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-rw-r--r--net/wireless/util.c186
1 files changed, 9 insertions, 177 deletions
diff --git a/net/wireless/util.c b/net/wireless/util.c
index 4dde429441d..9c601d59b77 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -7,7 +7,6 @@
7#include <linux/bitops.h> 7#include <linux/bitops.h>
8#include <linux/etherdevice.h> 8#include <linux/etherdevice.h>
9#include <linux/slab.h> 9#include <linux/slab.h>
10#include <linux/crc32.h>
11#include <net/cfg80211.h> 10#include <net/cfg80211.h>
12#include <net/ip.h> 11#include <net/ip.h>
13#include "core.h" 12#include "core.h"
@@ -240,17 +239,6 @@ int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
240 return 0; 239 return 0;
241} 240}
242 241
243/* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
244/* Ethernet-II snap header (RFC1042 for most EtherTypes) */
245const unsigned char rfc1042_header[] __aligned(2) =
246 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
247EXPORT_SYMBOL(rfc1042_header);
248
249/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
250const unsigned char bridge_tunnel_header[] __aligned(2) =
251 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
252EXPORT_SYMBOL(bridge_tunnel_header);
253
254unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc) 242unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc)
255{ 243{
256 unsigned int hdrlen = 24; 244 unsigned int hdrlen = 24;
@@ -1051,169 +1039,13 @@ int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
1051 return 0; 1039 return 0;
1052} 1040}
1053 1041
1054u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, 1042/* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
1055 struct ieee802_11_elems *elems, 1043/* Ethernet-II snap header (RFC1042 for most EtherTypes) */
1056 u64 filter, u32 crc) 1044const unsigned char rfc1042_header[] __aligned(2) =
1057{ 1045 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
1058 size_t left = len; 1046EXPORT_SYMBOL(rfc1042_header);
1059 u8 *pos = start;
1060 bool calc_crc = filter != 0;
1061
1062 memset(elems, 0, sizeof(*elems));
1063 elems->ie_start = start;
1064 elems->total_len = len;
1065
1066 while (left >= 2) {
1067 u8 id, elen;
1068
1069 id = *pos++;
1070 elen = *pos++;
1071 left -= 2;
1072
1073 if (elen > left)
1074 break;
1075
1076 if (calc_crc && id < 64 && (filter & (1ULL << id)))
1077 crc = crc32_be(crc, pos - 2, elen + 2);
1078
1079 switch (id) {
1080 case WLAN_EID_SSID:
1081 elems->ssid = pos;
1082 elems->ssid_len = elen;
1083 break;
1084 case WLAN_EID_SUPP_RATES:
1085 elems->supp_rates = pos;
1086 elems->supp_rates_len = elen;
1087 break;
1088 case WLAN_EID_FH_PARAMS:
1089 elems->fh_params = pos;
1090 elems->fh_params_len = elen;
1091 break;
1092 case WLAN_EID_DS_PARAMS:
1093 elems->ds_params = pos;
1094 elems->ds_params_len = elen;
1095 break;
1096 case WLAN_EID_CF_PARAMS:
1097 elems->cf_params = pos;
1098 elems->cf_params_len = elen;
1099 break;
1100 case WLAN_EID_TIM:
1101 if (elen >= sizeof(struct ieee80211_tim_ie)) {
1102 elems->tim = (void *)pos;
1103 elems->tim_len = elen;
1104 }
1105 break;
1106 case WLAN_EID_IBSS_PARAMS:
1107 elems->ibss_params = pos;
