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-rw-r--r--include/linux/mroute.h226
1 files changed, 226 insertions, 0 deletions
diff --git a/include/linux/mroute.h b/include/linux/mroute.h
new file mode 100644
index 000000000000..e05d54a90743
--- /dev/null
+++ b/include/linux/mroute.h
@@ -0,0 +1,226 @@
1#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
131extern int ip_mroute_setsockopt(struct sock *, int, char __user *, int);
132extern int ip_mroute_getsockopt(struct sock *, int, char __user *, int __user *);
133extern int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg);
134extern void ip_mr_init(void);
135
136
137struct vif_device
138{
139 struct net_device *dev; /* Device we are using */
140 unsigned long bytes_in,bytes_out;
141 unsigned long pkt_in,pkt_out; /* Statistics */
142 unsigned long rate_limit; /* Traffic shaping (NI) */
143 unsigned char threshold; /* TTL threshold */
144 unsigned short flags; /* Control flags */
145 __u32 local,remote; /* Addresses(remote for tunnels)*/
146 int link; /* Physical interface index */
147};
148
149#define VIFF_STATIC 0x8000
150
151struct mfc_cache
152{
153 struct mfc_cache *next; /* Next entry on cache line */
154 __u32 mfc_mcastgrp; /* Group the entry belongs to */
155 __u32 mfc_origin; /* Source of packet */
156 vifi_t mfc_parent; /* Source interface */
157 int mfc_flags; /* Flags on line */
158
159 union {
160 struct {
161 unsigned long expires;
162 struct sk_buff_head unresolved; /* Unresolved buffers */
163 } unres;
164 struct {
165 unsigned long last_assert;
166 int minvif;
167 int maxvif;
168 unsigned long bytes;
169 unsigned long pkt;
170 unsigned long wrong_if;
171 unsigned char ttls[MAXVIFS]; /* TTL thresholds */
172 } res;
173 } mfc_un;
174};
175
176#define MFC_STATIC 1
177#define MFC_NOTIFY 2
178
179#define MFC_LINES 64
180
181#ifdef __BIG_ENDIAN
182#define MFC_HASH(a,b) ((((a)>>24)^((b)>>26))&(MFC_LINES-1))
183#else
184#define MFC_HASH(a,b) (((a)^((b)>>2))&(MFC_LINES-1))
185#endif
186
187#endif
188
189
190#define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */
191
192/*
193 * Pseudo messages used by mrouted
194 */
195
196#define IGMPMSG_NOCACHE 1 /* Kern cache fill request to mrouted */
197#define IGMPMSG_WRONGVIF 2 /* For PIM assert processing (unused) */
198#define IGMPMSG_WHOLEPKT 3 /* For PIM Register processing */
199
200#ifdef __KERNEL__
201
202#define PIM_V1_VERSION __constant_htonl(0x10000000)
203#define PIM_V1_REGISTER 1
204
205#define PIM_VERSION 2
206#define PIM_REGISTER 1
207
208#define PIM_NULL_REGISTER __constant_htonl(0x40000000)
209
210/* PIMv2 register message header layout (ietf-draft-idmr-pimvsm-v2-00.ps */
211
212struct pimreghdr
213{
214 __u8 type;
215 __u8 reserved;
216 __u16 csum;
217 __u32 flags;
218};
219
220extern int pim_rcv_v1(struct sk_buff *);
221
222struct rtmsg;
223extern int ipmr_get_route(struct sk_buff *skb, struct rtmsg *rtm, int nowait);
224#endif
225
226#endif
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