1 /******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
10 * Copyright(c) 2015 Intel Deutschland GmbH
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of version 2 of the GNU General Public License as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * The full GNU General Public License is included in this distribution
22 * in the file called COPYING.
23 *
24 * Contact Information:
25 * Intel Linux Wireless <linuxwifi@intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 * BSD LICENSE
29 *
30 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
31 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
32 * Copyright(c) 2015 Intel Deutschland GmbH
33 * All rights reserved.
34 *
35 * Redistribution and use in source and binary forms, with or without
36 * modification, are permitted provided that the following conditions
37 * are met:
38 *
39 * * Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * * Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in
43 * the documentation and/or other materials provided with the
44 * distribution.
45 * * Neither the name Intel Corporation nor the names of its
46 * contributors may be used to endorse or promote products derived
47 * from this software without specific prior written permission.
48 *
49 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
50 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
51 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
52 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
53 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
54 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
55 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
56 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
57 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
58 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
59 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
60 *
61 *****************************************************************************/
62 #include <net/ipv6.h>
63 #include <net/addrconf.h>
64 #include <linux/bitops.h>
65 #include "mvm.h"
66
67 void iwl_mvm_set_wowlan_qos_seq(struct iwl_mvm_sta *mvm_ap_sta,
68 struct iwl_wowlan_config_cmd *cmd)
69 {
70 int i;
71
72 /*
73 * For QoS counters, we store the one to use next, so subtract 0x10
74 * since the uCode will add 0x10 *before* using the value while we
75 * increment after using the value (i.e. store the next value to use).
76 */
77 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
78 u16 seq = mvm_ap_sta->tid_data[i].seq_number;
79 seq -= 0x10;
80 cmd->qos_seq[i] = cpu_to_le16(seq);
81 }
82 }
83
84 int iwl_mvm_send_proto_offload(struct iwl_mvm *mvm,
85 struct ieee80211_vif *vif,
86 bool disable_offloading,
87 bool offload_ns,
88 u32 cmd_flags)
89 {
90 union {
91 struct iwl_proto_offload_cmd_v1 v1;
92 struct iwl_proto_offload_cmd_v2 v2;
93 struct iwl_proto_offload_cmd_v3_small v3s;
94 struct iwl_proto_offload_cmd_v3_large v3l;
95 } cmd = {};
96 struct iwl_host_cmd hcmd = {
97 .id = PROT_OFFLOAD_CONFIG_CMD,
98 .flags = cmd_flags,
99 .data[0] = &cmd,
100 .dataflags[0] = IWL_HCMD_DFL_DUP,
101 };
102 struct iwl_proto_offload_cmd_common *common;
103 u32 enabled = 0, size;
104 u32 capa_flags = mvm->fw->ucode_capa.flags;
105 #if IS_ENABLED(CONFIG_IPV6)
106 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
107 int i;
108 /*
109 * Skip tentative address when ns offload is enabled to avoid
110 * violating RFC4862.
111 * Keep tentative address when ns offload is disabled so the NS packets
112 * will not be filtered out and will wake up the host.
113 */
114 bool skip_tentative = offload_ns;
115
116 if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL ||
117 capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_LARGE) {
118 struct iwl_ns_config *nsc;
119 struct iwl_targ_addr *addrs;
120 int n_nsc, n_addrs;
121 int c;
122 int num_skipped = 0;
123
124 if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL) {
125 nsc = cmd.v3s.ns_config;
126 n_nsc = IWL_PROTO_OFFLOAD_NUM_NS_CONFIG_V3S;
127 addrs = cmd.v3s.targ_addrs;
128 n_addrs = IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V3S;
129 } else {
130 nsc = cmd.v3l.ns_config;
131 n_nsc = IWL_PROTO_OFFLOAD_NUM_NS_CONFIG_V3L;
132 addrs = cmd.v3l.targ_addrs;
133 n_addrs = IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V3L;
134 }
135
136 /*
137 * For each address we have (and that will fit) fill a target
138 * address struct and combine for NS offload structs with the
139 * solicited node addresses.
