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1// SPDX-License-Identifier: BSD-3-Clause-Clear2/*3 * Copyright (c) 2024 Qualcomm Innovation Center, Inc. All rights reserved.4 */5 6#include <net/mac80211.h>7#include "core.h"8#include "mac.h"9#include "p2p.h"10 11static void ath12k_p2p_noa_ie_fill(u8 *data, size_t len,12 const struct ath12k_wmi_p2p_noa_info *noa)13{14 struct ieee80211_p2p_noa_attr *noa_attr;15 u8 ctwindow = le32_get_bits(noa->noa_attr, WMI_P2P_NOA_INFO_CTWIN_TU);16 bool oppps = le32_get_bits(noa->noa_attr, WMI_P2P_NOA_INFO_OPP_PS);17 __le16 *noa_attr_len;18 u16 attr_len;19 u8 noa_descriptors = le32_get_bits(noa->noa_attr,20 WMI_P2P_NOA_INFO_DESC_NUM);21 int i;22 23 /* P2P IE */24 data[0] = WLAN_EID_VENDOR_SPECIFIC;25 data[1] = len - 2;26 data[2] = (WLAN_OUI_WFA >> 16) & 0xff;27 data[3] = (WLAN_OUI_WFA >> 8) & 0xff;28 data[4] = (WLAN_OUI_WFA >> 0) & 0xff;29 data[5] = WLAN_OUI_TYPE_WFA_P2P;30 31 /* NOA ATTR */32 data[6] = IEEE80211_P2P_ATTR_ABSENCE_NOTICE;33 noa_attr_len = (__le16 *)&data[7]; /* 2 bytes */34 noa_attr = (struct ieee80211_p2p_noa_attr *)&data[9];35 36 noa_attr->index = le32_get_bits(noa->noa_attr,37 WMI_P2P_NOA_INFO_INDEX);38 noa_attr->oppps_ctwindow = ctwindow;39 if (oppps)40 noa_attr->oppps_ctwindow |= IEEE80211_P2P_OPPPS_ENABLE_BIT;41 42 for (i = 0; i < noa_descriptors; i++) {43 noa_attr->desc[i].count =44 __le32_to_cpu(noa->descriptors[i].type_count);45 noa_attr->desc[i].duration = noa->descriptors[i].duration;46 noa_attr->desc[i].interval = noa->descriptors[i].interval;47 noa_attr->desc[i].start_time = noa->descriptors[i].start_time;48 }49 50 attr_len = 2; /* index + oppps_ctwindow */51 attr_len += noa_descriptors * sizeof(struct ieee80211_p2p_noa_desc);52 *noa_attr_len = __cpu_to_le16(attr_len);53}54 55static size_t ath12k_p2p_noa_ie_len_compute(const struct ath12k_wmi_p2p_noa_info *noa)56{57 size_t len = 0;58 59 if (!(le32_get_bits(noa->noa_attr, WMI_P2P_NOA_INFO_DESC_NUM)) &&60 !(le32_get_bits(noa->noa_attr, WMI_P2P_NOA_INFO_OPP_PS)))61 return 0;62 63 len += 1 + 1 + 4; /* EID + len + OUI */64 len += 1 + 2; /* noa attr + attr len */65 len += 1 + 1; /* index + oppps_ctwindow */66 len += le32_get_bits(noa->noa_attr, WMI_P2P_NOA_INFO_DESC_NUM) *67 sizeof(struct ieee80211_p2p_noa_desc);68 69 return len;70}71 72static void ath12k_p2p_noa_ie_assign(struct ath12k_vif *arvif, void *ie,73 size_t len)74{75 struct ath12k *ar = arvif->ar;76 77 lockdep_assert_held(&ar->data_lock);78 79 kfree(arvif->u.ap.noa_data);80 81 arvif->u.ap.noa_data = ie;82 arvif->u.ap.noa_len = len;83}84 85static void __ath12k_p2p_noa_update(struct ath12k_vif *arvif,86 const struct ath12k_wmi_p2p_noa_info *noa)87{88 struct ath12k *ar = arvif->ar;89 void *ie;90 size_t len;91 92 lockdep_assert_held(&ar->data_lock);93 94 ath12k_p2p_noa_ie_assign(arvif, NULL, 0);95 96 len = ath12k_p2p_noa_ie_len_compute(noa);97 if (!len)98 return;99 100 ie = kmalloc(len, GFP_ATOMIC);101 if (!ie)102 return;103 104 ath12k_p2p_noa_ie_fill(ie, len, noa);105 ath12k_p2p_noa_ie_assign(arvif, ie, len);106}107 108void ath12k_p2p_noa_update(struct ath12k_vif *arvif,109 const struct ath12k_wmi_p2p_noa_info *noa)110{111 struct ath12k *ar = arvif->ar;112 113 spin_lock_bh(&ar->data_lock);114 __ath12k_p2p_noa_update(arvif, noa);115 spin_unlock_bh(&ar->data_lock);116}117 118static void ath12k_p2p_noa_update_vdev_iter(void *data, u8 *mac,119 struct ieee80211_vif *vif)120{121 struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);122 struct ath12k_p2p_noa_arg *arg = data;123 124 if (arvif->ar != arg->ar || arvif->vdev_id != arg->vdev_id)125 return;126 127 ath12k_p2p_noa_update(arvif, arg->noa);128}129 130void ath12k_p2p_noa_update_by_vdev_id(struct ath12k *ar, u32 vdev_id,131 const struct ath12k_wmi_p2p_noa_info *noa)132{133 struct ath12k_p2p_noa_arg arg = {134 .vdev_id = vdev_id,135 .ar = ar,136 .noa = noa,137 };138 139 ieee80211_iterate_active_interfaces_atomic(ath12k_ar_to_hw(ar),140 IEEE80211_IFACE_ITER_NORMAL,141 ath12k_p2p_noa_update_vdev_iter,142 &arg);143}144