/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2016 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) 1982, 1986, 1993
*
* @(#)ip_var.h 8.2 (Berkeley) 1/9/95
*/
+/*
+ * NOTICE: This file was modified by SPARTA, Inc. in 2007 to introduce
+ * support for mandatory and extensible security protections. This notice
+ * is included in support of clause 2.2 (b) of the Apple Public License,
+ * Version 2.0.
+ */
#ifndef _NETINET_IP_VAR_H_
#define _NETINET_IP_VAR_H_
struct in_addr ih_dst; /* destination internet address */
};
-#ifdef KERNEL_PRIVATE
+#ifdef BSD_KERNEL_PRIVATE
+#if CONFIG_MACF_NET
+struct label;
+#endif /* CONFIG_MACF_NET */
/*
* Ip reassembly queue structure. Each fragment
* being reassembled is attached to one of these structures.
* be reclaimed if memory becomes tight.
*/
struct ipq {
- struct ipq *next,*prev; /* to other reass headers */
+ TAILQ_ENTRY(ipq) ipq_list; /* to other reass headers */
+ struct mbuf *ipq_frags; /* to ip headers of fragments */
+#if CONFIG_MACF_NET
+ struct label *ipq_label; /* MAC label */
+#endif /* CONFIG_MACF_NET */
u_char ipq_ttl; /* time for reass q to live */
u_char ipq_p; /* protocol of this fragment */
u_short ipq_id; /* sequence id for reassembly */
- struct mbuf *ipq_frags; /* to ip headers of fragments */
- struct in_addr ipq_src,ipq_dst;
- u_long ipq_nfrags;
- TAILQ_ENTRY(ipq) ipq_list;
- u_long reserved[1]; /* for future use */
+ struct in_addr ipq_src, ipq_dst;
+ u_int32_t ipq_nfrags; /* # frags in this packet */
+ uint32_t ipq_csum_flags; /* checksum flags */
+ uint32_t ipq_csum; /* partial checksum value */
#if IPDIVERT
#ifdef IPDIVERT_44
u_int32_t ipq_div_info; /* ipfw divert port & flags */
-#else
- u_int16_t ipq_divert; /* ipfw divert port (Maintain backward compat.) */
-#endif
+#else /* !IPDIVERT_44 */
+ u_int16_t ipq_divert; /* ipfw divert port (legacy) */
+#endif /* !IPDIVERT_44 */
u_int16_t ipq_div_cookie; /* ipfw divert cookie */
-#endif
+#endif /* IPDIVERT */
};
/*
* The actual length of the options (including ipopt_dst)
* is in m_len.
*/
-#endif /* KERNEL_PRIVATE */
-#define MAX_IPOPTLEN 40
-#ifdef KERNEL_PRIVATE
-
+#endif /* BSD_KERNEL_PRIVATE */
+#define MAX_IPOPTLEN 40
+#ifdef BSD_KERNEL_PRIVATE
struct ipoption {
struct in_addr ipopt_dst; /* first-hop dst if source routed */
char ipopt_list[MAX_IPOPTLEN]; /* options proper */
* passed to ip_output when IP multicast options are in use.
