/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */

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#ifndef __LINUX_MROUTE_H

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#define __LINUX_MROUTE_H

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#include <linux/sockios.h>

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#include <linux/types.h>

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#include <linux/in.h> /* For struct in_addr. */

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/* Based on the MROUTING 3.5 defines primarily to keep

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* source compatibility with BSD.

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*

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* See the mrouted code for the original history.

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*

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* Protocol Independent Multicast (PIM) data structures included

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* Carlos Picoto (cap@di.fc.ul.pt)

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*/

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#define MRT_BASE 200

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#define MRT_INIT (MRT_BASE) /* Activate the kernel mroute code */

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#define MRT_DONE (MRT_BASE+1) /* Shutdown the kernel mroute */

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#define MRT_ADD_VIF (MRT_BASE+2) /* Add a virtual interface */

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#define MRT_DEL_VIF (MRT_BASE+3) /* Delete a virtual interface */

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#define MRT_ADD_MFC (MRT_BASE+4) /* Add a multicast forwarding entry */

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#define MRT_DEL_MFC (MRT_BASE+5) /* Delete a multicast forwarding entry */

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#define MRT_VERSION (MRT_BASE+6) /* Get the kernel multicast version */

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#define MRT_ASSERT (MRT_BASE+7) /* Activate PIM assert mode */

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#define MRT_PIM (MRT_BASE+8) /* enable PIM code */

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#define MRT_TABLE (MRT_BASE+9) /* Specify mroute table ID */

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#define MRT_ADD_MFC_PROXY (MRT_BASE+10) /* Add a (*,*|G) mfc entry */

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#define MRT_DEL_MFC_PROXY (MRT_BASE+11) /* Del a (*,*|G) mfc entry */

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#define MRT_MAX (MRT_BASE+11)

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#define SIOCGETVIFCNT SIOCPROTOPRIVATE /* IP protocol privates */

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#define SIOCGETSGCNT (SIOCPROTOPRIVATE+1)

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#define SIOCGETRPF (SIOCPROTOPRIVATE+2)

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#define MAXVIFS 32

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typedef unsigned long vifbitmap_t; /* User mode code depends on this lot */

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typedef unsigned short vifi_t;

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#define ALL_VIFS ((vifi_t)(-1))

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/* Same idea as select */

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#define VIFM_SET(n,m) ((m)|=(1<<(n)))

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#define VIFM_CLR(n,m) ((m)&=~(1<<(n)))

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#define VIFM_ISSET(n,m) ((m)&(1<<(n)))

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#define VIFM_CLRALL(m) ((m)=0)

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#define VIFM_COPY(mfrom,mto) ((mto)=(mfrom))

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#define VIFM_SAME(m1,m2) ((m1)==(m2))

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/* Passed by mrouted for an MRT_ADD_VIF - again we use the

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* mrouted 3.6 structures for compatibility

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*/

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struct vifctl {

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vifi_t vifc_vifi; /* Index of VIF */

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unsigned char vifc_flags; /* VIFF_ flags */

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unsigned char vifc_threshold; /* ttl limit */

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unsigned int vifc_rate_limit; /* Rate limiter values (NI) */

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union {

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struct in_addr vifc_lcl_addr; /* Local interface address */

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int vifc_lcl_ifindex; /* Local interface index */

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};

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struct in_addr vifc_rmt_addr; /* IPIP tunnel addr */

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};

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#define VIFF_TUNNEL 0x1 /* IPIP tunnel */

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#define VIFF_SRCRT 0x2 /* NI */

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#define VIFF_REGISTER 0x4 /* register vif */

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#define VIFF_USE_IFINDEX 0x8 /* use vifc_lcl_ifindex instead of

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vifc_lcl_addr to find an interface */

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/* Cache manipulation structures for mrouted and PIMd */

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struct mfcctl {

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struct in_addr mfcc_origin; /* Origin of mcast */

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struct in_addr mfcc_mcastgrp; /* Group in question */

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vifi_t mfcc_parent; /* Where it arrived */

