2 * Original code based Host AP (software wireless LAN access point) driver
3 * for Intersil Prism2/2.5/3 - hostap.o module, common routines
5 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
7 * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
8 * Copyright (c) 2004, Intel Corporation
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation. See README and COPYING for
14 ******************************************************************************
16 Few modifications for Realtek's Wi-Fi drivers by
17 Andrea Merello <andreamrl@tiscali.it>
19 A special thanks goes to Realtek for their support !
21 ******************************************************************************/
24 #include <linux/compiler.h>
25 //#include <linux/config.h>
26 #include <linux/errno.h>
27 #include <linux/if_arp.h>
28 #include <linux/in6.h>
31 #include <linux/kernel.h>
32 #include <linux/module.h>
33 #include <linux/netdevice.h>
34 #include <linux/pci.h>
35 #include <linux/proc_fs.h>
36 #include <linux/skbuff.h>
37 #include <linux/slab.h>
38 #include <linux/tcp.h>
39 #include <linux/types.h>
40 #include <linux/wireless.h>
41 #include <linux/etherdevice.h>
42 #include <asm/uaccess.h>
43 #include <linux/ctype.h>
45 #include "ieee80211.h"
47 static inline void ieee80211_monitor_rx(struct ieee80211_device
*ieee
,
49 struct ieee80211_rx_stats
*rx_stats
)
51 struct ieee80211_hdr_4addr
*hdr
= (struct ieee80211_hdr_4addr
*)skb
->data
;
52 u16 fc
= le16_to_cpu(hdr
->frame_ctl
);
55 skb_reset_mac_header(skb
);
57 skb_pull(skb
, ieee80211_get_hdrlen(fc
));
58 skb
->pkt_type
= PACKET_OTHERHOST
;
59 skb
->protocol
= __constant_htons(ETH_P_80211_RAW
);
60 memset(skb
->cb
, 0, sizeof(skb
->cb
));
65 /* Called only as a tasklet (software IRQ) */
66 static struct ieee80211_frag_entry
*
67 ieee80211_frag_cache_find(struct ieee80211_device
*ieee
, unsigned int seq
,
68 unsigned int frag
, u8 tid
,u8
*src
, u8
*dst
)
70 struct ieee80211_frag_entry
*entry
;
73 for (i
= 0; i
< IEEE80211_FRAG_CACHE_LEN
; i
++) {
74 entry
= &ieee
->frag_cache
[tid
][i
];
75 if (entry
->skb
!= NULL
&&
76 time_after(jiffies
, entry
->first_frag_time
+ 2 * HZ
)) {
78 "expiring fragment cache entry "
79 "seq=%u last_frag=%u\n",
80 entry
->seq
, entry
->last_frag
);
81 dev_kfree_skb_any(entry
->skb
);
85 if (entry
->skb
!= NULL
&& entry
->seq
== seq
&&
86 (entry
->last_frag
+ 1 == frag
|| frag
== -1) &&
87 memcmp(entry
->src_addr
, src
, ETH_ALEN
) == 0 &&
88 memcmp(entry
->dst_addr
, dst
, ETH_ALEN
) == 0)
95 /* Called only as a tasklet (software IRQ) */
96 static struct sk_buff
*
97 ieee80211_frag_cache_get(struct ieee80211_device
*ieee
,
98 struct ieee80211_hdr_4addr
*hdr
)
100 struct sk_buff
*skb
= NULL
;
101 u16 fc
= le16_to_cpu(hdr
->frame_ctl
);
102 u16 sc
= le16_to_cpu(hdr
->seq_ctl
);
103 unsigned int frag
= WLAN_GET_SEQ_FRAG(sc
);
104 unsigned int seq
= WLAN_GET_SEQ_SEQ(sc
);
105 struct ieee80211_frag_entry
*entry
;
106 struct ieee80211_hdr_3addrqos
*hdr_3addrqos
;
107 struct ieee80211_hdr_4addrqos
*hdr_4addrqos
;
110 if (((fc
& IEEE80211_FCTL_DSTODS
) == IEEE80211_FCTL_DSTODS
)&&IEEE80211_QOS_HAS_SEQ(fc
)) {
111 hdr_4addrqos
= (struct ieee80211_hdr_4addrqos
*)hdr
;
112 tid
= le16_to_cpu(hdr_4addrqos
->qos_ctl
) & IEEE80211_QCTL_TID
;
115 } else if (IEEE80211_QOS_HAS_SEQ(fc
)) {
116 hdr_3addrqos
= (struct ieee80211_hdr_3addrqos
*)hdr
;
117 tid
= le16_to_cpu(hdr_3addrqos
->qos_ctl
) & IEEE80211_QCTL_TID
;
125 /* Reserve enough space to fit maximum frame length */
126 skb
= dev_alloc_skb(ieee
->dev
->mtu
+
127 sizeof(struct ieee80211_hdr_4addr
) +
132 (IEEE80211_QOS_HAS_SEQ(fc
)?2:0) /* QOS Control */);
136 entry
= &ieee
->frag_cache
[tid
][ieee
->frag_next_idx
[tid
]];
137 ieee
->frag_next_idx
[tid
]++;
138 if (ieee
->frag_next_idx
[tid
] >= IEEE80211_FRAG_CACHE_LEN
)
139 ieee
->frag_next_idx
[tid
] = 0;
141 if (entry
->skb
!= NULL
)
142 dev_kfree_skb_any(entry
->skb
);
144 entry
->first_frag_time
= jiffies
;
146 entry
->last_frag
= frag
;
148 memcpy(entry
->src_addr
, hdr
->addr2
, ETH_ALEN
);
149 memcpy(entry
->dst_addr
, hdr
->addr1
, ETH_ALEN
);
151 /* received a fragment of a frame for which the head fragment
152 * should have already been received */
153 entry
= ieee80211_frag_cache_find(ieee
, seq
, frag
, tid
,hdr
->addr2
,
156 entry
->last_frag
= frag
;
165 /* Called only as a tasklet (software IRQ) */
166 static int ieee80211_frag_cache_invalidate(struct ieee80211_device
*ieee
,
167 struct ieee80211_hdr_4addr
*hdr
)
169 u16 fc
= le16_to_cpu(hdr
->frame_ctl
);
170 u16 sc
= le16_to_cpu(hdr
->seq_ctl
);
171 unsigned int seq
= WLAN_GET_SEQ_SEQ(sc
);
172 struct ieee80211_frag_entry
*entry
;
173 struct ieee80211_hdr_3addrqos
*hdr_3addrqos
;
174 struct ieee80211_hdr_4addrqos
*hdr_4addrqos
;
177 if(((fc
& IEEE80211_FCTL_DSTODS
) == IEEE80211_FCTL_DSTODS
)&&IEEE80211_QOS_HAS_SEQ(fc
)) {
178 hdr_4addrqos
= (struct ieee80211_hdr_4addrqos
*)hdr
;
179 tid
= le16_to_cpu(hdr_4addrqos
->qos_ctl
) & IEEE80211_QCTL_TID
;
182 } else if (IEEE80211_QOS_HAS_SEQ(fc
)) {
183 hdr_3addrqos
= (struct ieee80211_hdr_3addrqos
*)hdr
;
184 tid
= le16_to_cpu(hdr_3addrqos
->qos_ctl
) & IEEE80211_QCTL_TID
;
191 entry
= ieee80211_frag_cache_find(ieee
, seq
, -1, tid
,hdr
->addr2
,
195 IEEE80211_DEBUG_FRAG(
196 "could not invalidate fragment cache "
197 "entry (seq=%u)\n", seq
);
207 /* ieee80211_rx_frame_mgtmt
209 * Responsible for handling management control frames
211 * Called by ieee80211_rx */
213 ieee80211_rx_frame_mgmt(struct ieee80211_device
*ieee
, struct sk_buff
*skb
,
214 struct ieee80211_rx_stats
*rx_stats
, u16 type
,
217 /* On the struct stats definition there is written that
218 * this is not mandatory.... but seems that the probe
219 * response parser uses it
221 struct ieee80211_hdr_3addr
* hdr
= (struct ieee80211_hdr_3addr
*)skb
->data
;
223 rx_stats
->len
= skb
->len
;
224 ieee80211_rx_mgt(ieee
,(struct ieee80211_hdr_4addr
*)skb
->data
,rx_stats
);
225 //if ((ieee->state == IEEE80211_LINKED) && (memcmp(hdr->addr3, ieee->current_network.bssid, ETH_ALEN)))
226 if ((memcmp(hdr
->addr1
, ieee
->dev
->dev_addr
, ETH_ALEN
)))//use ADDR1 to perform address matching for Management frames
228 dev_kfree_skb_any(skb
);
232 ieee80211_rx_frame_softmac(ieee
, skb
, rx_stats
, type
, stype
);
234 dev_kfree_skb_any(skb
);
239 if (ieee
->iw_mode
== IW_MODE_MASTER
) {
240 printk(KERN_DEBUG
"%s: Master mode not yet supported.\n",
244 hostap_update_sta_ps(ieee, (struct hostap_ieee80211_hdr_4addr *)
248 if (ieee
->hostapd
&& type
== IEEE80211_TYPE_MGMT
) {
249 if (stype
== WLAN_FC_STYPE_BEACON
&&
250 ieee
->iw_mode
== IW_MODE_MASTER
) {
251 struct sk_buff
*skb2
;
252 /* Process beacon frames also in kernel driver to
253 * update STA(AP) table statistics */
254 skb2
= skb_clone(skb
, GFP_ATOMIC
);
256 hostap_rx(skb2
->dev
, skb2
, rx_stats
);
259 /* send management frames to the user space daemon for
261 ieee
->apdevstats
.rx_packets
++;
262 ieee
->apdevstats
.rx_bytes
+= skb
->len
;
263 prism2_rx_80211(ieee
->apdev
, skb
, rx_stats
, PRISM2_RX_MGMT
);
267 if (ieee
->iw_mode
== IW_MODE_MASTER
) {
268 if (type
!= WLAN_FC_TYPE_MGMT
&& type
!= WLAN_FC_TYPE_CTRL
) {
269 printk(KERN_DEBUG
"%s: unknown management frame "
270 "(type=0x%02x, stype=0x%02x) dropped\n",
271 skb
->dev
->name
, type
, stype
);
275 hostap_rx(skb
->dev
, skb
, rx_stats
);
279 printk(KERN_DEBUG
"%s: hostap_rx_frame_mgmt: management frame "
280 "received in non-Host AP mode\n", skb
->dev
->name
);
287 /* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
288 /* Ethernet-II snap header (RFC1042 for most EtherTypes) */
289 static unsigned char rfc1042_header
[] =
290 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
291 /* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
292 static unsigned char bridge_tunnel_header
[] =
293 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
294 /* No encapsulation header if EtherType < 0x600 (=length) */
296 /* Called by ieee80211_rx_frame_decrypt */
297 static int ieee80211_is_eapol_frame(struct ieee80211_device
*ieee
,
298 struct sk_buff
*skb
, size_t hdrlen
)
300 struct net_device
*dev
= ieee
->dev
;
302 struct ieee80211_hdr_4addr
*hdr
;
308 hdr
= (struct ieee80211_hdr_4addr
*) skb
->data
;
309 fc
= le16_to_cpu(hdr
->frame_ctl
);
311 /* check that the frame is unicast frame to us */
312 if ((fc
& (IEEE80211_FCTL_TODS
| IEEE80211_FCTL_FROMDS
)) ==
313 IEEE80211_FCTL_TODS
&&
314 memcmp(hdr
->addr1
, dev
->dev_addr
, ETH_ALEN
) == 0 &&
315 memcmp(hdr
->addr3
, dev
->dev_addr
, ETH_ALEN
) == 0) {
316 /* ToDS frame with own addr BSSID and DA */
317 } else if ((fc
& (IEEE80211_FCTL_TODS
| IEEE80211_FCTL_FROMDS
)) ==
318 IEEE80211_FCTL_FROMDS
&&
319 memcmp(hdr
->addr1
, dev
->dev_addr
, ETH_ALEN
) == 0) {
320 /* FromDS frame with own addr as DA */
324 if (skb
->len
< 24 + 8)
327 /* check for port access entity Ethernet type */
328 // pos = skb->data + 24;
329 pos
= skb
->data
+ hdrlen
;
330 ethertype
= (pos
[6] << 8) | pos
[7];
331 if (ethertype
== ETH_P_PAE
)
337 /* Called only as a tasklet (software IRQ), by ieee80211_rx */
339 ieee80211_rx_frame_decrypt(struct ieee80211_device
