[apple/xnu.git] / bsd / net / network_agent.h

/*
 * Copyright (c) 2014-2017 Apple Inc. All rights reserved.
 *
 * @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, 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@
 */

#ifndef	_NETAGENT_H_
#define	_NETAGENT_H_
#include <net/net_kev.h>

#ifdef PRIVATE

#include <netinet/in.h>
#include <sys/socket.h>

#ifdef BSD_KERNEL_PRIVATE
#include <stdbool.h>

errno_t netagent_init(void);
#endif
/*
 * Name registered by the Network Agent kernel control
 */
#define	NETAGENT_CONTROL_NAME "com.apple.net.netagent"

struct netagent_message_header {
	u_int8_t		message_type;
	u_int8_t		message_flags;
	u_int32_t		message_id;
	u_int32_t		message_error;
	u_int32_t		message_payload_length;
};

struct netagent_trigger_message {
	u_int32_t		trigger_flags;
	pid_t			trigger_pid;
	uuid_t			trigger_proc_uuid;
};

struct netagent_client_message {
	uuid_t			client_id;
};

struct netagent_assign_nexus_message {
	uuid_t			assign_client_id;
	u_int8_t		assign_necp_results[0];
};

#define	NETAGENT_MESSAGE_TYPE_REGISTER			1	// Pass netagent to set, no return value
#define	NETAGENT_MESSAGE_TYPE_UNREGISTER		2	// No value, no return value
#define	NETAGENT_MESSAGE_TYPE_UPDATE			3	// Pass netagent to update, no return value
#define	NETAGENT_MESSAGE_TYPE_GET				4	// No value, return netagent
#define	NETAGENT_MESSAGE_TYPE_TRIGGER			5	// Kernel initiated, no reply expected
#define	NETAGENT_MESSAGE_TYPE_ASSERT			6	// Deprecated
#define	NETAGENT_MESSAGE_TYPE_UNASSERT			7	// Deprecated
#define	NETAGENT_MESSAGE_TYPE_TRIGGER_ASSERT	8	// Kernel initiated, no reply expected
#define	NETAGENT_MESSAGE_TYPE_TRIGGER_UNASSERT	9	// Kernel initiated, no reply expected
#define	NETAGENT_MESSAGE_TYPE_REQUEST_NEXUS		10	// Kernel initiated, struct netagent_client_message
#define	NETAGENT_MESSAGE_TYPE_ASSIGN_NEXUS		11	// Pass struct netagent_assign_nexus_message
#define	NETAGENT_MESSAGE_TYPE_CLOSE_NEXUS		12	// Kernel initiated, struct netagent_client_message
#define	NETAGENT_MESSAGE_TYPE_CLIENT_TRIGGER	13	// Kernel initiated, struct netagent_client_message
#define	NETAGENT_MESSAGE_TYPE_CLIENT_ASSERT		14	// Kernel initiated, struct netagent_client_message
#define	NETAGENT_MESSAGE_TYPE_CLIENT_UNASSERT	15	// Kernel initiated, struct netagent_client_message

#define	NETAGENT_OPTION_TYPE_REGISTER			NETAGENT_MESSAGE_TYPE_REGISTER		// Pass netagent to set, no return value
#define	NETAGENT_OPTION_TYPE_UNREGISTER			NETAGENT_MESSAGE_TYPE_UNREGISTER	// No value, no return value
#define	NETAGENT_OPTION_TYPE_UPDATE				NETAGENT_MESSAGE_TYPE_UPDATE		// Pass netagent to update, no return value
#define NETAGENT_OPTION_TYPE_ASSIGN_NEXUS		NETAGENT_MESSAGE_TYPE_ASSIGN_NEXUS	// Pass struct netagent_assign_nexus_message
#define	NETAGENT_OPTION_TYPE_USE_COUNT			16									// Pass use count to set, get current use count
#define	NETAGENT_MESSAGE_TYPE_ABORT_NEXUS		17	// Kernel private

#define	NETAGENT_MESSAGE_FLAGS_RESPONSE			0x01	// Used for acks, errors, and query responses

