/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2019 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
- *
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. The rights granted to you under the
- * License may not be used to create, or enable the creation or
- * redistribution of, unlawful or unlicensed copies of an Apple operating
- * system, or to circumvent, violate, or enable the circumvention or
- * violation of, any terms of an Apple operating system software license
- * agreement.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
*
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
* limitations under the License.
*
- * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* Copyright (c) 1985, 1986, 1993
* SUCH DAMAGE.
*
* @(#)in_var.h 8.2 (Berkeley) 1/9/95
- * $FreeBSD: src/sys/netinet/in_var.h,v 1.33.2.2 2001/07/17 10:50:01 ru Exp $
*/
#ifndef _NETINET_IN_VAR_H_
#include <sys/appleapiopts.h>
#include <sys/queue.h>
-#ifdef __APPLE__
#include <sys/kern_event.h>
-#endif
+#include <net/net_kev.h>
-#ifdef PRIVATE
+#ifdef BSD_KERNEL_PRIVATE
+#include <net/route.h>
/*
* Interface address, Internet version. One of these structures
* of the structure and is assumed to be first.
*/
struct in_ifaddr {
- struct ifaddr ia_ifa; /* protocol-independent info */
-#define ia_ifp ia_ifa.ifa_ifp
-#define ia_flags ia_ifa.ifa_flags
- /* ia_{,sub}net{,mask} in host order */
- u_long ia_net; /* network number of interface */
- u_long ia_netmask; /* mask of net part */
- u_long ia_subnet; /* subnet number, including net */
- u_long ia_subnetmask; /* mask of subnet part */
- struct in_addr ia_netbroadcast; /* to recognize net broadcasts */
- TAILQ_ENTRY(in_ifaddr) ia_link; /* tailq macro glue */
- struct sockaddr_in ia_addr; /* reserve space for interface name */
- struct sockaddr_in ia_dstaddr; /* reserve space for broadcast addr */
-#define ia_broadaddr ia_dstaddr
- struct sockaddr_in ia_sockmask; /* reserve space for general netmask */
+ struct ifaddr ia_ifa; /* protocol-independent info */
+#define ia_ifp ia_ifa.ifa_ifp
+#define ia_flags ia_ifa.ifa_flags
+ /* ia_{,sub}net{,mask} in host order */
+ u_int32_t ia_net; /* network number of interface */
+ u_int32_t ia_netmask; /* mask of net part */
+ u_int32_t ia_subnet; /* subnet number, including net */
+ u_int32_t ia_subnetmask; /* mask of subnet part */
+ struct in_addr ia_netbroadcast; /* to recognize net broadcasts */
+ TAILQ_ENTRY(in_ifaddr) ia_link; /* tailq macro glue */
+ struct sockaddr_in ia_addr; /* reserve space for interface name */
+ struct sockaddr_in ia_dstaddr; /* reserve space for broadcast addr */
+#define ia_broadaddr ia_dstaddr
+ struct sockaddr_in ia_sockmask; /* reserve space for general netmask */
+ TAILQ_ENTRY(in_ifaddr) ia_hash; /* hash bucket entry */
};
-#endif /* PRIVATE */
-struct in_aliasreq {
- char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */
- struct sockaddr_in ifra_addr;
- struct sockaddr_in ifra_broadaddr;
-#define ifra_dstaddr ifra_broadaddr
- struct sockaddr_in ifra_mask;
-#ifdef __APPLE__
- u_long dlt;
-#endif
+#define ifatoia(ifa) ((struct in_ifaddr *)(void *)(ifa))
+#endif /* BSD_KERNEL_PRIVATE */
+
+struct in_aliasreq {
+ char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */
+ struct sockaddr_in ifra_addr;
+ struct sockaddr_in ifra_broadaddr;
+#define ifra_dstaddr ifra_broadaddr
+ struct sockaddr_in ifra_mask;
};
/*
- * Event data, internet style.
