/****************************************************************************** * * 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; }