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>
147 lines
4.1 KiB
C
147 lines
4.1 KiB
C
#ifndef _UAPI__LINUX_MROUTE_H
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#define _UAPI__LINUX_MROUTE_H
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#include <linux/sockios.h>
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#include <linux/types.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 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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*/
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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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/*
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* Same idea as select
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*/
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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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/*
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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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/*
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* Cache manipulation structures for mrouted and PIMd
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*/
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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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/*
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* Group count retrieval for mrouted
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*/
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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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/*
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* To get vif packet counts
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*/
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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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/*
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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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/*
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* That's all usermode folks
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*/
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#define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */
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/*
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* Pseudo messages used by mrouted
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*/
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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 /* _UAPI__LINUX_MROUTE_H */
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