forked from Minki/linux
e36e5433c9
This patch adds a cipher scheme support to extend a set of the supported ciphers. The driver reads a cipher scheme list TLV from FW image and passes it to mac80211 on hw registration. After the cipher schemes are registered the driver handles key installation and Tx/Rx calls related to the new ciphers. Signed-off-by: Max Stepanov <Max.Stepanov@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
1461 lines
40 KiB
C
1461 lines
40 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 "mvm.h"
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#include "sta.h"
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#include "rs.h"
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static void iwl_mvm_add_sta_cmd_v6_to_v5(struct iwl_mvm_add_sta_cmd_v6 *cmd_v6,
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struct iwl_mvm_add_sta_cmd_v5 *cmd_v5)
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{
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memset(cmd_v5, 0, sizeof(*cmd_v5));
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cmd_v5->add_modify = cmd_v6->add_modify;
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cmd_v5->tid_disable_tx = cmd_v6->tid_disable_tx;
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cmd_v5->mac_id_n_color = cmd_v6->mac_id_n_color;
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memcpy(cmd_v5->addr, cmd_v6->addr, ETH_ALEN);
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cmd_v5->sta_id = cmd_v6->sta_id;
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cmd_v5->modify_mask = cmd_v6->modify_mask;
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cmd_v5->station_flags = cmd_v6->station_flags;
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cmd_v5->station_flags_msk = cmd_v6->station_flags_msk;
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cmd_v5->add_immediate_ba_tid = cmd_v6->add_immediate_ba_tid;
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cmd_v5->remove_immediate_ba_tid = cmd_v6->remove_immediate_ba_tid;
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cmd_v5->add_immediate_ba_ssn = cmd_v6->add_immediate_ba_ssn;
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cmd_v5->sleep_tx_count = cmd_v6->sleep_tx_count;
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cmd_v5->sleep_state_flags = cmd_v6->sleep_state_flags;
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cmd_v5->assoc_id = cmd_v6->assoc_id;
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cmd_v5->beamform_flags = cmd_v6->beamform_flags;
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cmd_v5->tfd_queue_msk = cmd_v6->tfd_queue_msk;
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}
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static void
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iwl_mvm_add_sta_key_to_add_sta_cmd_v5(struct iwl_mvm_add_sta_key_cmd *key_cmd,
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struct iwl_mvm_add_sta_cmd_v5 *sta_cmd,
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u32 mac_id_n_color)
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{
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memset(sta_cmd, 0, sizeof(*sta_cmd));
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sta_cmd->sta_id = key_cmd->sta_id;
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sta_cmd->add_modify = STA_MODE_MODIFY;
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sta_cmd->modify_mask = STA_MODIFY_KEY;
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sta_cmd->mac_id_n_color = cpu_to_le32(mac_id_n_color);
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sta_cmd->key.key_offset = key_cmd->key_offset;
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sta_cmd->key.key_flags = key_cmd->key_flags;
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memcpy(sta_cmd->key.key, key_cmd->key, sizeof(sta_cmd->key.key));
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sta_cmd->key.tkip_rx_tsc_byte2 = key_cmd->tkip_rx_tsc_byte2;
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memcpy(sta_cmd->key.tkip_rx_ttak, key_cmd->tkip_rx_ttak,
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sizeof(sta_cmd->key.tkip_rx_ttak));
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}
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static int iwl_mvm_send_add_sta_cmd_status(struct iwl_mvm *mvm,
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struct iwl_mvm_add_sta_cmd_v6 *cmd,
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int *status)
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{
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struct iwl_mvm_add_sta_cmd_v5 cmd_v5;
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if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_STA_KEY_CMD)
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return iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(*cmd),
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cmd, status);
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iwl_mvm_add_sta_cmd_v6_to_v5(cmd, &cmd_v5);
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return iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd_v5),
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&cmd_v5, status);
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}
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static int iwl_mvm_send_add_sta_cmd(struct iwl_mvm *mvm, u32 flags,
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struct iwl_mvm_add_sta_cmd_v6 *cmd)
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{
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struct iwl_mvm_add_sta_cmd_v5 cmd_v5;
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if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_STA_KEY_CMD)
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return iwl_mvm_send_cmd_pdu(mvm, ADD_STA, flags,
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sizeof(*cmd), cmd);
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iwl_mvm_add_sta_cmd_v6_to_v5(cmd, &cmd_v5);
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return iwl_mvm_send_cmd_pdu(mvm, ADD_STA, flags, sizeof(cmd_v5),
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&cmd_v5);
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}
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static int
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iwl_mvm_send_add_sta_key_cmd_status(struct iwl_mvm *mvm,
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struct iwl_mvm_add_sta_key_cmd *cmd,
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u32 mac_id_n_color,
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int *status)
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{
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struct iwl_mvm_add_sta_cmd_v5 sta_cmd;
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if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_STA_KEY_CMD)
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return iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY,
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sizeof(*cmd), cmd, status);
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iwl_mvm_add_sta_key_to_add_sta_cmd_v5(cmd, &sta_cmd, mac_id_n_color);
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return iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(sta_cmd),
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&sta_cmd, status);
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}
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static int iwl_mvm_send_add_sta_key_cmd(struct iwl_mvm *mvm,
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u32 flags,
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struct iwl_mvm_add_sta_key_cmd *cmd,
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u32 mac_id_n_color)
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{
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struct iwl_mvm_add_sta_cmd_v5 sta_cmd;
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if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_STA_KEY_CMD)
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return iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, flags,
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sizeof(*cmd), cmd);
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iwl_mvm_add_sta_key_to_add_sta_cmd_v5(cmd, &sta_cmd, mac_id_n_color);
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return iwl_mvm_send_cmd_pdu(mvm, ADD_STA, flags, sizeof(sta_cmd),
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&sta_cmd);
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}
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static int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm)
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{
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int sta_id;
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WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status));
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lockdep_assert_held(&mvm->mutex);
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/* Don't take rcu_read_lock() since we are protected by mvm->mutex */
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for (sta_id = 0; sta_id < IWL_MVM_STATION_COUNT; sta_id++)
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if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
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lockdep_is_held(&mvm->mutex)))
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return sta_id;
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return IWL_MVM_STATION_COUNT;
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}
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/* send station add/update command to firmware */
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int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
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bool update)
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{
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struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
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struct iwl_mvm_add_sta_cmd_v6 add_sta_cmd;
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int ret;
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u32 status;
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u32 agg_size = 0, mpdu_dens = 0;
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memset(&add_sta_cmd, 0, sizeof(add_sta_cmd));
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add_sta_cmd.sta_id = mvm_sta->sta_id;
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add_sta_cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
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if (!update) {
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add_sta_cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk);
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memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN);
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}
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add_sta_cmd.add_modify = update ? 1 : 0;
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add_sta_cmd.station_flags_msk |= cpu_to_le32(STA_FLG_FAT_EN_MSK |
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STA_FLG_MIMO_EN_MSK);
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switch (sta->bandwidth) {
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case IEEE80211_STA_RX_BW_160:
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add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ);
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/* fall through */
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case IEEE80211_STA_RX_BW_80:
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add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ);
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/* fall through */
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case IEEE80211_STA_RX_BW_40:
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add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ);
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/* fall through */
