mroute6.h (5004B) - Raw
1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 #ifndef __LINUX_MROUTE6_H 3 #define __LINUX_MROUTE6_H 4 5 #include <linux/const.h> 6 #include <linux/types.h> 7 #include <linux/sockios.h> 8 #include <linux/in6.h> /* For struct sockaddr_in6. */ 9 10 /* 11 * Based on the MROUTING 3.5 defines primarily to keep 12 * source compatibility with BSD. 13 * 14 * See the pim6sd 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 MRT6_BASE 200 22 #define MRT6_INIT (MRT6_BASE) /* Activate the kernel mroute code */ 23 #define MRT6_DONE (MRT6_BASE+1) /* Shutdown the kernel mroute */ 24 #define MRT6_ADD_MIF (MRT6_BASE+2) /* Add a virtual interface */ 25 #define MRT6_DEL_MIF (MRT6_BASE+3) /* Delete a virtual interface */ 26 #define MRT6_ADD_MFC (MRT6_BASE+4) /* Add a multicast forwarding entry */ 27 #define MRT6_DEL_MFC (MRT6_BASE+5) /* Delete a multicast forwarding entry */ 28 #define MRT6_VERSION (MRT6_BASE+6) /* Get the kernel multicast version */ 29 #define MRT6_ASSERT (MRT6_BASE+7) /* Activate PIM assert mode */ 30 #define MRT6_PIM (MRT6_BASE+8) /* enable PIM code */ 31 #define MRT6_TABLE (MRT6_BASE+9) /* Specify mroute table ID */ 32 #define MRT6_ADD_MFC_PROXY (MRT6_BASE+10) /* Add a (*,*|G) mfc entry */ 33 #define MRT6_DEL_MFC_PROXY (MRT6_BASE+11) /* Del a (*,*|G) mfc entry */ 34 #define MRT6_FLUSH (MRT6_BASE+12) /* Flush all mfc entries and/or vifs */ 35 #define MRT6_MAX (MRT6_BASE+12) 36 37 #define SIOCGETMIFCNT_IN6 SIOCPROTOPRIVATE /* IP protocol privates */ 38 #define SIOCGETSGCNT_IN6 (SIOCPROTOPRIVATE+1) 39 #define SIOCGETRPF (SIOCPROTOPRIVATE+2) 40 41 /* MRT6_FLUSH optional flags */ 42 #define MRT6_FLUSH_MFC 1 /* Flush multicast entries */ 43 #define MRT6_FLUSH_MFC_STATIC 2 /* Flush static multicast entries */ 44 #define MRT6_FLUSH_MIFS 4 /* Flushing multicast vifs */ 45 #define MRT6_FLUSH_MIFS_STATIC 8 /* Flush static multicast vifs */ 46 47 #define MAXMIFS 32 48 typedef unsigned long mifbitmap_t; /* User mode code depends on this lot */ 49 typedef unsigned short mifi_t; 50 #define ALL_MIFS ((mifi_t)(-1)) 51 52 #ifndef IF_SETSIZE 53 #define IF_SETSIZE 256 54 #endif 55 56 typedef __u32 if_mask; 57 #define NIFBITS (sizeof(if_mask) * 8) /* bits per mask */ 58 59 typedef struct if_set { 60 if_mask ifs_bits[__KERNEL_DIV_ROUND_UP(IF_SETSIZE, NIFBITS)]; 61 } if_set; 62 63 #define IF_SET(n, p) ((p)->ifs_bits[(n)/NIFBITS] |= (1 << ((n) % NIFBITS))) 64 #define IF_CLR(n, p) ((p)->ifs_bits[(n)/NIFBITS] &= ~(1 << ((n) % NIFBITS))) 65 #define IF_ISSET(n, p) ((p)->ifs_bits[(n)/NIFBITS] & (1 << ((n) % NIFBITS))) 66 #define IF_COPY(f, t) bcopy(f, t, sizeof(*(f))) 67 #define IF_ZERO(p) bzero(p, sizeof(*(p))) 68 69 /* 70 * Passed by mrouted for an MRT_ADD_MIF - again we use the 71 * mrouted 3.6 structures for compatibility 72 */ 73 74 struct mif6ctl { 75 mifi_t mif6c_mifi; /* Index of MIF */ 76 unsigned char mif6c_flags; /* MIFF_ flags */ 77 unsigned char vifc_threshold; /* ttl limit */ 78 __u16 mif6c_pifi; /* the index of the physical IF */ 79 unsigned int vifc_rate_limit; /* Rate limiter values (NI) */ 80 }; 81 82 #define MIFF_REGISTER 0x1 /* register vif */ 83 84 /* 85 * Cache manipulation structures for mrouted and PIMd 86 */ 87 88 struct mf6cctl { 89 struct sockaddr_in6 mf6cc_origin; /* Origin of mcast */ 90 struct sockaddr_in6 mf6cc_mcastgrp; /* Group in question */ 91 mifi_t mf6cc_parent; /* Where it arrived */ 92 struct if_set mf6cc_ifset; /* Where it is going */ 93 }; 94 95 /* 96 * Group count retrieval for pim6sd 97 */ 98 99 struct sioc_sg_req6 { 100 struct sockaddr_in6 src; 101 struct sockaddr_in6 grp; 102 unsigned long pktcnt; 103 unsigned long bytecnt; 104 unsigned long wrong_if; 105 }; 106 107 /* 108 * To get vif packet counts 109 */ 110 111 struct sioc_mif_req6 { 112 mifi_t mifi; /* Which iface */ 113 unsigned long icount; /* In packets */ 114 unsigned long ocount; /* Out packets */ 115 unsigned long ibytes; /* In bytes */ 116 unsigned long obytes; /* Out bytes */ 117 }; 118 119 /* 120 * That's all usermode folks 121 */ 122 123 124 125 /* 126 * Structure used to communicate from kernel to multicast router. 127 * We'll overlay the structure onto an MLD header (not an IPv6 heder like igmpmsg{} 128 * used for IPv4 implementation). This is because this structure will be passed via an 129 * IPv6 raw socket, on which an application will only receiver the payload i.e the data after 130 * the IPv6 header and all the extension headers. (See section 3 of RFC 3542) 131 */ 132 133 struct mrt6msg { 134 #define MRT6MSG_NOCACHE 1 135 #define MRT6MSG_WRONGMIF 2 136 #define MRT6MSG_WHOLEPKT 3 /* used for use level encap */ 137 #define MRT6MSG_WRMIFWHOLE 4 /* For PIM Register and assert processing */ 138 __u8 im6_mbz; /* must be zero */ 139 __u8 im6_msgtype; /* what type of message */ 140 __u16 im6_mif; /* mif rec'd on */ 141 __u32 im6_pad; /* padding for 64 bit arch */ 142 struct in6_addr im6_src, im6_dst; 143 }; 144 145 /* ip6mr netlink cache report attributes */ 146 enum { 147 IP6MRA_CREPORT_UNSPEC, 148 IP6MRA_CREPORT_MSGTYPE, 149 IP6MRA_CREPORT_MIF_ID, 150 IP6MRA_CREPORT_SRC_ADDR, 151 IP6MRA_CREPORT_DST_ADDR, 152 IP6MRA_CREPORT_PKT, 153 __IP6MRA_CREPORT_MAX 154 }; 155 #define IP6MRA_CREPORT_MAX (__IP6MRA_CREPORT_MAX - 1) 156 157 #endif /* __LINUX_MROUTE6_H */