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35 * Intel Corporation <linux-wimax@intel.com>
36 * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
37 * - Initial implementation
40 * This file declares the user/kernel protocol that is spoken over
41 * Generic Netlink, as well as any type declaration that is to be used
42 * by kernel and user space.
44 * It is intended for user space to clone it verbatim to use it as a
45 * primary reference for definitions.
47 * Stuff intended for kernel usage as well as full protocol and stack
48 * documentation is rooted in include/net/wimax.h.
51 #ifndef __LINUX__WIMAX_H__
52 #define __LINUX__WIMAX_H__
54 #include <linux/types.h>
58 * Version of the interface (unsigned decimal, MMm, max 25.5)
59 * M - Major: change if removing or modifying an existing call.
60 * m - minor: change when adding a new call
62 WIMAX_GNL_VERSION = 00,
63 /* Generic NetLink attributes */
64 WIMAX_GNL_ATTR_INVALID = 0x00,
65 WIMAX_GNL_ATTR_MAX = 10,
70 * Generic NetLink operations
72 * Most of these map to an API call; _OP_ stands for operation, _RP_
73 * for reply and _RE_ for report (aka: signal).
76 WIMAX_GNL_OP_MSG_FROM_USER, /* User to kernel message */
77 WIMAX_GNL_OP_MSG_TO_USER, /* Kernel to user message */
78 WIMAX_GNL_OP_RFKILL, /* Run wimax_rfkill() */
79 WIMAX_GNL_OP_RESET, /* Run wimax_rfkill() */
80 WIMAX_GNL_RE_STATE_CHANGE, /* Report: status change */
84 /* Message from user / to user */
86 WIMAX_GNL_MSG_IFIDX = 1,
87 WIMAX_GNL_MSG_PIPE_NAME,
95 * The state of the radio (ON/OFF) is mapped to the rfkill subsystem's
96 * switch state (DISABLED/ENABLED).
99 WIMAX_RF_OFF = 0, /* Radio is off, rfkill on/enabled */
100 WIMAX_RF_ON = 1, /* Radio is on, rfkill off/disabled */
106 WIMAX_GNL_RFKILL_IFIDX = 1,
107 WIMAX_GNL_RFKILL_STATE,
111 /* Attributes for wimax_reset() */
113 WIMAX_GNL_RESET_IFIDX = 1,
118 * Attributes for the Report State Change
120 * For now we just have the old and new states; new attributes might
124 WIMAX_GNL_STCH_IFIDX = 1,
125 WIMAX_GNL_STCH_STATE_OLD,
126 WIMAX_GNL_STCH_STATE_NEW,
131 * enum wimax_st - The different states of a WiMAX device
132 * @__WIMAX_ST_NULL: The device structure has been allocated and zeroed,
133 * but still wimax_dev_add() hasn't been called. There is no state.
135 * @WIMAX_ST_DOWN: The device has been registered with the WiMAX and
136 * networking stacks, but it is not initialized (normally that is
137 * done with 'ifconfig DEV up' [or equivalent], which can upload
138 * firmware and enable communications with the device).
139 * In this state, the device is powered down and using as less
141 * This state is the default after a call to wimax_dev_add(). It
142 * is ok to have drivers move directly to %WIMAX_ST_UNINITIALIZED
143 * or %WIMAX_ST_RADIO_OFF in _probe() after the call to
145 * It is recommended that the driver leaves this state when
146 * calling 'ifconfig DEV up' and enters it back on 'ifconfig DEV
149 * @__WIMAX_ST_QUIESCING: The device is being torn down, so no API
150 * operations are allowed to proceed except the ones needed to
151 * complete the device clean up process.
153 * @WIMAX_ST_UNINITIALIZED: [optional] Communication with the device
154 * is setup, but the device still requires some configuration
155 * before being operational.
156 * Some WiMAX API calls might work.
158 * @WIMAX_ST_RADIO_OFF: The device is fully up; radio is off (wether
159 * by hardware or software switches).
160 * It is recommended to always leave the device in this state
161 * after initialization.
163 * @WIMAX_ST_READY: The device is fully up and radio is on.
165 * @WIMAX_ST_SCANNING: [optional] The device has been instructed to
166 * scan. In this state, the device cannot be actively connected to
169 * @WIMAX_ST_CONNECTING: The device is connecting to a network. This
170 * state exists because in some devices, the connect process can
171 * include a number of negotiations between user space, kernel
172 * space and the device. User space needs to know what the device
173 * is doing. If the connect sequence in a device is atomic and
174 * fast, the device can transition directly to CONNECTED
176 * @WIMAX_ST_CONNECTED: The device is connected to a network.
178 * @__WIMAX_ST_INVALID: This is an invalid state used to mark the
179 * maximum numeric value of states.
183 * Transitions from one state to another one are atomic and can only
184 * be caused in kernel space with wimax_state_change(). To read the
185 * state, use wimax_state_get().
187 * States starting with __ are internal and shall not be used or
188 * referred to by drivers or userspace. They look ugly, but that's the
189 * point -- if any use is made non-internal to the stack, it is easier
190 * to catch on review.
192 * All API operations [with well defined exceptions] will take the
193 * device mutex before starting and then check the state. If the state
194 * is %__WIMAX_ST_NULL, %WIMAX_ST_DOWN, %WIMAX_ST_UNINITIALIZED or
195 * %__WIMAX_ST_QUIESCING, it will drop the lock and quit with
196 * -%EINVAL, -%ENOMEDIUM, -%ENOTCONN or -%ESHUTDOWN.
198 * The order of the definitions is important, so we can do numerical
199 * comparisons (eg: < %WIMAX_ST_RADIO_OFF means the device is not ready
203 * The allowed state transitions are described in the table below
204 * (states in rows can go to states in columns where there is an X):
206 * UNINI RADIO READY SCAN CONNEC CONNEC
207 * NULL DOWN QUIESCING TIALIZED OFF NING TING TED
211 * UNINITIALIZED x - x
214 * SCANNING x x x - x x
215 * CONNECTING x x x x - x
218 * This table not available in kernel-doc because the formatting messes it up.
223 __WIMAX_ST_QUIESCING,
224 WIMAX_ST_UNINITIALIZED,
230 __WIMAX_ST_INVALID /* Always keep last */
234 #endif /* #ifndef __LINUX__WIMAX_H__ */