1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2012-2014 Intel Corporation
4 * Copyright (C) 2013-2014 Intel Mobile Communications GmbH
5 * Copyright (C) 2015 Intel Deutschland GmbH
6 */
7 #include <net/ipv6.h>
8 #include <net/addrconf.h>
9 #include <linux/bitops.h>
10 #include "mvm.h"
11
iwl_mvm_set_wowlan_qos_seq(struct iwl_mvm_sta * mvm_ap_sta,struct iwl_wowlan_config_cmd * cmd)12 void iwl_mvm_set_wowlan_qos_seq(struct iwl_mvm_sta *mvm_ap_sta,
13 struct iwl_wowlan_config_cmd *cmd)
14 {
15 int i;
16
17 /*
18 * For QoS counters, we store the one to use next, so subtract 0x10
19 * since the uCode will add 0x10 *before* using the value while we
20 * increment after using the value (i.e. store the next value to use).
21 */
22 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
23 u16 seq = mvm_ap_sta->tid_data[i].seq_number;
24 seq -= 0x10;
25 cmd->qos_seq[i] = cpu_to_le16(seq);
26 }
27 }
28
iwl_mvm_send_proto_offload(struct iwl_mvm * mvm,struct ieee80211_vif * vif,bool disable_offloading,bool offload_ns,u32 cmd_flags)29 int iwl_mvm_send_proto_offload(struct iwl_mvm *mvm,
30 struct ieee80211_vif *vif,
31 bool disable_offloading,
32 bool offload_ns,
33 u32 cmd_flags)
34 {
35 union {
36 struct iwl_proto_offload_cmd_v1 v1;
37 struct iwl_proto_offload_cmd_v2 v2;
38 struct iwl_proto_offload_cmd_v3_small v3s;
39 struct iwl_proto_offload_cmd_v3_large v3l;
40 } cmd = {};
41 struct iwl_host_cmd hcmd = {
42 .id = PROT_OFFLOAD_CONFIG_CMD,
43 .flags = cmd_flags,
44 .data[0] = &cmd,
45 .dataflags[0] = IWL_HCMD_DFL_DUP,
46 };
47 struct iwl_proto_offload_cmd_common *common;
48 u32 enabled = 0, size;
49 u32 capa_flags = mvm->fw->ucode_capa.flags;
50 #if IS_ENABLED(CONFIG_IPV6)
51 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
52 int i;
53 /*
54 * Skip tentative address when ns offload is enabled to avoid
55 * violating RFC4862.
56 * Keep tentative address when ns offload is disabled so the NS packets
57 * will not be filtered out and will wake up the host.
58 */
59 bool skip_tentative = offload_ns;
60
61 if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL ||
62 capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_LARGE) {
63 struct iwl_ns_config *nsc;
64 struct iwl_targ_addr *addrs;
65 int n_nsc, n_addrs;
66 int c;
67 int num_skipped = 0;
68
69 if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL) {
70 nsc = cmd.v3s.ns_config;
71 n_nsc = IWL_PROTO_OFFLOAD_NUM_NS_CONFIG_V3S;
72 addrs = cmd.v3s.targ_addrs;
73 n_addrs = IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V3S;
74 } else {
75 nsc = cmd.v3l.ns_config;
76 n_nsc = IWL_PROTO_OFFLOAD_NUM_NS_CONFIG_V3L;
77 addrs = cmd.v3l.targ_addrs;
78 n_addrs = IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V3L;
79 }
80
81 /*
82 * For each address we have (and that will fit) fill a target
83 * address struct and combine for NS offload structs with the
84 * solicited node addresses.
