/*
* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource 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.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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 OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * 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_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* Copyright (c) 1999 Apple Computer, Inc.
* Data Link Inteface Layer
* Author: Ted Walker
*/
-
-
#ifndef DLIL_H
#define DLIL_H
-#include <sys/appleapiopts.h>
-
-#if __STDC__
-
-struct ifnet;
-struct mbuf;
-struct ether_header;
-
-#endif
-
+#ifdef KERNEL
-#ifdef __APPLE_API_UNSTABLE
-#define DLIL_LAST_FILTER -1
-#define DLIL_NULL_FILTER -2
-
-#define DLIL_WAIT_FOR_FREE -2
-
-#define DLIL_BLUEBOX 1
-
-
-
-#include <net/if.h>
-#include <net/if_var.h>
-#include <sys/kern_event.h>
+#include <sys/kernel_types.h>
+#include <net/kpi_interface.h>
enum {
BPF_TAP_DISABLE,
BPF_TAP_INPUT_OUTPUT
};
-
-struct dl_tag_attr_str {
- u_long dl_tag;
- short if_flags;
- short if_unit;
- u_long if_family;
- u_long protocol_family;
-};
-
-
-struct dlil_pr_flt_str {
- caddr_t cookie;
-
- int (*filter_dl_input)(caddr_t cookie,
- struct mbuf **m,
- char **frame_header,
- struct ifnet **ifp);
-
-
- int (*filter_dl_output)(caddr_t cookie,
- struct mbuf **m,
- struct ifnet **ifp,
- struct sockaddr **dest,
- char *dest_linkaddr,
- char *frame_type);
-
- int (*filter_dl_event)(caddr_t cookie,
- struct kern_event_msg *event_msg);
-
- int (*filter_dl_ioctl)(caddr_t cookie,
- struct ifnet *ifp,
- u_long ioctl_cmd,
- caddr_t ioctl_arg);
-
- int (*filter_detach)(caddr_t cookie);
- u_long reserved[2];
-};
-
-struct dlil_if_flt_str {
- caddr_t cookie;
- int (*filter_if_input)(caddr_t cookie,
- struct ifnet **ifnet_ptr,
- struct mbuf **mbuf_ptr,
- char **frame_ptr);
-
- int (*filter_if_event)(caddr_t cookie,
- struct ifnet **ifnet_ptr,
- struct kern_event_msg **event_msg_ptr);
-
- int (*filter_if_output)(caddr_t cookie,
- struct ifnet **ifnet_ptr,
- struct mbuf **mbuf_ptr);
-
-
- int (*filter_if_ioctl)(caddr_t cookie,
- struct ifnet *ifnet_ptr,
- u_long ioctl_code_ptr,
- caddr_t ioctl_arg_ptr);
-
- int (*filter_if_free)(caddr_t cookie,
- struct ifnet *ifnet_ptr);
-
- int (*filter_detach)(caddr_t cookie);
- u_long reserved[2];
-};
-
-
-#define DLIL_PR_FILTER 1
-#define DLIL_IF_FILTER 2
-
-
-
-typedef int (*dl_input_func)(struct mbuf *m, char *frame_header,
- struct ifnet *ifp, u_long dl_tag, int sync_ok);
-typedef int (*dl_pre_output_func)(struct ifnet *ifp,
- struct mbuf **m,
- struct sockaddr *dest,
- caddr_t route_entry,
- char *frame_type,
- char *dst_addr,
- u_long dl_tag);
-
-typedef int (*dl_event_func)(struct kern_event_msg *event,
- u_long dl_tag);
-
-typedef int (*dl_offer_func)(struct mbuf *m, char *frame_header);
-typedef int (*dl_ioctl_func)(u_long dl_tag,
- struct ifnet *ifp,
- u_long ioctl_cmd,
- caddr_t ioctl_arg);
-
-
-
-#ifdef __APPLE_API_PRIVATE
-struct dlil_filterq_entry {
- TAILQ_ENTRY(dlil_filterq_entry) que;
- u_long filter_id;
- int type;
- union {
- struct dlil_if_flt_str if_filter;
- struct dlil_pr_flt_str pr_filter;
- } variants;
-};
-#else
-struct dlil_filterq_entry;
-#endif /* __APPLE_API_PRIVATE */
-
-TAILQ_HEAD(dlil_filterq_head, dlil_filterq_entry);
-
-
-struct if_proto {
- TAILQ_ENTRY(if_proto) next;
- u_long dl_tag;
- struct dlil_filterq_head pr_flt_head;
- struct ifnet *ifp;
- dl_input_func dl_input;
- dl_pre_output_func dl_pre_output;
- dl_event_func dl_event;
- dl_offer_func dl_offer;
- dl_ioctl_func dl_ioctl;
- u_long protocol_family;
- u_long reserved[4];
-
-};
-
-#ifdef __APPLE_API_PRIVATE
-TAILQ_HEAD(dlil_proto_head, if_proto);
-
-struct dlil_tag_list_entry {
- TAILQ_ENTRY(dlil_tag_list_entry) next;
- struct ifnet *ifp;
- u_long dl_tag;
-};
-#endif /* __APPLE_API_PRIVATE */
-
-
-#ifdef __APPLE_API_OBSOLETE
-/* Obsolete types */
-#define DLIL_DESC_RAW 1
-#define DLIL_DESC_802_2 2
-#define DLIL_DESC_802_2_SNAP 3
-/*
- * DLIL_DESC_RAW - obsolete type, data in variants.bitmask or native_type
- * if variants.bitmask.proto_id_length, native_type in host
- * byte order.
