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Diffstat (limited to 'net/ipv4/devinet.c')
-rw-r--r--net/ipv4/devinet.c64
1 files changed, 41 insertions, 23 deletions
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index 927f1d4b8c80..6d3602ec640c 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -1802,6 +1802,9 @@ static int inet_netconf_fill_devconf(struct sk_buff *skb, int ifindex,
if (nla_put_s32(skb, NETCONFA_IFINDEX, ifindex) < 0)
goto nla_put_failure;
+ if (!devconf)
+ goto out;
+
if ((all || type == NETCONFA_FORWARDING) &&
nla_put_s32(skb, NETCONFA_FORWARDING,
IPV4_DEVCONF(*devconf, FORWARDING)) < 0)
@@ -1823,6 +1826,7 @@ static int inet_netconf_fill_devconf(struct sk_buff *skb, int ifindex,
IPV4_DEVCONF(*devconf, IGNORE_ROUTES_WITH_LINKDOWN)) < 0)
goto nla_put_failure;
+out:
nlmsg_end(skb, nlh);
return 0;
@@ -1831,8 +1835,8 @@ nla_put_failure:
return -EMSGSIZE;
}
-void inet_netconf_notify_devconf(struct net *net, int type, int ifindex,
- struct ipv4_devconf *devconf)
+void inet_netconf_notify_devconf(struct net *net, int event, int type,
+ int ifindex, struct ipv4_devconf *devconf)
{
struct sk_buff *skb;
int err = -ENOBUFS;
@@ -1842,7 +1846,7 @@ void inet_netconf_notify_devconf(struct net *net, int type, int ifindex,
goto errout;
err = inet_netconf_fill_devconf(skb, ifindex, devconf, 0, 0,
- RTM_NEWNETCONF, 0, type);
+ event, 0, type);
if (err < 0) {
/* -EMSGSIZE implies BUG in inet_netconf_msgsize_devconf() */
WARN_ON(err == -EMSGSIZE);
@@ -2021,10 +2025,12 @@ static void inet_forward_change(struct net *net)
IPV4_DEVCONF_ALL(net, ACCEPT_REDIRECTS) = !on;
IPV4_DEVCONF_DFLT(net, FORWARDING) = on;
- inet_netconf_notify_devconf(net, NETCONFA_FORWARDING,
+ inet_netconf_notify_devconf(net, RTM_NEWNETCONF,
+ NETCONFA_FORWARDING,
NETCONFA_IFINDEX_ALL,
net->ipv4.devconf_all);
- inet_netconf_notify_devconf(net, NETCONFA_FORWARDING,
+ inet_netconf_notify_devconf(net, RTM_NEWNETCONF,
+ NETCONFA_FORWARDING,
NETCONFA_IFINDEX_DEFAULT,
net->ipv4.devconf_dflt);
@@ -2037,7 +2043,8 @@ static void inet_forward_change(struct net *net)
in_dev = __in_dev_get_rtnl(dev);
if (in_dev) {
IN_DEV_CONF_SET(in_dev, FORWARDING, on);
- inet_netconf_notify_devconf(net, NETCONFA_FORWARDING,
+ inet_netconf_notify_devconf(net, RTM_NEWNETCONF,
+ NETCONFA_FORWARDING,
dev->ifindex, &in_dev->cnf);
}
}
@@ -2082,19 +2089,22 @@ static int devinet_conf_proc(struct ctl_table *ctl, int write,
if (i == IPV4_DEVCONF_RP_FILTER - 1 &&
new_value != old_value) {
ifindex = devinet_conf_ifindex(net, cnf);
- inet_netconf_notify_devconf(net, NETCONFA_RP_FILTER,
+ inet_netconf_notify_devconf(net, RTM_NEWNETCONF,
+ NETCONFA_RP_FILTER,
ifindex, cnf);
}
if (i == IPV4_DEVCONF_PROXY_ARP - 1 &&
new_value != old_value) {
ifindex = devinet_conf_ifindex(net, cnf);
- inet_netconf_notify_devconf(net, NETCONFA_PROXY_NEIGH,
+ inet_netconf_notify_devconf(net, RTM_NEWNETCONF,
+ NETCONFA_PROXY_NEIGH,
ifindex, cnf);
}
if (i == IPV4_DEVCONF_IGNORE_ROUTES_WITH_LINKDOWN - 1 &&
new_value != old_value) {
