Add MLDv2 protocol header, but do not connect it to the build.

2009-04-29 11:31:23 +00:00 · 2009-04-29 11:31:23 +00:00 · 0279cfbe91
commit 0279cfbe91
parent 8f002c6ce7
1 changed files with 112 additions and 0 deletions
--- a/sys/netinet6/mld6.h
+++ b/sys/netinet6/mld6.h
@ -0,0 +1,112 @@
+/*-
+ * Copyright (c) 2009 Bruce Simpson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _NETINET6_MLD6_H_
+#define _NETINET6_MLD6_H_
+
+/*
+ * Multicast Listener Discovery (MLD) definitions.
+ */
+
+/* Minimum length of any MLD protocol message. */
+#define MLD_MINLEN	sizeof(struct icmp6_hdr)
+
+/*
+ * MLD v2 query format.
+ * See <netinet/icmp6.h> for struct mld_hdr
+ * (MLDv1 query and host report format).
+ */
+struct mldv2_query {
+	struct icmp6_hdr	mld_icmp6_hdr;	/* ICMPv6 header */
+	struct in6_addr		mld_addr;	/* address being queried */
+	uint8_t		mld_misc;	/* reserved/suppress/robustness   */
+	uint8_t		mld_qqi;	/* querier's query interval       */
+	uint16_t	mld_numsrc;	/* number of sources              */
+	/* followed by 1..numsrc source addresses */
+} __packed;
+#define MLD_V2_QUERY_MINLEN		sizeof(struct mldv2_query)
+#define MLD_MRC_EXP(x)			((ntohs((x)) >> 12) & 0x0007)
+#define MLD_MRC_MANT(x)			(ntohs((x)) & 0x0fff)
+#define MLD_QQIC_EXP(x)			(((x) >> 4) & 0x07)
+#define MLD_QQIC_MANT(x)		((x) & 0x0f)
+#define MLD_QRESV(x)			(((x) >> 4) & 0x0f)
+#define MLD_SFLAG(x)			(((x) >> 3) & 0x01)
+#define MLD_QRV(x)			((x) & 0x07)
+
+/*
+ * MLDv2 host membership report header.
+ * mld_type: MLDV2_LISTENER_REPORT
+ */
+struct mldv2_report {
+	struct icmp6_hdr	mld_icmp6_hdr;
+	/* followed by 1..numgrps records */
+} __packed;
+/* overlaid on struct icmp6_hdr. */
+#define mld_numrecs	mld_icmp6_hdr.icmp6_data16[1]
+
+struct mldv2_record {
+	uint8_t			mr_type;	/* record type */
+	uint8_t			mr_datalen;	/* length of auxiliary data */
+	uint16_t		mr_numsrc;	/* number of sources */
+	struct in6_addr		mr_addr;	/* address being reported */
+	/* followed by 1..numsrc source addresses */
+} __packed;
+#define MLD_V2_REPORT_MAXRECS		65535
+
+/*
+ * MLDv2 report modes.
+ */
+#define MLD_DO_NOTHING			0	/* don't send a record */
+#define MLD_MODE_IS_INCLUDE		1	/* MODE_IN */
+#define MLD_MODE_IS_EXCLUDE		2	/* MODE_EX */
+#define MLD_CHANGE_TO_INCLUDE_MODE	3	/* TO_IN */
+#define MLD_CHANGE_TO_EXCLUDE_MODE	4	/* TO_EX */
+#define MLD_ALLOW_NEW_SOURCES		5	/* ALLOW_NEW */
+#define MLD_BLOCK_OLD_SOURCES		6	/* BLOCK_OLD */
+
+/*
+ * MLDv2 query types.
+ */
+#define MLD_V2_GENERAL_QUERY		1
+#define MLD_V2_GROUP_QUERY		2
+#define MLD_V2_GROUP_SOURCE_QUERY	3
+
+/*
+ * Maximum report interval for MLDv1 host membership reports.
+ */
+#define MLD_V1_MAX_RI			10
+
+/*
+ * MLD_TIMER_SCALE denotes that the MLD code field specifies
+ * time in milliseconds.
+ */
+#define MLD_TIMER_SCALE			1000
+
+#endif /* _NETINET6_MLD6_H_ */