*/
struct ip_moptions {
+ decl_lck_mtx_data(, imo_lock);
+ uint32_t imo_refcnt; /* ref count */
+ uint32_t imo_debug; /* see ifa_debug flags */
struct ifnet *imo_multicast_ifp; /* ifp for outgoing multicasts */
u_char imo_multicast_ttl; /* TTL for outgoing multicasts */
u_char imo_multicast_loop; /* 1 => hear sends if a member */
u_short imo_num_memberships; /* no. memberships this socket */
- struct in_multi *imo_membership[IP_MAX_MEMBERSHIPS];
- u_long imo_multicast_vif; /* vif num outgoing multicasts */
+ u_short imo_max_memberships; /* max memberships this socket */
+ struct in_multi **imo_membership; /* group memberships */
+ struct in_mfilter *imo_mfilters; /* source filters */
+ u_int32_t imo_multicast_vif; /* vif num outgoing multicasts */
struct in_addr imo_multicast_addr; /* ifindex/addr on MULTICAST_IF */
+ void (*imo_trace) /* callback fn for tracing refs */
+ (struct ip_moptions *, int);
};
+#define IMO_LOCK_ASSERT_HELD(_imo) \
+ lck_mtx_assert(&(_imo)->imo_lock, LCK_MTX_ASSERT_OWNED)
+
+#define IMO_LOCK_ASSERT_NOTHELD(_imo) \
+ lck_mtx_assert(&(_imo)->imo_lock, LCK_MTX_ASSERT_NOTOWNED)
+
+#define IMO_LOCK(_imo) \
+ lck_mtx_lock(&(_imo)->imo_lock)
+
+#define IMO_LOCK_SPIN(_imo) \
+ lck_mtx_lock_spin(&(_imo)->imo_lock)
+
+#define IMO_CONVERT_LOCK(_imo) do { \
+ IMO_LOCK_ASSERT_HELD(_imo); \
+ lck_mtx_convert_spin(&(_imo)->imo_lock); \
+} while (0)
+
+#define IMO_UNLOCK(_imo) \
+ lck_mtx_unlock(&(_imo)->imo_lock)
+
+#define IMO_ADDREF(_imo) \
+ imo_addref(_imo, 0)
+
+#define IMO_ADDREF_LOCKED(_imo) \
+ imo_addref(_imo, 1)
+
+#define IMO_REMREF(_imo) \
+ imo_remref(_imo)
+
/* mbuf tag for ip_forwarding info */
struct ip_fwd_tag {
struct sockaddr_in *next_hop; /* next_hop */
};
-
-#endif /* KERNEL_PRIVATE */
+#endif /* BSD_KERNEL_PRIVATE */
struct ipstat {
- u_long ips_total; /* total packets received */
- u_long ips_badsum; /* checksum bad */
- u_long ips_tooshort; /* packet too short */
- u_long ips_toosmall; /* not enough data */
- u_long ips_badhlen; /* ip header length < data size */
- u_long ips_badlen; /* ip length < ip header length */
- u_long ips_fragments; /* fragments received */
- u_long ips_fragdropped; /* frags dropped (dups, out of space) */
- u_long ips_fragtimeout; /* fragments timed out */
- u_long ips_forward; /* packets forwarded */
- u_long ips_fastforward; /* packets fast forwarded */
- u_long ips_cantforward; /* packets rcvd for unreachable dest */
- u_long ips_redirectsent; /* packets forwarded on same net */
- u_long ips_noproto; /* unknown or unsupported protocol */
- u_long ips_delivered; /* datagrams delivered to upper level*/
- u_long ips_localout; /* total ip packets generated here */
- u_long ips_odropped; /* lost packets due to nobufs, etc. */
- u_long ips_reassembled; /* total packets reassembled ok */
- u_long ips_fragmented; /* datagrams successfully fragmented */
- u_long ips_ofragments; /* output fragments created */
- u_long ips_cantfrag; /* don't fragment flag was set, etc. */
- u_long ips_badoptions; /* error in option processing */
- u_long ips_noroute; /* packets discarded due to no route */
- u_long ips_badvers; /* ip version != 4 */
- u_long ips_rawout; /* total raw ip packets generated */
- u_long ips_toolong; /* ip length > max ip packet size */
- u_long ips_notmember; /* multicasts for unregistered grps */
- u_long ips_nogif; /* no match gif found */
- u_long ips_badaddr; /* invalid address on header */
+ u_int32_t ips_total; /* total packets received */
+ u_int32_t ips_badsum; /* checksum bad */
+ u_int32_t ips_tooshort; /* packet too short */
+ u_int32_t ips_toosmall; /* not enough data */
+ u_int32_t ips_badhlen; /* ip header length < data size */
+ u_int32_t ips_badlen; /* ip length < ip header length */
