/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2010 Apple Computer, Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#define _NETINET_IGMP_VAR_H_
#include <sys/appleapiopts.h>
-
/*
* Internet Group Management Protocol (IGMP),
* implementation-specific definitions.
* MULTICAST Revision: 3.5.1.3
*/
+struct igmpstat_v3 {
+ /*
+ * Structure header (to insulate ABI changes).
+ */
+ uint32_t igps_version; /* version of this structure */
+ uint32_t igps_len; /* length of this structure */
+ /*
+ * Message statistics.
+ */
+ uint64_t igps_rcv_total; /* total IGMP messages received */
+ uint64_t igps_rcv_tooshort; /* received with too few bytes */
+ uint64_t igps_rcv_badttl; /* received with ttl other than 1 */
+ uint64_t igps_rcv_badsum; /* received with bad checksum */
+ /*
+ * Query statistics.
+ */
+ uint64_t igps_rcv_v1v2_queries; /* received IGMPv1/IGMPv2 queries */
+ uint64_t igps_rcv_v3_queries; /* received IGMPv3 queries */
+ uint64_t igps_rcv_badqueries; /* received invalid queries */
+ uint64_t igps_rcv_gen_queries; /* received general queries */
+ uint64_t igps_rcv_group_queries;/* received group queries */
+ uint64_t igps_rcv_gsr_queries; /* received group-source queries */
+ uint64_t igps_drop_gsr_queries; /* dropped group-source queries */
+ /*
+ * Report statistics.
+ */
+ uint64_t igps_rcv_reports; /* received membership reports */
+ uint64_t igps_rcv_badreports; /* received invalid reports */
+ uint64_t igps_rcv_ourreports; /* received reports for our groups */
+ uint64_t igps_rcv_nora; /* received w/o Router Alert option */
+ uint64_t igps_snd_reports; /* sent membership reports */
+ /*
+ * Padding for future additions.
+ */
+ uint64_t __igps_pad[4];
+} __attribute__((aligned(8)));
+
+/*
+ * Old IGMPv2 stat structure for backward compatibility
+ *
+ */
+
struct igmpstat {
u_int igps_rcv_total; /* total IGMP messages received */
u_int igps_rcv_tooshort; /* received with too few bytes */
u_int igps_snd_reports; /* sent membership reports */
};
-#ifdef KERNEL_PRIVATE
-#ifdef KERNEL
+#define IGPS_VERSION_3 3
+#define IGPS_VERSION3_LEN 168
+
+#ifdef PRIVATE
+/*
+ * Per-interface IGMP router version information.
+ */
+#ifndef XNU_KERNEL_PRIVATE
+struct igmp_ifinfo {
+#else
+struct igmp_ifinfo_u {
+#endif /* XNU_KERNEL_PRIVATE */
+ uint32_t igi_ifindex; /* interface this instance belongs to */
+ uint32_t igi_version; /* IGMPv3 Host Compatibility Mode */
+ uint32_t igi_v1_timer; /* IGMPv1 Querier Present timer (s) */
+ uint32_t igi_v2_timer; /* IGMPv2 Querier Present timer (s) */
+ uint32_t igi_v3_timer; /* IGMPv3 General Query (interface) timer (s)*/
+ uint32_t igi_flags; /* IGMP per-interface flags */
+ uint32_t igi_rv; /* IGMPv3 Robustness Variable */
+ uint32_t igi_qi; /* IGMPv3 Query Interval (s) */
+ uint32_t igi_qri; /* IGMPv3 Query Response Interval (s) */
+ uint32_t igi_uri; /* IGMPv3 Unsolicited Report Interval (s) */
+};
+
+#define IGIF_SILENT 0x00000001 /* Do not use IGMP on this ifp */
+#define IGIF_LOOPBACK 0x00000002 /* Send IGMP reports to loopback */
+
+/*
+ * IGMP version tag.
