/* Copyright (C) Uppsala University * * This file is distributed under the terms of the GNU general Public * License (GPL), see the file LICENSE * * Author: Erik Nordstr?m, <erikn@it.uu.se> */#ifndef _DSR_SRT_H#define _DSR_SRT_H#include "dsr.h"#include "debug.h"#ifdef NS2#include "endian.h"#endif#ifndef NO_GLOBALS/* Source route options header *//* TODO: This header is not byte order correct... is there a simple way to fix * it? */struct dsr_srt_opt {	u_int8_t type;	u_int8_t length;#if defined(__LITTLE_ENDIAN_BITFIELD)	/* TODO: Fix bit/byte order */	u_int16_t f:1;	u_int16_t l:1;	u_int16_t res:4;	u_int16_t salv:4;	u_int16_t sleft:6;#elif defined (__BIG_ENDIAN_BITFIELD)	u_int16_t f:1;	u_int16_t l:1;	u_int16_t res:4;	u_int16_t salv:4;	u_int16_t sleft:6;#else#error  "Please fix <asm/byteorder.h>"#endif	u_int32_t addrs[0];};/* Flags: */#define SRT_FIRST_HOP_EXT 0x1#define SRT_LAST_HOP_EXT  0x2#define DSR_SRT_HDR_LEN sizeof(struct dsr_srt_opt)#define DSR_SRT_OPT_LEN(srt) (DSR_SRT_HDR_LEN + srt->laddrs)/* Flags */#define SRT_BIDIR 0x1/* Internal representation of a source route */struct dsr_srt {	struct in_addr src;	struct in_addr dst;	unsigned short flags;	unsigned short index;	unsigned int laddrs;	/* length in bytes if addrs */	struct in_addr addrs[0];	/* Intermediate nodes */};static inline char *print_srt(struct dsr_srt *srt){#define BUFLEN 256	static char buf[BUFLEN];	unsigned int i, len;	if (!srt)		return NULL;	len = sprintf(buf, "%s<->", print_ip(srt->src));	for (i = 0; i < (srt->laddrs / sizeof(u_int32_t)) &&	     (len + 16) < BUFLEN; i++)		len += sprintf(buf + len, "%s<->", print_ip(srt->addrs[i]));	if ((len + 16) < BUFLEN)		len = sprintf(buf + len, "%s", print_ip(srt->dst));	return buf;}struct in_addr dsr_srt_next_hop(struct dsr_srt *srt, int sleft);struct in_addr dsr_srt_prev_hop(struct dsr_srt *srt, int sleft);struct dsr_srt_opt *dsr_srt_opt_add(char *buf, int len, int flags, int salvage, struct dsr_srt *srt);struct dsr_srt *dsr_srt_new(struct in_addr src, struct in_addr dst,			    unsigned int length, char *addrs);struct dsr_srt *dsr_srt_new_rev(struct dsr_srt *srt);void dsr_srt_del(struct dsr_srt *srt);struct dsr_srt *dsr_srt_concatenate(struct dsr_srt *srt1, struct dsr_srt *srt2);int dsr_srt_check_duplicate(struct dsr_srt *srt);struct dsr_srt *dsr_srt_new_split(struct dsr_srt *srt, struct in_addr addr);#endif				/* NO_GLOBALS */#ifndef NO_DECLSint dsr_srt_add(struct dsr_pkt *dp);int dsr_srt_opt_recv(struct dsr_pkt *dp, struct dsr_srt_opt *srt_opt);#endif				/* NO_DECLS */#endif				/* _DSR_SRT_H */