+ u_int32_t ips_fragments; /* fragments received */
+ u_int32_t ips_fragdropped; /* frags dropped (dups, out of space) */
+ u_int32_t ips_fragtimeout; /* fragments timed out */
+ u_int32_t ips_forward; /* packets forwarded */
+ u_int32_t ips_fastforward; /* packets fast forwarded */
+ u_int32_t ips_cantforward; /* packets rcvd for unreachable dest */
+ u_int32_t ips_redirectsent; /* packets forwarded on same net */
+ u_int32_t ips_noproto; /* unknown or unsupported protocol */
+ u_int32_t ips_delivered; /* datagrams delivered to upper level */
+ u_int32_t ips_localout; /* total ip packets generated here */
+ u_int32_t ips_odropped; /* lost packets due to nobufs, etc. */
+ u_int32_t ips_reassembled; /* total packets reassembled ok */
+ u_int32_t ips_fragmented; /* datagrams successfully fragmented */
+ u_int32_t ips_ofragments; /* output fragments created */
+ u_int32_t ips_cantfrag; /* don't fragment flag was set, etc. */
+ u_int32_t ips_badoptions; /* error in option processing */
+ u_int32_t ips_noroute; /* packets discarded due to no route */
+ u_int32_t ips_badvers; /* ip version != 4 */
+ u_int32_t ips_rawout; /* total raw ip packets generated */
+ u_int32_t ips_toolong; /* ip length > max ip packet size */
+ u_int32_t ips_notmember; /* multicasts for unregistered grps */
+ u_int32_t ips_nogif; /* no match gif found */
+ u_int32_t ips_badaddr; /* invalid address on header */
+ u_int32_t ips_pktdropcntrl; /* pkt dropped, no mbufs for ctl data */
+ u_int32_t ips_rcv_swcsum; /* ip hdr swcksum (inbound), packets */
+ u_int32_t ips_rcv_swcsum_bytes; /* ip hdr swcksum (inbound), bytes */
+ u_int32_t ips_snd_swcsum; /* ip hdr swcksum (outbound), packets */
+ u_int32_t ips_snd_swcsum_bytes; /* ip hdr swcksum (outbound), bytes */
+ u_int32_t ips_adj; /* total packets trimmed/adjusted */
+ u_int32_t ips_adj_hwcsum_clr; /* hwcksum discarded during adj */
+ u_int32_t ips_rxc_collisions; /* rx chaining collisions */
+ u_int32_t ips_rxc_chained; /* rx chains */
+ u_int32_t ips_rxc_notchain; /* rx bypassed chaining */
+ u_int32_t ips_rxc_chainsz_gt2; /* rx chain size greater than 2 */
+ u_int32_t ips_rxc_chainsz_gt4; /* rx chain size greater than 4 */
+ u_int32_t ips_rxc_notlist; /* count of pkts through ip_input */
+ u_int32_t ips_raw_sappend_fail; /* sock append failed */
+
};
struct ip_linklocal_stat {
- u_long iplls_in_total;
- u_long iplls_in_badttl;
- u_long iplls_out_total;
- u_long iplls_out_badttl;
+ u_int32_t iplls_in_total;
+ u_int32_t iplls_in_badttl;
+ u_int32_t iplls_out_total;
+ u_int32_t iplls_out_badttl;
};
#ifdef KERNEL_PRIVATE
+/* forward declarations for ip_output() */
+struct ip_out_args;
+struct ip_moptions;
+#endif /* KERNEL_PRIVATE */
+
+#ifdef BSD_KERNEL_PRIVATE
/* flags passed to ip_output as last parameter */
-#define IP_FORWARDING 0x1 /* most of ip header exists */
-#define IP_RAWOUTPUT 0x2 /* raw ip header exists */
-#define IP_NOIPSEC 0x4 /* No IPSec processing */
-#define IP_ROUTETOIF SO_DONTROUTE /* bypass routing tables (0x0010) */
-#define IP_ALLOWBROADCAST SO_BROADCAST /* can send broadcast packets (0x0020) */
+#define IP_FORWARDING 0x1 /* most of ip header exists */
+#define IP_RAWOUTPUT 0x2 /* raw ip header exists */
+#define IP_NOIPSEC 0x4 /* No IPSec processing */
+#define IP_ROUTETOIF SO_DONTROUTE /* bypass routing tables (0x0010) */
+#define IP_ALLOWBROADCAST SO_BROADCAST /* can send broadcast pkts (0x0020) */
+#define IP_OUTARGS 0x100 /* has ancillary output info */
+
+#define IP_HDR_ALIGNED_P(_ip) ((((uintptr_t)(_ip)) & ((uintptr_t)3)) == 0)
+
+/*
+ * On platforms which require strict alignment (currently for anything but
+ * i386 or x86_64), this macro checks whether the pointer to the IP header
+ * is 32-bit aligned, and assert otherwise.
