199 lines
6.1 KiB
C
199 lines
6.1 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 - 2013 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 - 2013 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_quota_iterator_data {
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int n_interfaces[MAX_BINDINGS];
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int colors[MAX_BINDINGS];
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struct ieee80211_vif *new_vif;
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};
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static void iwl_mvm_quota_iterator(void *_data, u8 *mac,
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struct ieee80211_vif *vif)
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{
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struct iwl_mvm_quota_iterator_data *data = _data;
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struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
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u16 id;
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/*
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* We'll account for the new interface (if any) below,
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* skip it here in case we're not called from within
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* the add_interface callback (otherwise it won't show
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* up in iteration)
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*/
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if (vif == data->new_vif)
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return;
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if (!mvmvif->phy_ctxt)
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return;
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/* currently, PHY ID == binding ID */
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id = mvmvif->phy_ctxt->id;
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/* need at least one binding per PHY */
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BUILD_BUG_ON(NUM_PHY_CTX > MAX_BINDINGS);
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if (WARN_ON_ONCE(id >= MAX_BINDINGS))
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return;
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if (data->colors[id] < 0)
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data->colors[id] = mvmvif->phy_ctxt->color;
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else
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WARN_ON_ONCE(data->colors[id] != mvmvif->phy_ctxt->color);
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switch (vif->type) {
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case NL80211_IFTYPE_STATION:
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if (vif->bss_conf.assoc)
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data->n_interfaces[id]++;
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break;
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case NL80211_IFTYPE_AP:
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if (mvmvif->ap_active)
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data->n_interfaces[id]++;
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break;
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case NL80211_IFTYPE_MONITOR:
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if (mvmvif->monitor_active)
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data->n_interfaces[id]++;
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break;
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case NL80211_IFTYPE_P2P_DEVICE:
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break;
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case NL80211_IFTYPE_ADHOC:
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if (vif->bss_conf.ibss_joined)
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data->n_interfaces[id]++;
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break;
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default:
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WARN_ON_ONCE(1);
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break;
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}
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}
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int iwl_mvm_update_quotas(struct iwl_mvm *mvm, struct ieee80211_vif *newvif)
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{
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struct iwl_time_quota_cmd cmd;
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int i, idx, ret, num_active_bindings, quota, quota_rem;
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struct iwl_mvm_quota_iterator_data data = {
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.n_interfaces = {},
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.colors = { -1, -1, -1, -1 },
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.new_vif = newvif,
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};
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/* update all upon completion */
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if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
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return 0;
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BUILD_BUG_ON(data.colors[MAX_BINDINGS - 1] != -1);
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lockdep_assert_held(&mvm->mutex);
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memset(&cmd, 0, sizeof(cmd));
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ieee80211_iterate_active_interfaces_atomic(
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mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
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iwl_mvm_quota_iterator, &data);
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if (newvif) {
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data.new_vif = NULL;
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iwl_mvm_quota_iterator(&data, newvif->addr, newvif);
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}
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/*
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* The FW's scheduling session consists of
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* IWL_MVM_MAX_QUOTA fragments. Divide these fragments
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* equally between all the bindings that require quota
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*/
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num_active_bindings = 0;
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for (i = 0; i < MAX_BINDINGS; i++) {
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cmd.quotas[i].id_and_color = cpu_to_le32(FW_CTXT_INVALID);
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if (data.n_interfaces[i] > 0)
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num_active_bindings++;
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}
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if (!num_active_bindings)
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goto send_cmd;
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quota = IWL_MVM_MAX_QUOTA / num_active_bindings;
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quota_rem = IWL_MVM_MAX_QUOTA % num_active_bindings;
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for (idx = 0, i = 0; i < MAX_BINDINGS; i++) {
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if (data.n_interfaces[i] <= 0)
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continue;
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cmd.quotas[idx].id_and_color =
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cpu_to_le32(FW_CMD_ID_AND_COLOR(i, data.colors[i]));
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cmd.quotas[idx].quota = cpu_to_le32(quota);
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cmd.quotas[idx].max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA);
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idx++;
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}
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/* Give the remainder of the session to the first binding */
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le32_add_cpu(&cmd.quotas[0].quota, quota_rem);
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send_cmd:
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ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, CMD_SYNC,
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sizeof(cmd), &cmd);
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if (ret)
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IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
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return ret;
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}
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