212 lines
6.3 KiB
C
212 lines
6.3 KiB
C
/******************************************************************************
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*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
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* USA
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*
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* The full GNU General Public License is included in this distribution
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* in the file called COPYING.
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*
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* Contact Information:
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* Intel Linux Wireless <ilw@linux.intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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* BSD LICENSE
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*
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* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*****************************************************************************/
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#include <net/mac80211.h>
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#include "fw-api.h"
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#include "mvm.h"
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struct iwl_mvm_iface_iterator_data {
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struct ieee80211_vif *ignore_vif;
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int idx;
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struct iwl_mvm_phy_ctxt *phyctxt;
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u16 ids[MAX_MACS_IN_BINDING];
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u16 colors[MAX_MACS_IN_BINDING];
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};
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static int iwl_mvm_binding_cmd(struct iwl_mvm *mvm, u32 action,
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struct iwl_mvm_iface_iterator_data *data)
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{
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struct iwl_binding_cmd cmd;
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struct iwl_mvm_phy_ctxt *phyctxt = data->phyctxt;
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int i, ret;
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u32 status;
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memset(&cmd, 0, sizeof(cmd));
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cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(phyctxt->id,
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phyctxt->color));
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cmd.action = cpu_to_le32(action);
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cmd.phy = cpu_to_le32(FW_CMD_ID_AND_COLOR(phyctxt->id,
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phyctxt->color));
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for (i = 0; i < MAX_MACS_IN_BINDING; i++)
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cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
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for (i = 0; i < data->idx; i++)
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cmd.macs[i] = cpu_to_le32(FW_CMD_ID_AND_COLOR(data->ids[i],
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data->colors[i]));
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status = 0;
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ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
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sizeof(cmd), &cmd, &status);
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if (ret) {
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IWL_ERR(mvm, "Failed to send binding (action:%d): %d\n",
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action, ret);
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return ret;
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}
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if (status) {
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IWL_ERR(mvm, "Binding command failed: %u\n", status);
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ret = -EIO;
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}
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return ret;
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}
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static void iwl_mvm_iface_iterator(void *_data, u8 *mac,
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struct ieee80211_vif *vif)
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{
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struct iwl_mvm_iface_iterator_data *data = _data;
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struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
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if (vif == data->ignore_vif)
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return;
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if (mvmvif->phy_ctxt != data->phyctxt)
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return;
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if (WARN_ON_ONCE(data->idx >= MAX_MACS_IN_BINDING))
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return;
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data->ids[data->idx] = mvmvif->id;
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data->colors[data->idx] = mvmvif->color;
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data->idx++;
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}
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static int iwl_mvm_binding_update(struct iwl_mvm *mvm,
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struct ieee80211_vif *vif,
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struct iwl_mvm_phy_ctxt *phyctxt,
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bool add)
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{
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struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
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struct iwl_mvm_iface_iterator_data data = {
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.ignore_vif = vif,
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.phyctxt = phyctxt,
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};
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u32 action = FW_CTXT_ACTION_MODIFY;
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lockdep_assert_held(&mvm->mutex);
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ieee80211_iterate_active_interfaces_atomic(mvm->hw,
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IEEE80211_IFACE_ITER_NORMAL,
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iwl_mvm_iface_iterator,
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&data);
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/*
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* If there are no other interfaces yet we
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* need to create a new binding.
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*/
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if (data.idx == 0) {
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if (add)
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action = FW_CTXT_ACTION_ADD;
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else
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action = FW_CTXT_ACTION_REMOVE;
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}
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if (add) {
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if (WARN_ON_ONCE(data.idx >= MAX_MACS_IN_BINDING))
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return -EINVAL;
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data.ids[data.idx] = mvmvif->id;
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data.colors[data.idx] = mvmvif->color;
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data.idx++;
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}
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return iwl_mvm_binding_cmd(mvm, action, &data);
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}
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int iwl_mvm_binding_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
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{
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struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
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if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
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return -EINVAL;
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/*
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* Update SF - Disable if needed. if this fails, SF might still be on
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* while many macs are bound, which is forbidden - so fail the binding.
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*/
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if (iwl_mvm_sf_update(mvm, vif, false))
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return -EINVAL;
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return iwl_mvm_binding_update(mvm, vif, mvmvif->phy_ctxt, true);
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}
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int iwl_mvm_binding_remove_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
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{
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struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
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int ret;
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if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
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return -EINVAL;
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ret = iwl_mvm_binding_update(mvm, vif, mvmvif->phy_ctxt, false);
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if (!ret)
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if (iwl_mvm_sf_update(mvm, vif, true))
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IWL_ERR(mvm, "Failed to update SF state\n");
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return ret;
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}
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