linux-headers (unknown)
1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 #ifndef __LINUX_MROUTE_H
3 #define __LINUX_MROUTE_H
4
5 #include <linux/sockios.h>
6 #include <linux/types.h>
7 #include <linux/in.h> /* For struct in_addr. */
8
9 /* Based on the MROUTING 3.5 defines primarily to keep
10 * source compatibility with BSD.
11 *
12 * See the mrouted code for the original history.
13 *
14 * Protocol Independent Multicast (PIM) data structures included
15 * Carlos Picoto (cap@di.fc.ul.pt)
16 */
17
18 #define MRT_BASE 200
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 */
28 #define MRT_TABLE (MRT_BASE+9) /* Specify mroute table ID */
29 #define MRT_ADD_MFC_PROXY (MRT_BASE+10) /* Add a (*,*|G) mfc entry */
30 #define MRT_DEL_MFC_PROXY (MRT_BASE+11) /* Del a (*,*|G) mfc entry */
31 #define MRT_FLUSH (MRT_BASE+12) /* Flush all mfc entries and/or vifs */
32 #define MRT_MAX (MRT_BASE+12)
33
34 #define SIOCGETVIFCNT SIOCPROTOPRIVATE /* IP protocol privates */
35 #define SIOCGETSGCNT (SIOCPROTOPRIVATE+1)
36 #define SIOCGETRPF (SIOCPROTOPRIVATE+2)
37
38 /* MRT_FLUSH optional flags */
39 #define MRT_FLUSH_MFC 1 /* Flush multicast entries */
40 #define MRT_FLUSH_MFC_STATIC 2 /* Flush static multicast entries */
41 #define MRT_FLUSH_VIFS 4 /* Flush multicast vifs */
42 #define MRT_FLUSH_VIFS_STATIC 8 /* Flush static multicast vifs */
43
44 #define MAXVIFS 32
45 typedef unsigned long vifbitmap_t; /* User mode code depends on this lot */
46 typedef unsigned short vifi_t;
47 #define ALL_VIFS ((vifi_t)(-1))
48
49 /* Same idea as select */
50
51 #define VIFM_SET(n,m) ((m)|=(1<<(n)))
52 #define VIFM_CLR(n,m) ((m)&=~(1<<(n)))
53 #define VIFM_ISSET(n,m) ((m)&(1<<(n)))
54 #define VIFM_CLRALL(m) ((m)=0)
55 #define VIFM_COPY(mfrom,mto) ((mto)=(mfrom))
56 #define VIFM_SAME(m1,m2) ((m1)==(m2))
57
58 /* Passed by mrouted for an MRT_ADD_VIF - again we use the
59 * mrouted 3.6 structures for compatibility
60 */
61 struct vifctl {
62 vifi_t vifc_vifi; /* Index of VIF */
63 unsigned char vifc_flags; /* VIFF_ flags */
64 unsigned char vifc_threshold; /* ttl limit */
65 unsigned int vifc_rate_limit; /* Rate limiter values (NI) */
66 union {
67 struct in_addr vifc_lcl_addr; /* Local interface address */
68 int vifc_lcl_ifindex; /* Local interface index */
69 };
70 struct in_addr vifc_rmt_addr; /* IPIP tunnel addr */
71 };
72
73 #define VIFF_TUNNEL 0x1 /* IPIP tunnel */
74 #define VIFF_SRCRT 0x2 /* NI */
75 #define VIFF_REGISTER 0x4 /* register vif */
76 #define VIFF_USE_IFINDEX 0x8 /* use vifc_lcl_ifindex instead of
77 vifc_lcl_addr to find an interface */
78
79 /* Cache manipulation structures for mrouted and PIMd */
80 struct mfcctl {
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 /* Group count retrieval for mrouted */
