1 #ifndef __LINUX_MROUTE_H 2 #define __LINUX_MROUTE_H 3 4 #include <linux/sockios.h> 5 #include <linux/types.h> 6 7 /* 8 * Based on the MROUTING 3.5 defines primarily to keep 9 * source compatibility with BSD. 10 * 11 * See the mrouted code for the original history. 12 * 13 * Protocol Independent Multicast (PIM) data structures included 14 * Carlos Picoto (cap (at) di.fc.ul.pt) 15 * 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 30 #define SIOCGETVIFCNT SIOCPROTOPRIVATE /* IP protocol privates */ 31 #define SIOCGETSGCNT (SIOCPROTOPRIVATE+1) 32 #define SIOCGETRPF (SIOCPROTOPRIVATE+2) 33 34 #define MAXVIFS 32 35 typedef unsigned long vifbitmap_t; /* User mode code depends on this lot */ 36 typedef unsigned short vifi_t; 37 #define ALL_VIFS ((vifi_t)(-1)) 38 39 /* 40 * Same idea as select 41 */ 42 43 #define VIFM_SET(n,m) ((m)|=(1<<(n))) 44 #define VIFM_CLR(n,m) ((m)&=~(1<<(n))) 45 #define VIFM_ISSET(n,m) ((m)&(1<<(n))) 46 #define VIFM_CLRALL(m) ((m)=0) 47 #define VIFM_COPY(mfrom,mto) ((mto)=(mfrom)) 48 #define VIFM_SAME(m1,m2) ((m1)==(m2)) 49 50 /* 51 * Passed by mrouted for an MRT_ADD_VIF - again we use the 52 * mrouted 3.6 structures for compatibility 53 */ 54 55 struct vifctl { 56 vifi_t vifc_vifi; /* Index of VIF */ 57 unsigned char vifc_flags; /* VIFF_ flags */ 58 unsigned char vifc_threshold; /* ttl limit */ 59 unsigned int vifc_rate_limit; /* Rate limiter values (NI) */ 60 union { 61 struct in_addr vifc_lcl_addr; /* Local interface address */ 62 int vifc_lcl_ifindex; /* Local interface index */ 63 }; 64 struct in_addr vifc_rmt_addr; /* IPIP tunnel addr */ 65 }; 66 67 #define VIFF_TUNNEL 0x1 /* IPIP tunnel */ 68 #define VIFF_SRCRT 0x2 /* NI */ 69 #define VIFF_REGISTER 0x4 /* register vif */ 70 #define VIFF_USE_IFINDEX 0x8 /* use vifc_lcl_ifindex instead of 71 vifc_lcl_addr to find an interface */ 72 73 /* 74 * Cache manipulation structures for mrouted and PIMd 75 */ 76 77 struct mfcctl { 78 struct in_addr mfcc_origin; /* Origin of mcast */ 79 struct in_addr mfcc_mcastgrp; /* Group in question */ 80 vifi_t mfcc_parent; /* Where it arrived */ 81 unsigned char mfcc_ttls[MAXVIFS]; /* Where it is going */ 82 unsigned int mfcc_pkt_cnt; /* pkt count for src-grp */ 83 unsigned int mfcc_byte_cnt; 84 unsigned int mfcc_wrong_if; 85 int mfcc_expire; 86 }; 87 88 /* 89 * Group count retrieval for mrouted 90 */ 91 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 /* 101 * To get vif packet counts 102 */ 103 104 struct sioc_vif_req { 105 vifi_t vifi; /* Which iface */ 106 unsigned long icount; /* In packets */ 107 unsigned long ocount; /* Out packets */ 108 unsigned long ibytes; /* In bytes */ 109 unsigned long obytes; /* Out bytes */ 110 }; 111 112 /* 113 * This is the format the mroute daemon expects to see IGMP control 114 * data. Magically happens to be like an IP packet as per the original 115 */ 116 117 struct igmpmsg { 118 __u32 unused1,unused2; 119 unsigned char im_msgtype; /* What is this */ 120 unsigned char im_mbz; /* Must be zero */ 121 unsigned char im_vif; /* Interface (this ought to be a vifi_t!) */ 122 unsigned char unused3; 123 struct in_addr im_src,im_dst; 124 }; 125 126 /* 127 * That's all usermode folks 128 */ 129 130 131 132 #define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */ 133 134 /* 135 * Pseudo messages used by mrouted 136 */ 137 138 #define IGMPMSG_NOCACHE 1 /* Kern cache fill request to mrouted */ 139 #define IGMPMSG_WRONGVIF 2 /* For PIM assert processing (unused) */ 140 #define IGMPMSG_WHOLEPKT 3 /* For PIM Register processing */ 141 142 143 #endif 144
