Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 353 insertions, 0 deletions

diff --git a/include/net/ip.h b/include/net/ip.h
new file mode 100644
index 0000000..b4db137
--- /dev/null
+++ b/include/net/ip.h
@@ -0,0 +1,353 @@
+/*
+ * INET		An implementation of the TCP/IP protocol suite for the LINUX
+ *		operating system.  INET is implemented using the  BSD Socket
+ *		interface as the means of communication with the user level.
+ *
+ *		Definitions for the IP module.
+ *
+ * Version:	@(#)ip.h	1.0.2	05/07/93
+ *
+ * Authors:	Ross Biro, <bir7@leland.Stanford.Edu>
+ *		Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
+ *		Alan Cox, <gw4pts@gw4pts.ampr.org>
+ *
+ * Changes:
+ *		Mike McLagan    :       Routing by source
+ *
+ *		This program is free software; you can redistribute it and/or
+ *		modify it under the terms of the GNU General Public License
+ *		as published by the Free Software Foundation; either version
+ *		2 of the License, or (at your option) any later version.
+ */
+#ifndef _IP_H
+#define _IP_H
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/socket.h>
+#include <linux/ip.h>
+#include <linux/in.h>
+#include <linux/netdevice.h>
+#include <linux/inetdevice.h>
+#include <linux/in_route.h>
+#include <net/route.h>
+#include <net/arp.h>
+#include <net/snmp.h>
+
+struct sock;
+
+struct inet_skb_parm
+{
+	struct ip_options	opt;		/* Compiled IP options		*/
+	unsigned char		flags;
+
+#define IPSKB_MASQUERADED	1
+#define IPSKB_TRANSLATED	2
+#define IPSKB_FORWARDED		4
+#define IPSKB_XFRM_TUNNEL_SIZE	8
+};
+
+struct ipcm_cookie
+{
+	u32			addr;
+	int			oif;
+	struct ip_options	*opt;
+};
+
+#define IPCB(skb) ((struct inet_skb_parm*)((skb)->cb))
+
+struct ip_ra_chain
+{
+	struct ip_ra_chain	*next;
+	struct sock		*sk;
+	void			(*destructor)(struct sock *);
+};
+
+extern struct ip_ra_chain *ip_ra_chain;
+extern rwlock_t ip_ra_lock;
+
+/* IP flags. */
+#define IP_CE		0x8000		/* Flag: "Congestion"		*/
+#define IP_DF		0x4000		/* Flag: "Don't Fragment"	*/
+#define IP_MF		0x2000		/* Flag: "More Fragments"	*/
+#define IP_OFFSET	0x1FFF		/* "Fragment Offset" part	*/
+
+#define IP_FRAG_TIME	(30 * HZ)		/* fragment lifetime	*/
+
+extern void		ip_mc_dropsocket(struct sock *);
+extern void		ip_mc_dropdevice(struct net_device *dev);
+extern int		igmp_mc_proc_init(void);
+
+/*
+ *	Functions provided by ip.c
+ */
+
+extern int		ip_build_and_send_pkt(struct sk_buff *skb, struct sock *sk,
+					      u32 saddr, u32 daddr,
+					      struct ip_options *opt);
+extern int		ip_rcv(struct sk_buff *skb, struct net_device *dev,
+			       struct packet_type *pt);
+extern int		ip_local_deliver(struct sk_buff *skb);
+extern int		ip_mr_input(struct sk_buff *skb);
+extern int		ip_output(struct sk_buff *skb);
+extern int		ip_mc_output(struct sk_buff *skb);
+extern int		ip_fragment(struct sk_buff *skb, int (*out)(struct sk_buff*));
+extern int		ip_do_nat(struct sk_buff *skb);
+extern void		ip_send_check(struct iphdr *ip);
+extern int		ip_queue_xmit(struct sk_buff *skb, int ipfragok);
+extern void		ip_init(void);
+extern int		ip_append_data(struct sock *sk,
+				       int getfrag(void *from, char *to, int offset, int len,
+						   int odd, struct sk_buff *skb),
+				void *from, int len, int protolen,
+				struct ipcm_cookie *ipc,
+				struct rtable *rt,
+				unsigned int flags);
+extern int		ip_generic_getfrag(void *from, char *to, int offset, int len, int odd, struct sk_buff *skb);
+extern ssize_t		ip_append_page(struct sock *sk, struct page *page,
+				int offset, size_t size, int flags);
+extern int		ip_push_pending_frames(struct sock *sk);
+extern void		ip_flush_pending_frames(struct sock *sk);
+
+/* datagram.c */
+extern int		ip4_datagram_connect(struct sock *sk, 
+					     struct sockaddr *uaddr, int addr_len);
+
+/*
+ *	Map a multicast IP onto multicast MAC for type Token Ring.
+ *      This conforms to RFC1469 Option 2 Multicasting i.e.
