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1.1 ! root 1: /* ! 2: * INET An implementation of the TCP/IP protocol suite for the LINUX ! 3: * operating system. INET is implemented using the BSD Socket ! 4: * interface as the means of communication with the user level. ! 5: * ! 6: * Definitions for the IP module. ! 7: * ! 8: * Version: @(#)ip.h 1.0.2 05/07/93 ! 9: * ! 10: * Authors: Ross Biro, <[email protected]> ! 11: * Fred N. van Kempen, <[email protected]> ! 12: * Alan Cox, <[email protected]> ! 13: * ! 14: * This program is free software; you can redistribute it and/or ! 15: * modify it under the terms of the GNU General Public License ! 16: * as published by the Free Software Foundation; either version ! 17: * 2 of the License, or (at your option) any later version. ! 18: */ ! 19: #ifndef _IP_H ! 20: #define _IP_H ! 21: ! 22: ! 23: #include <linux/config.h> ! 24: #include <linux/types.h> ! 25: #include <linux/socket.h> ! 26: #include <linux/ip.h> ! 27: #include <linux/netdevice.h> ! 28: #include <net/route.h> ! 29: ! 30: #ifndef _SNMP_H ! 31: #include <net/snmp.h> ! 32: #endif ! 33: ! 34: #include <net/sock.h> /* struct sock */ ! 35: ! 36: /* IP flags. */ ! 37: #define IP_CE 0x8000 /* Flag: "Congestion" */ ! 38: #define IP_DF 0x4000 /* Flag: "Don't Fragment" */ ! 39: #define IP_MF 0x2000 /* Flag: "More Fragments" */ ! 40: #define IP_OFFSET 0x1FFF /* "Fragment Offset" part */ ! 41: ! 42: #define IP_FRAG_TIME (30 * HZ) /* fragment lifetime */ ! 43: ! 44: #ifdef CONFIG_IP_MULTICAST ! 45: extern void ip_mc_dropsocket(struct sock *); ! 46: extern void ip_mc_dropdevice(struct device *dev); ! 47: extern int ip_mc_procinfo(char *, char **, off_t, int, int); ! 48: #endif ! 49: ! 50: #include <net/ip_forward.h> ! 51: ! 52: /* Describe an IP fragment. */ ! 53: struct ipfrag ! 54: { ! 55: int offset; /* offset of fragment in IP datagram */ ! 56: int end; /* last byte of data in datagram */ ! 57: int len; /* length of this fragment */ ! 58: struct sk_buff *skb; /* complete received fragment */ ! 59: unsigned char *ptr; /* pointer into real fragment data */ ! 60: struct ipfrag *next; /* linked list pointers */ ! 61: struct ipfrag *prev; ! 62: }; ! 63: ! 64: /* ! 65: * Describe an entry in the "incomplete datagrams" queue. ! 66: */ ! 67: ! 68: struct ipq ! 69: { ! 70: unsigned char *mac; /* pointer to MAC header */ ! 71: struct iphdr *iph; /* pointer to IP header */ ! 72: int len; /* total length of original datagram */ ! 73: short ihlen; /* length of the IP header */ ! 74: short maclen; /* length of the MAC header */ ! 75: struct timer_list timer; /* when will this queue expire? */ ! 76: struct ipfrag *fragments; /* linked list of received fragments */ ! 77: struct ipq *next; /* linked list pointers */ ! 78: struct ipq *prev; ! 79: struct device *dev; /* Device - for icmp replies */ ! 80: }; ! 81: ! 82: /* ! 83: * Functions provided by ip.c ! 84: */ ! 85: ! 86: extern void ip_print(const struct iphdr *ip); ! 87: extern int ip_ioctl(struct sock *sk, int cmd, unsigned long arg); ! 88: extern void ip_route_check(__u32 daddr); ! 89: extern int ip_send(struct rtable *rt, struct sk_buff *skb, __u32 daddr, int len, struct device *dev, __u32 saddr); ! 90: extern int ip_build_header(struct sk_buff *skb, ! 91: __u32 saddr, ! 92: __u32 daddr, ! 93: struct device **dev, int type, ! 94: struct options *opt, int len, ! 95: int tos,int ttl,struct rtable **rp); ! 96: extern int ip_rcv(struct sk_buff *skb, struct device *dev, ! 97: struct packet_type *pt); ! 98: extern int ip_options_echo(struct options * dopt, struct options * sopt, ! 99: __u32 daddr, __u32 saddr, ! 100: struct sk_buff * skb); ! 101: extern int ip_options_compile(struct options * opt, struct sk_buff * skb); ! 102: extern void ip_send_check(struct iphdr *ip); ! 103: extern int ip_id_count; ! 104: extern void ip_queue_xmit(struct sock *sk, ! 105: struct device *dev, struct sk_buff *skb, ! 106: int free); ! 107: extern void ip_init(void); ! 108: extern int ip_build_xmit(struct sock *sk, ! 109: void getfrag (const void *, ! 110: __u32, ! 111: char *, ! 112: unsigned int, ! 113: unsigned int), ! 114: const void *frag, ! 115: unsigned short int length, ! 116: __u32 daddr, ! 117: __u32 saddr, ! 118: struct options * opt, ! 119: int flags, ! 120: int type, ! 121: int noblock); ! 122: ! 123: extern struct ip_mib ip_statistics; ! 124: ! 125: extern int sysctl_ip_dynaddr; ! 126: int ip_rewrite_addrs(struct sock *sk, struct sk_buff *skb, struct device *dev); ! 127: ! 128: /* ! 129: * Functions provided by ip_fragment.o ! 130: */ ! 131: ! 132: struct sk_buff *ip_defrag(struct iphdr *iph, struct sk_buff *skb, struct device *dev); ! 133: void ip_fragment(struct sock *sk, struct sk_buff *skb, struct device *dev, int is_frag); ! 134: ! 135: /* ! 136: * Functions provided by ip_forward.c ! 137: */ ! 138: ! 139: extern int ip_forward(struct sk_buff *skb, struct device *dev, int is_frag, __u32 target_addr); ! 140: extern int sysctl_ip_forward; ! 141: ! 142: ! 143: /* ! 144: * Functions provided by ip_options.c ! 145: */ ! 146: ! 147: extern void ip_options_build(struct sk_buff *skb, struct options *opt, __u32 daddr, __u32 saddr, int is_frag); ! 148: extern int ip_options_echo(struct options *dopt, struct options *sopt, __u32 daddr, __u32 saddr, struct sk_buff *skb); ! 149: extern void ip_options_fragment(struct sk_buff *skb); ! 150: extern int ip_options_compile(struct options *opt, struct sk_buff *skb); ! 151: ! 152: /* ! 153: * Functions provided by ip_sockglue.c ! 154: */ ! 155: ! 156: extern int ip_setsockopt(struct sock *sk, int level, int optname, char *optval, int optlen); ! 157: extern int ip_getsockopt(struct sock *sk, int level, int optname, char *optval, int *optlen); ! 158: ! 159: #endif /* _IP_H */
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