#include <net/ip6_route.h>
#include <net/addrconf.h>
#include <net/icmp.h>
+#include <net/xfrm.h>
#include <asm/uaccess.h>
#include <asm/system.h>
*
* On SMP we have one ICMP socket per-cpu.
*/
-static DEFINE_PER_CPU(struct socket *, __icmpv6_socket) = NULL;
-#define icmpv6_socket __get_cpu_var(__icmpv6_socket)
+static inline struct sock *icmpv6_sk(struct net *net)
+{
+ return net->ipv6.icmp_sk[smp_processor_id()];
+}
static int icmpv6_rcv(struct sk_buff *skb);
static struct inet6_protocol icmpv6_protocol = {
.handler = icmpv6_rcv,
- .flags = INET6_PROTO_FINAL,
+ .flags = INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL,
};
-static __inline__ int icmpv6_xmit_lock(void)
+static __inline__ int icmpv6_xmit_lock(struct sock *sk)
{
local_bh_disable();
- if (unlikely(!spin_trylock(&icmpv6_socket->sk->sk_lock.slock))) {
+ if (unlikely(!spin_trylock(&sk->sk_lock.slock))) {
/* This can happen if the output path (f.e. SIT or
* ip6ip6 tunnel) signals dst_link_failure() for an
* outgoing ICMP6 packet.
return 0;
}
-static __inline__ void icmpv6_xmit_unlock(void)
+static __inline__ void icmpv6_xmit_unlock(struct sock *sk)
{
- spin_unlock_bh(&icmpv6_socket->sk->sk_lock.slock);
+ spin_unlock_bh(&sk->sk_lock.slock);
}
/*
return 0;
}
-static int sysctl_icmpv6_time __read_mostly = 1*HZ;
-
/*
* Check the ICMP output rate limit
*/
res = 1;
} else {
struct rt6_info *rt = (struct rt6_info *)dst;
- int tmo = sysctl_icmpv6_time;
+ int tmo = init_net.ipv6.sysctl.icmpv6_time;
/* Give more bandwidth to wider prefixes. */
if (rt->rt6i_dst.plen < 128)
struct ipv6_pinfo *np;
struct in6_addr *saddr = NULL;
struct dst_entry *dst;
+ struct dst_entry *dst2;
struct icmp6hdr tmp_hdr;
struct flowi fl;
+ struct flowi fl2;
struct icmpv6_msg msg;
int iif = 0;
int addr_type = 0;
*/
addr_type = ipv6_addr_type(&hdr->daddr);
- if (ipv6_chk_addr(&hdr->daddr, skb->dev, 0))
+ if (ipv6_chk_addr(&init_net, &hdr->daddr, skb->dev, 0))
saddr = &hdr->daddr;
/*
fl.fl_icmp_code = code;
security_skb_classify_flow(skb, &fl);
- if (icmpv6_xmit_lock())
- return;
-
- sk = icmpv6_socket->sk;
+ sk = icmpv6_sk(&init_net);
np = inet6_sk(sk);
+ if (icmpv6_xmit_lock(sk))
+ return;
+
if (!icmpv6_xrlim_allow(sk, type, &fl))
goto out;
goto out_dst_release;
}
- if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0)
+ /* No need to clone since we're just using its address. */
+ dst2 = dst;
+
+ err = xfrm_lookup(&dst, &fl, sk, 0);
+ switch (err) {
+ case 0:
+ if (dst != dst2)
+ goto route_done;
+ break;
+ case -EPERM:
+ dst = NULL;
+ break;
+ default:
+ goto out;
+ }
+
+ if (xfrm_decode_session_reverse(skb, &fl2, AF_INET6))
+ goto out;
+
+ if (ip6_dst_lookup(sk, &dst2, &fl))
+ goto out;
+
+ err = xfrm_lookup(&dst2, &fl, sk, XFRM_LOOKUP_ICMP);
+ if (err == -ENOENT) {
+ if (!dst)
+ goto out;
+ goto route_done;
+ }
+
+ dst_release(dst);
+ dst = dst2;
+
+ if (err)
goto out;
+route_done:
if (ipv6_addr_is_multicast(&fl.fl6_dst))
hlimit = np->mcast_hops;
else
}
err = icmpv6_push_pending_frames(sk, &fl, &tmp_hdr, len + sizeof(struct icmp6hdr));
- ICMP6_INC_STATS_BH(idev, ICMP6_MIB_OUTMSGS);
-
out_put:
if (likely(idev != NULL))
in6_dev_put(idev);
out_dst_release:
dst_release(dst);
out:
- icmpv6_xmit_unlock();
+ icmpv6_xmit_unlock(sk);