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case IEEE80211_STA_RX_BW_20:
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if (sta->ht_cap.ht_supported)
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add_sta_cmd.station_flags |=
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cpu_to_le32(STA_FLG_FAT_EN_20MHZ);
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break;
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}
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switch (sta->rx_nss) {
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case 1:
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add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO);
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break;
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case 2:
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add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2);
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break;
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case 3 ... 8:
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add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3);
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break;
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}
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switch (sta->smps_mode) {
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case IEEE80211_SMPS_AUTOMATIC:
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case IEEE80211_SMPS_NUM_MODES:
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WARN_ON(1);
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break;
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case IEEE80211_SMPS_STATIC:
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/* override NSS */
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add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK);
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add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO);
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break;
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case IEEE80211_SMPS_DYNAMIC:
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add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT);
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break;
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case IEEE80211_SMPS_OFF:
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/* nothing */
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break;
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}
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if (sta->ht_cap.ht_supported) {
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add_sta_cmd.station_flags_msk |=
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cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK |
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STA_FLG_AGG_MPDU_DENS_MSK);
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mpdu_dens = sta->ht_cap.ampdu_density;
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}
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if (sta->vht_cap.vht_supported) {
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agg_size = sta->vht_cap.cap &
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IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
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agg_size >>=
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IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT;
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} else if (sta->ht_cap.ht_supported) {
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agg_size = sta->ht_cap.ampdu_factor;
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}
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add_sta_cmd.station_flags |=
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cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT);
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add_sta_cmd.station_flags |=
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cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT);
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status = ADD_STA_SUCCESS;
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ret = iwl_mvm_send_add_sta_cmd_status(mvm, &add_sta_cmd, &status);
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if (ret)
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return ret;
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switch (status) {
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case ADD_STA_SUCCESS:
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IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n");
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break;
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default:
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ret = -EIO;
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IWL_ERR(mvm, "ADD_STA failed\n");
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break;
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}
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return ret;
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}
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int iwl_mvm_add_sta(struct iwl_mvm *mvm,
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struct ieee80211_vif *vif,
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struct ieee80211_sta *sta)
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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_sta *mvm_sta = (void *)sta->drv_priv;
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int i, ret, sta_id;
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lockdep_assert_held(&mvm->mutex);
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if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
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sta_id = iwl_mvm_find_free_sta_id(mvm);
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else
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sta_id = mvm_sta->sta_id;
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if (WARN_ON_ONCE(sta_id == IWL_MVM_STATION_COUNT))
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return -ENOSPC;
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spin_lock_init(&mvm_sta->lock);
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mvm_sta->sta_id = sta_id;
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mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id,
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mvmvif->color);
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mvm_sta->vif = vif;
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mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
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mvm_sta->tx_protection = 0;
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mvm_sta->tt_tx_protection = false;
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/* HW restart, don't assume the memory has been zeroed */
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atomic_set(&mvm->pending_frames[sta_id], 0);
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mvm_sta->tid_disable_agg = 0;
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mvm_sta->tfd_queue_msk = 0;
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for (i = 0; i < IEEE80211_NUM_ACS; i++)
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if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE)
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mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]);
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/* for HW restart - reset everything but the sequence number */
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for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
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u16 seq = mvm_sta->tid_data[i].seq_number;
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memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i]));
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mvm_sta->tid_data[i].seq_number = seq;
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}
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ret = iwl_mvm_sta_send_to_fw(mvm, sta, false);
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if (ret)
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return ret;
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/* The first station added is the AP, the others are TDLS STAs */
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if (vif->type == NL80211_IFTYPE_STATION &&
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mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT)
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mvmvif->ap_sta_id = sta_id;
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rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta);
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return 0;
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}
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int iwl_mvm_update_sta(struct iwl_mvm *mvm,
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struct ieee80211_vif *vif,
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struct ieee80211_sta *sta)
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{
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return iwl_mvm_sta_send_to_fw(mvm, sta, true);
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}
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int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,
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bool drain)
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{
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struct iwl_mvm_add_sta_cmd_v6 cmd = {};
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int ret;
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u32 status;
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lockdep_assert_held(&mvm->mutex);
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cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);
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cmd.sta_id = mvmsta->sta_id;
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cmd.add_modify = STA_MODE_MODIFY;
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cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0;
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cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW);
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status = ADD_STA_SUCCESS;
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ret = iwl_mvm_send_add_sta_cmd_status(mvm, &cmd, &status);
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if (ret)
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return ret;
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switch (status) {
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case ADD_STA_SUCCESS:
|
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IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n",
|
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mvmsta->sta_id);
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break;
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default:
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ret = -EIO;
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IWL_ERR(mvm, "Couldn't drain frames for staid %d\n",
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mvmsta->sta_id);
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break;
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}
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return ret;
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}
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|
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/*
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* Remove a station from the FW table. Before sending the command to remove
|
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* the station validate that the station is indeed known to the driver (sanity
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* only).
