[DCCP]: Prepare the AF agnostic core for the introduction of DCCPv6

Basically exports a similar set of functions as the one exported by
the non-AF specific TCP code.

In the process moved some non-AF specific code from dccp_v4_connect to
dccp_connect_init and moved the checksum verification from
dccp_invalid_packet to dccp_v4_rcv, so as to use it in dccp_v6_rcv
too.

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

1 files changed, 22 insertions, 0 deletions

diff --git a/net/dccp/dccp.h b/net/dccp/dccp.h
index e711f850053b..93f26dd6e6cb 100644
--- a/net/dccp/dccp.h
+++ b/net/dccp/dccp.h
@@ -228,6 +228,9 @@ extern int dccp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
 extern int dccp_rcv_established(struct sock *sk, struct sk_buff *skb,
                                 const struct dccp_hdr *dh, const unsigned len);
 
+extern int dccp_v4_init_sock(struct sock *sk);
+extern int dccp_v4_destroy_sock(struct sock *sk);
+
 extern void             dccp_close(struct sock *sk, long timeout);
 extern struct sk_buff   *dccp_make_response(struct sock *sk,
                                             struct dst_entry *dst,
@@ -238,6 +241,7 @@ extern struct sk_buff	*dccp_make_reset(struct sock *sk,
 
 extern int         dccp_connect(struct sock *sk);
 extern int         dccp_disconnect(struct sock *sk, int flags);
+extern void        dccp_unhash(struct sock *sk);
 extern int         dccp_getsockopt(struct sock *sk, int level, int optname,
                                    char __user *optval, int __user *optlen);
 extern int         dccp_setsockopt(struct sock *sk, int level, int optname,
@@ -249,6 +253,13 @@ extern int	   dccp_recvmsg(struct kiocb *iocb, struct sock *sk,
                                 struct msghdr *msg, size_t len, int nonblock,
                                 int flags, int *addr_len);
 extern void        dccp_shutdown(struct sock *sk, int how);
+extern int         inet_dccp_listen(struct socket *sock, int backlog);
+extern unsigned int dccp_poll(struct file *file, struct socket *sock,
+                             poll_table *wait);
+extern void        dccp_v4_send_check(struct sock *sk, int len,
+                                      struct sk_buff *skb);
+extern int         dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr,
+                                   int addr_len);
 
 extern int         dccp_v4_checksum(const struct sk_buff *skb,
                                     const u32 saddr, const u32 daddr);
@@ -256,6 +267,17 @@ extern int	   dccp_v4_checksum(const struct sk_buff *skb,
 extern int         dccp_v4_send_reset(struct sock *sk,
                                       enum dccp_reset_codes code);
 extern void        dccp_send_close(struct sock *sk, const int active);
+extern int         dccp_invalid_packet(struct sk_buff *skb);
+
+static inline int dccp_bad_service_code(const struct sock *sk,
+                                        const __u32 service)
+{
+        const struct dccp_sock *dp = dccp_sk(sk);
+
+        if (dp->dccps_service == service)
+                return 0;
+        return !dccp_list_has_service(dp->dccps_service_list, service);
+}
 
 struct dccp_skb_cb {
         __u8  dccpd_type:4;