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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>
YOSHIFUJI Hideaki80a94922008-04-03 09:22:52 +09005#include <linux/types.h>
6#ifdef __KERNEL__
Linus Torvalds1da177e2005-04-16 15:20:36 -07007#include <linux/in.h>
YOSHIFUJI Hideaki80a94922008-04-03 09:22:52 +09008#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07009
10/*
11 * Based on the MROUTING 3.5 defines primarily to keep
12 * source compatibility with BSD.
13 *
14 * See the mrouted code for the original history.
15 *
16 * Protocol Independent Multicast (PIM) data structures included
17 * Carlos Picoto (cap@di.fc.ul.pt)
18 *
19 */
20
21#define MRT_BASE 200
22#define MRT_INIT (MRT_BASE) /* Activate the kernel mroute code */
23#define MRT_DONE (MRT_BASE+1) /* Shutdown the kernel mroute */
24#define MRT_ADD_VIF (MRT_BASE+2) /* Add a virtual interface */
25#define MRT_DEL_VIF (MRT_BASE+3) /* Delete a virtual interface */
26#define MRT_ADD_MFC (MRT_BASE+4) /* Add a multicast forwarding entry */
27#define MRT_DEL_MFC (MRT_BASE+5) /* Delete a multicast forwarding entry */
28#define MRT_VERSION (MRT_BASE+6) /* Get the kernel multicast version */
29#define MRT_ASSERT (MRT_BASE+7) /* Activate PIM assert mode */
30#define MRT_PIM (MRT_BASE+8) /* enable PIM code */
31
32#define SIOCGETVIFCNT SIOCPROTOPRIVATE /* IP protocol privates */
33#define SIOCGETSGCNT (SIOCPROTOPRIVATE+1)
34#define SIOCGETRPF (SIOCPROTOPRIVATE+2)
35
36#define MAXVIFS 32
37typedef unsigned long vifbitmap_t; /* User mode code depends on this lot */
38typedef unsigned short vifi_t;
39#define ALL_VIFS ((vifi_t)(-1))
40
41/*
42 * Same idea as select
43 */
44
45#define VIFM_SET(n,m) ((m)|=(1<<(n)))
46#define VIFM_CLR(n,m) ((m)&=~(1<<(n)))
47#define VIFM_ISSET(n,m) ((m)&(1<<(n)))
48#define VIFM_CLRALL(m) ((m)=0)
49#define VIFM_COPY(mfrom,mto) ((mto)=(mfrom))
50#define VIFM_SAME(m1,m2) ((m1)==(m2))
51
52/*
53 * Passed by mrouted for an MRT_ADD_VIF - again we use the
54 * mrouted 3.6 structures for compatibility
55 */
56
57struct vifctl {
58 vifi_t vifc_vifi; /* Index of VIF */
59 unsigned char vifc_flags; /* VIFF_ flags */
60 unsigned char vifc_threshold; /* ttl limit */
61 unsigned int vifc_rate_limit; /* Rate limiter values (NI) */
Ilia Kee5e81f2009-09-16 05:53:07 +000062 union {
63 struct in_addr vifc_lcl_addr; /* Local interface address */
64 int vifc_lcl_ifindex; /* Local interface index */
65 };
Linus Torvalds1da177e2005-04-16 15:20:36 -070066 struct in_addr vifc_rmt_addr; /* IPIP tunnel addr */
67};
68
Ilia Kee5e81f2009-09-16 05:53:07 +000069#define VIFF_TUNNEL 0x1 /* IPIP tunnel */
70#define VIFF_SRCRT 0x2 /* NI */
71#define VIFF_REGISTER 0x4 /* register vif */
72#define VIFF_USE_IFINDEX 0x8 /* use vifc_lcl_ifindex instead of
73 vifc_lcl_addr to find an interface */
Linus Torvalds1da177e2005-04-16 15:20:36 -070074
75/*
76 * Cache manipulation structures for mrouted and PIMd
77 */
78
79struct mfcctl
80{
81 struct in_addr mfcc_origin; /* Origin of mcast */
82 struct in_addr mfcc_mcastgrp; /* Group in question */
83 vifi_t mfcc_parent; /* Where it arrived */
84 unsigned char mfcc_ttls[MAXVIFS]; /* Where it is going */
85 unsigned int mfcc_pkt_cnt; /* pkt count for src-grp */
86 unsigned int mfcc_byte_cnt;
87 unsigned int mfcc_wrong_if;
88 int mfcc_expire;
89};
90
91/*
92 * Group count retrieval for mrouted
93 */
94
95struct sioc_sg_req
96{
97 struct in_addr src;
98 struct in_addr grp;
99 unsigned long pktcnt;
100 unsigned long bytecnt;
101 unsigned long wrong_if;
102};
103
104/*
105 * To get vif packet counts
106 */
107
108struct sioc_vif_req
109{
110 vifi_t vifi; /* Which iface */
111 unsigned long icount; /* In packets */
112 unsigned long ocount; /* Out packets */
113 unsigned long ibytes; /* In bytes */
114 unsigned long obytes; /* Out bytes */
115};
116
117/*
118 * This is the format the mroute daemon expects to see IGMP control
119 * data. Magically happens to be like an IP packet as per the original
120 */
121
122struct igmpmsg
123{
124 __u32 unused1,unused2;
125 unsigned char im_msgtype; /* What is this */
126 unsigned char im_mbz; /* Must be zero */
127 unsigned char im_vif; /* Interface (this ought to be a vifi_t!) */
128 unsigned char unused3;
129 struct in_addr im_src,im_dst;
130};
131
132/*
133 * That's all usermode folks
134 */
135
136#ifdef __KERNEL__