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*/
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static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id)
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{
|
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struct ieee80211_sta *sta;
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struct iwl_mvm_rm_sta_cmd rm_sta_cmd = {
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.sta_id = sta_id,
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};
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int ret;
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|
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sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
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lockdep_is_held(&mvm->mutex));
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|
|
/* Note: internal stations are marked as error values */
|
|
if (!sta) {
|
|
IWL_ERR(mvm, "Invalid station id\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, CMD_SYNC,
|
|
sizeof(rm_sta_cmd), &rm_sta_cmd);
|
|
if (ret) {
|
|
IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void iwl_mvm_sta_drained_wk(struct work_struct *wk)
|
|
{
|
|
struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk);
|
|
u8 sta_id;
|
|
|
|
/*
|
|
* The mutex is needed because of the SYNC cmd, but not only: if the
|
|
* work would run concurrently with iwl_mvm_rm_sta, it would run before
|
|
* iwl_mvm_rm_sta sets the station as busy, and exit. Then
|
|
* iwl_mvm_rm_sta would set the station as busy, and nobody will clean
|
|
* that later.
|
|
*/
|
|
mutex_lock(&mvm->mutex);
|
|
|
|
for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) {
|
|
int ret;
|
|
struct ieee80211_sta *sta =
|
|
rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
|
|
lockdep_is_held(&mvm->mutex));
|
|
|
|
/* This station is in use */
|
|
if (!IS_ERR(sta))
|
|
continue;
|
|
|
|
if (PTR_ERR(sta) == -EINVAL) {
|
|
IWL_ERR(mvm, "Drained sta %d, but it is internal?\n",
|
|
sta_id);
|
|
continue;
|
|
}
|
|
|
|
if (!sta) {
|
|
IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n",
|
|
sta_id);
|
|
continue;
|
|
}
|
|
|
|
WARN_ON(PTR_ERR(sta) != -EBUSY);
|
|
/* This station was removed and we waited until it got drained,
|
|
* we can now proceed and remove it.
|
|
*/
|
|
ret = iwl_mvm_rm_sta_common(mvm, sta_id);
|
|
if (ret) {
|
|
IWL_ERR(mvm,
|
|
"Couldn't remove sta %d after it was drained\n",
|
|
sta_id);
|
|
continue;
|
|
}
|
|
rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], NULL);
|
|
clear_bit(sta_id, mvm->sta_drained);
|
|
}
|
|
|
|
mutex_unlock(&mvm->mutex);
|
|
}
|
|
|
|
int iwl_mvm_rm_sta(struct iwl_mvm *mvm,
|
|
struct ieee80211_vif *vif,
|
|
struct ieee80211_sta *sta)
|
|
{
|
|
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
|
|
struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
|
|
int ret;
|
|
|
|
lockdep_assert_held(&mvm->mutex);
|
|
|
|
if (vif->type == NL80211_IFTYPE_STATION &&
|
|
mvmvif->ap_sta_id == mvm_sta->sta_id) {
|
|
/* flush its queues here since we are freeing mvm_sta */
|
|
ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, true);
|
|
|
|
/*
|
|
* Put a non-NULL since the fw station isn't removed.
|
|
* It will be removed after the MAC will be set as
|
|
* unassoc.
|
|
*/
|
|
rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
|
|
ERR_PTR(-EINVAL));
|
|
|
|
/* if we are associated - we can't remove the AP STA now */
|
|
if (vif->bss_conf.assoc)
|
|
return ret;
|
|
|
|
/* unassoc - go ahead - remove the AP STA now */
|
|
mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
|
|
}
|
|
|
|
/*
|
|
* Make sure that the tx response code sees the station as -EBUSY and
|
|
* calls the drain worker.
|
|
*/
|
|
spin_lock_bh(&mvm_sta->lock);
|
|
/*
|
|
* There are frames pending on the AC queues for this station.
|
|
* We need to wait until all the frames are drained...
|
|
*/
|
|
if (atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) {
|
|
rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
|
|
ERR_PTR(-EBUSY));
|
|
spin_unlock_bh(&mvm_sta->lock);
|
|
ret = iwl_mvm_drain_sta(mvm, mvm_sta, true);
|
|
} else {
|
|
spin_unlock_bh(&mvm_sta->lock);
|
|
ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id);
|
|
rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm,
|
|
struct ieee80211_vif *vif,
|
|
u8 sta_id)
|
|
{
|
|
int ret = iwl_mvm_rm_sta_common(mvm, sta_id);
|
|
|
|
lockdep_assert_held(&mvm->mutex);
|
|
|
|
rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], NULL);
|
|
return ret;
|
|
}
|
|
|
|
int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta,
|
|
u32 qmask)
|
|
{
|
|
if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
|
|
sta->sta_id = iwl_mvm_find_free_sta_id(mvm);
|
|
if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_STATION_COUNT))
|
|
return -ENOSPC;
|
|
}
|
|
|
|
sta->tfd_queue_msk = qmask;
|
|
|
|
/* put a non-NULL value so iterating over the stations won't stop */
|
|
rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL));
|
|
return 0;
|
|
}
|
|
|
|
void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta)
|
|
{
|
|
rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], NULL);
|
|
memset(sta, 0, sizeof(struct iwl_mvm_int_sta));
|
|
sta->sta_id = IWL_MVM_STATION_COUNT;
|
|
}
|
|
|
|
static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm,
|
|
struct iwl_mvm_int_sta *sta,
|
|
const u8 *addr,
|
|
u16 mac_id, u16 color)
|
|
{
|
|
struct iwl_mvm_add_sta_cmd_v6 cmd;
|
|
int ret;
|
|
u32 status;
|
|
|
|
lockdep_assert_held(&mvm->mutex);
|
|
|
|
memset(&cmd, 0, sizeof(struct iwl_mvm_add_sta_cmd_v6));
|
|
cmd.sta_id = sta->sta_id;
|
|
cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id,
|
|
color));
|
|
|
|
cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk);
|
|
|
|
if (addr)
|
|
memcpy(cmd.addr, addr, ETH_ALEN);
|
|
|
|
ret = iwl_mvm_send_add_sta_cmd_status(mvm, &cmd, &status);
|
|
if (ret)
|
|
return ret;
|
|
|
|
switch (status) {
|
|
case ADD_STA_SUCCESS:
|
|
IWL_DEBUG_INFO(mvm, "Internal station added.\n");
|
|
return 0;
|
|
default:
|
|
ret = -EIO;
|
|
IWL_ERR(mvm, "Add internal station failed, status=0x%x\n",
|
|
status);
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm)
|
|
{
|
|
int ret;
|
|
|
|
lockdep_assert_held(&mvm->mutex);
|
|
|
|
/* Add the aux station, but without any queues */
|
|
ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, 0);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL,
|
|
MAC_INDEX_AUX, 0);
|
|
|
|
if (ret)
|
|
iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Send the add station command for the vif's broadcast station.
