Diff markup
1 #include <linux/etherdevice.h> 1 #include <linux/etherdevice.h>
2 #include <net/ieee80211_crypt.h> 2 #include <net/ieee80211_crypt.h>
3 3
4 #include "hostap_80211.h" 4 #include "hostap_80211.h"
5 #include "hostap.h" 5 #include "hostap.h"
6 #include "hostap_ap.h" 6 #include "hostap_ap.h"
7 7
8 /* See IEEE 802.1H for LLC/SNAP encapsulation/ 8 /* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
9 /* Ethernet-II snap header (RFC1042 for most E 9 /* Ethernet-II snap header (RFC1042 for most EtherTypes) */
10 static unsigned char rfc1042_header[] = 10 static unsigned char rfc1042_header[] =
11 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; 11 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
12 /* Bridge-Tunnel header (for EtherTypes ETH_P_ 12 /* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
13 static unsigned char bridge_tunnel_header[] = 13 static unsigned char bridge_tunnel_header[] =
14 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 }; 14 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
15 /* No encapsulation header if EtherType < 0x60 15 /* No encapsulation header if EtherType < 0x600 (=length) */
16 16
17 void hostap_dump_rx_80211(const char *name, st 17 void hostap_dump_rx_80211(const char *name, struct sk_buff *skb,
18 struct hostap_80211_ 18 struct hostap_80211_rx_status *rx_stats)
19 { 19 {
20 struct ieee80211_hdr_4addr *hdr; 20 struct ieee80211_hdr_4addr *hdr;
21 u16 fc; 21 u16 fc;
22 DECLARE_MAC_BUF(mac); 22 DECLARE_MAC_BUF(mac);
23 23
24 hdr = (struct ieee80211_hdr_4addr *) s 24 hdr = (struct ieee80211_hdr_4addr *) skb->data;
25 25
26 printk(KERN_DEBUG "%s: RX signal=%d no 26 printk(KERN_DEBUG "%s: RX signal=%d noise=%d rate=%d len=%d "
27 "jiffies=%ld\n", 27 "jiffies=%ld\n",
28 name, rx_stats->signal, rx_stat 28 name, rx_stats->signal, rx_stats->noise, rx_stats->rate,
29 skb->len, jiffies); 29 skb->len, jiffies);
30 30
31 if (skb->len < 2) 31 if (skb->len < 2)
32 return; 32 return;
33 33
34 fc = le16_to_cpu(hdr->frame_ctl); 34 fc = le16_to_cpu(hdr->frame_ctl);
35 printk(KERN_DEBUG " FC=0x%04x (type= 35 printk(KERN_DEBUG " FC=0x%04x (type=%d:%d)%s%s",
36 fc, WLAN_FC_GET_TYPE(fc) >> 2, 36 fc, WLAN_FC_GET_TYPE(fc) >> 2, WLAN_FC_GET_STYPE(fc) >> 4,
37 fc & IEEE80211_FCTL_TODS ? " [T 37 fc & IEEE80211_FCTL_TODS ? " [ToDS]" : "",
38 fc & IEEE80211_FCTL_FROMDS ? " 38 fc & IEEE80211_FCTL_FROMDS ? " [FromDS]" : "");
39 39
40 if (skb->len < IEEE80211_DATA_HDR3_LEN 40 if (skb->len < IEEE80211_DATA_HDR3_LEN) {
41 printk("\n"); 41 printk("\n");
42 return; 42 return;
43 } 43 }
44 44
45 printk(" dur=0x%04x seq=0x%04x\n", le1 45 printk(" dur=0x%04x seq=0x%04x\n", le16_to_cpu(hdr->duration_id),
46 le16_to_cpu(hdr->seq_ctl)); 46 le16_to_cpu(hdr->seq_ctl));
47 47
48 printk(KERN_DEBUG " A1=%s", print_ma 48 printk(KERN_DEBUG " A1=%s", print_mac(mac, hdr->addr1));
49 printk(" A2=%s", print_mac(mac, hdr->a 49 printk(" A2=%s", print_mac(mac, hdr->addr2));
50 printk(" A3=%s", print_mac(mac, hdr->a 50 printk(" A3=%s", print_mac(mac, hdr->addr3));
51 if (skb->len >= 30) 51 if (skb->len >= 30)
52 printk(" A4=%s", print_mac(mac 52 printk(" A4=%s", print_mac(mac, hdr->addr4));
53 printk("\n"); 53 printk("\n");
54 } 54 }
55 55
56 56
57 /* Send RX frame to netif with 802.11 (and pos 57 /* Send RX frame to netif with 802.11 (and possible prism) header.
58 * Called from hardware or software IRQ contex 58 * Called from hardware or software IRQ context. */
59 int prism2_rx_80211(struct net_device *dev, st 59 int prism2_rx_80211(struct net_device *dev, struct sk_buff *skb,
60 struct hostap_80211_rx_sta 60 struct hostap_80211_rx_status *rx_stats, int type)
61 { 61 {
62 struct hostap_interface *iface; 62 struct hostap_interface *iface;
63 local_info_t *local; 63 local_info_t *local;
64 int hdrlen, phdrlen, head_need, tail_n 64 int hdrlen, phdrlen, head_need, tail_need;
65 u16 fc; 65 u16 fc;
66 int prism_header, ret; 66 int prism_header, ret;
67 struct ieee80211_hdr_4addr *hdr; 67 struct ieee80211_hdr_4addr *hdr;
68 68
69 iface = netdev_priv(dev); 69 iface = netdev_priv(dev);
70 local = iface->local; 70 local = iface->local;
71 dev->last_rx = jiffies; 71 dev->last_rx = jiffies;
72 72
73 if (dev->type == ARPHRD_IEEE80211_PRIS 73 if (dev->type == ARPHRD_IEEE80211_PRISM) {
74 if (local->monitor_type == PRI 74 if (local->monitor_type == PRISM2_MONITOR_PRISM) {
75 prism_header = 1; 75 prism_header = 1;
76 phdrlen = sizeof(struc 76 phdrlen = sizeof(struct linux_wlan_ng_prism_hdr);
77 } else { /* local->monitor_typ 77 } else { /* local->monitor_type == PRISM2_MONITOR_CAPHDR */
78 prism_header = 2; 78 prism_header = 2;
79 phdrlen = sizeof(struc 79 phdrlen = sizeof(struct linux_wlan_ng_cap_hdr);
80 } 80 }
81 } else { 81 } else {
82 prism_header = 0; 82 prism_header = 0;
83 phdrlen = 0; 83 phdrlen = 0;
84 } 84 }
85 85
86 hdr = (struct ieee80211_hdr_4addr *) s 86 hdr = (struct ieee80211_hdr_4addr *) skb->data;
87 fc = le16_to_cpu(hdr->frame_ctl); 87 fc = le16_to_cpu(hdr->frame_ctl);
88 88
89 if (type == PRISM2_RX_MGMT && (fc & IE 89 if (type == PRISM2_RX_MGMT && (fc & IEEE80211_FCTL_VERS)) {
90 printk(KERN_DEBUG "%s: dropped 90 printk(KERN_DEBUG "%s: dropped management frame with header "
91 "version %d\n", dev->na 91 "version %d\n", dev->name, fc & IEEE80211_FCTL_VERS);
92 dev_kfree_skb_any(skb); 92 dev_kfree_skb_any(skb);
93 return 0; 93 return 0;
94 } 94 }
95 95
96 hdrlen = hostap_80211_get_hdrlen(fc); 96 hdrlen = hostap_80211_get_hdrlen(fc);
97 97
98 /* check if there is enough room for e 98 /* check if there is enough room for extra data; if not, expand skb
99 * buffer to be large enough for the c 99 * buffer to be large enough for the changes */
100 head_need = phdrlen; 100 head_need = phdrlen;
101 tail_need = 0; 101 tail_need = 0;
102 #ifdef PRISM2_ADD_BOGUS_CRC 102 #ifdef PRISM2_ADD_BOGUS_CRC
103 tail_need += 4; 103 tail_need += 4;
104 #endif /* PRISM2_ADD_BOGUS_CRC */ 104 #endif /* PRISM2_ADD_BOGUS_CRC */
105 105
106 head_need -= skb_headroom(skb); 106 head_need -= skb_headroom(skb);
107 tail_need -= skb_tailroom(skb); 107 tail_need -= skb_tailroom(skb);
108 108
109 if (head_need > 0 || tail_need > 0) { 109 if (head_need > 0 || tail_need > 0) {
110 if (pskb_expand_head(skb, head 110 if (pskb_expand_head(skb, head_need > 0 ? head_need : 0,
111 tail_need 111 tail_need > 0 ? tail_need : 0,
112 GFP_ATOMI 112 GFP_ATOMIC)) {
113 printk(KERN_DEBUG "%s: 113 printk(KERN_DEBUG "%s: prism2_rx_80211 failed to "
114 "reallocate skb 114 "reallocate skb buffer\n", dev->name);
115 dev_kfree_skb_any(skb) 115 dev_kfree_skb_any(skb);
116 return 0; 116 return 0;
117 } 117 }
118 } 118 }
119 119
120 /* We now have an skb with enough head 120 /* We now have an skb with enough head and tail room, so just insert
121 * the extra data */ 121 * the extra data */
122 122
123 #ifdef PRISM2_ADD_BOGUS_CRC 123 #ifdef PRISM2_ADD_BOGUS_CRC
124 memset(skb_put(skb, 4), 0xff, 4); /* P 124 memset(skb_put(skb, 4), 0xff, 4); /* Prism2 strips CRC */
125 #endif /* PRISM2_ADD_BOGUS_CRC */ 125 #endif /* PRISM2_ADD_BOGUS_CRC */
126 126
127 if (prism_header == 1) { 127 if (prism_header == 1) {
128 struct linux_wlan_ng_prism_hdr 128 struct linux_wlan_ng_prism_hdr *hdr;
129 hdr = (struct linux_wlan_ng_pr 129 hdr = (struct linux_wlan_ng_prism_hdr *)
130 skb_push(skb, phdrlen) 130 skb_push(skb, phdrlen);
131 memset(hdr, 0, phdrlen); 131 memset(hdr, 0, phdrlen);
132 hdr->msgcode = LWNG_CAP_DID_BA 132 hdr->msgcode = LWNG_CAP_DID_BASE;
133 hdr->msglen = sizeof(*hdr); 133 hdr->msglen = sizeof(*hdr);
134 memcpy(hdr->devname, dev->name 134 memcpy(hdr->devname, dev->name, sizeof(hdr->devname));
135 #define LWNG_SETVAL(f,i,s,l,d) \ 135 #define LWNG_SETVAL(f,i,s,l,d) \
136 hdr->f.did = LWNG_CAP_DID_BASE | (i << 12); \ 136 hdr->f.did = LWNG_CAP_DID_BASE | (i << 12); \
137 hdr->f.status = s; hdr->f.len = l; hdr->f.data 137 hdr->f.status = s; hdr->f.len = l; hdr->f.data = d
138 LWNG_SETVAL(hosttime, 1, 0, 4, 138 LWNG_SETVAL(hosttime, 1, 0, 4, jiffies);