+ */
+#define IGMP_VERSION_NONE 0 /* Invalid */
+#define IGMP_VERSION_1 1
+#define IGMP_VERSION_2 2
+#define IGMP_VERSION_3 3 /* Default */
+#endif /* PRIVATE */
+
+#ifdef XNU_KERNEL_PRIVATE
+#include <libkern/libkern.h>
+#define IGMP_DEBUG 1
+#ifdef IGMP_DEBUG
+extern char * inet_ntoa(struct in_addr);
+extern int igmp_debug;
+
+#define IGMP_PRINTF(x) do { if (igmp_debug) printf x; } while (0)
+#else
+#define IGMP_PRINTF(x)
+#endif
+
+#define OIGMPSTAT_ADD(name, val) atomic_add_32(&igmpstat.name , (val))
+#define OIGMPSTAT_INC(name) OIGMPSTAT_ADD(name, 1)
+
+#define IGMPSTAT_ADD(name, val) atomic_add_64(&igmpstat_v3.name , (val))
+#define IGMPSTAT_INC(name) IGMPSTAT_ADD(name, 1)
+
#define IGMP_RANDOM_DELAY(X) (random() % (X) + 1)
+#define IGMP_MAX_STATE_CHANGES 24 /* Max pending changes per group */
+
/*
- * States for IGMPv2's leave processing
+ * IGMP per-group states.
*/
-#define IGMP_OTHERMEMBER 0
-#define IGMP_IREPORTEDLAST 1
+#define IGMP_NOT_MEMBER 0 /* Can garbage collect in_multi */
+#define IGMP_SILENT_MEMBER 1 /* Do not perform IGMP for group */
+#define IGMP_REPORTING_MEMBER 2 /* IGMPv1/2/3 we are reporter */
+#define IGMP_IDLE_MEMBER 3 /* IGMPv1/2 we reported last */
+#define IGMP_LAZY_MEMBER 4 /* IGMPv1/2 other member reporting */
+#define IGMP_SLEEPING_MEMBER 5 /* IGMPv1/2 start query response */
+#define IGMP_AWAKENING_MEMBER 6 /* IGMPv1/2 group timer will start */
+#define IGMP_G_QUERY_PENDING_MEMBER 7 /* IGMPv3 group query pending */
+#define IGMP_SG_QUERY_PENDING_MEMBER 8 /* IGMPv3 source query pending */
+#define IGMP_LEAVING_MEMBER 9 /* IGMPv3 dying gasp (pending last */
+ /* retransmission of INCLUDE {}) */
+/*
+ * IGMPv3 protocol control variables.
+ */
+#define IGMP_RV_INIT 2 /* Robustness Variable */
+#define IGMP_RV_MIN 1
+#define IGMP_RV_MAX 7
+
+#define IGMP_QI_INIT 125 /* Query Interval (s) */
+#define IGMP_QI_MIN 1
+#define IGMP_QI_MAX 255
+
+#define IGMP_QRI_INIT 10 /* Query Response Interval (s) */
+#define IGMP_QRI_MIN 1
+#define IGMP_QRI_MAX 255
+
+#define IGMP_URI_INIT 3 /* Unsolicited Report Interval (s) */
+#define IGMP_URI_MIN 0
+#define IGMP_URI_MAX 10
+
+#define IGMP_MAX_G_GS_PACKETS 8 /* # of packets to answer G/GS */
+#define IGMP_MAX_STATE_CHANGE_PACKETS 8 /* # of packets per state change */
+#define IGMP_MAX_RESPONSE_PACKETS 16 /* # of packets for general query */
+#define IGMP_MAX_RESPONSE_BURST 4 /* # of responses to send at once */
+#define IGMP_RESPONSE_BURST_INTERVAL (PR_SLOWHZ) /* 500ms */
/*
- * We must remember what version the subnet's querier is.
- * We conveniently use the IGMP message type for the proper
- * membership report to keep this state.
+ * IGMP-specific mbuf flags.
*/
-#define IGMP_V1_ROUTER IGMP_V1_MEMBERSHIP_REPORT
-#define IGMP_V2_ROUTER IGMP_V2_MEMBERSHIP_REPORT
+#define M_IGMPV2 M_PROTO1 /* Packet is IGMPv2 */
+#define M_IGMPV3_HDR M_PROTO2 /* Packet has IGMPv3 headers */
+#define M_GROUPREC M_PROTO3 /* mbuf chain is a group record */
+#define M_IGMP_LOOP M_LOOP /* transmit on loif, not real ifp */
+
+/*
+ * Default amount of leading space for IGMPv3 to allocate at the
+ * beginning of its mbuf packet chains, to avoid fragmentation and
+ * unnecessary allocation of leading mbufs.
