- 根目录:
- drivers
- net
- wireless
- iwlwifi
- mvm
- binding.c
/******************************************************************************
*
* 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.
*
* 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.
* 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"
struct iwl_mvm_iface_iterator_data {
struct ieee80211_vif *ignore_vif;
int idx;
struct iwl_mvm_phy_ctxt *phyctxt;
u16 ids[MAX_MACS_IN_BINDING];
u16 colors[MAX_MACS_IN_BINDING];
};
static int iwl_mvm_binding_cmd(struct iwl_mvm *mvm, u32 action,
struct iwl_mvm_iface_iterator_data *data)
{
struct iwl_binding_cmd cmd;
struct iwl_mvm_phy_ctxt *phyctxt = data->phyctxt;
int i, ret;
u32 status;
memset(&cmd, 0, sizeof(cmd));
cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(phyctxt->id,
phyctxt->color));
cmd.action = cpu_to_le32(action);
cmd.phy = cpu_to_le32(FW_CMD_ID_AND_COLOR(phyctxt->id,
phyctxt->color));
for (i = 0; i < MAX_MACS_IN_BINDING; i++)
cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
for (i = 0; i < data->idx; i++)
cmd.macs[i] = cpu_to_le32(FW_CMD_ID_AND_COLOR(data->ids[i],
data->colors[i]));
status = 0;
ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
sizeof(cmd), &cmd, &status);
if (ret) {
IWL_ERR(mvm, "Failed to send binding (action:%d): %d\n",
action, ret);
return ret;
}
if (status) {
IWL_ERR(mvm, "Binding command failed: %u\n", status);
ret = -EIO;
}
return ret;
}
static void iwl_mvm_iface_iterator(void *_data, u8 *mac,
struct ieee80211_vif *vif)
{
struct iwl_mvm_iface_iterator_data *data = _data;
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
if (vif == data->ignore_vif)
return;
if (mvmvif->phy_ctxt != data->phyctxt)
return;
if (WARN_ON_ONCE(data->idx >= MAX_MACS_IN_BINDING))
return;
data->ids[data->idx] = mvmvif->id;
data->colors[data->idx] = mvmvif->color;
data->idx++;
}
static int iwl_mvm_binding_update(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct iwl_mvm_phy_ctxt *phyctxt,
bool add)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mvm_iface_iterator_data data = {
.ignore_vif = vif,
.phyctxt = phyctxt,
};
u32 action = FW_CTXT_ACTION_MODIFY;
lockdep_assert_held(&mvm->mutex);
ieee80211_iterate_active_interfaces_atomic(mvm->hw,
IEEE80211_IFACE_ITER_NORMAL,
iwl_mvm_iface_iterator,
&data);
/*
* If there are no other interfaces yet we
* need to create a new binding.
*/
if (data.idx == 0) {
if (add)
action = FW_CTXT_ACTION_ADD;
else
action = FW_CTXT_ACTION_REMOVE;
}
if (add) {
if (WARN_ON_ONCE(data.idx >= MAX_MACS_IN_BINDING))
return -EINVAL;
data.ids[data.idx] = mvmvif->id;
data.colors[data.idx] = mvmvif->color;
data.idx++;
}
return iwl_mvm_binding_cmd(mvm, action, &data);
}
int iwl_mvm_binding_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
return -EINVAL;
/*
* Update SF - Disable if needed. if this fails, SF might still be on
* while many macs are bound, which is forbidden - so fail the binding.
*/
if (iwl_mvm_sf_update(mvm, vif, false))
return -EINVAL;
return iwl_mvm_binding_update(mvm, vif, mvmvif->phy_ctxt, true);
}
int iwl_mvm_binding_remove_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
int ret;
if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
return -EINVAL;
ret = iwl_mvm_binding_update(mvm, vif, mvmvif->phy_ctxt, false);
if (!ret)
if (iwl_mvm_sf_update(mvm, vif, true))
IWL_ERR(mvm, "Failed to update SF state\n");
return ret;
}