139 LWNG_SETVAL(mactime, 2, 0, 4, 139 LWNG_SETVAL(mactime, 2, 0, 4, rx_stats->mac_time);
140 LWNG_SETVAL(channel, 3, 1 /* n 140 LWNG_SETVAL(channel, 3, 1 /* no value */, 4, 0);
141 LWNG_SETVAL(rssi, 4, 1 /* no v 141 LWNG_SETVAL(rssi, 4, 1 /* no value */, 4, 0);
142 LWNG_SETVAL(sq, 5, 1 /* no val 142 LWNG_SETVAL(sq, 5, 1 /* no value */, 4, 0);
143 LWNG_SETVAL(signal, 6, 0, 4, r 143 LWNG_SETVAL(signal, 6, 0, 4, rx_stats->signal);
144 LWNG_SETVAL(noise, 7, 0, 4, rx 144 LWNG_SETVAL(noise, 7, 0, 4, rx_stats->noise);
145 LWNG_SETVAL(rate, 8, 0, 4, rx_ 145 LWNG_SETVAL(rate, 8, 0, 4, rx_stats->rate / 5);
146 LWNG_SETVAL(istx, 9, 0, 4, 0); 146 LWNG_SETVAL(istx, 9, 0, 4, 0);
147 LWNG_SETVAL(frmlen, 10, 0, 4, 147 LWNG_SETVAL(frmlen, 10, 0, 4, skb->len - phdrlen);
148 #undef LWNG_SETVAL 148 #undef LWNG_SETVAL
149 } else if (prism_header == 2) { 149 } else if (prism_header == 2) {
150 struct linux_wlan_ng_cap_hdr * 150 struct linux_wlan_ng_cap_hdr *hdr;
151 hdr = (struct linux_wlan_ng_ca 151 hdr = (struct linux_wlan_ng_cap_hdr *)
152 skb_push(skb, phdrlen) 152 skb_push(skb, phdrlen);
153 memset(hdr, 0, phdrlen); 153 memset(hdr, 0, phdrlen);
154 hdr->version = htonl(LWNG_C 154 hdr->version = htonl(LWNG_CAPHDR_VERSION);
155 hdr->length = htonl(phdrle 155 hdr->length = htonl(phdrlen);
156 hdr->mactime = __cpu_to_be6 156 hdr->mactime = __cpu_to_be64(rx_stats->mac_time);
157 hdr->hosttime = __cpu_to_be6 157 hdr->hosttime = __cpu_to_be64(jiffies);
158 hdr->phytype = htonl(4); /* 158 hdr->phytype = htonl(4); /* dss_dot11_b */
159 hdr->channel = htonl(local- 159 hdr->channel = htonl(local->channel);
160 hdr->datarate = htonl(rx_sta 160 hdr->datarate = htonl(rx_stats->rate);
161 hdr->antenna = htonl(0); /* 161 hdr->antenna = htonl(0); /* unknown */
162 hdr->priority = htonl(0); /* 162 hdr->priority = htonl(0); /* unknown */
163 hdr->ssi_type = htonl(3); /* 163 hdr->ssi_type = htonl(3); /* raw */
164 hdr->ssi_signal = htonl(rx_sta 164 hdr->ssi_signal = htonl(rx_stats->signal);
165 hdr->ssi_noise = htonl(rx_sta 165 hdr->ssi_noise = htonl(rx_stats->noise);
166 hdr->preamble = htonl(0); /* 166 hdr->preamble = htonl(0); /* unknown */
167 hdr->encoding = htonl(1); /* 167 hdr->encoding = htonl(1); /* cck */
168 } 168 }
169 169
170 ret = skb->len - phdrlen; 170 ret = skb->len - phdrlen;
171 skb->dev = dev; 171 skb->dev = dev;
172 skb_reset_mac_header(skb); 172 skb_reset_mac_header(skb);
173 skb_pull(skb, hdrlen); 173 skb_pull(skb, hdrlen);
174 if (prism_header) 174 if (prism_header)
175 skb_pull(skb, phdrlen); 175 skb_pull(skb, phdrlen);
176 skb->pkt_type = PACKET_OTHERHOST; 176 skb->pkt_type = PACKET_OTHERHOST;
177 skb->protocol = __constant_htons(ETH_P 177 skb->protocol = __constant_htons(ETH_P_802_2);
178 memset(skb->cb, 0, sizeof(skb->cb)); 178 memset(skb->cb, 0, sizeof(skb->cb));
179 netif_rx(skb); 179 netif_rx(skb);
180 180
181 return ret; 181 return ret;
182 } 182 }
183 183
184 184
185 /* Called only as a tasklet (software IRQ) */ 185 /* Called only as a tasklet (software IRQ) */
186 static void monitor_rx(struct net_device *dev, 186 static void monitor_rx(struct net_device *dev, struct sk_buff *skb,
187 struct hostap_80211_rx_ 187 struct hostap_80211_rx_status *rx_stats)
188 { 188 {
189 struct net_device_stats *stats; 189 struct net_device_stats *stats;
190 int len; 190 int len;
191 191
192 len = prism2_rx_80211(dev, skb, rx_sta 192 len = prism2_rx_80211(dev, skb, rx_stats, PRISM2_RX_MONITOR);
193 stats = hostap_get_stats(dev); 193 stats = hostap_get_stats(dev);
194 stats->rx_packets++; 194 stats->rx_packets++;
195 stats->rx_bytes += len; 195 stats->rx_bytes += len;
196 } 196 }
197 197
198 198
199 /* Called only as a tasklet (software IRQ) */ 199 /* Called only as a tasklet (software IRQ) */
200 static struct prism2_frag_entry * 200 static struct prism2_frag_entry *
201 prism2_frag_cache_find(local_info_t *local, un 201 prism2_frag_cache_find(local_info_t *local, unsigned int seq,
202 unsigned int frag, u8 * 202 unsigned int frag, u8 *src, u8 *dst)
203 { 203 {
204 struct prism2_frag_entry *entry; 204 struct prism2_frag_entry *entry;
205 int i; 205 int i;
206 206
207 for (i = 0; i < PRISM2_FRAG_CACHE_LEN; 207 for (i = 0; i < PRISM2_FRAG_CACHE_LEN; i++) {
208 entry = &local->frag_cache[i]; 208 entry = &local->frag_cache[i];
209 if (entry->skb != NULL && 209 if (entry->skb != NULL &&
210 time_after(jiffies, entry- 210 time_after(jiffies, entry->first_frag_time + 2 * HZ)) {
211 printk(KERN_DEBUG "%s: 211 printk(KERN_DEBUG "%s: expiring fragment cache entry "
212 "seq=%u last_fr 212 "seq=%u last_frag=%u\n",
213 local->dev->nam 213 local->dev->name, entry->seq, entry->last_frag);
214 dev_kfree_skb(entry->s 214 dev_kfree_skb(entry->skb);
215 entry->skb = NULL; 215 entry->skb = NULL;
216 } 216 }
217 217
218 if (entry->skb != NULL && entr 218 if (entry->skb != NULL && entry->seq == seq &&
219 (entry->last_frag + 1 == f 219 (entry->last_frag + 1 == frag || frag == -1) &&
220 memcmp(entry->src_addr, sr 220 memcmp(entry->src_addr, src, ETH_ALEN) == 0 &&
221 memcmp(entry->dst_addr, ds 221 memcmp(entry->dst_addr, dst, ETH_ALEN) == 0)
222 return entry; 222 return entry;
223 } 223 }
224 224
225 return NULL; 225 return NULL;
226 } 226 }
227 227
228 228
229 /* Called only as a tasklet (software IRQ) */ 229 /* Called only as a tasklet (software IRQ) */
230 static struct sk_buff * 230 static struct sk_buff *
231 prism2_frag_cache_get(local_info_t *local, str 231 prism2_frag_cache_get(local_info_t *local, struct ieee80211_hdr_4addr *hdr)
232 { 232 {
233 struct sk_buff *skb = NULL; 233 struct sk_buff *skb = NULL;
234 u16 sc; 234 u16 sc;
235 unsigned int frag, seq; 235 unsigned int frag, seq;
236 struct prism2_frag_entry *entry; 236 struct prism2_frag_entry *entry;
237 237
238 sc = le16_to_cpu(hdr->seq_ctl); 238 sc = le16_to_cpu(hdr->seq_ctl);
239 frag = WLAN_GET_SEQ_FRAG(sc); 239 frag = WLAN_GET_SEQ_FRAG(sc);
240 seq = WLAN_GET_SEQ_SEQ(sc) >> 4; 240 seq = WLAN_GET_SEQ_SEQ(sc) >> 4;
241 241
242 if (frag == 0) { 242 if (frag == 0) {
243 /* Reserve enough space to fit 243 /* Reserve enough space to fit maximum frame length */
244 skb = dev_alloc_skb(local->dev 244 skb = dev_alloc_skb(local->dev->mtu +
245 sizeof(str 245 sizeof(struct ieee80211_hdr_4addr) +
246 8 /* LLC * 246 8 /* LLC */ +
247 2 /* align 247 2 /* alignment */ +
248 8 /* WEP * 248 8 /* WEP */ + ETH_ALEN /* WDS */);
249 if (skb == NULL) 249 if (skb == NULL)
250 return NULL; 250 return NULL;
251 251
252 entry = &local->frag_cache[loc 252 entry = &local->frag_cache[local->frag_next_idx];
253 local->frag_next_idx++; 253 local->frag_next_idx++;
254 if (local->frag_next_idx >= PR 254 if (local->frag_next_idx >= PRISM2_FRAG_CACHE_LEN)
255 local->frag_next_idx = 255 local->frag_next_idx = 0;
256 256
257 if (entry->skb != NULL) 257 if (entry->skb != NULL)
258 dev_kfree_skb(entry->s 258 dev_kfree_skb(entry->skb);
259 259
260 entry->first_frag_time = jiffi 260 entry->first_frag_time = jiffies;
261 entry->seq = seq; 261 entry->seq = seq;
262 entry->last_frag = frag; 262 entry->last_frag = frag;
263 entry->skb = skb; 263 entry->skb = skb;
264 memcpy(entry->src_addr, hdr->a 264 memcpy(entry->src_addr, hdr->addr2, ETH_ALEN);
265 memcpy(entry->dst_addr, hdr->a 265 memcpy(entry->dst_addr, hdr->addr1, ETH_ALEN);
266 } else { 266 } else {
267 /* received a fragment of a fr 267 /* received a fragment of a frame for which the head fragment
268 * should have already been re 268 * should have already been received */
269 entry = prism2_frag_cache_find 269 entry = prism2_frag_cache_find(local, seq, frag, hdr->addr2,
270 270 hdr->addr1);
271 if (entry != NULL) { 271 if (entry != NULL) {
272 entry->last_frag = fra 272 entry->last_frag = frag;
273 skb = entry->skb; 273 skb = entry->skb;
274 } 274 }
275 } 275 }
276 276
277 return skb; 277 return skb;
278 } 278 }
279 279
280 280
281 /* Called only as a tasklet (software IRQ) */ 281 /* Called only as a tasklet (software IRQ) */
282 static int prism2_frag_cache_invalidate(local_ 282 static int prism2_frag_cache_invalidate(local_info_t *local,
