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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [include/] [net/] [ip.h] - Blame information for rev 1765

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Line No. Rev Author Line
1 1633 jcastillo
/*
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 * INET         An implementation of the TCP/IP protocol suite for the LINUX
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 *              operating system.  INET is implemented using the  BSD Socket
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 *              interface as the means of communication with the user level.
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 *
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 *              Definitions for the IP module.
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 *
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 * Version:     @(#)ip.h        1.0.2   05/07/93
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 *
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 * Authors:     Ross Biro, <bir7@leland.Stanford.Edu>
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 *              Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
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 *              Alan Cox, <gw4pts@gw4pts.ampr.org>
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 *
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 *              This program is free software; you can redistribute it and/or
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 *              modify it under the terms of the GNU General Public License
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 *              as published by the Free Software Foundation; either version
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 *              2 of the License, or (at your option) any later version.
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 */
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#ifndef _IP_H
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#define _IP_H
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#include <linux/config.h>
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#include <linux/types.h>
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#include <linux/socket.h>
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#include <linux/ip.h>
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#include <linux/netdevice.h>
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#include <net/route.h>
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#ifndef _SNMP_H
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#include <net/snmp.h>
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#endif
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#include <net/sock.h>   /* struct sock */
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/* IP flags. */
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#define IP_CE           0x8000          /* Flag: "Congestion"           */
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#define IP_DF           0x4000          /* Flag: "Don't Fragment"       */
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#define IP_MF           0x2000          /* Flag: "More Fragments"       */
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#define IP_OFFSET       0x1FFF          /* "Fragment Offset" part       */
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#define IP_FRAG_TIME    (30 * HZ)               /* fragment lifetime    */
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#ifdef CONFIG_IP_MULTICAST
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extern void             ip_mc_dropsocket(struct sock *);
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extern void             ip_mc_dropdevice(struct device *dev);
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extern int              ip_mc_procinfo(char *, char **, off_t, int, int);
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#endif
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#include <net/ip_forward.h> 
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/* Describe an IP fragment. */
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struct ipfrag
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{
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        int             offset;         /* offset of fragment in IP datagram    */
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        int             end;            /* last byte of data in datagram        */
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        int             len;            /* length of this fragment              */
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        struct sk_buff  *skb;           /* complete received fragment           */
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        unsigned char   *ptr;           /* pointer into real fragment data      */
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        struct ipfrag   *next;          /* linked list pointers                 */
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        struct ipfrag   *prev;
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};
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/*
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 *      Describe an entry in the "incomplete datagrams" queue.
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 */
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struct ipq
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{
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        unsigned char   *mac;           /* pointer to MAC header                */
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        struct iphdr    *iph;           /* pointer to IP header                 */
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        int             len;            /* total length of original datagram    */
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        short           ihlen;          /* length of the IP header              */
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        short           maclen;         /* length of the MAC header             */
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        struct timer_list timer;        /* when will this queue expire?         */
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        struct ipfrag   *fragments;     /* linked list of received fragments    */
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        struct ipq      *next;          /* linked list pointers                 */
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        struct ipq      *prev;
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        struct device   *dev;           /* Device - for icmp replies */
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};
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/*
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 *      Functions provided by ip.c
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 */
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extern void             ip_print(const struct iphdr *ip);
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extern int              ip_ioctl(struct sock *sk, int cmd, unsigned long arg);
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extern void             ip_route_check(__u32 daddr);
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extern int              ip_send(struct rtable *rt, struct sk_buff *skb, __u32 daddr, int len, struct device *dev, __u32 saddr);
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extern int              ip_build_header(struct sk_buff *skb,
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                                        __u32 saddr,
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                                        __u32 daddr,
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                                        struct device **dev, int type,
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                                        struct options *opt, int len,
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                                        int tos,int ttl,struct rtable **rp);
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extern int              ip_rcv(struct sk_buff *skb, struct device *dev,
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                               struct packet_type *pt);
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extern int              ip_options_echo(struct options * dopt, struct options * sopt,
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                                        __u32 daddr, __u32 saddr,
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                                        struct sk_buff * skb);
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extern int              ip_options_compile(struct options * opt, struct sk_buff * skb);
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extern void             ip_send_check(struct iphdr *ip);
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extern int              ip_id_count;
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extern void             ip_queue_xmit(struct sock *sk,
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                                      struct device *dev, struct sk_buff *skb,
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                                      int free);
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extern void             ip_init(void);
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extern int              ip_build_xmit(struct sock *sk,
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                                      void getfrag (const void *,
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                                                    __u32,
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                                                    char *,
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                                                    unsigned int,
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                                                    unsigned int),
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                                      const void *frag,
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                                      unsigned short int length,
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                                      __u32 daddr,
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                                      __u32 saddr,
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                                      struct options * opt,
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                                      int flags,
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                                      int type,
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                                      int noblock);
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extern struct ip_mib    ip_statistics;
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extern int sysctl_ip_dynaddr;
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int ip_rewrite_addrs(struct sock *sk, struct sk_buff *skb, struct device *dev);
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/*
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 *      Functions provided by ip_fragment.o
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 */
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struct sk_buff *ip_defrag(struct iphdr *iph, struct sk_buff *skb, struct device *dev);
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void ip_fragment(struct sock *sk, struct sk_buff *skb, struct device *dev, int is_frag);
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/*
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 *      Functions provided by ip_forward.c
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 */
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extern int ip_forward(struct sk_buff *skb, struct device *dev, int is_frag, __u32 target_addr);
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extern int sysctl_ip_forward;
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/*
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 *      Functions provided by ip_options.c
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 */
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extern void ip_options_build(struct sk_buff *skb, struct options *opt, __u32 daddr, __u32 saddr, int is_frag);
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extern int ip_options_echo(struct options *dopt, struct options *sopt, __u32 daddr, __u32 saddr, struct sk_buff *skb);
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extern void ip_options_fragment(struct sk_buff *skb);
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extern int ip_options_compile(struct options *opt, struct sk_buff *skb);
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/*
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 *      Functions provided by ip_sockglue.c
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 */
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extern int              ip_setsockopt(struct sock *sk, int level, int optname, char *optval, int optlen);
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extern int              ip_getsockopt(struct sock *sk, int level, int optname, char *optval, int *optlen);
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#endif  /* _IP_H */

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