+ * Event data, inet style.
*/
struct kev_in_data {
- struct net_event_data link_data;
- struct in_addr ia_addr;
- u_long ia_net; /* network number of interface */
- u_long ia_netmask; /* mask of net part */
- u_long ia_subnet; /* subnet number, including net */
- u_long ia_subnetmask; /* mask of subnet part */
- struct in_addr ia_netbroadcast; /* to recognize net broadcasts */
- struct in_addr ia_dstaddr;
+ struct net_event_data link_data;
+ struct in_addr ia_addr; /* interface address */
+ u_int32_t ia_net; /* network number of interface */
+ u_int32_t ia_netmask; /* mask of net part */
+ u_int32_t ia_subnet; /* subnet number, including net */
+ u_int32_t ia_subnetmask; /* mask of subnet part */
+ struct in_addr ia_netbroadcast; /* to recognize net broadcasts */
+ struct in_addr ia_dstaddr;
};
struct kev_in_collision {
- struct net_event_data link_data; /* link colliding arp was received on */
- struct in_addr ia_ipaddr; /* IP address we and another node are using */
- u_char hw_len; /* length of hardware address */
- u_char hw_addr[0]; /* variable length hardware address */
+ struct net_event_data link_data; /* link where ARP was received on */
+ struct in_addr ia_ipaddr; /* conflicting IP address */
+ u_char hw_len; /* length of hardware address */
+ u_char hw_addr[0]; /* variable length hardware address */
+};
+
+struct kev_in_arpfailure {
+ struct net_event_data link_data; /* link where ARP is being sent */
};
+struct kev_in_arpalive {
+ struct net_event_data link_data; /* link where ARP was received */
+};
+#ifdef PRIVATE
/*
- * Define inet event subclass and specific inet events.
+ * Common structure for KEV_SOCKET_SUBCLASS
+ * Have to place here to avoid declaration dependencies.
*/
+struct kev_socket_event_data {
+ union sockaddr_in_4_6 kev_sockname;
+ union sockaddr_in_4_6 kev_peername;
+};
-#define KEV_INET_SUBCLASS 1
+struct kev_socket_closed {
+ struct kev_socket_event_data ev_data;
+};
+#endif /* PRIVATE */
-#define KEV_INET_NEW_ADDR 1
-#define KEV_INET_CHANGED_ADDR 2
-#define KEV_INET_ADDR_DELETED 3
-#define KEV_INET_SIFDSTADDR 4
-#define KEV_INET_SIFBRDADDR 5
-#define KEV_INET_SIFNETMASK 6
-#define KEV_INET_ARPCOLLISION 7 /* use kev_in_collision */
+#ifdef __APPLE_API_PRIVATE
+struct kev_in_portinuse {
+ u_int16_t port; /* conflicting port number in host order */
+ u_int32_t req_pid; /* PID port requestor */
+ u_int32_t reserved[2];
+};
+#endif /* __APPLE_API_PRIVATE */
-#ifdef KERNEL_PRIVATE
+#ifdef BSD_KERNEL_PRIVATE
+extern void socket_post_kev_msg(uint32_t, struct kev_socket_event_data *,
+ uint32_t);
+extern void socket_post_kev_msg_closed(struct socket *);
+
+#include <net/if.h>
+#include <net/if_var.h>
+#include <net/if_llatbl.h>
+#include <kern/locks.h>
+#include <sys/tree.h>
/*
* Given a pointer to an in_ifaddr (ifaddr),
* return a pointer to the addr as a sockaddr_in.
#define IN_LNAOF(in, ifa) \
((ntohl((in).s_addr) & ~((struct in_ifaddr *)(ifa)->ia_subnetmask))
-extern TAILQ_HEAD(in_ifaddrhead, in_ifaddr) in_ifaddrhead;
-extern struct ifqueue ipintrq; /* ip packet input queue */
-extern struct in_addr zeroin_addr;
-extern u_char inetctlerrmap[];
-extern lck_mtx_t *rt_mtx;
+/*
+ * Hash table for IPv4 addresses.
