linux/drivers/net/wireless/iwlwifi/iwl-notif-wait.h
Johannes Berg f8d7c1a18d iwlwifi: move packet to transport
The base packet structure will (hopefully) be
the same for all transports, but what is in it
differs. Remove the union of all the possible
contents and move the packet itself into the
transport header file. This requires changing
all users of the union to just use pkt->data.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-03-07 13:56:34 -05:00

130 lines
4.8 KiB
C

/******************************************************************************
*
* This file is provided under a dual BSD/GPLv2 license. When using or
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#ifndef __iwl_notif_wait_h__
#define __iwl_notif_wait_h__
#include <linux/wait.h>
#include "iwl-trans.h"
struct iwl_notif_wait_data {
struct list_head notif_waits;
spinlock_t notif_wait_lock;
wait_queue_head_t notif_waitq;
};
/**
* struct iwl_notification_wait - notification wait entry
* @list: list head for global list
* @fn: function called with the notification
* @cmd: command ID
*
* This structure is not used directly, to wait for a
* notification declare it on the stack, and call
* iwlagn_init_notification_wait() with appropriate
* parameters. Then do whatever will cause the ucode
* to notify the driver, and to wait for that then
* call iwlagn_wait_notification().
*
* Each notification is one-shot. If at some point we
* need to support multi-shot notifications (which
* can't be allocated on the stack) we need to modify
* the code for them.
*/
struct iwl_notification_wait {
struct list_head list;
void (*fn)(struct iwl_notif_wait_data *notif_data,
struct iwl_rx_packet *pkt, void *data);
void *fn_data;
u8 cmd;
bool triggered, aborted;
};
/* caller functions */
void iwl_notification_wait_init(struct iwl_notif_wait_data *notif_data);
void iwl_notification_wait_notify(struct iwl_notif_wait_data *notif_data,
struct iwl_rx_packet *pkt);
void iwl_abort_notification_waits(struct iwl_notif_wait_data *notif_data);
/* user functions */
void __acquires(wait_entry)
iwl_init_notification_wait(struct iwl_notif_wait_data *notif_data,
struct iwl_notification_wait *wait_entry,
u8 cmd,
void (*fn)(struct iwl_notif_wait_data *notif_data,
struct iwl_rx_packet *pkt, void *data),
void *fn_data);
int __must_check __releases(wait_entry)
iwl_wait_notification(struct iwl_notif_wait_data *notif_data,
struct iwl_notification_wait *wait_entry,
unsigned long timeout);
void __releases(wait_entry)
iwl_remove_notification(struct iwl_notif_wait_data *notif_data,
struct iwl_notification_wait *wait_entry);
#endif /* __iwl_notif_wait_h__ */