diff options
Diffstat (limited to 'drivers/staging/rtl8192su/ieee80211/ieee80211_rx.c')
| -rw-r--r-- | drivers/staging/rtl8192su/ieee80211/ieee80211_rx.c | 2832 |
1 files changed, 2832 insertions, 0 deletions
diff --git a/drivers/staging/rtl8192su/ieee80211/ieee80211_rx.c b/drivers/staging/rtl8192su/ieee80211/ieee80211_rx.c new file mode 100644 index 00000000000..2b2ffd34bc9 --- /dev/null +++ b/drivers/staging/rtl8192su/ieee80211/ieee80211_rx.c @@ -0,0 +1,2832 @@ +/* + * Original code based Host AP (software wireless LAN access point) driver + * for Intersil Prism2/2.5/3 - hostap.o module, common routines + * + * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen + * <jkmaline@cc.hut.fi> + * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi> + * Copyright (c) 2004, Intel Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. See README and COPYING for + * more details. + ****************************************************************************** + + Few modifications for Realtek's Wi-Fi drivers by + Andrea Merello <andreamrl@tiscali.it> + + A special thanks goes to Realtek for their support ! + +******************************************************************************/ + + +#include <linux/compiler.h> +//#include <linux/config.h> +#include <linux/errno.h> +#include <linux/if_arp.h> +#include <linux/in6.h> +#include <linux/in.h> +#include <linux/ip.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/netdevice.h> +#include <linux/pci.h> +#include <linux/proc_fs.h> +#include <linux/skbuff.h> +#include <linux/slab.h> +#include <linux/tcp.h> +#include <linux/types.h> +#include <linux/version.h> +#include <linux/wireless.h> +#include <linux/etherdevice.h> +#include <asm/uaccess.h> +#include <linux/ctype.h> + +#include "ieee80211.h" +#ifdef ENABLE_DOT11D +#include "dot11d.h" +#endif +static inline void ieee80211_monitor_rx(struct ieee80211_device *ieee, + struct sk_buff *skb, + struct ieee80211_rx_stats *rx_stats) +{ + struct ieee80211_hdr_4addr *hdr = (struct ieee80211_hdr_4addr *)skb->data; + u16 fc = le16_to_cpu(hdr->frame_ctl); + + skb->dev = ieee->dev; +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22) + skb_reset_mac_header(skb); +#else + skb->mac.raw = skb->data; +#endif + + skb_pull(skb, ieee80211_get_hdrlen(fc)); + skb->pkt_type = PACKET_OTHERHOST; + skb->protocol = __constant_htons(ETH_P_80211_RAW); + memset(skb->cb, 0, sizeof(skb->cb)); + netif_rx(skb); +} + + +/* Called only as a tasklet (software IRQ) */ +static struct ieee80211_frag_entry * +ieee80211_frag_cache_find(struct ieee80211_device *ieee, unsigned int seq, + unsigned int frag, u8 tid,u8 *src, u8 *dst) +{ + struct ieee80211_frag_entry *entry; + int i; + + for (i = 0; i < IEEE80211_FRAG_CACHE_LEN; i++) { + entry = &ieee->frag_cache[tid][i]; + if (entry->skb != NULL && + time_after(jiffies, entry->first_frag_time + 2 * HZ)) { + IEEE80211_DEBUG_FRAG( + "expiring fragment cache entry " + "seq=%u last_frag=%u\n", + entry->seq, entry->last_frag); + dev_kfree_skb_any(entry->skb); + entry->skb = NULL; + } + + if (entry->skb != NULL && entry->seq == seq && + (entry->last_frag + 1 == frag || frag == -1) && + memcmp(entry->src_addr, src, ETH_ALEN) == 0 && + memcmp(entry->dst_addr, dst, ETH_ALEN) == 0) + return entry; + } + + return NULL; +} + +/* Called only as a tasklet (software IRQ) */ +static struct sk_buff * +ieee80211_frag_cache_get(struct ieee80211_device *ieee, + struct ieee80211_hdr_4addr *hdr) +{ + struct sk_buff *skb = NULL; + u16 fc = le16_to_cpu(hdr->frame_ctl); + u16 sc = le16_to_cpu(hdr->seq_ctl); + unsigned int frag = WLAN_GET_SEQ_FRAG(sc); + unsigned int seq = WLAN_GET_SEQ_SEQ(sc); + struct ieee80211_frag_entry *entry; + struct ieee80211_hdr_3addrqos *hdr_3addrqos; + struct ieee80211_hdr_4addrqos *hdr_4addrqos; + u8 tid; + + if (((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) { + hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)hdr; + tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID; + tid = UP2AC(tid); + tid ++; + } else if (IEEE80211_QOS_HAS_SEQ(fc)) { + hdr_3addrqos = (struct ieee80211_hdr_3addrqos *)hdr; + tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID; + tid = UP2AC(tid); + tid ++; + } else { + tid = 0; + } + + if (frag == 0) { + /* Reserve enough space to fit maximum frame length */ + skb = dev_alloc_skb(ieee->dev->mtu + + sizeof(struct ieee80211_hdr_4addr) + + 8 /* LLC */ + + 2 /* alignment */ + + 8 /* WEP */ + + ETH_ALEN /* WDS */ + + (IEEE80211_QOS_HAS_SEQ(fc)?2:0) /* QOS Control */); + if (skb == NULL) + return NULL; + + entry = &ieee->frag_cache[tid][ieee->frag_next_idx[tid]]; + ieee->frag_next_idx[tid]++; + if (ieee->frag_next_idx[tid] >= IEEE80211_FRAG_CACHE_LEN) + ieee->frag_next_idx[tid] = 0; + + if (entry->skb != NULL) + dev_kfree_skb_any(entry->skb); + + entry->first_frag_time = jiffies; + entry->seq = seq; + entry->last_frag = frag; + entry->skb = skb; + memcpy(entry->src_addr, hdr->addr2, ETH_ALEN); + memcpy(entry->dst_addr, hdr->addr1, ETH_ALEN); + } else { + /* received a fragment of a frame for which the head fragment + * should have already been received */ + entry = ieee80211_frag_cache_find(ieee, seq, frag, tid,hdr->addr2, + hdr->addr1); + if (entry != NULL) { + entry->last_frag = frag; + skb = entry->skb; + } + } + + return skb; +} + + +/* Called only as a tasklet (software IRQ) */ +static int ieee80211_frag_cache_invalidate(struct ieee80211_device *ieee, + struct ieee80211_hdr_4addr *hdr) +{ + u16 fc = le16_to_cpu(hdr->frame_ctl); + u16 sc = le16_to_cpu(hdr->seq_ctl); + unsigned int seq = WLAN_GET_SEQ_SEQ(sc); + struct ieee80211_frag_entry *entry; + struct ieee80211_hdr_3addrqos *hdr_3addrqos; + struct ieee80211_hdr_4addrqos *hdr_4addrqos; + u8 tid; + + if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) { + hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)hdr; + tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID; + tid = UP2AC(tid); + tid ++; + } else if (IEEE80211_QOS_HAS_SEQ(fc)) { + hdr_3addrqos = (struct ieee80211_hdr_3addrqos *)hdr; + tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID; + tid = UP2AC(tid); + tid ++; + } else { + tid = 0; + } + + entry = ieee80211_frag_cache_find(ieee, seq, -1, tid,hdr->addr2, + hdr->addr1); + + if (entry == NULL) { + IEEE80211_DEBUG_FRAG( + "could not invalidate fragment cache " + "entry (seq=%u)\n", seq); + return -1; + } + + entry->skb = NULL; + return 0; +} + + + +/* ieee80211_rx_frame_mgtmt + * + * Responsible for handling management control frames + * + * Called by ieee80211_rx */ +static inline int +ieee80211_rx_frame_mgmt(struct ieee80211_device *ieee, struct sk_buff *skb, + struct ieee80211_rx_stats *rx_stats, u16 type, + u16 stype) +{ + /* On the struct stats definition there is written that + * this is not mandatory.... but seems that the probe + * response parser uses it + */ + struct ieee80211_hdr_3addr * hdr = (struct ieee80211_hdr_3addr *)skb->data; + + rx_stats->len = skb->len; + ieee80211_rx_mgt(ieee,(struct ieee80211_hdr_4addr *)skb->data,rx_stats); + //if ((ieee->state == IEEE80211_LINKED) && (memcmp(hdr->addr3, ieee->current_network.bssid, ETH_ALEN))) + if ((memcmp(hdr->addr1, ieee->dev->dev_addr, ETH_ALEN)))//use ADDR1 to perform address matching for Management frames + { + dev_kfree_skb_any(skb); + return 0; + } + + ieee80211_rx_frame_softmac(ieee, skb, rx_stats, type, stype); + + dev_kfree_skb_any(skb); + + return 0; + + #ifdef NOT_YET + if (ieee->iw_mode == IW_MODE_MASTER) { + printk(KERN_DEBUG "%s: Master mode not yet suppported.\n", + ieee->dev->name); + return 0; +/* + hostap_update_sta_ps(ieee, (struct hostap_ieee80211_hdr_4addr *) + skb->data);*/ + } + + if (ieee->hostapd && type == IEEE80211_TYPE_MGMT) { + if (stype == WLAN_FC_STYPE_BEACON && + ieee->iw_mode == IW_MODE_MASTER) { + struct sk_buff *skb2; + /* Process beacon frames also in kernel driver to + * update STA(AP) table statistics */ + skb2 = skb_clone(skb, GFP_ATOMIC); + if (skb2) + hostap_rx(skb2->dev, skb2, rx_stats); + } + + /* send management frames to the user space daemon for + * processing */ + ieee->apdevstats.rx_packets++; + ieee->apdevstats.rx_bytes += skb->len; + prism2_rx_80211(ieee->apdev, skb, rx_stats, PRISM2_RX_MGMT); + return 0; + } + + if (ieee->iw_mode == IW_MODE_MASTER) { + if (type != WLAN_FC_TYPE_MGMT && type != WLAN_FC_TYPE_CTRL) { + printk(KERN_DEBUG "%s: unknown management frame " + "(type=0x%02x, stype=0x%02x) dropped\n", + skb->dev->name, type, stype); + return -1; + } + + hostap_rx(skb->dev, skb, rx_stats); + return 0; + } + + printk(KERN_DEBUG "%s: hostap_rx_frame_mgmt: management frame " + "received in non-Host AP mode\n", skb->dev->name); + return -1; + #endif +} + + + +/* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */ +/* Ethernet-II snap header (RFC1042 for most EtherTypes) */ +static unsigned char rfc1042_header[] = +{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; +/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */ +static unsigned char bridge_tunnel_header[] = +{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 }; +/* No encapsulation header if EtherType < 0x600 (=length) */ + +/* Called by ieee80211_rx_frame_decrypt */ +static int ieee80211_is_eapol_frame(struct ieee80211_device *ieee, + struct sk_buff *skb, size_t hdrlen) +{ + struct net_device *dev = ieee->dev; + u16 fc, ethertype; + struct ieee80211_hdr_4addr *hdr; + u8 *pos; + + if (skb->len < 24) + return 0; + + hdr = (struct ieee80211_hdr_4addr *) skb->data; + fc = le16_to_cpu(hdr->frame_ctl); + + /* check that the frame is unicast frame to us */ + if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == + IEEE80211_FCTL_TODS && + memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0 && + memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) { + /* ToDS frame with own addr BSSID and DA */ + } else if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == + IEEE80211_FCTL_FROMDS && + memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) { + /* FromDS frame with own addr as DA */ + } else + return 0; + + if (skb->len < 24 + 8) + return 0; + + /* check for port access entity Ethernet type */ +// pos = skb->data + 24; + pos = skb->data + hdrlen; + ethertype = (pos[6] << 8) | pos[7]; + if (ethertype == ETH_P_PAE) + return 1; + + return 0; +} + +/* Called only as a tasklet (software IRQ), by ieee80211_rx */ +static inline int +ieee80211_rx_frame_decrypt(struct