pim6d: Mroute changes

Mroute and supporting changes

Signed-off-by: plsaranya <Saranya_Panjarathina@dell.com>

3 files changed, 358 insertions, 0 deletions

diff --git a/include/linux/mroute.h b/include/linux/mroute.h
new file mode 100644
index 000000000..a0bfdcb53
--- /dev/null
+++ b/include/linux/mroute.h
@@ -0,0 +1,193 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _UAPI__LINUX_MROUTE_H
+#define _UAPI__LINUX_MROUTE_H
+
+#ifdef __LINUX__
+#include <linux/sockios.h>
+#include <linux/types.h>
+#endif
+#include <netinet/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_FLUSH	(MRT_BASE+12)	/* Flush all mfc entries and/or vifs	*/
+#define MRT_MAX		(MRT_BASE+12)
+
+#ifndef SIOCGETVIFCNT
+#define SIOCGETVIFCNT	SIOCPROTOPRIVATE	/* IP protocol privates */
+#define SIOCGETSGCNT	(SIOCPROTOPRIVATE+1)
+#define SIOCGETRPF	(SIOCPROTOPRIVATE+2)
+#endif
+
+#ifndef MAXVIFS
+#define MAXVIFS 32
+#endif
+/* MRT_FLUSH optional flags */
+#define MRT_FLUSH_MFC	1	/* Flush multicast entries */
+#define MRT_FLUSH_MFC_STATIC	2	/* Flush static multicast entries */
+#define MRT_FLUSH_VIFS	4	/* Flush multicast vifs */
+#define MRT_FLUSH_VIFS_STATIC	8	/* Flush static multicast vifs */
+
+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 {
+	uint32_t unused1,unused2;
+	unsigned char im_msgtype;		/* What is this */
+	unsigned char im_mbz;			/* Must be zero */
+	unsigned char im_vif;			/* Low 8 bits of Interface */
+	unsigned char im_vif_hi;		/* High 8 bits of Interface */
+	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_MROUTE_DO_WRVIFWHOLE,
+	__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_TABLE,
+	__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 */
+#define IGMPMSG_WRVIFWHOLE	4		/* For PIM Register and assert processing */
+
+#endif /* _UAPI__LINUX_MROUTE_H */
diff --git a/include/linux/mroute6.h b/include/linux/mroute6.h
new file mode 100644
index 000000000..1fb90ec02
--- /dev/null
+++ b/include/linux/mroute6.h
@@ -0,0 +1,163 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _UAPI__LINUX_MROUTE6_H
+#define _UAPI__LINUX_MROUTE6_H
+
+#ifdef __LINUX__
+#include <linux/const.h>
+#include <linux/types.h>
+#include <linux/sockios.h>
+#endif
+#include <netinet/in.h>		/* For struct sockaddr_in6. */
+
+/*
+ *	Based on the MROUTING 3.5 defines primarily to keep
+ *	source compatibility with BSD.
+ *
+ *	See the pim6sd code for the original history.
+ *
+ *      Protocol Independent Multicast (PIM) data structures included
+ *      Carlos Picoto (cap@di.fc.ul.pt)
+ *
+ */
+
+#define MRT6_BASE	200
+#define MRT6_INIT	(MRT6_BASE)	/* Activate the kernel mroute code 	*/
+#define MRT6_DONE	(MRT6_BASE+1)	/* Shutdown the kernel mroute		*/
+#define MRT6_ADD_MIF	(MRT6_BASE+2)	/* Add a virtual interface		*/
+#define MRT6_DEL_MIF	(MRT6_BASE+3)	/* Delete a virtual interface		*/
+#define MRT6_ADD_MFC	(MRT6_BASE+4)	/* Add a multicast forwarding entry	*/
+#define MRT6_DEL_MFC	(MRT6_BASE+5)	/* Delete a multicast forwarding entry	*/
+#define MRT6_VERSION	(MRT6_BASE+6)	/* Get the kernel multicast version	*/
+#define MRT6_ASSERT	(MRT6_BASE+7)	/* Activate PIM assert mode		*/
+#define MRT6_PIM	(MRT6_BASE+8)	/* enable PIM code			*/
+#define MRT6_TABLE	(MRT6_BASE+9)	/* Specify mroute table ID		*/
+#define MRT6_ADD_MFC_PROXY	(MRT6_BASE+10)	/* Add a (*,*|G) mfc entry	*/
+#define MRT6_DEL_MFC_PROXY	(MRT6_BASE+11)	/* Del a (*,*|G) mfc entry	*/
+#define MRT6_FLUSH	(MRT6_BASE+12)	/* Flush all mfc entries and/or vifs	*/
+#define MRT6_MAX	(MRT6_BASE+12)
+
+#ifndef SIOCGETMIFCNT_IN6
+#define SIOCGETMIFCNT_IN6	SIOCPROTOPRIVATE	/* IP protocol privates */
+#define SIOCGETSGCNT_IN6	(SIOCPROTOPRIVATE+1)
+#define SIOCGETRPF	(SIOCPROTOPRIVATE+2)
+#endif
+
+#ifndef MAXMIFS
+#define MAXMIFS 32
+#endif
+/* MRT6_FLUSH optional flags */