* ieee
, struct sk_buff
*skb
,
340 struct ieee80211_crypt_data
*crypt
)
342 struct ieee80211_hdr_4addr
*hdr
;
345 if (crypt
== NULL
|| crypt
->ops
->decrypt_mpdu
== NULL
)
347 if (ieee
->hwsec_active
)
349 cb_desc
*tcb_desc
= (cb_desc
*)(skb
->cb
+ MAX_DEV_ADDR_SIZE
);
350 tcb_desc
->bHwSec
= 1;
352 hdr
= (struct ieee80211_hdr_4addr
*) skb
->data
;
353 hdrlen
= ieee80211_get_hdrlen(le16_to_cpu(hdr
->frame_ctl
));
355 #ifdef CONFIG_IEEE80211_CRYPT_TKIP
356 if (ieee
->tkip_countermeasures
&&
357 strcmp(crypt
->ops
->name
, "TKIP") == 0) {
358 if (net_ratelimit()) {
359 printk(KERN_DEBUG
"%s: TKIP countermeasures: dropped "
360 "received packet from %pM\n",
361 ieee
->dev
->name
, hdr
->addr2
);
367 atomic_inc(&crypt
->refcnt
);
368 res
= crypt
->ops
->decrypt_mpdu(skb
, hdrlen
, crypt
->priv
);
369 atomic_dec(&crypt
->refcnt
);
371 IEEE80211_DEBUG_DROP(
372 "decryption failed (SA=%pM"
373 ") res=%d\n", hdr
->addr2
, res
);
375 IEEE80211_DEBUG_DROP("Decryption failed ICV "
376 "mismatch (key %d)\n",
377 skb
->data
[hdrlen
+ 3] >> 6);
378 ieee
->ieee_stats
.rx_discards_undecryptable
++;
386 /* Called only as a tasklet (software IRQ), by ieee80211_rx */
388 ieee80211_rx_frame_decrypt_msdu(struct ieee80211_device
* ieee
, struct sk_buff
*skb
,
389 int keyidx
, struct ieee80211_crypt_data
*crypt
)
391 struct ieee80211_hdr_4addr
*hdr
;
394 if (crypt
== NULL
|| crypt
->ops
->decrypt_msdu
== NULL
)
396 if (ieee
->hwsec_active
)
398 cb_desc
*tcb_desc
= (cb_desc
*)(skb
->cb
+ MAX_DEV_ADDR_SIZE
);
399 tcb_desc
->bHwSec
= 1;
402 hdr
= (struct ieee80211_hdr_4addr
*) skb
->data
;
403 hdrlen
= ieee80211_get_hdrlen(le16_to_cpu(hdr
->frame_ctl
));
405 atomic_inc(&crypt
->refcnt
);
406 res
= crypt
->ops
->decrypt_msdu(skb
, keyidx
, hdrlen
, crypt
->priv
);
407 atomic_dec(&crypt
->refcnt
);
409 printk(KERN_DEBUG
"%s: MSDU decryption/MIC verification failed"
410 " (SA=%pM keyidx=%d)\n",
411 ieee
->dev
->name
, hdr
->addr2
, keyidx
);
419 /* this function is stolen from ipw2200 driver*/
420 #define IEEE_PACKET_RETRY_TIME (5*HZ)
421 static int is_duplicate_packet(struct ieee80211_device
*ieee
,
422 struct ieee80211_hdr_4addr
*header
)
424 u16 fc
= le16_to_cpu(header
->frame_ctl
);
425 u16 sc
= le16_to_cpu(header
->seq_ctl
);
426 u16 seq
= WLAN_GET_SEQ_SEQ(sc
);
427 u16 frag
= WLAN_GET_SEQ_FRAG(sc
);
428 u16
*last_seq
, *last_frag
;
429 unsigned long *last_time
;
430 struct ieee80211_hdr_3addrqos
*hdr_3addrqos
;
431 struct ieee80211_hdr_4addrqos
*hdr_4addrqos
;
436 if(((fc
& IEEE80211_FCTL_DSTODS
) == IEEE80211_FCTL_DSTODS
)&&IEEE80211_QOS_HAS_SEQ(fc
)) {
437 hdr_4addrqos
= (struct ieee80211_hdr_4addrqos
*)header
;
438 tid
= le16_to_cpu(hdr_4addrqos
->qos_ctl
) & IEEE80211_QCTL_TID
;
441 } else if(IEEE80211_QOS_HAS_SEQ(fc
)) { //QoS
442 hdr_3addrqos
= (struct ieee80211_hdr_3addrqos
*)header
;
443 tid
= le16_to_cpu(hdr_3addrqos
->qos_ctl
) & IEEE80211_QCTL_TID
;
450 switch (ieee
->iw_mode
) {
454 struct ieee_ibss_seq
*entry
= NULL
;
455 u8
*mac
= header
->addr2
;
456 int index
= mac
[5] % IEEE_IBSS_MAC_HASH_SIZE
;
457 //for (pos = (head)->next; pos != (head); pos = pos->next)
458 //__list_for_each(p, &ieee->ibss_mac_hash[index]) {
459 list_for_each(p
, &ieee
->ibss_mac_hash
[index
]) {
460 entry
= list_entry(p
, struct ieee_ibss_seq
, list
);
461 if (!memcmp(entry
->mac
, mac
, ETH_ALEN
))
464 // if (memcmp(entry->mac, mac, ETH_ALEN)){
465 if (p
== &ieee
->ibss_mac_hash
[index
]) {
466 entry
= kmalloc(sizeof(struct ieee_ibss_seq
), GFP_ATOMIC
);
468 printk(KERN_WARNING
"Cannot malloc new mac entry\n");
471 memcpy(entry
->mac
, mac
, ETH_ALEN
);
472 entry
->seq_num
[tid
] = seq
;
473 entry
->frag_num
[tid
] = frag
;
474 entry
->packet_time
[tid
] = jiffies
;
475 list_add(&entry
->list
, &ieee
->ibss_mac_hash
[index
]);
478 last_seq
= &entry
->seq_num
[tid
];
479 last_frag
= &entry
->frag_num
[tid
];
480 last_time
= &entry
->packet_time
[tid
];
485 last_seq
= &ieee
->last_rxseq_num
[tid
];
486 last_frag
= &ieee
->last_rxfrag_num
[tid
];
487 last_time
= &ieee
->last_packet_time
[tid
];
495 // printk(KERN_WARNING ":)))))))))))%x %x %x, fc(%x)\n", tid, *last_seq, seq, header->frame_ctl);
497 if ((*last_seq
== seq
) &&
498 time_after(*last_time
+ IEEE_PACKET_RETRY_TIME
, jiffies
)) {
499 if (*last_frag
== frag
){
500 //printk(KERN_WARNING "[1] go drop!\n");
504 if (*last_frag
+ 1 != frag
)
505 /* out-of-order fragment */
506 //printk(KERN_WARNING "[2] go drop!\n");
512 *last_time
= jiffies
;
516 // BUG_ON(!(fc & IEEE80211_FCTL_RETRY));
524 PRX_REORDER_ENTRY pReorderEntry
527 struct list_head
*pList
= &pTS
->RxPendingPktList
;
528 while(pList
->next
!= &pTS
->RxPendingPktList
)
530 if( SN_LESS(pReorderEntry
->SeqNum
, ((PRX_REORDER_ENTRY
)list_entry(pList
->next
,RX_REORDER_ENTRY
,List
))->SeqNum
) )
534 else if( SN_EQUAL(pReorderEntry
->SeqNum
, ((PRX_REORDER_ENTRY
)list_entry(pList
->next
,RX_REORDER_ENTRY
,List
))->SeqNum
) )
543 pReorderEntry
->List
.next
= pList
->next
;
544 pReorderEntry
->List
.next
->prev
= &pReorderEntry
->List
;
545 pReorderEntry
->List
.prev
= pList
;
546 pList
->next
= &pReorderEntry
->List
;
551 void ieee80211_indicate_packets(struct ieee80211_device
*ieee
, struct ieee80211_rxb
** prxbIndicateArray
,u8 index
)
556 // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): hahahahhhh, We indicate packet from reorder list, index is %u\n",__FUNCTION__,index);
557 for(j
= 0; j
<index
; j
++)
559 //added by amy for reorder
560 struct ieee80211_rxb
* prxb
= prxbIndicateArray
[j
];
561 for(i
= 0; i
<prxb
->nr_subframes
; i
++) {
562 struct sk_buff
*sub_skb
= prxb
->subframes
[i
];
564 /* convert hdr + possible LLC headers into Ethernet header */
565 ethertype
= (sub_skb
->data
[6] << 8) | sub_skb
->data
[7];
566 if (sub_skb
->len
>= 8 &&
567 ((memcmp(sub_skb
->data
, rfc1042_header
, SNAP_SIZE
) == 0 &&
568 ethertype
!= ETH_P_AARP
&& ethertype
!= ETH_P_IPX
) ||
569 memcmp(sub_skb
->data
, bridge_tunnel_header
, SNAP_SIZE
) == 0)) {
570 /* remove RFC1042 or Bridge-Tunnel encapsulation and
571 * replace EtherType */
572 skb_pull(sub_skb
, SNAP_SIZE
);
573 memcpy(skb_push(sub_skb
, ETH_ALEN
), prxb
->src
, ETH_ALEN
);
574 memcpy(skb_push(sub_skb
, ETH_ALEN
), prxb
->dst
, ETH_ALEN
);
577 /* Leave Ethernet header part of hdr and full payload */
578 len
= htons(sub_skb
->len
);
579 memcpy(skb_push(sub_skb
, 2), &len
, 2);
580 memcpy(skb_push(sub_skb
, ETH_ALEN
), prxb
->src
, ETH_ALEN
);
581 memcpy(skb_push(sub_skb
, ETH_ALEN
), prxb
->dst
, ETH_ALEN
);
583 //stats->rx_packets++;
584 //stats->rx_bytes += sub_skb->len;
586 /* Indicat the packets to upper layer */
588 //printk("0skb_len(%d)\n", skb->len);
589 sub_skb
->protocol
= eth_type_trans(sub_skb
, ieee
->dev
);
590 memset(sub_skb
->cb
, 0, sizeof(sub_skb
->cb
));
591 sub_skb
->dev
= ieee
->dev
;
592 sub_skb
->ip_summed
= CHECKSUM_NONE
; /* 802.11 crc not sufficient */
593 //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */
594 ieee
->last_rx_ps_time
= jiffies
;
595 //printk("1skb_len(%d)\n", skb->len);
605 void RxReorderIndicatePacket( struct ieee80211_device
*ieee
,
606 struct ieee80211_rxb
* prxb
,
610 PRT_HIGH_THROUGHPUT pHTInfo
= ieee
->pHTInfo
;
611 PRX_REORDER_ENTRY pReorderEntry
= NULL
;
612 struct ieee80211_rxb
* prxbIndicateArray
[REORDER_WIN_SIZE
];
613 u8 WinSize
= pHTInfo
->RxReorderWinSize
;
614 u16 WinEnd
= (pTS
->RxIndicateSeq
+ WinSize
-1)%4096;
616 bool bMatchWinStart
= false, bPktInBuf
= false;
617 IEEE80211_DEBUG(IEEE80211_DL_REORDER
,"%s(): Seq is %d,pTS->RxIndicateSeq is %d, WinSize is %d\n",__FUNCTION__
,SeqNum
,pTS
->RxIndicateSeq
,WinSize
);
618 /* Rx Reorder initialize condition.*/
619 if(pTS
->RxIndicateSeq
== 0xffff) {
620 pTS
->RxIndicateSeq
= SeqNum
;
623 /* Drop out the packet which SeqNum is smaller than WinStart */
624 if(SN_LESS(SeqNum
, pTS
->RxIndicateSeq
)) {
625 IEEE80211_DEBUG(IEEE80211_DL_REORDER
,"Packet Drop! IndicateSeq: %d, NewSeq: %d\n",
626 pTS
->RxIndicateSeq
, SeqNum
);
627 pHTInfo
->RxReorderDropCounter
++;
630 for(i
=0; i
< prxb
->nr_subframes
; i
++) {
631 dev_kfree_skb(prxb
->subframes
[i
]);
640 * Sliding window manipulation. Conditions includes:
641 * 1. Incoming SeqNum is equal to WinStart =>Window shift 1
642 * 2. Incoming SeqNum is larger than the WinEnd => Window shift N
644 if(SN_EQUAL(SeqNum
, pTS
->RxIndicateSeq
)) {
645 pTS
->RxIndicateSeq
= (pTS
->RxIndicateSeq
+ 1) % 4096;
646 bMatchWinStart
= true;
647 } else if(SN_LESS(WinEnd
, SeqNum
)) {
648 if(SeqNum
>= (WinSize
- 1)) {
649 pTS
->RxIndicateSeq
= SeqNum
+ 1 -WinSize
;
651 pTS
->RxIndicateSeq
= 4095 - (WinSize
- (SeqNum
+1)) + 1;
653 IEEE80211_DEBUG(IEEE80211_DL_REORDER
, "Window Shift! IndicateSeq: %d, NewSeq: %d\n",pTS
->RxIndicateSeq
, SeqNum
);
657 * Indication process.
658 * After Packet dropping and Sliding Window shifting as above, we can now just indicate the packets
659 * with the SeqNum smaller than latest WinStart and buffer other packets.
661 /* For Rx Reorder condition:
662 * 1. All packets with SeqNum smaller than WinStart => Indicate
663 * 2. All packets with SeqNum larger than or equal to WinStart => Buffer it.
