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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef __LINUX_MROUTE_H
2#define __LINUX_MROUTE_H
3
4#include <linux/sockios.h>
5#include <linux/in.h>
6
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
18#define MRT_BASE 200
19#define MRT_INIT (MRT_BASE) /* Activate the kernel mroute code */
20#define MRT_DONE (MRT_BASE+1) /* Shutdown the kernel mroute */
21#define MRT_ADD_VIF (MRT_BASE+2) /* Add a virtual interface */
22#define MRT_DEL_VIF (MRT_BASE+3) /* Delete a virtual interface */
23#define MRT_ADD_MFC (MRT_BASE+4) /* Add a multicast forwarding entry */
24#define MRT_DEL_MFC (MRT_BASE+5) /* Delete a multicast forwarding entry */
25#define MRT_VERSION (MRT_BASE+6) /* Get the kernel multicast version */
26#define MRT_ASSERT (MRT_BASE+7) /* Activate PIM assert mode */
27#define MRT_PIM (MRT_BASE+8) /* enable PIM code */
28
29#define SIOCGETVIFCNT SIOCPROTOPRIVATE /* IP protocol privates */
30#define SIOCGETSGCNT (SIOCPROTOPRIVATE+1)
31#define SIOCGETRPF (SIOCPROTOPRIVATE+2)
32
33#define MAXVIFS 32
34typedef unsigned long vifbitmap_t; /* User mode code depends on this lot */
35typedef unsigned short vifi_t;
36#define ALL_VIFS ((vifi_t)(-1))
37
38/*
39 * Same idea as select
40 */
41
42#define VIFM_SET(n,m) ((m)|=(1<<(n)))
43#define VIFM_CLR(n,m) ((m)&=~(1<<(n)))
44#define VIFM_ISSET(n,m) ((m)&(1<<(n)))
45#define VIFM_CLRALL(m) ((m)=0)
46#define VIFM_COPY(mfrom,mto) ((mto)=(mfrom))
47#define VIFM_SAME(m1,m2) ((m1)==(m2))
48
49/*
50 * Passed by mrouted for an MRT_ADD_VIF - again we use the
51 * mrouted 3.6 structures for compatibility
52 */
53
54struct vifctl {
55 vifi_t vifc_vifi; /* Index of VIF */
56 unsigned char vifc_flags; /* VIFF_ flags */
57 unsigned char vifc_threshold; /* ttl limit */
58 unsigned int vifc_rate_limit; /* Rate limiter values (NI) */
59 struct in_addr vifc_lcl_addr; /* Our address */
60 struct in_addr vifc_rmt_addr; /* IPIP tunnel addr */
61};
62
63#define VIFF_TUNNEL 0x1 /* IPIP tunnel */
64#define VIFF_SRCRT 0x2 /* NI */
65#define VIFF_REGISTER 0x4 /* register vif */
66
67/*
68 * Cache manipulation structures for mrouted and PIMd
69 */
70
71struct mfcctl
72{
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/*
84 * Group count retrieval for mrouted
85 */
86
87struct sioc_sg_req
88{
89 struct in_addr src;
90 struct in_addr grp;
91 unsigned long pktcnt;
92 unsigned long bytecnt;
93 unsigned long wrong_if;
94};
95
96/*
97 * To get vif packet counts
98 */
99
100struct sioc_vif_req
101{
102 vifi_t vifi; /* Which iface */
103 unsigned long icount; /* In packets */
104 unsigned long ocount; /* Out packets */
105 unsigned long ibytes; /* In bytes */
106 unsigned long obytes; /* Out bytes */
107};
108
109/*
110 * This is the format the mroute daemon expects to see IGMP control
111 * data. Magically happens to be like an IP packet as per the original
112 */
113
114struct igmpmsg
115{
116 __u32 unused1,unused2;
117 unsigned char im_msgtype; /* What is this */
118 unsigned char im_mbz; /* Must be zero */
119 unsigned char im_vif; /* Interface (this ought to be a vifi_t!) */
120 unsigned char unused3;
121 struct in_addr im_src,im_dst;
122};
123
124/*
125 * That's all usermode folks
126 */
127
128#ifdef __KERNEL__
129#include <net/sock.h>
130
Pavel Emelyanov6a9fb942007-11-05 21:32:31 -0800131#ifdef CONFIG_IP_MROUTE
