1 // SPDX-License-Identifier: BSD-3-Clause-Clear 2 /* 3 * Copyright (c) 2024 Qualcomm Innovation Center, Inc. All rights reserved. 4 */ 5 6 #include "core.h" 7 #include "wmi.h" 8 #include "mac.h" 9 #include "p2p.h" 10 11 static void ath11k_p2p_noa_ie_fill(u8 *data, size_t len, 12 const struct ath11k_wmi_p2p_noa_info *noa) 13 { 14 struct ieee80211_p2p_noa_attr *noa_attr; 15 u8 noa_descriptors, ctwindow; 16 bool oppps; 17 __le16 *noa_attr_len; 18 u16 attr_len; 19 int i; 20 21 ctwindow = u32_get_bits(noa->noa_attr, WMI_P2P_NOA_INFO_CTWIN_TU); 22 oppps = u32_get_bits(noa->noa_attr, WMI_P2P_NOA_INFO_OPP_PS); 23 noa_descriptors = u32_get_bits(noa->noa_attr, 24 WMI_P2P_NOA_INFO_DESC_NUM); 25 26 /* P2P IE */ 27 data[0] = WLAN_EID_VENDOR_SPECIFIC; 28 data[1] = len - 2; 29 data[2] = (WLAN_OUI_WFA >> 16) & 0xff; 30 data[3] = (WLAN_OUI_WFA >> 8) & 0xff; 31 data[4] = (WLAN_OUI_WFA >> 0) & 0xff; 32 data[5] = WLAN_OUI_TYPE_WFA_P2P; 33 34 /* NOA ATTR */ 35 data[6] = IEEE80211_P2P_ATTR_ABSENCE_NOTICE; 36 noa_attr_len = (__le16 *)&data[7]; /* 2 bytes */ 37 noa_attr = (struct ieee80211_p2p_noa_attr *)&data[9]; 38 39 noa_attr->index = u32_get_bits(noa->noa_attr, 40 WMI_P2P_NOA_INFO_INDEX); 41 noa_attr->oppps_ctwindow = ctwindow; 42 if (oppps) 43 noa_attr->oppps_ctwindow |= IEEE80211_P2P_OPPPS_ENABLE_BIT; 44 45 for (i = 0; i < noa_descriptors; i++) { 46 noa_attr->desc[i].count = noa->descriptors[i].type_count; 47 noa_attr->desc[i].duration = 48 cpu_to_le32(noa->descriptors[i].duration); 49 noa_attr->desc[i].interval = 50 cpu_to_le32(noa->descriptors[i].interval); 51 noa_attr->desc[i].start_time = 52 cpu_to_le32(noa->descriptors[i].start_time); 53 } 54 55 attr_len = 2; /* index + oppps_ctwindow */ 56 attr_len += noa_descriptors * sizeof(struct ieee80211_p2p_noa_desc); 57 *noa_attr_len = __cpu_to_le16(attr_len); 58 } 59 60 static size_t 61 ath11k_p2p_noa_ie_len_compute(const struct ath11k_wmi_p2p_noa_info *noa) 62 { 63 size_t len = 0; 64 u8 noa_descriptors = u32_get_bits(noa->noa_attr, 65 WMI_P2P_NOA_INFO_DESC_NUM); 66 67 if (!(noa_descriptors) && 68 !(u32_get_bits(noa->noa_attr, WMI_P2P_NOA_INFO_OPP_PS))) 69 return 0; 70 71 len += 1 + 1 + 4; /* EID + len + OUI */ 72 len += 1 + 2; /* noa attr + attr len */ 73 len += 1 + 1; /* index + oppps_ctwindow */ 74 len += noa_descriptors * 75 sizeof(struct ieee80211_p2p_noa_desc); 76 77 return len; 78 } 79 80 static void ath11k_p2p_noa_ie_assign(struct ath11k_vif *arvif, void *ie, 81 size_t len) 82 { 83 struct ath11k *ar = arvif->ar; 84 85 lockdep_assert_held(&ar->data_lock); 86 87 kfree(arvif->u.ap.noa_data); 88 89 arvif->u.ap.noa_data = ie; 90 arvif->u.ap.noa_len = len; 91 } 92 93 static void __ath11k_p2p_noa_update(struct ath11k_vif *arvif, 94 const struct ath11k_wmi_p2p_noa_info *noa) 95 { 96 struct ath11k *ar = arvif->ar; 97 void *ie; 98 size_t len; 99 100 lockdep_assert_held(&ar->data_lock); 101 102 ath11k_p2p_noa_ie_assign(arvif, NULL, 0); 103 104 len = ath11k_p2p_noa_ie_len_compute(noa); 105 if (!len) 106 return; 107 108 ie = kmalloc(len, GFP_ATOMIC); 109 if (!ie) 110 return; 111 112 ath11k_p2p_noa_ie_fill(ie, len, noa); 113 ath11k_p2p_noa_ie_assign(arvif, ie, len); } 114 115 void ath11k_p2p_noa_update(struct ath11k_vif *arvif, 116 const struct ath11k_wmi_p2p_noa_info *noa) 117 { 118 struct ath11k *ar = arvif->ar; 119 120 spin_lock_bh(&ar->data_lock); 121 __ath11k_p2p_noa_update(arvif, noa); 122 spin_unlock_bh(&ar->data_lock); 123 } 124 125 static void ath11k_p2p_noa_update_vdev_iter(void *data, u8 *mac, 126 struct ieee80211_vif *vif) 127 { 128 struct ath11k_vif *arvif = ath11k_vif_to_arvif(vif); 129 struct ath11k_p2p_noa_arg *arg = data; 130 131 if (arvif->vdev_id != arg->vdev_id) 132 return; 133 134 ath11k_p2p_noa_update(arvif, arg->noa); 135 } 136 137 void ath11k_p2p_noa_update_by_vdev_id(struct ath11k *ar, u32 vdev_id, 138 const struct ath11k_wmi_p2p_noa_info *noa) 139 { 140 struct ath11k_p2p_noa_arg arg = { 141 .vdev_id = vdev_id, 142 .noa = noa, 143 }; 144 145 ieee80211_iterate_active_interfaces_atomic(ar->hw, 146 IEEE80211_IFACE_ITER_NORMAL, 147 ath11k_p2p_noa_update_vdev_iter, 148 &arg); 149 } 150