lkml.org 
[lkml]   [2011]   [Aug]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[48/55] tunnels: fix netns vs proto registration ordering
2.6.32-longterm review patch.  If anyone has any objections, please let us know.

------------------
From: Alexey Dobriyan <adobriyan@gmail.com>

commit d5aa407f59f5b83d2c50ec88f5bf56d40f1f8978 upstream.

Same stuff as in ip_gre patch: receive hook can be called before netns
setup is done, oopsing in net_generic().

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
net/ipv4/ipip.c | 13 ++++++-------
net/ipv6/ip6_tunnel.c | 28 +++++++++++++++-------------
net/ipv6/sit.c | 13 ++++++-------
net/ipv6/xfrm6_tunnel.c | 22 +++++++++++-----------
4 files changed, 38 insertions(+), 38 deletions(-)
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -830,15 +830,14 @@ static int __init ipip_init(void)

printk(banner);

- if (xfrm4_tunnel_register(&ipip_handler, AF_INET)) {
+ err = register_pernet_gen_device(&ipip_net_id, &ipip_net_ops);
+ if (err < 0)
+ return err;
+ err = xfrm4_tunnel_register(&ipip_handler, AF_INET);
+ if (err < 0) {
+ unregister_pernet_device(&ipip_net_ops);
printk(KERN_INFO "ipip init: can't register tunnel\n");
- return -EAGAIN;
}
-
- err = register_pernet_gen_device(&ipip_net_id, &ipip_net_ops);
- if (err)
- xfrm4_tunnel_deregister(&ipip_handler, AF_INET);
-
return err;
}

--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -1466,27 +1466,29 @@ static int __init ip6_tunnel_init(void)
{
int err;

- if (xfrm6_tunnel_register(&ip4ip6_handler, AF_INET)) {
+ err = register_pernet_device(&ip6_tnl_net_ops);
+ if (err < 0)
+ goto out_pernet;
+
+ err = xfrm6_tunnel_register(&ip4ip6_handler, AF_INET);
+ if (err < 0) {
printk(KERN_ERR "ip6_tunnel init: can't register ip4ip6\n");
- err = -EAGAIN;
- goto out;
+ goto out_ip4ip6;
}

- if (xfrm6_tunnel_register(&ip6ip6_handler, AF_INET6)) {
+ err = xfrm6_tunnel_register(&ip6ip6_handler, AF_INET6);
+ if (err < 0) {
printk(KERN_ERR "ip6_tunnel init: can't register ip6ip6\n");
- err = -EAGAIN;
- goto unreg_ip4ip6;
+ goto out_ip6ip6;
}

- err = register_pernet_gen_device(&ip6_tnl_net_id, &ip6_tnl_net_ops);
- if (err < 0)
- goto err_pernet;
return 0;
-err_pernet:
- xfrm6_tunnel_deregister(&ip6ip6_handler, AF_INET6);
-unreg_ip4ip6:
+
+out_ip6ip6:
xfrm6_tunnel_deregister(&ip4ip6_handler, AF_INET);
-out:
+out_ip4ip6:
+ unregister_pernet_device(&ip6_tnl_net_ops);
+out_pernet:
return err;
}

--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -1086,15 +1086,14 @@ static int __init sit_init(void)

printk(KERN_INFO "IPv6 over IPv4 tunneling driver\n");

- if (xfrm4_tunnel_register(&sit_handler, AF_INET6) < 0) {
- printk(KERN_INFO "sit init: Can't add protocol\n");
- return -EAGAIN;
- }
-
err = register_pernet_gen_device(&sit_net_id, &sit_net_ops);
if (err < 0)
- xfrm4_tunnel_deregister(&sit_handler, AF_INET6);
-
+ return err;
+ err = xfrm4_tunnel_register(&sit_handler, AF_INET6);
+ if (err < 0) {
+ unregister_pernet_device(&sit_net_ops);
+ printk(KERN_INFO "sit init: Can't add protocol\n");
+ }
return err;
}

--- a/net/ipv6/xfrm6_tunnel.c
+++ b/net/ipv6/xfrm6_tunnel.c
@@ -346,36 +346,36 @@ static int __init xfrm6_tunnel_init(void
{
int rv;

- rv = xfrm_register_type(&xfrm6_tunnel_type, AF_INET6);
+ rv = xfrm6_tunnel_spi_init();
if (rv < 0)
goto err;
+ rv = xfrm_register_type(&xfrm6_tunnel_type, AF_INET6);
+ if (rv < 0)
+ goto out_type;
rv = xfrm6_tunnel_register(&xfrm6_tunnel_handler, AF_INET6);
if (rv < 0)
- goto unreg;
+ goto out_xfrm6;
rv = xfrm6_tunnel_register(&xfrm46_tunnel_handler, AF_INET);
if (rv < 0)
- goto dereg6;
- rv = xfrm6_tunnel_spi_init();
- if (rv < 0)
- goto dereg46;
+ goto out_xfrm46;
return 0;

-dereg46:
- xfrm6_tunnel_deregister(&xfrm46_tunnel_handler, AF_INET);
-dereg6:
+out_xfrm46:
xfrm6_tunnel_deregister(&xfrm6_tunnel_handler, AF_INET6);
-unreg:
+out_xfrm6:
xfrm_unregister_type(&xfrm6_tunnel_type, AF_INET6);
+out_type:
+ xfrm6_tunnel_spi_fini();
err:
return rv;
}

static void __exit xfrm6_tunnel_fini(void)
{
- xfrm6_tunnel_spi_fini();
xfrm6_tunnel_deregister(&xfrm46_tunnel_handler, AF_INET);
xfrm6_tunnel_deregister(&xfrm6_tunnel_handler, AF_INET6);
xfrm_unregister_type(&xfrm6_tunnel_type, AF_INET6);
+ xfrm6_tunnel_spi_fini();
}

module_init(xfrm6_tunnel_init);



\
 
 \ /
  Last update: 2011-08-06 02:27    [from the cache]
©2003-2011 Jasper Spaans