1 #ifndef __LINUX_MROUTE_H
2 #define __LINUX_MROUTE_H
4 #include <linux/sockios.h>
8 * Based on the MROUTING 3.5 defines primarily to keep
9 * source compatibility with BSD.
11 * See the mrouted code for the original history.
13 * Protocol Independent Multicast (PIM) data structures included
14 * Carlos Picoto (cap@di.fc.ul.pt)
19 #define MRT_INIT (MRT_BASE) /* Activate the kernel mroute code */
20 #define MRT_DONE (MRT_BASE+1) /* Shutdown the kernel mroute */
21 #define MRT_ADD_VIF (MRT_BASE+2) /* Add a virtual interface */
22 #define MRT_DEL_VIF (MRT_BASE+3) /* Delete a virtual interface */
23 #define MRT_ADD_MFC (MRT_BASE+4) /* Add a multicast forwarding entry */
24 #define MRT_DEL_MFC (MRT_BASE+5) /* Delete a multicast forwarding entry */
25 #define MRT_VERSION (MRT_BASE+6) /* Get the kernel multicast version */
26 #define MRT_ASSERT (MRT_BASE+7) /* Activate PIM assert mode */
27 #define MRT_PIM (MRT_BASE+8) /* enable PIM code */
29 #define SIOCGETVIFCNT SIOCPROTOPRIVATE /* IP protocol privates */
30 #define SIOCGETSGCNT (SIOCPROTOPRIVATE+1)
31 #define SIOCGETRPF (SIOCPROTOPRIVATE+2)
34 typedef unsigned long vifbitmap_t
; /* User mode code depends on this lot */
35 typedef unsigned short vifi_t
;
36 #define ALL_VIFS ((vifi_t)(-1))
42 #define VIFM_SET(n,m) ((m)|=(1<<(n)))
43 #define VIFM_CLR(n,m) ((m)&=~(1<<(n)))
44 #define VIFM_ISSET(n,m) ((m)&(1<<(n)))
45 #define VIFM_CLRALL(m) ((m)=0)
46 #define VIFM_COPY(mfrom,mto) ((mto)=(mfrom))
47 #define VIFM_SAME(m1,m2) ((m1)==(m2))
50 * Passed by mrouted for an MRT_ADD_VIF - again we use the
51 * mrouted 3.6 structures for compatibility
55 vifi_t vifc_vifi
; /* Index of VIF */
56 unsigned char vifc_flags
; /* VIFF_ flags */
57 unsigned char vifc_threshold
; /* ttl limit */
58 unsigned int vifc_rate_limit
; /* Rate limiter values (NI) */
59 struct in_addr vifc_lcl_addr
; /* Our address */
60 struct in_addr vifc_rmt_addr
; /* IPIP tunnel addr */
63 #define VIFF_TUNNEL 0x1 /* IPIP tunnel */
64 #define VIFF_SRCRT 0x2 /* NI */
65 #define VIFF_REGISTER 0x4 /* register vif */
68 * Cache manipulation structures for mrouted and PIMd
73 struct in_addr mfcc_origin
; /* Origin of mcast */
74 struct in_addr mfcc_mcastgrp
; /* Group in question */
75 vifi_t mfcc_parent
; /* Where it arrived */
76 unsigned char mfcc_ttls
[MAXVIFS
]; /* Where it is going */
77 unsigned int mfcc_pkt_cnt
; /* pkt count for src-grp */
78 unsigned int mfcc_byte_cnt
;
79 unsigned int mfcc_wrong_if
;
84 * Group count retrieval for mrouted
92 unsigned long bytecnt
;
93 unsigned long wrong_if
;
97 * To get vif packet counts
102 vifi_t vifi
; /* 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 */
110 * This is the format the mroute daemon expects to see IGMP control
111 * data. Magically happens to be like an IP packet as per the original
116 __u32 unused1
,unused2
;
117 unsigned char im_msgtype
; /* What is this */
118 unsigned char im_mbz
; /* Must be zero */
119 unsigned char im_vif
; /* Interface (this ought to be a vifi_t!) */
120 unsigned char unused3
;
121 struct in_addr im_src
,im_dst
;
125 * That's all usermode folks
129 extern int ip_mroute_setsockopt(struct sock
*, int, char *, int);
130 extern int ip_mroute_getsockopt(struct sock
*, int, char *, int *);
131 extern int ipmr_ioctl(struct sock
*sk
, int cmd
, unsigned long arg
);
132 extern void ip_mr_init(void);
137 struct net_device
*dev
; /* Device we are using */
138 unsigned long bytes_in
,bytes_out
;
139 unsigned long pkt_in
,pkt_out
; /* Statistics */
140 unsigned long rate_limit
; /* Traffic shaping (NI) */
141 unsigned char threshold
; /* TTL threshold */
142 unsigned short flags
; /* Control flags */
143 __u32 local
,remote
; /* Addresses(remote for tunnels)*/
144 int link
; /* Physical interface index */
147 #define VIFF_STATIC 0x8000
151 struct mfc_cache
*next
; /* Next entry on cache line */
152 __u32 mfc_mcastgrp
; /* Group the entry belongs to */
153 __u32 mfc_origin
; /* Source of packet */
154 vifi_t mfc_parent
; /* Source interface */
155 int mfc_flags
; /* Flags on line */
159 unsigned long expires
;
160 struct sk_buff_head unresolved
; /* Unresolved buffers */
163 unsigned long last_assert
;
168 unsigned long wrong_if
;
169 unsigned char ttls
[MAXVIFS
]; /* TTL thresholds */
180 #define MFC_HASH(a,b) ((((a)>>24)^((b)>>26))&(MFC_LINES-1))
182 #define MFC_HASH(a,b) (((a)^((b)>>2))&(MFC_LINES-1))
188 #define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */
191 * Pseudo messages used by mrouted
194 #define IGMPMSG_NOCACHE 1 /* Kern cache fill request to mrouted */
195 #define IGMPMSG_WRONGVIF 2 /* For PIM assert processing (unused) */
196 #define IGMPMSG_WHOLEPKT 3 /* For PIM Register processing */
200 #define PIM_V1_VERSION __constant_htonl(0x10000000)
201 #define PIM_V1_REGISTER 1
203 #define PIM_VERSION 2
204 #define PIM_REGISTER 1
206 #define PIM_NULL_REGISTER __constant_htonl(0x40000000)
208 /* PIMv2 register message header layout (ietf-draft-idmr-pimvsm-v2-00.ps */
218 extern int pim_rcv(struct sk_buff
* , unsigned short);
219 extern int pim_rcv_v1(struct sk_buff
* , unsigned short len
);
222 extern int ipmr_get_route(struct sk_buff
*skb
, struct rtmsg
*rtm
, int nowait
);