666 /* Current packet is going to be indicated.*/
667 IEEE80211_DEBUG(IEEE80211_DL_REORDER
, "Packets indication!! IndicateSeq: %d, NewSeq: %d\n",\
668 pTS
->RxIndicateSeq
, SeqNum
);
669 prxbIndicateArray
[0] = prxb
;
670 // printk("========================>%s(): SeqNum is %d\n",__FUNCTION__,SeqNum);
673 /* Current packet is going to be inserted into pending list.*/
674 //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): We RX no ordered packed, insert to ordered list\n",__FUNCTION__);
675 if(!list_empty(&ieee
->RxReorder_Unused_List
)) {
676 pReorderEntry
= (PRX_REORDER_ENTRY
)list_entry(ieee
->RxReorder_Unused_List
.next
,RX_REORDER_ENTRY
,List
);
677 list_del_init(&pReorderEntry
->List
);
679 /* Make a reorder entry and insert into a the packet list.*/
680 pReorderEntry
->SeqNum
= SeqNum
;
681 pReorderEntry
->prxb
= prxb
;
682 // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): pREorderEntry->SeqNum is %d\n",__FUNCTION__,pReorderEntry->SeqNum);
684 if(!AddReorderEntry(pTS
, pReorderEntry
)) {
685 IEEE80211_DEBUG(IEEE80211_DL_REORDER
, "%s(): Duplicate packet is dropped!! IndicateSeq: %d, NewSeq: %d\n",
686 __FUNCTION__
, pTS
->RxIndicateSeq
, SeqNum
);
687 list_add_tail(&pReorderEntry
->List
,&ieee
->RxReorder_Unused_List
);
690 for(i
=0; i
< prxb
->nr_subframes
; i
++) {
691 dev_kfree_skb(prxb
->subframes
[i
]);
697 IEEE80211_DEBUG(IEEE80211_DL_REORDER
,
698 "Pkt insert into buffer!! IndicateSeq: %d, NewSeq: %d\n",pTS
->RxIndicateSeq
, SeqNum
);
703 * Packets are dropped if there is not enough reorder entries.
704 * This part shall be modified!! We can just indicate all the
705 * packets in buffer and get reorder entries.
707 IEEE80211_DEBUG(IEEE80211_DL_ERR
, "RxReorderIndicatePacket(): There is no reorder entry!! Packet is dropped!!\n");
710 for(i
=0; i
< prxb
->nr_subframes
; i
++) {
711 dev_kfree_skb(prxb
->subframes
[i
]);
719 /* Check if there is any packet need indicate.*/
720 while(!list_empty(&pTS
->RxPendingPktList
)) {
721 IEEE80211_DEBUG(IEEE80211_DL_REORDER
,"%s(): start RREORDER indicate\n",__FUNCTION__
);
722 pReorderEntry
= (PRX_REORDER_ENTRY
)list_entry(pTS
->RxPendingPktList
.prev
,RX_REORDER_ENTRY
,List
);
723 if( SN_LESS(pReorderEntry
->SeqNum
, pTS
->RxIndicateSeq
) ||
724 SN_EQUAL(pReorderEntry
->SeqNum
, pTS
->RxIndicateSeq
))
726 /* This protect buffer from overflow. */
727 if(index
>= REORDER_WIN_SIZE
) {
728 IEEE80211_DEBUG(IEEE80211_DL_ERR
, "RxReorderIndicatePacket(): Buffer overflow!! \n");
733 list_del_init(&pReorderEntry
->List
);
735 if(SN_EQUAL(pReorderEntry
->SeqNum
, pTS
->RxIndicateSeq
))
736 pTS
->RxIndicateSeq
= (pTS
->RxIndicateSeq
+ 1) % 4096;
738 IEEE80211_DEBUG(IEEE80211_DL_REORDER
,"Packets indication!! IndicateSeq: %d, NewSeq: %d\n",pTS
->RxIndicateSeq
, SeqNum
);
739 prxbIndicateArray
[index
] = pReorderEntry
->prxb
;
740 // printk("========================>%s(): pReorderEntry->SeqNum is %d\n",__FUNCTION__,pReorderEntry->SeqNum);
743 list_add_tail(&pReorderEntry
->List
,&ieee
->RxReorder_Unused_List
);
750 /* Handling pending timer. Set this timer to prevent from long time Rx buffering.*/
752 // Cancel previous pending timer.
753 // del_timer_sync(&pTS->RxPktPendingTimer);
754 pTS
->RxTimeoutIndicateSeq
= 0xffff;
757 if(index
>REORDER_WIN_SIZE
){
758 IEEE80211_DEBUG(IEEE80211_DL_ERR
, "RxReorderIndicatePacket(): Rx Reorer buffer full!! \n");
761 ieee80211_indicate_packets(ieee
, prxbIndicateArray
, index
);
764 if(bPktInBuf
&& pTS
->RxTimeoutIndicateSeq
==0xffff) {
765 // Set new pending timer.
766 IEEE80211_DEBUG(IEEE80211_DL_REORDER
,"%s(): SET rx timeout timer\n", __FUNCTION__
);
767 pTS
->RxTimeoutIndicateSeq
= pTS
->RxIndicateSeq
;
768 if(timer_pending(&pTS
->RxPktPendingTimer
))
769 del_timer_sync(&pTS
->RxPktPendingTimer
);
770 pTS
->RxPktPendingTimer
.expires
= jiffies
+ MSECS(pHTInfo
->RxReorderPendingTime
);
771 add_timer(&pTS
->RxPktPendingTimer
);
775 u8
parse_subframe(struct sk_buff
*skb
,
776 struct ieee80211_rx_stats
*rx_stats
,
777 struct ieee80211_rxb
*rxb
,u8
* src
,u8
* dst
)
779 struct ieee80211_hdr_3addr
*hdr
= (struct ieee80211_hdr_3addr
* )skb
->data
;
780 u16 fc
= le16_to_cpu(hdr
->frame_ctl
);
782 u16 LLCOffset
= sizeof(struct ieee80211_hdr_3addr
);
784 bool bIsAggregateFrame
= false;
785 u16 nSubframe_Length
;
786 u8 nPadding_Length
= 0;
789 struct sk_buff
*sub_skb
;
791 /* just for debug purpose */
792 SeqNum
= WLAN_GET_SEQ_SEQ(le16_to_cpu(hdr
->seq_ctl
));
794 if((IEEE80211_QOS_HAS_SEQ(fc
))&&\
795 (((frameqos
*)(skb
->data
+ IEEE80211_3ADDR_LEN
))->field
.reserved
)) {
796 bIsAggregateFrame
= true;
799 if(IEEE80211_QOS_HAS_SEQ(fc
)) {
803 if(rx_stats
->bContainHTC
) {
804 LLCOffset
+= sHTCLng
;
806 //printk("ChkLength = %d\n", LLCOffset);
807 // Null packet, don't indicate it to upper layer
808 ChkLength
= LLCOffset
;/* + (Frame_WEP(frame)!=0 ?Adapter->MgntInfo.SecurityInfo.EncryptionHeadOverhead:0);*/
810 if( skb
->len
<= ChkLength
) {
814 skb_pull(skb
, LLCOffset
);
816 if(!bIsAggregateFrame
) {
817 rxb
->nr_subframes
= 1;
819 rxb
->subframes
[0] = skb
;
821 rxb
->subframes
[0] = skb_copy(skb
, GFP_ATOMIC
);
824 memcpy(rxb
->src
,src
,ETH_ALEN
);
825 memcpy(rxb
->dst
,dst
,ETH_ALEN
);
826 //IEEE80211_DEBUG_DATA(IEEE80211_DL_RX,skb->data,skb->len);
829 rxb
->nr_subframes
= 0;
830 memcpy(rxb
->src
,src
,ETH_ALEN
);
831 memcpy(rxb
->dst
,dst
,ETH_ALEN
);
832 while(skb
->len
> ETHERNET_HEADER_SIZE
) {
833 /* Offset 12 denote 2 mac address */
834 nSubframe_Length
= *((u16
*)(skb
->data
+ 12));
835 //==m==>change the length order
836 nSubframe_Length
= (nSubframe_Length
>>8) + (nSubframe_Length
<<8);
838 if(skb
->len
<(ETHERNET_HEADER_SIZE
+ nSubframe_Length
)) {
839 printk("%s: A-MSDU parse error!! pRfd->nTotalSubframe : %d\n",\
840 __FUNCTION__
,rxb
->nr_subframes
);
841 printk("%s: A-MSDU parse error!! Subframe Length: %d\n",__FUNCTION__
, nSubframe_Length
);
842 printk("nRemain_Length is %d and nSubframe_Length is : %d\n",skb
->len
,nSubframe_Length
);
843 printk("The Packet SeqNum is %d\n",SeqNum
);
847 /* move the data point to data content */
848 skb_pull(skb
, ETHERNET_HEADER_SIZE
);
851 sub_skb
= skb_clone(skb
, GFP_ATOMIC
);
852 sub_skb
->len
= nSubframe_Length
;
853 sub_skb
->tail
= sub_skb
->data
+ nSubframe_Length
;
855 /* Allocate new skb for releasing to upper layer */
856 sub_skb
= dev_alloc_skb(nSubframe_Length
+ 12);
857 skb_reserve(sub_skb
, 12);
858 data_ptr
= (u8
*)skb_put(sub_skb
, nSubframe_Length
);
859 memcpy(data_ptr
,skb
->data
,nSubframe_Length
);
861 rxb
->subframes
[rxb
->nr_subframes
++] = sub_skb
;
862 if(rxb
->nr_subframes
>= MAX_SUBFRAME_COUNT
) {
863 IEEE80211_DEBUG_RX("ParseSubframe(): Too many Subframes! Packets dropped!\n");
866 skb_pull(skb
,nSubframe_Length
);
869 nPadding_Length
= 4 - ((nSubframe_Length
+ ETHERNET_HEADER_SIZE
) % 4);
870 if(nPadding_Length
== 4) {
874 if(skb
->len
< nPadding_Length
) {
878 skb_pull(skb
,nPadding_Length
);
884 //{just for debug added by david
885 //printk("AMSDU::rxb->nr_subframes = %d\n",rxb->nr_subframes);
887 return rxb
->nr_subframes
;
891 /* All received frames are sent to this function. @skb contains the frame in
892 * IEEE 802.11 format, i.e., in the format it was sent over air.
893 * This function is called only as a tasklet (software IRQ). */
894 int ieee80211_rx(struct ieee80211_device
*ieee
, struct sk_buff
*skb
,
895 struct ieee80211_rx_stats
*rx_stats
)
897 struct net_device
*dev
= ieee
->dev
;
898 struct ieee80211_hdr_4addr
*hdr
;
899 //struct ieee80211_hdr_3addrqos *hdr;
902 u16 fc
, type
, stype
, sc
;
903 struct net_device_stats
*stats
;
907 //added by amy for reorder
910 PRX_TS_RECORD pTS
= NULL
;
911 //bool bIsAggregateFrame = false;
912 //added by amy for reorder
914 struct net_device
*wds
= NULL
;
915 struct sk_buff
*skb2
= NULL
;
916 struct net_device
*wds
= NULL
;
917 int frame_authorized
= 0;
918 int from_assoc_ap
= 0;
925 struct ieee80211_crypt_data
*crypt
= NULL
;
929 struct ieee80211_rxb
* rxb
= NULL
;
930 // cheat the the hdr type
931 hdr
= (struct ieee80211_hdr_4addr
*)skb
->data
;
932 stats
= &ieee
->stats
;
935 printk(KERN_INFO
"%s: SKB length < 10\n",
940 fc
= le16_to_cpu(hdr
->frame_ctl
);
941 type
= WLAN_FC_GET_TYPE(fc
);
942 stype
= WLAN_FC_GET_STYPE(fc
);
943 sc
= le16_to_cpu(hdr
->seq_ctl
);
945 frag
= WLAN_GET_SEQ_FRAG(sc
);
946 hdrlen
= ieee80211_get_hdrlen(fc
);
948 if(HTCCheck(ieee
, skb
->data
))
951 printk("find HTCControl\n");
953 rx_stats
->bContainHTC
= 1;
956 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
958 #if WIRELESS_EXT > 15
959 /* Put this code here so that we avoid duplicating it in all
960 * Rx paths. - Jean II */
961 #ifdef IW_WIRELESS_SPY /* defined in iw_handler.h */
962 /* If spy monitoring on */
963 if (iface
->spy_data
.spy_number
> 0) {
964 struct iw_quality wstats
;
965 wstats
.level
= rx_stats
->rssi
;
966 wstats
.noise
= rx_stats
->noise
;
967 wstats
.updated
= 6; /* No qual value */
968 /* Update spy records */
969 wireless_spy_update(dev
, hdr
->addr2
, &wstats
);
971 #endif /* IW_WIRELESS_SPY */
972 #endif /* WIRELESS_EXT > 15 */
973 hostap_update_rx_stats(local
->ap
, hdr
, rx_stats
);
976 #if WIRELESS_EXT > 15
977 if (ieee
->iw_mode
== IW_MODE_MONITOR
) {
978 ieee80211_monitor_rx(ieee
, skb
, rx_stats
);
980 stats
->rx_bytes
+= skb
->len
;
984 if (ieee
->host_decrypt
) {
986 if (skb
->len
>= hdrlen
+ 3)
987 idx
= skb
->data
[hdrlen
+ 3] >> 6;
988 crypt
= ieee
->crypt
[idx
];
992 /* Use station specific key to override default keys if the
993 * receiver address is a unicast address ("individual RA"). If
994 * bcrx_sta_key parameter is set, station specific key is used
995 * even with broad/multicast targets (this is against IEEE
996 * 802.11, but makes it easier to use different keys with
997 * stations that do not support WEP key mapping). */
999 if (!(hdr
->addr1
[0] & 0x01) || local
->bcrx_sta_key
)
1000 (void) hostap_handle_sta_crypto(local
, hdr
, &crypt
,
1004 /* allow NULL decrypt to indicate an station specific override
1005 * for default encryption */
1006 if (crypt
&& (crypt
->ops
== NULL
||
1007 crypt
->ops
->decrypt_mpdu
== NULL
))
1010 if (!crypt
&& (fc
& IEEE80211_FCTL_WEP
)) {
1011 /* This seems to be triggered by some (multicast?)
