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
ath11k_p2p_noa_ie_fill(u8 * data,size_t len,const struct ath11k_wmi_p2p_noa_info * noa)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
ath11k_p2p_noa_ie_len_compute(const struct ath11k_wmi_p2p_noa_info * noa)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
ath11k_p2p_noa_ie_assign(struct ath11k_vif * arvif,void * ie,size_t len)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
__ath11k_p2p_noa_update(struct ath11k_vif * arvif,const struct ath11k_wmi_p2p_noa_info * noa)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
ath11k_p2p_noa_update(struct ath11k_vif * arvif,const struct ath11k_wmi_p2p_noa_info * noa)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
ath11k_p2p_noa_update_vdev_iter(void * data,u8 * mac,struct ieee80211_vif * vif)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
ath11k_p2p_noa_update_by_vdev_id(struct ath11k * ar,u32 vdev_id,const struct ath11k_wmi_p2p_noa_info * noa)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