ieee80211_device* ieee, struct sk_buff *skb, + struct ieee80211_crypt_data *crypt) +{ + struct ieee80211_hdr_4addr *hdr; + int res, hdrlen; + + if (crypt == NULL || crypt->ops->decrypt_mpdu == NULL) + return 0; +#if 1 + if (ieee->hwsec_active) + { + cb_desc *tcb_desc = (cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE); + tcb_desc->bHwSec = 1; + } +#endif + hdr = (struct ieee80211_hdr_4addr *) skb->data; + hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl)); + +#ifdef CONFIG_IEEE80211_CRYPT_TKIP + if (ieee->tkip_countermeasures && + strcmp(crypt->ops->name, "TKIP") == 0) { + if (net_ratelimit()) { + printk(KERN_DEBUG "%s: TKIP countermeasures: dropped " + "received packet from " MAC_FMT "\n", + ieee->dev->name, MAC_ARG(hdr->addr2)); + } + return -1; + } +#endif + + atomic_inc(&crypt->refcnt); + res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv); + atomic_dec(&crypt->refcnt); + if (res < 0) { + IEEE80211_DEBUG_DROP( + "decryption failed (SA=" MAC_FMT + ") res=%d\n", MAC_ARG(hdr->addr2), res); + if (res == -2) + IEEE80211_DEBUG_DROP("Decryption failed ICV " + "mismatch (key %d)\n", + skb->data[hdrlen + 3] >> 6); + ieee->ieee_stats.rx_discards_undecryptable++; + return -1; + } + + return res; +} + + +/* Called only as a tasklet (software IRQ), by ieee80211_rx */ +static inline int +ieee80211_rx_frame_decrypt_msdu(struct ieee80211_device* ieee, struct sk_buff *skb, + int keyidx, struct ieee80211_crypt_data *crypt) +{ + struct ieee80211_hdr_4addr *hdr; + int res, hdrlen; + + if (crypt == NULL || crypt->ops->decrypt_msdu == NULL) + return 0; + if (ieee->hwsec_active) + { + cb_desc *tcb_desc = (cb_desc *)(skb->cb+ MAX_DEV_ADDR_SIZE); + tcb_desc->bHwSec = 1; + } + + hdr = (struct ieee80211_hdr_4addr *) skb->data; + hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl)); + + atomic_inc(&crypt->refcnt); + res = crypt->ops->decrypt_msdu(skb, keyidx, hdrlen, crypt->priv); + atomic_dec(&crypt->refcnt); + if (res < 0) { + printk(KERN_DEBUG "%s: MSDU decryption/MIC verification failed" + " (SA=" MAC_FMT " keyidx=%d)\n", + ieee->dev->name, MAC_ARG(hdr->addr2), keyidx); + return -1; + } + + return 0; +} + + +/* this function is stolen from ipw2200 driver*/ +#define IEEE_PACKET_RETRY_TIME (5*HZ) +static int is_duplicate_packet(struct ieee80211_device *ieee, + struct ieee80211_hdr_4addr *header) +{ + u16 fc = le16_to_cpu(header->frame_ctl); + u16 sc = le16_to_cpu(header->seq_ctl); + u16 seq = WLAN_GET_SEQ_SEQ(sc); + u16 frag = WLAN_GET_SEQ_FRAG(sc); + u16 *last_seq, *last_frag; + unsigned long *last_time; + struct ieee80211_hdr_3addrqos *hdr_3addrqos; + struct ieee80211_hdr_4addrqos *hdr_4addrqos; + u8 tid; + + + //TO2DS and QoS + if(((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS)&&IEEE80211_QOS_HAS_SEQ(fc)) { + hdr_4addrqos = (struct ieee80211_hdr_4addrqos *)header; + tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & IEEE80211_QCTL_TID; + tid = UP2AC(tid); + tid ++; + } else if(IEEE80211_QOS_HAS_SEQ(fc)) { //QoS + hdr_3addrqos = (struct ieee80211_hdr_3addrqos*)header; + tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & IEEE80211_QCTL_TID; + tid = UP2AC(tid); + tid ++; + } else { // no QoS + tid = 0; + } + + switch (ieee->iw_mode) { + case IW_MODE_ADHOC: + { + struct list_head *p; + struct ieee_ibss_seq *entry = NULL; + u8 *mac = header->addr2; + int index = mac[5] % IEEE_IBSS_MAC_HASH_SIZE; + //for (pos = (head)->next; pos != (head); pos = pos->next) + //__list_for_each(p, &ieee->ibss_mac_hash[index]) { + list_for_each(p, &ieee->ibss_mac_hash[index]) { + entry = list_entry(p, struct ieee_ibss_seq, list); + if (!memcmp(entry->mac, mac, ETH_ALEN)) + break; + } + // if (memcmp(entry->mac, mac, ETH_ALEN)){ + if (p == &ieee->ibss_mac_hash[index]) { + entry = kmalloc(sizeof(struct ieee_ibss_seq), GFP_ATOMIC); + if (!entry) { + printk(KERN_WARNING "Cannot malloc new mac entry\n"); + return 0; + } + memcpy(entry->mac, mac, ETH_ALEN); + entry->seq_num[tid] = seq; + entry->frag_num[tid] = frag; + entry->packet_time[tid] = jiffies; + list_add(&entry->list, &ieee->ibss_mac_hash[index]); + return 0; + } + last_seq = &entry->seq_num[tid]; + last_frag = &entry->frag_num[tid]; + last_time = &entry->packet_time[tid]; + break; + } + + case IW_MODE_INFRA: + last_seq = &ieee->last_rxseq_num[tid]; + last_frag = &ieee->last_rxfrag_num[tid]; + last_time = &ieee->last_packet_time[tid]; + + break; + default: + return 0; + } + +// if(tid != 0) { +// printk(KERN_WARNING ":)))))))))))%x %x %x, fc(%x)\n", tid, *last_seq, seq, header->frame_ctl); +// } + if ((*last_seq == seq) && + time_after(*last_time + IEEE_PACKET_RETRY_TIME, jiffies)) { + if (*last_frag == frag){ + //printk(KERN_WARNING "[1] go drop!\n"); + goto drop; + + } + if (*last_frag + 1 != frag) + /* out-of-order fragment */ + //printk(KERN_WARNING "[2] go drop!\n"); + goto drop; + } else + *last_seq = seq; + + *last_frag = frag; + *last_time = jiffies; + return 0; + +drop: +// BUG_ON(!(fc & IEEE80211_FCTL_RETRY)); +// printk("DUP\n"); + + return 1; +} +bool +AddReorderEntry( + PRX_TS_RECORD pTS, + PRX_REORDER_ENTRY pReorderEntry + ) +{ + struct list_head *pList = &pTS->RxPendingPktList; +#if 1 + while(pList->next != &pTS->RxPendingPktList) + { + if( SN_LESS(pReorderEntry->SeqNum, ((PRX_REORDER_ENTRY)list_entry(pList->next,RX_REORDER_ENTRY,List))->SeqNum) ) + { + pList = pList->next; + } + else if( SN_EQUAL(pReorderEntry->SeqNum, ((PRX_REORDER_ENTRY)list_entry(pList->next,RX_REORDER_ENTRY,List))->SeqNum) ) + { + return false; + } + else + { + break; + } + } +#endif + pReorderEntry->List.next = pList->next; + pReorderEntry->List.next->prev = &pReorderEntry->List; + pReorderEntry->List.prev = pList; + pList->next = &pReorderEntry->List; + + return true; +} + +void ieee80211_indicate_packets(struct ieee80211_device *ieee, struct ieee80211_rxb** prxbIndicateArray,u8 index) +{ + u8 i = 0 , j=0; + u16 ethertype; +// if(index > 1) +// IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): hahahahhhh, We indicate packet from reorder list, index is %u\n",__FUNCTION__,index); + for(j = 0; j<index; j++) + { +//added by amy for reorder + struct ieee80211_rxb* prxb = prxbIndicateArray[j]; + for(i = 0; i<prxb->nr_subframes; i++) { + struct sk_buff *sub_skb = prxb->subframes[i]; + + /* convert hdr + possible LLC headers into Ethernet header */ + ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7]; + if (sub_skb->len >= 8 && + ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 && + ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) || + memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) { + /* remove RFC1042 or Bridge-Tunnel encapsulation and + * replace EtherType */ + skb_pull(sub_skb, SNAP_SIZE); + memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN); + memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN); + } else { + u16 len; + /* Leave Ethernet header part of hdr and full payload */ + len = htons(sub_skb->len); + memcpy(skb_push(sub_skb, 