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OpenCloudOS-Kernel
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[NETNS]: Introduce a netns_core structure. 

There's already some stuff on the struct net, that should better
be folded into netns_core structure. I'm making the per-proto inuse 
counter be per-net also, which is also a candidate for this, so 
introduce this structure and populate it a bit.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Emelyanov 2008-03-31 19:41:14 -07:00 committed by David S. Miller
parent 3edf8fa5cc
commit 8efa6e93cb
4 changed files with 22 additions and 11 deletions
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6
include/net/net_namespace.h
View File

@ -8,6 +8,7 @@
#include <linux/workqueue.h> #include <linux/workqueue.h>
#include <linux/list.h> #include <linux/list.h>
#include <net/netns/core.h>
#include <net/netns/unix.h> #include <net/netns/unix.h>
#include <net/netns/packet.h> #include <net/netns/packet.h>
#include <net/netns/ipv4.h> #include <net/netns/ipv4.h>
@ -46,10 +47,7 @@ struct net {
struct sock *rtnl; /* rtnetlink socket */ struct sock *rtnl; /* rtnetlink socket */
/* core sysctls */ struct netns_core core;
struct ctl_table_header *sysctl_core_hdr;
int sysctl_somaxconn;
struct netns_packet packet; struct netns_packet packet;
struct netns_unix unx; struct netns_unix unx;
struct netns_ipv4 ipv4; struct netns_ipv4 ipv4;

13
include/net/netns/core.h Normal file
View File

@ -0,0 +1,13 @@
#ifndef __NETNS_CORE_H__
#define __NETNS_CORE_H__
struct ctl_table_header;
struct netns_core {
/* core sysctls */
struct ctl_table_header *sysctl_hdr;
int sysctl_somaxconn;
};
#endif

12
net/core/sysctl_net_core.c
View File

@ -127,7 +127,7 @@ static struct ctl_table net_core_table[] = {
{ {
.ctl_name = NET_CORE_SOMAXCONN, .ctl_name = NET_CORE_SOMAXCONN,
.procname = "somaxconn", .procname = "somaxconn",
.data = &init_net.sysctl_somaxconn, .data = &init_net.core.sysctl_somaxconn,
.maxlen = sizeof(int), .maxlen = sizeof(int),
.mode = 0644, .mode = 0644,
.proc_handler = &proc_dointvec .proc_handler = &proc_dointvec
@ -161,7 +161,7 @@ static __net_init int sysctl_core_net_init(struct net *net)
{ {
struct ctl_table *tbl, *tmp; struct ctl_table *tbl, *tmp;
net->sysctl_somaxconn = SOMAXCONN; net->core.sysctl_somaxconn = SOMAXCONN;
tbl = net_core_table; tbl = net_core_table;
if (net != &init_net) { if (net != &init_net) {
@ -178,9 +178,9 @@ static __net_init int sysctl_core_net_init(struct net *net)
} }
} }
net->sysctl_core_hdr = register_net_sysctl_table(net, net->core.sysctl_hdr = register_net_sysctl_table(net,
net_core_path, tbl); net_core_path, tbl);
if (net->sysctl_core_hdr == NULL) if (net->core.sysctl_hdr == NULL)
goto err_reg; goto err_reg;
return 0; return 0;
@ -196,8 +196,8 @@ static __net_exit void sysctl_core_net_exit(struct net *net)
{ {
struct ctl_table *tbl; struct ctl_table *tbl;
tbl = net->sysctl_core_hdr->ctl_table_arg; tbl = net->core.sysctl_hdr->ctl_table_arg;
unregister_net_sysctl_table(net->sysctl_core_hdr); unregister_net_sysctl_table(net->core.sysctl_hdr);
BUG_ON(tbl == net_core_table); BUG_ON(tbl == net_core_table);
kfree(tbl); kfree(tbl);
} }

2
net/socket.c
View File

@ -1375,7 +1375,7 @@ asmlinkage long sys_listen(int fd, int backlog)
sock = sockfd_lookup_light(fd, &err, &fput_needed); sock = sockfd_lookup_light(fd, &err, &fput_needed);
if (sock) { if (sock) {
somaxconn = sock_net(sock->sk)->sysctl_somaxconn; somaxconn = sock_net(sock->sk)->core.sysctl_somaxconn;
if ((unsigned)backlog > somaxconn) if ((unsigned)backlog > somaxconn)
backlog = somaxconn; backlog = somaxconn;