#define	NETAGENT_MESSAGE_ERROR_NONE			0
#define	NETAGENT_MESSAGE_ERROR_INTERNAL			1
#define	NETAGENT_MESSAGE_ERROR_UNKNOWN_TYPE		2
#define	NETAGENT_MESSAGE_ERROR_INVALID_DATA		3
#define	NETAGENT_MESSAGE_ERROR_NOT_REGISTERED		4
#define	NETAGENT_MESSAGE_ERROR_ALREADY_REGISTERED	5
#define	NETAGENT_MESSAGE_ERROR_CANNOT_UPDATE		6
#define	NETAGENT_MESSAGE_ERROR_CANNOT_ASSIGN		7

#define NETAGENT_DOMAINSIZE		32
#define NETAGENT_TYPESIZE		32
#define NETAGENT_DESCSIZE		128

#define NETAGENT_MAX_DATA_SIZE	4096

#define NETAGENT_FLAG_REGISTERED		0x0001	// Agent is registered
#define NETAGENT_FLAG_ACTIVE			0x0002	// Agent is active
#define NETAGENT_FLAG_KERNEL_ACTIVATED		0x0004	// Agent can be activated by kernel activity
#define NETAGENT_FLAG_USER_ACTIVATED		0x0008	// Agent can be activated by system call (netagent_trigger)
#define NETAGENT_FLAG_VOLUNTARY			0x0010	// Use of agent is optional
#define NETAGENT_FLAG_SPECIFIC_USE_ONLY		0x0020	// Agent should only be used and activated when specifically required
#define NETAGENT_FLAG_NETWORK_PROVIDER		0x0040 // Agent provides network access
#define NETAGENT_FLAG_NEXUS_PROVIDER		0x0080 // Agent provides a skywalk nexus
#define NETAGENT_FLAG_SUPPORTS_BROWSE		0x0100 // Assertions will cause agent to fill in browse endpoints

#define NETAGENT_NEXUS_MAX_REQUEST_TYPES			16
#define NETAGENT_NEXUS_MAX_RESOLUTION_TYPE_PAIRS	16

#define NETAGENT_NEXUS_FRAME_TYPE_UNKNOWN		0
#define NETAGENT_NEXUS_FRAME_TYPE_LINK			1
#define NETAGENT_NEXUS_FRAME_TYPE_INTERNET		2
#define NETAGENT_NEXUS_FRAME_TYPE_TRANSPORT		3
#define NETAGENT_NEXUS_FRAME_TYPE_APPLICATION	4

#define NETAGENT_NEXUS_ENDPOINT_TYPE_ADDRESS	1
#define NETAGENT_NEXUS_ENDPOINT_TYPE_HOST		2
#define NETAGENT_NEXUS_ENDPOINT_TYPE_BONJOUR	3

#define NETAGENT_NEXUS_FLAG_SUPPORTS_USER_PACKET_POOL	0x1
#define NETAGENT_NEXUS_FLAG_ASSERT_UNSUPPORTED			0x2 // No calls to assert the agent are required

struct netagent_nexus {
	u_int32_t	frame_type;
	u_int32_t	endpoint_assignment_type;
	u_int32_t	endpoint_request_types[NETAGENT_NEXUS_MAX_REQUEST_TYPES];
	u_int32_t	endpoint_resolution_type_pairs[NETAGENT_NEXUS_MAX_RESOLUTION_TYPE_PAIRS * 2];
	u_int32_t	nexus_flags;
};

#define NETAGENT_TRIGGER_FLAG_USER		0x0001	// Userspace triggered agent
#define NETAGENT_TRIGGER_FLAG_KERNEL		0x0002	// Kernel triggered agent

struct kev_netagent_data {
	uuid_t		netagent_uuid;
};

// To be used with kernel control socket
struct netagent {
	uuid_t		netagent_uuid;
	char		netagent_domain[NETAGENT_DOMAINSIZE];
	char		netagent_type[NETAGENT_TYPESIZE];
	char		netagent_desc[NETAGENT_DESCSIZE];
	u_int32_t	netagent_flags;
	u_int32_t	netagent_data_size;
	u_int8_t	netagent_data[0];
};