+#define MRT6_FLUSH_MFC	1	/* Flush multicast entries */
+#define MRT6_FLUSH_MFC_STATIC	2	/* Flush static multicast entries */
+#define MRT6_FLUSH_MIFS	4	/* Flushing multicast vifs */
+#define MRT6_FLUSH_MIFS_STATIC	8	/* Flush static multicast vifs */
+
+typedef unsigned long mifbitmap_t;	/* User mode code depends on this lot */
+typedef unsigned short mifi_t;
+#define ALL_MIFS	((mifi_t)(-1))
+
+#ifndef IF_SETSIZE
+#define IF_SETSIZE	256
+#endif
+
+typedef	uint32_t	if_mask;
+#define NIFBITS (sizeof(if_mask) * 8)        /* bits per mask */
+
+typedef struct if_set {
+	if_mask ifs_bits[__KERNEL_DIV_ROUND_UP(IF_SETSIZE, NIFBITS)];
+} if_set;
+
+#define IF_SET(n, p)    ((p)->ifs_bits[(n)/NIFBITS] |= (1 << ((n) % NIFBITS)))
+#define IF_CLR(n, p)    ((p)->ifs_bits[(n)/NIFBITS] &= ~(1 << ((n) % NIFBITS)))
+#define IF_ISSET(n, p)  ((p)->ifs_bits[(n)/NIFBITS] & (1 << ((n) % NIFBITS)))
+#define IF_COPY(f, t)   bcopy(f, t, sizeof(*(f)))
+#define IF_ZERO(p)      bzero(p, sizeof(*(p)))
+
+/*
+ *	Passed by mrouted for an MRT_ADD_MIF - again we use the
+ *	mrouted 3.6 structures for compatibility
+ */
+
+struct mif6ctl {
+	mifi_t	mif6c_mifi;		/* Index of MIF */
+	unsigned char mif6c_flags;	/* MIFF_ flags */
+	unsigned char vifc_threshold;	/* ttl limit */
+	__u16	 mif6c_pifi;		/* the index of the physical IF */
+	unsigned int vifc_rate_limit;	/* Rate limiter values (NI) */
+};
+
+#define MIFF_REGISTER	0x1	/* register vif	*/
+
+/*
+ *	Cache manipulation structures for mrouted and PIMd
+ */
+
+struct mf6cctl {
+	struct sockaddr_in6 mf6cc_origin;		/* Origin of mcast	*/
+	struct sockaddr_in6 mf6cc_mcastgrp;		/* Group in question	*/
+	mifi_t	mf6cc_parent;			/* Where it arrived	*/
+	struct if_set mf6cc_ifset;		/* Where it is going */
+};
+
+/*
+ *	Group count retrieval for pim6sd
+ */
+
+struct sioc_sg_req6 {
+	struct sockaddr_in6 src;
+	struct sockaddr_in6 grp;
+	unsigned long pktcnt;
+	unsigned long bytecnt;
+	unsigned long wrong_if;
+};
+
+/*
+ *	To get vif packet counts
+ */
+
+struct sioc_mif_req6 {
+	mifi_t	mifi;		/* Which iface */
+	unsigned long icount;	/* In packets */
+	unsigned long ocount;	/* Out packets */
+	unsigned long ibytes;	/* In bytes */
+	unsigned long obytes;	/* Out bytes */
+};
+
+/*
+ *	That's all usermode folks
+ */
+
+
+
+/*
+ * Structure used to communicate from kernel to multicast router.
+ * We'll overlay the structure onto an MLD header (not an IPv6 heder like igmpmsg{}
+ * used for IPv4 implementation). This is because this structure will be passed via an
+ * IPv6 raw socket, on which an application will only receiver the payload i.e the data after
+ * the IPv6 header and all the extension headers. (See section 3 of RFC 3542)
+ */
+
+struct mrt6msg {
+#define MRT6MSG_NOCACHE		1
+#define MRT6MSG_WRONGMIF	2
+#define MRT6MSG_WHOLEPKT	3		/* used for use level encap */
+#define MRT6MSG_WRMIFWHOLE	4		/* For PIM Register and assert processing */
+	__u8		im6_mbz;		/* must be zero		   */
+	__u8		im6_msgtype;		/* what type of message    */
+	__u16		im6_mif;		/* mif rec'd on		   */
+	__u32		im6_pad;		/* padding for 64 bit arch */
+	struct in6_addr	im6_src, im6_dst;
+};
+
+/* ip6mr netlink cache report attributes */
+enum {
+	IP6MRA_CREPORT_UNSPEC,
+	IP6MRA_CREPORT_MSGTYPE,
+	IP6MRA_CREPORT_MIF_ID,
+	IP6MRA_CREPORT_SRC_ADDR,
+	IP6MRA_CREPORT_DST_ADDR,
+	IP6MRA_CREPORT_PKT,
+	__IP6MRA_CREPORT_MAX
+};
+#define IP6MRA_CREPORT_MAX (__IP6MRA_CREPORT_MAX - 1)
+
+#endif /* _UAPI__LINUX_MROUTE6_H */
diff --git a/include/subdir.am b/include/subdir.am
index a06a8e564..f6328ef38 100644
--- a/include/subdir.am
+++ b/include/subdir.am
@@ -17,4 +17,6 @@ noinst_HEADERS += \
 	include/linux/seg6_hmac.h \
 	include/linux/seg6_iptunnel.h \
 	include/linux/seg6_local.h \
+	include/linux/mroute.h \
+	include/linux/mroute6.h \
 	# end