/*
- * Copyright (c) 2004 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2008-2016 Apple Inc. All rights reserved.
*
- * @APPLE_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 Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * @APPLE_OSREFERENCE_LICENSE_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.
+ *
+ * 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.
- *
- * @APPLE_LICENSE_HEADER_END@
+ * 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_OSREFERENCE_LICENSE_HEADER_END@
*/
/*!
- @header kpi_protocol.h
- This header defines an API to interact with protocols in the kernel.
- The KPIs in this header file can be used to interact with protocols
- that already exist in the stack. These KPIs can be used to support
- existing protocols over media types that are not natively supported
- in the kernel, such as ATM.
+ * @header kpi_protocol.h
+ * This header defines an API to interact with protocols in the kernel.
+ * The KPIs in this header file can be used to interact with protocols
+ * that already exist in the stack. These KPIs can be used to support
+ * existing protocols over media types that are not natively supported
+ * in the kernel, such as ATM.
*/
#ifndef __KPI_PROTOCOL__
#include <sys/kernel_types.h>
#include <net/kpi_interface.h>
+#ifndef PRIVATE
+#include <Availability.h>
+#define __NKE_API_DEPRECATED __API_DEPRECATED("Network Kernel Extension KPI is deprecated", macos(10.4, 10.15.4))
+#else
+#define __NKE_API_DEPRECATED
+#endif /* PRIVATE */
__BEGIN_DECLS
-/****************************************************************************/
-/* Protocol input/inject */
-/****************************************************************************/
+/******************************************************************************/
+/* Protocol input/inject */
+/******************************************************************************/
-#ifdef KERNEL_PRIVATE
+#ifdef BSD_KERNEL_PRIVATE
/*!
- @typedef protocol_input_handler
- @discussion protocol_input_handler is called to input a packet. If
- your protocol has specified a global lock, the lock will be held
- when this funciton is called.
- @pararm protocol The protocol this packet is intended for.
- @param packet The packet that should be input.
+ * @typedef protocol_input_handler
+ * @discussion protocol_input_handler is called to input a packet. If
+ * your protocol has specified a global lock, the lock will be held
+ * when this funciton is called.
+ * @pararm protocol The protocol this packet is intended for.
+ * @param packet The packet that should be input.
*/
typedef void (*proto_input_handler)(protocol_family_t protocol, mbuf_t packet);
/*!
- @typedef proto_input_detached_handler
- @discussion proto_input_detached_handler is called to notify the
- protocol that it has been detached. When this function is
- called, the proto_input_handler will not be called again, making
- it safe to unload.
- @pararm protocol The protocol detached.
+ * @typedef proto_input_detached_handler
+ * @discussion proto_input_detached_handler is called to notify the
+ * protocol that it has been detached. When this function is
+ * called, the proto_input_handler will not be called again, making
+ * it safe to unload.
+ * @pararm protocol The protocol detached.
*/
typedef void (*proto_input_detached_handler)(protocol_family_t protocol);
/*!
- @function proto_register_input
- @discussion Allows the caller to specify the functions called when a
- packet for a protocol is received.
- @param protocol The protocol family these functions will receive
- packets for.
- @param input The function called when a packet is input.
- @result A errno error on failure.
+ * @function proto_register_input
+ * @discussion Allows the caller to specify the functions called when a
+ * packet for a protocol is received.
+ * @param protocol The protocol family these functions will receive
+ * packets for.
+ * @param input The function called when a packet is input.
+ * @param chains Input function supports packet chains.
+ * @result A errno error on failure.
*/
-errno_t proto_register_input(protocol_family_t protocol, proto_input_handler input,
- proto_input_detached_handler detached);
+extern errno_t proto_register_input(protocol_family_t protocol,
+ proto_input_handler input, proto_input_detached_handler detached,
+ int chains);
/*!
- @function proto_unregister_input
- @discussion Allows the caller to unregister the input and inject
- functions for a protocol. The input/inject functions may not be
- unregistered immediately if there is a chance they are in use.
