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-rw-r--r--include/linux/socket.h1
-rw-r--r--include/net/net_namespace.h1
-rw-r--r--net/core/sysctl_net_core.c4
-rw-r--r--net/socket.c8
4 files changed, 8 insertions, 6 deletions
diff --git a/include/linux/socket.h b/include/linux/socket.h
index eb5bdd5..bd2b30a 100644
--- a/include/linux/socket.h
+++ b/include/linux/socket.h
@@ -24,7 +24,6 @@ struct __kernel_sockaddr_storage {
#include <linux/types.h> /* pid_t */
#include <linux/compiler.h> /* __user */
-extern int sysctl_somaxconn;
#ifdef CONFIG_PROC_FS
struct seq_file;
extern void socket_seq_show(struct seq_file *seq);
diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
index d593611..b62e31f 100644
--- a/include/net/net_namespace.h
+++ b/include/net/net_namespace.h
@@ -39,6 +39,7 @@ struct net {
/* core sysctls */
struct ctl_table_header *sysctl_core_hdr;
+ int sysctl_somaxconn;
/* List of all packet sockets. */
rwlock_t packet_sklist_lock;
diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c
index dc4cf7d..130338f 100644
--- a/net/core/sysctl_net_core.c
+++ b/net/core/sysctl_net_core.c
@@ -127,7 +127,7 @@ static struct ctl_table net_core_table[] = {
{
.ctl_name = NET_CORE_SOMAXCONN,
.procname = "somaxconn",
- .data = &sysctl_somaxconn,
+ .data = &init_net.sysctl_somaxconn,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec
@@ -161,6 +161,8 @@ static __net_init int sysctl_core_net_init(struct net *net)
{
struct ctl_table *tbl, *tmp;
+ net->sysctl_somaxconn = SOMAXCONN;
+
tbl = net_core_table;
if (net != &init_net) {
tbl = kmemdup(tbl, sizeof(net_core_table), GFP_KERNEL);
diff --git a/net/socket.c b/net/socket.c
index 9ebca5c..7651de0 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -1365,17 +1365,17 @@ asmlinkage long sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen)
* ready for listening.
*/
-int sysctl_somaxconn __read_mostly = SOMAXCONN;
-
asmlinkage long sys_listen(int fd, int backlog)
{
struct socket *sock;
int err, fput_needed;
+ int somaxconn;
sock = sockfd_lookup_light(fd, &err, &fput_needed);
if (sock) {
- if ((unsigned)backlog > sysctl_somaxconn)
- backlog = sysctl_somaxconn;
+ somaxconn = sock->sk->sk_net->sysctl_somaxconn;
+ if ((unsigned)backlog > somaxconn)
+ backlog = somaxconn;
err = security_socket_listen(sock, backlog);
if (!err)
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