}
EXPORT_SYMBOL(icmpv6_send);
fl.fl_icmp_type = ICMPV6_ECHO_REPLY;
security_skb_classify_flow(skb, &fl);
- if (icmpv6_xmit_lock())
- return;
-
- sk = icmpv6_socket->sk;
+ sk = icmpv6_sk(&init_net);
np = inet6_sk(sk);
+ if (icmpv6_xmit_lock(sk))
+ return;
+
if (!fl.oif && ipv6_addr_is_multicast(&fl.fl6_dst))
fl.oif = np->mcast_oif;
in6_dev_put(idev);
dst_release(dst);
out:
- icmpv6_xmit_unlock();
+ icmpv6_xmit_unlock(sk);
}
static void icmpv6_notify(struct sk_buff *skb, int type, int code, __be32 info)
{
- struct in6_addr *saddr, *daddr;
struct inet6_protocol *ipprot;
- struct sock *sk;
int inner_offset;
int hash;
u8 nexthdr;
if (!pskb_may_pull(skb, inner_offset+8))
return;
- saddr = &ipv6_hdr(skb)->saddr;
- daddr = &ipv6_hdr(skb)->daddr;
-
/* BUGGG_FUTURE: we should try to parse exthdrs in this packet.
Without this we will not able f.e. to make source routed
pmtu discovery.
ipprot->err_handler(skb, NULL, type, code, inner_offset, info);
rcu_read_unlock();
- read_lock(&raw_v6_lock);
- if ((sk = sk_head(&raw_v6_htable[hash])) != NULL) {
- while ((sk = __raw_v6_lookup(sk, nexthdr, saddr, daddr,
- IP6CB(skb)->iif))) {
- rawv6_err(sk, skb, NULL, type, code, inner_offset, info);
- sk = sk_next(sk);
- }
- }
- read_unlock(&raw_v6_lock);
+ raw6_icmp_error(skb, nexthdr, type, code, inner_offset, info);
}
/*
struct icmp6hdr *hdr;
int type;
+ if (!xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb)) {
+ int nh;
+
+ if (!(skb->sp && skb->sp->xvec[skb->sp->len - 1]->props.flags &
+ XFRM_STATE_ICMP))
+ goto drop_no_count;
+
+ if (!pskb_may_pull(skb, sizeof(*hdr) + sizeof(*orig_hdr)))
+ goto drop_no_count;
+
+ nh = skb_network_offset(skb);
+ skb_set_network_header(skb, sizeof(*hdr));
+
+ if (!xfrm6_policy_check_reverse(NULL, XFRM_POLICY_IN, skb))
+ goto drop_no_count;
+
+ skb_set_network_header(skb, nh);
+ }
+
ICMP6_INC_STATS_BH(idev, ICMP6_MIB_INMSGS);
saddr = &ipv6_hdr(skb)->saddr;
}
}
- if (!pskb_pull(skb, sizeof(struct icmp6hdr)))
+ if (!pskb_pull(skb, sizeof(*hdr)))
goto discard_it;
hdr = icmp6_hdr(skb);
discard_it:
ICMP6_INC_STATS_BH(idev, ICMP6_MIB_INERRORS);
+drop_no_count:
kfree_skb(skb);
return 0;
}
/*
- * Special lock-class for __icmpv6_socket:
+ * Special lock-class for __icmpv6_sk:
*/
static struct lock_class_key icmpv6_socket_sk_dst_lock_key;
-int __init icmpv6_init(struct net_proto_family *ops)
+static int __net_init icmpv6_sk_init(struct net *net)
{
struct sock *sk;
int err, i, j;
+ net->ipv6.icmp_sk =
+ kzalloc(nr_cpu_ids * sizeof(struct sock *), GFP_KERNEL);
+ if (net->ipv6.icmp_sk == NULL)
+ return -ENOMEM;
+
for_each_possible_cpu(i) {
+ struct socket *sock;
err = sock_create_kern(PF_INET6, SOCK_RAW, IPPROTO_ICMPV6,
- &per_cpu(__icmpv6_socket, i));
+ &sock);
if (err < 0) {
printk(KERN_ERR
"Failed to initialize the ICMP6 control socket "
goto fail;
}
- sk = per_cpu(__icmpv6_socket, i)->sk;
+ net->ipv6.icmp_sk[i] = sk = sock->sk;
+ sk_change_net(sk, net);
+
sk->sk_allocation = GFP_ATOMIC;
/*
* Split off their lock-class, because sk->sk_dst_lock
* gets used from softirqs, which is safe for
- * __icmpv6_socket (because those never get directly used
+ * __icmpv6_sk (because those never get directly used
* via userspace syscalls), but unsafe for normal sockets.
