The NoA(Notice of Absence) attribute is used by the P2P Group Owner to
signal its absence due to power save timing, concurrent operation, or
off-channel scanning. It is also used in the P2P Presence Request-Response
mechanism.
The NoA attribute shall be present in the P2P IE in the beacon frames
transmitted by a P2P Group Owner when a NoA schedule is being advertised,
or when the CTWindow is non-zero.
So add support to update P2P information after P2P GO is up through
event WMI_P2P_NOA_EVENTID, and always put it in probe resp.
Create p2p.c and p2p.h for P2P related functions and definitions.
Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.37
Tested-on: QCA2066 hw2.1 PCI WLAN.HSP.1.1-03926.13-QCAHSPSWPL_V2_SILICONZ_CE-2.52297.2
Signed-off-by: Kang Yang <quic_kangyang@xxxxxxxxxxx>
---
drivers/net/wireless/ath/ath11k/Makefile | 3 +-
drivers/net/wireless/ath/ath11k/p2p.c | 149 +++++++++++++++++++++++
drivers/net/wireless/ath/ath11k/p2p.h | 22 ++++
drivers/net/wireless/ath/ath11k/wmi.c | 68 ++++++++++-
drivers/net/wireless/ath/ath11k/wmi.h | 31 +++++
5 files changed, 271 insertions(+), 2 deletions(-)
create mode 100644 drivers/net/wireless/ath/ath11k/p2p.c
create mode 100644 drivers/net/wireless/ath/ath11k/p2p.h
diff --git a/drivers/net/wireless/ath/ath11k/Makefile b/drivers/net/wireless/ath/ath11k/Makefile
index 2c94d50ae36f..43d2d8ddcdc0 100644
--- a/drivers/net/wireless/ath/ath11k/Makefile
+++ b/drivers/net/wireless/ath/ath11k/Makefile
@@ -18,7 +18,8 @@ ath11k-y += core.o \
dbring.o \
hw.o \
pcic.o \
- fw.o
+ fw.o \
+ p2p.o
ath11k-$(CONFIG_ATH11K_DEBUGFS) += debugfs.o debugfs_htt_stats.o debugfs_sta.o
ath11k-$(CONFIG_NL80211_TESTMODE) += testmode.o
diff --git a/drivers/net/wireless/ath/ath11k/p2p.c b/drivers/net/wireless/ath/ath11k/p2p.c
new file mode 100644
index 000000000000..aabf1e04b465
--- /dev/null
+++ b/drivers/net/wireless/ath/ath11k/p2p.c
@@ -0,0 +1,149 @@
+// SPDX-License-Identifier: BSD-3-Clause-Clear
+/*
+ * Copyright (c) 2024 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#include "core.h"
+#include "wmi.h"
+#include "mac.h"
+#include "p2p.h"
+
+static void ath11k_p2p_noa_ie_fill(u8 *data, size_t len,
+ const struct ath11k_wmi_p2p_noa_info *noa)
+{
+ struct ieee80211_p2p_noa_attr *noa_attr;
+ u8 noa_descriptors, ctwindow;
+ bool oppps;
+ __le16 *noa_attr_len;
+ u16 attr_len;
+ int i;
+
+ ctwindow = u32_get_bits(noa->noa_attr, WMI_P2P_NOA_INFO_CTWIN_TU);
+ oppps = u32_get_bits(noa->noa_attr, WMI_P2P_NOA_INFO_OPP_PS);
+ noa_descriptors = u32_get_bits(noa->noa_attr,
+ WMI_P2P_NOA_INFO_DESC_NUM);
+
+ /* 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 = u32_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 = noa->descriptors[i].type_count;
+ noa_attr->desc[i].duration =
+ cpu_to_le32(noa->descriptors[i].duration);
+ noa_attr->desc[i].interval =
+ cpu_to_le32(noa->descriptors[i].interval);
+ noa_attr->desc[i].start_time =
+ cpu_to_le32(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
+ath11k_p2p_noa_ie_len_compute(const struct ath11k_wmi_p2p_noa_info *noa)
+{
+ size_t len = 0;
+ u8 noa_descriptors = u32_get_bits(noa->noa_attr,
+ WMI_P2P_NOA_INFO_DESC_NUM);
+
+ if (!(noa_descriptors) &&
+ !(u32_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 += noa_descriptors *
+ sizeof(struct ieee80211_p2p_noa_desc);
+
+ return len;
+}
+