1012 * frames from other than current BSS, so just drop the
1013 * frames silently instead of filling system log with
1015 IEEE80211_DEBUG_DROP("Decryption failed (not set)"
1018 ieee
->ieee_stats
.rx_discards_undecryptable
++;
1023 if (skb
->len
< IEEE80211_DATA_HDR3_LEN
)
1026 // if QoS enabled, should check the sequence for each of the AC
1027 if( (ieee
->pHTInfo
->bCurRxReorderEnable
== false) || !ieee
->current_network
.qos_data
.active
|| !IsDataFrame(skb
->data
) || IsLegacyDataFrame(skb
->data
)){
1028 if (is_duplicate_packet(ieee
, hdr
))
1034 PRX_TS_RECORD pRxTS
= NULL
;
1035 //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): QOS ENABLE AND RECEIVE QOS DATA , we will get Ts, tid:%d\n",__FUNCTION__, tid);
1038 (PTS_COMMON_INFO
*) &pRxTS
,
1040 (u8
)Frame_QoSTID((u8
*)(skb
->data
)),
1045 // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): pRxTS->RxLastFragNum is %d,frag is %d,pRxTS->RxLastSeqNum is %d,seq is %d\n",__FUNCTION__,pRxTS->RxLastFragNum,frag,pRxTS->RxLastSeqNum,WLAN_GET_SEQ_SEQ(sc));
1046 if( (fc
& (1<<11)) &&
1047 (frag
== pRxTS
->RxLastFragNum
) &&
1048 (WLAN_GET_SEQ_SEQ(sc
) == pRxTS
->RxLastSeqNum
) )
1054 pRxTS
->RxLastFragNum
= frag
;
1055 pRxTS
->RxLastSeqNum
= WLAN_GET_SEQ_SEQ(sc
);
1060 IEEE80211_DEBUG(IEEE80211_DL_ERR
, "%s(): No TS!! Skip the check!!\n",__FUNCTION__
);
1064 if (type
== IEEE80211_FTYPE_MGMT
) {
1067 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
1068 if (ieee80211_rx_frame_mgmt(ieee
, skb
, rx_stats
, type
, stype
))
1074 /* Data frame - extract src/dst addresses */
1075 switch (fc
& (IEEE80211_FCTL_FROMDS
| IEEE80211_FCTL_TODS
)) {
1076 case IEEE80211_FCTL_FROMDS
:
1077 memcpy(dst
, hdr
->addr1
, ETH_ALEN
);
1078 memcpy(src
, hdr
->addr3
, ETH_ALEN
);
1079 memcpy(bssid
, hdr
->addr2
, ETH_ALEN
);
1081 case IEEE80211_FCTL_TODS
:
1082 memcpy(dst
, hdr
->addr3
, ETH_ALEN
);
1083 memcpy(src
, hdr
->addr2
, ETH_ALEN
);
1084 memcpy(bssid
, hdr
->addr1
, ETH_ALEN
);
1086 case IEEE80211_FCTL_FROMDS
| IEEE80211_FCTL_TODS
:
1087 if (skb
->len
< IEEE80211_DATA_HDR4_LEN
)
1089 memcpy(dst
, hdr
->addr3
, ETH_ALEN
);
1090 memcpy(src
, hdr
->addr4
, ETH_ALEN
);
1091 memcpy(bssid
, ieee
->current_network
.bssid
, ETH_ALEN
);
1094 memcpy(dst
, hdr
->addr1
, ETH_ALEN
);
1095 memcpy(src
, hdr
->addr2
, ETH_ALEN
);
1096 memcpy(bssid
, hdr
->addr3
, ETH_ALEN
);
1101 if (hostap_rx_frame_wds(ieee
, hdr
, fc
, &wds
))
1104 skb
->dev
= dev
= wds
;
1105 stats
= hostap_get_stats(dev
);
1108 if (ieee
->iw_mode
== IW_MODE_MASTER
&& !wds
&&
1109 (fc
& (IEEE80211_FCTL_TODS
| IEEE80211_FCTL_FROMDS
)) == IEEE80211_FCTL_FROMDS
&&
1111 memcmp(hdr
->addr2
, ieee
->assoc_ap_addr
, ETH_ALEN
) == 0) {
1112 /* Frame from BSSID of the AP for which we are a client */
1113 skb
->dev
= dev
= ieee
->stadev
;
1114 stats
= hostap_get_stats(dev
);
1119 dev
->last_rx
= jiffies
;
1122 if ((ieee
->iw_mode
== IW_MODE_MASTER
||
1123 ieee
->iw_mode
== IW_MODE_REPEAT
) &&
1125 switch (hostap_handle_sta_rx(ieee
, dev
, skb
, rx_stats
,
1127 case AP_RX_CONTINUE_NOT_AUTHORIZED
:
1128 frame_authorized
= 0;
1130 case AP_RX_CONTINUE
:
1131 frame_authorized
= 1;
1140 //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
1141 /* Nullfunc frames may have PS-bit set, so they must be passed to
1142 * hostap_handle_sta_rx() before being dropped here. */
1143 if (stype
!= IEEE80211_STYPE_DATA
&&
1144 stype
!= IEEE80211_STYPE_DATA_CFACK
&&
1145 stype
!= IEEE80211_STYPE_DATA_CFPOLL
&&
1146 stype
!= IEEE80211_STYPE_DATA_CFACKPOLL
&&
1147 stype
!= IEEE80211_STYPE_QOS_DATA
//add by David,2006.8.4
1149 if (stype
!= IEEE80211_STYPE_NULLFUNC
)
1150 IEEE80211_DEBUG_DROP(
1151 "RX: dropped data frame "
1152 "with no data (type=0x%02x, "
1153 "subtype=0x%02x, len=%d)\n",
1154 type
, stype
, skb
->len
);
1157 if (memcmp(bssid
, ieee
->current_network
.bssid
, ETH_ALEN
))
1160 /* skb: hdr + (possibly fragmented, possibly encrypted) payload */
1162 if (ieee
->host_decrypt
&& (fc
& IEEE80211_FCTL_WEP
) &&
1163 (keyidx
= ieee80211_rx_frame_decrypt(ieee
, skb
, crypt
)) < 0)
1165 printk("decrypt frame error\n");
1170 hdr
= (struct ieee80211_hdr_4addr
*) skb
->data
;
1172 /* skb: hdr + (possibly fragmented) plaintext payload */
1173 // PR: FIXME: hostap has additional conditions in the "if" below:
1174 // ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
1175 if ((frag
!= 0 || (fc
& IEEE80211_FCTL_MOREFRAGS
))) {
1177 struct sk_buff
*frag_skb
= ieee80211_frag_cache_get(ieee
, hdr
);
1178 IEEE80211_DEBUG_FRAG("Rx Fragment received (%u)\n", frag
);
1181 IEEE80211_DEBUG(IEEE80211_DL_RX
| IEEE80211_DL_FRAG
,
1182 "Rx cannot get skb from fragment "
1183 "cache (morefrag=%d seq=%u frag=%u)\n",
1184 (fc
& IEEE80211_FCTL_MOREFRAGS
) != 0,
1185 WLAN_GET_SEQ_SEQ(sc
), frag
);
1192 if (frag_skb
->tail
+ flen
> frag_skb
->end
) {
1193 printk(KERN_WARNING
"%s: host decrypted and "
1194 "reassembled frame did not fit skb\n",
1196 ieee80211_frag_cache_invalidate(ieee
, hdr
);
1201 /* copy first fragment (including full headers) into
1202 * beginning of the fragment cache skb */
1203 memcpy(skb_put(frag_skb
, flen
), skb
->data
, flen
);
1205 /* append frame payload to the end of the fragment
1207 memcpy(skb_put(frag_skb
, flen
), skb
->data
+ hdrlen
,
1210 dev_kfree_skb_any(skb
);
1213 if (fc
& IEEE80211_FCTL_MOREFRAGS
) {
1214 /* more fragments expected - leave the skb in fragment
1215 * cache for now; it will be delivered to upper layers
1216 * after all fragments have been received */
1220 /* this was the last fragment and the frame will be
1221 * delivered, so remove skb from fragment cache */
1223 hdr
= (struct ieee80211_hdr_4addr
*) skb
->data
;
1224 ieee80211_frag_cache_invalidate(ieee
, hdr
);
1227 /* skb: hdr + (possible reassembled) full MSDU payload; possibly still
1228 * encrypted/authenticated */
1229 if (ieee
->host_decrypt
&& (fc
& IEEE80211_FCTL_WEP
) &&
1230 ieee80211_rx_frame_decrypt_msdu(ieee
, skb
, keyidx
, crypt
))
1232 printk("==>decrypt msdu error\n");
1236 //added by amy for AP roaming
1237 ieee
->LinkDetectInfo
.NumRecvDataInPeriod
++;
1238 ieee
->LinkDetectInfo
.NumRxOkInPeriod
++;
1240 hdr
= (struct ieee80211_hdr_4addr
*) skb
->data
;
1241 if (crypt
&& !(fc
& IEEE80211_FCTL_WEP
) && !ieee
->open_wep
) {
1242 if (/*ieee->ieee802_1x &&*/
1243 ieee80211_is_eapol_frame(ieee
, skb
, hdrlen
)) {
1245 #ifdef CONFIG_IEEE80211_DEBUG
1246 /* pass unencrypted EAPOL frames even if encryption is
1248 struct eapol
*eap
= (struct eapol
*)(skb
->data
+
1250 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1251 eap_get_type(eap
->type
));
1254 IEEE80211_DEBUG_DROP(
1255 "encryption configured, but RX "
1256 "frame not encrypted (SA=%pM)\n",
1262 #ifdef CONFIG_IEEE80211_DEBUG
1263 if (crypt
&& !(fc
& IEEE80211_FCTL_WEP
) &&
1264 ieee80211_is_eapol_frame(ieee
, skb
, hdrlen
)) {
1265 struct eapol
*eap
= (struct eapol
*)(skb
->data
+
1267 IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1268 eap_get_type(eap
->type
));
1272 if (crypt
&& !(fc
& IEEE80211_FCTL_WEP
) && !ieee
->open_wep
&&
1273 !ieee80211_is_eapol_frame(ieee
, skb
, hdrlen
)) {
1274 IEEE80211_DEBUG_DROP(
1275 "dropped unencrypted RX data "
1277 " (drop_unencrypted=1)\n",
1282 if(ieee80211_is_eapol_frame(ieee, skb, hdrlen)) {
1283 printk(KERN_WARNING "RX: IEEE802.1X EPAOL frame!\n");
1286 //added by amy for reorder
1287 if(ieee
->current_network
.qos_data
.active
&& IsQoSDataFrame(skb
->data
)
1288 && !is_multicast_ether_addr(hdr
->addr1
) && !is_broadcast_ether_addr(hdr
->addr1
))
1290 TID
= Frame_QoSTID(skb
->data
);
1291 SeqNum
= WLAN_GET_SEQ_SEQ(sc
);
1292 GetTs(ieee
,(PTS_COMMON_INFO
*) &pTS
,hdr
->addr2
,TID
,RX_DIR
,true);
1293 if(TID
!=0 && TID
!=3)
1295 ieee
->bis_any_nonbepkts
= true;
1298 //added by amy for reorder
1299 /* skb: hdr + (possible reassembled) full plaintext payload */
1300 payload
= skb
->data
+ hdrlen
;
1301 //ethertype = (payload[6] << 8) | payload[7];
1302 rxb
= kmalloc(sizeof(struct ieee80211_rxb
), GFP_ATOMIC
);
1305 IEEE80211_DEBUG(IEEE80211_DL_ERR
,"%s(): kmalloc rxb error\n",__FUNCTION__
);
1308 /* to parse amsdu packets */
1309 /* qos data packets & reserved bit is 1 */
1310 if(parse_subframe(skb
,rx_stats
,rxb
,src
,dst
) == 0) {
1311 /* only to free rxb, and not submit the packets to upper layer */
1312 for(i
=0; i
< rxb
->nr_subframes
; i
++) {
1313 dev_kfree_skb(rxb
