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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
David S. Miller7c19a3d2008-08-29 14:37:23 -0700118#include <linux/pim.h>
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900119#include <linux/skbuff.h> /* for struct sk_buff_head */
Benjamin Therybd91b8b2008-12-10 16:07:08 -0800120#include <net/net_namespace.h>
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900121
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900122#ifdef CONFIG_IPV6_MROUTE
123static inline int ip6_mroute_opt(int opt)
124{
125 return (opt >= MRT6_BASE) && (opt <= MRT6_BASE + 10);
126}
127#else
128static inline int ip6_mroute_opt(int opt)
129{
130 return 0;
131}
132#endif
133
134struct sock;
135
YOSHIFUJI Hideakie0835f82008-07-03 16:51:22 +0900136#ifdef CONFIG_IPV6_MROUTE
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900137extern int ip6_mroute_setsockopt(struct sock *, int, char __user *, int);
138extern int ip6_mroute_getsockopt(struct sock *, int, char __user *, int __user *);
139extern int ip6_mr_input(struct sk_buff *skb);
140extern int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg);
Wang Chen623d1a12008-07-03 12:13:30 +0800141extern int ip6_mr_init(void);
142extern void ip6_mr_cleanup(void);
YOSHIFUJI Hideakie0835f82008-07-03 16:51:22 +0900143#else
144static inline
145int ip6_mroute_setsockopt(struct sock *sock,
146 int optname, char __user *optval, int optlen)
147{
148 return -ENOPROTOOPT;
149}
150
151static inline
152int ip6_mroute_getsockopt(struct sock *sock,
153 int optname, char __user *optval, int __user *optlen)
154{
155 return -ENOPROTOOPT;
156}
157
158static inline
159int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg)
160{
161 return -ENOIOCTLCMD;
162}
163
164static inline int ip6_mr_init(void)
165{
166 return 0;
167}
168
169static inline void ip6_mr_cleanup(void)
170{
171 return;
172}
173#endif
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900174
175struct mif_device
176{
177 struct net_device *dev; /* Device we are using */
178 unsigned long bytes_in,bytes_out;
179 unsigned long pkt_in,pkt_out; /* Statistics */
180 unsigned long rate_limit; /* Traffic shaping (NI) */
181 unsigned char threshold; /* TTL threshold */
182 unsigned short flags; /* Control flags */
183 int link; /* Physical interface index */
184};
185
186#define VIFF_STATIC 0x8000
187
188struct mfc6_cache
189{
190 struct mfc6_cache *next; /* Next entry on cache line */
Benjamin Thery58701ad2008-12-10 16:22:34 -0800191#ifdef CONFIG_NET_NS
192 struct net *mfc6_net;
193#endif
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900194 struct in6_addr mf6c_mcastgrp; /* Group the entry belongs to */
195 struct in6_addr mf6c_origin; /* Source of packet */
196 mifi_t mf6c_parent; /* Source interface */
197 int mfc_flags; /* Flags on line */
198
199 union {
200 struct {
201 unsigned long expires;
202 struct sk_buff_head unresolved; /* Unresolved buffers */
203 } unres;
204 struct {
205 unsigned long last_assert;
206 int minvif;
207 int maxvif;
208 unsigned long bytes;
209 unsigned long pkt;
210 unsigned long wrong_if;
211 unsigned char ttls[MAXMIFS]; /* TTL thresholds */
212 } res;
213 } mfc_un;
214};
215
Benjamin Thery58701ad2008-12-10 16:22:34 -0800216static inline
217struct net *mfc6_net(const struct mfc6_cache *mfc)
218{
219 return read_pnet(&mfc->mfc6_net);
220}
221
222static inline
223void mfc6_net_set(struct mfc6_cache *mfc, struct net *net)
224{
225 write_pnet(&mfc->mfc6_net, hold_net(net));
226}
227
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900228#define MFC_STATIC 1
229#define MFC_NOTIFY 2
230
231#define MFC6_LINES 64
232
233#define MFC6_HASH(a, g) (((__force u32)(a)->s6_addr32[0] ^ \
234 (__force u32)(a)->s6_addr32[1] ^ \
235 (__force u32)(a)->s6_addr32[2] ^ \
236 (__force u32)(a)->s6_addr32[3] ^ \
237 (__force u32)(g)->s6_addr32[0] ^ \
238 (__force u32)(g)->s6_addr32[1] ^ \
239 (__force u32)(g)->s6_addr32[2] ^ \
240 (__force u32)(g)->s6_addr32[3]) % MFC6_LINES)
241
242#define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */
243
244#endif
245
246#ifdef __KERNEL__
247struct rtmsg;
Benjamin Thery8229efd2008-12-10 16:30:15 -0800248extern int ip6mr_get_route(struct net *net, struct sk_buff *skb,
249 struct rtmsg *rtm, int nowait);
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900250
251#ifdef CONFIG_IPV6_MROUTE
Benjamin Therybd91b8b2008-12-10 16:07:08 -0800252static inline struct sock *mroute6_socket(struct net *net)
253{
254 return net->ipv6.mroute6_sk;
255}
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900256extern int ip6mr_sk_done(struct sock *sk);
257#else
Benjamin Therybd91b8b2008-12-10 16:07:08 -0800258static inline struct sock *mroute6_socket(struct net *net) { return NULL; }
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900259static inline int ip6mr_sk_done(struct sock *sk) { return 0; }
260#endif
261#endif
262
263/*
264 * Structure used to communicate from kernel to multicast router.
265 * We'll overlay the structure onto an MLD header (not an IPv6 heder like igmpmsg{}
266 * used for IPv4 implementation). This is because this structure will be passed via an
267 * IPv6 raw socket, on wich an application will only receiver the payload i.e the data after
268 * the IPv6 header and all the extension headers. (See section 3 of RFC 3542)
269 */
270
271struct mrt6msg {
272#define MRT6MSG_NOCACHE 1
YOSHIFUJI Hideaki14fb64e2008-04-03 09:22:54 +0900273#define MRT6MSG_WRONGMIF 2
274#define MRT6MSG_WHOLEPKT 3 /* used for use level encap */
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900275 __u8 im6_mbz; /* must be zero */
276 __u8 im6_msgtype; /* what type of message */
277 __u16 im6_mif; /* mif rec'd on */
278 __u32 im6_pad; /* padding for 64 bit arch */
279 struct in6_addr im6_src, im6_dst;
280};
281
282#endif