660b26dc1a
This patch add the support of proxy multicast, ie being able to build a static multicast tree. It adds the support of (*,*) and (*,G) entries. The user should define an (*,*) entry which is not used for real forwarding. This entry defines the upstream in iif and contains all interfaces from the static tree in its oifs. It will be used to forward packet upstream when they come from an interface belonging to the static tree. Hence, the user should define (*,G) entries to build its static tree. Note that upstream interface must be part of oifs: packets are sent to all oifs interfaces except the input interface. This ensures to always join the whole static tree, even if the packet is not coming from the upstream interface. Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Acked-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
141 lines
4.2 KiB
C
141 lines
4.2 KiB
C
#ifndef _UAPI__LINUX_MROUTE6_H
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#define _UAPI__LINUX_MROUTE6_H
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#include <linux/types.h>
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#include <linux/sockios.h>
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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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#if !defined(__KERNEL__)
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#if !defined(DIV_ROUND_UP)
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#define DIV_ROUND_UP(x,y) (((x) + ((y) - 1)) / (y))
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#endif
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#endif
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typedef struct if_set {
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if_mask ifs_bits[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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#endif /* _UAPI__LINUX_MROUTE6_H */
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