+static void ath11k_p2p_noa_ie_assign(struct ath11k_vif *arvif, void *ie,
+ size_t len)
+{
+ struct ath11k *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 __ath11k_p2p_noa_update(struct ath11k_vif *arvif,
+ const struct ath11k_wmi_p2p_noa_info *noa)
+{
+ struct ath11k *ar = arvif->ar;
+ void *ie;
+ size_t len;
+
+ lockdep_assert_held(&ar->data_lock);
+
+ ath11k_p2p_noa_ie_assign(arvif, NULL, 0);
+
+ len = ath11k_p2p_noa_ie_len_compute(noa);
+ if (!len)
+ return;
+
+ ie = kmalloc(len, GFP_ATOMIC);
+ if (!ie)
+ return;
+
+ ath11k_p2p_noa_ie_fill(ie, len, noa);
+ ath11k_p2p_noa_ie_assign(arvif, ie, len); }
+
+void ath11k_p2p_noa_update(struct ath11k_vif *arvif,
+ const struct ath11k_wmi_p2p_noa_info *noa)
+{
+ struct ath11k *ar = arvif->ar;
+
+ spin_lock_bh(&ar->data_lock);
+ __ath11k_p2p_noa_update(arvif, noa);
+ spin_unlock_bh(&ar->data_lock);
+}
+
+static void ath11k_p2p_noa_update_vdev_iter(void *data, u8 *mac,
+ struct ieee80211_vif *vif)
+{
+ struct ath11k_vif *arvif = ath11k_vif_to_arvif(vif);
+ struct ath11k_p2p_noa_arg *arg = data;
+
+ if (arvif->vdev_id != arg->vdev_id)
+ return;
+
+ ath11k_p2p_noa_update(arvif, arg->noa);
+}
+
+void ath11k_p2p_noa_update_by_vdev_id(struct ath11k *ar, u32 vdev_id,
+ const struct ath11k_wmi_p2p_noa_info *noa)
+{
+ struct ath11k_p2p_noa_arg arg = {
+ .vdev_id = vdev_id,
+ .noa = noa,
+ };
+
+ ieee80211_iterate_active_interfaces_atomic(ar->hw,
+ IEEE80211_IFACE_ITER_NORMAL,
+ ath11k_p2p_noa_update_vdev_iter,
+ &arg);
+}
diff --git a/drivers/net/wireless/ath/ath11k/p2p.h b/drivers/net/wireless/ath/ath11k/p2p.h
new file mode 100644
index 000000000000..d907940a9b09
--- /dev/null
+++ b/drivers/net/wireless/ath/ath11k/p2p.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: BSD-3-Clause-Clear */
+/*
+ * Copyright (c) 2024 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#ifndef ATH11K_P2P_H
+#define ATH11K_P2P_H
+
+#include "wmi.h"
+
+struct ath11k_wmi_p2p_noa_info;
+
+struct ath11k_p2p_noa_arg {
+ u32 vdev_id;
+ const struct ath11k_wmi_p2p_noa_info *noa;
+};
+
+void ath11k_p2p_noa_update(struct ath11k_vif *arvif,
+ const struct ath11k_wmi_p2p_noa_info *noa);
+void ath11k_p2p_noa_update_by_vdev_id(struct ath11k *ar, u32 vdev_id,
+ const struct ath11k_wmi_p2p_noa_info *noa);
+#endif
diff --git a/drivers/net/wireless/ath/ath11k/wmi.c b/drivers/net/wireless/ath/ath11k/wmi.c
index d86fcdd374c6..c74aa3f95658 100644
--- a/drivers/net/wireless/ath/ath11k/wmi.c
+++ b/drivers/net/wireless/ath/ath11k/wmi.c
@@ -20,6 +20,7 @@
#include "hw.h"
#include "peer.h"
#include "testmode.h"
+#include "p2p.h"
struct wmi_tlv_policy {
size_t min_len;
@@ -154,6 +155,10 @@ static const struct wmi_tlv_policy wmi_tlv_policies[] = {
.min_len = sizeof(struct wmi_per_chain_rssi_stats) },
[WMI_TAG_TWT_ADD_DIALOG_COMPLETE_EVENT] = {
.min_len = sizeof(struct wmi_twt_add_dialog_event) },
+ [WMI_TAG_P2P_NOA_INFO] = {
+ .min_len = sizeof(struct ath11k_wmi_p2p_noa_info) },
+ [WMI_TAG_P2P_NOA_EVENT] = {
+ .min_len = sizeof(struct wmi_p2p_noa_event) },
};
#define PRIMAP(_hw_mode_) \
@@ -981,7 +986,7 @@ int ath11k_wmi_vdev_start(struct ath11k *ar, struct wmi_vdev_start_req_arg *arg,
FIELD_PREP(WMI_TLV_LEN, 0);
/* Note: This is a nested TLV containing:
- * [wmi_tlv][wmi_p2p_noa_descriptor][wmi_tlv]..
+ * [wmi_tlv][ath11k_wmi_p2p_noa_descriptor][wmi_tlv]..