2), &len, 2); + memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN); + memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN); + } + //stats->rx_packets++; + //stats->rx_bytes += sub_skb->len; + + /* Indicat the packets to upper layer */ + if (sub_skb) { + //printk("0skb_len(%d)\n", skb->len); + sub_skb->protocol = eth_type_trans(sub_skb, ieee->dev); + memset(sub_skb->cb, 0, sizeof(sub_skb->cb)); + sub_skb->dev = ieee->dev; + sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */ + //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */ + ieee->last_rx_ps_time = jiffies; + //printk("1skb_len(%d)\n", skb->len); + netif_rx(sub_skb); + } + } + kfree(prxb); + prxb = NULL; + } +} + + +void RxReorderIndicatePacket( struct ieee80211_device *ieee, + struct ieee80211_rxb* prxb, + PRX_TS_RECORD pTS, + u16 SeqNum) +{ + PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo; + PRX_REORDER_ENTRY pReorderEntry = NULL; + struct ieee80211_rxb* prxbIndicateArray[REORDER_WIN_SIZE]; + u8 WinSize = pHTInfo->RxReorderWinSize; + u16 WinEnd = (pTS->RxIndicateSeq + WinSize -1)%4096; + u8 index = 0; + bool bMatchWinStart = false, bPktInBuf = false; + IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): Seq is %d,pTS->RxIndicateSeq is %d, WinSize is %d\n",__FUNCTION__,SeqNum,pTS->RxIndicateSeq,WinSize); +#if 0 + if(!list_empty(&ieee->RxReorder_Unused_List)) + IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): ieee->RxReorder_Unused_List is nut NULL\n"); +#endif + /* Rx Reorder initialize condition.*/ + if(pTS->RxIndicateSeq == 0xffff) { + pTS->RxIndicateSeq = SeqNum; + } + + /* Drop out the packet which SeqNum is smaller than WinStart */ + if(SN_LESS(SeqNum, pTS->RxIndicateSeq)) { + IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packet Drop! IndicateSeq: %d, NewSeq: %d\n", + pTS->RxIndicateSeq, SeqNum); + pHTInfo->RxReorderDropCounter++; + { + int i; + for(i =0; i < prxb->nr_subframes; i++) { + dev_kfree_skb(prxb->subframes[i]); + } + kfree(prxb); + prxb = NULL; + } + return; + } + + /* + * Sliding window manipulation. Conditions includes: + * 1. Incoming SeqNum is equal to WinStart =>Window shift 1 + * 2. Incoming SeqNum is larger than the WinEnd => Window shift N + */ + if(SN_EQUAL(SeqNum, pTS->RxIndicateSeq)) { + pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096; + bMatchWinStart = true; + } else if(SN_LESS(WinEnd, SeqNum)) { + if(SeqNum >= (WinSize - 1)) { + pTS->RxIndicateSeq = SeqNum + 1 -WinSize; + } else { + pTS->RxIndicateSeq = 4095 - (WinSize - (SeqNum +1)) + 1; + } + IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Window Shift! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum); + } + + /* + * Indication process. + * After Packet dropping and Sliding Window shifting as above, we can now just indicate the packets + * with the SeqNum smaller than latest WinStart and buffer other packets. + */ + /* For Rx Reorder condition: + * 1. All packets with SeqNum smaller than WinStart => Indicate + * 2. All packets with SeqNum larger than or equal to WinStart => Buffer it. + */ + if(bMatchWinStart) { + /* Current packet is going to be indicated.*/ + IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Packets indication!! IndicateSeq: %d, NewSeq: %d\n",\ + pTS->RxIndicateSeq, SeqNum); + prxbIndicateArray[0] = prxb; +// printk("========================>%s(): SeqNum is %d\n",__FUNCTION__,SeqNum); + index = 1; + } else { + /* Current packet is going to be inserted into pending list.