85 */
86 for (i = 0, c = 0;
87 i < mvmvif->num_target_ipv6_addrs &&
88 i < n_addrs && c < n_nsc; i++) {
89 struct in6_addr solicited_addr;
90 int j;
91
92 if (skip_tentative &&
93 test_bit(i, mvmvif->tentative_addrs)) {
94 num_skipped++;
95 continue;
96 }
97
98 addrconf_addr_solict_mult(&mvmvif->target_ipv6_addrs[i],
99 &solicited_addr);
100 for (j = 0; j < c; j++)
101 if (ipv6_addr_cmp(&nsc[j].dest_ipv6_addr,
102 &solicited_addr) == 0)
103 break;
104 if (j == c)
105 c++;
106 addrs[i].addr = mvmvif->target_ipv6_addrs[i];
107 addrs[i].config_num = cpu_to_le32(j);
108 nsc[j].dest_ipv6_addr = solicited_addr;
109 memcpy(nsc[j].target_mac_addr, vif->addr, ETH_ALEN);
110 }
111
112 if (mvmvif->num_target_ipv6_addrs - num_skipped)
113 enabled |= IWL_D3_PROTO_IPV6_VALID;
114
115 if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL)
116 cmd.v3s.num_valid_ipv6_addrs =
117 cpu_to_le32(i - num_skipped);
118 else
119 cmd.v3l.num_valid_ipv6_addrs =
120 cpu_to_le32(i - num_skipped);
121 } else if (capa_flags & IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS) {
122 bool found = false;
123
124 BUILD_BUG_ON(sizeof(cmd.v2.target_ipv6_addr[0]) !=
125 sizeof(mvmvif->target_ipv6_addrs[0]));
126
127 for (i = 0; i < min(mvmvif->num_target_ipv6_addrs,
128 IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V2); i++) {
129 if (skip_tentative &&
130 test_bit(i, mvmvif->tentative_addrs))
131 continue;
132
133 memcpy(cmd.v2.target_ipv6_addr[i],
134 &mvmvif->target_ipv6_addrs[i],
135 sizeof(cmd.v2.target_ipv6_addr[i]));
136
137 found = true;
138 }
139 if (found) {
140 enabled |= IWL_D3_PROTO_IPV6_VALID;
141 memcpy(cmd.v2.ndp_mac_addr, vif->addr, ETH_ALEN);
142 }
143 } else {
144 bool found = false;
145 BUILD_BUG_ON(sizeof(cmd.v1.target_ipv6_addr[0]) !=
146 sizeof(mvmvif->target_ipv6_addrs[0]));
147
148 for (i = 0; i < min(mvmvif->num_target_ipv6_addrs,
149 IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V1); i++) {
150 if (skip_tentative &&
151 test_bit(i, mvmvif->tentative_addrs))
152 continue;
153
154 memcpy(cmd.v1.target_ipv6_addr[i],
155 &mvmvif->target_ipv6_addrs[i],
156 sizeof(cmd.v1.target_ipv6_addr[i]));
157
158 found = true;
159 }
160
161 if (found) {
162 enabled |= IWL_D3_PROTO_IPV6_VALID;
163 memcpy(cmd.v1.ndp_mac_addr, vif->addr, ETH_ALEN);
164 }
165 }
166
167 if (offload_ns && (enabled & IWL_D3_PROTO_IPV6_VALID))
168 enabled |= IWL_D3_PROTO_OFFLOAD_NS;
169 #endif
170 if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL) {
171 common = &cmd.v3s.common;
172 size = sizeof(cmd.v3s);
173 } else if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_LARGE) {
174 common = &cmd.v3l.common;
175 size = sizeof(cmd.v3l);
176 } else if (capa_flags & IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS) {
177 common = &cmd.v2.common;
178 size = sizeof(cmd.v2);
179 } else {
180 common = &cmd.v1.common;
181 size = sizeof(cmd.v1);
182 }
183
184 if (vif->bss_conf.arp_addr_cnt) {
185 enabled |= IWL_D3_PROTO_OFFLOAD_ARP | IWL_D3_PROTO_IPV4_VALID;
186 common->host_ipv4_addr = vif->bss_conf.arp_addr_list[0];
187 memcpy(common->arp_mac_addr, vif->addr, ETH_ALEN);
188 }
189
190 if (!disable_offloading)
191 common->enabled = cpu_to_le32(enabled);
192
193 hcmd.len[0] = size;
194 return iwl_mvm_send_cmd(mvm, &hcmd);
195 }
196