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

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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>
This commit is contained in:
Arnaldo Carvalho de Melo
2005-12-13 23:24:16 -08:00
committed by David S. Miller
parent 34ca686081
commit f21e68caa0
6 changed files with 114 additions and 52 deletions
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22
net/dccp/dccp.h
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@@ -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;