283 struct 283 struct ieee80211_hdr_4addr *hdr)
284 { 284 {
285 u16 sc; 285 u16 sc;
286 unsigned int seq; 286 unsigned int seq;
287 struct prism2_frag_entry *entry; 287 struct prism2_frag_entry *entry;
288 288
289 sc = le16_to_cpu(hdr->seq_ctl); 289 sc = le16_to_cpu(hdr->seq_ctl);
290 seq = WLAN_GET_SEQ_SEQ(sc) >> 4; 290 seq = WLAN_GET_SEQ_SEQ(sc) >> 4;
291 291
292 entry = prism2_frag_cache_find(local, 292 entry = prism2_frag_cache_find(local, seq, -1, hdr->addr2, hdr->addr1);
293 293
294 if (entry == NULL) { 294 if (entry == NULL) {
295 printk(KERN_DEBUG "%s: could n 295 printk(KERN_DEBUG "%s: could not invalidate fragment cache "
296 "entry (seq=%u)\n", 296 "entry (seq=%u)\n",
297 local->dev->name, seq); 297 local->dev->name, seq);
298 return -1; 298 return -1;
299 } 299 }
300 300
301 entry->skb = NULL; 301 entry->skb = NULL;
302 return 0; 302 return 0;
303 } 303 }
304 304
305 305
306 static struct hostap_bss_info *__hostap_get_bs 306 static struct hostap_bss_info *__hostap_get_bss(local_info_t *local, u8 *bssid,
307 307 u8 *ssid, size_t ssid_len)
308 { 308 {
309 struct list_head *ptr; 309 struct list_head *ptr;
310 struct hostap_bss_info *bss; 310 struct hostap_bss_info *bss;
311 311
312 list_for_each(ptr, &local->bss_list) { 312 list_for_each(ptr, &local->bss_list) {
313 bss = list_entry(ptr, struct h 313 bss = list_entry(ptr, struct hostap_bss_info, list);
314 if (memcmp(bss->bssid, bssid, 314 if (memcmp(bss->bssid, bssid, ETH_ALEN) == 0 &&
315 (ssid == NULL || 315 (ssid == NULL ||
316 (ssid_len == bss->ssid_le 316 (ssid_len == bss->ssid_len &&
317 memcmp(ssid, bss->ssid, 317 memcmp(ssid, bss->ssid, ssid_len) == 0))) {
318 list_move(&bss->list, 318 list_move(&bss->list, &local->bss_list);
319 return bss; 319 return bss;
320 } 320 }
321 } 321 }
322 322
323 return NULL; 323 return NULL;
324 } 324 }
325 325
326 326
327 static struct hostap_bss_info *__hostap_add_bs 327 static struct hostap_bss_info *__hostap_add_bss(local_info_t *local, u8 *bssid,
328 328 u8 *ssid, size_t ssid_len)
329 { 329 {
330 struct hostap_bss_info *bss; 330 struct hostap_bss_info *bss;
331 331
332 if (local->num_bss_info >= HOSTAP_MAX_ 332 if (local->num_bss_info >= HOSTAP_MAX_BSS_COUNT) {
333 bss = list_entry(local->bss_li 333 bss = list_entry(local->bss_list.prev,
334 struct hostap 334 struct hostap_bss_info, list);
335 list_del(&bss->list); 335 list_del(&bss->list);
336 local->num_bss_info--; 336 local->num_bss_info--;
337 } else { 337 } else {
338 bss = (struct hostap_bss_info 338 bss = (struct hostap_bss_info *)
339 kmalloc(sizeof(*bss), 339 kmalloc(sizeof(*bss), GFP_ATOMIC);
340 if (bss == NULL) 340 if (bss == NULL)
341 return NULL; 341 return NULL;
342 } 342 }
343 343
344 memset(bss, 0, sizeof(*bss)); 344 memset(bss, 0, sizeof(*bss));
345 memcpy(bss->bssid, bssid, ETH_ALEN); 345 memcpy(bss->bssid, bssid, ETH_ALEN);
346 memcpy(bss->ssid, ssid, ssid_len); 346 memcpy(bss->ssid, ssid, ssid_len);
347 bss->ssid_len = ssid_len; 347 bss->ssid_len = ssid_len;
348 local->num_bss_info++; 348 local->num_bss_info++;
349 list_add(&bss->list, &local->bss_list) 349 list_add(&bss->list, &local->bss_list);
350 return bss; 350 return bss;
351 } 351 }
352 352
353 353
354 static void __hostap_expire_bss(local_info_t * 354 static void __hostap_expire_bss(local_info_t *local)
355 { 355 {
356 struct hostap_bss_info *bss; 356 struct hostap_bss_info *bss;
357 357
358 while (local->num_bss_info > 0) { 358 while (local->num_bss_info > 0) {
359 bss = list_entry(local->bss_li 359 bss = list_entry(local->bss_list.prev,
360 struct hostap 360 struct hostap_bss_info, list);
361 if (!time_after(jiffies, bss-> 361 if (!time_after(jiffies, bss->last_update + 60 * HZ))
362 break; 362 break;
363 363
364 list_del(&bss->list); 364 list_del(&bss->list);
365 local->num_bss_info--; 365 local->num_bss_info--;
366 kfree(bss); 366 kfree(bss);
367 } 367 }
368 } 368 }
369 369
370 370
371 /* Both IEEE 802.11 Beacon and Probe Response 371 /* Both IEEE 802.11 Beacon and Probe Response frames have similar structure, so
372 * the same routine can be used to parse both 372 * the same routine can be used to parse both of them. */
373 static void hostap_rx_sta_beacon(local_info_t 373 static void hostap_rx_sta_beacon(local_info_t *local, struct sk_buff *skb,
374 int stype) 374 int stype)
375 { 375 {
376 struct hostap_ieee80211_mgmt *mgmt; 376 struct hostap_ieee80211_mgmt *mgmt;
377 int left, chan = 0; 377 int left, chan = 0;
378 u8 *pos; 378 u8 *pos;
379 u8 *ssid = NULL, *wpa = NULL, *rsn = N 379 u8 *ssid = NULL, *wpa = NULL, *rsn = NULL;
380 size_t ssid_len = 0, wpa_len = 0, rsn_ 380 size_t ssid_len = 0, wpa_len = 0, rsn_len = 0;
381 struct hostap_bss_info *bss; 381 struct hostap_bss_info *bss;
382 382
383 if (skb->len < IEEE80211_MGMT_HDR_LEN 383 if (skb->len < IEEE80211_MGMT_HDR_LEN + sizeof(mgmt->u.beacon))
384 return; 384 return;
385 385
386 mgmt = (struct hostap_ieee80211_mgmt * 386 mgmt = (struct hostap_ieee80211_mgmt *) skb->data;
387 pos = mgmt->u.beacon.variable; 387 pos = mgmt->u.beacon.variable;
388 left = skb->len - (pos - skb->data); 388 left = skb->len - (pos - skb->data);
389 389
390 while (left >= 2) { 390 while (left >= 2) {
391 if (2 + pos[1] > left) 391 if (2 + pos[1] > left)
392 return; /* parse faile 392 return; /* parse failed */
393 switch (*pos) { 393 switch (*pos) {
394 case WLAN_EID_SSID: 394 case WLAN_EID_SSID:
395 ssid = pos + 2; 395 ssid = pos + 2;
396 ssid_len = pos[1]; 396 ssid_len = pos[1];
397 break; 397 break;
398 case WLAN_EID_GENERIC: 398 case WLAN_EID_GENERIC:
399 if (pos[1] >= 4 && 399 if (pos[1] >= 4 &&
400 pos[2] == 0x00 && 400 pos[2] == 0x00 && pos[3] == 0x50 &&
401 pos[4] == 0xf2 && 401 pos[4] == 0xf2 && pos[5] == 1) {
402 wpa = pos; 402 wpa = pos;
403 wpa_len = pos[ 403 wpa_len = pos[1] + 2;
404 } 404 }
405 break; 405 break;
406 case WLAN_EID_RSN: 406 case WLAN_EID_RSN:
407 rsn = pos; 407 rsn = pos;
408 rsn_len = pos[1] + 2; 408 rsn_len = pos[1] + 2;
409 break; 409 break;
410 case WLAN_EID_DS_PARAMS: 410 case WLAN_EID_DS_PARAMS:
411 if (pos[1] >= 1) 411 if (pos[1] >= 1)
412 chan = pos[2]; 412 chan = pos[2];
413 break; 413 break;
414 } 414 }
415 left -= 2 + pos[1]; 415 left -= 2 + pos[1];
416 pos += 2 + pos[1]; 416 pos += 2 + pos[1];
417 } 417 }
418 418
419 if (wpa_len > MAX_WPA_IE_LEN) 419 if (wpa_len > MAX_WPA_IE_LEN)
420 wpa_len = MAX_WPA_IE_LEN; 420 wpa_len = MAX_WPA_IE_LEN;
421 if (rsn_len > MAX_WPA_IE_LEN) 421 if (rsn_len > MAX_WPA_IE_LEN)
422 rsn_len = MAX_WPA_IE_LEN; 422 rsn_len = MAX_WPA_IE_LEN;
423 if (ssid_len > sizeof(bss->ssid)) 423 if (ssid_len > sizeof(bss->ssid))
424 ssid_len = sizeof(bss->ssid); 424 ssid_len = sizeof(bss->ssid);
425 425
426 spin_lock(&local->lock); 426 spin_lock(&local->lock);
427 bss = __hostap_get_bss(local, mgmt->bs 427 bss = __hostap_get_bss(local, mgmt->bssid, ssid, ssid_len);
428 if (bss == NULL) 428 if (bss == NULL)
429 bss = __hostap_add_bss(local, 429 bss = __hostap_add_bss(local, mgmt->bssid, ssid, ssid_len);
430 if (bss) { 430 if (bss) {
431 bss->last_update = jiffies; 431 bss->last_update = jiffies;
432 bss->count++; 432 bss->count++;
433 bss->capab_info = le16_to_cpu( 433 bss->capab_info = le16_to_cpu(mgmt->u.beacon.capab_info);
434 if (wpa) { 434 if (wpa) {
435 memcpy(bss->wpa_ie, wp 435 memcpy(bss->wpa_ie, wpa, wpa_len);
436 bss->wpa_ie_len = wpa_ 436 bss->wpa_ie_len = wpa_len;
437 } else 437 } else
438 bss->wpa_ie_len = 0; 438 bss->wpa_ie_len = 0;
439 if (rsn) { 439 if (rsn) {
440 memcpy(bss->rsn_ie, rs 440 memcpy(bss->rsn_ie, rsn, rsn_len);
441 bss->rsn_ie_len = rsn_ 441 bss->rsn_ie_len = rsn_len;
442 } else 442 } else
443 bss->rsn_ie_len = 0; 443 bss->rsn_ie_len = 0;
444 bss->chan = chan; 444 bss->chan = chan;
445 } 445 }
446 __hostap_expire_bss(local); 446 __hostap_expire_bss(local);
447 spin_unlock(&local->lock); 447 spin_unlock(&local->lock);
448 } 448 }
449 449
450 450
451 static int 451 static int
452 hostap_rx_frame_mgmt(local_info_t *local, stru 452 hostap_rx_frame_mgmt(local_info_t *local, struct sk_buff *skb,