+ */
+extern TAILQ_HEAD(in_ifaddrhead, in_ifaddr) in_ifaddrhead;
+extern TAILQ_HEAD(in_ifaddrhashhead, in_ifaddr) * in_ifaddrhashtbl;
+extern lck_rw_t *in_ifaddr_rwlock;
+
+#define INADDR_HASH(x) (&in_ifaddrhashtbl[inaddr_hashval(x)])
+
+extern u_char inetctlerrmap[];
/*
* Macro for finding the interface (ifnet structure) corresponding to one
* of our IP addresses.
*/
-#define INADDR_TO_IFP(addr, ifp) \
- /* struct in_addr addr; */ \
- /* struct ifnet *ifp; */ \
-{ \
- struct in_ifaddr *ia; \
-\
- lck_mtx_assert(rt_mtx, LCK_MTX_ASSERT_NOTOWNED); \
- lck_mtx_lock(rt_mtx); \
- TAILQ_FOREACH(ia, &in_ifaddrhead, ia_link) \
- if (IA_SIN(ia)->sin_addr.s_addr == (addr).s_addr) \
- break; \
- (ifp) = (ia == NULL) ? NULL : ia->ia_ifp; \
- lck_mtx_unlock(rt_mtx); \
+#define INADDR_TO_IFP(addr, ifp) \
+ /* struct in_addr addr; */ \
+ /* struct ifnet *ifp; */ \
+{ \
+ struct in_ifaddr *ia; \
+ \
+ lck_rw_lock_shared(in_ifaddr_rwlock); \
+ TAILQ_FOREACH(ia, INADDR_HASH((addr).s_addr), ia_hash) { \
+ IFA_LOCK_SPIN(&ia->ia_ifa); \
+ if (IA_SIN(ia)->sin_addr.s_addr == (addr).s_addr) { \
+ IFA_UNLOCK(&ia->ia_ifa); \
+ break; \
+ } \
+ IFA_UNLOCK(&ia->ia_ifa); \
+ } \
+ (ifp) = (ia == NULL) ? NULL : ia->ia_ifp; \
+ lck_rw_done(in_ifaddr_rwlock); \
}
/*
* Macro for finding the internet address structure (in_ifaddr) corresponding
- * to a given interface (ifnet structure).
+ * to a given interface (ifnet structure). Caller is responsible for freeing
+ * the reference.
*/
-#define IFP_TO_IA(ifp, ia) \
- /* struct ifnet *ifp; */ \
- /* struct in_ifaddr *ia; */ \
-{ \
- lck_mtx_assert(rt_mtx, LCK_MTX_ASSERT_NOTOWNED); \
- lck_mtx_lock(rt_mtx); \
- for ((ia) = TAILQ_FIRST(&in_ifaddrhead); \
- (ia) != NULL && (ia)->ia_ifp != (ifp); \
- (ia) = TAILQ_NEXT((ia), ia_link)) \
- continue; \
- lck_mtx_unlock(rt_mtx); \
+#define IFP_TO_IA(ifp, ia) \
+ /* struct ifnet *ifp; */ \
+ /* struct in_ifaddr *ia; */ \
+{ \
+ lck_rw_lock_shared(in_ifaddr_rwlock); \
+ for ((ia) = TAILQ_FIRST(&in_ifaddrhead); \
+ (ia) != NULL && (ia)->ia_ifp != (ifp); \
+ (ia) = TAILQ_NEXT((ia), ia_link)) \
+ continue; \
+ if ((ia) != NULL) \
+ IFA_ADDREF(&(ia)->ia_ifa); \
+ lck_rw_done(in_ifaddr_rwlock); \
}
/*
* to change that - as it might break a number of things
*/
+/*
+ * Legacy IPv4 IGMP per-link structure.