+ */
+#define RAOPT_LEN 4 /* Length of IP Router Alert option */
+#define IGMP_LEADINGSPACE \
+ (sizeof(struct ip) + RAOPT_LEN + sizeof(struct igmp_report))
+
+struct igmp_ifinfo {
+ decl_lck_mtx_data(, igi_lock);
+ uint32_t igi_refcnt; /* reference count */
+ uint32_t igi_debug; /* see ifa_debug flags */
+ LIST_ENTRY(igmp_ifinfo) igi_link;
+ struct ifnet *igi_ifp; /* interface this instance belongs to */
+ uint32_t igi_version; /* IGMPv3 Host Compatibility Mode */
+ uint32_t igi_v1_timer; /* IGMPv1 Querier Present timer (s) */
+ uint32_t igi_v2_timer; /* IGMPv2 Querier Present timer (s) */
+ uint32_t igi_v3_timer; /* IGMPv3 General Query (interface) timer (s)*/
+ uint32_t igi_flags; /* IGMP per-interface flags */
+ uint32_t igi_rv; /* IGMPv3 Robustness Variable */
+ uint32_t igi_qi; /* IGMPv3 Query Interval (s) */
+ uint32_t igi_qri; /* IGMPv3 Query Response Interval (s) */
+ uint32_t igi_uri; /* IGMPv3 Unsolicited Report Interval (s) */
+ SLIST_HEAD(,in_multi) igi_relinmhead; /* released groups */
+ struct ifqueue igi_gq; /* queue of general query responses */
+ struct ifqueue igi_v2q; /* queue of v1/v2 packets */
+};
+
+#define IGI_LOCK_ASSERT_HELD(_igi) \
+ lck_mtx_assert(&(_igi)->igi_lock, LCK_MTX_ASSERT_OWNED)
+
+#define IGI_LOCK_ASSERT_NOTHELD(_igi) \
+ lck_mtx_assert(&(_igi)->igi_lock, LCK_MTX_ASSERT_NOTOWNED)
+
+#define IGI_LOCK(_igi) \
+ lck_mtx_lock(&(_igi)->igi_lock)
+
+#define IGI_LOCK_SPIN(_igi) \
+ lck_mtx_lock_spin(&(_igi)->igi_lock)
+
+#define IGI_CONVERT_LOCK(_igi) do { \
+ IGI_LOCK_ASSERT_HELD(_igi); \
+ lck_mtx_convert_spin(&(_igi)->igi_lock); \
+} while (0)
+
+#define IGI_UNLOCK(_igi) \
+ lck_mtx_unlock(&(_igi)->igi_lock)
+
+#define IGI_ADDREF(_igi) \
+ igi_addref(_igi, 0)
+
+#define IGI_ADDREF_LOCKED(_igi) \
+ igi_addref(_igi, 1)
+
+#define IGI_REMREF(_igi) \
+ igi_remref(_igi)
/*
- * Revert to new router if we haven't heard from an old router in
- * this amount of time.
+ * Per-link IGMP context.
*/
-#define IGMP_AGE_THRESHOLD 540
+#define IGMP_IFINFO(ifp) ((ifp)->if_igi)
-void igmp_init(void);
-void igmp_input(struct mbuf *, int);
-int igmp_joingroup(struct in_multi *);
-void igmp_leavegroup(struct in_multi *);
-void igmp_fasttimo(void);
-void igmp_slowtimo(void);
+extern void igmp_init(void) __attribute__((section("__TEXT, initcode")));
+extern int igmp_change_state(struct in_multi *);
+extern struct igmp_ifinfo *igmp_domifattach(struct ifnet *, int);
+extern void igmp_domifreattach(struct igmp_ifinfo *);
+extern void igmp_domifdetach(struct ifnet *);
+extern void igmp_input(struct mbuf *, int);
+extern int igmp_joingroup(struct in_multi *);
+extern void igmp_leavegroup(struct in_multi *);
+extern void igmp_slowtimo(void);
+extern void igi_addref(struct igmp_ifinfo *, int);
+extern void igi_remref(struct igmp_ifinfo *);
SYSCTL_DECL(_net_inet_igmp);
-#endif /* KERNEL */
-#endif /* KERNEL_PRIVATE */
+#endif /* XNU_KERNEL_PRIVATE */
/*
* Names for IGMP sysctl objects
#define IGMPCTL_STATS 1 /* statistics (read-only) */
#define IGMPCTL_MAXID 2
-#ifdef KERNEL_PRIVATE
+#ifdef XNU_KERNEL_PRIVATE
#define IGMPCTL_NAMES { \
{ 0, 0 }, \
{ "stats", CTLTYPE_STRUCT }, \
}
-#endif /* KERNEL_PRIVATE */
+#endif /* XNU_KERNEL_PRIVATE */
#endif
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