132static inline int ip_mroute_opt(int opt)
133{
134 return (opt >= MRT_BASE) && (opt <= MRT_BASE + 10);
135}
136#else
137static inline int ip_mroute_opt(int opt)
138{
139 return 0;
140}
141#endif
142
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143extern int ip_mroute_setsockopt(struct sock *, int, char __user *, int);
144extern int ip_mroute_getsockopt(struct sock *, int, char __user *, int __user *);
145extern int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg);
146extern void ip_mr_init(void);
147
148
149struct vif_device
150{
151 struct net_device *dev; /* Device we are using */
152 unsigned long bytes_in,bytes_out;
153 unsigned long pkt_in,pkt_out; /* Statistics */
154 unsigned long rate_limit; /* Traffic shaping (NI) */
155 unsigned char threshold; /* TTL threshold */
156 unsigned short flags; /* Control flags */
Al Viro114c7842006-09-27 18:39:29 -0700157 __be32 local,remote; /* Addresses(remote for tunnels)*/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158 int link; /* Physical interface index */
159};
160
161#define VIFF_STATIC 0x8000
162
163struct mfc_cache
164{
165 struct mfc_cache *next; /* Next entry on cache line */
Al Viro114c7842006-09-27 18:39:29 -0700166 __be32 mfc_mcastgrp; /* Group the entry belongs to */
167 __be32 mfc_origin; /* Source of packet */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168 vifi_t mfc_parent; /* Source interface */
169 int mfc_flags; /* Flags on line */
170
171 union {
172 struct {
173 unsigned long expires;
174 struct sk_buff_head unresolved; /* Unresolved buffers */
175 } unres;
176 struct {
177 unsigned long last_assert;
178 int minvif;
179 int maxvif;
180 unsigned long bytes;
181 unsigned long pkt;
182 unsigned long wrong_if;
183 unsigned char ttls[MAXVIFS]; /* TTL thresholds */
184 } res;
185 } mfc_un;
186};
187
188#define MFC_STATIC 1
189#define MFC_NOTIFY 2
190
191#define MFC_LINES 64
192
193#ifdef __BIG_ENDIAN
Al Viro114c7842006-09-27 18:39:29 -0700194#define MFC_HASH(a,b) (((((__force u32)(__be32)a)>>24)^(((__force u32)(__be32)b)>>26))&(MFC_LINES-1))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195#else
Al Viro114c7842006-09-27 18:39:29 -0700196#define MFC_HASH(a,b) ((((__force u32)(__be32)a)^(((__force u32)(__be32)b)>>2))&(MFC_LINES-1))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197#endif
198
199#endif
200
201
202#define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */
203
204/*
205 * Pseudo messages used by mrouted
206 */
207
208#define IGMPMSG_NOCACHE 1 /* Kern cache fill request to mrouted */
209#define IGMPMSG_WRONGVIF 2 /* For PIM assert processing (unused) */
210#define IGMPMSG_WHOLEPKT 3 /* For PIM Register processing */
211
212#ifdef __KERNEL__
213
214#define PIM_V1_VERSION __constant_htonl(0x10000000)
215#define PIM_V1_REGISTER 1
216
217#define PIM_VERSION 2
218#define PIM_REGISTER 1
219
220#define PIM_NULL_REGISTER __constant_htonl(0x40000000)
221
222/* PIMv2 register message header layout (ietf-draft-idmr-pimvsm-v2-00.ps */
223
224struct pimreghdr
225{
226 __u8 type;
227 __u8 reserved;
Al Viro1b6201542006-09-27 18:39:09 -0700228 __be16 csum;
229 __be32 flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700230};
231
232extern int pim_rcv_v1(struct sk_buff *);
233
234struct rtmsg;
235extern int ipmr_get_route(struct sk_buff *skb, struct rtmsg *rtm, int nowait);
236#endif
237
238#endif