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unsigned char mfcc_ttls[MAXVIFS]; /* Where it is going */

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unsigned int mfcc_pkt_cnt; /* pkt count for src-grp */

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unsigned int mfcc_byte_cnt;

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unsigned int mfcc_wrong_if;

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int mfcc_expire;

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};

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/* Group count retrieval for mrouted */

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struct sioc_sg_req {

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struct in_addr src;

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struct in_addr grp;

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unsigned long pktcnt;

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unsigned long bytecnt;

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unsigned long wrong_if;

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};

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/* To get vif packet counts */

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struct sioc_vif_req {

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vifi_t vifi; /* Which iface */

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unsigned long icount; /* In packets */

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unsigned long ocount; /* Out packets */

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unsigned long ibytes; /* In bytes */

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unsigned long obytes; /* Out bytes */

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};

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/* This is the format the mroute daemon expects to see IGMP control

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* data. Magically happens to be like an IP packet as per the original

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*/

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struct igmpmsg {

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__u32 unused1,unused2;

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unsigned char im_msgtype; /* What is this */

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unsigned char im_mbz; /* Must be zero */

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unsigned char im_vif; /* Interface (this ought to be a vifi_t!) */

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unsigned char unused3;

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struct in_addr im_src,im_dst;

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};

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/* ipmr netlink table attributes */

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enum {

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IPMRA_TABLE_UNSPEC,

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IPMRA_TABLE_ID,

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IPMRA_TABLE_CACHE_RES_QUEUE_LEN,

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IPMRA_TABLE_MROUTE_REG_VIF_NUM,

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IPMRA_TABLE_MROUTE_DO_ASSERT,

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IPMRA_TABLE_MROUTE_DO_PIM,

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IPMRA_TABLE_VIFS,

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__IPMRA_TABLE_MAX

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};

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#define IPMRA_TABLE_MAX (__IPMRA_TABLE_MAX - 1)

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/* ipmr netlink vif attribute format

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* [ IPMRA_TABLE_VIFS ] - nested attribute

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* [ IPMRA_VIF ] - nested attribute

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* [ IPMRA_VIFA_xxx ]

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*/

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enum {

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IPMRA_VIF_UNSPEC,

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IPMRA_VIF,

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__IPMRA_VIF_MAX

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};

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#define IPMRA_VIF_MAX (__IPMRA_VIF_MAX - 1)

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/* vif-specific attributes */

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enum {

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IPMRA_VIFA_UNSPEC,

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IPMRA_VIFA_IFINDEX,

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IPMRA_VIFA_VIF_ID,

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IPMRA_VIFA_FLAGS,

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IPMRA_VIFA_BYTES_IN,

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IPMRA_VIFA_BYTES_OUT,

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IPMRA_VIFA_PACKETS_IN,

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IPMRA_VIFA_PACKETS_OUT,

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IPMRA_VIFA_LOCAL_ADDR,

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IPMRA_VIFA_REMOTE_ADDR,

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IPMRA_VIFA_PAD,

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__IPMRA_VIFA_MAX

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};

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#define IPMRA_VIFA_MAX (__IPMRA_VIFA_MAX - 1)

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/* ipmr netlink cache report attributes */

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enum {

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IPMRA_CREPORT_UNSPEC,

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IPMRA_CREPORT_MSGTYPE,

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IPMRA_CREPORT_VIF_ID,

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IPMRA_CREPORT_SRC_ADDR,

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IPMRA_CREPORT_DST_ADDR,

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IPMRA_CREPORT_PKT,

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__IPMRA_CREPORT_MAX

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};

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#define IPMRA_CREPORT_MAX (__IPMRA_CREPORT_MAX - 1)

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/* That's all usermode folks */

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#define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */

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/* Pseudo messages used by mrouted */

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#define IGMPMSG_NOCACHE 1 /* Kern cache fill request to mrouted */

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#define IGMPMSG_WRONGVIF 2 /* For PIM assert processing (unused) */

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#define IGMPMSG_WHOLEPKT 3 /* For PIM Register processing */

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#endif /* __LINUX_MROUTE_H */

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