From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 60AF3274B46; Sat, 12 Sep 2026 14:41:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789224115; cv=none; b=Q29AIgi7qG5IRHU9avI0I5Ig4UFcQ1Vds/vXTpuTpv9p+zq4XNnAlVENIDSjAQQMMFrKMKVH8KnuzBAHeSQ7NX9dWBcooM/7ComT7XfcVqgsf1O6EavXModVregjDe7rs3m4Ubrdx6P/vN48x3QNA0DBcn2isxsjVPzWF+WtuXA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789224115; c=relaxed/simple; bh=3seWKDJp1geAVhA77Fcobm43x3iRaZ6MeAjGFIftfEo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ghHAU4A29cOQ/WD4fdjw9BnO1IXtd/kiIOp1tN1ONkzCfKbY7EB4zo6TvJ6VNsN23sPhqVcPNB/DBLWgYzIKa0cL43fkKvO3VAeBZc+wl5eERwxyuqvYk7nqwwJn+j8iLzw5f/ATqWcxiFFnka4zuILjIyuASknbLRhx4MHZv8M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=w5FbVpgh; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="w5FbVpgh" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BC6451F000FF; Sat, 12 Sep 2026 14:41:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789224113; bh=Y5oA2WDT3GbbjsHKbwmbVgLp7ZMEFQDA+e3YTZJm9eU=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=w5FbVpghWvPleHisxmGYDCAnHdrvLLV6sEckeIJuNHcHFbY3/WQNj/6DBuzSrxuz+ yy8+HKQ04XBL9kcG+zWV0tabvLo7krjlthFGYzrZmp7JDsXJ4JEDHRyZjia2wpuKj1 jfiv8BvTDUa4FVaDfucr8+G8Nnpsw91Rn+KHouMY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Kang Yang , Jeff Johnson , Kalle Valo , Sasha Levin Subject: [PATCH 6.6 0927/1424] wifi: ath11k: implement handling of P2P NoA event Date: Sat, 12 Sep 2026 08:55:59 +0200 Message-ID: <20260912065628.084273563@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065607.279695368@linuxfoundation.org> References: <20260912065607.279695368@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Kang Yang [ Upstream commit 2408379f15a1039eb47da01c6d197112332fc4a7 ] 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 Acked-by: Jeff Johnson Signed-off-by: Kalle Valo Link: https://msgid.link/20240228093537.25052-4-quic_kangyang@quicinc.com Stable-dep-of: 208d7fdb8597 ("wifi: ath11k: fix overreads in ath11k_wmi_process_csa_switch_count_event()") Signed-off-by: Sasha Levin --- 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 2c94d50ae36f7..43d2d8ddcdc05 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 0000000000000..01e14523f1fe7 --- /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 0000000000000..d907940a9b096 --- /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 538ac38aaf0bd..e7052c6f07368 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); @@ -8653,6 +8658,64 @@ 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; @@ -8782,6 +8845,9 @@ 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 9f6280d87b898..6276d420db1f2 100644 --- a/drivers/net/wireless/ath/ath11k/wmi.h +++ b/drivers/net/wireless/ath/ath11k/wmi.h @@ -3584,6 +3584,37 @@ 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 -- 2.53.0