+ */
struct router_info {
struct ifnet *rti_ifp;
int rti_type; /* type of router which is querier on this interface */
int rti_time; /* # of slow timeouts since last old query */
- struct router_info *rti_next;
+ SLIST_ENTRY(router_info) rti_list;
+};
+
+/*
+ * IPv4 multicast IGMP-layer source entry.
+ */
+struct ip_msource {
+ RB_ENTRY(ip_msource) ims_link; /* RB tree links */
+ in_addr_t ims_haddr; /* host byte order */
+ struct ims_st {
+ uint16_t ex; /* # of exclusive members */
+ uint16_t in; /* # of inclusive members */
+ } ims_st[2]; /* state at t0, t1 */
+ uint8_t ims_stp; /* pending query */
+};
+
+/*
+ * IPv4 multicast PCB-layer source entry.
+ */
+struct in_msource {
+ RB_ENTRY(ip_msource) ims_link; /* RB tree links */
+ in_addr_t ims_haddr; /* host byte order */
+ uint8_t imsl_st[2]; /* state before/at commit */
+};
+
+RB_HEAD(ip_msource_tree, ip_msource); /* define struct ip_msource_tree */
+
+RB_PROTOTYPE_SC_PREV(__private_extern__, ip_msource_tree, ip_msource,
+ ims_link, ip_msource_cmp);
+
+/*
+ * IPv4 multicast PCB-layer group filter descriptor.
+ */
+struct in_mfilter {
+ struct ip_msource_tree imf_sources; /* source list for (S,G) */
+ u_long imf_nsrc; /* # of source entries */
+ uint8_t imf_st[2]; /* state before/at commit */
};
+struct igmp_ifinfo;
+
/*
- * Internet multicast address structure. There is one of these for each IP
- * multicast group to which this host belongs on a given network interface.
- * For every entry on the interface's if_multiaddrs list which represents
- * an IP multicast group, there is one of these structures. They are also
- * kept on a system-wide list to make it easier to keep our legacy IGMP code
- * compatible with the rest of the world (see IN_FIRST_MULTI et al, below).
+ * IPv4 group descriptor.
+ *
+ * For every entry on an ifnet's if_multiaddrs list which represents
+ * an IP multicast group, there is one of these structures.
+ *
+ * If any source filters are present, then a node will exist in the RB-tree
+ * to permit fast lookup by source whenever an operation takes place.
+ * This permits pre-order traversal when we issue reports.
+ * Source filter trees are kept separately from the socket layer to
+ * greatly simplify locking.
+ *
+ * When IGMPv3 is active, inm_timer is the response to group query timer.
+ * The state-change timer inm_sctimer is separate; whenever state changes
+ * for the group the state change record is generated and transmitted,
+ * and kept if retransmissions are necessary.
+ *
+ * The request count here is a count of requests for this address, not a
+ * count of pointers to this structure.
+ *
+ * FUTURE: inm_link is now only used when groups are being purged
+ * on a detaching ifnet. It could be demoted to a SLIST_ENTRY.