453 struct hostap_80211_rx_st 453 struct hostap_80211_rx_status *rx_stats, u16 type,
454 u16 stype) 454 u16 stype)
455 { 455 {
456 if (local->iw_mode == IW_MODE_MASTER) 456 if (local->iw_mode == IW_MODE_MASTER) {
457 hostap_update_sta_ps(local, (s 457 hostap_update_sta_ps(local, (struct ieee80211_hdr_4addr *)
458 skb->data 458 skb->data);
459 } 459 }
460 460
461 if (local->hostapd && type == IEEE8021 461 if (local->hostapd && type == IEEE80211_FTYPE_MGMT) {
462 if (stype == IEEE80211_STYPE_B 462 if (stype == IEEE80211_STYPE_BEACON &&
463 local->iw_mode == IW_MODE_ 463 local->iw_mode == IW_MODE_MASTER) {
464 struct sk_buff *skb2; 464 struct sk_buff *skb2;
465 /* Process beacon fram 465 /* Process beacon frames also in kernel driver to
466 * update STA(AP) tabl 466 * update STA(AP) table statistics */
467 skb2 = skb_clone(skb, 467 skb2 = skb_clone(skb, GFP_ATOMIC);
468 if (skb2) 468 if (skb2)
469 hostap_rx(skb2 469 hostap_rx(skb2->dev, skb2, rx_stats);
470 } 470 }
471 471
472 /* send management frames to t 472 /* send management frames to the user space daemon for
473 * processing */ 473 * processing */
474 local->apdevstats.rx_packets++ 474 local->apdevstats.rx_packets++;
475 local->apdevstats.rx_bytes += 475 local->apdevstats.rx_bytes += skb->len;
476 if (local->apdev == NULL) 476 if (local->apdev == NULL)
477 return -1; 477 return -1;
478 prism2_rx_80211(local->apdev, 478 prism2_rx_80211(local->apdev, skb, rx_stats, PRISM2_RX_MGMT);
479 return 0; 479 return 0;
480 } 480 }
481 481
482 if (local->iw_mode == IW_MODE_MASTER) 482 if (local->iw_mode == IW_MODE_MASTER) {
483 if (type != IEEE80211_FTYPE_MG 483 if (type != IEEE80211_FTYPE_MGMT &&
484 type != IEEE80211_FTYPE_CT 484 type != IEEE80211_FTYPE_CTL) {
485 printk(KERN_DEBUG "%s: 485 printk(KERN_DEBUG "%s: unknown management frame "
486 "(type=0x%02x, 486 "(type=0x%02x, stype=0x%02x) dropped\n",
487 skb->dev->name, 487 skb->dev->name, type >> 2, stype >> 4);
488 return -1; 488 return -1;
489 } 489 }
490 490
491 hostap_rx(skb->dev, skb, rx_st 491 hostap_rx(skb->dev, skb, rx_stats);
492 return 0; 492 return 0;
493 } else if (type == IEEE80211_FTYPE_MGM 493 } else if (type == IEEE80211_FTYPE_MGMT &&
494 (stype == IEEE80211_STYPE_B 494 (stype == IEEE80211_STYPE_BEACON ||
495 stype == IEEE80211_STYPE_P 495 stype == IEEE80211_STYPE_PROBE_RESP)) {
496 hostap_rx_sta_beacon(local, sk 496 hostap_rx_sta_beacon(local, skb, stype);
497 return -1; 497 return -1;
498 } else if (type == IEEE80211_FTYPE_MGM 498 } else if (type == IEEE80211_FTYPE_MGMT &&
499 (stype == IEEE80211_STYPE_A 499 (stype == IEEE80211_STYPE_ASSOC_RESP ||
500 stype == IEEE80211_STYPE_R 500 stype == IEEE80211_STYPE_REASSOC_RESP)) {
501 /* Ignore (Re)AssocResp silent 501 /* Ignore (Re)AssocResp silently since these are not currently
502 * needed but are still receiv 502 * needed but are still received when WPA/RSN mode is enabled.
503 */ 503 */
504 return -1; 504 return -1;
505 } else { 505 } else {
506 printk(KERN_DEBUG "%s: hostap_ 506 printk(KERN_DEBUG "%s: hostap_rx_frame_mgmt: dropped unhandled"
507 " management frame in n 507 " management frame in non-Host AP mode (type=%d:%d)\n",
508 skb->dev->name, type >> 508 skb->dev->name, type >> 2, stype >> 4);
509 return -1; 509 return -1;
510 } 510 }
511 } 511 }
512 512
513 513
514 /* Called only as a tasklet (software IRQ) */ 514 /* Called only as a tasklet (software IRQ) */
515 static struct net_device *prism2_rx_get_wds(lo 515 static struct net_device *prism2_rx_get_wds(local_info_t *local,
516 516 u8 *addr)
517 { 517 {
518 struct hostap_interface *iface = NULL; 518 struct hostap_interface *iface = NULL;
519 struct list_head *ptr; 519 struct list_head *ptr;
520 520
521 read_lock_bh(&local->iface_lock); 521 read_lock_bh(&local->iface_lock);
522 list_for_each(ptr, &local->hostap_inte 522 list_for_each(ptr, &local->hostap_interfaces) {
523 iface = list_entry(ptr, struct 523 iface = list_entry(ptr, struct hostap_interface, list);
524 if (iface->type == HOSTAP_INTE 524 if (iface->type == HOSTAP_INTERFACE_WDS &&
525 memcmp(iface->u.wds.remote 525 memcmp(iface->u.wds.remote_addr, addr, ETH_ALEN) == 0)
526 break; 526 break;
527 iface = NULL; 527 iface = NULL;
528 } 528 }
529 read_unlock_bh(&local->iface_lock); 529 read_unlock_bh(&local->iface_lock);
530 530
531 return iface ? iface->dev : NULL; 531 return iface ? iface->dev : NULL;
532 } 532 }
533 533
534 534
535 static int 535 static int
536 hostap_rx_frame_wds(local_info_t *local, struc 536 hostap_rx_frame_wds(local_info_t *local, struct ieee80211_hdr_4addr *hdr,
537 u16 fc, struct net_device 537 u16 fc, struct net_device **wds)
538 { 538 {
539 DECLARE_MAC_BUF(mac); 539 DECLARE_MAC_BUF(mac);
540 /* FIX: is this really supposed to acc 540 /* FIX: is this really supposed to accept WDS frames only in Master
541 * mode? What about Repeater or Manage 541 * mode? What about Repeater or Managed with WDS frames? */
542 if ((fc & (IEEE80211_FCTL_TODS | IEEE8 542 if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) !=
543 (IEEE80211_FCTL_TODS | IEEE80211_F 543 (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS) &&
544 (local->iw_mode != IW_MODE_MASTER 544 (local->iw_mode != IW_MODE_MASTER || !(fc & IEEE80211_FCTL_TODS)))
545 return 0; /* not a WDS frame * 545 return 0; /* not a WDS frame */
546 546
547 /* Possible WDS frame: either IEEE 802 547 /* Possible WDS frame: either IEEE 802.11 compliant (if FromDS)
548 * or own non-standard frame with 4th 548 * or own non-standard frame with 4th address after payload */
549 if (memcmp(hdr->addr1, local->dev->dev 549 if (memcmp(hdr->addr1, local->dev->dev_addr, ETH_ALEN) != 0 &&
550 (hdr->addr1[0] != 0xff || hdr->add 550 (hdr->addr1[0] != 0xff || hdr->addr1[1] != 0xff ||
551 hdr->addr1[2] != 0xff || hdr->add 551 hdr->addr1[2] != 0xff || hdr->addr1[3] != 0xff ||
552 hdr->addr1[4] != 0xff || hdr->add 552 hdr->addr1[4] != 0xff || hdr->addr1[5] != 0xff)) {
553 /* RA (or BSSID) is not ours - 553 /* RA (or BSSID) is not ours - drop */
554 PDEBUG(DEBUG_EXTRA, "%s: recei 554 PDEBUG(DEBUG_EXTRA, "%s: received WDS frame with "
555 "not own or broadcast % 555 "not own or broadcast %s=%s\n",
556 local->dev->name, 556 local->dev->name,
557 fc & IEEE80211_FCTL_FRO 557 fc & IEEE80211_FCTL_FROMDS ? "RA" : "BSSID",
558 print_mac(mac, hdr->add 558 print_mac(mac, hdr->addr1));
559 return -1; 559 return -1;
560 } 560 }
561 561
562 /* check if the frame came from a regi 562 /* check if the frame came from a registered WDS connection */
563 *wds = prism2_rx_get_wds(local, hdr->a 563 *wds = prism2_rx_get_wds(local, hdr->addr2);
564 if (*wds == NULL && fc & IEEE80211_FCT 564 if (*wds == NULL && fc & IEEE80211_FCTL_FROMDS &&
565 (local->iw_mode != IW_MODE_INFRA | 565 (local->iw_mode != IW_MODE_INFRA ||
566 !(local->wds_type & HOSTAP_WDS_AP 566 !(local->wds_type & HOSTAP_WDS_AP_CLIENT) ||
567 memcmp(hdr->addr2, local->bssid, 567 memcmp(hdr->addr2, local->bssid, ETH_ALEN) != 0)) {
568 /* require that WDS link has b 568 /* require that WDS link has been registered with TA or the
569 * frame is from current AP wh 569 * frame is from current AP when using 'AP client mode' */
570 PDEBUG(DEBUG_EXTRA, "%s: recei 570 PDEBUG(DEBUG_EXTRA, "%s: received WDS[4 addr] frame "
571 "from unknown TA=%s\n", 571 "from unknown TA=%s\n",
572 local->dev->name, print 572 local->dev->name, print_mac(mac, hdr->addr2));
573 if (local->ap && local->ap->au 573 if (local->ap && local->ap->autom_ap_wds)
574 hostap_wds_link_oper(l 574 hostap_wds_link_oper(local, hdr->addr2, WDS_ADD);
575 return -1; 575 return -1;
576 } 576 }
577 577
578 if (*wds && !(fc & IEEE80211_FCTL_FROM 578 if (*wds && !(fc & IEEE80211_FCTL_FROMDS) && local->ap &&
579 hostap_is_sta_assoc(local->ap, hdr 579 hostap_is_sta_assoc(local->ap, hdr->addr2)) {
580 /* STA is actually associated 580 /* STA is actually associated with us even though it has a
581 * registered WDS link. Assume 581 * registered WDS link. Assume it is in 'AP client' mode.
