Commit 21ab562c authored by Po Hao Huang's avatar Po Hao Huang Committed by Kalle Valo
Browse files

ieee80211: add trigger frame definition 



Define trigger stype of control frame, and its checking function, struct
and trigger type within common_info of trigger.

Signed-off-by: default avatarPo Hao Huang <phhuang@realtek.com>
Signed-off-by: default avatarPing-Ke Shih <pkshih@realtek.com>
Signed-off-by: default avatarKalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220608113224.11193-2-pkshih@realtek.com
parent 05a2eebf

include/linux/ieee80211.h

+31 −0
Original line number Diff line number Diff line
@@ -76,6 +76,7 @@ 
#define IEEE80211_STYPE_ACTION		0x00D0



/* control */

#define IEEE80211_STYPE_TRIGGER		0x0020

#define IEEE80211_STYPE_CTL_EXT		0x0060

#define IEEE80211_STYPE_BACK_REQ	0x0080

#define IEEE80211_STYPE_BACK		0x0090
@@ -295,6 +296,17 @@ static inline u16 ieee80211_sn_sub(u16 sn1, u16 sn2) 


#define IEEE80211_HT_CTL_LEN		4



/* trigger type within common_info of trigger frame */

#define IEEE80211_TRIGGER_TYPE_MASK		0xf

#define IEEE80211_TRIGGER_TYPE_BASIC		0x0

#define IEEE80211_TRIGGER_TYPE_BFRP		0x1

#define IEEE80211_TRIGGER_TYPE_MU_BAR		0x2

#define IEEE80211_TRIGGER_TYPE_MU_RTS		0x3

#define IEEE80211_TRIGGER_TYPE_BSRP		0x4

#define IEEE80211_TRIGGER_TYPE_GCR_MU_BAR	0x5

#define IEEE80211_TRIGGER_TYPE_BQRP		0x6

#define IEEE80211_TRIGGER_TYPE_NFRP		0x7



struct ieee80211_hdr {

	__le16 frame_control;

	__le16 duration_id;
@@ -324,6 +336,15 @@ struct ieee80211_qos_hdr { 
	__le16 qos_ctrl;

} __packed __aligned(2);



struct ieee80211_trigger {

	__le16 frame_control;

	__le16 duration;

	u8 ra[ETH_ALEN];

	u8 ta[ETH_ALEN];

	__le64 common_info;

	u8 variable[];

} __packed __aligned(2);



/**

 * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set

 * @fc: frame control bytes in little-endian byteorder
@@ -729,6 +750,16 @@ static inline bool ieee80211_is_qos_nullfunc(__le16 fc) 
	       cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC);

}



/**

 * ieee80211_is_trigger - check if frame is trigger frame

 * @fc: frame control field in little-endian byteorder

 */

static inline bool ieee80211_is_trigger(__le16 fc)

{

	return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==

	       cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_TRIGGER);

}



/**

 * ieee80211_is_any_nullfunc - check if frame is regular or QoS nullfunc frame

 * @fc: frame control bytes in little-endian byteorder