*/
struct in_multi {
- LIST_ENTRY(in_multi) inm_link; /* queue macro glue */
- struct in_addr inm_addr; /* IP multicast address, convenience */
- struct ifnet *inm_ifp; /* back pointer to ifnet */
- struct ifmultiaddr *inm_ifma; /* back pointer to ifmultiaddr */
- u_int inm_timer; /* IGMP membership report timer */
- u_int inm_state; /* state of the membership */
- struct router_info *inm_rti; /* router info*/
+ decl_lck_mtx_data(, inm_lock);
+ u_int32_t inm_refcount; /* reference count */
+ u_int32_t inm_reqcnt; /* request count for this address */
+ u_int32_t inm_debug; /* see ifa_debug flags */
+ LIST_ENTRY(in_multi) inm_link; /* queue macro glue */
+ struct in_addr inm_addr; /* IP multicast address, convenience */
+ struct ifnet *inm_ifp; /* back pointer to ifnet */
+ struct ifmultiaddr *inm_ifma; /* back pointer to ifmultiaddr */
+ u_int inm_timer; /* IGMPv1/v2 group / v3 query timer */
+ u_int inm_state; /* state of the membership */
+ void *inm_rti; /* unused, legacy field */
+
+ /* New fields for IGMPv3 follow. */
+ struct igmp_ifinfo *inm_igi; /* IGMP info */
+ SLIST_ENTRY(in_multi) inm_dtle; /* detached waiting for rele */
+ SLIST_ENTRY(in_multi) inm_nrele; /* to-be-released by IGMP */
+ u_int32_t inm_nrelecnt; /* deferred release count */
+ struct ip_msource_tree inm_srcs; /* tree of sources */
+ u_long inm_nsrc; /* # of tree entries */
+
+ struct ifqueue inm_scq; /* queue of pending
+ * state-change packets */
+ struct timeval inm_lastgsrtv; /* Time of last G-S-R query */
+ uint16_t inm_sctimer; /* state-change timer */
+ uint16_t inm_scrv; /* state-change rexmit count */
+
+ /*
+ * SSM state counters which track state at T0 (the time the last
+ * state-change report's RV timer went to zero) and T1
+ * (time of pending report, i.e. now).
+ * Used for computing IGMPv3 state-change reports. Several refcounts
+ * are maintained here to optimize for common use-cases.
+ */
+ struct inm_st {
+ uint16_t iss_fmode; /* IGMP filter mode */
+ uint16_t iss_asm; /* # of ASM listeners */
+ uint16_t iss_ex; /* # of exclusive members */
+ uint16_t iss_in; /* # of inclusive members */
+ uint16_t iss_rec; /* # of recorded sources */
+ } inm_st[2]; /* state at t0, t1 */
+
+ void (*inm_trace) /* callback fn for tracing refs */
+ (struct in_multi *, int);
};
+#define INM_LOCK_ASSERT_HELD(_inm) \
+ LCK_MTX_ASSERT(&(_inm)->inm_lock, LCK_MTX_ASSERT_OWNED)
+
+#define INM_LOCK_ASSERT_NOTHELD(_inm) \
+ LCK_MTX_ASSERT(&(_inm)->inm_lock, LCK_MTX_ASSERT_NOTOWNED)
+
+#define INM_LOCK(_inm) \
+ lck_mtx_lock(&(_inm)->inm_lock)
+
+#define INM_LOCK_SPIN(_inm) \
+ lck_mtx_lock_spin(&(_inm)->inm_lock)
+
+#define INM_CONVERT_LOCK(_inm) do { \
+ INM_LOCK_ASSERT_HELD(_inm); \
+ lck_mtx_convert_spin(&(_inm)->inm_lock); \
+} while (0)
+
+#define INM_UNLOCK(_inm) \
+ lck_mtx_unlock(&(_inm)->inm_lock)
+
+#define INM_ADDREF(_inm) \
+ inm_addref(_inm, 0)
+
+#define INM_ADDREF_LOCKED(_inm) \
+ inm_addref(_inm, 1)
+
+#define INM_REMREF(_inm) \
+ inm_remref(_inm, 0)
+
+#define INM_REMREF_LOCKED(_inm) \
+ inm_remref(_inm, 1)
+
#ifdef SYSCTL_DECL
SYSCTL_DECL(_net_inet_ip);
SYSCTL_DECL(_net_inet_raw);
/*
* Macro for looking up the in_multi record for a given IP multicast address
* on a given interface. If no matching record is found, "inm" is set null.