+ */
+#if defined(__i386__) || defined(__x86_64__)
+#define IP_HDR_STRICT_ALIGNMENT_CHECK(_ip) do { } while (0)
+#else /* !__i386__ && !__x86_64__ */
+#define IP_HDR_STRICT_ALIGNMENT_CHECK(_ip) do { \
+ if (!IP_HDR_ALIGNED_P(_ip)) { \
+ panic_plain("\n%s: Unaligned IP header %p\n", \
+ __func__, _ip); \
+ } \
+} while (0)
+#endif /* !__i386__ && !__x86_64__ */
struct ip;
struct inpcb;
struct route;
struct sockopt;
-extern struct ipstat ipstat;
-#if !defined(RANDOM_IP_ID) || RANDOM_IP_ID == 0
-extern u_short ip_id; /* ip packet ctr, for ids */
-#endif
-extern int ip_defttl; /* default IP ttl */
-extern int ipforwarding; /* ip forwarding */
+#include <net/flowadv.h>
+
+/*
+ * Extra information passed to ip_output when IP_OUTARGS is set.
+ *
+ * Upon returning an error to the caller, ip_output may indicate through
+ * ipoa_retflags any additional information regarding the error.
+ */
+struct ip_out_args {
+ unsigned int ipoa_boundif; /* boundif interface index */
+ struct flowadv ipoa_flowadv; /* flow advisory code */
+ u_int32_t ipoa_flags; /* IPOAF output flags (see below) */
+#define IPOAF_SELECT_SRCIF 0x00000001 /* src interface selection */
+#define IPOAF_BOUND_IF 0x00000002 /* boundif value is valid */
+#define IPOAF_BOUND_SRCADDR 0x00000004 /* bound to src address */
+#define IPOAF_NO_CELLULAR 0x00000010 /* skip IFT_CELLULAR */
+#define IPOAF_NO_EXPENSIVE 0x00000020 /* skip IFT_EXPENSIVE */
+#define IPOAF_AWDL_UNRESTRICTED 0x00000040 /* can send over
+ AWDL_RESTRICTED */
+#define IPOAF_QOSMARKING_ALLOWED 0x00000080 /* policy allows Fastlane DSCP marking */
+ u_int32_t ipoa_retflags; /* IPOARF return flags (see below) */
+#define IPOARF_IFDENIED 0x00000001 /* denied access to interface */
+ int ipoa_sotc; /* traffic class for Fastlane DSCP mapping */
+ int ipoa_netsvctype; /* network service type */
+};
+
+extern struct ipstat ipstat;
+extern int ip_use_randomid;
+extern u_short ip_id; /* ip packet ctr, for ids */
+extern int ip_defttl; /* default IP ttl */
+extern int ipforwarding; /* ip forwarding */
extern struct protosw *ip_protox[];
-extern struct socket *ip_rsvpd; /* reservation protocol daemon */
-extern struct socket *ip_mrouter; /* multicast routing daemon */
-extern int (*legal_vif_num)(int);
-extern u_long (*ip_mcast_src)(int);
-extern int rsvp_on;
-extern struct pr_usrreqs rip_usrreqs;
-
-int ip_ctloutput(struct socket *, struct sockopt *sopt);
-void ip_drain(void);
-void ip_freemoptions(struct ip_moptions *);
-void ip_init(void);
-extern int (*ip_mforward)(struct ip *, struct ifnet *, struct mbuf *,
- struct ip_moptions *);
-int ip_output(struct mbuf *,
- struct mbuf *, struct route *, int, struct ip_moptions *);
-int ip_output_list(struct mbuf *, int,
- struct mbuf *, struct route *, int, struct ip_moptions *);
-struct in_ifaddr *
- ip_rtaddr(struct in_addr, struct route *);
-void ip_savecontrol(struct inpcb *, struct mbuf **, struct ip *,
- struct mbuf *);
-void ip_slowtimo(void);
-struct mbuf *
- ip_srcroute(void);
-void ip_stripoptions(struct mbuf *, struct mbuf *);
-#if RANDOM_IP_ID
-u_int16_t
- ip_randomid(void);
-#endif
-int rip_ctloutput(struct socket *, struct sockopt *);
-void rip_ctlinput(int, struct sockaddr *, void *);
-void rip_init(void);
-void rip_input(struct mbuf *, int);
-int rip_output(struct mbuf *, struct socket *, u_long);