*/
lockdep_set_class(&sk->sk_dst_lock,
sk->sk_prot->unhash(sk);
}
-
-
- if (inet6_add_protocol(&icmpv6_protocol, IPPROTO_ICMPV6) < 0) {
- printk(KERN_ERR "Failed to register ICMP6 protocol\n");
- err = -EAGAIN;
- goto fail;
- }
-
return 0;
fail:
- for (j = 0; j < i; j++) {
- if (!cpu_possible(j))
- continue;
- sock_release(per_cpu(__icmpv6_socket, j));
- }
-
+ for (j = 0; j < i; j++)
+ sk_release_kernel(net->ipv6.icmp_sk[j]);
+ kfree(net->ipv6.icmp_sk);
return err;
}
-void icmpv6_cleanup(void)
+static void __net_exit icmpv6_sk_exit(struct net *net)
{
int i;
for_each_possible_cpu(i) {
- sock_release(per_cpu(__icmpv6_socket, i));
+ sk_release_kernel(net->ipv6.icmp_sk[i]);
}
+ kfree(net->ipv6.icmp_sk);
+}
+
+static struct pernet_operations icmpv6_sk_ops = {
+ .init = icmpv6_sk_init,
+ .exit = icmpv6_sk_exit,
+};
+
+int __init icmpv6_init(void)
+{
+ int err;
+
+ err = register_pernet_subsys(&icmpv6_sk_ops);
+ if (err < 0)
+ return err;
+
+ err = -EAGAIN;
+ if (inet6_add_protocol(&icmpv6_protocol, IPPROTO_ICMPV6) < 0)
+ goto fail;
+ return 0;
+
+fail:
+ printk(KERN_ERR "Failed to register ICMP6 protocol\n");
+ unregister_pernet_subsys(&icmpv6_sk_ops);
+ return err;
+}
+
+void icmpv6_cleanup(void)
+{
+ unregister_pernet_subsys(&icmpv6_sk_ops);
inet6_del_protocol(&icmpv6_protocol, IPPROTO_ICMPV6);
}
+
static const struct icmp6_err {
int err;
int fatal;
EXPORT_SYMBOL(icmpv6_err_convert);
#ifdef CONFIG_SYSCTL
-ctl_table ipv6_icmp_table[] = {
+ctl_table ipv6_icmp_table_template[] = {
{
.ctl_name = NET_IPV6_ICMP_RATELIMIT,
.procname = "ratelimit",
- .data = &sysctl_icmpv6_time,
+ .data = &init_net.ipv6.sysctl.icmpv6_time,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec
},
{ .ctl_name = 0 },
};
+
+struct ctl_table *ipv6_icmp_sysctl_init(struct net *net)
+{
+ struct ctl_table *table;
+
+ table = kmemdup(ipv6_icmp_table_template,
+ sizeof(ipv6_icmp_table_template),
+ GFP_KERNEL);
+
+ if (table)
+ table[0].data = &net->ipv6.sysctl.icmpv6_time;
+
+ return table;
+}
#endif
projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blobdiff