|
| 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 - 2013 Intel Corporation. All rights reserved. |
| 9 | + * |
| 10 | + * This program is free software; you can redistribute it and/or modify |
| 11 | + * it under the terms of version 2 of the GNU General Public License as |
| 12 | + * published by the Free Software Foundation. |
| 13 | + * |
| 14 | + * This program is distributed in the hope that it will be useful, but |
| 15 | + * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 17 | + * General Public License for more details. |
| 18 | + * |
| 19 | + * You should have received a copy of the GNU General Public License |
| 20 | + * along with this program; if not, write to the Free Software |
| 21 | + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, |
| 22 | + * USA |
| 23 | + * |
| 24 | + * The full GNU General Public License is included in this distribution |
| 25 | + * in the file called LICENSE.GPL. |
| 26 | + * |
| 27 | + * Contact Information: |
| 28 | + * Intel Linux Wireless <[email protected]> |
| 29 | + * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| 30 | + * |
| 31 | + * BSD LICENSE |
| 32 | + * |
| 33 | + * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved. |
| 34 | + * All rights reserved. |
| 35 | + * |
| 36 | + * Redistribution and use in source and binary forms, with or without |
| 37 | + * modification, are permitted provided that the following conditions |
| 38 | + * are met: |
| 39 | + * |
| 40 | + * * Redistributions of source code must retain the above copyright |
| 41 | + * notice, this list of conditions and the following disclaimer. |
| 42 | + * * Redistributions in binary form must reproduce the above copyright |
| 43 | + * notice, this list of conditions and the following disclaimer in |
| 44 | + * the documentation and/or other materials provided with the |
| 45 | + * distribution. |
| 46 | + * * Neither the name Intel Corporation nor the names of its |
| 47 | + * contributors may be used to endorse or promote products derived |
| 48 | + * from this software without specific prior written permission. |
| 49 | + * |
| 50 | + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 51 | + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 52 | + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 53 | + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 54 | + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 55 | + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 56 | + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 57 | + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 58 | + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 59 | + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 60 | + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 61 | + * |
| 62 | + *****************************************************************************/ |
| 63 | + |
| 64 | +#include <net/mac80211.h> |
| 65 | +#include "fw-api.h" |
| 66 | +#include "mvm.h" |
| 67 | + |
| 68 | +struct iwl_mvm_iface_iterator_data { |
| 69 | + struct ieee80211_vif *ignore_vif; |
| 70 | + int idx; |
| 71 | + |
| 72 | + struct iwl_mvm_phy_ctxt *phyctxt; |
| 73 | + |
| 74 | + u16 ids[MAX_MACS_IN_BINDING]; |
| 75 | + u16 colors[MAX_MACS_IN_BINDING]; |
| 76 | +}; |
| 77 | + |
| 78 | +static int iwl_mvm_binding_cmd(struct iwl_mvm *mvm, u32 action, |
| 79 | + struct iwl_mvm_iface_iterator_data *data) |
| 80 | +{ |
| 81 | + struct iwl_binding_cmd cmd; |
| 82 | + struct iwl_mvm_phy_ctxt *phyctxt = data->phyctxt; |
| 83 | + int i, ret; |
| 84 | + u32 status; |
| 85 | + |
| 86 | + memset(&cmd, 0, sizeof(cmd)); |
| 87 | + |
| 88 | + cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(phyctxt->id, |