582 * Since this is a 3-addr fram 582 * Since this is a 3-addr frame, assume it is not (bogus) WDS
583 * frame and process it like a 583 * frame and process it like any normal ToDS frame from
584 * associated STA. */ 584 * associated STA. */
585 *wds = NULL; 585 *wds = NULL;
586 } 586 }
587 587
588 return 0; 588 return 0;
589 } 589 }
590 590
591 591
592 static int hostap_is_eapol_frame(local_info_t 592 static int hostap_is_eapol_frame(local_info_t *local, struct sk_buff *skb)
593 { 593 {
594 struct net_device *dev = local->dev; 594 struct net_device *dev = local->dev;
595 u16 fc, ethertype; 595 u16 fc, ethertype;
596 struct ieee80211_hdr_4addr *hdr; 596 struct ieee80211_hdr_4addr *hdr;
597 u8 *pos; 597 u8 *pos;
598 598
599 if (skb->len < 24) 599 if (skb->len < 24)
600 return 0; 600 return 0;
601 601
602 hdr = (struct ieee80211_hdr_4addr *) s 602 hdr = (struct ieee80211_hdr_4addr *) skb->data;
603 fc = le16_to_cpu(hdr->frame_ctl); 603 fc = le16_to_cpu(hdr->frame_ctl);
604 604
605 /* check that the frame is unicast fra 605 /* check that the frame is unicast frame to us */
606 if ((fc & (IEEE80211_FCTL_TODS | IEEE8 606 if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
607 IEEE80211_FCTL_TODS && 607 IEEE80211_FCTL_TODS &&
608 memcmp(hdr->addr1, dev->dev_addr, 608 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0 &&
609 memcmp(hdr->addr3, dev->dev_addr, 609 memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) {
610 /* ToDS frame with own addr BS 610 /* ToDS frame with own addr BSSID and DA */
611 } else if ((fc & (IEEE80211_FCTL_TODS 611 } else if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
612 IEEE80211_FCTL_FROMDS && 612 IEEE80211_FCTL_FROMDS &&
613 memcmp(hdr->addr1, dev->dev 613 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) {
614 /* FromDS frame with own addr 614 /* FromDS frame with own addr as DA */
615 } else 615 } else
616 return 0; 616 return 0;
617 617
618 if (skb->len < 24 + 8) 618 if (skb->len < 24 + 8)
619 return 0; 619 return 0;
620 620
621 /* check for port access entity Ethern 621 /* check for port access entity Ethernet type */
622 pos = skb->data + 24; 622 pos = skb->data + 24;
623 ethertype = (pos[6] << 8) | pos[7]; 623 ethertype = (pos[6] << 8) | pos[7];
624 if (ethertype == ETH_P_PAE) 624 if (ethertype == ETH_P_PAE)
625 return 1; 625 return 1;
626 626
627 return 0; 627 return 0;
628 } 628 }
629 629
630 630
631 /* Called only as a tasklet (software IRQ) */ 631 /* Called only as a tasklet (software IRQ) */
632 static int 632 static int
633 hostap_rx_frame_decrypt(local_info_t *local, s 633 hostap_rx_frame_decrypt(local_info_t *local, struct sk_buff *skb,
634 struct ieee80211_crypt 634 struct ieee80211_crypt_data *crypt)
635 { 635 {
636 struct ieee80211_hdr_4addr *hdr; 636 struct ieee80211_hdr_4addr *hdr;
637 int res, hdrlen; 637 int res, hdrlen;
638 638
639 if (crypt == NULL || crypt->ops->decry 639 if (crypt == NULL || crypt->ops->decrypt_mpdu == NULL)
640 return 0; 640 return 0;
641 641
642 hdr = (struct ieee80211_hdr_4addr *) s 642 hdr = (struct ieee80211_hdr_4addr *) skb->data;
643 hdrlen = hostap_80211_get_hdrlen(le16_ 643 hdrlen = hostap_80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
644 644
645 if (local->tkip_countermeasures && 645 if (local->tkip_countermeasures &&
646 strcmp(crypt->ops->name, "TKIP") = 646 strcmp(crypt->ops->name, "TKIP") == 0) {
647 if (net_ratelimit()) { 647 if (net_ratelimit()) {
648 printk(KERN_DEBUG "%s: 648 printk(KERN_DEBUG "%s: TKIP countermeasures: dropped "
649 "received packe 649 "received packet from " MAC_FMT "\n",
650 local->dev->nam 650 local->dev->name,
651 hdr->addr2[0], 651 hdr->addr2[0], hdr->addr2[1], hdr->addr2[2],
652 hdr->addr2[3], 652 hdr->addr2[3], hdr->addr2[4], hdr->addr2[5]);
653 } 653 }
654 return -1; 654 return -1;
655 } 655 }
656 656
657 atomic_inc(&crypt->refcnt); 657 atomic_inc(&crypt->refcnt);
658 res = crypt->ops->decrypt_mpdu(skb, hd 658 res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv);
659 atomic_dec(&crypt->refcnt); 659 atomic_dec(&crypt->refcnt);
660 if (res < 0) { 660 if (res < 0) {
661 printk(KERN_DEBUG "%s: decrypt 661 printk(KERN_DEBUG "%s: decryption failed (SA=" MAC_FMT
662 ") res=%d\n", 662 ") res=%d\n",
663 local->dev->name, 663 local->dev->name,
664 hdr->addr2[0], hdr->add 664 hdr->addr2[0], hdr->addr2[1], hdr->addr2[2],
665 hdr->addr2[3], hdr->add 665 hdr->addr2[3], hdr->addr2[4], hdr->addr2[5],
666 res); 666 res);
667 local->comm_tallies.rx_discard 667 local->comm_tallies.rx_discards_wep_undecryptable++;
668 return -1; 668 return -1;
669 } 669 }
670 670
671 return res; 671 return res;
672 } 672 }
673 673
674 674
675 /* Called only as a tasklet (software IRQ) */ 675 /* Called only as a tasklet (software IRQ) */
676 static int 676 static int
677 hostap_rx_frame_decrypt_msdu(local_info_t *loc 677 hostap_rx_frame_decrypt_msdu(local_info_t *local, struct sk_buff *skb,
678 int keyidx, struc 678 int keyidx, struct ieee80211_crypt_data *crypt)
679 { 679 {
680 struct ieee80211_hdr_4addr *hdr; 680 struct ieee80211_hdr_4addr *hdr;
681 int res, hdrlen; 681 int res, hdrlen;
682 DECLARE_MAC_BUF(mac); 682 DECLARE_MAC_BUF(mac);
683 683
684 if (crypt == NULL || crypt->ops->decry 684 if (crypt == NULL || crypt->ops->decrypt_msdu == NULL)
685 return 0; 685 return 0;
686 686
687 hdr = (struct ieee80211_hdr_4addr *) s 687 hdr = (struct ieee80211_hdr_4addr *) skb->data;
688 hdrlen = hostap_80211_get_hdrlen(le16_ 688 hdrlen = hostap_80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
689 689
690 atomic_inc(&crypt->refcnt); 690 atomic_inc(&crypt->refcnt);
691 res = crypt->ops->decrypt_msdu(skb, ke 691 res = crypt->ops->decrypt_msdu(skb, keyidx, hdrlen, crypt->priv);
692 atomic_dec(&crypt->refcnt); 692 atomic_dec(&crypt->refcnt);
693 if (res < 0) { 693 if (res < 0) {
694 printk(KERN_DEBUG "%s: MSDU de 694 printk(KERN_DEBUG "%s: MSDU decryption/MIC verification failed"
695 " (SA=%s keyidx=%d)\n", 695 " (SA=%s keyidx=%d)\n",
696 local->dev->name, print 696 local->dev->name, print_mac(mac, hdr->addr2), keyidx);
697 return -1; 697 return -1;
698 } 698 }
699 699
700 return 0; 700 return 0;
701 } 701 }
702 702
703 703
704 /* All received frames are sent to this functi 704 /* All received frames are sent to this function. @skb contains the frame in
705 * IEEE 802.11 format, i.e., in the format it 705 * IEEE 802.11 format, i.e., in the format it was sent over air.
