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mroute.h
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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ #ifndef __LINUX_MROUTE_H #define __LINUX_MROUTE_H #include <linux/sockios.h> #include <linux/types.h> #include <linux/in.h> /* For struct in_addr. */ /* Based on the MROUTING 3.5 defines primarily to keep * source compatibility with BSD. * * See the mrouted code for the original history. * * Protocol Independent Multicast (PIM) data structures included * Carlos Picoto (cap@di.fc.ul.pt) */ #define MRT_BASE 200 #define MRT_INIT (MRT_BASE) /* Activate the kernel mroute code */ #define MRT_DONE (MRT_BASE+1) /* Shutdown the kernel mroute */ #define MRT_ADD_VIF (MRT_BASE+2) /* Add a virtual interface */ #define MRT_DEL_VIF (MRT_BASE+3) /* Delete a virtual interface */ #define MRT_ADD_MFC (MRT_BASE+4) /* Add a multicast forwarding entry */ #define MRT_DEL_MFC (MRT_BASE+5) /* Delete a multicast forwarding entry */ #define MRT_VERSION (MRT_BASE+6) /* Get the kernel multicast version */ #define MRT_ASSERT (MRT_BASE+7) /* Activate PIM assert mode */ #define MRT_PIM (MRT_BASE+8) /* enable PIM code */ #define MRT_TABLE (MRT_BASE+9) /* Specify mroute table ID */ #define MRT_ADD_MFC_PROXY (MRT_BASE+10) /* Add a (*,*|G) mfc entry */ #define MRT_DEL_MFC_PROXY (MRT_BASE+11) /* Del a (*,*|G) mfc entry */ #define MRT_MAX (MRT_BASE+11) #define SIOCGETVIFCNT SIOCPROTOPRIVATE /* IP protocol privates */ #define SIOCGETSGCNT (SIOCPROTOPRIVATE+1) #define SIOCGETRPF (SIOCPROTOPRIVATE+2) #define MAXVIFS 32 typedef unsigned long vifbitmap_t; /* User mode code depends on this lot */ typedef unsigned short vifi_t; #define ALL_VIFS ((vifi_t)(-1)) /* Same idea as select */ #define VIFM_SET(n,m) ((m)|=(1<<(n))) #define VIFM_CLR(n,m) ((m)&=~(1<<(n))) #define VIFM_ISSET(n,m) ((m)&(1<<(n))) #define VIFM_CLRALL(m) ((m)=0) #define VIFM_COPY(mfrom,mto) ((mto)=(mfrom)) #define VIFM_SAME(m1,m2) ((m1)==(m2)) /* Passed by mrouted for an MRT_ADD_VIF - again we use the * mrouted 3.6 structures for compatibility */ struct vifctl { vifi_t vifc_vifi; /* Index of VIF */ unsigned char vifc_flags; /* VIFF_ flags */ unsigned char vifc_threshold; /* ttl limit */ unsigned int vifc_rate_limit; /* Rate limiter values (NI) */ union { struct in_addr vifc_lcl_addr; /* Local interface address */ int vifc_lcl_ifindex; /* Local interface index */ }; struct in_addr vifc_rmt_addr; /* IPIP tunnel addr */ }; #define VIFF_TUNNEL 0x1 /* IPIP tunnel */ #define VIFF_SRCRT 0x2 /* NI */ #define VIFF_REGISTER 0x4 /* register vif */ #define VIFF_USE_IFINDEX 0x8 /* use vifc_lcl_ifindex instead of vifc_lcl_addr to find an interface */ /* Cache manipulation structures for mrouted and PIMd */ struct mfcctl { struct in_addr mfcc_origin; /* Origin of mcast */ struct in_addr mfcc_mcastgrp; /* Group in question */ vifi_t mfcc_parent; /* Where it arrived */ unsigned char mfcc_ttls[MAXVIFS]; /* Where it is going */ unsigned int mfcc_pkt_cnt; /* pkt count for src-grp */ unsigned int mfcc_byte_cnt; unsigned int mfcc_wrong_if; int mfcc_expire; }; /* Group count retrieval for mrouted */ struct sioc_sg_req { struct in_addr src; struct in_addr grp; unsigned long pktcnt; unsigned long bytecnt; unsigned long wrong_if; }; /* To get vif packet counts */ struct sioc_vif_req { vifi_t vifi; /* Which iface */ unsigned long icount; /* In packets */ unsigned long ocount; /* Out packets */ unsigned long ibytes; /* In bytes */ unsigned long obytes; /* Out bytes */ }; /* This is the format the mroute daemon expects to see IGMP control * data. Magically happens to be like an IP packet as per the original */ struct igmpmsg { __u32 unused1,unused2; unsigned char im_msgtype; /* What is this */ unsigned char im_mbz; /* Must be zero */ unsigned char im_vif; /* Interface (this ought to be a vifi_t!) */ unsigned char unused3; struct in_addr im_src,im_dst; }; /* ipmr netlink table attributes */ enum { IPMRA_TABLE_UNSPEC, IPMRA_TABLE_ID, IPMRA_TABLE_CACHE_RES_QUEUE_LEN, IPMRA_TABLE_MROUTE_REG_VIF_NUM, IPMRA_TABLE_MROUTE_DO_ASSERT, IPMRA_TABLE_MROUTE_DO_PIM, IPMRA_TABLE_VIFS, __IPMRA_TABLE_MAX }; #define IPMRA_TABLE_MAX (__IPMRA_TABLE_MAX - 1) /* ipmr netlink vif attribute format * [ IPMRA_TABLE_VIFS ] - nested attribute * [ IPMRA_VIF ] - nested attribute * [ IPMRA_VIFA_xxx ] */ enum { IPMRA_VIF_UNSPEC, IPMRA_VIF, __IPMRA_VIF_MAX }; #define IPMRA_VIF_MAX (__IPMRA_VIF_MAX - 1) /* vif-specific attributes */ enum { IPMRA_VIFA_UNSPEC, IPMRA_VIFA_IFINDEX, IPMRA_VIFA_VIF_ID, IPMRA_VIFA_FLAGS, IPMRA_VIFA_BYTES_IN, IPMRA_VIFA_BYTES_OUT, IPMRA_VIFA_PACKETS_IN, IPMRA_VIFA_PACKETS_OUT, IPMRA_VIFA_LOCAL_ADDR, IPMRA_VIFA_REMOTE_ADDR, IPMRA_VIFA_PAD, __IPMRA_VIFA_MAX }; #define IPMRA_VIFA_MAX (__IPMRA_VIFA_MAX - 1) /* ipmr netlink cache report attributes */ enum { IPMRA_CREPORT_UNSPEC, IPMRA_CREPORT_MSGTYPE, IPMRA_CREPORT_VIF_ID, IPMRA_CREPORT_SRC_ADDR, IPMRA_CREPORT_DST_ADDR, IPMRA_CREPORT_PKT, __IPMRA_CREPORT_MAX }; #define IPMRA_CREPORT_MAX (__IPMRA_CREPORT_MAX - 1) /* That's all usermode folks */ #define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */ /* Pseudo messages used by mrouted */ #define IGMPMSG_NOCACHE 1 /* Kern cache fill request to mrouted */ #define IGMPMSG_WRONGVIF 2 /* For PIM assert processing (unused) */ #define IGMPMSG_WHOLEPKT 3 /* For PIM Register processing */ #endif /* __LINUX_MROUTE_H */