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-rw-r--r--net/ipv6/addrconf.c53
-rw-r--r--net/ipv6/af_inet6.c24
-rw-r--r--net/ipv6/inet6_hashtables.c4
-rw-r--r--net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c5
-rw-r--r--net/ipv6/netfilter/nf_conntrack_reasm.c8
-rw-r--r--net/ipv6/reassembly.c7
-rw-r--r--net/ipv6/sit.c2
7 files changed, 49 insertions, 54 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index f9afb452249..1220e2c7831 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -493,15 +493,17 @@ static void addrconf_forward_change(struct net *net, __s32 newf)
read_unlock(&dev_base_lock);
}
-static void addrconf_fixup_forwarding(struct ctl_table *table, int *p, int old)
+static int addrconf_fixup_forwarding(struct ctl_table *table, int *p, int old)
{
struct net *net;
net = (struct net *)table->extra2;
if (p == &net->ipv6.devconf_dflt->forwarding)
- return;
+ return 0;
+
+ if (!rtnl_trylock())
+ return -ERESTARTSYS;
- rtnl_lock();
if (p == &net->ipv6.devconf_all->forwarding) {
__s32 newf = net->ipv6.devconf_all->forwarding;
net->ipv6.devconf_dflt->forwarding = newf;
@@ -512,6 +514,7 @@ static void addrconf_fixup_forwarding(struct ctl_table *table, int *p, int old)
if (*p)
rt6_purge_dflt_routers(net);
+ return 1;
}
#endif
@@ -2608,9 +2611,6 @@ static int addrconf_ifdown(struct net_device *dev, int how)
ASSERT_RTNL();
- if ((dev->flags & IFF_LOOPBACK) && how == 1)
- how = 0;
-
rt6_ifdown(net, dev);
neigh_ifdown(&nd_tbl, dev);
@@ -3983,7 +3983,7 @@ int addrconf_sysctl_forward(ctl_table *ctl, int write, struct file * filp,
ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos);
if (write)
- addrconf_fixup_forwarding(ctl, valp, val);
+ ret = addrconf_fixup_forwarding(ctl, valp, val);
return ret;
}
@@ -4019,8 +4019,7 @@ static int addrconf_sysctl_forward_strategy(ctl_table *table,
}
*valp = new;
- addrconf_fixup_forwarding(table, valp, val);
- return 1;
+ return addrconf_fixup_forwarding(table, valp, val);
}
static struct addrconf_sysctl_table
@@ -4446,25 +4445,6 @@ int unregister_inet6addr_notifier(struct notifier_block *nb)
EXPORT_SYMBOL(unregister_inet6addr_notifier);
-static void addrconf_net_exit(struct net *net)
-{
- struct net_device *dev;
-
- rtnl_lock();
- /* clean dev list */
- for_each_netdev(net, dev) {
- if (__in6_dev_get(dev) == NULL)
- continue;
- addrconf_ifdown(dev, 1);
- }
- addrconf_ifdown(net->loopback_dev, 2);
- rtnl_unlock();
-}
-
-static struct pernet_operations addrconf_net_ops = {
- .exit = addrconf_net_exit,
-};
-
/*
* Init / cleanup code
*/
@@ -4506,10 +4486,6 @@ int __init addrconf_init(void)
if (err)
goto errlo;
- err = register_pernet_device(&addrconf_net_ops);
- if (err)
- return err;
-
register_netdevice_notifier(&ipv6_dev_notf);
addrconf_verify(0);
@@ -4539,15 +4515,22 @@ errlo:
void addrconf_cleanup(void)
{
struct inet6_ifaddr *ifa;
+ struct net_device *dev;
int i;
unregister_netdevice_notifier(&ipv6_dev_notf);
- unregister_pernet_device(&addrconf_net_ops);
-
unregister_pernet_subsys(&addrconf_ops);
rtnl_lock();
+ /* clean dev list */
+ for_each_netdev(&init_net, dev) {
+ if (__in6_dev_get(dev) == NULL)
+ continue;
+ addrconf_ifdown(dev, 1);
+ }
+ addrconf_ifdown(init_net.loopback_dev, 2);
+
/*
* Check hash table.
*/
@@ -4568,6 +4551,4 @@ void addrconf_cleanup(void)
del_timer(&addr_chk_timer);
rtnl_unlock();
-
- unregister_pernet_subsys(&addrconf_net_ops);
}
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index c802bc1658a..9c8309ed35c 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -72,6 +72,10 @@ MODULE_LICENSE("GPL");
static struct list_head inetsw6[SOCK_MAX];
static DEFINE_SPINLOCK(inetsw6_lock);
+static int disable_ipv6 = 0;
+module_param_named(disable, disable_ipv6, int, 0);
+MODULE_PARM_DESC(disable, "Disable IPv6 such that it is non-functional");
+
static __inline__ struct ipv6_pinfo *inet6_sk_generic(struct sock *sk)
{
const int offset = sk->sk_prot->obj_size - sizeof(struct ipv6_pinfo);
@@ -991,10 +995,21 @@ static int __init inet6_init(void)
{
struct sk_buff *dummy_skb;
struct list_head *r;
- int err;
+ int err = 0;
BUILD_BUG_ON(sizeof(struct inet6_skb_parm) > sizeof(dummy_skb->cb));
+ /* Register the socket-side information for inet6_create. */
+ for(r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r)
+ INIT_LIST_HEAD(r);
+
+ if (disable_ipv6) {
+ printk(KERN_INFO
+ "IPv6: Loaded, but administratively disabled, "
+ "reboot required to enable\n");
+ goto out;
+ }
+
err = proto_register(&tcpv6_prot, 1);
if (err)
goto out;
@@ -1012,10 +1027,6 @@ static int __init inet6_init(void)
goto out_unregister_udplite_proto;
- /* Register the socket-side information for inet6_create. */
- for(r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r)
- INIT_LIST_HEAD(r);
-
/* We MUST register RAW sockets before we create the ICMP6,
* IGMP6, or NDISC control sockets.
