146 lines · c
1// SPDX-License-Identifier: ISC2/*3 * Copyright (c) 2015 Qualcomm Atheros, Inc.4 */5 6#include "core.h"7#include "wmi.h"8#include "mac.h"9#include "p2p.h"10 11static void ath10k_p2p_noa_ie_fill(u8 *data, size_t len,12 const struct wmi_p2p_noa_info *noa)13{14 struct ieee80211_p2p_noa_attr *noa_attr;15 u8 ctwindow_oppps = noa->ctwindow_oppps;16 u8 ctwindow = ctwindow_oppps >> WMI_P2P_OPPPS_CTWINDOW_OFFSET;17 bool oppps = !!(ctwindow_oppps & WMI_P2P_OPPPS_ENABLE_BIT);18 __le16 *noa_attr_len;19 u16 attr_len;20 u8 noa_descriptors = noa->num_descriptors;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 = noa->index;37 noa_attr->oppps_ctwindow = ctwindow;38 if (oppps)39 noa_attr->oppps_ctwindow |= IEEE80211_P2P_OPPPS_ENABLE_BIT;40 41 for (i = 0; i < noa_descriptors; i++) {42 noa_attr->desc[i].count =43 __le32_to_cpu(noa->descriptors[i].type_count);44 noa_attr->desc[i].duration = noa->descriptors[i].duration;45 noa_attr->desc[i].interval = noa->descriptors[i].interval;46 noa_attr->desc[i].start_time = noa->descriptors[i].start_time;47 }48 49 attr_len = 2; /* index + oppps_ctwindow */50 attr_len += noa_descriptors * sizeof(struct ieee80211_p2p_noa_desc);51 *noa_attr_len = __cpu_to_le16(attr_len);52}53 54static size_t ath10k_p2p_noa_ie_len_compute(const struct wmi_p2p_noa_info *noa)55{56 size_t len = 0;57 58 if (!noa->num_descriptors &&59 !(noa->ctwindow_oppps & WMI_P2P_OPPPS_ENABLE_BIT))60 return 0;61 62 len += 1 + 1 + 4; /* EID + len + OUI */63 len += 1 + 2; /* noa attr + attr len */64 len += 1 + 1; /* index + oppps_ctwindow */65 len += noa->num_descriptors * sizeof(struct ieee80211_p2p_noa_desc);66 67 return len;68}69 70static void ath10k_p2p_noa_ie_assign(struct ath10k_vif *arvif, void *ie,71 size_t len)72{73 struct ath10k *ar = arvif->ar;74 75 lockdep_assert_held(&ar->data_lock);76 77 kfree(arvif->u.ap.noa_data);78 79 arvif->u.ap.noa_data = ie;80 arvif->u.ap.noa_len = len;81}82 83static void __ath10k_p2p_noa_update(struct ath10k_vif *arvif,84 const struct wmi_p2p_noa_info *noa)85{86 struct ath10k *ar = arvif->ar;87 void *ie;88 size_t len;89 90 lockdep_assert_held(&ar->data_lock);91 92 ath10k_p2p_noa_ie_assign(arvif, NULL, 0);93 94 len = ath10k_p2p_noa_ie_len_compute(noa);95 if (!len)96 return;97 98 ie = kmalloc(len, GFP_ATOMIC);99 if (!ie)100 return;101 102 ath10k_p2p_noa_ie_fill(ie, len, noa);103 ath10k_p2p_noa_ie_assign(arvif, ie, len);104}105 106void ath10k_p2p_noa_update(struct ath10k_vif *arvif,107 const struct wmi_p2p_noa_info *noa)108{109 struct ath10k *ar = arvif->ar;110 111 spin_lock_bh(&ar->data_lock);112 __ath10k_p2p_noa_update(arvif, noa);113 spin_unlock_bh(&ar->data_lock);114}115 116struct ath10k_p2p_noa_arg {117 u32 vdev_id;118 const struct wmi_p2p_noa_info *noa;119};120 121static void ath10k_p2p_noa_update_vdev_iter(void *data, u8 *mac,122 struct ieee80211_vif *vif)123{124 struct ath10k_vif *arvif = (void *)vif->drv_priv;125 struct ath10k_p2p_noa_arg *arg = data;126 127 if (arvif->vdev_id != arg->vdev_id)128 return;129 130 ath10k_p2p_noa_update(arvif, arg->noa);131}132 133void ath10k_p2p_noa_update_by_vdev_id(struct ath10k *ar, u32 vdev_id,134 const struct wmi_p2p_noa_info *noa)135{136 struct ath10k_p2p_noa_arg arg = {137 .vdev_id = vdev_id,138 .noa = noa,139 };140 141 ieee80211_iterate_active_interfaces_atomic(ar->hw,142 ATH10K_ITER_NORMAL_FLAGS,143 ath10k_p2p_noa_update_vdev_iter,144 &arg);145}146