// To be used with SIOCGAGENTDATA
struct netagent_req {
	uuid_t		netagent_uuid;
	char		netagent_domain[NETAGENT_DOMAINSIZE];
	char		netagent_type[NETAGENT_TYPESIZE];
	char		netagent_desc[NETAGENT_DESCSIZE];
	u_int32_t	netagent_flags;
	u_int32_t	netagent_data_size;
	u_int8_t	*netagent_data;
};

// To be used with SIOCGAGENTLIST
struct netagentlist_req {
	u_int32_t       data_size;
	u_int8_t        *data;
};
#ifdef BSD_KERNEL_PRIVATE
int netagent_ioctl(u_long cmd, caddr_t data);

struct netagent_req32 {
	uuid_t		netagent_uuid;
	char		netagent_domain[NETAGENT_DOMAINSIZE];
	char		netagent_type[NETAGENT_TYPESIZE];
	char		netagent_desc[NETAGENT_DESCSIZE];
	u_int32_t	netagent_flags;
	u_int32_t	netagent_data_size;
	user32_addr_t	netagent_data;
};
struct netagent_req64 {
	uuid_t		netagent_uuid;
	char		netagent_domain[NETAGENT_DOMAINSIZE];
	char		netagent_type[NETAGENT_TYPESIZE];
	char		netagent_desc[NETAGENT_DESCSIZE];
	u_int32_t	netagent_flags;
	u_int32_t	netagent_data_size;
	user64_addr_t	netagent_data __attribute__((aligned(8)));
};
struct netagentlist_req32 {
	u_int32_t       data_size;
	user32_addr_t   data;
};
struct netagentlist_req64 {
	u_int32_t       data_size;
	user64_addr_t   data __attribute__((aligned(8)));
};

struct necp_client_nexus_parameters;

// Kernel accessors
extern void netagent_post_updated_interfaces(uuid_t uuid); // To be called from interface ioctls

extern u_int32_t netagent_get_flags(uuid_t uuid);

extern u_int32_t netagent_get_generation(uuid_t uuid);

extern bool netagent_get_agent_domain_and_type(uuid_t uuid, char *domain, char *type);

extern int netagent_kernel_trigger(uuid_t uuid);

extern int netagent_client_message(uuid_t agent_uuid, uuid_t necp_client_uuid, pid_t pid, u_int8_t message_type);

extern int netagent_client_message_with_params(uuid_t agent_uuid,
											   uuid_t necp_client_uuid,
											   pid_t pid,
											   u_int8_t message_type,
											   struct necp_client_nexus_parameters *parameters,
											   void **assigned_results,
											   size_t *assigned_results_length);

extern int netagent_copyout(uuid_t uuid, user_addr_t user_addr, u_int32_t user_size);


// Kernel agent management

typedef void * netagent_session_t;

struct netagent_nexus_agent {
	struct netagent				agent;
	struct netagent_nexus		nexus_data;
};

#define	NETAGENT_EVENT_TRIGGER					NETAGENT_MESSAGE_TYPE_CLIENT_TRIGGER
#define	NETAGENT_EVENT_ASSERT					NETAGENT_MESSAGE_TYPE_CLIENT_ASSERT
#define	NETAGENT_EVENT_UNASSERT					NETAGENT_MESSAGE_TYPE_CLIENT_UNASSERT
#define	NETAGENT_EVENT_NEXUS_FLOW_INSERT			NETAGENT_MESSAGE_TYPE_REQUEST_NEXUS
#define	NETAGENT_EVENT_NEXUS_FLOW_REMOVE			NETAGENT_MESSAGE_TYPE_CLOSE_NEXUS
#define	NETAGENT_EVENT_NEXUS_FLOW_ABORT				NETAGENT_MESSAGE_TYPE_ABORT_NEXUS

typedef errno_t (*netagent_event_f)(u_int8_t event, uuid_t necp_client_uuid, pid_t pid, void *context, struct necp_client_nexus_parameters *parameters, void **assigned_results, size_t *assigned_results_length);

extern netagent_session_t netagent_create(netagent_event_f event_handler, void *handle);

extern void netagent_destroy(netagent_session_t session);

extern errno_t netagent_register(netagent_session_t session, struct netagent *agent);

extern errno_t netagent_update(netagent_session_t session, struct netagent *agent);

extern errno_t netagent_unregister(netagent_session_t session);

extern errno_t netagent_assign_nexus(netagent_session_t _session,
									 uuid_t necp_client_uuid,
									 void *assign_message,
									 size_t assigned_results_length); // Length of assigned_results_length

extern errno_t netagent_update_flow_protoctl_event(netagent_session_t _session,
												   uuid_t client_id,
												   uint32_t protoctl_event_code,
												   uint32_t protoctl_event_val,
												   uint32_t protoctl_event_tcp_seq_number);

extern int netagent_use(uuid_t agent_uuid, uint64_t *out_use_count);

