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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 */
Arnd Bergmann85efde62009-02-26 00:51:39 +010068 __u16 mif6c_pifi; /* the index of the physical IF */
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +090069 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
Eric Dumazetd94d9fe2009-11-04 09:50:58 -080078struct mf6cctl {
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +090079 struct sockaddr_in6 mf6cc_origin; /* Origin of mcast */
80 struct sockaddr_in6 mf6cc_mcastgrp; /* Group in question */
81 mifi_t mf6cc_parent; /* Where it arrived */
82 struct if_set mf6cc_ifset; /* Where it is going */
83};
84
85/*
86 * Group count retrieval for pim6sd
87 */
88
Eric Dumazetd94d9fe2009-11-04 09:50:58 -080089struct sioc_sg_req6 {
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +090090 struct sockaddr_in6 src;
91 struct sockaddr_in6 grp;
92 unsigned long pktcnt;
93 unsigned long bytecnt;
94 unsigned long wrong_if;
95};
96
97/*
98 * To get vif packet counts
99 */
100
Eric Dumazetd94d9fe2009-11-04 09:50:58 -0800101struct sioc_mif_req6 {
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900102 mifi_t mifi; /* 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 * That's all usermode folks
111 */
112
113#ifdef __KERNEL__
114
David S. Miller7c19a3d2008-08-29 14:37:23 -0700115#include <linux/pim.h>
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900116#include <linux/skbuff.h> /* for struct sk_buff_head */
Benjamin Therybd91b8b2008-12-10 16:07:08 -0800117#include <net/net_namespace.h>
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900118
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900119#ifdef CONFIG_IPV6_MROUTE
120static inline int ip6_mroute_opt(int opt)
121{
122 return (opt >= MRT6_BASE) && (opt <= MRT6_BASE + 10);
123}
124#else
125static inline int ip6_mroute_opt(int opt)
126{
127 return 0;
128}
129#endif
130
131struct sock;
132
YOSHIFUJI Hideakie0835f82008-07-03 16:51:22 +0900133#ifdef CONFIG_IPV6_MROUTE
David S. Millerb7058842009-09-30 16:12:20 -0700134extern int ip6_mroute_setsockopt(struct sock *, int, char __user *, unsigned int);
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900135extern int ip6_mroute_getsockopt(struct sock *, int, char __user *, int __user *);
136extern int ip6_mr_input(struct sk_buff *skb);
137extern int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg);
Wang Chen623d1a12008-07-03 12:13:30 +0800138extern int ip6_mr_init(void);
139extern void ip6_mr_cleanup(void);
YOSHIFUJI Hideakie0835f82008-07-03 16:51:22 +0900140#else
141static inline
142int ip6_mroute_setsockopt(struct sock *sock,
David S. Millerb7058842009-09-30 16:12:20 -0700143 int optname, char __user *optval, unsigned int optlen)
YOSHIFUJI Hideakie0835f82008-07-03 16:51:22 +0900144{
145 return -ENOPROTOOPT;
146}
147
148static inline
149int ip6_mroute_getsockopt(struct sock *sock,
150 int optname, char __user *optval, int __user *optlen)
151{
152 return -ENOPROTOOPT;
153}
154
155static inline
156int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg)
157{
158 return -ENOIOCTLCMD;
159}
160
161static inline int ip6_mr_init(void)
162{
163 return 0;
164}
165
166static inline void ip6_mr_cleanup(void)
167{
168 return;
169}
170#endif
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900171
Eric Dumazetd94d9fe2009-11-04 09:50:58 -0800172struct mif_device {
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900173 struct net_device *dev; /* Device we are using */
174 unsigned long bytes_in,bytes_out;
175 unsigned long pkt_in,pkt_out; /* Statistics */
176 unsigned long rate_limit; /* Traffic shaping (NI) */
177 unsigned char threshold; /* TTL threshold */
178 unsigned short flags; /* Control flags */
179 int link; /* Physical interface index */
180};
181
182#define VIFF_STATIC 0x8000
183
Eric Dumazetd94d9fe2009-11-04 09:50:58 -0800184struct mfc6_cache {
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900185 struct mfc6_cache *next; /* Next entry on cache line */
Benjamin Thery58701ad2008-12-10 16:22:34 -0800186#ifdef CONFIG_NET_NS
187 struct net *mfc6_net;
188#endif
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900189 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
Benjamin Thery58701ad2008-12-10 16:22:34 -0800211static inline
212struct net *mfc6_net(const struct mfc6_cache *mfc)
213{
214 return read_pnet(&mfc->mfc6_net);
215}
216
217static inline
218void mfc6_net_set(struct mfc6_cache *mfc, struct net *net)
219{
220 write_pnet(&mfc->mfc6_net, hold_net(net));
221}
222
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900223#define MFC_STATIC 1
224#define MFC_NOTIFY 2
225
226#define MFC6_LINES 64
227
228#define MFC6_HASH(a, g) (((__force u32)(a)->s6_addr32[0] ^ \
229 (__force u32)(a)->s6_addr32[1] ^ \
230 (__force u32)(a)->s6_addr32[2] ^ \
231 (__force u32)(a)->s6_addr32[3] ^ \
232 (__force u32)(g)->s6_addr32[0] ^ \
233 (__force u32)(g)->s6_addr32[1] ^ \
234 (__force u32)(g)->s6_addr32[2] ^ \
235 (__force u32)(g)->s6_addr32[3]) % MFC6_LINES)
236
237#define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */
238
239#endif
240
241#ifdef __KERNEL__
242struct rtmsg;
Benjamin Thery8229efd2008-12-10 16:30:15 -0800243extern int ip6mr_get_route(struct net *net, struct sk_buff *skb,
244 struct rtmsg *rtm, int nowait);
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900245
246#ifdef CONFIG_IPV6_MROUTE
Benjamin Therybd91b8b2008-12-10 16:07:08 -0800247static inline struct sock *mroute6_socket(struct net *net)
248{
249 return net->ipv6.mroute6_sk;
250}
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900251extern int ip6mr_sk_done(struct sock *sk);
252#else
Benjamin Therybd91b8b2008-12-10 16:07:08 -0800253static inline struct sock *mroute6_socket(struct net *net) { return NULL; }
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900254static inline int ip6mr_sk_done(struct sock *sk) { return 0; }
255#endif
256#endif
257
258/*
259 * Structure used to communicate from kernel to multicast router.
260 * We'll overlay the structure onto an MLD header (not an IPv6 heder like igmpmsg{}
261 * used for IPv4 implementation). This is because this structure will be passed via an
262 * IPv6 raw socket, on wich an application will only receiver the payload i.e the data after
263 * the IPv6 header and all the extension headers. (See section 3 of RFC 3542)
264 */
265
266struct mrt6msg {
267#define MRT6MSG_NOCACHE 1
YOSHIFUJI Hideaki14fb64e2008-04-03 09:22:54 +0900268#define MRT6MSG_WRONGMIF 2
269#define MRT6MSG_WHOLEPKT 3 /* used for use level encap */
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900270 __u8 im6_mbz; /* must be zero */
271 __u8 im6_msgtype; /* what type of message */
272 __u16 im6_mif; /* mif rec'd on */
273 __u32 im6_pad; /* padding for 64 bit arch */
274 struct in6_addr im6_src, im6_dst;
275};
276
277#endif