Michal Kazior | 6a94888 | 2015-02-26 13:23:17 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2015 Qualcomm Atheros, Inc. |
| 3 | * |
| 4 | * Permission to use, copy, modify, and/or distribute this software for any |
| 5 | * purpose with or without fee is hereby granted, provided that the above |
| 6 | * copyright notice and this permission notice appear in all copies. |
| 7 | * |
| 8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 15 | */ |
| 16 | |
| 17 | #include "core.h" |
| 18 | #include "wmi.h" |
Michal Kazior | fe3cbdf | 2015-02-26 13:23:18 +0100 | [diff] [blame] | 19 | #include "mac.h" |
Michal Kazior | 6a94888 | 2015-02-26 13:23:17 +0100 | [diff] [blame] | 20 | #include "p2p.h" |
| 21 | |
| 22 | static void ath10k_p2p_noa_ie_fill(u8 *data, size_t len, |
| 23 | const struct wmi_p2p_noa_info *noa) |
| 24 | { |
| 25 | struct ieee80211_p2p_noa_attr *noa_attr; |
| 26 | u8 ctwindow_oppps = noa->ctwindow_oppps; |
| 27 | u8 ctwindow = ctwindow_oppps >> WMI_P2P_OPPPS_CTWINDOW_OFFSET; |
| 28 | bool oppps = !!(ctwindow_oppps & WMI_P2P_OPPPS_ENABLE_BIT); |
| 29 | __le16 *noa_attr_len; |
| 30 | u16 attr_len; |
| 31 | u8 noa_descriptors = noa->num_descriptors; |
| 32 | int i; |
| 33 | |
| 34 | /* P2P IE */ |
| 35 | data[0] = WLAN_EID_VENDOR_SPECIFIC; |
| 36 | data[1] = len - 2; |
| 37 | data[2] = (WLAN_OUI_WFA >> 16) & 0xff; |
| 38 | data[3] = (WLAN_OUI_WFA >> 8) & 0xff; |
| 39 | data[4] = (WLAN_OUI_WFA >> 0) & 0xff; |
| 40 | data[5] = WLAN_OUI_TYPE_WFA_P2P; |
| 41 | |
| 42 | /* NOA ATTR */ |
| 43 | data[6] = IEEE80211_P2P_ATTR_ABSENCE_NOTICE; |
| 44 | noa_attr_len = (__le16 *)&data[7]; /* 2 bytes */ |
| 45 | noa_attr = (struct ieee80211_p2p_noa_attr *)&data[9]; |
| 46 | |
| 47 | noa_attr->index = noa->index; |
| 48 | noa_attr->oppps_ctwindow = ctwindow; |
| 49 | if (oppps) |
| 50 | noa_attr->oppps_ctwindow |= IEEE80211_P2P_OPPPS_ENABLE_BIT; |
| 51 | |
| 52 | for (i = 0; i < noa_descriptors; i++) { |
| 53 | noa_attr->desc[i].count = |
| 54 | __le32_to_cpu(noa->descriptors[i].type_count); |
| 55 | noa_attr->desc[i].duration = noa->descriptors[i].duration; |
| 56 | noa_attr->desc[i].interval = noa->descriptors[i].interval; |
| 57 | noa_attr->desc[i].start_time = noa->descriptors[i].start_time; |
| 58 | } |
| 59 | |
| 60 | attr_len = 2; /* index + oppps_ctwindow */ |
| 61 | attr_len += noa_descriptors * sizeof(struct ieee80211_p2p_noa_desc); |
| 62 | *noa_attr_len = __cpu_to_le16(attr_len); |
| 63 | } |
| 64 | |
| 65 | static size_t ath10k_p2p_noa_ie_len_compute(const struct wmi_p2p_noa_info *noa) |
| 66 | { |
| 67 | size_t len = 0; |
| 68 | |
| 69 | if (!noa->num_descriptors && |
| 70 | !(noa->ctwindow_oppps & WMI_P2P_OPPPS_ENABLE_BIT)) |