|
|
* Assumes that the station was already allocated.
|
|
*
|
|
* @mvm: the mvm component
|
|
* @vif: the interface to which the broadcast station is added
|
|
* @bsta: the broadcast station to add.
|
|
*/
|
|
int iwl_mvm_send_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
|
|
struct iwl_mvm_int_sta *bsta)
|
|
{
|
|
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
|
|
static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
|
|
static const u8 *baddr = _baddr;
|
|
|
|
lockdep_assert_held(&mvm->mutex);
|
|
|
|
if (vif->type == NL80211_IFTYPE_ADHOC)
|
|
baddr = vif->bss_conf.bssid;
|
|
|
|
if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_STATION_COUNT))
|
|
return -ENOSPC;
|
|
|
|
return iwl_mvm_add_int_sta_common(mvm, bsta, baddr,
|
|
mvmvif->id, mvmvif->color);
|
|
}
|
|
|
|
/* Send the FW a request to remove the station from it's internal data
|
|
* structures, but DO NOT remove the entry from the local data structures. */
|
|
int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm,
|
|
struct iwl_mvm_int_sta *bsta)
|
|
{
|
|
int ret;
|
|
|
|
lockdep_assert_held(&mvm->mutex);
|
|
|
|
ret = iwl_mvm_rm_sta_common(mvm, bsta->sta_id);
|
|
if (ret)
|
|
IWL_WARN(mvm, "Failed sending remove station\n");
|
|
return ret;
|
|
}
|
|
|
|
/* Allocate a new station entry for the broadcast station to the given vif,
|
|
* and send it to the FW.
|
|
* Note that each P2P mac should have its own broadcast station.
|
|
*
|
|
* @mvm: the mvm component
|
|
* @vif: the interface to which the broadcast station is added
|
|
* @bsta: the broadcast station to add. */
|
|
int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
|
|
struct iwl_mvm_int_sta *bsta)
|
|
{
|
|
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
|
|
static const u8 baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
|
|
u32 qmask;
|
|
int ret;
|
|
|
|
lockdep_assert_held(&mvm->mutex);
|
|
|
|
qmask = iwl_mvm_mac_get_queues_mask(mvm, vif);
|
|
ret = iwl_mvm_allocate_int_sta(mvm, bsta, qmask);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr,
|
|
mvmvif->id, mvmvif->color);
|
|
|
|
if (ret)
|
|
iwl_mvm_dealloc_int_sta(mvm, bsta);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Send the FW a request to remove the station from it's internal data
|
|
* structures, and in addition remove it from the local data structure.
|
|
*/
|
|
int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *bsta)
|
|
{
|
|
int ret;
|
|
|
|
lockdep_assert_held(&mvm->mutex);
|
|
|
|
ret = iwl_mvm_rm_sta_common(mvm, bsta->sta_id);
|
|
if (ret)
|
|
return ret;
|
|
|
|
iwl_mvm_dealloc_int_sta(mvm, bsta);
|
|
return ret;
|
|
}
|
|
|
|
#define IWL_MAX_RX_BA_SESSIONS 16
|
|
|
|
int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
|
|
int tid, u16 ssn, bool start)
|
|
{
|
|
struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
|
|
struct iwl_mvm_add_sta_cmd_v6 cmd = {};
|
|
int ret;
|
|
u32 status;
|
|
|
|
lockdep_assert_held(&mvm->mutex);
|
|
|
|
if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) {
|
|
IWL_WARN(mvm, "Not enough RX BA SESSIONS\n");
|
|
return -ENOSPC;
|
|
}
|
|
|
|
cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
|
|
cmd.sta_id = mvm_sta->sta_id;
|
|
cmd.add_modify = STA_MODE_MODIFY;
|
|
if (start) {
|
|
cmd.add_immediate_ba_tid = (u8) tid;
|
|
cmd.add_immediate_ba_ssn = cpu_to_le16(ssn);
|
|
} else {
|
|
cmd.remove_immediate_ba_tid = (u8) tid;
|
|
}
|
|
cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID :
|
|
STA_MODIFY_REMOVE_BA_TID;
|
|
|
|
status = ADD_STA_SUCCESS;
|
|
ret = iwl_mvm_send_add_sta_cmd_status(mvm, &cmd, &status);
|
|
if (ret)
|
|
return ret;
|
|
|
|
switch (status) {
|
|
case ADD_STA_SUCCESS:
|
|
IWL_DEBUG_INFO(mvm, "RX BA Session %sed in fw\n",
|
|
start ? "start" : "stopp");
|
|
break;
|
|
case ADD_STA_IMMEDIATE_BA_FAILURE:
|
|
IWL_WARN(mvm, "RX BA Session refused by fw\n");
|
|
ret = -ENOSPC;
|
|
break;
|
|
default:
|
|
ret = -EIO;
|
|
IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n",
|
|
start ? "start" : "stopp", status);
|
|
break;
|
|
}
|
|
|
|
if (!ret) {
|
|
if (start)
|
|
mvm->rx_ba_sessions++;
|
|
else if (mvm->rx_ba_sessions > 0)
|
|
/* check that restart flow didn't zero the counter */
|
|
mvm->rx_ba_sessions--;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
|
|
int tid, u8 queue, bool start)
|
|
{
|
|
struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
|
|
struct iwl_mvm_add_sta_cmd_v6 cmd = {};
|
|
int ret;
|
|
u32 status;
|
|
|
|
lockdep_assert_held(&mvm->mutex);
|
|
|
|
if (start) {
|
|
mvm_sta->tfd_queue_msk |= BIT(queue);
|
|
mvm_sta->tid_disable_agg &= ~BIT(tid);
|
|
} else {
|
|
mvm_sta->tfd_queue_msk &= ~BIT(queue);
|
|
mvm_sta->tid_disable_agg |= BIT(tid);