140 */
141 for (i = 0, c = 0;
142 i < mvmvif->num_target_ipv6_addrs &&
143 i < n_addrs && c < n_nsc; i++) {
144 struct in6_addr solicited_addr;
145 int j;
146
147 if (skip_tentative &&
148 test_bit(i, mvmvif->tentative_addrs)) {
149 num_skipped++;
150 continue;
151 }
152
153 addrconf_addr_solict_mult(&mvmvif->target_ipv6_addrs[i],
154 &solicited_addr);
155 for (j = 0; j < c; j++)
156 if (ipv6_addr_cmp(&nsc[j].dest_ipv6_addr,
157 &solicited_addr) == 0)
158 break;
159 if (j == c)
160 c++;
161 addrs[i].addr = mvmvif->target_ipv6_addrs[i];
162 addrs[i].config_num = cpu_to_le32(j);
163 nsc[j].dest_ipv6_addr = solicited_addr;
164 memcpy(nsc[j].target_mac_addr, vif->addr, ETH_ALEN);
165 }
166
167 if (mvmvif->num_target_ipv6_addrs - num_skipped)
168 enabled |= IWL_D3_PROTO_IPV6_VALID;
169
170 if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL)
171 cmd.v3s.num_valid_ipv6_addrs =
172 cpu_to_le32(i - num_skipped);
173 else
174 cmd.v3l.num_valid_ipv6_addrs =
175 cpu_to_le32(i - num_skipped);
176 } else if (capa_flags & IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS) {
177 bool found = false;
178
179 BUILD_BUG_ON(sizeof(cmd.v2.target_ipv6_addr[0]) !=
180 sizeof(mvmvif->target_ipv6_addrs[0]));
181
182 for (i = 0; i < min(mvmvif->num_target_ipv6_addrs,
183 IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V2); i++) {
184 if (skip_tentative &&
185 test_bit(i, mvmvif->tentative_addrs))
186 continue;
187
188 memcpy(cmd.v2.target_ipv6_addr[i],
189 &mvmvif->target_ipv6_addrs[i],
190 sizeof(cmd.v2.target_ipv6_addr[i]));
191
192 found = true;
193 }
194 if (found) {
195 enabled |= IWL_D3_PROTO_IPV6_VALID;
196 memcpy(cmd.v2.ndp_mac_addr, vif->addr, ETH_ALEN);
197 }
198 } else {
199 bool found = false;
200 BUILD_BUG_ON(sizeof(cmd.v1.target_ipv6_addr[0]) !=
201 sizeof(mvmvif->target_ipv6_addrs[0]));
202
203 for (i = 0; i < min(mvmvif->num_target_ipv6_addrs,
204 IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V1); i++) {
205 if (skip_tentative &&
206 test_bit(i, mvmvif->tentative_addrs))
207 continue;
208
209 memcpy(cmd.v1.target_ipv6_addr[i],
210 &mvmvif->target_ipv6_addrs[i],
211 sizeof(cmd.v1.target_ipv6_addr[i]));
212
213 found = true;
214 }
215
216 if (found) {
217 enabled |= IWL_D3_PROTO_IPV6_VALID;
218 memcpy(cmd.v1.ndp_mac_addr, vif->addr, ETH_ALEN);
219 }
220 }
221
222 if (offload_ns && (enabled & IWL_D3_PROTO_IPV6_VALID))
223 enabled |= IWL_D3_PROTO_OFFLOAD_NS;
224 #endif
225 if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL) {
226 common = &cmd.v3s.common;
227 size = sizeof(cmd.v3s);
228 } else if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_LARGE) {
229 common = &cmd.v3l.common;
230 size = sizeof(cmd.v3l);
231 } else if (capa_flags & IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS) {
232 common = &cmd.v2.common;
233 size = sizeof(cmd.v2);
234 } else {
235 common = &cmd.v1.common;
236 size = sizeof(cmd.v1);
237 }
238
239 if (vif->bss_conf.arp_addr_cnt) {
240 enabled |= IWL_D3_PROTO_OFFLOAD_ARP | IWL_D3_PROTO_IPV4_VALID;
241 common->host_ipv4_addr = vif->bss_conf.arp_addr_list[0];
242 memcpy(common->arp_mac_addr, vif->addr, ETH_ALEN);
243 }
244
245 if (!disable_offloading)
246 common->enabled = cpu_to_le32(enabled);
247
248 hcmd.len[0] = size;
249 return iwl_mvm_send_cmd(mvm, &hcmd);
250 }