->subframes
[i
]);
1320 //added by amy for reorder
1321 if(ieee
->pHTInfo
->bCurRxReorderEnable
== false ||pTS
== NULL
){
1322 //added by amy for reorder
1323 for(i
= 0; i
<rxb
->nr_subframes
; i
++) {
1324 struct sk_buff
*sub_skb
= rxb
->subframes
[i
];
1327 /* convert hdr + possible LLC headers into Ethernet header */
1328 ethertype
= (sub_skb
->data
[6] << 8) | sub_skb
->data
[7];
1329 if (sub_skb
->len
>= 8 &&
1330 ((memcmp(sub_skb
->data
, rfc1042_header
, SNAP_SIZE
) == 0 &&
1331 ethertype
!= ETH_P_AARP
&& ethertype
!= ETH_P_IPX
) ||
1332 memcmp(sub_skb
->data
, bridge_tunnel_header
, SNAP_SIZE
) == 0)) {
1333 /* remove RFC1042 or Bridge-Tunnel encapsulation and
1334 * replace EtherType */
1335 skb_pull(sub_skb
, SNAP_SIZE
);
1336 memcpy(skb_push(sub_skb
, ETH_ALEN
), src
, ETH_ALEN
);
1337 memcpy(skb_push(sub_skb
, ETH_ALEN
), dst
, ETH_ALEN
);
1340 /* Leave Ethernet header part of hdr and full payload */
1341 len
= htons(sub_skb
->len
);
1342 memcpy(skb_push(sub_skb
, 2), &len
, 2);
1343 memcpy(skb_push(sub_skb
, ETH_ALEN
), src
, ETH_ALEN
);
1344 memcpy(skb_push(sub_skb
, ETH_ALEN
), dst
, ETH_ALEN
);
1347 stats
->rx_packets
++;
1348 stats
->rx_bytes
+= sub_skb
->len
;
1349 if(is_multicast_ether_addr(dst
)) {
1353 /* Indicat the packets to upper layer */
1354 //printk("0skb_len(%d)\n", skb->len);
1355 sub_skb
->protocol
= eth_type_trans(sub_skb
, dev
);
1356 memset(sub_skb
->cb
, 0, sizeof(sub_skb
->cb
));
1358 sub_skb
->ip_summed
= CHECKSUM_NONE
; /* 802.11 crc not sufficient */
1359 //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */
1360 ieee
->last_rx_ps_time
= jiffies
;
1361 //printk("1skb_len(%d)\n", skb->len);
1371 IEEE80211_DEBUG(IEEE80211_DL_REORDER
,"%s(): REORDER ENABLE AND PTS not NULL, and we will enter RxReorderIndicatePacket()\n",__FUNCTION__
);
1372 RxReorderIndicatePacket(ieee
, rxb
, pTS
, SeqNum
);
1381 hostap_handle_sta_release(sta
);
1388 stats
->rx_dropped
++;
1390 /* Returning 0 indicates to caller that we have not handled the SKB--
1391 * so it is still allocated and can be used again by underlying
1392 * hardware as a DMA target */
1396 #define MGMT_FRAME_FIXED_PART_LENGTH 0x24
1398 static u8 qos_oui
[QOS_OUI_LEN
] = { 0x00, 0x50, 0xF2 };
1401 * Make the structure we read from the beacon packet to have
1404 static int ieee80211_verify_qos_info(struct ieee80211_qos_information_element
1405 *info_element
, int sub_type
)
1408 if (info_element
->qui_subtype
!= sub_type
)
1410 if (memcmp(info_element
->qui
, qos_oui
, QOS_OUI_LEN
))
1412 if (info_element
->qui_type
!= QOS_OUI_TYPE
)
1414 if (info_element
->version
!= QOS_VERSION_1
)
1422 * Parse a QoS parameter element
1424 static int ieee80211_read_qos_param_element(struct ieee80211_qos_parameter_info
1425 *element_param
, struct ieee80211_info_element
1429 u16 size
= sizeof(struct ieee80211_qos_parameter_info
) - 2;
1431 if ((info_element
== NULL
) || (element_param
== NULL
))
1434 if (info_element
->id
== QOS_ELEMENT_ID
&& info_element
->len
== size
) {
1435 memcpy(element_param
->info_element
.qui
, info_element
->data
,
1437 element_param
->info_element
.elementID
= info_element
->id
;
1438 element_param
->info_element
.length
= info_element
->len
;
1442 ret
= ieee80211_verify_qos_info(&element_param
->info_element
,
1443 QOS_OUI_PARAM_SUB_TYPE
);
1448 * Parse a QoS information element
1450 static int ieee80211_read_qos_info_element(struct
1451 ieee80211_qos_information_element
1452 *element_info
, struct ieee80211_info_element
1456 u16 size
= sizeof(struct ieee80211_qos_information_element
) - 2;
1458 if (element_info
== NULL
)
1460 if (info_element
== NULL
)
1463 if ((info_element
->id
== QOS_ELEMENT_ID
) && (info_element
->len
== size
)) {
1464 memcpy(element_info
->qui
, info_element
->data
,
1466 element_info
->elementID
= info_element
->id
;
1467 element_info
->length
= info_element
->len
;
1472 ret
= ieee80211_verify_qos_info(element_info
,
1473 QOS_OUI_INFO_SUB_TYPE
);
1479 * Write QoS parameters from the ac parameters.
1481 static int ieee80211_qos_convert_ac_to_parameters(struct
1482 ieee80211_qos_parameter_info
1484 ieee80211_qos_parameters
1489 struct ieee80211_qos_ac_parameter
*ac_params
;
1494 for (i
= 0; i
< QOS_QUEUE_NUM
; i
++) {
1495 ac_params
= &(param_elm
->ac_params_record
[i
]);
1497 aci
= (ac_params
->aci_aifsn
& 0x60) >> 5;
1499 if(aci
>= QOS_QUEUE_NUM
)
1501 qos_param
->aifs
[aci
] = (ac_params
->aci_aifsn
) & 0x0f;
1503 /* WMM spec P.11: The minimum value for AIFSN shall be 2 */
1504 qos_param
->aifs
[aci
] = (qos_param
->aifs
[aci
] < 2) ? 2:qos_param
->aifs
[aci
];
1506 qos_param
->cw_min
[aci
] = ac_params
->ecw_min_max
& 0x0F;
1508 qos_param
->cw_max
[aci
] = (ac_params
->ecw_min_max
& 0xF0) >> 4;
1510 qos_param
->flag
[aci
] =
1511 (ac_params
->aci_aifsn
& 0x10) ? 0x01 : 0x00;
1512 qos_param
->tx_op_limit
[aci
] = le16_to_cpu(ac_params
->tx_op_limit
);
1518 * we have a generic data element which it may contain QoS information or
1519 * parameters element. check the information element length to decide
1520 * which type to read
1522 static int ieee80211_parse_qos_info_param_IE(struct ieee80211_info_element
1524 struct ieee80211_network
*network
)
1527 struct ieee80211_qos_parameters
*qos_param
= NULL
;
1528 struct ieee80211_qos_information_element qos_info_element
;
1530 rc
= ieee80211_read_qos_info_element(&qos_info_element
, info_element
);
1533 network
->qos_data
.param_count
= qos_info_element
.ac_info
& 0x0F;
1534 network
->flags
|= NETWORK_HAS_QOS_INFORMATION
;
1536 struct ieee80211_qos_parameter_info param_element
;
1538 rc
= ieee80211_read_qos_param_element(¶m_element
,
1541 qos_param
= &(network
->qos_data
.parameters
);
1542 ieee80211_qos_convert_ac_to_parameters(¶m_element
,
1544 network
->flags
|= NETWORK_HAS_QOS_PARAMETERS
;
1545 network
->qos_data
.param_count
=
1546 param_element
.info_element
.ac_info
& 0x0F;
1551 IEEE80211_DEBUG_QOS("QoS is supported\n");
1552 network
->qos_data
.supported
= 1;
1557 #ifdef CONFIG_IEEE80211_DEBUG
1558 #define MFIE_STRING(x) case MFIE_TYPE_ ##x: return #x
1560 static const char *get_info_element_string(u16 id
)
1565 MFIE_STRING(FH_SET
);
1566 MFIE_STRING(DS_SET
);
1567 MFIE_STRING(CF_SET
);
1569 MFIE_STRING(IBSS_SET
);
1570 MFIE_STRING(COUNTRY
);
1571 MFIE_STRING(HOP_PARAMS
);
1572 MFIE_STRING(HOP_TABLE
);
1573 MFIE_STRING(REQUEST
);
1574 MFIE_STRING(CHALLENGE
);
1575 MFIE_STRING(POWER_CONSTRAINT
);
1576 MFIE_STRING(POWER_CAPABILITY
);
1577 MFIE_STRING(TPC_REQUEST
);
1578 MFIE_STRING(TPC_REPORT
);
1579 MFIE_STRING(SUPP_CHANNELS
);
1581 MFIE_STRING(MEASURE_REQUEST
);
1582 MFIE_STRING(MEASURE_REPORT
);
1584 MFIE_STRING(IBSS_DFS
);
1585 // MFIE_STRING(ERP_INFO);
1587 MFIE_STRING(RATES_EX
);
1588 MFIE_STRING(GENERIC
);
1589 MFIE_STRING(QOS_PARAMETER
);
1596 static inline void ieee80211_extract_country_ie(
1597 struct ieee80211_device
*ieee
,
1598 struct ieee80211_info_element
*info_element
,
1599 struct ieee80211_network
*network
,
1603 if(IS_DOT11D_ENABLE(ieee
))
1605 if(info_element
->len
!= 0)
1607 memcpy(network
->CountryIeBuf
, info_element
->data
, info_element
->len
);
1608 network
->CountryIeLen
= info_element
->len
;
1610 if(!IS_COUNTRY_IE_VALID(ieee
))
1612 Dot11d_UpdateCountryIe(ieee
, addr2
, info_element
->len
, info_element
->data
);
1617 // 070305, rcnjko: I update country IE watch dog here because
1618 // some AP (e.g. Cisco 1242) don't include country IE in their
1619 // probe response frame.
1621 if(IS_EQUAL_CIE_SRC(ieee
, addr2
) )
1623 UPDATE_CIE_WATCHDOG(ieee
);
1629 int ieee80211_parse_info_param(struct ieee80211_device
*ieee
,
1630 struct ieee80211_info_element
*info_element
,
1632 struct ieee80211_network
*network
,
1633 struct ieee80211_rx_stats
*stats
)
1637 u16 tmp_htcap_len
=0;
1638 u16 tmp_htinfo_len
=0;
1639 u16 ht_realtek_agg_len
=0;
1640 u8 ht_realtek_agg_buf
[MAX_IE_LEN
];
1641 // u16 broadcom_len = 0;
1642 #ifdef CONFIG_IEEE80211_DEBUG
1647 while (length
>= sizeof(*info_element
)) {
1648 if (sizeof(*info_element
) + info_element
->len
> length
) {
1649 IEEE80211_DEBUG_MGMT("Info elem: parse failed: "
1650 "info_element->len + 2 > left : "
1651 "info_element->len+2=%zd left=%d, id=%d.\n",
1653 sizeof(*info_element
),
1654 length
, info_element
->id
);
1655 /* We stop processing but don't return an error here
1656 * because some misbehaviour APs break this rule. ie.
