b07a869a..85748e338858 100644
--- a/drivers/target/iscsi/iscsi_target_login.c
+++ b/drivers/target/iscsi/iscsi_target_login.c
@@ -15,6 +15,7 @@
#include <linux/sched/signal.h>
#include <linux/idr.h>
#include <linux/tcp.h> /* TCP_NODELAY */
+#include <net/ip.h>
#include <net/ipv6.h> /* ipv6_addr_v4mapped() */
#include <scsi/iscsi_proto.h>
#include <target/target_core_base.h>
@@ -855,7 +856,7 @@ int iscsit_setup_np(
struct sockaddr_storage *sockaddr)
{
struct socket *sock = NULL;
- int backlog = ISCSIT_TCP_BACKLOG, ret, opt = 0, len;
+ int backlog = ISCSIT_TCP_BACKLOG, ret, len;
switch (np->np_network_transport) {
case ISCSI_TCP:
@@ -900,15 +901,7 @@ int iscsit_setup_np(
if (np->np_network_transport == ISCSI_TCP)
tcp_sock_set_nodelay(sock->sk);
sock_set_reuseaddr(sock->sk);
-
- opt = 1;
- ret = kernel_setsockopt(sock, IPPROTO_IP, IP_FREEBIND,
- (char *)&opt, sizeof(opt));
- if (ret < 0) {
- pr_err("kernel_setsockopt() for IP_FREEBIND"
- " failed\n");
- goto fail;
- }
+ ip_sock_set_freebind(sock->sk);
ret = kernel_bind(sock, (struct sockaddr *)&np->np_sockaddr, len);
if (ret < 0) {