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1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2/*
3 * Copyright (C) 2012-2014, 2020 Intel Corporation
4 * Copyright (C) 2016 Intel Deutschland GmbH
5 * Copyright (C) 2022 Intel Corporation
6 */
7#include <net/mac80211.h>
8#include "fw-api.h"
9#include "mvm.h"
10
11struct iwl_mvm_iface_iterator_data {
12 struct ieee80211_vif *ignore_vif;
13 int idx;
14
15 struct iwl_mvm_phy_ctxt *phyctxt;
16
17 u16 ids[MAX_MACS_IN_BINDING];
18 u16 colors[MAX_MACS_IN_BINDING];
19};
20
21static int iwl_mvm_binding_cmd(struct iwl_mvm *mvm, u32 action,
22 struct iwl_mvm_iface_iterator_data *data)
23{
24 struct iwl_binding_cmd cmd;
25 struct iwl_mvm_phy_ctxt *phyctxt = data->phyctxt;
26 int i, ret;
27 u32 status;
28 int size;
29
30 memset(&cmd, 0, sizeof(cmd));
31
32 if (fw_has_capa(&mvm->fw->ucode_capa,
33 IWL_UCODE_TLV_CAPA_BINDING_CDB_SUPPORT)) {
34 size = sizeof(cmd);
35 cmd.lmac_id = cpu_to_le32(iwl_mvm_get_lmac_id(mvm,
36 phyctxt->channel->band));
37 } else {
38 size = IWL_BINDING_CMD_SIZE_V1;
39 }
40
41 cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(phyctxt->id,
42 phyctxt->color));
43 cmd.action = cpu_to_le32(action);
44 cmd.phy = cpu_to_le32(FW_CMD_ID_AND_COLOR(phyctxt->id,
45 phyctxt->color));
46
47 for (i = 0; i < MAX_MACS_IN_BINDING; i++)
48 cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
49 for (i = 0; i < data->idx; i++)
50 cmd.macs[i] = cpu_to_le32(FW_CMD_ID_AND_COLOR(data->ids[i],
51 data->colors[i]));
52
53 status = 0;
54 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
55 size, &cmd, &status);
56 if (ret) {
57 IWL_ERR(mvm, "Failed to send binding (action:%d): %d\n",
58 action, ret);
59 return ret;
60 }
61
62 if (status) {
63 IWL_ERR(mvm, "Binding command failed: %u\n", status);
64 ret = -EIO;
65 }
66
67 return ret;
68}
69
70static void iwl_mvm_iface_iterator(void *_data, u8 *mac,
71 struct ieee80211_vif *vif)
72{
73 struct iwl_mvm_iface_iterator_data *data = _data;
74 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
75
76 if (vif == data->ignore_vif)
77 return;
78
79 if (mvmvif->deflink.phy_ctxt != data->phyctxt)
80 return;
81
82 if (WARN_ON_ONCE(data->idx >= MAX_MACS_IN_BINDING))
83 return;
84
85 data->ids[data->idx] = mvmvif->id;
86 data->colors[data->idx] = mvmvif->color;
87 data->idx++;
88}
89
90static int iwl_mvm_binding_update(struct iwl_mvm *mvm,
91 struct ieee80211_vif *vif,
92 struct iwl_mvm_phy_ctxt *phyctxt,
93 bool add)
94{
95 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
96 struct iwl_mvm_iface_iterator_data data = {
97 .ignore_vif = vif,
98 .phyctxt = phyctxt,
99 };
100 u32 action = FW_CTXT_ACTION_MODIFY;
101
102 lockdep_assert_held(&mvm->mutex);
103
104 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
105 IEEE80211_IFACE_ITER_NORMAL,
106 iwl_mvm_iface_iterator,
107 &data);
108
109 /*
110 * If there are no other interfaces yet we
111 * need to create a new binding.
