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// SPDX-License-Identifier: BSD-3-Clause-Clear
/*
* Copyright (c) 2024 Qualcomm Innovation Center, Inc. All rights reserved.
*/
#include <net/mac80211.h>
#include "core.h"
#include "mac.h"
#include "p2p.h"
static void ath12k_p2p_noa_ie_fill(u8 *data, size_t len,
const struct ath12k_wmi_p2p_noa_info *noa)
{
struct ieee80211_p2p_noa_attr *noa_attr;
u8 ctwindow = le32_get_bits(noa->noa_attr, WMI_P2P_NOA_INFO_CTWIN_TU);
bool oppps = le32_get_bits(noa->noa_attr, WMI_P2P_NOA_INFO_OPP_PS);
__le16 *noa_attr_len;
u16 attr_len;
u8 noa_descriptors = le32_get_bits(noa->noa_attr,
WMI_P2P_NOA_INFO_DESC_NUM);
int i;
/* P2P IE */
data[0] = WLAN_EID_VENDOR_SPECIFIC;
data[1] = len - 2;
data[2] = (WLAN_OUI_WFA >> 16) & 0xff;
data[3] = (WLAN_OUI_WFA >> 8) & 0xff;
data[4] = (WLAN_OUI_WFA >> 0) & 0xff;
data[5] = WLAN_OUI_TYPE_WFA_P2P;
/* NOA ATTR */
data[6] = IEEE80211_P2P_ATTR_ABSENCE_NOTICE;
noa_attr_len = (__le16 *)&data[7]; /* 2 bytes */
noa_attr = (struct ieee80211_p2p_noa_attr *)&data[9];
noa_attr->index = le32_get_bits(noa->noa_attr,
WMI_P2P_NOA_INFO_INDEX);
noa_attr->oppps_ctwindow = ctwindow;
if (oppps)
noa_attr->oppps_ctwindow |= IEEE80211_P2P_OPPPS_ENABLE_BIT;
for (i = 0; i < noa_descriptors; i++) {
noa_attr->desc[i].count =
__le32_to_cpu(noa->descriptors[i].type_count);
noa_attr->desc[i].duration = noa->descriptors[i].duration;
noa_attr->desc[i].interval = noa->descriptors[i].interval;
noa_attr->desc[i].start_time = noa->descriptors[i].start_time;
}
attr_len = 2; /* index + oppps_ctwindow */
attr_len += noa_descriptors * sizeof(struct ieee80211_p2p_noa_desc);
*noa_attr_len = __cpu_to_le16(attr_len);
}
static size_t ath12k_p2p_noa_ie_len_compute(const struct ath12k_wmi_p2p_noa_info *noa)
{
size_t len = 0;
if (!(le32_get_bits(noa->noa_attr, WMI_P2P_NOA_INFO_DESC_NUM)) &&
!(le32_get_bits(noa->noa_attr, WMI_P2P_NOA_INFO_OPP_PS)))
return 0;
len += 1 + 1 + 4; /* EID + len + OUI */
len += 1 + 2; /* noa attr + attr len */
len += 1 + 1; /* index + oppps_ctwindow */
len += le32_get_bits(noa->noa_attr, WMI_P2P_NOA_INFO_DESC_NUM) *
sizeof(struct ieee80211_p2p_noa_desc);
return len;
}
static void ath12k_p2p_noa_ie_assign(struct ath12k_vif *arvif, void *ie,
size_t len)
{
struct ath12k *ar = arvif->ar;
lockdep_assert_held(&ar->data_lock);
kfree(arvif->u.ap.noa_data);
arvif->u.ap.noa_data = ie;
arvif->u.ap.noa_len = len;
}
static void __ath12k_p2p_noa_update(struct ath12k_vif *arvif,
const struct ath12k_wmi_p2p_noa_info *noa)
{
struct ath12k *ar = arvif->ar;
void *ie;
size_t len;
lockdep_assert_held(&ar->data_lock);
ath12k_p2p_noa_ie_assign(arvif, NULL, 0);
len = ath12k_p2p_noa_ie_len_compute(noa);
if (!len)
return;
ie = kmalloc(len, GFP_ATOMIC);
if (!ie)
return;
ath12k_p2p_noa_ie_fill(ie, len, noa);
ath12k_p2p_noa_ie_assign(arvif, ie, len);
}
void ath12k_p2p_noa_update(struct ath12k_vif *arvif,
const struct ath12k_wmi_p2p_noa_info *noa)
{
struct ath12k *ar = arvif->ar;
spin_lock_bh(&ar->data_lock);
__ath12k_p2p_noa_update(arvif, noa);
spin_unlock_bh(&ar->data_lock);
}
static void ath12k_p2p_noa_update_vdev_iter(void *data, u8 *mac,
struct ieee80211_vif *vif)
{
struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
struct ath12k_p2p_noa_arg *arg = data;
if (arvif->ar != arg->ar || arvif->vdev_id != arg->vdev_id)
return;
ath12k_p2p_noa_update(arvif, arg->noa);
}
void ath12k_p2p_noa_update_by_vdev_id(struct ath12k *ar, u32 vdev_id,
const struct ath12k_wmi_p2p_noa_info *noa)
{
struct ath12k_p2p_noa_arg arg = {
.vdev_id = vdev_id,
.ar = ar,
.noa = noa,
};
ieee80211_iterate_active_interfaces_atomic(ath12k_ar_to_hw(ar),
IEEE80211_IFACE_ITER_NORMAL,
ath12k_p2p_noa_update_vdev_iter,
&arg);
}
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