- * DLIL_DESC_802_2 - obsolete, data in variants.desc_802_2
- * DLIL_DESC_802_2_SNAP - obsolete, data in variants.desc_802_2_SNAP
- * protocol field in host byte order
- */
-#endif /* __APPLE_API_OBSOLETE */
-
-/* Ehernet specific types */
+/* Ethernet specific types */
#define DLIL_DESC_ETYPE2 4
#define DLIL_DESC_SAP 5
#define DLIL_DESC_SNAP 6
* variants.native_type_length.
*/
-struct dlil_demux_desc {
- TAILQ_ENTRY(dlil_demux_desc) next;
-
- int type;
- u_char *native_type;
-
- union {
- /* Structs in this union are obsolete. They exist for binary compatability only */
- /* Only the native_type_length is used */
- struct {
- u_long proto_id_length; /* IN LONGWORDS!!! */
- u_char *proto_id; /* No longer supported by Ethernet family */
- u_char *proto_id_mask;
- } bitmask;
-
- struct {
- u_char dsap;
- u_char ssap;
- u_char control_code;
- u_char pad;
- } desc_802_2;
-
- struct {
- u_char dsap; /* Ignored, assumed to be 0xAA */
- u_char ssap; /* Ignored, assumed to be 0xAA */
- u_char control_code; /* Ignored, assumed to be 0x03 */
- u_char org[3];
- u_short protocol_type; /* In host byte order */
- } desc_802_2_SNAP;
-
- /* Length of data pointed to by native_type, must be set correctly */
- u_int32_t native_type_length;
- } variants;
-};
-
-TAILQ_HEAD(ddesc_head_str, dlil_demux_desc);
-
-
-struct dlil_proto_reg_str {
- struct ddesc_head_str demux_desc_head;
- u_long interface_family;
- u_long protocol_family;
- short unit_number;
- int default_proto; /* 0 or 1 */
- dl_input_func input;
- dl_pre_output_func pre_output;
- dl_event_func event;
- dl_offer_func offer;
- dl_ioctl_func ioctl;
- u_long reserved[4];
-};
-
-
-int dlil_attach_interface_filter(struct ifnet *ifnet_ptr,
- struct dlil_if_flt_str *interface_filter,
- u_long *filter_id,
- int insertion_point);
-
-int
-dlil_input(struct ifnet *ifp, struct mbuf *m_head, struct mbuf *m_tail);
-
-int
-dlil_output(u_long dl_tag,
- struct mbuf *m,
- caddr_t route,
- struct sockaddr *dest,
- int raw);
-
-
-int
-dlil_ioctl(u_long proto_family,
- struct ifnet *ifp,
- u_long ioctl_code,
- caddr_t ioctl_arg);
-
-int
-dlil_attach_protocol(struct dlil_proto_reg_str *proto,
- u_long *dl_tag);
-
-int
-dlil_detach_protocol(u_long dl_tag);
-
-int
-dlil_if_attach(struct ifnet *ifp);
-
-int
-dlil_attach_protocol_filter(u_long dl_tag,
- struct dlil_pr_flt_str *proto_filter,
- u_long *filter_id,
- int insertion_point);
-int
-dlil_detach_filter(u_long filter_id);
-
-struct dlil_ifmod_reg_str {
- int (*add_if)(struct ifnet *ifp);
- int (*del_if)(struct ifnet *ifp);
- int (*add_proto)(struct ddesc_head_str *demux_desc_head,
- struct if_proto *proto, u_long dl_tag);
- int (*del_proto)(struct if_proto *proto, u_long dl_tag);
- int (*ifmod_ioctl)(struct ifnet *ifp, u_long ioctl_cmd, caddr_t data);
- int (*shutdown)();
- int (*init_if)(struct ifnet *ifp);
- u_long reserved[3];
-};
+#ifdef KERNEL_PRIVATE
+#include <net/if.h>
+#include <net/if_var.h>
+#include <sys/kern_event.h>
+#include <kern/thread.h>
+#include <kern/locks.h>
-int dlil_reg_if_modules(u_long interface_family,
- struct dlil_ifmod_reg_str *ifmod_reg);
+#if __STDC__
-struct dlil_protomod_reg_str {
- /*
- * attach the protocol to the interface and return the dl_tag
- */
- int (*attach_proto)(struct ifnet *ifp, u_long *dl_tag);
+struct ifnet;
+struct mbuf;
+struct ether_header;
+struct sockaddr_dl;
- /*
- * detach the protocol from the interface.