*/ + //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): We RX no ordered packed, insert to orderd list\n",__FUNCTION__); + if(!list_empty(&ieee->RxReorder_Unused_List)) { + pReorderEntry = (PRX_REORDER_ENTRY)list_entry(ieee->RxReorder_Unused_List.next,RX_REORDER_ENTRY,List); + list_del_init(&pReorderEntry->List); + + /* Make a reorder entry and insert into a the packet list.*/ + pReorderEntry->SeqNum = SeqNum; + pReorderEntry->prxb = prxb; + // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): pREorderEntry->SeqNum is %d\n",__FUNCTION__,pReorderEntry->SeqNum); + +#if 1 + if(!AddReorderEntry(pTS, pReorderEntry)) { + IEEE80211_DEBUG(IEEE80211_DL_REORDER, "%s(): Duplicate packet is dropped!! IndicateSeq: %d, NewSeq: %d\n", + __FUNCTION__, pTS->RxIndicateSeq, SeqNum); + list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List); + { + int i; + for(i =0; i < prxb->nr_subframes; i++) { + dev_kfree_skb(prxb->subframes[i]); + } + kfree(prxb); + prxb = NULL; + } + } else { + IEEE80211_DEBUG(IEEE80211_DL_REORDER, + "Pkt insert into buffer!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum); + } +#endif + } + else { + /* + * Packets are dropped if there is not enough reorder entries. + * This part shall be modified!! We can just indicate all the + * packets in buffer and get reorder entries. + */ + IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): There is no reorder entry!! Packet is dropped!!\n"); + { + int i; + for(i =0; i < prxb->nr_subframes; i++) { + dev_kfree_skb(prxb->subframes[i]); + } + kfree(prxb); + prxb = NULL; + } + } + } + + /* Check if there is any packet need indicate.*/ + while(!list_empty(&pTS->RxPendingPktList)) { + IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): start RREORDER indicate\n",__FUNCTION__); +#if 1 + pReorderEntry = (PRX_REORDER_ENTRY)list_entry(pTS->RxPendingPktList.prev,RX_REORDER_ENTRY,List); + if( SN_LESS(pReorderEntry->SeqNum, pTS->RxIndicateSeq) || + SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq)) + { + /* This protect buffer from overflow. */ + if(index >= REORDER_WIN_SIZE) { + IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Buffer overflow!! \n"); + bPktInBuf = true; + break; + } + + list_del_init(&pReorderEntry->List); + + if(SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq)) + pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096; + + IEEE80211_DEBUG(IEEE80211_DL_REORDER,"Packets indication!! IndicateSeq: %d, NewSeq: %d\n",pTS->RxIndicateSeq, SeqNum); + prxbIndicateArray[index] = pReorderEntry->prxb; + // printk("========================>%s(): pReorderEntry->SeqNum is %d\n",__FUNCTION__,pReorderEntry->SeqNum); + index++; + + list_add_tail(&pReorderEntry->List,&ieee->RxReorder_Unused_List); + } else { + bPktInBuf = true; + break; + } +#endif + } + + /* Handling pending timer. Set this timer to prevent from long time Rx buffering.*/ + if(index>0) { + // Cancel previous pending timer. + if(timer_pending(&pTS->RxPktPendingTimer)) + { + del_timer_sync(&pTS->RxPktPendingTimer); + } + // del_timer_sync(&pTS->RxPktPendingTimer); + pTS->RxTimeoutIndicateSeq = 0xffff; + + // Indicate packets + if(index>REORDER_WIN_SIZE){ + IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Rx Reorer buffer full!! \n"); + return; + } + ieee80211_indicate_packets(ieee, prxbIndicateArray, index); + bPktInBuf = false; + } + +#if 1 + if(bPktInBuf && pTS->RxTimeoutIndicateSeq==0xffff) { + // Set new pending