112 */
113 if (data.idx == 0) {
114 if (add)
115 action = FW_CTXT_ACTION_ADD;
116 else
117 action = FW_CTXT_ACTION_REMOVE;
118 }
119
120 if (add) {
121 if (WARN_ON_ONCE(data.idx >= MAX_MACS_IN_BINDING))
122 return -EINVAL;
123
124 data.ids[data.idx] = mvmvif->id;
125 data.colors[data.idx] = mvmvif->color;
126 data.idx++;
127 }
128
129 return iwl_mvm_binding_cmd(mvm, action, &data);
130}
131
132int iwl_mvm_binding_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
133{
134 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
135
136 if (WARN_ON_ONCE(!mvmvif->deflink.phy_ctxt))
137 return -EINVAL;
138
139 /*
140 * Update SF - Disable if needed. if this fails, SF might still be on
141 * while many macs are bound, which is forbidden - so fail the binding.
142 */
143 if (iwl_mvm_sf_update(mvm, vif, false))
144 return -EINVAL;
145
146 return iwl_mvm_binding_update(mvm, vif, mvmvif->deflink.phy_ctxt,
147 true);
148}
149
150int iwl_mvm_binding_remove_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
151{
152 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
153 int ret;
154
155 if (WARN_ON_ONCE(!mvmvif->deflink.phy_ctxt))
156 return -EINVAL;
157
158 ret = iwl_mvm_binding_update(mvm, vif, mvmvif->deflink.phy_ctxt,
159 false);
160
161 if (!ret)
162 if (iwl_mvm_sf_update(mvm, vif, true))
163 IWL_ERR(mvm, "Failed to update SF state\n");
164
165 return ret;
166}
167
168u32 iwl_mvm_get_lmac_id(struct iwl_mvm *mvm, enum nl80211_band band)
169{
170 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_CDB_SUPPORT) ||
171 band == NL80211_BAND_2GHZ)
172 return IWL_LMAC_24G_INDEX;
173 return IWL_LMAC_5G_INDEX;
174}
1/******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2016 Intel Deutschland GmbH
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
23 * USA
24 *
25 * The full GNU General Public License is included in this distribution
26 * in the file called COPYING.
27 *
28 * Contact Information:
29 * Intel Linux Wireless <linuxwifi@intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
31 *
32 * BSD LICENSE
33 *
34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
35 * Copyright(c) 2016 Intel Deutschland GmbH
36 * All rights reserved.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 *
42 * * Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * * Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in
46 * the documentation and/or other materials provided with the
47 * distribution.
48 * * Neither the name Intel Corporation nor the names of its
49 * contributors may be used to endorse or promote products derived
50 * from this software without specific prior written permission.
51 *
52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
63 *
64 *****************************************************************************/
65
66#include <net/mac80211.h>
67#include "fw-api.h"
68#include "mvm.h"
69
70struct iwl_mvm_iface_iterator_data {
71 struct ieee80211_vif *ignore_vif;
72 int idx;
73
74 struct iwl_mvm_phy_ctxt *phyctxt;
75
76 u16 ids[MAX_MACS_IN_BINDING];
77 u16 colors[MAX_MACS_IN_BINDING];
78};
79
80static int iwl_mvm_binding_cmd(struct iwl_mvm *mvm, u32 action,
81 struct iwl_mvm_iface_iterator_data *data)
82{
83 struct iwl_binding_cmd cmd;
84 struct iwl_mvm_phy_ctxt *phyctxt = data->phyctxt;
85 int i, ret;
86 u32 status;
87 int size;
88
89 memset(&cmd, 0, sizeof(cmd));
90
91 if (fw_has_capa(&mvm->fw->ucode_capa,
92 IWL_UCODE_TLV_CAPA_BINDING_CDB_SUPPORT)) {
93 size = sizeof(cmd);
94 if (phyctxt->channel->band == NL80211_BAND_2GHZ ||