+ *      using a functional address to transmit / receive 
+ *      multicast packets.
+ */
+
+static inline void ip_tr_mc_map(u32 addr, char *buf)
+{
+	buf[0]=0xC0;
+	buf[1]=0x00;
+	buf[2]=0x00;
+	buf[3]=0x04;
+	buf[4]=0x00;
+	buf[5]=0x00;
+}
+
+struct ip_reply_arg {
+	struct kvec iov[1];   
+	u32 	    csum; 
+	int	    csumoffset; /* u16 offset of csum in iov[0].iov_base */
+				/* -1 if not needed */ 
+}; 
+
+void ip_send_reply(struct sock *sk, struct sk_buff *skb, struct ip_reply_arg *arg,
+		   unsigned int len); 
+
+extern int ip_finish_output(struct sk_buff *skb);
+
+struct ipv4_config
+{
+	int	log_martians;
+	int	autoconfig;
+	int	no_pmtu_disc;
+};
+
+extern struct ipv4_config ipv4_config;
+DECLARE_SNMP_STAT(struct ipstats_mib, ip_statistics);
+#define IP_INC_STATS(field)		SNMP_INC_STATS(ip_statistics, field)
+#define IP_INC_STATS_BH(field)		SNMP_INC_STATS_BH(ip_statistics, field)
+#define IP_INC_STATS_USER(field) 	SNMP_INC_STATS_USER(ip_statistics, field)
+DECLARE_SNMP_STAT(struct linux_mib, net_statistics);
+#define NET_INC_STATS(field)		SNMP_INC_STATS(net_statistics, field)
+#define NET_INC_STATS_BH(field)		SNMP_INC_STATS_BH(net_statistics, field)
+#define NET_INC_STATS_USER(field) 	SNMP_INC_STATS_USER(net_statistics, field)
+#define NET_ADD_STATS_BH(field, adnd)	SNMP_ADD_STATS_BH(net_statistics, field, adnd)
+#define NET_ADD_STATS_USER(field, adnd)	SNMP_ADD_STATS_USER(net_statistics, field, adnd)
+
+extern int sysctl_local_port_range[2];
+extern int sysctl_ip_default_ttl;
+
+#ifdef CONFIG_INET
+/* The function in 2.2 was invalid, producing wrong result for
+ * check=0xFEFF. It was noticed by Arthur Skawina _year_ ago. --ANK(000625) */
+static inline
+int ip_decrease_ttl(struct iphdr *iph)
+{
+	u32 check = iph->check;
+	check += htons(0x0100);
+	iph->check = check + (check>=0xFFFF);
+	return --iph->ttl;
+}
+
+static inline
+int ip_dont_fragment(struct sock *sk, struct dst_entry *dst)
+{
+	return (inet_sk(sk)->pmtudisc == IP_PMTUDISC_DO ||
+		(inet_sk(sk)->pmtudisc == IP_PMTUDISC_WANT &&
+		 !(dst_metric(dst, RTAX_LOCK)&(1<<RTAX_MTU))));
+}
+
+extern void __ip_select_ident(struct iphdr *iph, struct dst_entry *dst, int more);
+
+static inline void ip_select_ident(struct iphdr *iph, struct dst_entry *dst, struct sock *sk)
+{
+	if (iph->frag_off & htons(IP_DF)) {
+		/* This is only to work around buggy Windows95/2000
+		 * VJ compression implementations.  If the ID field
+		 * does not change, they drop every other packet in
+		 * a TCP stream using header compression.
+		 */
+		iph->id = (sk && inet_sk(sk)->daddr) ?
+					htons(inet_sk(sk)->id++) : 0;
+	} else
+		__ip_select_ident(iph, dst, 0);
+}
+
+static inline void ip_select_ident_more(struct iphdr *iph, struct dst_entry *dst, struct sock *sk, int more)
+{
+	if (iph->frag_off & htons(IP_DF)) {
+		if (sk && inet_sk(sk)->daddr) {
+			iph->id = htons(inet_sk(sk)->id);
+			inet_sk(sk)->id += 1 + more;
+		} else
+			iph->id = 0;
+	} else
+		__ip_select_ident(iph, dst, more);
+}
+
+/*
+ *	Map a multicast IP onto multicast MAC for type ethernet.
+ */
+
+static inline void ip_eth_mc_map(u32 addr, char *buf)
+{
+	addr=ntohl(addr);
+	buf[0]=0x01;
+	buf[1]=0x00;
+	buf[2]=0x5e;
+	buf[5]=addr&0xFF;
+	addr>>=8;
+	buf[4]=addr&0xFF;
+	addr>>=8;
+	buf[3]=addr&0x7F;
+}
+
+/*
+ *	Map a multicast IP onto multicast MAC for type IP-over-InfiniBand.
+ *	Leave P_Key as 0 to be filled in by driver.