David S. Miller7c19a3d2008-08-29 14:37:23 -0700137#include <linux/pim.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138#include <net/sock.h>
139
Pavel Emelyanov6a9fb942007-11-05 21:32:31 -0800140#ifdef CONFIG_IP_MROUTE
141static inline int ip_mroute_opt(int opt)
142{
143 return (opt >= MRT_BASE) && (opt <= MRT_BASE + 10);
144}
145#else
146static inline int ip_mroute_opt(int opt)
147{
148 return 0;
149}
150#endif
151
YOSHIFUJI Hideakie0835f82008-07-03 16:51:22 +0900152#ifdef CONFIG_IP_MROUTE
David S. Millerb7058842009-09-30 16:12:20 -0700153extern int ip_mroute_setsockopt(struct sock *, int, char __user *, unsigned int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154extern int ip_mroute_getsockopt(struct sock *, int, char __user *, int __user *);
155extern int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg);
Wang Chen03d2f892008-07-03 12:13:36 +0800156extern int ip_mr_init(void);
YOSHIFUJI Hideakie0835f82008-07-03 16:51:22 +0900157#else
158static inline
159int ip_mroute_setsockopt(struct sock *sock,
David S. Millerb7058842009-09-30 16:12:20 -0700160 int optname, char __user *optval, unsigned int optlen)
YOSHIFUJI Hideakie0835f82008-07-03 16:51:22 +0900161{
162 return -ENOPROTOOPT;
163}
164
165static inline
166int ip_mroute_getsockopt(struct sock *sock,
167 int optname, char __user *optval, int __user *optlen)
168{
169 return -ENOPROTOOPT;
170}
171
172static inline
173int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg)
174{
175 return -ENOIOCTLCMD;
176}
177
178static inline int ip_mr_init(void)
179{
180 return 0;
181}
182#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183
184struct vif_device
185{
186 struct net_device *dev; /* Device we are using */
187 unsigned long bytes_in,bytes_out;
188 unsigned long pkt_in,pkt_out; /* Statistics */
189 unsigned long rate_limit; /* Traffic shaping (NI) */
190 unsigned char threshold; /* TTL threshold */
191 unsigned short flags; /* Control flags */
Al Viro114c7842006-09-27 18:39:29 -0700192 __be32 local,remote; /* Addresses(remote for tunnels)*/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193 int link; /* Physical interface index */
194};
195
196#define VIFF_STATIC 0x8000
197
198struct mfc_cache
199{
200 struct mfc_cache *next; /* Next entry on cache line */
Benjamin Thery5c0a66f2009-01-22 04:56:17 +0000201#ifdef CONFIG_NET_NS
202 struct net *mfc_net;
203#endif
Al Viro114c7842006-09-27 18:39:29 -0700204 __be32 mfc_mcastgrp; /* Group the entry belongs to */
205 __be32 mfc_origin; /* Source of packet */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206 vifi_t mfc_parent; /* Source interface */
207 int mfc_flags; /* Flags on line */
208
209 union {
210 struct {
211 unsigned long expires;
212 struct sk_buff_head unresolved; /* Unresolved buffers */
213 } unres;
214 struct {
215 unsigned long last_assert;
216 int minvif;
217 int maxvif;
218 unsigned long bytes;
219 unsigned long pkt;
220 unsigned long wrong_if;
221 unsigned char ttls[MAXVIFS]; /* TTL thresholds */
222 } res;
223 } mfc_un;
224};
225
Benjamin Thery5c0a66f2009-01-22 04:56:17 +0000226static inline
227struct net *mfc_net(const struct mfc_cache *mfc)
228{
229 return read_pnet(&mfc->mfc_net);
230}
231
232static inline
233void mfc_net_set(struct mfc_cache *mfc, struct net *net)
234{
235 write_pnet(&mfc->mfc_net, hold_net(net));
236}
237
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238#define MFC_STATIC 1
239#define MFC_NOTIFY 2
240
241#define MFC_LINES 64
242
243#ifdef __BIG_ENDIAN
Al Viro114c7842006-09-27 18:39:29 -0700244#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 -0700245#else
Al Viro114c7842006-09-27 18:39:29 -0700246#define MFC_HASH(a,b) ((((__force u32)(__be32)a)^(((__force u32)(__be32)b)>>2))&(MFC_LINES-1))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247#endif
248
249#endif
250
251
252#define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */
253
254/*
255 * Pseudo messages used by mrouted
256 */
257
258#define IGMPMSG_NOCACHE 1 /* Kern cache fill request to mrouted */
259#define IGMPMSG_WRONGVIF 2 /* For PIM assert processing (unused) */
260#define IGMPMSG_WHOLEPKT 3 /* For PIM Register processing */
261
262#ifdef __KERNEL__
Linus Torvalds1da177e2005-04-16 15:20:36 -0700263struct rtmsg;
Benjamin Thery4feb88e2009-01-22 04:56:23 +0000264extern int ipmr_get_route(struct net *net, struct sk_buff *skb,
265 struct rtmsg *rtm, int nowait);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266#endif
267
268#endif