ipv6: introduce ipv6_make_skb
This commit is very similar to
commit 1c32c5ad6fac8cee1a77449f5abf211e911ff830
Author: Herbert Xu <herbert@gondor.apana.org.au>
Date: Tue Mar 1 02:36:47 2011 +0000
inet: Add ip_make_skb and ip_finish_skb
It adds IPv6 version of the helpers ip6_make_skb and ip6_finish_skb.
The job of ip6_make_skb is to collect messages into an ipv6 packet
and poplulate ipv6 eader. The job of ip6_finish_skb is to transmit
the generated skb. Together they replicated the job of
ip6_push_pending_frames() while also provide the capability to be
called independently. This will be needed to add lockless UDP sendmsg
support.
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 4292929..8027ca5 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -788,6 +788,25 @@
void ip6_flush_pending_frames(struct sock *sk);
+int ip6_send_skb(struct sk_buff *skb);
+
+struct sk_buff *__ip6_make_skb(struct sock *sk, struct sk_buff_head *queue,
+ struct inet_cork_full *cork,
+ struct inet6_cork *v6_cork);
+struct sk_buff *ip6_make_skb(struct sock *sk,
+ int getfrag(void *from, char *to, int offset,
+ int len, int odd, struct sk_buff *skb),
+ void *from, int length, int transhdrlen,
+ int hlimit, int tclass, struct ipv6_txoptions *opt,
+ struct flowi6 *fl6, struct rt6_info *rt,
+ unsigned int flags, int dontfrag);
+
+static inline struct sk_buff *ip6_finish_skb(struct sock *sk)
+{
+ return __ip6_make_skb(sk, &sk->sk_write_queue, &inet_sk(sk)->cork,
+ &inet6_sk(sk)->cork);
+}
+
int ip6_dst_lookup(struct sock *sk, struct dst_entry **dst, struct flowi6 *fl6);
struct dst_entry *ip6_dst_lookup_flow(struct sock *sk, struct flowi6 *fl6,
const struct in6_addr *final_dst);