| 71 | return 0; |
| 72 | |
| 73 | len += 1 + 1 + 4; /* EID + len + OUI */ |
| 74 | len += 1 + 2; /* noa attr + attr len */ |
| 75 | len += 1 + 1; /* index + oppps_ctwindow */ |
| 76 | len += noa->num_descriptors * sizeof(struct ieee80211_p2p_noa_desc); |
| 77 | |
| 78 | return len; |
| 79 | } |
| 80 | |
| 81 | static void ath10k_p2p_noa_ie_assign(struct ath10k_vif *arvif, void *ie, |
| 82 | size_t len) |
| 83 | { |
| 84 | struct ath10k *ar = arvif->ar; |
| 85 | |
| 86 | lockdep_assert_held(&ar->data_lock); |
| 87 | |
| 88 | kfree(arvif->u.ap.noa_data); |
| 89 | |
| 90 | arvif->u.ap.noa_data = ie; |
| 91 | arvif->u.ap.noa_len = len; |
| 92 | } |
| 93 | |
| 94 | static void __ath10k_p2p_noa_update(struct ath10k_vif *arvif, |
| 95 | const struct wmi_p2p_noa_info *noa) |
| 96 | { |
| 97 | struct ath10k *ar = arvif->ar; |
| 98 | void *ie; |
| 99 | size_t len; |
| 100 | |
| 101 | lockdep_assert_held(&ar->data_lock); |
| 102 | |
| 103 | ath10k_p2p_noa_ie_assign(arvif, NULL, 0); |
| 104 | |
| 105 | len = ath10k_p2p_noa_ie_len_compute(noa); |
| 106 | if (!len) |
| 107 | return; |
| 108 | |
| 109 | ie = kmalloc(len, GFP_ATOMIC); |
| 110 | if (!ie) |
| 111 | return; |
| 112 | |
| 113 | ath10k_p2p_noa_ie_fill(ie, len, noa); |
| 114 | ath10k_p2p_noa_ie_assign(arvif, ie, len); |
| 115 | } |
| 116 | |
| 117 | void ath10k_p2p_noa_update(struct ath10k_vif *arvif, |
| 118 | const struct wmi_p2p_noa_info *noa) |
| 119 | { |
| 120 | struct ath10k *ar = arvif->ar; |
| 121 | |
| 122 | spin_lock_bh(&ar->data_lock); |
| 123 | __ath10k_p2p_noa_update(arvif, noa); |
| 124 | spin_unlock_bh(&ar->data_lock); |
| 125 | } |
Michal Kazior | fe3cbdf | 2015-02-26 13:23:18 +0100 | [diff] [blame] | 126 | |
| 127 | struct ath10k_p2p_noa_arg { |
| 128 | u32 vdev_id; |
| 129 | const struct wmi_p2p_noa_info *noa; |
| 130 | }; |
| 131 | |
| 132 | static void ath10k_p2p_noa_update_vdev_iter(void *data, u8 *mac, |
| 133 | struct ieee80211_vif *vif) |
| 134 | { |
| 135 | struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); |
| 136 | struct ath10k_p2p_noa_arg *arg = data; |
| 137 | |
| 138 | if (arvif->vdev_id != arg->vdev_id) |
| 139 | return; |
| 140 | |
| 141 | ath10k_p2p_noa_update(arvif, arg->noa); |
| 142 | } |
| 143 | |
| 144 | void ath10k_p2p_noa_update_by_vdev_id(struct ath10k *ar, u32 vdev_id, |
| 145 | const struct wmi_p2p_noa_info *noa) |
| 146 | { |
| 147 | struct ath10k_p2p_noa_arg arg = { |
| 148 | .vdev_id = vdev_id, |
| 149 | .noa = noa, |
| 150 | }; |
| 151 | |
| 152 | ieee80211_iterate_active_interfaces_atomic(ar->hw, |
| 153 | IEEE80211_IFACE_ITER_NORMAL, |
| 154 | ath10k_p2p_noa_update_vdev_iter, |
| 155 | &arg); |
| 156 | } |