#endif /* BSD_KERNEL_PRIVATE */

#ifndef KERNEL
extern int netagent_trigger(uuid_t agent_uuid, size_t agent_uuidlen);
#endif /* !KERNEL */

#endif /* PRIVATE */

#endif /* _NETAGENT_H_ */
Commit	Line	Data
3e170ce0	1	/*
5ba3f43e	2	* Copyright (c) 2014-2017 Apple Inc. All rights reserved.
3e170ce0 A	3	*
	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
	5	*
	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
	14	*
	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
	25	*
	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
	27	*/
	28
	29	#ifndef _NETAGENT_H_
	30	#define _NETAGENT_H_
39037602 A	31	#include <net/net_kev.h>
	32
	33	#ifdef PRIVATE
3e170ce0 A	34
	35	#include <netinet/in.h>
	36	#include <sys/socket.h>
	37
	38	#ifdef BSD_KERNEL_PRIVATE
	39	#include <stdbool.h>
	40
	41	errno_t netagent_init(void);
	42	#endif
3e170ce0 A	43	/*
	44	* Name registered by the Network Agent kernel control
	45	*/
	46	#define NETAGENT_CONTROL_NAME "com.apple.net.netagent"
	47
	48	struct netagent_message_header {
	49	u_int8_t message_type;
	50	u_int8_t message_flags;
	51	u_int32_t message_id;
	52	u_int32_t message_error;
	53	u_int32_t message_payload_length;
	54	};
	55
	56	struct netagent_trigger_message {
	57	u_int32_t trigger_flags;
	58	pid_t trigger_pid;
	59	uuid_t trigger_proc_uuid;
	60	};
	61
39037602 A	62	struct netagent_client_message {
	63	uuid_t client_id;
	64	};
	65
	66	struct netagent_assign_nexus_message {
	67	uuid_t assign_client_id;
	68	u_int8_t assign_necp_results[0];
	69	};
	70
3e170ce0 A	71	#define NETAGENT_MESSAGE_TYPE_REGISTER 1 // Pass netagent to set, no return value
	72	#define NETAGENT_MESSAGE_TYPE_UNREGISTER 2 // No value, no return value
	73	#define NETAGENT_MESSAGE_TYPE_UPDATE 3 // Pass netagent to update, no return value
39037602	74	#define NETAGENT_MESSAGE_TYPE_GET 4 // No value, return netagent
3e170ce0	75	#define NETAGENT_MESSAGE_TYPE_TRIGGER 5 // Kernel initiated, no reply expected
39037602 A	76	#define NETAGENT_MESSAGE_TYPE_ASSERT 6 // Deprecated
39037602 A	77	#define NETAGENT_MESSAGE_TYPE_UNASSERT 7 // Deprecated
3e170ce0 A	78	#define NETAGENT_MESSAGE_TYPE_TRIGGER_ASSERT 8 // Kernel initiated, no reply expected
3e170ce0 A	79	#define NETAGENT_MESSAGE_TYPE_TRIGGER_UNASSERT 9 // Kernel initiated, no reply expected
39037602 A	80	#define NETAGENT_MESSAGE_TYPE_REQUEST_NEXUS 10 // Kernel initiated, struct netagent_client_message
	81	#define NETAGENT_MESSAGE_TYPE_ASSIGN_NEXUS 11 // Pass struct netagent_assign_nexus_message
	82	#define NETAGENT_MESSAGE_TYPE_CLOSE_NEXUS 12 // Kernel initiated, struct netagent_client_message
	83	#define NETAGENT_MESSAGE_TYPE_CLIENT_TRIGGER 13 // Kernel initiated, struct netagent_client_message
	84	#define NETAGENT_MESSAGE_TYPE_CLIENT_ASSERT 14 // Kernel initiated, struct netagent_client_message
	85	#define NETAGENT_MESSAGE_TYPE_CLIENT_UNASSERT 15 // Kernel initiated, struct netagent_client_message