706 * This function is called only as a tasklet ( 706 * This function is called only as a tasklet (software IRQ). */
707 void hostap_80211_rx(struct net_device *dev, s 707 void hostap_80211_rx(struct net_device *dev, struct sk_buff *skb,
708 struct hostap_80211_rx_st 708 struct hostap_80211_rx_status *rx_stats)
709 { 709 {
710 struct hostap_interface *iface; 710 struct hostap_interface *iface;
711 local_info_t *local; 711 local_info_t *local;
712 struct ieee80211_hdr_4addr *hdr; 712 struct ieee80211_hdr_4addr *hdr;
713 size_t hdrlen; 713 size_t hdrlen;
714 u16 fc, type, stype, sc; 714 u16 fc, type, stype, sc;
715 struct net_device *wds = NULL; 715 struct net_device *wds = NULL;
716 struct net_device_stats *stats; 716 struct net_device_stats *stats;
717 unsigned int frag; 717 unsigned int frag;
718 u8 *payload; 718 u8 *payload;
719 struct sk_buff *skb2 = NULL; 719 struct sk_buff *skb2 = NULL;
720 u16 ethertype; 720 u16 ethertype;
721 int frame_authorized = 0; 721 int frame_authorized = 0;
722 int from_assoc_ap = 0; 722 int from_assoc_ap = 0;
723 u8 dst[ETH_ALEN]; 723 u8 dst[ETH_ALEN];
724 u8 src[ETH_ALEN]; 724 u8 src[ETH_ALEN];
725 struct ieee80211_crypt_data *crypt = N 725 struct ieee80211_crypt_data *crypt = NULL;
726 void *sta = NULL; 726 void *sta = NULL;
727 int keyidx = 0; 727 int keyidx = 0;
728 728
729 iface = netdev_priv(dev); 729 iface = netdev_priv(dev);
730 local = iface->local; 730 local = iface->local;
731 iface->stats.rx_packets++; 731 iface->stats.rx_packets++;
732 iface->stats.rx_bytes += skb->len; 732 iface->stats.rx_bytes += skb->len;
733 733
734 /* dev is the master radio device; cha 734 /* dev is the master radio device; change this to be the default
735 * virtual interface (this may be chan 735 * virtual interface (this may be changed to WDS device below) */
736 dev = local->ddev; 736 dev = local->ddev;
737 iface = netdev_priv(dev); 737 iface = netdev_priv(dev);
738 738
739 hdr = (struct ieee80211_hdr_4addr *) s 739 hdr = (struct ieee80211_hdr_4addr *) skb->data;
740 stats = hostap_get_stats(dev); 740 stats = hostap_get_stats(dev);
741 741
742 if (skb->len < 10) 742 if (skb->len < 10)
743 goto rx_dropped; 743 goto rx_dropped;
744 744
745 fc = le16_to_cpu(hdr->frame_ctl); 745 fc = le16_to_cpu(hdr->frame_ctl);
746 type = WLAN_FC_GET_TYPE(fc); 746 type = WLAN_FC_GET_TYPE(fc);
747 stype = WLAN_FC_GET_STYPE(fc); 747 stype = WLAN_FC_GET_STYPE(fc);
748 sc = le16_to_cpu(hdr->seq_ctl); 748 sc = le16_to_cpu(hdr->seq_ctl);
749 frag = WLAN_GET_SEQ_FRAG(sc); 749 frag = WLAN_GET_SEQ_FRAG(sc);
750 hdrlen = hostap_80211_get_hdrlen(fc); 750 hdrlen = hostap_80211_get_hdrlen(fc);
751 751
752 /* Put this code here so that we avoid 752 /* Put this code here so that we avoid duplicating it in all
753 * Rx paths. - Jean II */ 753 * Rx paths. - Jean II */
754 #ifdef IW_WIRELESS_SPY /* defined in 754 #ifdef IW_WIRELESS_SPY /* defined in iw_handler.h */
755 /* If spy monitoring on */ 755 /* If spy monitoring on */
756 if (iface->spy_data.spy_number > 0) { 756 if (iface->spy_data.spy_number > 0) {
757 struct iw_quality wstats; 757 struct iw_quality wstats;
758 wstats.level = rx_stats->signa 758 wstats.level = rx_stats->signal;
759 wstats.noise = rx_stats->noise 759 wstats.noise = rx_stats->noise;
760 wstats.updated = IW_QUAL_LEVEL 760 wstats.updated = IW_QUAL_LEVEL_UPDATED | IW_QUAL_NOISE_UPDATED
761 | IW_QUAL_QUAL_INVALID 761 | IW_QUAL_QUAL_INVALID | IW_QUAL_DBM;
762 /* Update spy records */ 762 /* Update spy records */
763 wireless_spy_update(dev, hdr-> 763 wireless_spy_update(dev, hdr->addr2, &wstats);
764 } 764 }
765 #endif /* IW_WIRELESS_SPY */ 765 #endif /* IW_WIRELESS_SPY */
766 hostap_update_rx_stats(local->ap, hdr, 766 hostap_update_rx_stats(local->ap, hdr, rx_stats);
767 767
768 if (local->iw_mode == IW_MODE_MONITOR) 768 if (local->iw_mode == IW_MODE_MONITOR) {
769 monitor_rx(dev, skb, rx_stats) 769 monitor_rx(dev, skb, rx_stats);
770 return; 770 return;
771 } 771 }
772 772
773 if (local->host_decrypt) { 773 if (local->host_decrypt) {
774 int idx = 0; 774 int idx = 0;
775 if (skb->len >= hdrlen + 3) 775 if (skb->len >= hdrlen + 3)
776 idx = skb->data[hdrlen 776 idx = skb->data[hdrlen + 3] >> 6;
777 crypt = local->crypt[idx]; 777 crypt = local->crypt[idx];
778 sta = NULL; 778 sta = NULL;
779 779
780 /* Use station specific key to 780 /* Use station specific key to override default keys if the
781 * receiver address is a unica 781 * receiver address is a unicast address ("individual RA"). If
782 * bcrx_sta_key parameter is s 782 * bcrx_sta_key parameter is set, station specific key is used
783 * even with broad/multicast t 783 * even with broad/multicast targets (this is against IEEE
784 * 802.11, but makes it easier 784 * 802.11, but makes it easier to use different keys with
785 * stations that do not suppor 785 * stations that do not support WEP key mapping). */
786 786
787 if (!(hdr->addr1[0] & 0x01) || 787 if (!(hdr->addr1[0] & 0x01) || local->bcrx_sta_key)
788 (void) hostap_handle_s 788 (void) hostap_handle_sta_crypto(local, hdr, &crypt,
789 789 &sta);
790 790
791 /* allow NULL decrypt to indic 791 /* allow NULL decrypt to indicate an station specific override
792 * for default encryption */ 792 * for default encryption */
793 if (crypt && (crypt->ops == NU 793 if (crypt && (crypt->ops == NULL ||
794 crypt->ops->decr 794 crypt->ops->decrypt_mpdu == NULL))
795 crypt = NULL; 795 crypt = NULL;
796 796
797 if (!crypt && (fc & IEEE80211_ 797 if (!crypt && (fc & IEEE80211_FCTL_PROTECTED)) {
798 #if 0 798 #if 0
799 /* This seems to be tr 799 /* This seems to be triggered by some (multicast?)
800 * frames from other t 800 * frames from other than current BSS, so just drop the
801 * frames silently ins 801 * frames silently instead of filling system log with
802 * these reports. */ 802 * these reports. */
803 printk(KERN_DEBUG "%s: 803 printk(KERN_DEBUG "%s: WEP decryption failed (not set)"
804 " (SA=" MAC_FMT 804 " (SA=" MAC_FMT ")\n",
805 local->dev->nam 805 local->dev->name,
806 hdr->addr2[0], 806 hdr->addr2[0], hdr->addr2[1], hdr->addr2[2],
807 hdr->addr2[3], 807 hdr->addr2[3], hdr->addr2[4], hdr->addr2[5]);
808 #endif 808 #endif
809 local->comm_tallies.rx 809 local->comm_tallies.rx_discards_wep_undecryptable++;
810 goto rx_dropped; 810 goto rx_dropped;
811 } 811 }
812 } 812 }
813 813
814 if (type != IEEE80211_FTYPE_DATA) { 814 if (type != IEEE80211_FTYPE_DATA) {
815 if (type == IEEE80211_FTYPE_MG 815 if (type == IEEE80211_FTYPE_MGMT &&
816 stype == IEEE80211_STYPE_A 816 stype == IEEE80211_STYPE_AUTH &&
817 fc & IEEE80211_FCTL_PROTEC 817 fc & IEEE80211_FCTL_PROTECTED && local->host_decrypt &&
818 (keyidx = hostap_rx_frame_ 818 (keyidx = hostap_rx_frame_decrypt(local, skb, crypt)) < 0)
819 { 819 {
820 printk(KERN_DEBUG "%s: 820 printk(KERN_DEBUG "%s: failed to decrypt mgmt::auth "
821 "from " MAC_FMT 821 "from " MAC_FMT "\n", dev->name,
822 hdr->addr2[0], 822 hdr->addr2[0], hdr->addr2[1], hdr->addr2[2],
823 hdr->addr2[3], 823 hdr->addr2[3], hdr->addr2[4], hdr->addr2[5]);
824 /* TODO: could inform 824 /* TODO: could inform hostapd about this so that it
825 * could send auth fai 825 * could send auth failure report */
826 goto rx_dropped; 826 goto rx_dropped;
827 } 827 }
828 828
829 if (hostap_rx_frame_mgmt(local 829 if (hostap_rx_frame_mgmt(local, skb, rx_stats, type, stype))
830 goto rx_dropped; 830 goto rx_dropped;
831 else 831 else
832 goto rx_exit; 832 goto rx_exit;
833 } 833 }
834 834
835 /* Data frame - extract src/dst addres 835 /* Data frame - extract src/dst addresses */
836 if (skb->len < IEEE80211_DATA_HDR3_LEN 836 if (skb->len < IEEE80211_DATA_HDR3_LEN)
837 goto rx_dropped; 837 goto rx_dropped;
838 838
839 switch (fc & (IEEE80211_FCTL_FROMDS | 839 switch (fc & (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) {