|
|
}
|
|
|
|
cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
|
|
cmd.sta_id = mvm_sta->sta_id;
|
|
cmd.add_modify = STA_MODE_MODIFY;
|
|
cmd.modify_mask = STA_MODIFY_QUEUES | STA_MODIFY_TID_DISABLE_TX;
|
|
cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk);
|
|
cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg);
|
|
|
|
status = ADD_STA_SUCCESS;
|
|
ret = iwl_mvm_send_add_sta_cmd_status(mvm, &cmd, &status);
|
|
if (ret)
|
|
return ret;
|
|
|
|
switch (status) {
|
|
case ADD_STA_SUCCESS:
|
|
break;
|
|
default:
|
|
ret = -EIO;
|
|
IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n",
|
|
start ? "start" : "stopp", status);
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const u8 tid_to_ac[] = {
|
|
IEEE80211_AC_BE,
|
|
IEEE80211_AC_BK,
|
|
IEEE80211_AC_BK,
|
|
IEEE80211_AC_BE,
|
|
IEEE80211_AC_VI,
|
|
IEEE80211_AC_VI,
|
|
IEEE80211_AC_VO,
|
|
IEEE80211_AC_VO,
|
|
};
|
|
|
|
int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
|
|
struct ieee80211_sta *sta, u16 tid, u16 *ssn)
|
|
{
|
|
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
|
|
struct iwl_mvm_tid_data *tid_data;
|
|
int txq_id;
|
|
|
|
if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))
|
|
return -EINVAL;
|
|
|
|
if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) {
|
|
IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n",
|
|
mvmsta->tid_data[tid].state);
|
|
return -ENXIO;
|
|
}
|
|
|
|
lockdep_assert_held(&mvm->mutex);
|
|
|
|
for (txq_id = mvm->first_agg_queue;
|
|
txq_id <= mvm->last_agg_queue; txq_id++)
|
|
if (mvm->queue_to_mac80211[txq_id] ==
|
|
IWL_INVALID_MAC80211_QUEUE)
|
|
break;
|
|
|
|
if (txq_id > mvm->last_agg_queue) {
|
|
IWL_ERR(mvm, "Failed to allocate agg queue\n");
|
|
return -EIO;
|
|
}
|
|
|
|
/* the new tx queue is still connected to the same mac80211 queue */
|
|
mvm->queue_to_mac80211[txq_id] = vif->hw_queue[tid_to_ac[tid]];
|
|
|
|
spin_lock_bh(&mvmsta->lock);
|
|
tid_data = &mvmsta->tid_data[tid];
|
|
tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
|
|
tid_data->txq_id = txq_id;
|
|
*ssn = tid_data->ssn;
|
|
|
|
IWL_DEBUG_TX_QUEUES(mvm,
|
|
"Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n",
|
|
mvmsta->sta_id, tid, txq_id, tid_data->ssn,
|
|
tid_data->next_reclaimed);
|
|
|
|
if (tid_data->ssn == tid_data->next_reclaimed) {
|
|
tid_data->state = IWL_AGG_STARTING;
|
|
ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
|
|
} else {
|
|
tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA;
|
|
}
|
|
|
|
spin_unlock_bh(&mvmsta->lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
|
|
struct ieee80211_sta *sta, u16 tid, u8 buf_size)
|
|
{
|
|
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
|
|
struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
|
|
int queue, fifo, ret;
|
|
u16 ssn;
|
|
|
|
buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
|
|
|
|
spin_lock_bh(&mvmsta->lock);
|
|
ssn = tid_data->ssn;
|
|
queue = tid_data->txq_id;
|
|
tid_data->state = IWL_AGG_ON;
|
|
tid_data->ssn = 0xffff;
|
|
spin_unlock_bh(&mvmsta->lock);
|
|
|
|
fifo = iwl_mvm_ac_to_tx_fifo[tid_to_ac[tid]];
|
|
|
|
ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
|
|
if (ret)
|
|
return -EIO;
|
|
|
|
iwl_trans_txq_enable(mvm->trans, queue, fifo, mvmsta->sta_id, tid,
|
|
buf_size, ssn);
|
|
|
|
/*
|
|
* Even though in theory the peer could have different
|
|
* aggregation reorder buffer sizes for different sessions,
|
|
* our ucode doesn't allow for that and has a global limit
|
|
* for each station. Therefore, use the minimum of all the
|
|
* aggregation sessions and our default value.
|
|
*/
|
|
mvmsta->max_agg_bufsize =
|
|
min(mvmsta->max_agg_bufsize, buf_size);
|
|
mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize;
|
|
|
|
IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n",
|
|
sta->addr, tid);
|
|
|
|
if (mvm->cfg->ht_params->use_rts_for_aggregation) {
|
|
/*
|
|
* switch to RTS/CTS if it is the prefer protection
|
|
* method for HT traffic
|
|
* this function also sends the LQ command
|
|
*/
|
|
return iwl_mvm_tx_protection(mvm, mvmsta, true);
|
|
/*
|
|
* TODO: remove the TLC_RTS flag when we tear down the last
|
|
* AGG session (agg_tids_count in DVM)
|
|
*/
|
|
}
|
|
|
|
return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false);
|
|
}
|
|
|
|
int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
|
|
struct ieee80211_sta *sta, u16 tid)
|
|
{
|
|
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
|
|
struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
|
|
u16 txq_id;
|
|
int err;
|
|
|
|
|
|
/*
|
|
* If mac80211 is cleaning its state, then say that we finished since
|
|
* our state has been cleared anyway.
