/*
* This file define the new driver API for Wireless Extensions
*
- * Version : 6 21.6.04
+ * Version : 7 18.3.05
*
* Authors : Jean Tourrilhes - HPL - <jt@hpl.hp.com>
- * Copyright (c) 2001-2004 Jean Tourrilhes, All Rights Reserved.
+ * Copyright (c) 2001-2006 Jean Tourrilhes, All Rights Reserved.
*/
#ifndef _IW_HANDLER_H
* will be needed...
* I just plan to increment with each new version.
*/
-#define IW_HANDLER_VERSION 6
+#define IW_HANDLER_VERSION 7
/*
* Changes :
* - Remove spy #ifdef, they are always on -> cleaner code
* - Add IW_DESCR_FLAG_NOMAX flag for very large requests
* - Start migrating get_wireless_stats to struct iw_handler_def
+ *
+ * V6 to V7
+ * --------
+ * - Add struct ieee80211_device pointer in struct iw_public_data
+ * - Remove (struct iw_point *)->pointer from events and streams
+ * - Remove spy_offset from struct iw_handler_def
+ * - Add "check" version of event macros for ieee802.11 stack
*/
/**************************** CONSTANTS ****************************/
__u16 num_private_args;
/* Array of handlers for standard ioctls
- * We will call dev->wireless_handlers->standard[ioctl - SIOCSIWNAME]
+ * We will call dev->wireless_handlers->standard[ioctl - SIOCSIWCOMMIT]
*/
const iw_handler * standard;
* We will automatically export that to user space... */
const struct iw_priv_args * private_args;
- /* This field will be *removed* in the next version of WE */
- long spy_offset; /* DO NOT USE */
-
/* New location of get_wireless_stats, to de-bloat struct net_device.
* The old pointer in struct net_device will be gradually phased
* out, and drivers are encouraged to use this one... */
/* --------------------- DEVICE WIRELESS DATA --------------------- */
/*
* This is all the wireless data specific to a device instance that
- * is managed by the core of Wireless Extensions.
+ * is managed by the core of Wireless Extensions or the 802.11 layer.
* We only keep pointer to those structures, so that a driver is free
* to share them between instances.
* This structure should be initialised before registering the device.
* Access to this data follow the same rules as any other struct net_device
* data (i.e. valid as long as struct net_device exist, same locking rules).
*/
+/* Forward declaration */
+struct ieee80211_device;
+/* The struct */
struct iw_public_data {
/* Driver enhanced spy support */
- struct iw_spy_data * spy_data;
+ struct iw_spy_data * spy_data;
+ /* Structure managed by the in-kernel IEEE 802.11 layer */
+ struct ieee80211_device * ieee80211;
};
/**************************** PROTOTYPES ****************************/
extern int dev_get_wireless_info(char * buffer, char **start, off_t offset,
int length);
-/* Handle IOCTLs, called in net/code/dev.c */
+/* Handle IOCTLs, called in net/core/dev.c */
extern int wireless_process_ioctl(struct ifreq *ifr, unsigned int cmd);
+/* Handle RtNetlink requests, called in net/core/rtnetlink.c */
+extern int wireless_rtnetlink_set(struct net_device * dev,
+ char * data,
+ int len);
+extern int wireless_rtnetlink_get(struct net_device * dev,
+ char * data,
+ int len,
+ char ** p_buf,
+ int * p_len);
+
/* Second : functions that may be called by driver modules */
/* Send a single event to user space */
int event_len) /* Real size of payload */
{
/* Check if it's possible */
- if((stream + event_len) < ends) {
+ if(likely((stream + event_len) < ends)) {
iwe->len = event_len;
memcpy(stream, (char *) iwe, event_len);
stream += event_len;
static inline char *
iwe_stream_add_point(char * stream, /* Stream of events */
char * ends, /* End of stream */
- struct iw_event *iwe, /* Payload */
- char * extra)
+ struct iw_event *iwe, /* Payload length + flags */
+ char * extra) /* More payload */
{
int event_len = IW_EV_POINT_LEN + iwe->u.data.length;
/* Check if it's possible */
- if((stream + event_len) < ends) {
+ if(likely((stream + event_len) < ends)) {
iwe->len = event_len;
- memcpy(stream, (char *) iwe, IW_EV_POINT_LEN);
+ memcpy(stream, (char *) iwe, IW_EV_LCP_LEN);
+ memcpy(stream + IW_EV_LCP_LEN,
+ ((char *) iwe) + IW_EV_LCP_LEN + IW_EV_POINT_OFF,
+ IW_EV_POINT_LEN - IW_EV_LCP_LEN);
memcpy(stream + IW_EV_POINT_LEN, extra, iwe->u.data.length);
stream += event_len;
}
event_len -= IW_EV_LCP_LEN;
/* Check if it's possible */
- if((value + event_len) < ends) {
+ if(likely((value + event_len) < ends)) {
/* Add new value */
memcpy(value, (char *) iwe + IW_EV_LCP_LEN, event_len);
value += event_len;
return value;
}
+/*------------------------------------------------------------------*/
+/*
+ * Wrapper to add an Wireless Event to a stream of events.
