157 lines
4.2 KiB
C
157 lines
4.2 KiB
C
/*
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* Copyright (c) 2015 Qualcomm Atheros, Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "core.h"
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#include "wmi.h"
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#include "mac.h"
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#include "p2p.h"
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static void ath10k_p2p_noa_ie_fill(u8 *data, size_t len,
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const struct wmi_p2p_noa_info *noa)
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{
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struct ieee80211_p2p_noa_attr *noa_attr;
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u8 ctwindow_oppps = noa->ctwindow_oppps;
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u8 ctwindow = ctwindow_oppps >> WMI_P2P_OPPPS_CTWINDOW_OFFSET;
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bool oppps = !!(ctwindow_oppps & WMI_P2P_OPPPS_ENABLE_BIT);
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__le16 *noa_attr_len;
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u16 attr_len;
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u8 noa_descriptors = noa->num_descriptors;
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int i;
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/* P2P IE */
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data[0] = WLAN_EID_VENDOR_SPECIFIC;
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data[1] = len - 2;
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data[2] = (WLAN_OUI_WFA >> 16) & 0xff;
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data[3] = (WLAN_OUI_WFA >> 8) & 0xff;
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data[4] = (WLAN_OUI_WFA >> 0) & 0xff;
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data[5] = WLAN_OUI_TYPE_WFA_P2P;
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/* NOA ATTR */
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data[6] = IEEE80211_P2P_ATTR_ABSENCE_NOTICE;
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noa_attr_len = (__le16 *)&data[7]; /* 2 bytes */
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noa_attr = (struct ieee80211_p2p_noa_attr *)&data[9];
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noa_attr->index = noa->index;
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noa_attr->oppps_ctwindow = ctwindow;
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if (oppps)
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noa_attr->oppps_ctwindow |= IEEE80211_P2P_OPPPS_ENABLE_BIT;
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for (i = 0; i < noa_descriptors; i++) {
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noa_attr->desc[i].count =
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__le32_to_cpu(noa->descriptors[i].type_count);
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noa_attr->desc[i].duration = noa->descriptors[i].duration;
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noa_attr->desc[i].interval = noa->descriptors[i].interval;
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noa_attr->desc[i].start_time = noa->descriptors[i].start_time;
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}
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attr_len = 2; /* index + oppps_ctwindow */
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attr_len += noa_descriptors * sizeof(struct ieee80211_p2p_noa_desc);
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*noa_attr_len = __cpu_to_le16(attr_len);
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}
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static size_t ath10k_p2p_noa_ie_len_compute(const struct wmi_p2p_noa_info *noa)
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{
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size_t len = 0;
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if (!noa->num_descriptors &&
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!(noa->ctwindow_oppps & WMI_P2P_OPPPS_ENABLE_BIT))
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return 0;
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len += 1 + 1 + 4; /* EID + len + OUI */
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len += 1 + 2; /* noa attr + attr len */
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len += 1 + 1; /* index + oppps_ctwindow */
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len += noa->num_descriptors * sizeof(struct ieee80211_p2p_noa_desc);
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return len;
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}
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static void ath10k_p2p_noa_ie_assign(struct ath10k_vif *arvif, void *ie,
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size_t len)
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{
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struct ath10k *ar = arvif->ar;
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lockdep_assert_held(&ar->data_lock);
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kfree(arvif->u.ap.noa_data);
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arvif->u.ap.noa_data = ie;
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arvif->u.ap.noa_len = len;
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}
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static void __ath10k_p2p_noa_update(struct ath10k_vif *arvif,
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const struct wmi_p2p_noa_info *noa)
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{
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struct ath10k *ar = arvif->ar;
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void *ie;
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size_t len;
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lockdep_assert_held(&ar->data_lock);
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ath10k_p2p_noa_ie_assign(arvif, NULL, 0);
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len = ath10k_p2p_noa_ie_len_compute(noa);
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if (!len)
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return;
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ie = kmalloc(len, GFP_ATOMIC);
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if (!ie)
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return;
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ath10k_p2p_noa_ie_fill(ie, len, noa);
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ath10k_p2p_noa_ie_assign(arvif, ie, len);
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}
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void ath10k_p2p_noa_update(struct ath10k_vif *arvif,
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const struct wmi_p2p_noa_info *noa)
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{
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struct ath10k *ar = arvif->ar;
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spin_lock_bh(&ar->data_lock);
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__ath10k_p2p_noa_update(arvif, noa);
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spin_unlock_bh(&ar->data_lock);
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}
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struct ath10k_p2p_noa_arg {
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u32 vdev_id;
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const struct wmi_p2p_noa_info *noa;
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};
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static void ath10k_p2p_noa_update_vdev_iter(void *data, u8 *mac,
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struct ieee80211_vif *vif)
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{
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struct ath10k_vif *arvif = (void *)vif->drv_priv;
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struct ath10k_p2p_noa_arg *arg = data;
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if (arvif->vdev_id != arg->vdev_id)
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return;
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ath10k_p2p_noa_update(arvif, arg->noa);
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}
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void ath10k_p2p_noa_update_by_vdev_id(struct ath10k *ar, u32 vdev_id,
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const struct wmi_p2p_noa_info *noa)
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{
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struct ath10k_p2p_noa_arg arg = {
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.vdev_id = vdev_id,
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.noa = noa,
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};
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ieee80211_iterate_active_interfaces_atomic(ar->hw,
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IEEE80211_IFACE_ITER_NORMAL,
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ath10k_p2p_noa_update_vdev_iter,
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&arg);
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}
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