*/
ptr += sizeof(*tlv);
@@ -8645,6 +8650,64 @@ static void ath11k_wmi_gtk_offload_status_event(struct ath11k_base *ab,
kfree(tb);
}
+static int ath11k_wmi_p2p_noa_event(struct ath11k_base *ab,
+ struct sk_buff *skb)
+{
+ const void **tb;
+ const struct wmi_p2p_noa_event *ev;
+ const struct ath11k_wmi_p2p_noa_info *noa;
+ struct ath11k *ar;
+ int ret, vdev_id;
+ u8 noa_descriptors;
+
+ tb = ath11k_wmi_tlv_parse_alloc(ab, skb, GFP_ATOMIC);
+ if (IS_ERR(tb)) {
+ ret = PTR_ERR(tb);
+ ath11k_warn(ab, "failed to parse tlv: %d\n", ret);
+ return ret;
+ }
+
+ ev = tb[WMI_TAG_P2P_NOA_EVENT];
+ noa = tb[WMI_TAG_P2P_NOA_INFO];
+
+ if (!ev || !noa) {
+ ret = -EPROTO;
+ goto out;
+ }
+
+ vdev_id = ev->vdev_id;
+ noa_descriptors = u32_get_bits(noa->noa_attr,
+ WMI_P2P_NOA_INFO_DESC_NUM);
+
+ if (noa_descriptors > WMI_P2P_MAX_NOA_DESCRIPTORS) {
+ ath11k_warn(ab, "invalid descriptor num %d in P2P NoA event\n",
+ noa_descriptors);
+ return -EINVAL;
+ goto out;
+ }
+
+ ath11k_dbg(ab, ATH11K_DBG_WMI,
+ "wmi tlv p2p noa vdev_id %i descriptors %u\n",
+ vdev_id, noa_descriptors);
+
+ rcu_read_lock();
+ ar = ath11k_mac_get_ar_by_vdev_id(ab, vdev_id);
+ if (!ar) {
+ ath11k_warn(ab, "invalid vdev id %d in P2P NoA event\n",
+ vdev_id);
+ ret = -EINVAL;
+ goto unlock;
+ }
+
+ ath11k_p2p_noa_update_by_vdev_id(ar, vdev_id, noa);
+
+unlock:
+ rcu_read_unlock();
+out:
+ kfree(tb);
+ return 0;
+}
+
static void ath11k_wmi_tlv_op_rx(struct ath11k_base *ab, struct sk_buff *skb)
{
struct wmi_cmd_hdr *cmd_hdr;
@@ -8772,6 +8835,9 @@ static void ath11k_wmi_tlv_op_rx(struct ath11k_base *ab, struct sk_buff *skb)
case WMI_GTK_OFFLOAD_STATUS_EVENTID:
ath11k_wmi_gtk_offload_status_event(ab, skb);
break;
+ case WMI_P2P_NOA_EVENTID:
+ ath11k_wmi_p2p_noa_event(ab, skb);
+ break;
default:
ath11k_dbg(ab, ATH11K_DBG_WMI, "unsupported event id 0x%x\n", id);
break;
diff --git a/drivers/net/wireless/ath/ath11k/wmi.h b/drivers/net/wireless/ath/ath11k/wmi.h
index 4c20202947c7..564f4a9ac8ce 100644
--- a/drivers/net/wireless/ath/ath11k/wmi.h
+++ b/drivers/net/wireless/ath/ath11k/wmi.h
@@ -3630,6 +3630,37 @@ struct wmi_ftm_event_msg {
u8 data[];
} __packed;
+#define WMI_P2P_MAX_NOA_DESCRIPTORS 4
+
+struct wmi_p2p_noa_event {
+ u32 vdev_id;
+} __packed;
+
+struct ath11k_wmi_p2p_noa_descriptor {
+ u32 type_count; /* 255: continuous schedule, 0: reserved */
+ u32 duration; /* Absent period duration in micro seconds */
+ u32 interval; /* Absent period interval in micro seconds */
+ u32 start_time; /* 32 bit tsf time when in starts */
+} __packed;
+
+#define WMI_P2P_NOA_INFO_CHANGED_FLAG BIT(0)
+#define WMI_P2P_NOA_INFO_INDEX GENMASK(15, 8)
+#define WMI_P2P_NOA_INFO_OPP_PS BIT(16)
+#define WMI_P2P_NOA_INFO_CTWIN_TU GENMASK(23, 17)
+#define WMI_P2P_NOA_INFO_DESC_NUM GENMASK(31, 24)
+
+struct ath11k_wmi_p2p_noa_info {
+ /* Bit 0 - Flag to indicate an update in NOA schedule
+ * Bits 7-1 - Reserved
+ * Bits 15-8 - Index (identifies the instance of NOA sub element)
+ * Bit 16 - Opp PS state of the AP
+ * Bits 23-17 - Ctwindow in TUs
+ * Bits 31-24 - Number of NOA descriptors
+ */
+ u32 noa_attr;
+ struct ath11k_wmi_p2p_noa_descriptor descriptors[WMI_P2P_MAX_NOA_DESCRIPTORS];
+} __packed;
+
#define WMI_BEACON_TX_BUFFER_SIZE 512
#define WMI_EMA_TMPL_IDX_SHIFT 8
--
2.34.1