- * this is optionnal. If it is NULL, DLIL will use 0 default detach function.
- */
- int (*detach_proto)(struct ifnet *ifp, u_long dl_tag);
+#endif
- /*
- * reserved for future use. MUST be NULL.
- */
- u_long reserved[4];
+#ifdef BSD_KERNEL_PRIVATE
+struct ifnet_stat_increment_param;
+struct iff_filter;
+
+struct dlil_threading_info {
+ mbuf_t mbuf_head; /* start of mbuf list from if */
+ mbuf_t mbuf_tail;
+ u_int32_t mbuf_count;
+ boolean_t net_affinity; /* affinity set is available */
+ u_int32_t input_waiting; /* DLIL condition of thread */
+ struct thread *input_thread; /* thread data for this input */
+ struct thread *workloop_thread; /* current workloop thread */
+ u_int32_t tag; /* current affinity tag */
+ lck_mtx_t *input_lck;
+ lck_grp_t *lck_grp; /* lock group (for lock stats) */
+ char input_name[32];
+#if IFNET_INPUT_SANITY_CHK
+ u_int32_t input_wake_cnt; /* number of times the thread was awaken with packets to process */
+ u_long input_mbuf_cnt; /* total number of mbuf packets processed by this thread */
+#endif
};
-/*
-
-Function : dlil_reg_proto_module
-
- A DLIL protocol module is a piece of code that know how to handle a certain type
- of protocol (PF_INET, PF_INET6, ...) for a certain family of interface (APPLE_IF_FAM_ETHERNET,
- APPLE_IF_FAM_PPP, ...).
-
- dlil_reg_proto_module() allows the registration of such a protocol/interface handler before any
- interface is attached.
- Typically, the attach and detach function of the protocol handler will call
- dlil_{attach/detach}_protocol with the parameter specific to the protocol.
-
- The goal of this modules is to insulate the actual protocol (IP, IPv6) from the DLIL details.
-
-Parameters :
- 'protocol_family' is PF_INET, PF_INET6, ...
- 'interface_family' is APPLE_IF_FAM_ETHERNET, APPLE_IF_FAM_PPP, ...
- 'protomod_reg' is the protocol registration structure.
- 'attach_proto' funtion is mandatory.
- 'detach_proto' funtion is optional (DLIL will manage it).
-
-Return code :
-
-0 :
-
- No error.
-
-ENOMEM:
-
- No memory can be allocated for internal data structure.
-
-EEXIST:
-
- The protocol family has already been registered for this interface family.
-
-EINVAL:
-
- The dlil_protomod_reg_str structure contains incorrect values.
-
-*/
-
-int dlil_reg_proto_module(u_long protocol_family, u_long interface_family,
- struct dlil_protomod_reg_str *protomod_reg);
-
-/*
-
-Function : dlil_dereg_proto_module
-
- dlil_dereg_proto_module() will unregister the protocol module previously
- registered with dlil_dereg_proto_module().
-
- There is no restriction when to call it.
- Interfaces or protoco can be attached, it will not prevent the deregistration of the module.
-
-Parameters :
- 'protocol_family' is PF_INET, PF_INET6, ...
- 'interface_family' is APPLE_IF_FAM_ETHERNET, APPLE_IF_FAM_PPP, ...
-
-Return code :
-
-0 :
-
- No error.
-
-ENOENT:
-
- No module was registered..
-
-*/
-
-int dlil_dereg_proto_module(u_long protocol_family, u_long interface_family);
-
-/*
-
-Function : dlil_plumb_protocol
-
- dlil_plumb_protocol() will plumb a protocol to an actual interface.