+ * Same as above, with explicit error check...
+ */
+static inline char *
+iwe_stream_check_add_event(char * stream, /* Stream of events */
+ char * ends, /* End of stream */
+ struct iw_event *iwe, /* Payload */
+ int event_len, /* Size of payload */
+ int * perr) /* Error report */
+{
+ /* Check if it's possible, set error if not */
+ if(likely((stream + event_len) < ends)) {
+ iwe->len = event_len;
+ memcpy(stream, (char *) iwe, event_len);
+ stream += event_len;
+ } else
+ *perr = -E2BIG;
+ return stream;
+}
+
+/*------------------------------------------------------------------*/
+/*
+ * Wrapper to add an short Wireless Event containing a pointer to a
+ * stream of events.
+ * Same as above, with explicit error check...
+ */
+static inline char *
+iwe_stream_check_add_point(char * stream, /* Stream of events */
+ char * ends, /* End of stream */
+ struct iw_event *iwe, /* Payload length + flags */
+ char * extra, /* More payload */
+ int * perr) /* Error report */
+{
+ int event_len = IW_EV_POINT_LEN + iwe->u.data.length;
+ /* Check if it's possible */
+ if(likely((stream + event_len) < ends)) {
+ iwe->len = event_len;
+ memcpy(stream, (char *) iwe, IW_EV_LCP_LEN);
+ memcpy(stream + IW_EV_LCP_LEN,
+ ((char *) iwe) + IW_EV_LCP_LEN + IW_EV_POINT_OFF,
+ IW_EV_POINT_LEN - IW_EV_LCP_LEN);
+ memcpy(stream + IW_EV_POINT_LEN, extra, iwe->u.data.length);
+ stream += event_len;
+ } else
+ *perr = -E2BIG;
+ return stream;
+}
+
+/*------------------------------------------------------------------*/
+/*
+ * Wrapper to add a value to a Wireless Event in a stream of events.
+ * Be careful, this one is tricky to use properly :
+ * At the first run, you need to have (value = event + IW_EV_LCP_LEN).
+ * Same as above, with explicit error check...
+ */
+static inline char *
+iwe_stream_check_add_value(char * event, /* Event in the stream */
+ char * value, /* Value in event */
+ char * ends, /* End of stream */
+ struct iw_event *iwe, /* Payload */
+ int event_len, /* Size of payload */
+ int * perr) /* Error report */
+{
+ /* Don't duplicate LCP */
+ event_len -= IW_EV_LCP_LEN;
+
+ /* Check if it's possible */
+ if(likely((value + event_len) < ends)) {
+ /* Add new value */
+ memcpy(value, (char *) iwe + IW_EV_LCP_LEN, event_len);
+ value += event_len;
+ /* Patch LCP */
+ iwe->len = value - event;
+ memcpy(event, (char *) iwe, IW_EV_LCP_LEN);
+ } else
+ *perr = -E2BIG;
+ return value;
+}
+
#endif /* _IW_HANDLER_H */
git://git.onelab.eu / linux-2.6.git / blobdiff