linux/drivers/net/wireless/libertas/cmd.h
David Woodhouse f15ebb63b3 libertas: change inference about buffer size in lbs_cmd()
sizeof(*cmd) is going to give the total size of the data structure that
we allocated, more often than not. But the size of the command to be
_sent_ could be a lot smaller, as it is in the KEY_MATERIAL and
SUBSCRIBE_EVENT commands for example. So swap them round; let the caller
set the _command_ size explicitly in the header, and infer the
maximum response size from the data structure.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-01-28 15:07:51 -08:00

62 lines
2.4 KiB
C

/* Copyright (C) 2007, Red Hat, Inc. */
#ifndef _LBS_CMD_H_
#define _LBS_CMD_H_
#include "hostcmd.h"
#include "dev.h"
/* lbs_cmd() infers the size of the buffer to copy data back into, from
the size of the target of the pointer. Since the command to be sent
may often be smaller, that size is set in cmd->size by the caller.*/
#define lbs_cmd(priv, cmdnr, cmd, cb, cb_arg) ({ \
uint16_t __sz = le16_to_cpu((cmd)->hdr.size); \
(cmd)->hdr.size = cpu_to_le16(sizeof(*(cmd))); \
__lbs_cmd(priv, cmdnr, &(cmd)->hdr, __sz, cb, cb_arg); \
})
#define lbs_cmd_with_response(priv, cmdnr, cmd) \
lbs_cmd(priv, cmdnr, cmd, lbs_cmd_copyback, (unsigned long) (cmd))
/* __lbs_cmd() will free the cmdnode and return success/failure.
__lbs_cmd_async() requires that the callback free the cmdnode */
struct cmd_ctrl_node *__lbs_cmd_async(struct lbs_private *priv, uint16_t command,
struct cmd_header *in_cmd, int in_cmd_size,
int (*callback)(struct lbs_private *, unsigned long, struct cmd_header *),
unsigned long callback_arg);
int __lbs_cmd(struct lbs_private *priv, uint16_t command,
struct cmd_header *in_cmd, int in_cmd_size,
int (*callback)(struct lbs_private *, unsigned long, struct cmd_header *),
unsigned long callback_arg);
int lbs_cmd_copyback(struct lbs_private *priv, unsigned long extra,
struct cmd_header *resp);
int lbs_update_hw_spec(struct lbs_private *priv);
int lbs_mesh_access(struct lbs_private *priv, uint16_t cmd_action,
struct cmd_ds_mesh_access *cmd);
int lbs_get_data_rate(struct lbs_private *priv);
int lbs_set_data_rate(struct lbs_private *priv, u8 rate);
int lbs_get_channel(struct lbs_private *priv);
int lbs_set_channel(struct lbs_private *priv, u8 channel);
int lbs_mesh_config(struct lbs_private *priv, uint16_t enable, uint16_t chan);
int lbs_host_sleep_cfg(struct lbs_private *priv, uint32_t criteria);
int lbs_suspend(struct lbs_private *priv);
int lbs_resume(struct lbs_private *priv);
int lbs_cmd_802_11_inactivity_timeout(struct lbs_private *priv,
uint16_t cmd_action, uint16_t *timeout);
int lbs_cmd_802_11_sleep_params(struct lbs_private *priv, uint16_t cmd_action,
struct sleep_params *sp);
int lbs_cmd_802_11_set_wep(struct lbs_private *priv, uint16_t cmd_action,
struct assoc_request *assoc);
int lbs_cmd_802_11_enable_rsn(struct lbs_private *priv, uint16_t cmd_action,
uint16_t *enable);
#endif /* _LBS_CMD_H */