1108 elems->ibss_params_len = elen;
1109 break;
1110 case WLAN_EID_CHALLENGE:
1111 elems->challenge = pos;
1112 elems->challenge_len = elen;
1113 break;
1114 case WLAN_EID_VENDOR_SPECIFIC:
1115 if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
1116 pos[2] == 0xf2) {
1117 /* Microsoft OUI (00:50:F2) */
1118
1119 if (calc_crc)
1120 crc = crc32_be(crc, pos - 2, elen + 2);
1121
1122 if (pos[3] == 1) {
1123 /* OUI Type 1 - WPA IE */
1124 elems->wpa = pos;
1125 elems->wpa_len = elen;
1126 } else if (elen >= 5 && pos[3] == 2) {
1127 /* OUI Type 2 - WMM IE */
1128 if (pos[4] == 0) {
1129 elems->wmm_info = pos;
1130 elems->wmm_info_len = elen;
1131 } else if (pos[4] == 1) {
1132 elems->wmm_param = pos;
1133 elems->wmm_param_len = elen;
1134 }
1135 }
1136 }
1137 break;
1138 case WLAN_EID_RSN:
1139 elems->rsn = pos;
1140 elems->rsn_len = elen;
1141 break;
1142 case WLAN_EID_ERP_INFO:
1143 elems->erp_info = pos;
1144 elems->erp_info_len = elen;
1145 break;
1146 case WLAN_EID_EXT_SUPP_RATES:
1147 elems->ext_supp_rates = pos;
1148 elems->ext_supp_rates_len = elen;
1149 break;
1150 case WLAN_EID_HT_CAPABILITY:
1151 if (elen >= sizeof(struct ieee80211_ht_cap))
1152 elems->ht_cap_elem = (void *)pos;
1153 break;
1154 case WLAN_EID_HT_INFORMATION:
1155 if (elen >= sizeof(struct ieee80211_ht_info))
1156 elems->ht_info_elem = (void *)pos;
1157 break;
1158 case WLAN_EID_MESH_ID:
1159 elems->mesh_id = pos;
1160 elems->mesh_id_len = elen;
1161 break;
1162 case WLAN_EID_MESH_CONFIG:
1163 if (elen >= sizeof(struct ieee80211_meshconf_ie))
1164 elems->mesh_config = (void *)pos;
1165 break;
1166 case WLAN_EID_PEER_MGMT:
1167 elems->peering = pos;
1168 elems->peering_len = elen;
1169 break;
1170 case WLAN_EID_PREQ:
1171 elems->preq = pos;
1172 elems->preq_len = elen;
1173 break;
1174 case WLAN_EID_PREP:
1175 elems->prep = pos;
1176 elems->prep_len = elen;
1177 break;
1178 case WLAN_EID_PERR:
1179 elems->perr = pos;
1180 elems->perr_len = elen;
1181 break;
1182 case WLAN_EID_RANN:
1183 if (elen >= sizeof(struct ieee80211_rann_ie))
1184 elems->rann = (void *)pos;
1185 break;
1186 case WLAN_EID_CHANNEL_SWITCH:
1187 elems->ch_switch_elem = pos;
1188 elems->ch_switch_elem_len = elen;
1189 break;
1190 case WLAN_EID_QUIET:
1191 if (!elems->quiet_elem) {
1192 elems->quiet_elem = pos;
1193 elems->quiet_elem_len = elen;
1194 }
1195 elems->num_of_quiet_elem++;
1196 break;
1197 case WLAN_EID_COUNTRY:
1198 elems->country_elem = pos;
1199 elems->country_elem_len = elen;
1200 break;
1201 case WLAN_EID_PWR_CONSTRAINT:
1202 elems->pwr_constr_elem = pos;
1203 elems->pwr_constr_elem_len = elen;
1204 break;
1205 case WLAN_EID_TIMEOUT_INTERVAL:
1206 elems->timeout_int = pos;
1207 elems->timeout_int_len = elen;
1208 break;
1209 default:
1210 break;
1211 }
1212
1213 left -= elen;
1214 pos += elen;
1215 }
1216 1047
1217 return crc; 1048/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
1218} 1049const unsigned char bridge_tunnel_header[] __aligned(2) =
1219EXPORT_SYMBOL(ieee802_11_parse_elems_crc); 1050 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
1051EXPORT_SYMBOL(bridge_tunnel_header);
generated by cgit v1.2.2 (git 2.25.0) at 2025-10-01 11:00:52 -0400