1657 * Orinoco AP1000. */
1661 switch (info_element
->id
) {
1662 case MFIE_TYPE_SSID
:
1663 if (ieee80211_is_empty_essid(info_element
->data
,
1664 info_element
->len
)) {
1665 network
->flags
|= NETWORK_EMPTY_ESSID
;
1669 network
->ssid_len
= min(info_element
->len
,
1670 (u8
) IW_ESSID_MAX_SIZE
);
1671 memcpy(network
->ssid
, info_element
->data
, network
->ssid_len
);
1672 if (network
->ssid_len
< IW_ESSID_MAX_SIZE
)
1673 memset(network
->ssid
+ network
->ssid_len
, 0,
1674 IW_ESSID_MAX_SIZE
- network
->ssid_len
);
1676 IEEE80211_DEBUG_MGMT("MFIE_TYPE_SSID: '%s' len=%d.\n",
1677 network
->ssid
, network
->ssid_len
);
1680 case MFIE_TYPE_RATES
:
1681 #ifdef CONFIG_IEEE80211_DEBUG
1684 network
->rates_len
= min(info_element
->len
,
1686 for (i
= 0; i
< network
->rates_len
; i
++) {
1687 network
->rates
[i
] = info_element
->data
[i
];
1688 #ifdef CONFIG_IEEE80211_DEBUG
1689 p
+= snprintf(p
, sizeof(rates_str
) -
1690 (p
- rates_str
), "%02X ",
1693 if (ieee80211_is_ofdm_rate
1694 (info_element
->data
[i
])) {
1695 network
->flags
|= NETWORK_HAS_OFDM
;
1696 if (info_element
->data
[i
] &
1697 IEEE80211_BASIC_RATE_MASK
)
1703 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES: '%s' (%d)\n",
1704 rates_str
, network
->rates_len
);
1707 case MFIE_TYPE_RATES_EX
:
1708 #ifdef CONFIG_IEEE80211_DEBUG
1711 network
->rates_ex_len
= min(info_element
->len
,
1712 MAX_RATES_EX_LENGTH
);
1713 for (i
= 0; i
< network
->rates_ex_len
; i
++) {
1714 network
->rates_ex
[i
] = info_element
->data
[i
];
1715 #ifdef CONFIG_IEEE80211_DEBUG
1716 p
+= snprintf(p
, sizeof(rates_str
) -
1717 (p
- rates_str
), "%02X ",
1720 if (ieee80211_is_ofdm_rate
1721 (info_element
->data
[i
])) {
1722 network
->flags
|= NETWORK_HAS_OFDM
;
1723 if (info_element
->data
[i
] &
1724 IEEE80211_BASIC_RATE_MASK
)
1730 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES_EX: '%s' (%d)\n",
1731 rates_str
, network
->rates_ex_len
);
1734 case MFIE_TYPE_DS_SET
:
1735 IEEE80211_DEBUG_MGMT("MFIE_TYPE_DS_SET: %d\n",
1736 info_element
->data
[0]);
1737 network
->channel
= info_element
->data
[0];
1740 case MFIE_TYPE_FH_SET
:
1741 IEEE80211_DEBUG_MGMT("MFIE_TYPE_FH_SET: ignored\n");
1744 case MFIE_TYPE_CF_SET
:
1745 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CF_SET: ignored\n");
1749 if(info_element
->len
< 4)
1752 network
->tim
.tim_count
= info_element
->data
[0];
1753 network
->tim
.tim_period
= info_element
->data
[1];
1755 network
->dtim_period
= info_element
->data
[1];
1756 if(ieee
->state
!= IEEE80211_LINKED
)
1759 network
->last_dtim_sta_time
[0] = stats
->mac_time
[0];
1760 network
->last_dtim_sta_time
[1] = stats
->mac_time
[1];
1762 network
->dtim_data
= IEEE80211_DTIM_VALID
;
1764 if(info_element
->data
[0] != 0)
1767 if(info_element
->data
[2] & 1)
1768 network
->dtim_data
|= IEEE80211_DTIM_MBCAST
;
1770 offset
= (info_element
->data
[2] >> 1)*2;
1772 //printk("offset1:%x aid:%x\n",offset, ieee->assoc_id);
1774 if(ieee
->assoc_id
< 8*offset
||
1775 ieee
->assoc_id
> 8*(offset
+ info_element
->len
-3))
1779 offset
= (ieee
->assoc_id
/ 8) - offset
;// + ((aid % 8)? 0 : 1) ;
1781 if(info_element
->data
[3+offset
] & (1<<(ieee
->assoc_id
%8)))
1782 network
->dtim_data
|= IEEE80211_DTIM_UCAST
;
1784 //IEEE80211_DEBUG_MGMT("MFIE_TYPE_TIM: partially ignored\n");
1788 network
->erp_value
= info_element
->data
[0];
1789 network
->flags
|= NETWORK_HAS_ERP_VALUE
;
1790 IEEE80211_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n",
1791 network
->erp_value
);
1793 case MFIE_TYPE_IBSS_SET
:
1794 network
->atim_window
= info_element
->data
[0];
1795 IEEE80211_DEBUG_MGMT("MFIE_TYPE_IBSS_SET: %d\n",
1796 network
->atim_window
);
1799 case MFIE_TYPE_CHALLENGE
:
1800 IEEE80211_DEBUG_MGMT("MFIE_TYPE_CHALLENGE: ignored\n");
1803 case MFIE_TYPE_GENERIC
:
1804 IEEE80211_DEBUG_MGMT("MFIE_TYPE_GENERIC: %d bytes\n",
1806 if (!ieee80211_parse_qos_info_param_IE(info_element
,
1810 if (info_element
->len
>= 4 &&
1811 info_element
->data
[0] == 0x00 &&
1812 info_element
->data
[1] == 0x50 &&
1813 info_element
->data
[2] == 0xf2 &&
1814 info_element
->data
[3] == 0x01) {
1815 network
->wpa_ie_len
= min(info_element
->len
+ 2,
1817 memcpy(network
->wpa_ie
, info_element
,
1818 network
->wpa_ie_len
);
1823 if (info_element
->len
== 7 &&
1824 info_element
->data
[0] == 0x00 &&
1825 info_element
->data
[1] == 0xe0 &&
1826 info_element
->data
[2] == 0x4c &&
1827 info_element
->data
[3] == 0x01 &&
1828 info_element
->data
[4] == 0x02) {
1829 network
->Turbo_Enable
= 1;
1833 //for HTcap and HTinfo parameters
1834 if(tmp_htcap_len
== 0){
1835 if(info_element
->len
>= 4 &&
1836 info_element
->data
[0] == 0x00 &&
1837 info_element
->data
[1] == 0x90 &&
1838 info_element
->data
[2] == 0x4c &&
1839 info_element
->data
[3] == 0x033){
1841 tmp_htcap_len
= min(info_element
->len
,(u8
)MAX_IE_LEN
);
1842 if(tmp_htcap_len
!= 0){
1843 network
->bssht
.bdHTSpecVer
= HT_SPEC_VER_EWC
;
1844 network
->bssht
.bdHTCapLen
= tmp_htcap_len
> sizeof(network
->bssht
.bdHTCapBuf
)?\
1845 sizeof(network
->bssht
.bdHTCapBuf
):tmp_htcap_len
;
1846 memcpy(network
->bssht
.bdHTCapBuf
,info_element
->data
,network
->bssht
.bdHTCapLen
);
1849 if(tmp_htcap_len
!= 0)
1850 network
->bssht
.bdSupportHT
= true;
1852 network
->bssht
.bdSupportHT
= false;
1856 if(tmp_htinfo_len
== 0){
1857 if(info_element
->len
>= 4 &&
1858 info_element
->data
[0] == 0x00 &&
1859 info_element
->data
[1] == 0x90 &&
1860 info_element
->data
[2] == 0x4c &&
1861 info_element
->data
[3] == 0x034){
1863 tmp_htinfo_len
= min(info_element
->len
,(u8
)MAX_IE_LEN
);
1864 if(tmp_htinfo_len
!= 0){
1865 network
->bssht
.bdHTSpecVer
= HT_SPEC_VER_EWC
;
1867 network
->bssht
.bdHTInfoLen
= tmp_htinfo_len
> sizeof(network
->bssht
.bdHTInfoBuf
)?\
1868 sizeof(network
->bssht
.bdHTInfoBuf
):tmp_htinfo_len
;
1869 memcpy(network
->bssht
.bdHTInfoBuf
,info_element
->data
,network
->bssht
.bdHTInfoLen
);
1877 if(ieee
->aggregation
){
1878 if(network
->bssht
.bdSupportHT
){
1879 if(info_element
->len
>= 4 &&
1880 info_element
->data
[0] == 0x00 &&
1881 info_element
->data
[1] == 0xe0 &&
1882 info_element
->data
[2] == 0x4c &&
1883 info_element
->data
[3] == 0x02){
1885 ht_realtek_agg_len
= min(info_element
->len
,(u8
)MAX_IE_LEN
);
1886 memcpy(ht_realtek_agg_buf
,info_element
->data
,info_element
->len
);
1889 if(ht_realtek_agg_len
>= 5){
1890 network
->bssht
.bdRT2RTAggregation
= true;
1892 if((ht_realtek_agg_buf
[4] == 1) && (ht_realtek_agg_buf
[5] & 0x02))
1893 network
->bssht
.bdRT2RTLongSlotTime
= true;
1899 //if(tmp_htcap_len !=0 || tmp_htinfo_len != 0)
1901 if((info_element
->len
>= 3 &&
1902 info_element
->data
[0] == 0x00 &&
1903 info_element
->data
[1] == 0x05 &&
1904 info_element
->data
[2] == 0xb5) ||
1905 (info_element
->len
>= 3 &&
1906 info_element
->data
[0] == 0x00 &&
1907 info_element
->data
[1] == 0x0a &&
1908 info_element
->data
[2] == 0xf7) ||
1909 (info_element
->len
>= 3 &&
1910 info_element
->data
[0] == 0x00 &&
1911 info_element
->data
[1] == 0x10 &&
1912 info_element
->data
[2] == 0x18)){
1914 network
->broadcom_cap_exist
= true;
1918 if(info_element
->len
>= 3 &&
1919 info_element
->data
[0] == 0x00 &&
1920 info_element
->data
[1] == 0x0c &&
1921 info_element
->data
[2] == 0x43)
1923 network
->ralink_cap_exist
= true;
1926 network
->ralink_cap_exist
= false;
1927 //added by amy for atheros AP
1928 if((info_element
->len
>= 3 &&
1929 info_element
->data
[0] == 0x00 &&
1930 info_element
->data
[1] == 0x03 &&
1931 info_element
->data
[2] == 0x7f) ||
1932 (info_element
->len
>= 3 &&
1933 info_element
->data
[0] == 0x00 &&
1934 info_element
->data
[1] == 0x13 &&
1935 info_element
->data
[2] == 0x74))
1937 printk("========>%s(): athros AP is exist\n",__FUNCTION__
);
1938 network
->atheros_cap_exist
= true;
1941 network
->atheros_cap_exist
= false;
1943 if(info_element
->len
>= 3 &&
1944 info_element
->data
[0] == 0x00 &&
1945 info_element
->data
[1] == 0x40 &&
1946 info_element
->data
[2] == 0x96)
1948 network
->cisco_cap_exist
= true;
1951 network
->cisco_cap_exist
= false;
1952 //added by amy for LEAP of cisco
1953 if(info_element
->len
> 4 &&
1954 info_element
->data
[0] == 0x00 &&
1955 info_element
->data
[1] == 0x40 &&
1956 info_element
->data
[2] == 0x96 &&
1957 info_element
->data
[3] == 0x01)
1959 if(info_element
->len
== 6)
1961 memcpy(network
->CcxRmState
, &info_element
[4], 2);
1962 if(network
->CcxRmState
[0] != 0)
1964 network
->bCcxRmEnable
= true;
1967 network
->bCcxRmEnable
= false;
1969 // CCXv4 Table 59-1 MBSSID Masks.
1971 network
->MBssidMask
= network
->CcxRmState
[1] & 0x07;
1972 if(network
->MBssidMask
!= 0)
1974 network
->bMBssidValid
= true;
1975 network
->MBssidMask
= 0xff << (network
->MBssidMask
);
1976 cpMacAddr(network
->MBssid
, network
->bssid
);
1977 network
->MBssid
[5] &= network
->MBssidMask
;
1981 network
->bMBssidValid
= false;
1986 network
->bCcxRmEnable
= false;
1989 if(info_element
->len
> 4 &&
1990 info_element
->data
[0] == 0x00 &&
1991 info_element
->data
[1] == 0x40 &&
1992 info_element
->data
[2] == 0x96 &&
1993 info_element
->data
[3] == 0x03)
1995 if(info_element
->len
== 5)
1997 network
->bWithCcxVerNum
= true;
1998 network
->BssCcxVerNumber
= info_element
->data
[4];
2002 network
->bWithCcxVerNum
= false;
2003 network
->BssCcxVerNumber
= 0;
2009 IEEE80211_DEBUG_MGMT("MFIE_TYPE_RSN: %d bytes\n",
2011 network
->rsn_ie_len
= min(info_element
->len
+ 2,
2013 memcpy(network
->rsn_ie
, info_element
,
2014 network
->rsn_ie_len
);
2017 //HT related element.
2018 case MFIE_TYPE_HT_CAP
:
2019 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_CAP: %d bytes\n",
2021 tmp_htcap_len
= min(info_element
->len
,(u8
)MAX_IE_LEN
);
2022 if(tmp_htcap_len
!= 0){
2023 network
->bssht
.bdHTSpecVer
= HT_SPEC_VER_EWC
;
2024 network
->bssht
.bdHTCapLen
= tmp_htcap_len
> sizeof(network
->bssht
.bdHTCapBuf
)?\
2025 sizeof(network
->bssht
.bdHTCapBuf
):tmp_htcap_len
;
2026 memcpy(network
->bssht
.bdHTCapBuf
,info_element
->data
,network
->bssht
.bdHTCapLen
);
2028 //If peer is HT, but not WMM, call QosSetLegacyWMMParamWithHT()
2029 // windows driver will update WMM parameters each beacon received once connected
2030 // Linux driver is a bit different.
2031 network
->bssht
.bdSupportHT
= true;
2034 network
->bssht
.bdSupportHT
= false;
2038 case MFIE_TYPE_HT_INFO
:
2039 IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_INFO: %d bytes\n",
2041 tmp_htinfo_len
= min(info_element
->len
,(u8
)MAX_IE_LEN
);
2043 network
->bssht
.bdHTSpecVer
= HT_SPEC_VER_IEEE
;
2044 network
->bssht
.bdHTInfoLen
= tmp_htinfo_len
> sizeof(network
->bssht
.bdHTInfoBuf
)?\
2045 sizeof(network
->bssht
.bdHTInfoBuf
):tmp_htinfo_len
;
2046 memcpy(network
->bssht
.bdHTInfoBuf
,info_element
->data
,network
->bssht
.bdHTInfoLen
);
2050 case MFIE_TYPE_AIRONET
:
2051 IEEE80211_DEBUG_SCAN("MFIE_TYPE_AIRONET: %d bytes\n",
2053 if(info_element
->len
>IE_CISCO_FLAG_POSITION
)
2055 network
->bWithAironetIE
= true;
2057 // CCX 1 spec v1.13, A01.1 CKIP Negotiation (page23):
2058 // "A Cisco access point advertises support for CKIP in beacon and probe response packets,
2059 // by adding an Aironet element and setting one or both of the CKIP negotiation bits."
