diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/mvm/quota.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/quota.c | 328 |
1 files changed, 0 insertions, 328 deletions
diff --git a/drivers/net/wireless/iwlwifi/mvm/quota.c b/drivers/net/wireless/iwlwifi/mvm/quota.c deleted file mode 100644 index 509a66d05245..000000000000 --- a/drivers/net/wireless/iwlwifi/mvm/quota.c +++ /dev/null @@ -1,328 +0,0 @@ -/****************************************************************************** - * - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. - * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, - * USA - * - * The full GNU General Public License is included in this distribution - * in the file called COPYING. - * - * Contact Information: - * Intel Linux Wireless <ilw@linux.intel.com> - * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - * - * BSD LICENSE - * - * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. - * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - *****************************************************************************/ - -#include <net/mac80211.h> -#include "fw-api.h" -#include "mvm.h" - -#define QUOTA_100 IWL_MVM_MAX_QUOTA -#define QUOTA_LOWLAT_MIN ((QUOTA_100 * IWL_MVM_LOWLAT_QUOTA_MIN_PERCENT) / 100) - -struct iwl_mvm_quota_iterator_data { - int n_interfaces[MAX_BINDINGS]; - int colors[MAX_BINDINGS]; - int low_latency[MAX_BINDINGS]; - int n_low_latency_bindings; - struct ieee80211_vif *disabled_vif; -}; - -static void iwl_mvm_quota_iterator(void *_data, u8 *mac, - struct ieee80211_vif *vif) -{ - struct iwl_mvm_quota_iterator_data *data = _data; - struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); - u16 id; - - /* skip disabled interfaces here immediately */ - if (vif == data->disabled_vif) - return; - - if (!mvmvif->phy_ctxt) - return; - - /* currently, PHY ID == binding ID */ - id = mvmvif->phy_ctxt->id; - - /* need at least one binding per PHY */ - BUILD_BUG_ON(NUM_PHY_CTX > MAX_BINDINGS); - - if (WARN_ON_ONCE(id >= MAX_BINDINGS)) - return; - - switch (vif->type) { - case NL80211_IFTYPE_STATION: - if (vif->bss_conf.assoc) - break; - return; - case NL80211_IFTYPE_AP: - case NL80211_IFTYPE_ADHOC: - if (mvmvif->ap_ibss_active) - break; - return; - case NL80211_IFTYPE_MONITOR: - if (mvmvif->monitor_active) - break; - return; - case NL80211_IFTYPE_P2P_DEVICE: - return; - default: - WARN_ON_ONCE(1); - return; - } - - if (data->colors[id] < 0) - data->colors[id] = mvmvif->phy_ctxt->color; - else - WARN_ON_ONCE(data->colors[id] != mvmvif->phy_ctxt->color); - - data->n_interfaces[id]++; - - if (iwl_mvm_vif_low_latency(mvmvif) && !data->low_latency[id]) { - data->n_low_latency_bindings++; - data->low_latency[id] = true; - } -} - -static void iwl_mvm_adjust_quota_for_noa(struct iwl_mvm *mvm, - struct iwl_time_quota_cmd *cmd) -{ -#ifdef CONFIG_NL80211_TESTMODE - struct iwl_mvm_vif *mvmvif; - int i, phy_id = -1, beacon_int = 0; - - if (!mvm->noa_duration || !mvm->noa_vif) - return; - - mvmvif = iwl_mvm_vif_from_mac80211(mvm->noa_vif); - if (!mvmvif->ap_ibss_active) - return; - - phy_id = mvmvif->phy_ctxt->id; - beacon_int = mvm->noa_vif->bss_conf.beacon_int; - - for (i = 0; i < MAX_BINDINGS; i++) { - u32 id_n_c = le32_to_cpu(cmd->quotas[i].id_and_color); - u32 id = (id_n_c & FW_CTXT_ID_MSK) >> FW_CTXT_ID_POS; - u32 quota = le32_to_cpu(cmd->quotas[i].quota); - - if (id != phy_id) - continue; - - quota *= (beacon_int - mvm->noa_duration); - quota /= beacon_int; - - IWL_DEBUG_QUOTA(mvm, "quota: adjust for NoA from %d to %d\n", - le32_to_cpu(cmd->quotas[i].quota), quota); - - cmd->quotas[i].quota = cpu_to_le32(quota); - } -#endif -} - -int iwl_mvm_update_quotas(struct iwl_mvm *mvm, - bool force_update, - struct ieee80211_vif *disabled_vif) -{ - struct iwl_time_quota_cmd cmd = {}; - int i, idx, err, num_active_macs, quota, quota_rem, n_non_lowlat; - struct iwl_mvm_quota_iterator_data data = { - .n_interfaces = {}, - .colors = { -1, -1, -1, -1 }, - .disabled_vif = disabled_vif, - }; - struct iwl_time_quota_cmd *last = &mvm->last_quota_cmd; - bool send = false; - - lockdep_assert_held(&mvm->mutex); - - /* update all upon completion */ - if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) - return 0; - - /* iterator data above must match */ - BUILD_BUG_ON(MAX_BINDINGS != 4); - - ieee80211_iterate_active_interfaces_atomic( - mvm->hw, IEEE80211_IFACE_ITER_NORMAL, - iwl_mvm_quota_iterator, &data); - - /* - * The FW's scheduling session consists of - * IWL_MVM_MAX_QUOTA fragments. Divide these fragments - * equally between all the bindings that require quota - */ - num_active_macs = 0; - for (i = 0; i < MAX_BINDINGS; i++) { - cmd.quotas[i].id_and_color = cpu_to_le32(FW_CTXT_INVALID); - num_active_macs += data.n_interfaces[i]; - } - - n_non_lowlat = num_active_macs; - - if (data.n_low_latency_bindings == 1) { - for (i = 0; i < MAX_BINDINGS; i++) { - if (data.low_latency[i]) { - n_non_lowlat -= data.n_interfaces[i]; - break; - } - } - } - - if (data.n_low_latency_bindings == 1 && n_non_lowlat) { - /* - * Reserve quota for the low latency binding in case that - * there are several data bindings but only a single - * low latency one. Split the rest of the quota equally - * between the other data interfaces. - */ - quota = (QUOTA_100 - QUOTA_LOWLAT_MIN) / n_non_lowlat; - quota_rem = QUOTA_100 - n_non_lowlat * quota - - QUOTA_LOWLAT_MIN; - IWL_DEBUG_QUOTA(mvm, - "quota: low-latency binding active, remaining quota per other binding: %d\n", - quota); - } else if (num_active_macs) { - /* - * There are 0 or more than 1 low latency bindings, or all the - * data interfaces belong to the single low latency binding. - * Split the quota equally between the data interfaces. - */ - quota = QUOTA_100 / num_active_macs; - quota_rem = QUOTA_100 % num_active_macs; - IWL_DEBUG_QUOTA(mvm, - "quota: splitting evenly per binding: %d\n", - quota); - } else { - /* values don't really matter - won't be used */ - quota = 0; - quota_rem = 0; - } - - for (idx = 0, i = 0; i < MAX_BINDINGS; i++) { - if (data.colors[i] < 0) - continue; - - cmd.quotas[idx].id_and_color = - cpu_to_le32(FW_CMD_ID_AND_COLOR(i, data.colors[i])); - - if (data.n_interfaces[i] <= 0) - cmd.quotas[idx].quota = cpu_to_le32(0); - else if (data.n_low_latency_bindings == 1 && n_non_lowlat && - data.low_latency[i]) - /* - * There is more than one binding, but only one of the - * bindings is in low latency. For this case, allocate - * the minimal required quota for the low latency - * binding. - */ - cmd.quotas[idx].quota = cpu_to_le32(QUOTA_LOWLAT_MIN); - else - cmd.quotas[idx].quota = - cpu_to_le32(quota * data.n_interfaces[i]); - - WARN_ONCE(le32_to_cpu(cmd.quotas[idx].quota) > QUOTA_100, - "Binding=%d, quota=%u > max=%u\n", - idx, le32_to_cpu(cmd.quotas[idx].quota), QUOTA_100); - - cmd.quotas[idx].max_duration = cpu_to_le32(0); - - idx++; - } - - /* Give the remainder of the session to the first data binding */ - for (i = 0; i < MAX_BINDINGS; i++) { - if (le32_to_cpu(cmd.quotas[i].quota) != 0) { - le32_add_cpu(&cmd.quotas[i].quota, quota_rem); - IWL_DEBUG_QUOTA(mvm, - "quota: giving remainder of %d to binding %d\n", - quota_rem, i); - break; - } - } - - iwl_mvm_adjust_quota_for_noa(mvm, &cmd); - - /* check that we have non-zero quota for all valid bindings */ - for (i = 0; i < MAX_BINDINGS; i++) { - if (cmd.quotas[i].id_and_color != last->quotas[i].id_and_color) - send = true; - if (cmd.quotas[i].max_duration != last->quotas[i].max_duration) - send = true; - if (abs((int)le32_to_cpu(cmd.quotas[i].quota) - - (int)le32_to_cpu(last->quotas[i].quota)) - > IWL_MVM_QUOTA_THRESHOLD) - send = true; - if (cmd.quotas[i].id_and_color == cpu_to_le32(FW_CTXT_INVALID)) - continue; - WARN_ONCE(cmd.quotas[i].quota == 0, - "zero quota on binding %d\n", i); - } - - if (!send && !force_update) { - /* don't send a practically unchanged command, the firmware has - * to re-initialize a lot of state and that can have an adverse - * impact on it - */ - return 0; - } - - err = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0, sizeof(cmd), &cmd); - - if (err) - IWL_ERR(mvm, "Failed to send quota: %d\n", err); - else - mvm->last_quota_cmd = cmd; - return err; -} |