1 files changed, 24 insertions, 17 deletions

diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index fff5bdd8b680..b4ff0a42b8c7 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -124,15 +124,6 @@ static __inline__ void icmpv6_xmit_unlock(struct sock *sk)
 }
 
 /*
- * Slightly more convenient version of icmpv6_send.
- */
-void icmpv6_param_prob(struct sk_buff *skb, u8 code, int pos)
-{
-        icmpv6_send(skb, ICMPV6_PARAMPROB, code, pos);
-        kfree_skb(skb);
-}
-
-/*
  * Figure out, may we reply to this packet with icmp error.
  *
  * We do not reply, if:
@@ -332,7 +323,7 @@ static struct dst_entry *icmpv6_route_lookup(struct net *net, struct sk_buff *sk
          * anycast.
          */
         if (((struct rt6_info *)dst)->rt6i_flags & RTF_ANYCAST) {
-                LIMIT_NETDEBUG(KERN_DEBUG "icmpv6_send: acast source\n");
+                LIMIT_NETDEBUG(KERN_DEBUG "icmp6_send: acast source\n");
                 dst_release(dst);
                 return ERR_PTR(-EINVAL);
         }
@@ -381,7 +372,7 @@ relookup_failed:
 /*
  *      Send an ICMP message in response to a packet in error
  */
-void icmpv6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info)
+static void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info)
 {
         struct net *net = dev_net(skb->dev);
         struct inet6_dev *idev = NULL;
@@ -406,7 +397,7 @@ void icmpv6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info)
         /*
          *      Make sure we respect the rules
          *      i.e. RFC 1885 2.4(e)
-         *      Rule (e.1) is enforced by not using icmpv6_send
+         *      Rule (e.1) is enforced by not using icmp6_send
          *      in any code that processes icmp errors.
          */
         addr_type = ipv6_addr_type(&hdr->daddr);
@@ -434,7 +425,7 @@ void icmpv6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info)
          *      Source addr check
          */
 
-        if (addr_type & IPV6_ADDR_LINKLOCAL)
+        if (__ipv6_addr_needs_scope_id(addr_type))
                 iif = skb->dev->ifindex;
 
         /*
@@ -444,7 +435,7 @@ void icmpv6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info)
          *      and anycast addresses will be checked later.
          */
         if ((addr_type == IPV6_ADDR_ANY) || (addr_type & IPV6_ADDR_MULTICAST)) {
-                LIMIT_NETDEBUG(KERN_DEBUG "icmpv6_send: addr_any/mcast source\n");
+                LIMIT_NETDEBUG(KERN_DEBUG "icmp6_send: addr_any/mcast source\n");
                 return;
         }
 
@@ -452,7 +443,7 @@ void icmpv6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info)
          *      Never answer to a ICMP packet.
          */
         if (is_ineligible(skb)) {
-                LIMIT_NETDEBUG(KERN_DEBUG "icmpv6_send: no reply to icmp error\n");
+                LIMIT_NETDEBUG(KERN_DEBUG "icmp6_send: no reply to icmp error\n");
                 return;
         }
 
@@ -529,7 +520,14 @@ out_dst_release:
 out:
         icmpv6_xmit_unlock(sk);
 }
-EXPORT_SYMBOL(icmpv6_send);
+
+/* Slightly more convenient version of icmp6_send.
+ */
+void icmpv6_param_prob(struct sk_buff *skb, u8 code, int pos)
+{
+        icmp6_send(skb, ICMPV6_PARAMPROB, code, pos);
+        kfree_skb(skb);
+}
 
 static void icmpv6_echo_reply(struct sk_buff *skb)
 {
@@ -701,7 +699,7 @@ static int icmpv6_rcv(struct sk_buff *skb)
                 if (__skb_checksum_complete(skb)) {
                         LIMIT_NETDEBUG(KERN_DEBUG "ICMPv6 checksum failed [%pI6 > %pI6]\n",
                                        saddr, daddr);
-                        goto discard_it;
+                        goto csum_error;
                 }
         }
 
@@ -787,6 +785,8 @@ static int icmpv6_rcv(struct sk_buff *skb)
         kfree_skb(skb);
         return 0;
 
+csum_error:
+        ICMP6_INC_STATS_BH(dev_net(dev), idev, ICMP6_MIB_CSUMERRORS);
 discard_it:
         ICMP6_INC_STATS_BH(dev_net(dev), idev, ICMP6_MIB_INERRORS);
 drop_no_count:
@@ -885,8 +885,14 @@ int __init icmpv6_init(void)
         err = -EAGAIN;
         if (inet6_add_protocol(&icmpv6_protocol, IPPROTO_ICMPV6) < 0)
                 goto fail;
+
+        err = inet6_register_icmp_sender(icmp6_send);
+        if (err)
+                goto sender_reg_err;
         return 0;
 
+sender_reg_err:
+        inet6_del_protocol(&icmpv6_protocol, IPPROTO_ICMPV6);
 fail:
         pr_err("Failed to register ICMP6 protocol\n");
         unregister_pernet_subsys(&icmpv6_sk_ops);
@@ -895,6 +901,7 @@ fail:
 
 void icmpv6_cleanup(void)
 {
+        inet6_unregister_icmp_sender(icmp6_send);
         unregister_pernet_subsys(&icmpv6_sk_ops);
         inet6_del_protocol(&icmpv6_protocol, IPPROTO_ICMPV6);
 }