|
|
*/
|
|
if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
|
|
ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
|
|
return 0;
|
|
}
|
|
|
|
spin_lock_bh(&mvmsta->lock);
|
|
|
|
txq_id = tid_data->txq_id;
|
|
|
|
IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n",
|
|
mvmsta->sta_id, tid, txq_id, tid_data->state);
|
|
|
|
switch (tid_data->state) {
|
|
case IWL_AGG_ON:
|
|
tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);
|
|
|
|
IWL_DEBUG_TX_QUEUES(mvm,
|
|
"ssn = %d, next_recl = %d\n",
|
|
tid_data->ssn, tid_data->next_reclaimed);
|
|
|
|
/* There are still packets for this RA / TID in the HW */
|
|
if (tid_data->ssn != tid_data->next_reclaimed) {
|
|
tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA;
|
|
err = 0;
|
|
break;
|
|
}
|
|
|
|
tid_data->ssn = 0xffff;
|
|
iwl_trans_txq_disable(mvm->trans, txq_id);
|
|
/* fall through */
|
|
case IWL_AGG_STARTING:
|
|
case IWL_EMPTYING_HW_QUEUE_ADDBA:
|
|
/*
|
|
* The agg session has been stopped before it was set up. This
|
|
* can happen when the AddBA timer times out for example.
|
|
*/
|
|
|
|
/* No barriers since we are under mutex */
|
|
lockdep_assert_held(&mvm->mutex);
|
|
mvm->queue_to_mac80211[txq_id] = IWL_INVALID_MAC80211_QUEUE;
|
|
|
|
ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
|
|
tid_data->state = IWL_AGG_OFF;
|
|
err = 0;
|
|
break;
|
|
default:
|
|
IWL_ERR(mvm,
|
|
"Stopping AGG while state not ON or starting for %d on %d (%d)\n",
|
|
mvmsta->sta_id, tid, tid_data->state);
|
|
IWL_ERR(mvm,
|
|
"\ttid_data->txq_id = %d\n", tid_data->txq_id);
|
|
err = -EINVAL;
|
|
}
|
|
|
|
spin_unlock_bh(&mvmsta->lock);
|
|
|
|
return err;
|
|
}
|
|
|
|
int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
|
|
struct ieee80211_sta *sta, u16 tid)
|
|
{
|
|
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
|
|
struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
|
|
u16 txq_id;
|
|
enum iwl_mvm_agg_state old_state;
|
|
|
|
/*
|
|
* First set the agg state to OFF to avoid calling
|
|
* ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty.
|
|
*/
|
|
spin_lock_bh(&mvmsta->lock);
|
|
txq_id = tid_data->txq_id;
|
|
IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n",
|
|
mvmsta->sta_id, tid, txq_id, tid_data->state);
|
|
old_state = tid_data->state;
|
|
tid_data->state = IWL_AGG_OFF;
|
|
spin_unlock_bh(&mvmsta->lock);
|
|
|
|
if (old_state >= IWL_AGG_ON) {
|
|
if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), true))
|
|
IWL_ERR(mvm, "Couldn't flush the AGG queue\n");
|
|
|
|
iwl_trans_txq_disable(mvm->trans, tid_data->txq_id);
|
|
}
|
|
|
|
mvm->queue_to_mac80211[tid_data->txq_id] =
|
|
IWL_INVALID_MAC80211_QUEUE;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm)
|
|
{
|
|
int i;
|
|
|
|
lockdep_assert_held(&mvm->mutex);
|
|
|
|
i = find_first_zero_bit(mvm->fw_key_table, STA_KEY_MAX_NUM);
|
|
|
|
if (i == STA_KEY_MAX_NUM)
|
|
return STA_KEY_IDX_INVALID;
|
|
|
|
__set_bit(i, mvm->fw_key_table);
|
|
|
|
return i;
|
|
}
|
|
|
|
static u8 iwl_mvm_get_key_sta_id(struct ieee80211_vif *vif,
|
|
struct ieee80211_sta *sta)
|
|
{
|
|
struct iwl_mvm_vif *mvmvif = (void *)vif->drv_priv;
|
|
|
|
if (sta) {
|
|
struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
|
|
|
|
return mvm_sta->sta_id;
|
|
}
|
|
|
|
/*
|
|
* The device expects GTKs for station interfaces to be
|
|
* installed as GTKs for the AP station. If we have no
|
|
* station ID, then use AP's station ID.