2060 if( (info_element
->data
[IE_CISCO_FLAG_POSITION
]&SUPPORT_CKIP_MIC
) ||
2061 (info_element
->data
[IE_CISCO_FLAG_POSITION
]&SUPPORT_CKIP_PK
) )
2063 network
->bCkipSupported
= true;
2067 network
->bCkipSupported
= false;
2072 network
->bWithAironetIE
= false;
2073 network
->bCkipSupported
= false;
2076 case MFIE_TYPE_QOS_PARAMETER
:
2078 "QoS Error need to parse QOS_PARAMETER IE\n");
2081 case MFIE_TYPE_COUNTRY
:
2082 IEEE80211_DEBUG_SCAN("MFIE_TYPE_COUNTRY: %d bytes\n",
2084 //printk("=====>Receive <%s> Country IE\n",network->ssid);
2085 ieee80211_extract_country_ie(ieee
, info_element
, network
, network
->bssid
);//addr2 is same as addr3 when from an AP
2089 IEEE80211_DEBUG_MGMT
2090 ("Unsupported info element: %s (%d)\n",
2091 get_info_element_string(info_element
->id
),
2096 length
-= sizeof(*info_element
) + info_element
->len
;
2098 (struct ieee80211_info_element
*)&info_element
->
2099 data
[info_element
->len
];
2102 if(!network
->atheros_cap_exist
&& !network
->broadcom_cap_exist
&&
2103 !network
->cisco_cap_exist
&& !network
->ralink_cap_exist
&& !network
->bssht
.bdRT2RTAggregation
)
2105 network
->unknown_cap_exist
= true;
2109 network
->unknown_cap_exist
= false;
2114 static inline u8
ieee80211_SignalStrengthTranslate(
2120 // Step 1. Scale mapping.
2121 if(CurrSS
>= 71 && CurrSS
<= 100)
2123 RetSS
= 90 + ((CurrSS
- 70) / 3);
2125 else if(CurrSS
>= 41 && CurrSS
<= 70)
2127 RetSS
= 78 + ((CurrSS
- 40) / 3);
2129 else if(CurrSS
>= 31 && CurrSS
<= 40)
2131 RetSS
= 66 + (CurrSS
- 30);
2133 else if(CurrSS
>= 21 && CurrSS
<= 30)
2135 RetSS
= 54 + (CurrSS
- 20);
2137 else if(CurrSS
>= 5 && CurrSS
<= 20)
2139 RetSS
= 42 + (((CurrSS
- 5) * 2) / 3);
2141 else if(CurrSS
== 4)
2145 else if(CurrSS
== 3)
2149 else if(CurrSS
== 2)
2153 else if(CurrSS
== 1)
2161 //RT_TRACE(COMP_DBG, DBG_LOUD, ("##### After Mapping: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS));
2163 // Step 2. Smoothing.
2165 //RT_TRACE(COMP_DBG, DBG_LOUD, ("$$$$$ After Smoothing: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS));
2170 long ieee80211_translate_todbm(u8 signal_strength_index
)// 0-100 index.
2172 long signal_power
; // in dBm.
2174 // Translate to dBm (x=0.5y-95).
2175 signal_power
= (long)((signal_strength_index
+ 1) >> 1);
2178 return signal_power
;
2181 static inline int ieee80211_network_init(
2182 struct ieee80211_device
*ieee
,
2183 struct ieee80211_probe_response
*beacon
,
2184 struct ieee80211_network
*network
,
2185 struct ieee80211_rx_stats
*stats
)
2187 #ifdef CONFIG_IEEE80211_DEBUG
2188 //char rates_str[64];
2192 network
->qos_data
.active
= 0;
2193 network
->qos_data
.supported
= 0;
2194 network
->qos_data
.param_count
= 0;
2195 network
->qos_data
.old_param_count
= 0;
2197 /* Pull out fixed field data */
2198 memcpy(network
->bssid
, beacon
->header
.addr3
, ETH_ALEN
);
2199 network
->capability
= le16_to_cpu(beacon
->capability
);
2200 network
->last_scanned
= jiffies
;
2201 network
->time_stamp
[0] = le32_to_cpu(beacon
->time_stamp
[0]);
2202 network
->time_stamp
[1] = le32_to_cpu(beacon
->time_stamp
[1]);
2203 network
->beacon_interval
= le32_to_cpu(beacon
->beacon_interval
);
2204 /* Where to pull this? beacon->listen_interval;*/
2205 network
->listen_interval
= 0x0A;
2206 network
->rates_len
= network
->rates_ex_len
= 0;
2207 network
->last_associate
= 0;
2208 network
->ssid_len
= 0;
2210 network
->atim_window
= 0;
2211 network
->erp_value
= (network
->capability
& WLAN_CAPABILITY_IBSS
) ?
2213 network
->berp_info_valid
= false;
2214 network
->broadcom_cap_exist
= false;
2215 network
->ralink_cap_exist
= false;
2216 network
->atheros_cap_exist
= false;
2217 network
->cisco_cap_exist
= false;
2218 network
->unknown_cap_exist
= false;
2220 network
->Turbo_Enable
= 0;
2222 network
->CountryIeLen
= 0;
2223 memset(network
->CountryIeBuf
, 0, MAX_IE_LEN
);
2224 //Initialize HT parameters
2225 //ieee80211_ht_initialize(&network->bssht);
2226 HTInitializeBssDesc(&network
->bssht
);
2227 if (stats
->freq
== IEEE80211_52GHZ_BAND
) {
2228 /* for A band (No DS info) */
2229 network
->channel
= stats
->received_channel
;
2231 network
->flags
|= NETWORK_HAS_CCK
;
2233 network
->wpa_ie_len
= 0;
2234 network
->rsn_ie_len
= 0;
2236 if (ieee80211_parse_info_param
2237 (ieee
,beacon
->info_element
, stats
->len
- sizeof(*beacon
), network
, stats
))
2241 if (stats
->freq
== IEEE80211_52GHZ_BAND
)
2242 network
->mode
= IEEE_A
;
2244 if (network
->flags
& NETWORK_HAS_OFDM
)
2245 network
->mode
|= IEEE_G
;
2246 if (network
->flags
& NETWORK_HAS_CCK
)
2247 network
->mode
|= IEEE_B
;
2250 if (network
->mode
== 0) {
2251 IEEE80211_DEBUG_SCAN("Filtered out '%s (%pM)' "
2253 escape_essid(network
->ssid
,
2259 if(network
->bssht
.bdSupportHT
){
2260 if(network
->mode
== IEEE_A
)
2261 network
->mode
= IEEE_N_5G
;
2262 else if(network
->mode
& (IEEE_G
| IEEE_B
))
2263 network
->mode
= IEEE_N_24G
;
2265 if (ieee80211_is_empty_essid(network
->ssid
, network
->ssid_len
))
2266 network
->flags
|= NETWORK_EMPTY_ESSID
;
2268 stats
->signal
= 30 + (stats
->SignalStrength
* 70) / 100;
2269 //stats->signal = ieee80211_SignalStrengthTranslate(stats->signal);
2270 stats
->noise
= ieee80211_translate_todbm((u8
)(100-stats
->signal
)) -25;
2272 memcpy(&network
->stats
, stats
, sizeof(network
->stats
));
2277 static inline int is_same_network(struct ieee80211_network
*src
,
2278 struct ieee80211_network
*dst
, struct ieee80211_device
* ieee
)
2280 /* A network is only a duplicate if the channel, BSSID, ESSID
2281 * and the capability field (in particular IBSS and BSS) all match.
2282 * We treat all <hidden> with the same BSSID and channel
2284 return //((src->ssid_len == dst->ssid_len) &&
2285 (((src
->ssid_len
== dst
->ssid_len
) || (ieee
->iw_mode
== IW_MODE_INFRA
)) &&
2286 (src
->channel
== dst
->channel
) &&
2287 !memcmp(src
->bssid
, dst
->bssid
, ETH_ALEN
) &&
2288 //!memcmp(src->ssid, dst->ssid, src->ssid_len) &&
2289 (!memcmp(src
->ssid
, dst
->ssid
, src
->ssid_len
) || (ieee
->iw_mode
== IW_MODE_INFRA
)) &&
2290 ((src
->capability
& WLAN_CAPABILITY_IBSS
) ==
2291 (dst
->capability
& WLAN_CAPABILITY_IBSS
)) &&
2292 ((src
->capability
& WLAN_CAPABILITY_BSS
) ==
2293 (dst
->capability
& WLAN_CAPABILITY_BSS
)));
2296 static inline void update_network(struct ieee80211_network
*dst
,
2297 struct ieee80211_network
*src
)
2302 memcpy(&dst
->stats
, &src
->stats
, sizeof(struct ieee80211_rx_stats
));
2303 dst
->capability
= src
->capability
;
2304 memcpy(dst
->rates
, src
->rates
, src
->rates_len
);
2305 dst
->rates_len
= src
->rates_len
;
2306 memcpy(dst
->rates_ex
, src
->rates_ex
, src
->rates_ex_len
);
2307 dst
->rates_ex_len
= src
->rates_ex_len
;
2308 if(src
->ssid_len
> 0)
2310 memset(dst
->ssid
, 0, dst
->ssid_len
);
2311 dst
->ssid_len
= src
->ssid_len
;
2312 memcpy(dst
->ssid
, src
->ssid
, src
->ssid_len
);
2314 dst
->mode
= src
->mode
;
2315 dst
->flags
= src
->flags
;
2316 dst
->time_stamp
[0] = src
->time_stamp
[0];
2317 dst
->time_stamp
[1] = src
->time_stamp
[1];
2318 if (src
->flags
& NETWORK_HAS_ERP_VALUE
)
2320 dst
->erp_value
= src
->erp_value
;
2321 dst
->berp_info_valid
= src
->berp_info_valid
= true;
2323 dst
->beacon_interval
= src
->beacon_interval
;
2324 dst
->listen_interval
= src
->listen_interval
;
2325 dst
->atim_window
= src
->atim_window
;
2326 dst
->dtim_period
= src
->dtim_period
;
2327 dst
->dtim_data
= src
->dtim_data
;
2328 dst
->last_dtim_sta_time
[0] = src
->last_dtim_sta_time
[0];
2329 dst
->last_dtim_sta_time
[1] = src
->last_dtim_sta_time
[1];
2330 memcpy(&dst
->tim
, &src
->tim
, sizeof(struct ieee80211_tim_parameters
));
2332 dst
->bssht
.bdSupportHT
= src
->bssht
.bdSupportHT
;
2333 dst
->bssht
.bdRT2RTAggregation
= src
->bssht
.bdRT2RTAggregation
;
2334 dst
->bssht
.bdHTCapLen
= src
->bssht
.bdHTCapLen
;
2335 memcpy(dst
->bssht
.bdHTCapBuf
,src
->bssht
.bdHTCapBuf
,src
->bssht
.bdHTCapLen
);
2336 dst
->bssht
.bdHTInfoLen
= src
->bssht
.bdHTInfoLen
;
2337 memcpy(dst
->bssht
.bdHTInfoBuf
,src
->bssht
.bdHTInfoBuf
,src
->bssht
.bdHTInfoLen
);
2338 dst
->bssht
.bdHTSpecVer
= src
->bssht
.bdHTSpecVer
;
2339 dst
->bssht
.bdRT2RTLongSlotTime
= src
->bssht
.bdRT2RTLongSlotTime
;
2340 dst
->broadcom_cap_exist
= src
->broadcom_cap_exist
;
2341 dst
->ralink_cap_exist
= src
->ralink_cap_exist
;
2342 dst
->atheros_cap_exist
= src
->atheros_cap_exist
;
2343 dst
->cisco_cap_exist
= src
->cisco_cap_exist
;
2344 dst
->unknown_cap_exist
= src
->unknown_cap_exist
;
2345 memcpy(dst
->wpa_ie
, src
->wpa_ie
, src
->wpa_ie_len
);
2346 dst
->wpa_ie_len
= src
->wpa_ie_len
;
2347 memcpy(dst
->rsn_ie
, src
->rsn_ie
, src
->rsn_ie_len
);
2348 dst
->rsn_ie_len
= src
->rsn_ie_len
;
2350 dst
->last_scanned
= jiffies
;
2351 /* qos related parameters */
2352 //qos_active = src->qos_data.active;
2353 qos_active
= dst
->qos_data
.active
;
2354 //old_param = dst->qos_data.old_param_count;
2355 old_param
= dst
->qos_data
.param_count
;
2356 if(dst
->flags
& NETWORK_HAS_QOS_MASK
)
2357 memcpy(&dst
->qos_data
, &src
->qos_data
,
2358 sizeof(struct ieee80211_qos_data
));
2360 dst
->qos_data
.supported
= src
->qos_data
.supported
;
2361 dst
->qos_data
.param_count
= src
->qos_data
.param_count
;
2364 if(dst
->qos_data
.supported
== 1) {
2365 dst
->QoS_Enable
= 1;
2368 ("QoS the network %s is QoS supported\n",
2372 ("QoS the network is QoS supported\n");
2374 dst
->qos_data
.active
= qos_active
;
2375 dst
->qos_data
.old_param_count
= old_param
;
2377 /* dst->last_associate is not overwritten */
2378 dst
->wmm_info
= src
->wmm_info
; //sure to exist in beacon or probe response frame.