	86
	87	#define NETAGENT_OPTION_TYPE_REGISTER NETAGENT_MESSAGE_TYPE_REGISTER // Pass netagent to set, no return value
	88	#define NETAGENT_OPTION_TYPE_UNREGISTER NETAGENT_MESSAGE_TYPE_UNREGISTER // No value, no return value
	89	#define NETAGENT_OPTION_TYPE_UPDATE NETAGENT_MESSAGE_TYPE_UPDATE // Pass netagent to update, no return value
	90	#define NETAGENT_OPTION_TYPE_ASSIGN_NEXUS NETAGENT_MESSAGE_TYPE_ASSIGN_NEXUS // Pass struct netagent_assign_nexus_message
813fb2f6	91	#define NETAGENT_OPTION_TYPE_USE_COUNT 16 // Pass use count to set, get current use count
5ba3f43e	92	#define NETAGENT_MESSAGE_TYPE_ABORT_NEXUS 17 // Kernel private
3e170ce0 A	93
	94	#define NETAGENT_MESSAGE_FLAGS_RESPONSE 0x01 // Used for acks, errors, and query responses
	95
	96	#define NETAGENT_MESSAGE_ERROR_NONE 0
	97	#define NETAGENT_MESSAGE_ERROR_INTERNAL 1
	98	#define NETAGENT_MESSAGE_ERROR_UNKNOWN_TYPE 2
	99	#define NETAGENT_MESSAGE_ERROR_INVALID_DATA 3
	100	#define NETAGENT_MESSAGE_ERROR_NOT_REGISTERED 4
	101	#define NETAGENT_MESSAGE_ERROR_ALREADY_REGISTERED 5
	102	#define NETAGENT_MESSAGE_ERROR_CANNOT_UPDATE 6
39037602	103	#define NETAGENT_MESSAGE_ERROR_CANNOT_ASSIGN 7
3e170ce0 A	104
	105	#define NETAGENT_DOMAINSIZE 32
	106	#define NETAGENT_TYPESIZE 32
	107	#define NETAGENT_DESCSIZE 128
	108
39037602	109	#define NETAGENT_MAX_DATA_SIZE 4096
3e170ce0 A	110
	111	#define NETAGENT_FLAG_REGISTERED 0x0001 // Agent is registered
	112	#define NETAGENT_FLAG_ACTIVE 0x0002 // Agent is active
	113	#define NETAGENT_FLAG_KERNEL_ACTIVATED 0x0004 // Agent can be activated by kernel activity
	114	#define NETAGENT_FLAG_USER_ACTIVATED 0x0008 // Agent can be activated by system call (netagent_trigger)
	115	#define NETAGENT_FLAG_VOLUNTARY 0x0010 // Use of agent is optional
	116	#define NETAGENT_FLAG_SPECIFIC_USE_ONLY 0x0020 // Agent should only be used and activated when specifically required
39037602 A	117	#define NETAGENT_FLAG_NETWORK_PROVIDER 0x0040 // Agent provides network access
39037602 A	118	#define NETAGENT_FLAG_NEXUS_PROVIDER 0x0080 // Agent provides a skywalk nexus
5ba3f43e	119	#define NETAGENT_FLAG_SUPPORTS_BROWSE 0x0100 // Assertions will cause agent to fill in browse endpoints
39037602 A	120
	121	#define NETAGENT_NEXUS_MAX_REQUEST_TYPES 16
	122	#define NETAGENT_NEXUS_MAX_RESOLUTION_TYPE_PAIRS 16
	123
	124	#define NETAGENT_NEXUS_FRAME_TYPE_UNKNOWN 0
	125	#define NETAGENT_NEXUS_FRAME_TYPE_LINK 1
	126	#define NETAGENT_NEXUS_FRAME_TYPE_INTERNET 2
	127	#define NETAGENT_NEXUS_FRAME_TYPE_TRANSPORT 3
	128	#define NETAGENT_NEXUS_FRAME_TYPE_APPLICATION 4
	129
5ba3f43e A	130	#define NETAGENT_NEXUS_ENDPOINT_TYPE_ADDRESS 1
	131	#define NETAGENT_NEXUS_ENDPOINT_TYPE_HOST 2
	132	#define NETAGENT_NEXUS_ENDPOINT_TYPE_BONJOUR 3
	133
	134	#define NETAGENT_NEXUS_FLAG_SUPPORTS_USER_PACKET_POOL 0x1
