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YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +09001#ifndef __LINUX_MROUTE6_H
2#define __LINUX_MROUTE6_H
3
4#include <linux/types.h>
5#include <linux/sockios.h>
6
7/*
8 * Based on the MROUTING 3.5 defines primarily to keep
9 * source compatibility with BSD.
10 *
11 * See the pim6sd 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 MRT6_BASE 200
19#define MRT6_INIT (MRT6_BASE) /* Activate the kernel mroute code */
20#define MRT6_DONE (MRT6_BASE+1) /* Shutdown the kernel mroute */
21#define MRT6_ADD_MIF (MRT6_BASE+2) /* Add a virtual interface */
22#define MRT6_DEL_MIF (MRT6_BASE+3) /* Delete a virtual interface */
23#define MRT6_ADD_MFC (MRT6_BASE+4) /* Add a multicast forwarding entry */
24#define MRT6_DEL_MFC (MRT6_BASE+5) /* Delete a multicast forwarding entry */
25#define MRT6_VERSION (MRT6_BASE+6) /* Get the kernel multicast version */
YOSHIFUJI Hideaki14fb64e2008-04-03 09:22:54 +090026#define MRT6_ASSERT (MRT6_BASE+7) /* Activate PIM assert mode */
27#define MRT6_PIM (MRT6_BASE+8) /* enable PIM code */
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +090028
29#define SIOCGETMIFCNT_IN6 SIOCPROTOPRIVATE /* IP protocol privates */
30#define SIOCGETSGCNT_IN6 (SIOCPROTOPRIVATE+1)
31#define SIOCGETRPF (SIOCPROTOPRIVATE+2)
32
33#define MAXMIFS 32
34typedef unsigned long mifbitmap_t; /* User mode code depends on this lot */
35typedef unsigned short mifi_t;
36#define ALL_MIFS ((mifi_t)(-1))
37
38#ifndef IF_SETSIZE
39#define IF_SETSIZE 256
40#endif
41
42typedef __u32 if_mask;
43#define NIFBITS (sizeof(if_mask) * 8) /* bits per mask */
44
45#if !defined(__KERNEL__) && !defined(DIV_ROUND_UP)
46#define DIV_ROUND_UP(x,y) (((x) + ((y) - 1)) / (y))
47#endif
48
49typedef struct if_set {
50 if_mask ifs_bits[DIV_ROUND_UP(IF_SETSIZE, NIFBITS)];
51} if_set;
52
53#define IF_SET(n, p) ((p)->ifs_bits[(n)/NIFBITS] |= (1 << ((n) % NIFBITS)))
54#define IF_CLR(n, p) ((p)->ifs_bits[(n)/NIFBITS] &= ~(1 << ((n) % NIFBITS)))
55#define IF_ISSET(n, p) ((p)->ifs_bits[(n)/NIFBITS] & (1 << ((n) % NIFBITS)))
56#define IF_COPY(f, t) bcopy(f, t, sizeof(*(f)))
57#define IF_ZERO(p) bzero(p, sizeof(*(p)))
58
59/*
60 * Passed by mrouted for an MRT_ADD_MIF - again we use the
61 * mrouted 3.6 structures for compatibility
62 */
63
64struct mif6ctl {
65 mifi_t mif6c_mifi; /* Index of MIF */
66 unsigned char mif6c_flags; /* MIFF_ flags */
67 unsigned char vifc_threshold; /* ttl limit */
68 u_short mif6c_pifi; /* the index of the physical IF */
69 unsigned int vifc_rate_limit; /* Rate limiter values (NI) */
70};
71
72#define MIFF_REGISTER 0x1 /* register vif */
73
74/*
75 * Cache manipulation structures for mrouted and PIMd
76 */
77
78struct mf6cctl
79{
80 struct sockaddr_in6 mf6cc_origin; /* Origin of mcast */
81 struct sockaddr_in6 mf6cc_mcastgrp; /* Group in question */
82 mifi_t mf6cc_parent; /* Where it arrived */
83 struct if_set mf6cc_ifset; /* Where it is going */
84};
85
86/*
87 * Group count retrieval for pim6sd
88 */
89
90struct sioc_sg_req6
91{
92 struct sockaddr_in6 src;
93 struct sockaddr_in6 grp;
94 unsigned long pktcnt;
95 unsigned long bytecnt;
96 unsigned long wrong_if;
97};
98
99/*
100 * To get vif packet counts
101 */
102
103struct sioc_mif_req6
104{
105 mifi_t mifi; /* Which iface */
106 unsigned long icount; /* In packets */
107 unsigned long ocount; /* Out packets */
108 unsigned long ibytes; /* In bytes */
109 unsigned long obytes; /* Out bytes */
110};
111
112/*
113 * That's all usermode folks
114 */
115
116#ifdef __KERNEL__
117
118#include <linux/skbuff.h> /* for struct sk_buff_head */
119
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900120#ifdef CONFIG_IPV6_MROUTE
121static inline int ip6_mroute_opt(int opt)
122{
123 return (opt >= MRT6_BASE) && (opt <= MRT6_BASE + 10);
124}
125#else
126static inline int ip6_mroute_opt(int opt)
127{
128 return 0;
129}
130#endif
131
132struct sock;
133
YOSHIFUJI Hideakie0835f82008-07-03 16:51:22 +0900134#ifdef CONFIG_IPV6_MROUTE
