1 files changed, 142 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath12k/p2p.c b/drivers/net/wireless/ath/ath12k/p2p.c
new file mode 100644
index 0000000000..d334df7200
--- /dev/null
+++ b/drivers/net/wireless/ath/ath12k/p2p.c
@@ -0,0 +1,142 @@
+// SPDX-License-Identifier: BSD-3-Clause-Clear
+/*
+ * Copyright (c) 2024 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#include <net/mac80211.h>
+#include "core.h"
+#include "mac.h"
+#include "p2p.h"
+
+static void ath12k_p2p_noa_ie_fill(u8 *data, size_t len,
+				   const struct ath12k_wmi_p2p_noa_info *noa)
+{
+	struct ieee80211_p2p_noa_attr *noa_attr;
+	u8 ctwindow = le32_get_bits(noa->noa_attr, WMI_P2P_NOA_INFO_CTWIN_TU);
+	bool oppps = le32_get_bits(noa->noa_attr, WMI_P2P_NOA_INFO_OPP_PS);
+	__le16 *noa_attr_len;
+	u16 attr_len;
+	u8 noa_descriptors = le32_get_bits(noa->noa_attr,
+					   WMI_P2P_NOA_INFO_DESC_NUM);
+	int i;
+
+	/* P2P IE */
+	data[0] = WLAN_EID_VENDOR_SPECIFIC;
+	data[1] = len - 2;
+	data[2] = (WLAN_OUI_WFA >> 16) & 0xff;
+	data[3] = (WLAN_OUI_WFA >> 8) & 0xff;
+	data[4] = (WLAN_OUI_WFA >> 0) & 0xff;
+	data[5] = WLAN_OUI_TYPE_WFA_P2P;
+
+	/* NOA ATTR */
+	data[6] = IEEE80211_P2P_ATTR_ABSENCE_NOTICE;
+	noa_attr_len = (__le16 *)&data[7]; /* 2 bytes */
+	noa_attr = (struct ieee80211_p2p_noa_attr *)&data[9];
+
+	noa_attr->index = le32_get_bits(noa->noa_attr,
+					WMI_P2P_NOA_INFO_INDEX);
+	noa_attr->oppps_ctwindow = ctwindow;
+	if (oppps)
+		noa_attr->oppps_ctwindow |= IEEE80211_P2P_OPPPS_ENABLE_BIT;
+
+	for (i = 0; i < noa_descriptors; i++) {
+		noa_attr->desc[i].count =
+			__le32_to_cpu(noa->descriptors[i].type_count);
+		noa_attr->desc[i].duration = noa->descriptors[i].duration;
+		noa_attr->desc[i].interval = noa->descriptors[i].interval;
+		noa_attr->desc[i].start_time = noa->descriptors[i].start_time;
+	}
+
+	attr_len = 2; /* index + oppps_ctwindow */
+	attr_len += noa_descriptors * sizeof(struct ieee80211_p2p_noa_desc);
+	*noa_attr_len = __cpu_to_le16(attr_len);
+}
+
+static size_t ath12k_p2p_noa_ie_len_compute(const struct ath12k_wmi_p2p_noa_info *noa)
+{
+	size_t len = 0;
+
+	if (!(le32_get_bits(noa->noa_attr, WMI_P2P_NOA_INFO_DESC_NUM)) &&
+	    !(le32_get_bits(noa->noa_attr, WMI_P2P_NOA_INFO_OPP_PS)))
+		return 0;
+
+	len += 1 + 1 + 4; /* EID + len + OUI */
+	len += 1 + 2; /* noa attr + attr len */
+	len += 1 + 1; /* index + oppps_ctwindow */
+	len += le32_get_bits(noa->noa_attr, WMI_P2P_NOA_INFO_DESC_NUM) *
+			sizeof(struct ieee80211_p2p_noa_desc);
+
+	return len;
+}
+
+static void ath12k_p2p_noa_ie_assign(struct ath12k_vif *arvif, void *ie,
+				     size_t len)
+{
+	struct ath12k *ar = arvif->ar;
+
+	lockdep_assert_held(&ar->data_lock);
+
+	kfree(arvif->u.ap.noa_data);
+
+	arvif->u.ap.noa_data = ie;
+	arvif->u.ap.noa_len = len;
+}
+
+static void __ath12k_p2p_noa_update(struct ath12k_vif *arvif,
+				    const struct ath12k_wmi_p2p_noa_info *noa)
+{
+	struct ath12k *ar = arvif->ar;
+	void *ie;
+	size_t len;
+
+	lockdep_assert_held(&ar->data_lock);
+
+	ath12k_p2p_noa_ie_assign(arvif, NULL, 0);
+
+	len = ath12k_p2p_noa_ie_len_compute(noa);
+	if (!len)
+		return;
+
+	ie = kmalloc(len, GFP_ATOMIC);
+	if (!ie)
+		return;
+
+	ath12k_p2p_noa_ie_fill(ie, len, noa);
+	ath12k_p2p_noa_ie_assign(arvif, ie, len);
+}
+
+void ath12k_p2p_noa_update(struct ath12k_vif *arvif,
+			   const struct ath12k_wmi_p2p_noa_info *noa)
+{
+	struct ath12k *ar = arvif->ar;
+
+	spin_lock_bh(&ar->data_lock);
+	__ath12k_p2p_noa_update(arvif, noa);
+	spin_unlock_bh(&ar->data_lock);
+}
+
+static void ath12k_p2p_noa_update_vdev_iter(void *data, u8 *mac,
+					    struct ieee80211_vif *vif)
+{
+	struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
+	struct ath12k_p2p_noa_arg *arg = data;
+
+	if (arvif->vdev_id != arg->vdev_id)
+		return;
+
+	ath12k_p2p_noa_update(arvif, arg->noa);
+}
+
+void ath12k_p2p_noa_update_by_vdev_id(struct ath12k *ar, u32 vdev_id,
+				      const struct ath12k_wmi_p2p_noa_info *noa)
+{
+	struct ath12k_p2p_noa_arg arg = {
+		.vdev_id = vdev_id,
+		.noa = noa,
+	};
+
+	ieee80211_iterate_active_interfaces_atomic(ath12k_ar_to_hw(ar),
+						   IEEE80211_IFACE_ITER_NORMAL,
+						   ath12k_p2p_noa_update_vdev_iter,
+						   &arg);
+}