	135	#define NETAGENT_NEXUS_FLAG_ASSERT_UNSUPPORTED 0x2 // No calls to assert the agent are required
	136
39037602 A	137	struct netagent_nexus {
	138	u_int32_t frame_type;
	139	u_int32_t endpoint_assignment_type;
	140	u_int32_t endpoint_request_types[NETAGENT_NEXUS_MAX_REQUEST_TYPES];
	141	u_int32_t endpoint_resolution_type_pairs[NETAGENT_NEXUS_MAX_RESOLUTION_TYPE_PAIRS * 2];
5ba3f43e	142	u_int32_t nexus_flags;
39037602	143	};
3e170ce0 A	144
	145	#define NETAGENT_TRIGGER_FLAG_USER 0x0001 // Userspace triggered agent
	146	#define NETAGENT_TRIGGER_FLAG_KERNEL 0x0002 // Kernel triggered agent
	147
3e170ce0 A	148	struct kev_netagent_data {
	149	uuid_t netagent_uuid;
	150	};
	151
	152	// To be used with kernel control socket
	153	struct netagent {
	154	uuid_t netagent_uuid;
	155	char netagent_domain[NETAGENT_DOMAINSIZE];
	156	char netagent_type[NETAGENT_TYPESIZE];
	157	char netagent_desc[NETAGENT_DESCSIZE];
	158	u_int32_t netagent_flags;
	159	u_int32_t netagent_data_size;
	160	u_int8_t netagent_data[0];
	161	};
	162
	163	// To be used with SIOCGAGENTDATA
	164	struct netagent_req {
	165	uuid_t netagent_uuid;
	166	char netagent_domain[NETAGENT_DOMAINSIZE];
	167	char netagent_type[NETAGENT_TYPESIZE];
	168	char netagent_desc[NETAGENT_DESCSIZE];
	169	u_int32_t netagent_flags;
	170	u_int32_t netagent_data_size;
	171	u_int8_t *netagent_data;
	172	};
39037602 A	173
	174	// To be used with SIOCGAGENTLIST
	175	struct netagentlist_req {
	176	u_int32_t data_size;
	177	u_int8_t *data;
	178	};
3e170ce0 A	179	#ifdef BSD_KERNEL_PRIVATE
	180	int netagent_ioctl(u_long cmd, caddr_t data);
	181
	182	struct netagent_req32 {
	183	uuid_t netagent_uuid;
	184	char netagent_domain[NETAGENT_DOMAINSIZE];
	185	char netagent_type[NETAGENT_TYPESIZE];
	186	char netagent_desc[NETAGENT_DESCSIZE];
	187	u_int32_t netagent_flags;
	188	u_int32_t netagent_data_size;
	189	user32_addr_t netagent_data;
	190	};
	191	struct netagent_req64 {
	192	uuid_t netagent_uuid;
	193	char netagent_domain[NETAGENT_DOMAINSIZE];
	194	char netagent_type[NETAGENT_TYPESIZE];
	195	char netagent_desc[NETAGENT_DESCSIZE];
	196	u_int32_t netagent_flags;
	197	u_int32_t netagent_data_size;
	198	user64_addr_t netagent_data __attribute__((aligned(8)));
	199	};
39037602 A	200	struct netagentlist_req32 {
	201	u_int32_t data_size;
	202	user32_addr_t data;
	203	};
	204	struct netagentlist_req64 {
	205	u_int32_t data_size;
	206	user64_addr_t data __attribute__((aligned(8)));
	207	};
3e170ce0	208
5ba3f43e A	209	struct necp_client_nexus_parameters;
5ba3f43e A	210
3e170ce0	211	// Kernel accessors
39037602	212	extern void netagent_post_updated_interfaces(uuid_t uuid); // To be called from interface ioctls
3e170ce0	213
39037602	214	extern u_int32_t netagent_get_flags(uuid_t uuid);
3e170ce0	215
39037602	216	extern u_int32_t netagent_get_generation(uuid_t uuid);
3e170ce0	217
