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Commit 2a75de0c authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller
Browse files

[NETNS]: Should build with CONFIG_SYSCTL=n 



Previous NETNS patches broke CONFIG_SYSCTL=n case

Signed-off-by: default avatarEric Dumazet <dada1@cosmosbay.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6e32814b

include/net/netns/ipv4.h

+2 −0
Original line number Diff line number Diff line
@@ -8,7 +8,9 @@ struct ctl_table_header; 
struct ipv4_devconf;



struct netns_ipv4 {

#ifdef CONFIG_SYSCTL

	struct ctl_table_header	*forw_hdr;

#endif

	struct ipv4_devconf	*devconf_all;

	struct ipv4_devconf	*devconf_dflt;

};

net/ipv4/devinet.c

+10 −7
Original line number Diff line number Diff line
@@ -1542,7 +1542,6 @@ static void devinet_sysctl_unregister(struct in_device *idev) 
	__devinet_sysctl_unregister(&idev->cnf);

	neigh_sysctl_unregister(idev->arp_parms);

}

#endif



static struct ctl_table ctl_forward_entry[] = {

	{
@@ -1565,18 +1564,20 @@ static __net_initdata struct ctl_path net_ipv4_path[] = { 
	{ .procname = "ipv4", .ctl_name = NET_IPV4, },

	{ },

};

#endif



static __net_init int devinet_init_net(struct net *net)

{

	int err;

	struct ctl_table *tbl;

	struct ipv4_devconf *all, *dflt;

#ifdef CONFIG_SYSCTL

	struct ctl_table *tbl = ctl_forward_entry;

	struct ctl_table_header *forw_hdr;

#endif



	err = -ENOMEM;

	all = &ipv4_devconf;

	dflt = &ipv4_devconf_dflt;

	tbl = ctl_forward_entry;



	if (net != &init_net) {

		all = kmemdup(all, sizeof(ipv4_devconf), GFP_KERNEL);
@@ -1587,6 +1588,7 @@ static __net_init int devinet_init_net(struct net *net) 
		if (dflt == NULL)

			goto err_alloc_dflt;



#ifdef CONFIG_SYSCTL

		tbl = kmemdup(tbl, sizeof(ctl_forward_entry), GFP_KERNEL);

		if (tbl == NULL)

			goto err_alloc_ctl;
@@ -1594,6 +1596,7 @@ static __net_init int devinet_init_net(struct net *net) 
		tbl[0].data = &all->data[NET_IPV4_CONF_FORWARDING - 1];

		tbl[0].extra1 = all;

		tbl[0].extra2 = net;

#endif

	}



#ifdef CONFIG_SYSCTL
@@ -1611,9 +1614,9 @@ static __net_init int devinet_init_net(struct net *net) 
	forw_hdr = register_net_sysctl_table(net, net_ipv4_path, tbl);

	if (forw_hdr == NULL)

		goto err_reg_ctl;

	net->ipv4.forw_hdr = forw_hdr;

#endif



	net->ipv4.forw_hdr = forw_hdr;

	net->ipv4.devconf_all = all;

	net->ipv4.devconf_dflt = dflt;

	return 0;
@@ -1626,8 +1629,8 @@ static __net_init int devinet_init_net(struct net *net) 
err_reg_all:

	if (tbl != ctl_forward_entry)

		kfree(tbl);

#endif

err_alloc_ctl:

#endif

	if (dflt != &ipv4_devconf_dflt)

		kfree(dflt);

err_alloc_dflt:
@@ -1639,15 +1642,15 @@ static __net_init int devinet_init_net(struct net *net) 


static __net_exit void devinet_exit_net(struct net *net)

{

#ifdef CONFIG_SYSCTL

	struct ctl_table *tbl;



	tbl = net->ipv4.forw_hdr->ctl_table_arg;

#ifdef CONFIG_SYSCTL

	unregister_net_sysctl_table(net->ipv4.forw_hdr);

	__devinet_sysctl_unregister(net->ipv4.devconf_dflt);

	__devinet_sysctl_unregister(net->ipv4.devconf_all);

#endif

	kfree(tbl);

#endif

	kfree(net->ipv4.devconf_dflt);

	kfree(net->ipv4.devconf_all);

}