*/
@@ -1181,6 +1192,9 @@ module_init(inet6_init);
static void __exit inet6_exit(void)
{
+ if (disable_ipv6)
+ return;
+
/* First of all disallow new sockets creation. */
sock_unregister(PF_INET6);
/* Disallow any further netlink messages */
diff --git a/net/ipv6/inet6_hashtables.c b/net/ipv6/inet6_hashtables.c
index 8fe267feb81..1bcc3431859 100644
--- a/net/ipv6/inet6_hashtables.c
+++ b/net/ipv6/inet6_hashtables.c
@@ -258,11 +258,11 @@ unique:
if (twp != NULL) {
*twp = tw;
- NET_INC_STATS_BH(twsk_net(tw), LINUX_MIB_TIMEWAITRECYCLED);
+ NET_INC_STATS_BH(net, LINUX_MIB_TIMEWAITRECYCLED);
} else if (tw != NULL) {
/* Silly. Should hash-dance instead... */
inet_twsk_deschedule(tw, death_row);
- NET_INC_STATS_BH(twsk_net(tw), LINUX_MIB_TIMEWAITRECYCLED);
+ NET_INC_STATS_BH(net, LINUX_MIB_TIMEWAITRECYCLED);
inet_twsk_put(tw);
}
diff --git a/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c b/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
index c323643ffcf..72dbb6d1a6b 100644
--- a/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
+++ b/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
@@ -201,8 +201,9 @@ icmpv6_error(struct net *net, struct sk_buff *skb, unsigned int dataoff,
if (net->ct.sysctl_checksum && hooknum == NF_INET_PRE_ROUTING &&
nf_ip6_checksum(skb, hooknum, dataoff, IPPROTO_ICMPV6)) {
- nf_log_packet(PF_INET6, 0, skb, NULL, NULL, NULL,
- "nf_ct_icmpv6: ICMPv6 checksum failed\n");
+ if (LOG_INVALID(net, IPPROTO_ICMPV6))
+ nf_log_packet(PF_INET6, 0, skb, NULL, NULL, NULL,
+ "nf_ct_icmpv6: ICMPv6 checksum failed ");
return -NF_ACCEPT;
}
diff --git a/net/ipv6/netfilter/nf_conntrack_reasm.c b/net/ipv6/netfilter/nf_conntrack_reasm.c
index ed4d79a9e4a..058a5e4a60c 100644
--- a/net/ipv6/netfilter/nf_conntrack_reasm.c
+++ b/net/ipv6/netfilter/nf_conntrack_reasm.c
@@ -528,14 +528,14 @@ find_prev_fhdr(struct sk_buff *skb, u8 *prevhdrp, int *prevhoff, int *fhoff)
if (!ipv6_ext_hdr(nexthdr)) {
return -1;
}
- if (len < (int)sizeof(struct ipv6_opt_hdr)) {
- pr_debug("too short\n");
- return -1;
- }
if (nexthdr == NEXTHDR_NONE) {
pr_debug("next header is none\n");
return -1;
}
+ if (len < (int)sizeof(struct ipv6_opt_hdr)) {
+ pr_debug("too short\n");
+ return -1;
+ }
if (skb_copy_bits(skb, start, &hdr, sizeof(hdr)))
BUG();
if (nexthdr == NEXTHDR_AUTH)
diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c
index 3c575118fca..e9ac7a12f59 100644
--- a/net/ipv6/reassembly.c
+++ b/net/ipv6/reassembly.c
@@ -452,6 +452,7 @@ err:
static int ip6_frag_reasm(struct frag_queue *fq, struct sk_buff *prev,
struct net_device *dev)
{
+ struct net *net = container_of(fq->q.net, struct net, ipv6.frags);
struct sk_buff *fp, *head = fq->q.fragments;
int payload_len;
unsigned int nhoff;
@@ -551,8 +552,7 @@ static int ip6_frag_reasm(struct frag_queue *fq, struct sk_buff *prev,
head->csum);
rcu_read_lock();
- IP6_INC_STATS_BH(dev_net(dev),
- __in6_dev_get(dev), IPSTATS_MIB_REASMOKS);
+ IP6_INC_STATS_BH(net, __in6_dev_get(dev), IPSTATS_MIB_REASMOKS);
rcu_read_unlock();
fq->q.fragments = NULL;
return 1;
@@ -566,8 +566,7 @@ out_oom:
printk(KERN_DEBUG "ip6_frag_reasm: no memory for reassembly\n");
out_fail:
rcu_read_lock();
- IP6_INC_STATS_BH(dev_net(dev),
- __in6_dev_get(dev), IPSTATS_MIB_REASMFAILS);
+ IP6_INC_STATS_BH(net, __in6_dev_get(dev), IPSTATS_MIB_REASMFAILS);
rcu_read_unlock();
return -1;
}
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index d3467e563f0..5cee2bcbcec 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -188,9 +188,9 @@ static struct ip_tunnel * ipip6_tunnel_locate(struct net *net,
}
nt = netdev_priv(dev);
- ipip6_tunnel_init(dev);
nt->parms = *parms;
+ ipip6_tunnel_init(dev);
if (parms->i_flags & SIT_ISATAP)
dev->priv_flags |= IFF_ISATAP;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-30 16:30:14 +0000