[INET_SOCK]: Move struct inet_sock & helper functions to net/inet_sock.h

To help in reducing the number of include dependencies, several files were
touched as they were getting needed headers indirectly for stuff they use.

Thanks also to Alan Menegotto for pointing out that net/dccp/proto.c had
linux/dccp.h include twice.

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

4 files changed, 8 insertions, 134 deletions

diff --git a/include/linux/dccp.h b/include/linux/dccp.h
index d0bdb49..088529f 100644
--- a/include/linux/dccp.h
+++ b/include/linux/dccp.h
@@ -192,10 +192,9 @@ enum {
 #include <linux/workqueue.h>
 
 #include <net/inet_connection_sock.h>
+#include <net/inet_sock.h>
 #include <net/inet_timewait_sock.h>
-#include <net/sock.h>
 #include <net/tcp_states.h>
-#include <net/tcp.h>
 
 enum dccp_state {
 	DCCP_OPEN	= TCP_ESTABLISHED,
diff --git a/include/linux/ip.h b/include/linux/ip.h
index 6ccc596..9e2eb9a 100644
--- a/include/linux/ip.h
+++ b/include/linux/ip.h
@@ -16,6 +16,7 @@
  */
 #ifndef _LINUX_IP_H
 #define _LINUX_IP_H
+#include <linux/types.h>
 #include <asm/byteorder.h>
 
 #define IPTOS_TOS_MASK		0x1E
@@ -78,131 +79,6 @@
 #define	IPOPT_TS_TSANDADDR	1		/* timestamps and addresses */
 #define	IPOPT_TS_PRESPEC	3		/* specified modules only */
 
-#ifdef __KERNEL__
-#include <linux/config.h>
-#include <linux/types.h>
-#include <net/request_sock.h>
-#include <net/sock.h>
-#include <linux/igmp.h>
-#include <net/flow.h>
-
-struct ip_options {
-  __u32		faddr;				/* Saved first hop address */
-  unsigned char	optlen;
-  unsigned char srr;
-  unsigned char rr;
-  unsigned char ts;
-  unsigned char is_setbyuser:1,			/* Set by setsockopt?			*/
-                is_data:1,			/* Options in __data, rather than skb	*/
-                is_strictroute:1,		/* Strict source route			*/
-                srr_is_hit:1,			/* Packet destination addr was our one	*/
-                is_changed:1,			/* IP checksum more not valid		*/	
-                rr_needaddr:1,			/* Need to record addr of outgoing dev	*/
-                ts_needtime:1,			/* Need to record timestamp		*/
-                ts_needaddr:1;			/* Need to record addr of outgoing dev  */
-  unsigned char router_alert;
-  unsigned char __pad1;
-  unsigned char __pad2;
-  unsigned char __data[0];
-};
-
-#define optlength(opt) (sizeof(struct ip_options) + opt->optlen)
-
-struct inet_request_sock {
-	struct request_sock	req;
-#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
-	u16			inet6_rsk_offset;
-	/* 2 bytes hole, try to pack */
-#endif
-	u32			loc_addr;
-	u32			rmt_addr;
-	u16			rmt_port;
-	u16			snd_wscale : 4, 
-				rcv_wscale : 4, 
-				tstamp_ok  : 1,
-				sack_ok	   : 1,
-				wscale_ok  : 1,
-				ecn_ok	   : 1,
-				acked	   : 1;
-	struct ip_options	*opt;
-};
-
-static inline struct inet_request_sock *inet_rsk(const struct request_sock *sk)
-{
-	return (struct inet_request_sock *)sk;
-}
-
-struct ipv6_pinfo;
-
-struct inet_sock {
-	/* sk and pinet6 has to be the first two members of inet_sock */
-	struct sock		sk;
-#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
-	struct ipv6_pinfo	*pinet6;
-#endif
-	/* Socket demultiplex comparisons on incoming packets. */
-	__u32			daddr;		/* Foreign IPv4 addr */
-	__u32			rcv_saddr;	/* Bound local IPv4 addr */
-	__u16			dport;		/* Destination port */
-	__u16			num;		/* Local port */
-	__u32			saddr;		/* Sending source */
-	__s16			uc_ttl;		/* Unicast TTL */
-	__u16			cmsg_flags;
-	struct ip_options	*opt;
-	__u16			sport;		/* Source port */
-	__u16			id;		/* ID counter for DF pkts */
-	__u8			tos;		/* TOS */
-	__u8			mc_ttl;		/* Multicasting TTL */
-	__u8			pmtudisc;
-	unsigned		recverr : 1,
-				is_icsk : 1,	/* inet_connection_sock? */
-				freebind : 1,
-				hdrincl : 1,
-				mc_loop : 1;
-	int			mc_index;	/* Multicast device index */
-	__u32			mc_addr;
-	struct ip_mc_socklist	*mc_list;	/* Group array */
-	/*
-	 * Following members are used to retain the infomation to build
-	 * an ip header on each ip fragmentation while the socket is corked.
-	 */
-	struct {
-		unsigned int		flags;
-		unsigned int		fragsize;
-		struct ip_options	*opt;
-		struct rtable		*rt;
-		int			length; /* Total length of all frames */
-		u32			addr;
-		struct flowi		fl;
-	} cork;
-};
-
-#define IPCORK_OPT	1	/* ip-options has been held in ipcork.opt */
-#define IPCORK_ALLFRAG	2	/* always fragment (for ipv6 for now) */
-
-static inline struct inet_sock *inet_sk(const struct sock *sk)
-{
-	return (struct inet_sock *)sk;
-}
-
-static inline void __inet_sk_copy_descendant(struct sock *sk_to,
-					     const struct sock *sk_from,
-					     const int ancestor_size)
-{
-	memcpy(inet_sk(sk_to) + 1, inet_sk(sk_from) + 1,
-	       sk_from->sk_prot->obj_size - ancestor_size);
-}
-#if !(defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE))
-static inline void inet_sk_copy_descendant(struct sock *sk_to,
-					   const struct sock *sk_from)
-{
-	__inet_sk_copy_descendant(sk_to, sk_from, sizeof(struct inet_sock));
-}
-#endif
-#endif
-
-extern int inet_sk_rebuild_header(struct sock *sk);
-
 struct iphdr {
 #if defined(__LITTLE_ENDIAN_BITFIELD)
 	__u8	ihl:4,
diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
index a0d0489..93bbed5 100644
--- a/include/linux/ipv6.h
+++ b/include/linux/ipv6.h
@@ -171,12 +171,13 @@ enum {
 };
 