- This will find a registered protocol module and call its attach function.
- The module will typically call dlil_attach_protocol with the appropriate parameters,
- and will return the dl_tag of the attachement.
- It is up to the caller to handle the dl_tag.
- Some protocol (IPv4) will stick it in their internal structure for future use.
- Some other protocol (IPv6) can ignore the dl_tag.
-
-Parameters :
- 'protocol_family' is PF_INET, PF_INET6, ...
- 'ifp' is the interface to plumb the protocol to.
- 'dl_tag' is the tag returned from the succesful attachement.
-
-Return code :
-
-0 :
-
- No error.
-
-ENOENT:
-
- No module was registered.
-
-other:
-
- Error returned by the attach_proto function
-
-*/
-int dlil_plumb_protocol(u_long protocol_family, struct ifnet *ifp, u_long *dl_tag);
-
-/*
-
-Function : dlil_unplumb_protocol
-
- dlil_unplumb_protocol() will unplumb a protocol from an interface.
- This will find a registered protocol module and call its detach function.
- The module will typically call dlil_detach_protocol with the appropriate parameters.
- If no module is found, this function will call dlil_detach_protocol directly.
-
-Parameters :
- 'protocol_family' is PF_INET, PF_INET6, ...
- 'ifp' is APPLE_IF_FAM_ETHERNET, APPLE_IF_FAM_PPP, ...
-
-Return code :
-
-0 :
-
- No error.
-
-ENOENT:
-
- No module was registered.
-
-other:
-
- Error returned by the attach_proto function
-
+/*
+ The following are shared with kpi_protocol.c so that it may wakeup
+ the input thread to run through packets queued for protocol input.
*/
-int dlil_unplumb_protocol(u_long protocol_family, struct ifnet *ifp);
-
-int
-dlil_inject_if_input(struct mbuf *m, char *frame_header, u_long from_id);
-
-int
-dlil_inject_pr_input(struct mbuf *m, char *frame_header, u_long from_id);
+#define DLIL_INPUT_RUNNING 0x80000000
+#define DLIL_INPUT_WAITING 0x40000000
+#define DLIL_PROTO_REGISTER 0x20000000
+#define DLIL_PROTO_WAITING 0x10000000
+#define DLIL_INPUT_TERMINATE 0x08000000
-int
-dlil_inject_pr_output(struct mbuf *m,
- struct sockaddr *dest,
- int raw,
- char *frame_type,
- char *dst_linkaddr,
- u_long from_id);
+void dlil_init(void);
-int
-dlil_inject_if_output(struct mbuf *m, u_long from_id);
+errno_t dlil_set_bpf_tap(ifnet_t ifp, bpf_tap_mode mode,
+ bpf_packet_func callback);
-int
-dlil_find_dltag(u_long if_family, short unit, u_long proto_family, u_long *dl_tag);
-
-
-int
-dlil_event(struct ifnet *ifp, struct kern_event_msg *event);
-
-int dlil_dereg_if_modules(u_long interface_family);
+/*
+ * Send arp internal bypasses the check for
+ * IPv4LL.
+ */
+errno_t
+dlil_send_arp_internal(
+ ifnet_t ifp,
+ u_int16_t arpop,
+ const struct sockaddr_dl* sender_hw,
+ const struct sockaddr* sender_proto,
+ const struct sockaddr_dl* target_hw,
+ const struct sockaddr* target_proto);
int
-dlil_if_detach(struct ifnet *ifp);
-
+dlil_output(
+ ifnet_t ifp,
+ protocol_family_t proto_family,
+ mbuf_t packetlist,
+ void *route,
+ const struct sockaddr *dest,
+ int raw);
+
+errno_t
+dlil_resolve_multi(
+ struct ifnet *ifp,
+ const struct sockaddr *proto_addr,
+ struct sockaddr *ll_addr,
+ size_t ll_len);
+
+errno_t
+dlil_send_arp(
+ ifnet_t ifp,
+ u_int16_t arpop,
+ const struct sockaddr_dl* sender_hw,
+ const struct sockaddr* sender_proto,
+ const struct sockaddr_dl* target_hw,
+ const struct sockaddr* target_proto);
+
+int dlil_attach_filter(ifnet_t ifp, const struct iff_filter *if_filter,
+ interface_filter_t *filter_ref);
+void dlil_detach_filter(interface_filter_t filter);
+int dlil_detach_protocol(ifnet_t ifp, u_long protocol);
+extern void dlil_proto_unplumb_all(ifnet_t);
+
+#endif /* BSD_KERNEL_PRIVATE */
+
+void
+dlil_post_msg(struct ifnet *ifp,u_long event_subclass, u_long event_code,
+ struct net_event_data *event_data, u_long event_data_len);
/*
+ * dlil_if_acquire is obsolete. Use ifnet_allocate.