840 case IEEE80211_FCTL_FROMDS: 840 case IEEE80211_FCTL_FROMDS:
841 memcpy(dst, hdr->addr1, ETH_AL 841 memcpy(dst, hdr->addr1, ETH_ALEN);
842 memcpy(src, hdr->addr3, ETH_AL 842 memcpy(src, hdr->addr3, ETH_ALEN);
843 break; 843 break;
844 case IEEE80211_FCTL_TODS: 844 case IEEE80211_FCTL_TODS:
845 memcpy(dst, hdr->addr3, ETH_AL 845 memcpy(dst, hdr->addr3, ETH_ALEN);
846 memcpy(src, hdr->addr2, ETH_AL 846 memcpy(src, hdr->addr2, ETH_ALEN);
847 break; 847 break;
848 case IEEE80211_FCTL_FROMDS | IEEE80211 848 case IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS:
849 if (skb->len < IEEE80211_DATA_ 849 if (skb->len < IEEE80211_DATA_HDR4_LEN)
850 goto rx_dropped; 850 goto rx_dropped;
851 memcpy(dst, hdr->addr3, ETH_AL 851 memcpy(dst, hdr->addr3, ETH_ALEN);
852 memcpy(src, hdr->addr4, ETH_AL 852 memcpy(src, hdr->addr4, ETH_ALEN);
853 break; 853 break;
854 case 0: 854 case 0:
855 memcpy(dst, hdr->addr1, ETH_AL 855 memcpy(dst, hdr->addr1, ETH_ALEN);
856 memcpy(src, hdr->addr2, ETH_AL 856 memcpy(src, hdr->addr2, ETH_ALEN);
857 break; 857 break;
858 } 858 }
859 859
860 if (hostap_rx_frame_wds(local, hdr, fc 860 if (hostap_rx_frame_wds(local, hdr, fc, &wds))
861 goto rx_dropped; 861 goto rx_dropped;
862 if (wds) { 862 if (wds) {
863 skb->dev = dev = wds; 863 skb->dev = dev = wds;
864 stats = hostap_get_stats(dev); 864 stats = hostap_get_stats(dev);
865 } 865 }
866 866
867 if (local->iw_mode == IW_MODE_MASTER & 867 if (local->iw_mode == IW_MODE_MASTER && !wds &&
868 (fc & (IEEE80211_FCTL_TODS | IEEE8 868 (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
869 IEEE80211_FCTL_FROMDS && 869 IEEE80211_FCTL_FROMDS &&
870 local->stadev && 870 local->stadev &&
871 memcmp(hdr->addr2, local->assoc_ap 871 memcmp(hdr->addr2, local->assoc_ap_addr, ETH_ALEN) == 0) {
872 /* Frame from BSSID of the AP 872 /* Frame from BSSID of the AP for which we are a client */
873 skb->dev = dev = local->stadev 873 skb->dev = dev = local->stadev;
874 stats = hostap_get_stats(dev); 874 stats = hostap_get_stats(dev);
875 from_assoc_ap = 1; 875 from_assoc_ap = 1;
876 } 876 }
877 877
878 dev->last_rx = jiffies; 878 dev->last_rx = jiffies;
879 879
880 if ((local->iw_mode == IW_MODE_MASTER 880 if ((local->iw_mode == IW_MODE_MASTER ||
881 local->iw_mode == IW_MODE_REPEAT) 881 local->iw_mode == IW_MODE_REPEAT) &&
882 !from_assoc_ap) { 882 !from_assoc_ap) {
883 switch (hostap_handle_sta_rx(l 883 switch (hostap_handle_sta_rx(local, dev, skb, rx_stats,
884 w 884 wds != NULL)) {
885 case AP_RX_CONTINUE_NOT_AUTHOR 885 case AP_RX_CONTINUE_NOT_AUTHORIZED:
886 frame_authorized = 0; 886 frame_authorized = 0;
887 break; 887 break;
888 case AP_RX_CONTINUE: 888 case AP_RX_CONTINUE:
889 frame_authorized = 1; 889 frame_authorized = 1;
890 break; 890 break;
891 case AP_RX_DROP: 891 case AP_RX_DROP:
892 goto rx_dropped; 892 goto rx_dropped;
893 case AP_RX_EXIT: 893 case AP_RX_EXIT:
894 goto rx_exit; 894 goto rx_exit;
895 } 895 }
896 } 896 }
897 897
898 /* Nullfunc frames may have PS-bit set 898 /* Nullfunc frames may have PS-bit set, so they must be passed to
899 * hostap_handle_sta_rx() before being 899 * hostap_handle_sta_rx() before being dropped here. */
900 if (stype != IEEE80211_STYPE_DATA && 900 if (stype != IEEE80211_STYPE_DATA &&
901 stype != IEEE80211_STYPE_DATA_CFAC 901 stype != IEEE80211_STYPE_DATA_CFACK &&
902 stype != IEEE80211_STYPE_DATA_CFPO 902 stype != IEEE80211_STYPE_DATA_CFPOLL &&
903 stype != IEEE80211_STYPE_DATA_CFAC 903 stype != IEEE80211_STYPE_DATA_CFACKPOLL) {
904 if (stype != IEEE80211_STYPE_N 904 if (stype != IEEE80211_STYPE_NULLFUNC)
905 printk(KERN_DEBUG "%s: 905 printk(KERN_DEBUG "%s: RX: dropped data frame "
906 "with no data ( 906 "with no data (type=0x%02x, subtype=0x%02x)\n",
907 dev->name, type 907 dev->name, type >> 2, stype >> 4);
908 goto rx_dropped; 908 goto rx_dropped;
909 } 909 }
910 910
911 /* skb: hdr + (possibly fragmented, po 911 /* skb: hdr + (possibly fragmented, possibly encrypted) payload */
912 912
913 if (local->host_decrypt && (fc & IEEE8 913 if (local->host_decrypt && (fc & IEEE80211_FCTL_PROTECTED) &&
914 (keyidx = hostap_rx_frame_decrypt( 914 (keyidx = hostap_rx_frame_decrypt(local, skb, crypt)) < 0)
915 goto rx_dropped; 915 goto rx_dropped;
916 hdr = (struct ieee80211_hdr_4addr *) s 916 hdr = (struct ieee80211_hdr_4addr *) skb->data;
917 917
918 /* skb: hdr + (possibly fragmented) pl 918 /* skb: hdr + (possibly fragmented) plaintext payload */
919 919
920 if (local->host_decrypt && (fc & IEEE8 920 if (local->host_decrypt && (fc & IEEE80211_FCTL_PROTECTED) &&
921 (frag != 0 || (fc & IEEE80211_FCTL 921 (frag != 0 || (fc & IEEE80211_FCTL_MOREFRAGS))) {
922 int flen; 922 int flen;
923 struct sk_buff *frag_skb = 923 struct sk_buff *frag_skb =
924 prism2_frag_cache_get( 924 prism2_frag_cache_get(local, hdr);
925 if (!frag_skb) { 925 if (!frag_skb) {
926 printk(KERN_DEBUG "%s: 926 printk(KERN_DEBUG "%s: Rx cannot get skb from "
927 "fragment cache 927 "fragment cache (morefrag=%d seq=%u frag=%u)\n",
928 dev->name, (fc 928 dev->name, (fc & IEEE80211_FCTL_MOREFRAGS) != 0,
929 WLAN_GET_SEQ_SE 929 WLAN_GET_SEQ_SEQ(sc) >> 4, frag);
930 goto rx_dropped; 930 goto rx_dropped;
931 } 931 }
932 932
933 flen = skb->len; 933 flen = skb->len;
934 if (frag != 0) 934 if (frag != 0)
935 flen -= hdrlen; 935 flen -= hdrlen;
936 936
937 if (frag_skb->tail + flen > fr 937 if (frag_skb->tail + flen > frag_skb->end) {
938 printk(KERN_WARNING "% 938 printk(KERN_WARNING "%s: host decrypted and "
939 "reassembled fr 939 "reassembled frame did not fit skb\n",
940 dev->name); 940 dev->name);
941 prism2_frag_cache_inva 941 prism2_frag_cache_invalidate(local, hdr);
942 goto rx_dropped; 942 goto rx_dropped;
943 } 943 }
944 944
945 if (frag == 0) { 945 if (frag == 0) {
946 /* copy first fragment 946 /* copy first fragment (including full headers) into
947 * beginning of the fr 947 * beginning of the fragment cache skb */
948 skb_copy_from_linear_d 948 skb_copy_from_linear_data(skb, skb_put(frag_skb, flen),
949 949 flen);
950 } else { 950 } else {
951 /* append frame payloa 951 /* append frame payload to the end of the fragment
952 * cache skb */ 952 * cache skb */
953 skb_copy_from_linear_d 953 skb_copy_from_linear_data_offset(skb, hdrlen,
954 954 skb_put(frag_skb,
955 955 flen), flen);
956 } 956 }
957 dev_kfree_skb(skb); 957 dev_kfree_skb(skb);
958 skb = NULL; 958 skb = NULL;
959 959
960 if (fc & IEEE80211_FCTL_MOREFR 960 if (fc & IEEE80211_FCTL_MOREFRAGS) {
961 /* more fragments expe 961 /* more fragments expected - leave the skb in fragment
962 * cache for now; it w 962 * cache for now; it will be delivered to upper layers
963 * after all fragments 963 * after all fragments have been received */
964 goto rx_exit; 964 goto rx_exit;
965 } 965 }
966 966
967 /* this was the last fragment 967 /* this was the last fragment and the frame will be
968 * delivered, so remove skb fr 968 * delivered, so remove skb from fragment cache */
969 skb = frag_skb; 969 skb = frag_skb;
970 hdr = (struct ieee80211_hdr_4a 970 hdr = (struct ieee80211_hdr_4addr *) skb->data;
971 prism2_frag_cache_invalidate(l 971 prism2_frag_cache_invalidate(local, hdr);
972 } 972 }
973 973
974 /* skb: hdr + (possible reassembled) f 974 /* skb: hdr + (possible reassembled) full MSDU payload; possibly still
975 * encrypted/authenticated */ 975 * encrypted/authenticated */
976 976
977 if (local->host_decrypt && (fc & IEEE8 977 if (local->host_decrypt && (fc & IEEE80211_FCTL_PROTECTED) &&
978 hostap_rx_frame_decrypt_msdu(local 978 hostap_rx_frame_decrypt_msdu(local, skb, keyidx, crypt))
979 goto rx_dropped; 979 goto rx_dropped;
980 980
981 hdr = (struct ieee80211_hdr_4addr *) s 981 hdr = (struct ieee80211_hdr_4addr *) skb->data;