 #ifdef __KERNEL__
-#include <linux/in6.h>          /* struct sockaddr_in6 */
 #include <linux/icmpv6.h>
-#include <net/if_inet6.h>       /* struct ipv6_mc_socklist */
 #include <linux/tcp.h>
 #include <linux/udp.h>
 
+#include <net/if_inet6.h>       /* struct ipv6_mc_socklist */
+#include <net/inet_sock.h>
+
 /* 
    This structure contains results of exthdrs parsing
    as offsets from skb->nh.
@@ -346,8 +347,6 @@ static inline void inet_sk_copy_descendant(struct sock *sk_to,
 #define __ipv6_only_sock(sk)	(inet6_sk(sk)->ipv6only)
 #define ipv6_only_sock(sk)	((sk)->sk_family == PF_INET6 && __ipv6_only_sock(sk))
 
-#include <linux/tcp.h>
-
 struct inet6_timewait_sock {
 	struct in6_addr tw_v6_daddr;
 	struct in6_addr	tw_v6_rcv_saddr;
diff --git a/include/linux/udp.h b/include/linux/udp.h
index b60e0b4..85a5565 100644
--- a/include/linux/udp.h
+++ b/include/linux/udp.h
@@ -35,10 +35,10 @@ struct udphdr {
 #define UDP_ENCAP_ESPINUDP	2 /* draft-ietf-ipsec-udp-encaps-06 */
 
 #ifdef __KERNEL__
-
 #include <linux/config.h>
-#include <net/sock.h>
-#include <linux/ip.h>
+#include <linux/types.h>
+
+#include <net/inet_sock.h>
 
 struct udp_sock {
 	/* inet_sock has to be the first member */