- To notify the owner when the functions are no longer in use, the
- proto_detached_handler function will be called. It is not safe
- to unload until the proto_detached_handler is called.
- @param protocol The protocol family these functions will receive
- packets for.
- @param input The function called when a packet is input.
- @param inject The function to called when a packet is injected (not
- on the normal input path).
- @result A errno error on failure.
+ * @function proto_unregister_input
+ * @discussion Allows the caller to unregister the input and inject
+ * functions for a protocol. The input/inject functions may not be
+ * unregistered immediately if there is a chance they are in use.
+ * To notify the owner when the functions are no longer in use, the
+ * proto_detached_handler function will be called. It is not safe
+ * to unload until the proto_detached_handler is called.
+ * @param protocol The protocol family these functions will receive
+ * packets for.
*/
-void proto_unregister_input(protocol_family_t protocol);
-#endif
+extern void proto_unregister_input(protocol_family_t protocol);
+#endif /* BSD_KERNEL_PRIVATE */
/*!
- @function proto_input
- @discussion Inputs a packet on the specified protocol from the input
- path.
- @param protocol The protocol of the packet.
- @param packet The first packet in a chain of packets to be input.
- @result A errno error on failure. Unless proto_input returns zero,
- the caller is responsible for freeing the mbuf.
+ * @function proto_input
+ * @discussion Inputs a packet on the specified protocol from the input
+ * path.
+ * @param protocol The protocol of the packet.
+ * @param packet The first packet in a chain of packets to be input.
+ * @result A errno error on failure. Unless proto_input returns zero,
+ * the caller is responsible for freeing the mbuf.
*/
-errno_t proto_input(protocol_family_t protocol, mbuf_t packet);
+extern errno_t proto_input(protocol_family_t protocol, mbuf_t packet)
+__NKE_API_DEPRECATED;
/*!
- @function proto_inject
- @discussion Injects a packet on the specified protocol from
- anywhere. To avoid recursion, the protocol may need to queue the
- packet to be handled later.
- @param protocol The protocol of the packet.
- @param packet The first packet in a chain of packets to be injected.
- @result A errno error on failure. Unless proto_inject returns zero,
- the caller is responsible for freeing the mbuf.
+ * @function proto_inject
+ * @discussion Injects a packet on the specified protocol from
+ * anywhere. To avoid recursion, the protocol may need to queue the
+ * packet to be handled later.
+ * @param protocol The protocol of the packet.
+ * @param packet The first packet in a chain of packets to be injected.
+ * @result A errno error on failure. Unless proto_inject returns zero,
+ * the caller is responsible for freeing the mbuf.
*/
-errno_t proto_inject(protocol_family_t protocol, mbuf_t packet);
+extern errno_t proto_inject(protocol_family_t protocol, mbuf_t packet)
+__NKE_API_DEPRECATED;
-/****************************************************************************/
-/* Protocol plumbing */
-/****************************************************************************/
+/******************************************************************************/
+/* Protocol plumbing */
+/******************************************************************************/
/*!
- @typedef proto_plumb_handler
- @discussion proto_plumb_handler is called to attach a protocol to an
- interface. A typical protocol plumb function would fill out an
- ifnet_attach_proto_param and call ifnet_attach_protocol.
- @param ifp The interface the protocol should be attached to.
- @param protocol_family The protocol that should be attached to the
- interface.
- @result
- A non-zero value of the attach failed.
+ * @typedef proto_plumb_handler
+ * @discussion proto_plumb_handler is called to attach a protocol to an
+ * interface. A typical protocol plumb function would fill out an
+ * ifnet_attach_proto_param and call ifnet_attach_protocol.
+ * @param ifp The interface the protocol should be attached to.
+ * @param protocol The protocol that should be attached to the
+ * interface.
+ * @result
+ * A non-zero value of the attach failed.
*/
typedef errno_t (*proto_plumb_handler)(ifnet_t ifp, protocol_family_t protocol);
/*!
- @typedef proto_unplumb_handler
- @discussion proto_unplumb_handler is called to detach a protocol
- from an interface. A typical unplumb function would call
- ifnet_detach_protocol and perform any necessary cleanup.
