1 #ifndef __LINUX_MROUTE_H
2 #define __LINUX_MROUTE_H
4 #include <linux/sockios.h>
5 #include <linux/types.h>
11 * Based on the MROUTING 3.5 defines primarily to keep
12 * source compatibility with BSD.
14 * See the mrouted code for the original history.
16 * Protocol Independent Multicast (PIM) data structures included
17 * Carlos Picoto (cap@di.fc.ul.pt)
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 */
32 #define SIOCGETVIFCNT SIOCPROTOPRIVATE /* IP protocol privates */
33 #define SIOCGETSGCNT (SIOCPROTOPRIVATE+1)
34 #define SIOCGETRPF (SIOCPROTOPRIVATE+2)
37 typedef unsigned long vifbitmap_t
; /* User mode code depends on this lot */
38 typedef unsigned short vifi_t
;
39 #define ALL_VIFS ((vifi_t)(-1))
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))
53 * Passed by mrouted for an MRT_ADD_VIF - again we use the
54 * mrouted 3.6 structures for compatibility
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) */
63 struct in_addr vifc_lcl_addr
; /* Local interface address */
64 int vifc_lcl_ifindex
; /* Local interface index */
66 struct in_addr vifc_rmt_addr
; /* IPIP tunnel addr */
69 #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 */
76 * Cache manipulation structures for mrouted and PIMd
80 struct in_addr mfcc_origin
; /* Origin of mcast */
81 struct in_addr mfcc_mcastgrp
; /* Group in question */
82 vifi_t mfcc_parent
; /* Where it arrived */
83 unsigned char mfcc_ttls
[MAXVIFS
]; /* Where it is going */
84 unsigned int mfcc_pkt_cnt
; /* pkt count for src-grp */
85 unsigned int mfcc_byte_cnt
;
86 unsigned int mfcc_wrong_if
;
91 * Group count retrieval for mrouted
98 unsigned long bytecnt
;
99 unsigned long wrong_if
;
103 * To get vif packet counts
106 struct sioc_vif_req
{
107 vifi_t vifi
; /* Which iface */
108 unsigned long icount
; /* In packets */
109 unsigned long ocount
; /* Out packets */
110 unsigned long ibytes
; /* In bytes */
111 unsigned long obytes
; /* Out bytes */
115 * This is the format the mroute daemon expects to see IGMP control
116 * data. Magically happens to be like an IP packet as per the original
120 __u32 unused1
,unused2
;
121 unsigned char im_msgtype
; /* What is this */
122 unsigned char im_mbz
; /* Must be zero */
123 unsigned char im_vif
; /* Interface (this ought to be a vifi_t!) */
124 unsigned char unused3
;
125 struct in_addr im_src
,im_dst
;
129 * That's all usermode folks
133 #include <linux/pim.h>
134 #include <net/sock.h>
136 #ifdef CONFIG_IP_MROUTE
137 static inline int ip_mroute_opt(int opt
)
139 return (opt
>= MRT_BASE
) && (opt
<= MRT_BASE
+ 10);
142 static inline int ip_mroute_opt(int opt
)
148 #ifdef CONFIG_IP_MROUTE
149 extern int ip_mroute_setsockopt(struct sock
*, int, char __user
*, unsigned int);
150 extern int ip_mroute_getsockopt(struct sock
*, int, char __user
*, int __user
*);
151 extern int ipmr_ioctl(struct sock
*sk
, int cmd
, void __user
*arg
);
152 extern int ip_mr_init(void);
155 int ip_mroute_setsockopt(struct sock
*sock
,
156 int optname
, char __user
*optval
, unsigned int optlen
)
162 int ip_mroute_getsockopt(struct sock
*sock
,
163 int optname
, char __user
*optval
, int __user
*optlen
)
169 int ipmr_ioctl(struct sock
*sk
, int cmd
, void __user
*arg
)
174 static inline int ip_mr_init(void)
181 struct net_device
*dev
; /* Device we are using */
182 unsigned long bytes_in
,bytes_out
;
183 unsigned long pkt_in
,pkt_out
; /* Statistics */
184 unsigned long rate_limit
; /* Traffic shaping (NI) */
185 unsigned char threshold
; /* TTL threshold */
186 unsigned short flags
; /* Control flags */
187 __be32 local
,remote
; /* Addresses(remote for tunnels)*/
188 int link
; /* Physical interface index */
191 #define VIFF_STATIC 0x8000
194 struct mfc_cache
*next
; /* Next entry on cache line */
198 __be32 mfc_mcastgrp
; /* Group the entry belongs to */
199 __be32 mfc_origin
; /* Source of packet */
200 vifi_t mfc_parent
; /* Source interface */
201 int mfc_flags
; /* Flags on line */
205 unsigned long expires
;
206 struct sk_buff_head unresolved
; /* Unresolved buffers */
209 unsigned long last_assert
;
214 unsigned long wrong_if
;
215 unsigned char ttls
[MAXVIFS
]; /* TTL thresholds */
221 struct net
*mfc_net(const struct mfc_cache
*mfc
)
223 return read_pnet(&mfc
->mfc_net
);
227 void mfc_net_set(struct mfc_cache
*mfc
, struct net
*net
)
229 write_pnet(&mfc
->mfc_net
, hold_net(net
));
238 #define MFC_HASH(a,b) (((((__force u32)(__be32)a)>>24)^(((__force u32)(__be32)b)>>26))&(MFC_LINES-1))
240 #define MFC_HASH(a,b) ((((__force u32)(__be32)a)^(((__force u32)(__be32)b)>>2))&(MFC_LINES-1))
246 #define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */
249 * Pseudo messages used by mrouted
252 #define IGMPMSG_NOCACHE 1 /* Kern cache fill request to mrouted */
253 #define IGMPMSG_WRONGVIF 2 /* For PIM assert processing (unused) */
254 #define IGMPMSG_WHOLEPKT 3 /* For PIM Register processing */
258 extern int ipmr_get_route(struct net
*net
, struct sk_buff
*skb
,
259 struct rtmsg
*rtm
, int nowait
);
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