-int rip_unlock(struct socket *, int, int);
-void ipip_input(struct mbuf *, int);
-void rsvp_input(struct mbuf *, int);
-int ip_rsvp_init(struct socket *);
-int ip_rsvp_done(void);
-int ip_rsvp_vif_init(struct socket *, struct sockopt *);
-int ip_rsvp_vif_done(struct socket *, struct sockopt *);
-void ip_rsvp_force_done(struct socket *);
-
-void in_delayed_cksum(struct mbuf *m);
+extern struct pr_usrreqs rip_usrreqs;
+
+extern void ip_moptions_init(void);
+extern struct ip_moptions *ip_allocmoptions(int);
+extern int inp_getmoptions(struct inpcb *, struct sockopt *);
+extern int inp_setmoptions(struct inpcb *, struct sockopt *);
+extern void imo_addref(struct ip_moptions *, int);
+extern void imo_remref(struct ip_moptions *);
+
+struct protosw;
+struct domain;
+
+extern int ip_checkrouteralert(struct mbuf *);
+extern int ip_ctloutput(struct socket *, struct sockopt *sopt);
+extern void ip_drain(void);
+extern void ip_init(struct protosw *, struct domain *);
+extern int ip_output(struct mbuf *, struct mbuf *, struct route *, int,
+ struct ip_moptions *, struct ip_out_args *);
+extern int ip_output_list(struct mbuf *, int, struct mbuf *, struct route *,
+ int, struct ip_moptions *, struct ip_out_args *);
+extern void ip_output_checksum(struct ifnet *, struct mbuf *, int, int,
+ uint32_t *);
+extern struct in_ifaddr *ip_rtaddr(struct in_addr);
+extern int ip_savecontrol(struct inpcb *, struct mbuf **, struct ip *,
+ struct mbuf *);
+extern struct mbuf *ip_srcroute(void);
+extern void ip_stripoptions(struct mbuf *, struct mbuf *);
+extern void ip_initid(void);
+extern u_int16_t ip_randomid(void);
+extern void ip_proto_dispatch_in_wrapper(struct mbuf *, int, u_int8_t);
+extern int ip_fragment(struct mbuf *, struct ifnet *, unsigned long, int);
+
+extern void ip_setsrcifaddr_info(struct mbuf *, uint32_t, struct in_ifaddr *);
+extern void ip_setdstifaddr_info(struct mbuf *, uint32_t, struct in_ifaddr *);
+extern int ip_getsrcifaddr_info(struct mbuf *, uint32_t *, uint32_t *);
+extern int ip_getdstifaddr_info(struct mbuf *, uint32_t *, uint32_t *);
+extern int rip_ctloutput(struct socket *, struct sockopt *);
+extern void rip_ctlinput(int, struct sockaddr *, void *);
+extern void rip_init(struct protosw *, struct domain *);
+extern void rip_input(struct mbuf *, int);
+extern int rip_output(struct mbuf *, struct socket *, u_int32_t, struct mbuf *);
+extern int rip_unlock(struct socket *, int, void *);
+extern int rip_send(struct socket *, int, struct mbuf *, struct sockaddr *,
+ struct mbuf *, struct proc *);
+
+extern void tcp_in_cksum_stats(u_int32_t);
+extern void tcp_out_cksum_stats(u_int32_t);
+
+extern void udp_in_cksum_stats(u_int32_t);
+extern void udp_out_cksum_stats(u_int32_t);
+
+#if INET6
+extern void tcp_in6_cksum_stats(u_int32_t);
+extern void tcp_out6_cksum_stats(u_int32_t);
+
+extern void udp_in6_cksum_stats(u_int32_t);
+extern void udp_out6_cksum_stats(u_int32_t);
+#endif /* INET6 */
+#endif /* BSD_KERNEL_PRIVATE */
+#ifdef KERNEL_PRIVATE
+/* for PPP/PPTP */
+extern int ip_gre_output(struct mbuf *);
+typedef struct mbuf *(*gre_input_func_t)(struct mbuf *, int, int);
+extern int ip_gre_register_input(gre_input_func_t);
#endif /* KERNEL_PRIVATE */
#endif /* !_NETINET_IP_VAR_H_ */
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