2379 if(src
->wmm_param
[0].ac_aci_acm_aifsn
|| \
2380 src
->wmm_param
[1].ac_aci_acm_aifsn
|| \
2381 src
->wmm_param
[2].ac_aci_acm_aifsn
|| \
2382 src
->wmm_param
[3].ac_aci_acm_aifsn
) {
2383 memcpy(dst
->wmm_param
, src
->wmm_param
, WME_AC_PRAM_LEN
);
2385 //dst->QoS_Enable = src->QoS_Enable;
2387 dst
->Turbo_Enable
= src
->Turbo_Enable
;
2390 dst
->CountryIeLen
= src
->CountryIeLen
;
2391 memcpy(dst
->CountryIeBuf
, src
->CountryIeBuf
, src
->CountryIeLen
);
2393 //added by amy for LEAP
2394 dst
->bWithAironetIE
= src
->bWithAironetIE
;
2395 dst
->bCkipSupported
= src
->bCkipSupported
;
2396 memcpy(dst
->CcxRmState
,src
->CcxRmState
,2);
2397 dst
->bCcxRmEnable
= src
->bCcxRmEnable
;
2398 dst
->MBssidMask
= src
->MBssidMask
;
2399 dst
->bMBssidValid
= src
->bMBssidValid
;
2400 memcpy(dst
->MBssid
,src
->MBssid
,6);
2401 dst
->bWithCcxVerNum
= src
->bWithCcxVerNum
;
2402 dst
->BssCcxVerNumber
= src
->BssCcxVerNumber
;
2406 static inline int is_beacon(__le16 fc
)
2408 return (WLAN_FC_GET_STYPE(le16_to_cpu(fc
)) == IEEE80211_STYPE_BEACON
);
2411 static inline void ieee80211_process_probe_response(
2412 struct ieee80211_device
*ieee
,
2413 struct ieee80211_probe_response
*beacon
,
2414 struct ieee80211_rx_stats
*stats
)
2416 struct ieee80211_network network
;
2417 struct ieee80211_network
*target
;
2418 struct ieee80211_network
*oldest
= NULL
;
2419 #ifdef CONFIG_IEEE80211_DEBUG
2420 struct ieee80211_info_element
*info_element
= &beacon
->info_element
[0];
2422 unsigned long flags
;
2426 memset(&network
, 0, sizeof(struct ieee80211_network
));
2427 IEEE80211_DEBUG_SCAN(
2428 "'%s' (%pM): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n",
2429 escape_essid(info_element
->data
, info_element
->len
),
2430 beacon
->header
.addr3
,
2431 (beacon
->capability
& (1<<0xf)) ? '1' : '0',
2432 (beacon
->capability
& (1<<0xe)) ? '1' : '0',
2433 (beacon
->capability
& (1<<0xd)) ? '1' : '0',
2434 (beacon
->capability
& (1<<0xc)) ? '1' : '0',
2435 (beacon
->capability
& (1<<0xb)) ? '1' : '0',
2436 (beacon
->capability
& (1<<0xa)) ? '1' : '0',
2437 (beacon
->capability
& (1<<0x9)) ? '1' : '0',
2438 (beacon
->capability
& (1<<0x8)) ? '1' : '0',
2439 (beacon
->capability
& (1<<0x7)) ? '1' : '0',
2440 (beacon
->capability
& (1<<0x6)) ? '1' : '0',
2441 (beacon
->capability
& (1<<0x5)) ? '1' : '0',
2442 (beacon
->capability
& (1<<0x4)) ? '1' : '0',
2443 (beacon
->capability
& (1<<0x3)) ? '1' : '0',
2444 (beacon
->capability
& (1<<0x2)) ? '1' : '0',
2445 (beacon
->capability
& (1<<0x1)) ? '1' : '0',
2446 (beacon
->capability
& (1<<0x0)) ? '1' : '0');
2448 if (ieee80211_network_init(ieee
, beacon
, &network
, stats
)) {
2449 IEEE80211_DEBUG_SCAN("Dropped '%s' (%pM) via %s.\n",
2450 escape_essid(info_element
->data
,
2452 beacon
->header
.addr3
,
2453 WLAN_FC_GET_STYPE(beacon
->header
.frame_ctl
) ==
2454 IEEE80211_STYPE_PROBE_RESP
?
2455 "PROBE RESPONSE" : "BEACON");
2459 // For Asus EeePc request,
2460 // (1) if wireless adapter receive get any 802.11d country code in AP beacon,
2461 // wireless adapter should follow the country code.
2462 // (2) If there is no any country code in beacon,
2463 // then wireless adapter should do active scan from ch1~11 and
2464 // passive scan from ch12~14
2466 if( !IsLegalChannel(ieee
, network
.channel
) )
2468 if(ieee
->bGlobalDomain
)
2470 if (WLAN_FC_GET_STYPE(beacon
->header
.frame_ctl
) == IEEE80211_STYPE_PROBE_RESP
)
2472 // Case 1: Country code
2473 if(IS_COUNTRY_IE_VALID(ieee
) )
2475 if( !IsLegalChannel(ieee
, network
.channel
) )
2477 printk("GetScanInfo(): For Country code, filter probe response at channel(%d).\n", network
.channel
);
2481 // Case 2: No any country code.
2484 // Filter over channel ch12~14
2485 if(network
.channel
> 11)
2487 printk("GetScanInfo(): For Global Domain, filter probe response at channel(%d).\n", network
.channel
);
2494 // Case 1: Country code
2495 if(IS_COUNTRY_IE_VALID(ieee
) )
2497 if( !IsLegalChannel(ieee
, network
.channel
) )
2499 printk("GetScanInfo(): For Country code, filter beacon at channel(%d).\n",network
.channel
);
2503 // Case 2: No any country code.
2506 // Filter over channel ch12~14
2507 if(network
.channel
> 14)
2509 printk("GetScanInfo(): For Global Domain, filter beacon at channel(%d).\n",network
.channel
);
2516 /* The network parsed correctly -- so now we scan our known networks
2517 * to see if we can find it in our list.
2519 * NOTE: This search is definitely not optimized. Once its doing
2520 * the "right thing" we'll optimize it for efficiency if
2523 /* Search for this entry in the list and update it if it is
2526 spin_lock_irqsave(&ieee
->lock
, flags
);
2528 if(is_same_network(&ieee
->current_network
, &network
, ieee
)) {
2529 update_network(&ieee
->current_network
, &network
);
2530 if((ieee
->current_network
.mode
== IEEE_N_24G
|| ieee
->current_network
.mode
== IEEE_G
)
2531 && ieee
->current_network
.berp_info_valid
){
2532 if(ieee
->current_network
.erp_value
& ERP_UseProtection
)
2533 ieee
->current_network
.buseprotection
= true;
2535 ieee
->current_network
.buseprotection
= false;
2537 if(is_beacon(beacon
->header
.frame_ctl
))
2539 if(ieee
->state
== IEEE80211_LINKED
)
2540 ieee
->LinkDetectInfo
.NumRecvBcnInPeriod
++;
2543 network
.flags
= (~NETWORK_EMPTY_ESSID
& network
.flags
)|(NETWORK_EMPTY_ESSID
& ieee
->current_network
.flags
);
2546 list_for_each_entry(target
, &ieee
->network_list
, list
) {
2547 if (is_same_network(target
, &network
, ieee
))
2549 if ((oldest
== NULL
) ||
2550 (target
->last_scanned
< oldest
->last_scanned
))
2554 /* If we didn't find a match, then get a new network slot to initialize
2555 * with this beacon's information */
2556 if (&target
->list
== &ieee
->network_list
) {
2557 if (list_empty(&ieee
->network_free_list
)) {
2558 /* If there are no more slots, expire the oldest */
2559 list_del(&oldest
->list
);
2561 IEEE80211_DEBUG_SCAN("Expired '%s' (%pM) from "
2563 escape_essid(target
->ssid
,
2567 /* Otherwise just pull from the free list */
2568 target
= list_entry(ieee
->network_free_list
.next
,
2569 struct ieee80211_network
, list
);
2570 list_del(ieee
->network_free_list
.next
);
2574 #ifdef CONFIG_IEEE80211_DEBUG
2575 IEEE80211_DEBUG_SCAN("Adding '%s' (%pM) via %s.\n",
2576 escape_essid(network
.ssid
,
2579 WLAN_FC_GET_STYPE(beacon
->header
.frame_ctl
) ==
2580 IEEE80211_STYPE_PROBE_RESP
?
2581 "PROBE RESPONSE" : "BEACON");
2583 memcpy(target
, &network
, sizeof(*target
));
2584 list_add_tail(&target
->list
, &ieee
->network_list
);
2585 if(ieee
->softmac_features
& IEEE_SOFTMAC_ASSOCIATE
)
2586 ieee80211_softmac_new_net(ieee
,&network
);
2588 IEEE80211_DEBUG_SCAN("Updating '%s' (%pM) via %s.\n",
2589 escape_essid(target
->ssid
,
2592 WLAN_FC_GET_STYPE(beacon
->header
.frame_ctl
) ==
2593 IEEE80211_STYPE_PROBE_RESP
?
2594 "PROBE RESPONSE" : "BEACON");
2596 /* we have an entry and we are going to update it. But this entry may
2597 * be already expired. In this case we do the same as we found a new
2598 * net and call the new_net handler
2600 renew
= !time_after(target
->last_scanned
+ ieee
->scan_age
, jiffies
);
2601 //YJ,add,080819,for hidden ap
2602 if(is_beacon(beacon
->header
.frame_ctl
) == 0)
2603 network
.flags
= (~NETWORK_EMPTY_ESSID
& network
.flags
)|(NETWORK_EMPTY_ESSID
& target
->flags
);
2604 //if(strncmp(network.ssid, "linksys-c",9) == 0)
2605 // printk("====>2 network.ssid=%s FLAG=%d target.ssid=%s FLAG=%d\n", network.ssid, network.flags, target->ssid, target->flags);
2606 if(((network
.flags
& NETWORK_EMPTY_ESSID
) == NETWORK_EMPTY_ESSID
) \
2607 && (((network
.ssid_len
> 0) && (strncmp(target
->ssid
, network
.ssid
, network
.ssid_len
)))\
2608 ||((ieee
->current_network
.ssid_len
== network
.ssid_len
)&&(strncmp(ieee
->current_network
.ssid
, network
.ssid
, network
.ssid_len
) == 0)&&(ieee
->state
== IEEE80211_NOLINK
))))
2610 //YJ,add,080819,for hidden ap,end
2612 update_network(target
, &network
);
2613 if(renew
&& (ieee
->softmac_features
& IEEE_SOFTMAC_ASSOCIATE
))
2614 ieee80211_softmac_new_net(ieee
,&network
);
2617 spin_unlock_irqrestore(&ieee
->lock
, flags
);
2618 if (is_beacon(beacon
->header
.frame_ctl
)&&is_same_network(&ieee
->current_network
, &network
, ieee
)&&\
2619 (ieee
->state
== IEEE80211_LINKED
)) {
2620 if(ieee
->handle_beacon
!= NULL
) {
2621 ieee
->handle_beacon(ieee
->dev
,beacon
,&ieee
->current_network
);
2626 void ieee80211_rx_mgt(struct ieee80211_device
*ieee
,
2627 struct ieee80211_hdr_4addr
*header
,
2628 struct ieee80211_rx_stats
*stats
)
2630 switch (WLAN_FC_GET_STYPE(header
->frame_ctl
)) {
2632 case IEEE80211_STYPE_BEACON
:
2633 IEEE80211_DEBUG_MGMT("received BEACON (%d)\n",
2634 WLAN_FC_GET_STYPE(header
->frame_ctl
));
2635 IEEE80211_DEBUG_SCAN("Beacon\n");
2636 ieee80211_process_probe_response(
2637 ieee
, (struct ieee80211_probe_response
*)header
, stats
);
2640 case IEEE80211_STYPE_PROBE_RESP
:
2641 IEEE80211_DEBUG_MGMT("received PROBE RESPONSE (%d)\n",
2642 WLAN_FC_GET_STYPE(header
->frame_ctl
));
2643 IEEE80211_DEBUG_SCAN("Probe response\n");
2644 ieee80211_process_probe_response(
2645 ieee
, (struct ieee80211_probe_response
*)header
, stats
);
2651 EXPORT_SYMBOL(ieee80211_rx_mgt
);
2652 EXPORT_SYMBOL(ieee80211_rx
);