+ *
+ * We do this differently compared other BSD implementations; instead of
+ * walking the if_multiaddrs list at the interface and returning the
+ * ifma_protospec value of a matching entry, we search the global list
+ * of in_multi records and find it that way. Otherwise either the two
+ * structures (in_multi, ifmultiaddr) need to be ref counted both ways,
+ * which will make things too complicated, or they need to reside in the
+ * same protected domain, which they aren't.
+ *
+ * Must be called with in_multihead_lock held.
*/
-#define IN_LOOKUP_MULTI(addr, ifp, inm) \
- /* struct in_addr addr; */ \
- /* struct ifnet *ifp; */ \
- /* struct in_multi *inm; */ \
-do { \
- struct ifmultiaddr *ifma; \
-\
- LIST_FOREACH(ifma, &((ifp)->if_multiaddrs), ifma_link) { \
- if (ifma->ifma_addr->sa_family == AF_INET \
- && ((struct sockaddr_in *)ifma->ifma_addr)->sin_addr.s_addr == \
- (addr).s_addr) \
- break; \
- } \
- (inm) = ifma ? ifma->ifma_protospec : 0; \
-} while(0)
+#define IN_LOOKUP_MULTI(addr, ifp, inm) \
+ /* struct in_addr *addr; */ \
+ /* struct ifnet *ifp; */ \
+ /* struct in_multi *inm; */ \
+do { \
+ struct in_multistep _step; \
+ IN_FIRST_MULTI(_step, inm); \
+ while ((inm) != NULL) { \
+ INM_LOCK_SPIN(inm); \
+ if ((inm)->inm_ifp == (ifp) && \
+ (inm)->inm_addr.s_addr == (addr)->s_addr) { \
+ INM_ADDREF_LOCKED(inm); \
+ INM_UNLOCK(inm); \
+ break; \
+ } \
+ INM_UNLOCK(inm); \
+ IN_NEXT_MULTI(_step, inm); \
+ } \
+} while (0)
/*
* Macro to step through all of the in_multi records, one at a time.
* provide. IN_FIRST_MULTI(), below, must be called to initialize "step"
* and get the first record. Both macros return a NULL "inm" when there
* are no remaining records.
+ *
+ * Must be called with in_multihead_lock held.
*/
-#define IN_NEXT_MULTI(step, inm) \
- /* struct in_multistep step; */ \
- /* struct in_multi *inm; */ \
-do { \
- if (((inm) = (step).i_inm) != NULL) \
- (step).i_inm = LIST_NEXT((step).i_inm, inm_link); \
-} while(0)
-
-#define IN_FIRST_MULTI(step, inm) \
- /* struct in_multistep step; */ \
- /* struct in_multi *inm; */ \
-do { \
- (step).i_inm = LIST_FIRST(&in_multihead); \
- IN_NEXT_MULTI((step), (inm)); \
-} while(0)
-
-struct route;
-struct in_multi *in_addmulti(struct in_addr *, struct ifnet *);
-void in_delmulti(struct in_multi **);
-int in_control(struct socket *, u_long, caddr_t, struct ifnet *,
- struct proc *);
-void in_rtqdrain(void);
-void ip_input(struct mbuf *);
-int in_ifadown(struct ifaddr *ifa, int);
-void in_ifscrub(struct ifnet *, struct in_ifaddr *, int);
-int ipflow_fastforward(struct mbuf *);
-void ipflow_create(const struct route *, struct mbuf *);
-void ipflow_slowtimo(void);
-
-#endif /* KERNEL_PRIVATE */
+#define IN_NEXT_MULTI(step, inm) \
+ /* struct in_multistep step; */ \
+ /* struct in_multi *inm; */ \
+do { \
+ in_multihead_lock_assert(LCK_RW_ASSERT_HELD); \
+ if (((inm) = (step).i_inm) != NULL) \
+ (step).i_inm = LIST_NEXT((step).i_inm, inm_link); \
+} while (0)
+#define IN_FIRST_MULTI(step, inm) \
+ /* struct in_multistep step; */ \
+ /* struct in_multi *inm; */ \
+do { \
+ in_multihead_lock_assert(LCK_RW_ASSERT_HELD); \
+ (step).i_inm = LIST_FIRST(&in_multihead); \
+ IN_NEXT_MULTI((step), (inm)); \
+} while (0)
+
+extern lck_mtx_t *inet_domain_mutex;
+extern struct domain *inetdomain;
+
+struct ip_moptions;
+struct inpcb;
+
+/*
+ * Return values for imo_multi_filter().
