1#ifndef __LINUX_MROUTE_H
2#define __LINUX_MROUTE_H
3
4#include <linux/sockios.h>
5#include <linux/types.h>
6#include <linux/in.h> /* For struct in_addr. */
7
8/* Based on the MROUTING 3.5 defines primarily to keep
9 * source compatibility with BSD.
10 *
11 * See the mrouted code for the original history.
12 *
13 * Protocol Independent Multicast (PIM) data structures included
14 * Carlos Picoto (cap@di.fc.ul.pt)
15 */
16
17#define MRT_BASE 200
18#define MRT_INIT (MRT_BASE) /* Activate the kernel mroute code */
19#define MRT_DONE (MRT_BASE+1) /* Shutdown the kernel mroute */
20#define MRT_ADD_VIF (MRT_BASE+2) /* Add a virtual interface */
21#define MRT_DEL_VIF (MRT_BASE+3) /* Delete a virtual interface */
22#define MRT_ADD_MFC (MRT_BASE+4) /* Add a multicast forwarding entry */
23#define MRT_DEL_MFC (MRT_BASE+5) /* Delete a multicast forwarding entry */
24#define MRT_VERSION (MRT_BASE+6) /* Get the kernel multicast version */
25#define MRT_ASSERT (MRT_BASE+7) /* Activate PIM assert mode */
26#define MRT_PIM (MRT_BASE+8) /* enable PIM code */
27#define MRT_TABLE (MRT_BASE+9) /* Specify mroute table ID */
28#define MRT_ADD_MFC_PROXY (MRT_BASE+10) /* Add a (*,*|G) mfc entry */
29#define MRT_DEL_MFC_PROXY (MRT_BASE+11) /* Del a (*,*|G) mfc entry */
30#define MRT_MAX (MRT_BASE+11)
31
32#define SIOCGETVIFCNT SIOCPROTOPRIVATE /* IP protocol privates */
33#define SIOCGETSGCNT (SIOCPROTOPRIVATE+1)
34#define SIOCGETRPF (SIOCPROTOPRIVATE+2)
35
36#define MAXVIFS 32
37typedef unsigned long vifbitmap_t; /* User mode code depends on this lot */
38typedef unsigned short vifi_t;
39#define ALL_VIFS ((vifi_t)(-1))
40
41/* Same idea as select */
42
43#define VIFM_SET(n,m) ((m)|=(1<<(n)))
44#define VIFM_CLR(n,m) ((m)&=~(1<<(n)))
45#define VIFM_ISSET(n,m) ((m)&(1<<(n)))
46#define VIFM_CLRALL(m) ((m)=0)
47#define VIFM_COPY(mfrom,mto) ((mto)=(mfrom))
48#define VIFM_SAME(m1,m2) ((m1)==(m2))
49
50/* Passed by mrouted for an MRT_ADD_VIF - again we use the
51 * mrouted 3.6 structures for compatibility
52 */
53struct vifctl {
54 vifi_t vifc_vifi; /* Index of VIF */
55 unsigned char vifc_flags; /* VIFF_ flags */
56 unsigned char vifc_threshold; /* ttl limit */
57 unsigned int vifc_rate_limit; /* Rate limiter values (NI) */
58 union {
59 struct in_addr vifc_lcl_addr; /* Local interface address */
60 int vifc_lcl_ifindex; /* Local interface index */
61 };
62 struct in_addr vifc_rmt_addr; /* IPIP tunnel addr */
63};
64
65#define VIFF_TUNNEL 0x1 /* IPIP tunnel */
66#define VIFF_SRCRT 0x2 /* NI */
67#define VIFF_REGISTER 0x4 /* register vif */
68#define VIFF_USE_IFINDEX 0x8 /* use vifc_lcl_ifindex instead of
69 vifc_lcl_addr to find an interface */
70
71/* Cache manipulation structures for mrouted and PIMd */
72struct mfcctl {
73 struct in_addr mfcc_origin; /* Origin of mcast */
74 struct in_addr mfcc_mcastgrp; /* Group in question */
75 vifi_t mfcc_parent; /* Where it arrived */
76 unsigned char mfcc_ttls[MAXVIFS]; /* Where it is going */
77 unsigned int mfcc_pkt_cnt; /* pkt count for src-grp */
78 unsigned int mfcc_byte_cnt;
79 unsigned int mfcc_wrong_if;
80 int mfcc_expire;
81};
82
83/* Group count retrieval for mrouted */
84struct sioc_sg_req {
85 struct in_addr src;
86 struct in_addr grp;
87 unsigned long pktcnt;
88 unsigned long bytecnt;
89 unsigned long wrong_if;
90};
91
92/* To get vif packet counts */
93struct sioc_vif_req {
94 vifi_t vifi; /* Which iface */
95 unsigned long icount; /* In packets */
96 unsigned long ocount; /* Out packets */
97 unsigned long ibytes; /* In bytes */
98 unsigned long obytes; /* Out bytes */
99};
100
101/* This is the format the mroute daemon expects to see IGMP control
102 * data. Magically happens to be like an IP packet as per the original
103 */
104struct igmpmsg {
105 __u32 unused1,unused2;
106 unsigned char im_msgtype; /* What is this */
107 unsigned char im_mbz; /* Must be zero */
108 unsigned char im_vif; /* Interface (this ought to be a vifi_t!) */
109 unsigned char unused3;
110 struct in_addr im_src,im_dst;
111};
112
113/* That's all usermode folks */
114
115#define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */
116
117/* Pseudo messages used by mrouted */
118#define IGMPMSG_NOCACHE 1 /* Kern cache fill request to mrouted */
119#define IGMPMSG_WRONGVIF 2 /* For PIM assert processing (unused) */
120#define IGMPMSG_WHOLEPKT 3 /* For PIM Register processing */
121
122#endif /* __LINUX_MROUTE_H */
123