+ */
-Function : dlil_if_acquire
-
- DLIL manages the list of ifnet interfaces allocated using the dlil_if_acquire
- function. This list if not the same as the list of attached interfaces,
- visible with ifconfig.
- This list contains attached as well as detached interfaces.
- Detached interfaces are kept in the list to prevent the kernel from crashing
- by using an old ifp.
-
- if it succeeds, dlil_if_acquire returns an ifnet data structure.
- This ifnet can either be a new allocated block of memory, or an ifnet
- that already existed and that DLIL has found in its list of unused
- interface and that matches the family/uniqueid tuple.
-
- dlil_if_acquire can fail if the requested interface is already in use,
- or if no memory is available to create a new interface.
-
- The typical sequence of call for a driver will be :
- dlil_if_acquire(... &ifp)
- ... Fill in the ifnet ...
- dlil_if_attach(ifp)
- ... Driver work ...
- dlil_if_detach(ifp)
- dlil_if_release(ifp)
-
- Important : ifnet allocated by DLIL are managed by DLIL. DLIL takes care
- of them, and keeps them until a driver wants to reuse them, but DLIL may
- also decide to free them when not in use by a driver.
-
- Note : the structure returned will actually be large enough to contain
- an arpcom structure (ifnet + ethernet) structure.
- Drivers cannot extend the structure and must to store their private
- information in if_sofc and if_private.
-
-Parameters :
- 'family' uniquely identifies DLIL interface family.
- 'uniqueid' is a unique identifier for that interface, managed by the
- driver (for example MAC address for ethernet).
- 'uniqueid_len' is the length of the unique id.
- 'ifp' contains on output the allocated ifnet.
-
-Return code :
-
-0 :
-
- If an ifnet matching the uniqueid is found, the matching ifnet is returned
- in ifp and the flags IFEF_REUSE and IF_INUSE are set in the if_eflags.
- The fields in the ifnet are NOT zeroed and may contain old values that
- the driver can reuse. [They are not necessarily the values that were
- there when the driver released the ifnet, as protocol might have
- continued to update them].
-
- If no matching ifnet is found, a new structure is allocated and returned
- in ifp with all fields initialized to 0.
- The flag IF_INUSE is set in the if_eflags. IFEF_REUSE is NOT set.
- dlil_if_acquire will copy the uniqueid and keep it for matching purpose.
-
- If 'uniqueid' is NULL, then dlil_if_acquire will return the first
- ifnet that contains a null uniqueid for that family, with the flags
- IFEF_REUSE and IF_INUSE set.
- If no ifnet is available, a new one will be created.
-
-ENOMEM:
-
- If no matching interface is found, and no memory can be allocated,
- dlil_if_acquire will return ENOMEM.
-
-
-EBUSY:
-
- If the unique id matches the id of an interface currently in use,
- dlil_if_acquire will return EBUSY.
- An interface 'in use' is an allocated interface, not necessarily attached.
-
-*/
-
-int dlil_if_acquire(u_long family, void *uniqueid, size_t uniqueid_len,
+int dlil_if_acquire(u_long family, const void *uniqueid, size_t uniqueid_len,
struct ifnet **ifp);
/*
-
-Function : dlil_if_release
-
- dlil_if_release will transfer control of the ifnet to DLIL.
- DLIL will keep the interface in its list, marking it unused.
- The fields will be left in their current state, so the driver can reuse
- the ifnet later, by calling dlil_if_acquire.
- The if_eflags IF_INUSE will be cleared.
- The fields if_output, if_ioctl, if_free and if_set_bpf_tap will be changed
- to point to DLIL private functions.
- After calling dlil_if_acquire, the driver can safely terminate and
- unload if necessary.
- Note : if the call to dlil_if_detach returns DLIL_WAIT_FOR_FREE, the
- driver can safely ignore it and call dlil_if_release.
-
-Parameters :
- ifp is the pointer to the ifnet to release.
-
-*/
+ * dlil_if_release is obsolete. The equivalent is called automatically when
+ * an interface is detached.
+ */
void dlil_if_release(struct ifnet *ifp);
-#endif /* __APPLE_API_UNSTABLE */
+#endif /* KERNEL_PRIVATE */
+#endif /* KERNEL */
#endif /* DLIL_H */
projects / apple / xnu.git / blobdiff