[PATCH] make more file_operation structs static

[linux-2.6-omap-h63xx.git] / net / ipv6 / ipv6_sockglue.c

diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index 602feec477381ff03f5e598ba533cad8c750de83..c28e5c287447105d36334b480f02b912deb0a2af 100644 (file)
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -27,7 +27,6 @@
 
 #include <linux/module.h>
 #include <linux/capability.h>
-#include <linux/config.h>
 #include <linux/errno.h>
 #include <linux/types.h>
 #include <linux/socket.h>
@@ -58,9 +57,71 @@
 
 DEFINE_SNMP_STAT(struct ipstats_mib, ipv6_statistics) __read_mostly;
 
+static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb, int features)
+{
+       struct sk_buff *segs = ERR_PTR(-EINVAL);
+       struct ipv6hdr *ipv6h;
+       struct inet6_protocol *ops;
+       int proto;
+
+       if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h))))
+               goto out;
+
+       ipv6h = skb->nh.ipv6h;
+       proto = ipv6h->nexthdr;
+       __skb_pull(skb, sizeof(*ipv6h));
+
+       rcu_read_lock();
+       for (;;) {
+               struct ipv6_opt_hdr *opth;
+               int len;
+
+               if (proto != NEXTHDR_HOP) {
+                       ops = rcu_dereference(inet6_protos[proto]);
+
+                       if (unlikely(!ops))
+                               goto unlock;
+
+                       if (!(ops->flags & INET6_PROTO_GSO_EXTHDR))
+                               break;
+               }
+
+               if (unlikely(!pskb_may_pull(skb, 8)))
+                       goto unlock;
+
+               opth = (void *)skb->data;
+               len = opth->hdrlen * 8 + 8;
+
+               if (unlikely(!pskb_may_pull(skb, len)))
+                       goto unlock;
+
+               proto = opth->nexthdr;
+               __skb_pull(skb, len);
+       }
+
+       skb->h.raw = skb->data;
+       if (likely(ops->gso_segment))
+               segs = ops->gso_segment(skb, features);
+
+unlock:
+       rcu_read_unlock();
+
+       if (unlikely(IS_ERR(segs)))
+               goto out;
+
+       for (skb = segs; skb; skb = skb->next) {
+               ipv6h = skb->nh.ipv6h;
+               ipv6h->payload_len = htons(skb->len - skb->mac_len);
+       }
+
+out:
+       return segs;
+}
+
 static struct packet_type ipv6_packet_type = {
        .type = __constant_htons(ETH_P_IPV6), 
        .func = ipv6_rcv,
+       .gso_segment = ipv6_gso_segment,
 };
 
 struct ip6_ra_chain *ip6_ra_chain;
@@ -907,7 +968,7 @@ int ipv6_getsockopt(struct sock *sk, int level, int optname,
        err = do_ipv6_getsockopt(sk, level, optname, optval, optlen);
 #ifdef CONFIG_NETFILTER
        /* we need to exclude all possible EINVALs except default case */
-       if (err == -ENOPROTOOPT && optname != IPV6_ADDRFORM &&
+       if (err == -EINVAL && optname != IPV6_ADDRFORM &&
                        optname != MCAST_MSFILTER) {
                int len;
 
@@ -944,7 +1005,7 @@ int compat_ipv6_getsockopt(struct sock *sk, int level, int optname,
        err = do_ipv6_getsockopt(sk, level, optname, optval, optlen);
 #ifdef CONFIG_NETFILTER
        /* we need to exclude all possible EINVALs except default case */
-       if (err == -ENOPROTOOPT && optname != IPV6_ADDRFORM &&
+       if (err == -EINVAL && optname != IPV6_ADDRFORM &&
                        optname != MCAST_MSFILTER) {
                int len;