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iwlwifi: refactor ieee80211_get_qos_ctrl

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This patch refactors ieee80211_get_qos_ctrl function and its usage
in iwlwifi drivers. Function is moved as inline into iwl-helpers.h.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Tomas Winkler
2008-05-15 13:54:06 +08:00
committed by John W. Linville
parent 83d527d9e8
commit 54dbb525e7
5 changed files with 63 additions and 60 deletions
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19
drivers/net/wireless/iwlwifi/iwl-helpers.h
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@@ -235,6 +235,25 @@ static inline int ieee80211_is_reassoc_response(u16 fc)
((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_RESP);
}
static inline int ieee80211_is_qos_data(u16 fc)
{
return ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_QOS_DATA);
}
/**
* ieee80211_get_qos_ctrl - get pointer to the QoS control field
*
* This function returns the pointer to 802.11 header QoS field (2 bytes)
* This function doesn't check whether hdr is a QoS hdr, use with care
* @hdr: struct ieee80211_hdr *hdr
* @hdr_len: header length
*/
static inline u8 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr, int hdr_len)
{
return ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
}
static inline int iwl_check_bits(unsigned long field, unsigned long mask)
{
return ((field & mask) == mask) ? 1 : 0;