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- /*
- * 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>
- *
- * 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/ip.h>
-
-
- #include "sock.h" /* struct sock */
-
- /* 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 */
-
-
- /* Describe an IP fragment. */
- struct ipfrag {
- int offset; /* offset of fragment in IP datagram */
- int end; /* last byte of data in datagram */
- int len; /* length of this fragment */
- struct sk_buff *skb; /* complete received fragment */
- unsigned char *ptr; /* pointer into real fragment data */
- struct ipfrag *next; /* linked list pointers */
- struct ipfrag *prev;
- };
-
- /* Describe an entry in the "incomplete datagrams" queue. */
- struct ipq {
- unsigned char *mac; /* pointer to MAC header */
- struct iphdr *iph; /* pointer to IP header */
- int len; /* total length of original datagram */
- short ihlen; /* length of the IP header */
- short maclen; /* length of the MAC header */
- struct timer_list timer; /* when will this queue expire? */
- struct ipfrag *fragments; /* linked list of received fragments */
- struct ipq *next; /* linked list pointers */
- struct ipq *prev;
- struct device *dev; /* Device - for icmp replies */
- };
-
-
- extern int backoff(int n);
-
- extern void ip_print(struct iphdr *ip);
- extern int ip_ioctl(struct sock *sk, int cmd,
- unsigned long arg);
- extern void ip_route_check(unsigned long daddr);
- extern int ip_build_header(struct sk_buff *skb,
- unsigned long saddr,
- unsigned long daddr,
- struct device **dev, int type,
- struct options *opt, int len,
- int tos,int ttl);
- extern unsigned short ip_compute_csum(unsigned char * buff, int len);
- extern int ip_rcv(struct sk_buff *skb, struct device *dev,
- struct packet_type *pt);
- extern void ip_queue_xmit(struct sock *sk,
- struct device *dev, struct sk_buff *skb,
- int free);
- extern void ip_retransmit(struct sock *sk, int all);
- extern void ip_do_retransmit(struct sock *sk, int all);
- extern int ip_setsockopt(struct sock *sk, int level, int optname, char *optval, int optlen);
- extern int ip_getsockopt(struct sock *sk, int level, int optname, char *optval, int *optlen);
-
- #endif /* _IP_H */
-