--- /dev/null
+/******************************************************************************
+ *
+ * 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;
+}
Code Review / kvmfornfv.git / blobdiff