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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
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
32 data[6] = IEEE80211_P2P_ATTR_ABSENCE_NOTICE;
33 noa_attr_len = (__le16 *)&data[7];
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;
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;
63 len += 1 + 2;
64 len += 1 + 1;
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
