1 files changed, 217 insertions, 0 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/offloading.c b/drivers/net/wireless/intel/iwlwifi/mvm/offloading.c
new file mode 100644
index 000000000000..68b0169c8892
--- /dev/null
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/offloading.c
@@ -0,0 +1,217 @@
+/******************************************************************************
+ *
+ * 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/ipv6.h>
+#include <net/addrconf.h>
+#include "mvm.h"
+
+void iwl_mvm_set_wowlan_qos_seq(struct iwl_mvm_sta *mvm_ap_sta,
+                                struct iwl_wowlan_config_cmd *cmd)
+{
+        int i;
+
+        /*
+         * For QoS counters, we store the one to use next, so subtract 0x10
+         * since the uCode will add 0x10 *before* using the value while we
+         * increment after using the value (i.e. store the next value to use).
+         */
+        for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
+                u16 seq = mvm_ap_sta->tid_data[i].seq_number;
+                seq -= 0x10;
+                cmd->qos_seq[i] = cpu_to_le16(seq);
+        }
+}
+
+int iwl_mvm_send_proto_offload(struct iwl_mvm *mvm,
+                               struct ieee80211_vif *vif,
+                               bool disable_offloading,
+                               u32 cmd_flags)
+{
+        union {
+                struct iwl_proto_offload_cmd_v1 v1;
+                struct iwl_proto_offload_cmd_v2 v2;
+                struct iwl_proto_offload_cmd_v3_small v3s;
+                struct iwl_proto_offload_cmd_v3_large v3l;
+        } cmd = {};
+        struct iwl_host_cmd hcmd = {
+                .id = PROT_OFFLOAD_CONFIG_CMD,
+                .flags = cmd_flags,
+                .data[0] = &cmd,
+                .dataflags[0] = IWL_HCMD_DFL_DUP,
+        };
+        struct iwl_proto_offload_cmd_common *common;
+        u32 enabled = 0, size;
+        u32 capa_flags = mvm->fw->ucode_capa.flags;
+#if IS_ENABLED(CONFIG_IPV6)
+        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+        int i;
+
+        if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL ||
+            capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_LARGE) {
+                struct iwl_ns_config *nsc;
+                struct iwl_targ_addr *addrs;
+                int n_nsc, n_addrs;
+                int c;
+
+                if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL) {
+                        nsc = cmd.v3s.ns_config;
+                        n_nsc = IWL_PROTO_OFFLOAD_NUM_NS_CONFIG_V3S;
+                        addrs = cmd.v3s.targ_addrs;
+                        n_addrs = IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V3S;
+                } else {
+                        nsc = cmd.v3l.ns_config;
+                        n_nsc = IWL_PROTO_OFFLOAD_NUM_NS_CONFIG_V3L;
+                        addrs = cmd.v3l.targ_addrs;
+                        n_addrs = IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V3L;
+                }
+
+                if (mvmvif->num_target_ipv6_addrs)
+                        enabled |= IWL_D3_PROTO_OFFLOAD_NS;
+
+                /*
+                 * For each address we have (and that will fit) fill a target
+                 * address struct and combine for NS offload structs with the
+                 * solicited node addresses.
+                 */
+                for (i = 0, c = 0;
+                     i < mvmvif->num_target_ipv6_addrs &&
+                     i < n_addrs && c < n_nsc; i++) {
+                        struct in6_addr solicited_addr;
+                        int j;
+
+                        addrconf_addr_solict_mult(&mvmvif->target_ipv6_addrs[i],
+                                                  &solicited_addr);
+                        for (j = 0; j < c; j++)
+                                if (ipv6_addr_cmp(&nsc[j].dest_ipv6_addr,
+                                                  &solicited_addr) == 0)
+                                        break;
+                        if (j == c)
+                                c++;
+                        addrs[i].addr = mvmvif->target_ipv6_addrs[i];
+                        addrs[i].config_num = cpu_to_le32(j);
+                        nsc[j].dest_ipv6_addr = solicited_addr;
+                        memcpy(nsc[j].target_mac_addr, vif->addr, ETH_ALEN);
+                }
+
+                if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL)
+                        cmd.v3s.num_valid_ipv6_addrs = cpu_to_le32(i);
+                else
+                        cmd.v3l.num_valid_ipv6_addrs = cpu_to_le32(i);
+        } else if (capa_flags & IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS) {
+                if (mvmvif->num_target_ipv6_addrs) {
+                        enabled |= IWL_D3_PROTO_OFFLOAD_NS;
+                        memcpy(cmd.v2.ndp_mac_addr, vif->addr, ETH_ALEN);
+                }
+
+                BUILD_BUG_ON(sizeof(cmd.v2.target_ipv6_addr[0]) !=
+                             sizeof(mvmvif->target_ipv6_addrs[0]));
+
+                for (i = 0; i < min(mvmvif->num_target_ipv6_addrs,
+                                    IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V2); i++)
+                        memcpy(cmd.v2.target_ipv6_addr[i],
+                               &mvmvif->target_ipv6_addrs[i],
+                               sizeof(cmd.v2.target_ipv6_addr[i]));
+        } else {
+                if (mvmvif->num_target_ipv6_addrs) {
+                        enabled |= IWL_D3_PROTO_OFFLOAD_NS;
+                        memcpy(cmd.v1.ndp_mac_addr, vif->addr, ETH_ALEN);
+                }
+
+                BUILD_BUG_ON(sizeof(cmd.v1.target_ipv6_addr[0]) !=
+                             sizeof(mvmvif->target_ipv6_addrs[0]));
+
+                for (i = 0; i < min(mvmvif->num_target_ipv6_addrs,
+                                    IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V1); i++)
+                        memcpy(cmd.v1.target_ipv6_addr[i],
+                               &mvmvif->target_ipv6_addrs[i],
+                               sizeof(cmd.v1.target_ipv6_addr[i]));
+        }
+#endif
+
+        if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL) {
+                common = &cmd.v3s.common;
+                size = sizeof(cmd.v3s);
+        } else if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_LARGE) {
+                common = &cmd.v3l.common;
+                size = sizeof(cmd.v3l);
+        } else if (capa_flags & IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS) {
+                common = &cmd.v2.common;
+                size = sizeof(cmd.v2);
+        } else {
+                common = &cmd.v1.common;
+                size = sizeof(cmd.v1);
+        }
+
+        if (vif->bss_conf.arp_addr_cnt) {
+                enabled |= IWL_D3_PROTO_OFFLOAD_ARP;
+                common->host_ipv4_addr = vif->bss_conf.arp_addr_list[0];
+                memcpy(common->arp_mac_addr, vif->addr, ETH_ALEN);
+        }
+
+        if (!disable_offloading)
+                common->enabled = cpu_to_le32(enabled);
+
+        hcmd.len[0] = size;
+        return iwl_mvm_send_cmd(mvm, &hcmd);
+}