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mac80211: allow mac80211 drivers to get to struct ieee80211_hw from wiphy

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If a driver is given a wiphy and it wants to get to its private
mac80211 driver area it can use wiphy_to_ieee80211_hw() to get first
to its ieee80211_hw and then access the private structure via hw->priv. The
wiphy_priv() is already being used internally by mac80211 and drivers
should not use this. This can be helpful in a drivers reg_notifier().

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Luis R. Rodriguez 2009-01-22 15:05:53 -08:00 committed by John W. Linville
parent f976376de0
commit 9a95371aa2
2 changed files with 22 additions and 0 deletions
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13
include/net/mac80211.h
View file

@ -989,6 +989,19 @@ struct ieee80211_hw {
u8 max_rate_tries;
};
/**
* wiphy_to_ieee80211_hw - return a mac80211 driver hw struct from a wiphy
*
* @wiphy: the &struct wiphy which we want to query
*
* mac80211 drivers can use this to get to their respective
* &struct ieee80211_hw. Drivers wishing to get to their own private
* structure can then access it via hw->priv. Note that mac802111 drivers should
* not use wiphy_priv() to try to get their private driver structure as this
* is already used internally by mac80211.
*/
struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy);
/**
* SET_IEEE80211_DEV - set device for 802.11 hardware
*

9
net/mac80211/util.c
View file

@ -41,6 +41,15 @@ const unsigned char rfc1042_header[] __aligned(2) =
const unsigned char bridge_tunnel_header[] __aligned(2) =
{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy)
{
struct ieee80211_local *local;
BUG_ON(!wiphy);
local = wiphy_priv(wiphy);
return &local->hw;
}
EXPORT_SYMBOL(wiphy_to_ieee80211_hw);
u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
enum nl80211_iftype type)