|
|
*/
|
|
if (vif->type == NL80211_IFTYPE_STATION &&
|
|
mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT)
|
|
return mvmvif->ap_sta_id;
|
|
|
|
return IWL_MVM_STATION_COUNT;
|
|
}
|
|
|
|
static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm,
|
|
struct iwl_mvm_sta *mvm_sta,
|
|
struct ieee80211_key_conf *keyconf,
|
|
u8 sta_id, u32 tkip_iv32, u16 *tkip_p1k,
|
|
u32 cmd_flags)
|
|
{
|
|
__le16 key_flags;
|
|
struct iwl_mvm_add_sta_key_cmd cmd = {};
|
|
int ret, status;
|
|
u16 keyidx;
|
|
int i;
|
|
u32 mac_id_n_color = mvm_sta->mac_id_n_color;
|
|
|
|
keyidx = (keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &
|
|
STA_KEY_FLG_KEYID_MSK;
|
|
key_flags = cpu_to_le16(keyidx);
|
|
key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP);
|
|
|
|
switch (keyconf->cipher) {
|
|
case WLAN_CIPHER_SUITE_TKIP:
|
|
key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP);
|
|
cmd.tkip_rx_tsc_byte2 = tkip_iv32;
|
|
for (i = 0; i < 5; i++)
|
|
cmd.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]);
|
|
memcpy(cmd.key, keyconf->key, keyconf->keylen);
|
|
break;
|
|
case WLAN_CIPHER_SUITE_CCMP:
|
|
key_flags |= cpu_to_le16(STA_KEY_FLG_CCM);
|
|
memcpy(cmd.key, keyconf->key, keyconf->keylen);
|
|
break;
|
|
default:
|
|
key_flags |= cpu_to_le16(STA_KEY_FLG_EXT);
|
|
memcpy(cmd.key, keyconf->key, keyconf->keylen);
|
|
}
|
|
|
|
if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE))
|
|
key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
|
|
|
|
cmd.key_offset = keyconf->hw_key_idx;
|
|
cmd.key_flags = key_flags;
|
|
cmd.sta_id = sta_id;
|
|
|
|
status = ADD_STA_SUCCESS;
|
|
if (cmd_flags == CMD_SYNC)
|
|
ret = iwl_mvm_send_add_sta_key_cmd_status(mvm, &cmd,
|
|
mac_id_n_color,
|
|
&status);
|
|
else
|
|
ret = iwl_mvm_send_add_sta_key_cmd(mvm, CMD_ASYNC, &cmd,
|
|
mac_id_n_color);
|
|
|
|
switch (status) {
|
|
case ADD_STA_SUCCESS:
|
|
IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n");
|
|
break;
|
|
default:
|
|
ret = -EIO;
|
|
IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n");
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm,
|
|
struct ieee80211_key_conf *keyconf,
|
|
u8 sta_id, bool remove_key)
|
|
{
|
|
struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {};
|
|
|
|
/* verify the key details match the required command's expectations */
|
|
if (WARN_ON((keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC) ||
|
|
(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||
|
|
(keyconf->keyidx != 4 && keyconf->keyidx != 5)))
|
|
return -EINVAL;
|
|
|
|
igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx);
|
|
igtk_cmd.sta_id = cpu_to_le32(sta_id);
|
|
|
|
if (remove_key) {
|
|
igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID);
|
|
} else {
|
|
struct ieee80211_key_seq seq;
|
|
const u8 *pn;
|
|
|
|
memcpy(igtk_cmd.IGTK, keyconf->key, keyconf->keylen);
|
|
ieee80211_aes_cmac_calculate_k1_k2(keyconf,
|
|
igtk_cmd.K1, igtk_cmd.K2);
|
|
ieee80211_get_key_rx_seq(keyconf, 0, &seq);
|
|
pn = seq.aes_cmac.pn;
|
|
igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) |
|
|
((u64) pn[4] << 8) |
|
|
((u64) pn[3] << 16) |
|
|
((u64) pn[2] << 24) |
|
|
((u64) pn[1] << 32) |
|
|
((u64) pn[0] << 40));
|
|
}
|
|
|
|
IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n",
|
|
remove_key ? "removing" : "installing",
|
|
igtk_cmd.sta_id);
|
|
|
|
return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, CMD_SYNC,
|
|
sizeof(igtk_cmd), &igtk_cmd);
|
|
}
|
|
|
|
|
|
static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm,
|
|
struct ieee80211_vif *vif,
|
|
struct ieee80211_sta *sta)
|
|
{
|
|
struct iwl_mvm_vif *mvmvif = (void *)vif->drv_priv;
|
|
|
|
if (sta)
|
|
return sta->addr;
|
|
|
|
if (vif->type == NL80211_IFTYPE_STATION &&
|
|
mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
|
|
u8 sta_id = mvmvif->ap_sta_id;
|
|
sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
|
|
lockdep_is_held(&mvm->mutex));
|
|
return sta->addr;
|
|
}
|
|
|
|
|
|
return NULL;
|
|
}
|
|
|
|
int iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
|
|
struct ieee80211_vif *vif,
|
|
struct ieee80211_sta *sta,
|
|
struct ieee80211_key_conf *keyconf,
|
|
bool have_key_offset)
|
|
{
|
|
struct iwl_mvm_sta *mvm_sta;
|
|
int ret;
|
|
u8 *addr, sta_id;
|
|
struct ieee80211_key_seq seq;
|
|
u16 p1k[5];
|
|
|
|
lockdep_assert_held(&mvm->mutex);
|
|
|
|
/* Get the station id from the mvm local station table */
|
|
sta_id = iwl_mvm_get_key_sta_id(vif, sta);
|
|
if (sta_id == IWL_MVM_STATION_COUNT) {
|
|
IWL_ERR(mvm, "Failed to find station id\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
|
|
ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false);
|
|
goto end;
|
|
}
|
|
|
|
/*
|
|
* It is possible that the 'sta' parameter is NULL, and thus
|
|
* there is a need to retrieve the sta from the local station table.
|
|
*/
|
|
if (!sta) {
|
|
sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
|
|
lockdep_is_held(&mvm->mutex));
|
|
if (IS_ERR_OR_NULL(sta)) {
|
|
IWL_ERR(mvm, "Invalid station id\n");
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
mvm_sta = (struct iwl_mvm_sta *)sta->drv_priv;
|
|
if (WARN_ON_ONCE(mvm_sta->vif != vif))
|
|
return -EINVAL;
|
|
|
|
if (!have_key_offset) {
|
|
/*
|
|
* The D3 firmware hardcodes the PTK offset to 0, so we have to
|
|
* configure it there. As a result, this workaround exists to
|
|
* let the caller set the key offset (hw_key_idx), see d3.c.
