1 /*
2 * Copyright (c) 2017-2020 The Linux Foundation. All rights reserved.
3 * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
4 *
5 * Permission to use, copy, modify, and/or distribute this software for
6 * any purpose with or without fee is hereby granted, provided that the
7 * above copyright notice and this permission notice appear in all
8 * copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
11 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
12 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
13 * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
14 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
15 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
16 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17 * PERFORMANCE OF THIS SOFTWARE.
18 */
19
20 /**
21 * DOC: Implements public API for PMO GTK offload feature to interact
22 * with target/wmi.
23 */
24
25 #include "wlan_pmo_tgt_api.h"
26 #include "wlan_pmo_gtk_public_struct.h"
27 #include "wlan_pmo_obj_mgmt_public_struct.h"
28 #include "wlan_pmo_main.h"
29
pmo_tgt_send_gtk_offload_req(struct wlan_objmgr_vdev * vdev,struct pmo_gtk_req * gtk_req)30 QDF_STATUS pmo_tgt_send_gtk_offload_req(struct wlan_objmgr_vdev *vdev,
31 struct pmo_gtk_req *gtk_req)
32 {
33 struct pmo_gtk_req *op_gtk_req = NULL;
34 QDF_STATUS status;
35 struct wlan_objmgr_psoc *psoc;
36 struct pmo_vdev_priv_obj *vdev_ctx;
37 struct wlan_pmo_tx_ops pmo_tx_ops;
38
39 pmo_enter();
40 psoc = wlan_vdev_get_psoc(vdev);
41 if (!psoc) {
42 pmo_err("Failed to find psoc from from vdev:%pK",
43 vdev);
44 status = QDF_STATUS_E_INVAL;
45 goto out;
46 }
47
48 vdev_ctx = pmo_vdev_get_priv(vdev);
49
50 pmo_tx_ops = GET_PMO_TX_OPS_FROM_PSOC(psoc);
51 if (!pmo_tx_ops.send_gtk_offload_req) {
52 pmo_err("send_gtk_offload_req is null");
53 status = QDF_STATUS_E_NULL_VALUE;
54 goto out;
55 }
56
57 op_gtk_req = qdf_mem_malloc(sizeof(*op_gtk_req));
58 if (!op_gtk_req) {
59 status = QDF_STATUS_E_NOMEM;
60 goto out;
61 }
62
63 if (gtk_req->flags == PMO_GTK_OFFLOAD_ENABLE) {
64 qdf_atomic_set(&vdev_ctx->gtk_err_enable, true);
65 qdf_mem_copy(op_gtk_req->kck, gtk_req->kck,
66 gtk_req->kck_len);
67 op_gtk_req->kck_len = gtk_req->kck_len;
68 qdf_mem_copy(op_gtk_req->kek, gtk_req->kek,
69 PMO_KEK_LEN);
70 op_gtk_req->kek_len = gtk_req->kek_len;
71 qdf_mem_copy(&op_gtk_req->replay_counter,
72 >k_req->replay_counter, PMO_REPLAY_COUNTER_LEN);
73 } else {
74 qdf_atomic_set(&vdev_ctx->gtk_err_enable, false);
75 }
76
77 pmo_debug("replay counter %llu", op_gtk_req->replay_counter);
78 op_gtk_req->flags = gtk_req->flags;
79 status = pmo_tx_ops.send_gtk_offload_req(vdev, op_gtk_req);
80 if (status != QDF_STATUS_SUCCESS)
81 pmo_err("Failed to send gtk offload req event");
82 out:
83 if (op_gtk_req)
84 qdf_mem_free(op_gtk_req);
85 pmo_exit();
86
87 return status;
88 }
89
pmo_tgt_get_gtk_rsp(struct wlan_objmgr_vdev * vdev)90 QDF_STATUS pmo_tgt_get_gtk_rsp(struct wlan_objmgr_vdev *vdev)
91 {
92
93 struct wlan_objmgr_psoc *psoc;
94 QDF_STATUS status;
95 struct wlan_pmo_tx_ops pmo_tx_ops;
96
97 pmo_enter();
98 psoc = wlan_vdev_get_psoc(vdev);
99 if (!psoc) {
100 pmo_err("Failed to find psoc from from vdev:%pK",
101 vdev);
102 status = QDF_STATUS_E_NULL_VALUE;
103 goto out;
104 }
105
106 pmo_tx_ops = GET_PMO_TX_OPS_FROM_PSOC(psoc);
107 if (!pmo_tx_ops.send_get_gtk_rsp_cmd) {
108 pmo_err("send_get_gtk_rsp_cmd is null");
109 status = QDF_STATUS_E_NULL_VALUE;
110 goto out;
111 }
112 status = pmo_tx_ops.send_get_gtk_rsp_cmd(vdev);
113 if (status != QDF_STATUS_SUCCESS)
114 pmo_err("Failed to send_get_gtk_rsp_cmd event");
115 out:
116 pmo_exit();
117
118 return status;
119 }
120
pmo_tgt_gtk_rsp_evt(struct wlan_objmgr_psoc * psoc,struct pmo_gtk_rsp_params * rsp_param)121 QDF_STATUS pmo_tgt_gtk_rsp_evt(struct wlan_objmgr_psoc *psoc,
122 struct pmo_gtk_rsp_params *rsp_param)
123 {
124 QDF_STATUS status;
125 struct wlan_objmgr_vdev *vdev;
126 struct pmo_vdev_priv_obj *vdev_ctx;
127
128 pmo_enter();
129 if (!rsp_param) {
130 pmo_err("gtk rsp param is null");
131 status = QDF_STATUS_E_NULL_VALUE;
132 goto out;
133 }
134
135 vdev = wlan_objmgr_get_vdev_by_id_from_psoc(psoc, rsp_param->vdev_id,
136 WLAN_PMO_ID);
137 if (!vdev) {
138 pmo_err("vdev is null vdev_id:%d psoc:%pK",
139 rsp_param->vdev_id, psoc);
140 status = QDF_STATUS_E_NULL_VALUE;
141 goto out;
142 }
143
144 vdev_ctx = pmo_vdev_get_priv(vdev);
145
146 status = pmo_get_vdev_bss_peer_mac_addr(vdev, &rsp_param->bssid);
147 if (status != QDF_STATUS_SUCCESS) {
148 pmo_err("cannot find peer mac address");
149 goto dec_ref;
150 }
151
152 /* update cached replay counter */
153 qdf_spin_lock_bh(&vdev_ctx->pmo_vdev_lock);
154 vdev_ctx->vdev_gtk_req.replay_counter = rsp_param->replay_counter;
155 qdf_spin_unlock_bh(&vdev_ctx->pmo_vdev_lock);
156
157 if (vdev_ctx->vdev_gtk_rsp_req.callback) {
158 pmo_debug("callback:%pK context:%pK psoc:%pK vdev_id:%d",
159 vdev_ctx->vdev_gtk_rsp_req.callback,
160 vdev_ctx->vdev_gtk_rsp_req.callback_context,
161 psoc, rsp_param->vdev_id);
162 vdev_ctx->vdev_gtk_rsp_req.callback(
163 vdev_ctx->vdev_gtk_rsp_req.callback_context,
164 rsp_param);
165 } else {
166 pmo_err("gtk rsp callback is null for vdev_id:%d psoc %pK",
167 rsp_param->vdev_id,
168 psoc);
169 }
170
171 dec_ref:
172 wlan_objmgr_vdev_release_ref(vdev, WLAN_PMO_ID);
173 out:
174 pmo_exit();
175
176 return status;
177 }
178
179