| 89 | + phyctxt->color)); |
| 90 | + cmd.action = cpu_to_le32(action); |
| 91 | + cmd.phy = cpu_to_le32(FW_CMD_ID_AND_COLOR(phyctxt->id, |
| 92 | + phyctxt->color)); |
| 93 | + |
| 94 | + for (i = 0; i < MAX_MACS_IN_BINDING; i++) |
| 95 | + cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID); |
| 96 | + for (i = 0; i < data->idx; i++) |
| 97 | + cmd.macs[i] = cpu_to_le32(FW_CMD_ID_AND_COLOR(data->ids[i], |
| 98 | + data->colors[i])); |
| 99 | + |
| 100 | + status = 0; |
| 101 | + ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD, |
| 102 | + sizeof(cmd), &cmd, &status); |
| 103 | + if (ret) { |
| 104 | + IWL_ERR(mvm, "Failed to send binding (action:%d): %d\n", |
| 105 | + action, ret); |
| 106 | + return ret; |
| 107 | + } |
| 108 | + |
| 109 | + if (status) { |
| 110 | + IWL_ERR(mvm, "Binding command failed: %u\n", status); |
| 111 | + ret = -EIO; |
| 112 | + } |
| 113 | + |
| 114 | + return ret; |
| 115 | +} |
| 116 | + |
| 117 | +static void iwl_mvm_iface_iterator(void *_data, u8 *mac, |
| 118 | + struct ieee80211_vif *vif) |
| 119 | +{ |
| 120 | + struct iwl_mvm_iface_iterator_data *data = _data; |
| 121 | + struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
| 122 | + |
| 123 | + if (vif == data->ignore_vif) |
| 124 | + return; |
| 125 | + |
| 126 | + if (mvmvif->phy_ctxt != data->phyctxt) |
| 127 | + return; |
| 128 | + |
| 129 | + if (WARN_ON_ONCE(data->idx >= MAX_MACS_IN_BINDING)) |
| 130 | + return; |
| 131 | + |
| 132 | + data->ids[data->idx] = mvmvif->id; |
| 133 | + data->colors[data->idx] = mvmvif->color; |
| 134 | + data->idx++; |
| 135 | +} |
| 136 | + |
| 137 | +static int iwl_mvm_binding_update(struct iwl_mvm *mvm, |
| 138 | + struct ieee80211_vif *vif, |
| 139 | + struct iwl_mvm_phy_ctxt *phyctxt, |
| 140 | + bool add) |
| 141 | +{ |
| 142 | + struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
| 143 | + struct iwl_mvm_iface_iterator_data data = { |
| 144 | + .ignore_vif = vif, |
| 145 | + .phyctxt = phyctxt, |
| 146 | + }; |
| 147 | + u32 action = FW_CTXT_ACTION_MODIFY; |
| 148 | + |
| 149 | + lockdep_assert_held(&mvm->mutex); |
| 150 | + |
| 151 | + ieee80211_iterate_active_interfaces_atomic(mvm->hw, |
| 152 | + IEEE80211_IFACE_ITER_NORMAL, |
| 153 | + iwl_mvm_iface_iterator, |
| 154 | + &data); |
| 155 | + |
| 156 | + /* |
| 157 | + * If there are no other interfaces yet we |
| 158 | + * need to create a new binding. |
| 159 | + */ |
| 160 | + if (data.idx == 0) { |
| 161 | + if (add) |
| 162 | + action = FW_CTXT_ACTION_ADD; |
| 163 | + else |
| 164 | + action = FW_CTXT_ACTION_REMOVE; |
| 165 | + } |
| 166 | + |
| 167 | + if (add) { |
| 168 | + if (WARN_ON_ONCE(data.idx >= MAX_MACS_IN_BINDING)) |
| 169 | + return -EINVAL; |
| 170 | + |
| 171 | + data.ids[data.idx] = mvmvif->id; |
| 172 | + data.colors[data.idx] = mvmvif->color; |
| 173 | + data.idx++; |
| 174 | + } |
| 175 | + |
| 176 | + return iwl_mvm_binding_cmd(mvm, action, &data); |
| 177 | +} |
| 178 | + |
| 179 | +int iwl_mvm_binding_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
| 180 | +{ |
| 181 | + struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
| 182 | + |
| 183 | + if (WARN_ON_ONCE(!mvmvif->phy_ctxt)) |
| 184 | + return -EINVAL; |
| 185 | + |
| 186 | + return iwl_mvm_binding_update(mvm, vif, mvmvif->phy_ctxt, true); |
| 187 | +} |
| 188 | + |
| 189 | +int iwl_mvm_binding_remove_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
| 190 | +{ |
| 191 | + struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
| 192 | + |
| 193 | + if (WARN_ON_ONCE(!mvmvif->phy_ctxt)) |
| 194 | + return -EINVAL; |
| 195 | + |
| 196 | + return iwl_mvm_binding_update(mvm, vif, mvmvif->phy_ctxt, false); |
| 197 | +} |
0 commit comments