This file is indexed.

/usr/include/linux/mroute6.h is in linux-libc-dev 3.2.0-23.36.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
#ifndef __LINUX_MROUTE6_H
#define __LINUX_MROUTE6_H

#include <linux/types.h>
#include <linux/sockios.h>

/*
 *	Based on the MROUTING 3.5 defines primarily to keep
 *	source compatibility with BSD.
 *
 *	See the pim6sd code for the original history.
 *
 *      Protocol Independent Multicast (PIM) data structures included
 *      Carlos Picoto (cap@di.fc.ul.pt)
 *
 */

#define MRT6_BASE	200
#define MRT6_INIT	(MRT6_BASE)	/* Activate the kernel mroute code 	*/
#define MRT6_DONE	(MRT6_BASE+1)	/* Shutdown the kernel mroute		*/
#define MRT6_ADD_MIF	(MRT6_BASE+2)	/* Add a virtual interface		*/
#define MRT6_DEL_MIF	(MRT6_BASE+3)	/* Delete a virtual interface		*/
#define MRT6_ADD_MFC	(MRT6_BASE+4)	/* Add a multicast forwarding entry	*/
#define MRT6_DEL_MFC	(MRT6_BASE+5)	/* Delete a multicast forwarding entry	*/
#define MRT6_VERSION	(MRT6_BASE+6)	/* Get the kernel multicast version	*/
#define MRT6_ASSERT	(MRT6_BASE+7)	/* Activate PIM assert mode		*/
#define MRT6_PIM	(MRT6_BASE+8)	/* enable PIM code			*/
#define MRT6_TABLE	(MRT6_BASE+9)	/* Specify mroute table ID		*/

#define SIOCGETMIFCNT_IN6	SIOCPROTOPRIVATE	/* IP protocol privates */
#define SIOCGETSGCNT_IN6	(SIOCPROTOPRIVATE+1)
#define SIOCGETRPF	(SIOCPROTOPRIVATE+2)

#define MAXMIFS		32
typedef unsigned long mifbitmap_t;	/* User mode code depends on this lot */
typedef unsigned short mifi_t;
#define ALL_MIFS	((mifi_t)(-1))

#ifndef IF_SETSIZE
#define IF_SETSIZE	256
#endif

typedef	__u32		if_mask;
#define NIFBITS (sizeof(if_mask) * 8)        /* bits per mask */

#if !defined(__KERNEL__) && !defined(DIV_ROUND_UP)
#define	DIV_ROUND_UP(x,y)	(((x) + ((y) - 1)) / (y))
#endif

typedef struct if_set {
	if_mask ifs_bits[DIV_ROUND_UP(IF_SETSIZE, NIFBITS)];
} if_set;

#define IF_SET(n, p)    ((p)->ifs_bits[(n)/NIFBITS] |= (1 << ((n) % NIFBITS)))
#define IF_CLR(n, p)    ((p)->ifs_bits[(n)/NIFBITS] &= ~(1 << ((n) % NIFBITS)))
#define IF_ISSET(n, p)  ((p)->ifs_bits[(n)/NIFBITS] & (1 << ((n) % NIFBITS)))
#define IF_COPY(f, t)   bcopy(f, t, sizeof(*(f)))
#define IF_ZERO(p)      bzero(p, sizeof(*(p)))

/*
 *	Passed by mrouted for an MRT_ADD_MIF - again we use the
 *	mrouted 3.6 structures for compatibility
 */

struct mif6ctl {
	mifi_t	mif6c_mifi;		/* Index of MIF */
	unsigned char mif6c_flags;	/* MIFF_ flags */
	unsigned char vifc_threshold;	/* ttl limit */
	__u16	 mif6c_pifi;		/* the index of the physical IF */
	unsigned int vifc_rate_limit;	/* Rate limiter values (NI) */
};

#define MIFF_REGISTER	0x1	/* register vif	*/

/*
 *	Cache manipulation structures for mrouted and PIMd
 */

struct mf6cctl {
	struct sockaddr_in6 mf6cc_origin;		/* Origin of mcast	*/
	struct sockaddr_in6 mf6cc_mcastgrp;		/* Group in question	*/
	mifi_t	mf6cc_parent;			/* Where it arrived	*/
	struct if_set mf6cc_ifset;		/* Where it is going */
};

/*
 *	Group count retrieval for pim6sd
 */

struct sioc_sg_req6 {
	struct sockaddr_in6 src;
	struct sockaddr_in6 grp;
	unsigned long pktcnt;
	unsigned long bytecnt;
	unsigned long wrong_if;
};

/*
 *	To get vif packet counts
 */

struct sioc_mif_req6 {
	mifi_t	mifi;		/* Which iface */
	unsigned long icount;	/* In packets */
	unsigned long ocount;	/* Out packets */
	unsigned long ibytes;	/* In bytes */
	unsigned long obytes;	/* Out bytes */
};

/*
 *	That's all usermode folks
 */



/*
 * Structure used to communicate from kernel to multicast router.
 * We'll overlay the structure onto an MLD header (not an IPv6 heder like igmpmsg{}
 * used for IPv4 implementation). This is because this structure will be passed via an
 * IPv6 raw socket, on which an application will only receiver the payload i.e the data after
 * the IPv6 header and all the extension headers. (See section 3 of RFC 3542)
 */

struct mrt6msg {
#define MRT6MSG_NOCACHE		1
#define MRT6MSG_WRONGMIF	2
#define MRT6MSG_WHOLEPKT	3		/* used for use level encap */
	__u8		im6_mbz;		/* must be zero		   */
	__u8		im6_msgtype;		/* what type of message    */
	__u16		im6_mif;		/* mif rec'd on		   */
	__u32		im6_pad;		/* padding for 64 bit arch */
	struct in6_addr	im6_src, im6_dst;
};

#endif