+ */
+#define MCAST_PASS 0 /* Pass */
+#define MCAST_NOTGMEMBER 1 /* This host not a member of group */
+#define MCAST_NOTSMEMBER 2 /* This host excluded source */
+#define MCAST_MUTED 3 /* [deprecated] */
+
+/*
+ * Per-interface IPv4 structures.
+ */
+struct in_ifextra {
+ uint32_t netsig_len;
+ u_int8_t netsig[IFNET_SIGNATURELEN];
+ struct lltable *ii_llt; /* ARP state */
+};
+#define IN_IFEXTRA(_ifp) ((struct in_ifextra *)(_ifp->if_inetdata))
+#define LLTABLE(ifp) ((IN_IFEXTRA(ifp) == NULL) ? NULL : IN_IFEXTRA(ifp)->ii_llt)
+
+extern u_int32_t ipv4_ll_arp_aware;
+
+extern void in_ifaddr_init(void);
+extern int imo_multi_filter(const struct ip_moptions *,
+ const struct ifnet *, const struct sockaddr_in *,
+ const struct sockaddr_in *);
+extern int imo_clone(struct inpcb *, struct inpcb *);
+extern void inm_commit(struct in_multi *);
+extern void inm_clear_recorded(struct in_multi *);
+extern void inm_print(const struct in_multi *);
+extern int inm_record_source(struct in_multi *inm, const in_addr_t);
+extern void inm_release(struct in_multi *);
+extern void in_multi_init(void);
+extern struct in_multi *in_addmulti(struct in_addr *, struct ifnet *);
+extern void in_delmulti(struct in_multi *);
+extern int in_leavegroup(struct in_multi *, struct in_mfilter *);
+extern int in_multi_detach(struct in_multi *);
+extern void inm_addref(struct in_multi *, int);
+extern void inm_remref(struct in_multi *, int);
+extern void inm_purge(struct in_multi *);
+extern uint8_t ims_get_mode(const struct in_multi *,
+ const struct ip_msource *, uint8_t);
+extern int in_control(struct socket *, u_long, caddr_t, struct ifnet *,
+ struct proc *);
+extern int in_inithead(void **, int);
+extern void in_rtqdrain(void);
+extern struct radix_node *in_validate(struct radix_node *);
+extern void ip_input(struct mbuf *);
+extern void ip_input_process_list(struct mbuf *);
+extern int in_ifadown(struct ifaddr *ifa, int);
+extern void in_ifscrub(struct ifnet *, struct in_ifaddr *, int);
+extern u_int32_t inaddr_hashval(u_int32_t);
+extern void in_purgeaddrs(struct ifnet *);
+extern void gre_input(struct mbuf *, int);
+extern void imf_leave(struct in_mfilter *);
+extern void imf_purge(struct in_mfilter *);
+extern int inp_join_group(struct inpcb *, struct sockopt *);
+extern int inp_leave_group(struct inpcb *, struct sockopt *);
+extern void in_multihead_lock_exclusive(void);
+extern void in_multihead_lock_shared(void);
+extern void in_multihead_lock_assert(int);
+extern void in_multihead_lock_done(void);
+#endif /* BSD_KERNEL_PRIVATE */
/* INET6 stuff */
#include <netinet6/in6_var.h>
-
#endif /* _NETINET_IN_VAR_H_ */
projects / apple / xnu.git / blobdiff