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1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2#ifndef __LINUX_MROUTE6_H
3#define __LINUX_MROUTE6_H
4
5#include <linux/const.h>
6#include <linux/types.h>
7#include <linux/sockios.h>
8#include <linux/in6.h> /* For struct sockaddr_in6. */
9
10/*
11 * Based on the MROUTING 3.5 defines primarily to keep
12 * source compatibility with BSD.
13 *
14 * See the pim6sd code for the original history.
15 *
16 * Protocol Independent Multicast (PIM) data structures included
17 * Carlos Picoto (cap@di.fc.ul.pt)
18 *
19 */
20
21#define MRT6_BASE 200
22#define MRT6_INIT (MRT6_BASE) /* Activate the kernel mroute code */
23#define MRT6_DONE (MRT6_BASE+1) /* Shutdown the kernel mroute */
24#define MRT6_ADD_MIF (MRT6_BASE+2) /* Add a virtual interface */
25#define MRT6_DEL_MIF (MRT6_BASE+3) /* Delete a virtual interface */
26#define MRT6_ADD_MFC (MRT6_BASE+4) /* Add a multicast forwarding entry */
27#define MRT6_DEL_MFC (MRT6_BASE+5) /* Delete a multicast forwarding entry */
28#define MRT6_VERSION (MRT6_BASE+6) /* Get the kernel multicast version */
29#define MRT6_ASSERT (MRT6_BASE+7) /* Activate PIM assert mode */
30#define MRT6_PIM (MRT6_BASE+8) /* enable PIM code */
31#define MRT6_TABLE (MRT6_BASE+9) /* Specify mroute table ID */
32#define MRT6_ADD_MFC_PROXY (MRT6_BASE+10) /* Add a (*,*|G) mfc entry */
33#define MRT6_DEL_MFC_PROXY (MRT6_BASE+11) /* Del a (*,*|G) mfc entry */
34#define MRT6_FLUSH (MRT6_BASE+12) /* Flush all mfc entries and/or vifs */
35#define MRT6_MAX (MRT6_BASE+12)
36
37#define SIOCGETMIFCNT_IN6 SIOCPROTOPRIVATE /* IP protocol privates */
38#define SIOCGETSGCNT_IN6 (SIOCPROTOPRIVATE+1)
39#define SIOCGETRPF (SIOCPROTOPRIVATE+2)
40
41/* MRT6_FLUSH optional flags */
42#define MRT6_FLUSH_MFC 1 /* Flush multicast entries */
43#define MRT6_FLUSH_MFC_STATIC 2 /* Flush static multicast entries */
44#define MRT6_FLUSH_MIFS 4 /* Flushing multicast vifs */
45#define MRT6_FLUSH_MIFS_STATIC 8 /* Flush static multicast vifs */
46
47#define MAXMIFS 32
48typedef unsigned long mifbitmap_t; /* User mode code depends on this lot */
49typedef unsigned short mifi_t;
50#define ALL_MIFS ((mifi_t)(-1))
51
52#ifndef IF_SETSIZE
53#define IF_SETSIZE 256
54#endif
55
56typedef __u32 if_mask;
57#define NIFBITS (sizeof(if_mask) * 8) /* bits per mask */
58
59typedef struct if_set {
60 if_mask ifs_bits[__KERNEL_DIV_ROUND_UP(IF_SETSIZE, NIFBITS)];
61} if_set;
62
63#define IF_SET(n, p) ((p)->ifs_bits[(n)/NIFBITS] |= (1 << ((n) % NIFBITS)))
64#define IF_CLR(n, p) ((p)->ifs_bits[(n)/NIFBITS] &= ~(1 << ((n) % NIFBITS)))
65#define IF_ISSET(n, p) ((p)->ifs_bits[(n)/NIFBITS] & (1 << ((n) % NIFBITS)))
66#define IF_COPY(f, t) bcopy(f, t, sizeof(*(f)))
67#define IF_ZERO(p) bzero(p, sizeof(*(p)))
68
69/*
70 * Passed by mrouted for an MRT_ADD_MIF - again we use the
71 * mrouted 3.6 structures for compatibility
72 */
73
74struct mif6ctl {
75 mifi_t mif6c_mifi; /* Index of MIF */
76 unsigned char mif6c_flags; /* MIFF_ flags */
77 unsigned char vifc_threshold; /* ttl limit */
78 __u16 mif6c_pifi; /* the index of the physical IF */
79 unsigned int vifc_rate_limit; /* Rate limiter values (NI) */
80};
81
82#define MIFF_REGISTER 0x1 /* register vif */
83
84/*
85 * Cache manipulation structures for mrouted and PIMd
86 */
87
88struct mf6cctl {
89 struct sockaddr_in6 mf6cc_origin; /* Origin of mcast */
90 struct sockaddr_in6 mf6cc_mcastgrp; /* Group in question */
91 mifi_t mf6cc_parent; /* Where it arrived */
92 struct if_set mf6cc_ifset; /* Where it is going */
93};
94
95/*
96 * Group count retrieval for pim6sd
97 */
98
99struct sioc_sg_req6 {
100 struct sockaddr_in6 src;
101 struct sockaddr_in6 grp;
102 unsigned long pktcnt;
103 unsigned long bytecnt;
104 unsigned long wrong_if;
105};
106
107/*
108 * To get vif packet counts
109 */
110
111struct sioc_mif_req6 {
112 mifi_t mifi; /* Which iface */
113 unsigned long icount; /* In packets */
114 unsigned long ocount; /* Out packets */
115 unsigned long ibytes; /* In bytes */
116 unsigned long obytes; /* Out bytes */
117};
118
119/*
120 * That's all usermode folks
121 */
122
123
124
125/*
126 * Structure used to communicate from kernel to multicast router.
127 * We'll overlay the structure onto an MLD header (not an IPv6 heder like igmpmsg{}
128 * used for IPv4 implementation). This is because this structure will be passed via an
129 * IPv6 raw socket, on which an application will only receiver the payload i.e the data after
130 * the IPv6 header and all the extension headers. (See section 3 of RFC 3542)
131 */
132
133struct mrt6msg {
134#define MRT6MSG_NOCACHE 1
135#define MRT6MSG_WRONGMIF 2
136#define MRT6MSG_WHOLEPKT 3 /* used for use level encap */
137#define MRT6MSG_WRMIFWHOLE 4 /* For PIM Register and assert processing */
138 __u8 im6_mbz; /* must be zero */
139 __u8 im6_msgtype; /* what type of message */
140 __u16 im6_mif; /* mif rec'd on */
141 __u32 im6_pad; /* padding for 64 bit arch */
142 struct in6_addr im6_src, im6_dst;
143};
144
145/* ip6mr netlink cache report attributes */
146enum {
147 IP6MRA_CREPORT_UNSPEC,
148 IP6MRA_CREPORT_MSGTYPE,
149 IP6MRA_CREPORT_MIF_ID,
150 IP6MRA_CREPORT_SRC_ADDR,
151 IP6MRA_CREPORT_DST_ADDR,
152 IP6MRA_CREPORT_PKT,
153 __IP6MRA_CREPORT_MAX
154};
155#define IP6MRA_CREPORT_MAX (__IP6MRA_CREPORT_MAX - 1)
156
157#endif /* __LINUX_MROUTE6_H */