92 struct sioc_sg_req {
93 struct in_addr src;
94 struct in_addr grp;
95 unsigned long pktcnt;
96 unsigned long bytecnt;
97 unsigned long wrong_if;
98 };
99
100 /* To get vif packet counts */
101 struct sioc_vif_req {
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 */
107 };
108
109 /* This is the format the mroute daemon expects to see IGMP control
110 * data. Magically happens to be like an IP packet as per the original
111 */
112 struct igmpmsg {
113 __u32 unused1,unused2;
114 unsigned char im_msgtype; /* What is this */
115 unsigned char im_mbz; /* Must be zero */
116 unsigned char im_vif; /* Low 8 bits of Interface */
117 unsigned char im_vif_hi; /* High 8 bits of Interface */
118 struct in_addr im_src,im_dst;
119 };
120
121 /* ipmr netlink table attributes */
122 enum {
123 IPMRA_TABLE_UNSPEC,
124 IPMRA_TABLE_ID,
125 IPMRA_TABLE_CACHE_RES_QUEUE_LEN,
126 IPMRA_TABLE_MROUTE_REG_VIF_NUM,
127 IPMRA_TABLE_MROUTE_DO_ASSERT,
128 IPMRA_TABLE_MROUTE_DO_PIM,
129 IPMRA_TABLE_VIFS,
130 IPMRA_TABLE_MROUTE_DO_WRVIFWHOLE,
131 __IPMRA_TABLE_MAX
132 };
133 #define IPMRA_TABLE_MAX (__IPMRA_TABLE_MAX - 1)
134
135 /* ipmr netlink vif attribute format
136 * [ IPMRA_TABLE_VIFS ] - nested attribute
137 * [ IPMRA_VIF ] - nested attribute
138 * [ IPMRA_VIFA_xxx ]
139 */
140 enum {
141 IPMRA_VIF_UNSPEC,
142 IPMRA_VIF,
143 __IPMRA_VIF_MAX
144 };
145 #define IPMRA_VIF_MAX (__IPMRA_VIF_MAX - 1)
146
147 /* vif-specific attributes */
148 enum {
149 IPMRA_VIFA_UNSPEC,
150 IPMRA_VIFA_IFINDEX,
151 IPMRA_VIFA_VIF_ID,
152 IPMRA_VIFA_FLAGS,
153 IPMRA_VIFA_BYTES_IN,
154 IPMRA_VIFA_BYTES_OUT,
155 IPMRA_VIFA_PACKETS_IN,
156 IPMRA_VIFA_PACKETS_OUT,
157 IPMRA_VIFA_LOCAL_ADDR,
158 IPMRA_VIFA_REMOTE_ADDR,
159 IPMRA_VIFA_PAD,
160 __IPMRA_VIFA_MAX
161 };
162 #define IPMRA_VIFA_MAX (__IPMRA_VIFA_MAX - 1)
163
164 /* ipmr netlink cache report attributes */
165 enum {
166 IPMRA_CREPORT_UNSPEC,
167 IPMRA_CREPORT_MSGTYPE,
168 IPMRA_CREPORT_VIF_ID,
169 IPMRA_CREPORT_SRC_ADDR,
170 IPMRA_CREPORT_DST_ADDR,
171 IPMRA_CREPORT_PKT,
172 IPMRA_CREPORT_TABLE,
173 __IPMRA_CREPORT_MAX
174 };
175 #define IPMRA_CREPORT_MAX (__IPMRA_CREPORT_MAX - 1)
176
177 /* That's all usermode folks */
178
179 #define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */
180
181 /* Pseudo messages used by mrouted */
182 #define IGMPMSG_NOCACHE 1 /* Kern cache fill request to mrouted */
183 #define IGMPMSG_WRONGVIF 2 /* For PIM assert processing (unused) */
184 #define IGMPMSG_WHOLEPKT 3 /* For PIM Register processing */
185 #define IGMPMSG_WRVIFWHOLE 4 /* For PIM Register and assert processing */
186
187 #endif /* __LINUX_MROUTE_H */
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