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

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#ifndef __LINUX_MROUTE6_H

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#define __LINUX_MROUTE6_H

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#include <linux/kernel.h>

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#include <linux/types.h>

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#include <linux/sockios.h>

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#include <linux/in6.h> /* For struct sockaddr_in6. */

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/*

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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 pim6sd 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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*/

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#define MRT6_BASE 200

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#define MRT6_INIT (MRT6_BASE) /* Activate the kernel mroute code */

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#define MRT6_DONE (MRT6_BASE+1) /* Shutdown the kernel mroute */

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#define MRT6_ADD_MIF (MRT6_BASE+2) /* Add a virtual interface */

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#define MRT6_DEL_MIF (MRT6_BASE+3) /* Delete a virtual interface */

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#define MRT6_ADD_MFC (MRT6_BASE+4) /* Add a multicast forwarding entry */

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#define MRT6_DEL_MFC (MRT6_BASE+5) /* Delete a multicast forwarding entry */

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#define MRT6_VERSION (MRT6_BASE+6) /* Get the kernel multicast version */

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#define MRT6_ASSERT (MRT6_BASE+7) /* Activate PIM assert mode */

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#define MRT6_PIM (MRT6_BASE+8) /* enable PIM code */

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#define MRT6_TABLE (MRT6_BASE+9) /* Specify mroute table ID */

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#define MRT6_ADD_MFC_PROXY (MRT6_BASE+10) /* Add a (*,*|G) mfc entry */

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#define MRT6_DEL_MFC_PROXY (MRT6_BASE+11) /* Del a (*,*|G) mfc entry */

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#define MRT6_MAX (MRT6_BASE+11)

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#define SIOCGETMIFCNT_IN6 SIOCPROTOPRIVATE /* IP protocol privates */

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#define SIOCGETSGCNT_IN6 (SIOCPROTOPRIVATE+1)

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#define SIOCGETRPF (SIOCPROTOPRIVATE+2)

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#define MAXMIFS 32

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

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typedef unsigned short mifi_t;

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#define ALL_MIFS ((mifi_t)(-1))

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#ifndef IF_SETSIZE

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#define IF_SETSIZE 256

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#endif

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typedef __u32 if_mask;

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#define NIFBITS (sizeof(if_mask) * 8) /* bits per mask */

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typedef struct if_set {

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if_mask ifs_bits[__KERNEL_DIV_ROUND_UP(IF_SETSIZE, NIFBITS)];

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} if_set;

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#define IF_SET(n, p) ((p)->ifs_bits[(n)/NIFBITS] |= (1 << ((n) % NIFBITS)))

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#define IF_CLR(n, p) ((p)->ifs_bits[(n)/NIFBITS] &= ~(1 << ((n) % NIFBITS)))

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#define IF_ISSET(n, p) ((p)->ifs_bits[(n)/NIFBITS] & (1 << ((n) % NIFBITS)))

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#define IF_COPY(f, t) bcopy(f, t, sizeof(*(f)))

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#define IF_ZERO(p) bzero(p, sizeof(*(p)))

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/*

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* Passed by mrouted for an MRT_ADD_MIF - again we use the

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* mrouted 3.6 structures for compatibility

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*/

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struct mif6ctl {

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mifi_t mif6c_mifi; /* Index of MIF */

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unsigned char mif6c_flags; /* MIFF_ flags */

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unsigned char vifc_threshold; /* ttl limit */

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__u16 mif6c_pifi; /* the index of the physical IF */

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

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};

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#define MIFF_REGISTER 0x1 /* register vif */

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/*

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* Cache manipulation structures for mrouted and PIMd

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*/

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struct mf6cctl {

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struct sockaddr_in6 mf6cc_origin; /* Origin of mcast */

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struct sockaddr_in6 mf6cc_mcastgrp; /* Group in question */

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mifi_t mf6cc_parent; /* Where it arrived */

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struct if_set mf6cc_ifset; /* Where it is going */

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};

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/*

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* Group count retrieval for pim6sd

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*/

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struct sioc_sg_req6 {

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struct sockaddr_in6 src;

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struct sockaddr_in6 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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/*

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* To get vif packet counts

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*/

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struct sioc_mif_req6 {

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mifi_t mifi; /* 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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/*

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* That's all usermode folks

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*/

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/*

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* Structure used to communicate from kernel to multicast router.

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* We'll overlay the structure onto an MLD header (not an IPv6 heder like igmpmsg{}

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* used for IPv4 implementation). This is because this structure will be passed via an

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* IPv6 raw socket, on which an application will only receiver the payload i.e the data after

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* the IPv6 header and all the extension headers. (See section 3 of RFC 3542)

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*/

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struct mrt6msg {

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#define MRT6MSG_NOCACHE 1

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#define MRT6MSG_WRONGMIF 2

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#define MRT6MSG_WHOLEPKT 3 /* used for use level encap */

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__u8 im6_mbz; /* must be zero */

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__u8 im6_msgtype; /* what type of message */

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__u16 im6_mif; /* mif rec'd on */

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__u32 im6_pad; /* padding for 64 bit arch */

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struct in6_addr im6_src, im6_dst;

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};

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/* ip6mr netlink cache report attributes */

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enum {

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IP6MRA_CREPORT_UNSPEC,

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IP6MRA_CREPORT_MSGTYPE,

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IP6MRA_CREPORT_MIF_ID,

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IP6MRA_CREPORT_SRC_ADDR,

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IP6MRA_CREPORT_DST_ADDR,

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IP6MRA_CREPORT_PKT,

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__IP6MRA_CREPORT_MAX

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};

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#define IP6MRA_CREPORT_MAX (__IP6MRA_CREPORT_MAX - 1)

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#endif /* __LINUX_MROUTE6_H */

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