95 !iwl_mvm_is_cdb_supported(mvm))
96 cmd.lmac_id = cpu_to_le32(IWL_LMAC_24G_INDEX);
97 else
98 cmd.lmac_id = cpu_to_le32(IWL_LMAC_5G_INDEX);
99 } else {
100 size = IWL_BINDING_CMD_SIZE_V1;
101 }
102
103 cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(phyctxt->id,
104 phyctxt->color));
105 cmd.action = cpu_to_le32(action);
106 cmd.phy = cpu_to_le32(FW_CMD_ID_AND_COLOR(phyctxt->id,
107 phyctxt->color));
108
109 for (i = 0; i < MAX_MACS_IN_BINDING; i++)
110 cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
111 for (i = 0; i < data->idx; i++)
112 cmd.macs[i] = cpu_to_le32(FW_CMD_ID_AND_COLOR(data->ids[i],
113 data->colors[i]));
114
115 status = 0;
116 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
117 size, &cmd, &status);
118 if (ret) {
119 IWL_ERR(mvm, "Failed to send binding (action:%d): %d\n",
120 action, ret);
121 return ret;
122 }
123
124 if (status) {
125 IWL_ERR(mvm, "Binding command failed: %u\n", status);
126 ret = -EIO;
127 }
128
129 return ret;
130}
131
132static void iwl_mvm_iface_iterator(void *_data, u8 *mac,
133 struct ieee80211_vif *vif)
134{
135 struct iwl_mvm_iface_iterator_data *data = _data;
136 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
137
138 if (vif == data->ignore_vif)
139 return;
140
141 if (mvmvif->phy_ctxt != data->phyctxt)
142 return;
143
144 if (WARN_ON_ONCE(data->idx >= MAX_MACS_IN_BINDING))
145 return;
146
147 data->ids[data->idx] = mvmvif->id;
148 data->colors[data->idx] = mvmvif->color;
149 data->idx++;
150}
151
152static int iwl_mvm_binding_update(struct iwl_mvm *mvm,
153 struct ieee80211_vif *vif,
154 struct iwl_mvm_phy_ctxt *phyctxt,
155 bool add)
156{
157 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
158 struct iwl_mvm_iface_iterator_data data = {
159 .ignore_vif = vif,
160 .phyctxt = phyctxt,
161 };
162 u32 action = FW_CTXT_ACTION_MODIFY;
163
164 lockdep_assert_held(&mvm->mutex);
165
166 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
167 IEEE80211_IFACE_ITER_NORMAL,
168 iwl_mvm_iface_iterator,
169 &data);
170
171 /*
172 * If there are no other interfaces yet we
173 * need to create a new binding.
174 */
175 if (data.idx == 0) {
176 if (add)
177 action = FW_CTXT_ACTION_ADD;
178 else
179 action = FW_CTXT_ACTION_REMOVE;
180 }
181
182 if (add) {
183 if (WARN_ON_ONCE(data.idx >= MAX_MACS_IN_BINDING))
184 return -EINVAL;
185
186 data.ids[data.idx] = mvmvif->id;
187 data.colors[data.idx] = mvmvif->color;
188 data.idx++;
189 }
190
191 return iwl_mvm_binding_cmd(mvm, action, &data);
192}
193
194int iwl_mvm_binding_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
195{
196 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
197
198 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
199 return -EINVAL;
200
201 /*
202 * Update SF - Disable if needed. if this fails, SF might still be on
203 * while many macs are bound, which is forbidden - so fail the binding.
204 */
205 if (iwl_mvm_sf_update(mvm, vif, false))
206 return -EINVAL;
207
208 return iwl_mvm_binding_update(mvm, vif, mvmvif->phy_ctxt, true);
209}
210
211int iwl_mvm_binding_remove_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
212{
213 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
214 int ret;
215
216 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
217 return -EINVAL;
218
219 ret = iwl_mvm_binding_update(mvm, vif, mvmvif->phy_ctxt, false);
220
221 if (!ret)
222 if (iwl_mvm_sf_update(mvm, vif, true))
223 IWL_ERR(mvm, "Failed to update SF state\n");
224
225 return ret;
226}