- @param ifp The interface the protocol should be detached from.
- @param protocol_family The protocol that should be detached from the
- interface.
+ * @typedef proto_unplumb_handler
+ * @discussion proto_unplumb_handler is called to detach a protocol
+ * from an interface. A typical unplumb function would call
+ * ifnet_detach_protocol and perform any necessary cleanup.
+ * @param ifp The interface the protocol should be detached from.
+ * @param protocol The protocol that should be detached from the
+ * interface.
*/
typedef void (*proto_unplumb_handler)(ifnet_t ifp, protocol_family_t protocol);
/*!
- @function proto_register_plumber
- @discussion Allows the caller to specify the functions called when a protocol
- is attached to an interface belonging to the specified family and when
- that protocol is detached.
- @param proto_fam The protocol family these plumbing functions will
- handle.
- @param if_fam The interface family these plumbing functions will
- handle.
- @param plumb The function to call to attach the protocol to an
- interface.
- @param unplumb The function to call to detach the protocol to an
- interface, may be NULL in which case ifnet_detach_protocol will
- be used to detach the protocol.
- @result A non-zero value of the attach failed.
+ * @function proto_register_plumber
+ * @discussion Allows the caller to specify the functions called when a
+ * protocol is attached to an interface belonging to the specified
+ * family and when that protocol is detached.
+ * @param proto_fam The protocol family these plumbing functions will
+ * handle.
+ * @param if_fam The interface family these plumbing functions will
+ * handle.
+ * @param plumb The function to call to attach the protocol to an
+ * interface.
+ * @param unplumb The function to call to detach the protocol to an
+ * interface, may be NULL in which case ifnet_detach_protocol will
+ * be used to detach the protocol.
+ * @result A non-zero value of the attach failed.
*/
-errno_t proto_register_plumber(protocol_family_t proto_fam, ifnet_family_t if_fam,
- proto_plumb_handler plumb, proto_unplumb_handler unplumb);
+extern errno_t proto_register_plumber(protocol_family_t proto_fam,
+ ifnet_family_t if_fam, proto_plumb_handler plumb,
+ proto_unplumb_handler unplumb)
+__NKE_API_DEPRECATED;
/*!
- @function proto_unregister_plumber
- @discussion Unregisters a previously registered plumbing function.
- @param proto_fam The protocol family these plumbing functions
- handle.
- @param if_fam The interface family these plumbing functions handle.
+ * @function proto_unregister_plumber
+ * @discussion Unregisters a previously registered plumbing function.
+ * @param proto_fam The protocol family these plumbing functions
+ * handle.
+ * @param if_fam The interface family these plumbing functions handle.
*/
-void proto_unregister_plumber(protocol_family_t proto_fam, ifnet_family_t if_fam);
+extern void proto_unregister_plumber(protocol_family_t proto_fam,
+ ifnet_family_t if_fam)
+__NKE_API_DEPRECATED;
+
+#ifdef BSD_KERNEL_PRIVATE
+/*
+ * @function proto_plumb
+ * @discussion Plumbs 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.
+ * @param protocol_family The protocol family.
+ * @param ifp The interface to plumb the protocol to.
+ * @result 0: No error.
+ * ENOENT: No module was registered.
+ * Other: Error returned by the attach_proto function
+ */
+extern errno_t proto_plumb(protocol_family_t protocol_family, ifnet_t ifp);
+
+/*
+ * @function proto_unplumb
+ * @discussion Unplumbs 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().
+ * @param protocol_family The protocol family.
+ * @param ifp The interface to unplumb the protocol from.
+ * @result 0: No error.
+ * ENOENT: No module was registered.
+ * Other: Error returned by the attach_proto function
+ */
+extern errno_t proto_unplumb(protocol_family_t protocol_family, ifnet_t ifp);
+
+__private_extern__ void
+proto_kpi_init(void);
+#endif /* BSD_KERNEL_PRIVATE */
__END_DECLS
+#undef __NKE_API_DEPRECATED
+#endif /* __KPI_PROTOCOL__ */
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