ifindex = devinet_conf_ifindex(net, cnf);
- inet_netconf_notify_devconf(net, NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN,
+ inet_netconf_notify_devconf(net, RTM_NEWNETCONF,
+ NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN,
ifindex, cnf);
}
}
@@ -2129,7 +2139,7 @@ static int devinet_sysctl_forward(struct ctl_table *ctl, int write,
container_of(cnf, struct in_device, cnf);
if (*valp)
dev_disable_lro(idev->dev);
- inet_netconf_notify_devconf(net,
+ inet_netconf_notify_devconf(net, RTM_NEWNETCONF,
NETCONFA_FORWARDING,
idev->dev->ifindex,
cnf);
@@ -2137,7 +2147,8 @@ static int devinet_sysctl_forward(struct ctl_table *ctl, int write,
rtnl_unlock();
rt_cache_flush(net);
} else
- inet_netconf_notify_devconf(net, NETCONFA_FORWARDING,
+ inet_netconf_notify_devconf(net, RTM_NEWNETCONF,
+ NETCONFA_FORWARDING,
NETCONFA_IFINDEX_DEFAULT,
net->ipv4.devconf_dflt);
}
@@ -2259,7 +2270,8 @@ static int __devinet_sysctl_register(struct net *net, char *dev_name,
p->sysctl = t;
- inet_netconf_notify_devconf(net, NETCONFA_ALL, ifindex, p);
+ inet_netconf_notify_devconf(net, RTM_NEWNETCONF, NETCONFA_ALL,
+ ifindex, p);
return 0;
free:
@@ -2268,16 +2280,18 @@ out:
return -ENOBUFS;
}
-static void __devinet_sysctl_unregister(struct ipv4_devconf *cnf)
+static void __devinet_sysctl_unregister(struct net *net,
+ struct ipv4_devconf *cnf, int ifindex)
{
struct devinet_sysctl_table *t = cnf->sysctl;
- if (!t)
- return;
+ if (t) {
+ cnf->sysctl = NULL;
+ unregister_net_sysctl_table(t->sysctl_header);
+ kfree(t);
+ }
- cnf->sysctl = NULL;
- unregister_net_sysctl_table(t->sysctl_header);
- kfree(t);
+ inet_netconf_notify_devconf(net, RTM_DELNETCONF, 0, ifindex, NULL);
}
static int devinet_sysctl_register(struct in_device *idev)
@@ -2299,7 +2313,9 @@ static int devinet_sysctl_register(struct in_device *idev)
static void devinet_sysctl_unregister(struct in_device *idev)
{
- __devinet_sysctl_unregister(&idev->cnf);
+ struct net *net = dev_net(idev->dev);
+
+ __devinet_sysctl_unregister(net, &idev->cnf, idev->dev->ifindex);
neigh_sysctl_unregister(idev->arp_parms);
}
@@ -2374,9 +2390,9 @@ static __net_init int devinet_init_net(struct net *net)
#ifdef CONFIG_SYSCTL
err_reg_ctl:
- __devinet_sysctl_unregister(dflt);
+ __devinet_sysctl_unregister(net, dflt, NETCONFA_IFINDEX_DEFAULT);
err_reg_dflt:
- __devinet_sysctl_unregister(all);
+ __devinet_sysctl_unregister(net, all, NETCONFA_IFINDEX_ALL);
err_reg_all:
if (tbl != ctl_forward_entry)
kfree(tbl);
@@ -2398,8 +2414,10 @@ static __net_exit void devinet_exit_net(struct net *net)
tbl = net->ipv4.forw_hdr->ctl_table_arg;
unregister_net_sysctl_table(net->ipv4.forw_hdr);
- __devinet_sysctl_unregister(net->ipv4.devconf_dflt);
- __devinet_sysctl_unregister(net->ipv4.devconf_all);
+ __devinet_sysctl_unregister(net, net->ipv4.devconf_dflt,
+ NETCONFA_IFINDEX_DEFAULT);
+ __devinet_sysctl_unregister(net, net->ipv4.devconf_all,
+ NETCONFA_IFINDEX_ALL);
kfree(tbl);
#endif
kfree(net->ipv4.devconf_dflt);
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