[DCCP]: Move the IPv4 specific bits from proto.c to ipv4.c

With this patch in place we can break down the complexity by better
compartmentalizing the code that is common to ipv6 and ipv4.

Now we have these modules:
Module                  Size  Used by
dccp_diag               1344  0
inet_diag               9448  1 dccp_diag
dccp_ccid3             15856  0
dccp_tfrc_lib          12320  1 dccp_ccid3
dccp_ccid2              5764  0
dccp_ipv4              16996  2
dccp                   48208  4 dccp_diag,dccp_ccid3,dccp_ccid2,dccp_ipv4

dccp_ipv6 still requires dccp_ipv4 due to dccp_ipv6_mapped, that is
the next target to work on the "hey, ipv4 is legacy, I only want ipv6
dude!" direction.

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 6 deletions

diff --git a/net/dccp/dccp.h b/net/dccp/dccp.h
index b6ea4cc12608..46aa4814d65f 100644
--- a/net/dccp/dccp.h
+++ b/net/dccp/dccp.h
@@ -59,8 +59,6 @@ extern void dccp_time_wait(struct sock *sk, int state, int timeo);
 
 #define DCCP_RTO_MAX ((unsigned)(120 * HZ)) /* FIXME: using TCP value */
 
-extern struct proto dccp_prot;
-
 /* is seq1 < seq2 ? */
 static inline int before48(const u64 seq1, const u64 seq2)
 {
@@ -209,10 +207,6 @@ extern struct sock *dccp_create_openreq_child(struct sock *sk,
 
 extern int dccp_v4_do_rcv(struct sock *sk, struct sk_buff *skb);
 
-extern void dccp_v4_err(struct sk_buff *skb, u32);
-
-extern int dccp_v4_rcv(struct sk_buff *skb);
-
 extern struct sock *dccp_v4_request_recv_sock(struct sock *sk,
                                               struct sk_buff *skb,
                                               struct request_sock *req,