39037602 A	218	extern bool netagent_get_agent_domain_and_type(uuid_t uuid, char domain, char type);
	219
	220	extern int netagent_kernel_trigger(uuid_t uuid);
	221
5ba3f43e A	222	extern int netagent_client_message(uuid_t agent_uuid, uuid_t necp_client_uuid, pid_t pid, u_int8_t message_type);
	223
	224	extern int netagent_client_message_with_params(uuid_t agent_uuid,
	225	uuid_t necp_client_uuid,
	226	pid_t pid,
	227	u_int8_t message_type,
	228	struct necp_client_nexus_parameters *parameters,
	229	void **assigned_results,
	230	size_t *assigned_results_length);
39037602 A	231
39037602 A	232	extern int netagent_copyout(uuid_t uuid, user_addr_t user_addr, u_int32_t user_size);
813fb2f6	233
5ba3f43e A	234
	235	// Kernel agent management
	236
	237	typedef void * netagent_session_t;
	238
	239	struct netagent_nexus_agent {
	240	struct netagent agent;
	241	struct netagent_nexus nexus_data;
	242	};
	243
	244	#define NETAGENT_EVENT_TRIGGER NETAGENT_MESSAGE_TYPE_CLIENT_TRIGGER
	245	#define NETAGENT_EVENT_ASSERT NETAGENT_MESSAGE_TYPE_CLIENT_ASSERT
	246	#define NETAGENT_EVENT_UNASSERT NETAGENT_MESSAGE_TYPE_CLIENT_UNASSERT
	247	#define NETAGENT_EVENT_NEXUS_FLOW_INSERT NETAGENT_MESSAGE_TYPE_REQUEST_NEXUS
	248	#define NETAGENT_EVENT_NEXUS_FLOW_REMOVE NETAGENT_MESSAGE_TYPE_CLOSE_NEXUS
	249	#define NETAGENT_EVENT_NEXUS_FLOW_ABORT NETAGENT_MESSAGE_TYPE_ABORT_NEXUS
	250
	251	typedef errno_t (netagent_event_f)(u_int8_t event, uuid_t necp_client_uuid, pid_t pid, void context, struct necp_client_nexus_parameters parameters, void assigned_results, size_t assigned_results_length);
	252
	253	extern netagent_session_t netagent_create(netagent_event_f event_handler, void *handle);
	254
	255	extern void netagent_destroy(netagent_session_t session);
	256
	257	extern errno_t netagent_register(netagent_session_t session, struct netagent *agent);
	258
	259	extern errno_t netagent_update(netagent_session_t session, struct netagent *agent);
	260
	261	extern errno_t netagent_unregister(netagent_session_t session);
	262
	263	extern errno_t netagent_assign_nexus(netagent_session_t _session,
	264	uuid_t necp_client_uuid,
	265	void *assign_message,
	266	size_t assigned_results_length); // Length of assigned_results_length
	267
	268	extern errno_t netagent_update_flow_protoctl_event(netagent_session_t _session,
	269	uuid_t client_id,
	270	uint32_t protoctl_event_code,
	271	uint32_t protoctl_event_val,
	272	uint32_t protoctl_event_tcp_seq_number);
	273
813fb2f6	274	extern int netagent_use(uuid_t agent_uuid, uint64_t *out_use_count);
5ba3f43e	275
39037602	276	#endif /* BSD_KERNEL_PRIVATE */
3e170ce0 A	277
3e170ce0 A	278	#ifndef KERNEL
39037602	279	extern int netagent_trigger(uuid_t agent_uuid, size_t agent_uuidlen);
3e170ce0 A	280	#endif /* !KERNEL */
3e170ce0 A	281
39037602 A	282	#endif /* PRIVATE */
39037602 A	283
3e170ce0	284	#endif /* _NETAGENT_H_ */