+ */
+
+static inline void ip_ib_mc_map(u32 addr, char *buf)
+{
+	buf[0]  = 0;		/* Reserved */
+	buf[1]  = 0xff;		/* Multicast QPN */
+	buf[2]  = 0xff;
+	buf[3]  = 0xff;
+	addr    = ntohl(addr);
+	buf[4]  = 0xff;
+	buf[5]  = 0x12;		/* link local scope */
+	buf[6]  = 0x40;		/* IPv4 signature */
+	buf[7]  = 0x1b;
+	buf[8]  = 0;		/* P_Key */
+	buf[9]  = 0;
+	buf[10] = 0;
+	buf[11] = 0;
+	buf[12] = 0;
+	buf[13] = 0;
+	buf[14] = 0;
+	buf[15] = 0;
+	buf[19] = addr & 0xff;
+	addr  >>= 8;
+	buf[18] = addr & 0xff;
+	addr  >>= 8;
+	buf[17] = addr & 0xff;
+	addr  >>= 8;
+	buf[16] = addr & 0x0f;
+}
+
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+#include <linux/ipv6.h>
+#endif
+
+static __inline__ void inet_reset_saddr(struct sock *sk)
+{
+	inet_sk(sk)->rcv_saddr = inet_sk(sk)->saddr = 0;
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+	if (sk->sk_family == PF_INET6) {
+		struct ipv6_pinfo *np = inet6_sk(sk);
+
+		memset(&np->saddr, 0, sizeof(np->saddr));
+		memset(&np->rcv_saddr, 0, sizeof(np->rcv_saddr));
+	}
+#endif
+}
+
+#endif
+
+extern int	ip_call_ra_chain(struct sk_buff *skb);
+
+/*
+ *	Functions provided by ip_fragment.o
+ */
+
+enum ip_defrag_users
+{
+	IP_DEFRAG_LOCAL_DELIVER,
+	IP_DEFRAG_CALL_RA_CHAIN,
+	IP_DEFRAG_CONNTRACK_IN,
+	IP_DEFRAG_CONNTRACK_OUT,
+	IP_DEFRAG_NAT_OUT,
+	IP_DEFRAG_VS_IN,
+	IP_DEFRAG_VS_OUT,
+	IP_DEFRAG_VS_FWD
+};
+
+struct sk_buff *ip_defrag(struct sk_buff *skb, u32 user);
+extern int ip_frag_nqueues;
+extern atomic_t ip_frag_mem;
+
+/*
+ *	Functions provided by ip_forward.c
+ */
+ 
+extern int ip_forward(struct sk_buff *skb);
+extern int ip_net_unreachable(struct sk_buff *skb);
+ 
+/*
+ *	Functions provided by ip_options.c
+ */
+ 
+extern void ip_options_build(struct sk_buff *skb, struct ip_options *opt, u32 daddr, struct rtable *rt, int is_frag);
+extern int ip_options_echo(struct ip_options *dopt, struct sk_buff *skb);
+extern void ip_options_fragment(struct sk_buff *skb);
+extern int ip_options_compile(struct ip_options *opt, struct sk_buff *skb);
+extern int ip_options_get(struct ip_options **optp, unsigned char *data, int optlen, int user);
+extern void ip_options_undo(struct ip_options * opt);
+extern void ip_forward_options(struct sk_buff *skb);
+extern int ip_options_rcv_srr(struct sk_buff *skb);
+
+/*
+ *	Functions provided by ip_sockglue.c
+ */
+
+extern void	ip_cmsg_recv(struct msghdr *msg, struct sk_buff *skb);
+extern int	ip_cmsg_send(struct msghdr *msg, struct ipcm_cookie *ipc);
+extern int	ip_setsockopt(struct sock *sk, int level, int optname, char __user *optval, int optlen);
+extern int	ip_getsockopt(struct sock *sk, int level, int optname, char __user *optval, int __user *optlen);
+extern int	ip_ra_control(struct sock *sk, unsigned char on, void (*destructor)(struct sock *));
+
+extern int 	ip_recv_error(struct sock *sk, struct msghdr *msg, int len);
+extern void	ip_icmp_error(struct sock *sk, struct sk_buff *skb, int err, 
+			      u16 port, u32 info, u8 *payload);
+extern void	ip_local_error(struct sock *sk, int err, u32 daddr, u16 dport,
+			       u32 info);
+
+/* sysctl helpers - any sysctl which holds a value that ends up being
+ * fed into the routing cache should use these handlers.
+ */
+int ipv4_doint_and_flush(ctl_table *ctl, int write,
+			 struct file* filp, void __user *buffer,
+			 size_t *lenp, loff_t *ppos);
+int ipv4_doint_and_flush_strategy(ctl_table *table, int __user *name, int nlen,
+				  void __user *oldval, size_t __user *oldlenp,
+				  void __user *newval, size_t newlen, 
+				  void **context);
+
+#endif	/* _IP_H */