git: 4c3684ef5cf2 - main - net80211 / LinuxKPI: 802.11: add Control Trigger Subframe information

The branch main has been updated by bz:

URL: https://cgit.FreeBSD.org/src/commit/?id=4c3684ef5cf239efeae8675787ac30247e70be8a

commit 4c3684ef5cf239efeae8675787ac30247e70be8a
Author:     Bjoern A. Zeeb <bz@FreeBSD.org>
AuthorDate: 2022-06-17 22:55:13 +0000
Commit:     Bjoern A. Zeeb <bz@FreeBSD.org>
CommitDate: 2022-06-17 22:55:13 +0000

    net80211 / LinuxKPI: 802.11: add Control Trigger Subframe information
    
    Add definitions related to 802.11ax Control Trigger frame format
    needed for rtw89.
    
    MFC after:      3 days
---
 .../linuxkpi/common/include/linux/ieee80211.h      | 38 ++++++++++++++++++++++
 sys/net80211/ieee80211.h                           |  1 +
 2 files changed, 39 insertions(+)

diff --git a/sys/compat/linuxkpi/common/include/linux/ieee80211.h b/sys/compat/linuxkpi/common/include/linux/ieee80211.h
index c131a6c69495..dee8c385464c 100644
--- a/sys/compat/linuxkpi/common/include/linux/ieee80211.h
+++ b/sys/compat/linuxkpi/common/include/linux/ieee80211.h
@@ -475,6 +475,33 @@ enum ieee80211_status_code {
 	WLAN_STATUS_AUTH_TIMEOUT		= 16,	/* REJECTED_SEQUENCE_TIMEOUT */
 };
 
+/* 9.3.1.22 Trigger frame format; 80211ax-2021 */
+struct ieee80211_trigger {
+        __le16		frame_control;
+        __le16		duration_id;
+	uint8_t		ra[ETH_ALEN];
+	uint8_t		ta[ETH_ALEN];
+	__le64		common_info;		/* 8+ really */
+	uint8_t		variable[];
+};
+
+/* Table 9-29c-Trigger Type subfield encoding */
+enum {
+	IEEE80211_TRIGGER_TYPE_BASIC		= 0x0,
+#if 0
+	/* Not seen yet. */
+	BFRP					= 0x1,
+	MU-BAR					= 0x2,
+	MU-RTS					= 0x3,
+	BSRP					= 0x4,
+	GCR MU-BAR				= 0x5,
+	BQRP					= 0x6,
+	NFRP					= 0x7,
+	/* 0x8..0xf reserved */
+#endif
+	IEEE80211_TRIGGER_TYPE_MASK		= 0xf
+};
+
 /* net80211: IEEE80211_IS_CTL() */
 static __inline bool
 ieee80211_is_ctl(__le16 fc)
@@ -565,4 +592,15 @@ ieee80211_hdrlen(__le16 fc)
 	return (size);
 }
 
+static inline bool
+ieee80211_is_trigger(__le16 fc)
+{
+	__le16 v;
+
+	fc &= htole16(IEEE80211_FC0_SUBTYPE_MASK | IEEE80211_FC0_TYPE_MASK);
+	v = htole16(IEEE80211_FC0_SUBTYPE_TRIGGER | IEEE80211_FC0_TYPE_CTL);
+
+	return (fc == v);
+}
+
 #endif	/* _LINUXKPI_LINUX_IEEE80211_H */
diff --git a/sys/net80211/ieee80211.h b/sys/net80211/ieee80211.h
index 86ab1459cca9..0e53bc259a5d 100644
--- a/sys/net80211/ieee80211.h
+++ b/sys/net80211/ieee80211.h
@@ -139,6 +139,7 @@ struct ieee80211_qosframe_addr4 {
 #define	IEEE80211_FC0_SUBTYPE_ACTION		0xd0
 #define	IEEE80211_FC0_SUBTYPE_ACTION_NOACK	0xe0
 /* for TYPE_CTL */
+#define	IEEE80211_FC0_SUBTYPE_TRIGGER		0x20
 #define	IEEE80211_FC0_SUBTYPE_CONTROL_WRAP	0x70
 #define	IEEE80211_FC0_SUBTYPE_BAR		0x80
 #define	IEEE80211_FC0_SUBTYPE_BA		0x90