982 if (crypt && !(fc & IEEE80211_FCTL_PRO 982 if (crypt && !(fc & IEEE80211_FCTL_PROTECTED) && !local->open_wep) {
983 if (local->ieee_802_1x && 983 if (local->ieee_802_1x &&
984 hostap_is_eapol_frame(loca 984 hostap_is_eapol_frame(local, skb)) {
985 /* pass unencrypted EA 985 /* pass unencrypted EAPOL frames even if encryption is
986 * configured */ 986 * configured */
987 PDEBUG(DEBUG_EXTRA2, " 987 PDEBUG(DEBUG_EXTRA2, "%s: RX: IEEE 802.1X - passing "
988 "unencrypted EA 988 "unencrypted EAPOL frame\n", local->dev->name);
989 } else { 989 } else {
990 printk(KERN_DEBUG "%s: 990 printk(KERN_DEBUG "%s: encryption configured, but RX "
991 "frame not encr 991 "frame not encrypted (SA=" MAC_FMT ")\n",
992 local->dev->nam 992 local->dev->name,
993 hdr->addr2[0], 993 hdr->addr2[0], hdr->addr2[1], hdr->addr2[2],
994 hdr->addr2[3], 994 hdr->addr2[3], hdr->addr2[4], hdr->addr2[5]);
995 goto rx_dropped; 995 goto rx_dropped;
996 } 996 }
997 } 997 }
998 998
999 if (local->drop_unencrypted && !(fc & 999 if (local->drop_unencrypted && !(fc & IEEE80211_FCTL_PROTECTED) &&
1000 !hostap_is_eapol_frame(local, skb 1000 !hostap_is_eapol_frame(local, skb)) {
1001 if (net_ratelimit()) { 1001 if (net_ratelimit()) {
1002 printk(KERN_DEBUG "%s 1002 printk(KERN_DEBUG "%s: dropped unencrypted RX data "
1003 "frame from " 1003 "frame from " MAC_FMT " (drop_unencrypted=1)\n",
1004 dev->name, 1004 dev->name,
1005 hdr->addr2[0], 1005 hdr->addr2[0], hdr->addr2[1], hdr->addr2[2],
1006 hdr->addr2[3], 1006 hdr->addr2[3], hdr->addr2[4], hdr->addr2[5]);
1007 } 1007 }
1008 goto rx_dropped; 1008 goto rx_dropped;
1009 } 1009 }
1010 1010
1011 /* skb: hdr + (possible reassembled) 1011 /* skb: hdr + (possible reassembled) full plaintext payload */
1012 1012
1013 payload = skb->data + hdrlen; 1013 payload = skb->data + hdrlen;
1014 ethertype = (payload[6] << 8) | paylo 1014 ethertype = (payload[6] << 8) | payload[7];
1015 1015
1016 /* If IEEE 802.1X is used, check whet 1016 /* If IEEE 802.1X is used, check whether the port is authorized to send
1017 * the received frame. */ 1017 * the received frame. */
1018 if (local->ieee_802_1x && local->iw_m 1018 if (local->ieee_802_1x && local->iw_mode == IW_MODE_MASTER) {
1019 if (ethertype == ETH_P_PAE) { 1019 if (ethertype == ETH_P_PAE) {
1020 PDEBUG(DEBUG_EXTRA2, 1020 PDEBUG(DEBUG_EXTRA2, "%s: RX: IEEE 802.1X frame\n",
1021 dev->name); 1021 dev->name);
1022 if (local->hostapd && 1022 if (local->hostapd && local->apdev) {
1023 /* Send IEEE 1023 /* Send IEEE 802.1X frames to the user
1024 * space daem 1024 * space daemon for processing */
1025 prism2_rx_802 1025 prism2_rx_80211(local->apdev, skb, rx_stats,
1026 1026 PRISM2_RX_MGMT);
1027 local->apdevs 1027 local->apdevstats.rx_packets++;
1028 local->apdevs 1028 local->apdevstats.rx_bytes += skb->len;
1029 goto rx_exit; 1029 goto rx_exit;
1030 } 1030 }
1031 } else if (!frame_authorized) 1031 } else if (!frame_authorized) {
1032 printk(KERN_DEBUG "%s 1032 printk(KERN_DEBUG "%s: dropped frame from "
1033 "unauthorized 1033 "unauthorized port (IEEE 802.1X): "
1034 "ethertype=0x% 1034 "ethertype=0x%04x\n",
1035 dev->name, eth 1035 dev->name, ethertype);
1036 goto rx_dropped; 1036 goto rx_dropped;
1037 } 1037 }
1038 } 1038 }
1039 1039
1040 /* convert hdr + possible LLC headers 1040 /* convert hdr + possible LLC headers into Ethernet header */
1041 if (skb->len - hdrlen >= 8 && 1041 if (skb->len - hdrlen >= 8 &&
1042 ((memcmp(payload, rfc1042_header, 1042 ((memcmp(payload, rfc1042_header, 6) == 0 &&
1043 ethertype != ETH_P_AARP && ethe 1043 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
1044 memcmp(payload, bridge_tunnel_he 1044 memcmp(payload, bridge_tunnel_header, 6) == 0)) {
1045 /* remove RFC1042 or Bridge-T 1045 /* remove RFC1042 or Bridge-Tunnel encapsulation and
1046 * replace EtherType */ 1046 * replace EtherType */
1047 skb_pull(skb, hdrlen + 6); 1047 skb_pull(skb, hdrlen + 6);
1048 memcpy(skb_push(skb, ETH_ALEN 1048 memcpy(skb_push(skb, ETH_ALEN), src, ETH_ALEN);
1049 memcpy(skb_push(skb, ETH_ALEN 1049 memcpy(skb_push(skb, ETH_ALEN), dst, ETH_ALEN);
1050 } else { 1050 } else {
1051 __be16 len; 1051 __be16 len;
1052 /* Leave Ethernet header part 1052 /* Leave Ethernet header part of hdr and full payload */
1053 skb_pull(skb, hdrlen); 1053 skb_pull(skb, hdrlen);
1054 len = htons(skb->len); 1054 len = htons(skb->len);
1055 memcpy(skb_push(skb, 2), &len 1055 memcpy(skb_push(skb, 2), &len, 2);
1056 memcpy(skb_push(skb, ETH_ALEN 1056 memcpy(skb_push(skb, ETH_ALEN), src, ETH_ALEN);
1057 memcpy(skb_push(skb, ETH_ALEN 1057 memcpy(skb_push(skb, ETH_ALEN), dst, ETH_ALEN);
1058 } 1058 }
1059 1059
1060 if (wds && ((fc & (IEEE80211_FCTL_TOD 1060 if (wds && ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
1061 IEEE80211_FCTL_TODS) && 1061 IEEE80211_FCTL_TODS) &&
1062 skb->len >= ETH_HLEN + ETH_ALEN) 1062 skb->len >= ETH_HLEN + ETH_ALEN) {
1063 /* Non-standard frame: get ad 1063 /* Non-standard frame: get addr4 from its bogus location after
1064 * the payload */ 1064 * the payload */
1065 skb_copy_from_linear_data_off 1065 skb_copy_from_linear_data_offset(skb, skb->len - ETH_ALEN,
1066 1066 skb->data + ETH_ALEN,
1067 1067 ETH_ALEN);
1068 skb_trim(skb, skb->len - ETH_ 1068 skb_trim(skb, skb->len - ETH_ALEN);
1069 } 1069 }
1070 1070
1071 stats->rx_packets++; 1071 stats->rx_packets++;
1072 stats->rx_bytes += skb->len; 1072 stats->rx_bytes += skb->len;
1073 1073
1074 if (local->iw_mode == IW_MODE_MASTER 1074 if (local->iw_mode == IW_MODE_MASTER && !wds &&
1075 local->ap->bridge_packets) { 1075 local->ap->bridge_packets) {
1076 if (dst[0] & 0x01) { 1076 if (dst[0] & 0x01) {
1077 /* copy multicast fra 1077 /* copy multicast frame both to the higher layers and
1078 * to the wireless me 1078 * to the wireless media */
1079 local->ap->bridged_mu 1079 local->ap->bridged_multicast++;
1080 skb2 = skb_clone(skb, 1080 skb2 = skb_clone(skb, GFP_ATOMIC);
1081 if (skb2 == NULL) 1081 if (skb2 == NULL)
1082 printk(KERN_D 1082 printk(KERN_DEBUG "%s: skb_clone failed for "
1083 "multi 1083 "multicast frame\n", dev->name);
1084 } else if (hostap_is_sta_auth 1084 } else if (hostap_is_sta_authorized(local->ap, dst)) {
1085 /* send frame directl 1085 /* send frame directly to the associated STA using
1086 * wireless media and 1086 * wireless media and not passing to higher layers */
1087 local->ap->bridged_un 1087 local->ap->bridged_unicast++;
1088 skb2 = skb; 1088 skb2 = skb;
1089 skb = NULL; 1089 skb = NULL;
1090 } 1090 }
1091 } 1091 }
1092 1092
1093 if (skb2 != NULL) { 1093 if (skb2 != NULL) {
1094 /* send to wireless media */ 1094 /* send to wireless media */
1095 skb2->dev = dev; 1095 skb2->dev = dev;
1096 skb2->protocol = __constant_h 1096 skb2->protocol = __constant_htons(ETH_P_802_3);
1097 skb_reset_mac_header(skb2); 1097 skb_reset_mac_header(skb2);
1098 skb_reset_network_header(skb2 1098 skb_reset_network_header(skb2);
1099 /* skb2->network_header += ET 1099 /* skb2->network_header += ETH_HLEN; */
1100 dev_queue_xmit(skb2); 1100 dev_queue_xmit(skb2);
1101 } 1101 }
1102 1102
1103 if (skb) { 1103 if (skb) {
1104 skb->protocol = eth_type_tran 1104 skb->protocol = eth_type_trans(skb, dev);
1105 memset(skb->cb, 0, sizeof(skb 1105 memset(skb->cb, 0, sizeof(skb->cb));
1106 netif_rx(skb); 1106 netif_rx(skb);
1107 } 1107 }
1108 1108
1109 rx_exit: 1109 rx_exit:
1110 if (sta) 1110 if (sta)
1111 hostap_handle_sta_release(sta 1111 hostap_handle_sta_release(sta);
1112 return; 1112 return;
1113 1113
1114 rx_dropped: 1114 rx_dropped:
1115 dev_kfree_skb(skb); 1115 dev_kfree_skb(skb);
1116 1116
1117 stats->rx_dropped++; 1117 stats->rx_dropped++;
1118 goto rx_exit; 1118 goto rx_exit;
1119 } 1119 }
1120 1120
1121 1121
1122 EXPORT_SYMBOL(hostap_80211_rx); 1122 EXPORT_SYMBOL(hostap_80211_rx);
1123 1123
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