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900135extern int ip6_mroute_setsockopt(struct sock *, int, char __user *, int);
136extern int ip6_mroute_getsockopt(struct sock *, int, char __user *, int __user *);
137extern int ip6_mr_input(struct sk_buff *skb);
138extern int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg);
Wang Chen623d1a12008-07-03 12:13:30 +0800139extern int ip6_mr_init(void);
140extern void ip6_mr_cleanup(void);
YOSHIFUJI Hideakie0835f82008-07-03 16:51:22 +0900141#else
142static inline
143int ip6_mroute_setsockopt(struct sock *sock,
144 int optname, char __user *optval, int optlen)
145{
146 return -ENOPROTOOPT;
147}
148
149static inline
150int ip6_mroute_getsockopt(struct sock *sock,
151 int optname, char __user *optval, int __user *optlen)
152{
153 return -ENOPROTOOPT;
154}
155
156static inline
157int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg)
158{
159 return -ENOIOCTLCMD;
160}
161
162static inline int ip6_mr_init(void)
163{
164 return 0;
165}
166
167static inline void ip6_mr_cleanup(void)
168{
169 return;
170}
171#endif
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900172
173struct mif_device
174{
175 struct net_device *dev; /* Device we are using */
176 unsigned long bytes_in,bytes_out;
177 unsigned long pkt_in,pkt_out; /* Statistics */
178 unsigned long rate_limit; /* Traffic shaping (NI) */
179 unsigned char threshold; /* TTL threshold */
180 unsigned short flags; /* Control flags */
181 int link; /* Physical interface index */
182};
183
184#define VIFF_STATIC 0x8000
185
186struct mfc6_cache
187{
188 struct mfc6_cache *next; /* Next entry on cache line */
189 struct in6_addr mf6c_mcastgrp; /* Group the entry belongs to */
190 struct in6_addr mf6c_origin; /* Source of packet */
191 mifi_t mf6c_parent; /* Source interface */
192 int mfc_flags; /* Flags on line */
193
194 union {
195 struct {
196 unsigned long expires;
197 struct sk_buff_head unresolved; /* Unresolved buffers */
198 } unres;
199 struct {
200 unsigned long last_assert;
201 int minvif;
202 int maxvif;
203 unsigned long bytes;
204 unsigned long pkt;
205 unsigned long wrong_if;
206 unsigned char ttls[MAXMIFS]; /* TTL thresholds */
207 } res;
208 } mfc_un;
209};
210
211#define MFC_STATIC 1
212#define MFC_NOTIFY 2
213
214#define MFC6_LINES 64
215
216#define MFC6_HASH(a, g) (((__force u32)(a)->s6_addr32[0] ^ \
217 (__force u32)(a)->s6_addr32[1] ^ \
218 (__force u32)(a)->s6_addr32[2] ^ \
219 (__force u32)(a)->s6_addr32[3] ^ \
220 (__force u32)(g)->s6_addr32[0] ^ \
221 (__force u32)(g)->s6_addr32[1] ^ \
222 (__force u32)(g)->s6_addr32[2] ^ \
223 (__force u32)(g)->s6_addr32[3]) % MFC6_LINES)
224
225#define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */
226
227#endif
228
229#ifdef __KERNEL__
230struct rtmsg;
231extern int ip6mr_get_route(struct sk_buff *skb, struct rtmsg *rtm, int nowait);
232
233#ifdef CONFIG_IPV6_MROUTE
234extern struct sock *mroute6_socket;
235extern int ip6mr_sk_done(struct sock *sk);
236#else
237#define mroute6_socket NULL
238static inline int ip6mr_sk_done(struct sock *sk) { return 0; }
239#endif
240#endif
241
242/*
243 * Structure used to communicate from kernel to multicast router.
244 * We'll overlay the structure onto an MLD header (not an IPv6 heder like igmpmsg{}
245 * used for IPv4 implementation). This is because this structure will be passed via an
246 * IPv6 raw socket, on wich an application will only receiver the payload i.e the data after
247 * the IPv6 header and all the extension headers. (See section 3 of RFC 3542)
248 */
249
250struct mrt6msg {
251#define MRT6MSG_NOCACHE 1
YOSHIFUJI Hideaki14fb64e2008-04-03 09:22:54 +0900252#define MRT6MSG_WRONGMIF 2
253#define MRT6MSG_WHOLEPKT 3 /* used for use level encap */
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900254 __u8 im6_mbz; /* must be zero */
255 __u8 im6_msgtype; /* what type of message */
256 __u16 im6_mif; /* mif rec'd on */
257 __u32 im6_pad; /* padding for 64 bit arch */
258 struct in6_addr im6_src, im6_dst;
259};
260
261#endif