|
|
*/
|
|
keyconf->hw_key_idx = iwl_mvm_set_fw_key_idx(mvm);
|
|
if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
|
|
return -ENOSPC;
|
|
}
|
|
|
|
switch (keyconf->cipher) {
|
|
case WLAN_CIPHER_SUITE_TKIP:
|
|
addr = iwl_mvm_get_mac_addr(mvm, vif, sta);
|
|
/* get phase 1 key from mac80211 */
|
|
ieee80211_get_key_rx_seq(keyconf, 0, &seq);
|
|
ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k);
|
|
ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, sta_id,
|
|
seq.tkip.iv32, p1k, CMD_SYNC);
|
|
break;
|
|
case WLAN_CIPHER_SUITE_CCMP:
|
|
ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, sta_id,
|
|
0, NULL, CMD_SYNC);
|
|
break;
|
|
default:
|
|
ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf,
|
|
sta_id, 0, NULL, CMD_SYNC);
|
|
}
|
|
|
|
if (ret)
|
|
__clear_bit(keyconf->hw_key_idx, mvm->fw_key_table);
|
|
|
|
end:
|
|
IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
|
|
keyconf->cipher, keyconf->keylen, keyconf->keyidx,
|
|
sta->addr, ret);
|
|
return ret;
|
|
}
|
|
|
|
int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm,
|
|
struct ieee80211_vif *vif,
|
|
struct ieee80211_sta *sta,
|
|
struct ieee80211_key_conf *keyconf)
|
|
{
|
|
struct iwl_mvm_sta *mvm_sta;
|
|
struct iwl_mvm_add_sta_key_cmd cmd = {};
|
|
__le16 key_flags;
|
|
int ret, status;
|
|
u8 sta_id;
|
|
|
|
lockdep_assert_held(&mvm->mutex);
|
|
|
|
/* Get the station id from the mvm local station table */
|
|
sta_id = iwl_mvm_get_key_sta_id(vif, sta);
|
|
|
|
IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n",
|
|
keyconf->keyidx, sta_id);
|
|
|
|
if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
|
|
return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true);
|
|
|
|
ret = __test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table);
|
|
if (!ret) {
|
|
IWL_ERR(mvm, "offset %d not used in fw key table.\n",
|
|
keyconf->hw_key_idx);
|
|
return -ENOENT;
|
|
}
|
|
|
|
if (sta_id == IWL_MVM_STATION_COUNT) {
|
|
IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* It is possible that the 'sta' parameter is NULL, and thus
|
|
* there is a need to retrieve the sta from the local station table,
|
|
* for example when a GTK is removed (where the sta_id will then be
|
|
* the AP ID, and no station was passed by mac80211.)
|
|
*/
|
|
if (!sta) {
|
|
sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
|
|
lockdep_is_held(&mvm->mutex));
|
|
if (!sta) {
|
|
IWL_ERR(mvm, "Invalid station id\n");
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
mvm_sta = (struct iwl_mvm_sta *)sta->drv_priv;
|
|
if (WARN_ON_ONCE(mvm_sta->vif != vif))
|
|
return -EINVAL;
|
|
|
|
key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &
|
|
STA_KEY_FLG_KEYID_MSK);
|
|
key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP);
|
|
key_flags |= cpu_to_le16(STA_KEY_NOT_VALID);
|
|
|
|
if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE))
|
|
key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
|
|
|
|
cmd.key_flags = key_flags;
|
|
cmd.key_offset = keyconf->hw_key_idx;
|
|
cmd.sta_id = sta_id;
|
|
|
|
status = ADD_STA_SUCCESS;
|
|
ret = iwl_mvm_send_add_sta_key_cmd_status(mvm, &cmd,
|
|
mvm_sta->mac_id_n_color,
|
|
&status);
|
|
|
|
switch (status) {
|
|
case ADD_STA_SUCCESS:
|
|
IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n");
|
|
break;
|
|
default:
|
|
ret = -EIO;
|
|
IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n");
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm,
|
|
struct ieee80211_vif *vif,
|
|
struct ieee80211_key_conf *keyconf,
|
|
struct ieee80211_sta *sta, u32 iv32,
|
|
u16 *phase1key)
|
|
{
|
|
struct iwl_mvm_sta *mvm_sta;
|
|
u8 sta_id = iwl_mvm_get_key_sta_id(vif, sta);
|
|
|
|
if (WARN_ON_ONCE(sta_id == IWL_MVM_STATION_COUNT))
|
|
return;
|
|
|
|
rcu_read_lock();
|
|
|
|
if (!sta) {
|
|
sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
|
|
if (WARN_ON(IS_ERR_OR_NULL(sta))) {
|
|
rcu_read_unlock();
|
|
return;
|
|
}
|
|
}
|
|
|
|
mvm_sta = (void *)sta->drv_priv;
|
|
iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, sta_id,
|
|
iv32, phase1key, CMD_ASYNC);
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm,
|
|
struct ieee80211_sta *sta)
|
|
{
|
|
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
|
|
struct iwl_mvm_add_sta_cmd_v6 cmd = {
|
|
.add_modify = STA_MODE_MODIFY,
|
|
.sta_id = mvmsta->sta_id,
|
|
.station_flags_msk = cpu_to_le32(STA_FLG_PS),
|
|
.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
|
|
};
|
|
int ret;
|
|
|
|
ret = iwl_mvm_send_add_sta_cmd(mvm, CMD_ASYNC, &cmd);
|
|
if (ret)
|
|
IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
|
|
}
|
|
|
|
void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm,
|
|
struct ieee80211_sta *sta,
|
|
enum ieee80211_frame_release_type reason,
|
|
u16 cnt)
|
|
{
|
|
u16 sleep_state_flags =
|
|
(reason == IEEE80211_FRAME_RELEASE_UAPSD) ?
|
|
STA_SLEEP_STATE_UAPSD : STA_SLEEP_STATE_PS_POLL;
|
|
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
|
|
struct iwl_mvm_add_sta_cmd_v6 cmd = {
|
|
.add_modify = STA_MODE_MODIFY,
|
|
.sta_id = mvmsta->sta_id,
|
|
.modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT,
|
|
.sleep_tx_count = cpu_to_le16(cnt),
|
|
.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
|
|
/*
|
|
* Same modify mask for sleep_tx_count and sleep_state_flags so
|
|
* we must set the sleep_state_flags too.
|
|
*/
|
|
.sleep_state_flags = cpu_to_le16(sleep_state_flags),
|
|
};
|
|
int ret;
|
|
|
|
/* TODO: somehow the fw doesn't seem to take PS_POLL into account */
|
|
ret = iwl_mvm_send_add_sta_cmd(mvm, CMD_ASYNC, &cmd);
|
|
if (ret)
|
|
IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
|
|
}
|