timer. + IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): SET rx timeout timer\n", __FUNCTION__); + pTS->RxTimeoutIndicateSeq = pTS->RxIndicateSeq; +#if 0 + if(timer_pending(&pTS->RxPktPendingTimer)) + del_timer_sync(&pTS->RxPktPendingTimer); + pTS->RxPktPendingTimer.expires = jiffies + MSECS(pHTInfo->RxReorderPendingTime); + add_timer(&pTS->RxPktPendingTimer); +#else + mod_timer(&pTS->RxPktPendingTimer, jiffies + MSECS(pHTInfo->RxReorderPendingTime)); +#endif + } +#endif +} + +u8 parse_subframe(struct sk_buff *skb, + struct ieee80211_rx_stats *rx_stats, + struct ieee80211_rxb *rxb,u8* src,u8* dst) +{ + struct ieee80211_hdr_3addr *hdr = (struct ieee80211_hdr_3addr* )skb->data; + u16 fc = le16_to_cpu(hdr->frame_ctl); + + u16 LLCOffset= sizeof(struct ieee80211_hdr_3addr); + u16 ChkLength; + bool bIsAggregateFrame = false; + u16 nSubframe_Length; + u8 nPadding_Length = 0; + u16 SeqNum=0; + + struct sk_buff *sub_skb; + u8 *data_ptr; + /* just for debug purpose */ + SeqNum = WLAN_GET_SEQ_SEQ(le16_to_cpu(hdr->seq_ctl)); + + if((IEEE80211_QOS_HAS_SEQ(fc))&&\ + (((frameqos *)(skb->data + IEEE80211_3ADDR_LEN))->field.reserved)) { + bIsAggregateFrame = true; + } + + if(IEEE80211_QOS_HAS_SEQ(fc)) { + LLCOffset += 2; + } + + if(rx_stats->bContainHTC) { + LLCOffset += sHTCLng; + } + //printk("ChkLength = %d\n", LLCOffset); + // Null packet, don't indicate it to upper layer + ChkLength = LLCOffset;/* + (Frame_WEP(frame)!=0 ?Adapter->MgntInfo.SecurityInfo.EncryptionHeadOverhead:0);*/ + + if( skb->len <= ChkLength ) { + return 0; + } + + skb_pull(skb, LLCOffset); + + if(!bIsAggregateFrame) { + rxb->nr_subframes = 1; +#ifdef JOHN_NOCPY + rxb->subframes[0] = skb; +#else + rxb->subframes[0] = skb_copy(skb, GFP_ATOMIC); +#endif + + memcpy(rxb->src,src,ETH_ALEN); + memcpy(rxb->dst,dst,ETH_ALEN); + //IEEE80211_DEBUG_DATA(IEEE80211_DL_RX,skb->data,skb->len); + return 1; + } else { + rxb->nr_subframes = 0; + memcpy(rxb->src,src,ETH_ALEN); + memcpy(rxb->dst,dst,ETH_ALEN); + while(skb->len > ETHERNET_HEADER_SIZE) { + /* Offset 12 denote 2 mac address */ + nSubframe_Length = *((u16*)(skb->data + 12)); + //==m==>change the length order + nSubframe_Length = (nSubframe_Length>>8) + (nSubframe_Length<<8); + + if(skb->len<(ETHERNET_HEADER_SIZE + nSubframe_Length)) { +#if 0//cosa + RT_ASSERT( + (nRemain_Length>=(ETHERNET_HEADER_SIZE + nSubframe_Length)), + ("ParseSubframe(): A-MSDU subframe parse error!! Subframe Length: %d\n", nSubframe_Length) ); +#endif + printk("%s: A-MSDU parse error!! pRfd->nTotalSubframe : %d\n",\ + __FUNCTION__,rxb->nr_subframes); + printk("%s: A-MSDU parse error!! Subframe Length: %d\n",__FUNCTION__, nSubframe_Length); + printk("nRemain_Length is %d and nSubframe_Length is : %d\n",skb->len,nSubframe_Length); + printk("The Packet SeqNum is %d\n",SeqNum); + return 0; + } + + /* move the data point to data content */ + skb_pull(skb, ETHERNET_HEADER_SIZE); + +#ifdef JOHN_NOCPY + sub_skb = skb_clone(skb, GFP_ATOMIC); + sub_skb->len = nSubframe_Length; + sub_skb->tail = sub_skb->data + nSubframe_Length; +#else + /* Allocate new skb for releasing to upper layer */ + sub_skb = dev_alloc_skb(nSubframe_Length + 12); + skb_reserve(sub_skb, 12); + data_ptr = (u8 *)skb_put(sub_skb, nSubframe_Length); + memcpy(data_ptr,skb->data,nSubframe_Length); +#endif + rxb->subframes[rxb->nr_subframes++] = sub_skb; + if(rxb->nr_subframes >= MAX_SUBFRAME_COUNT) { + IEEE80211_DEBUG_RX("ParseSubframe(): Too many Subframes! Packets dropped!\n"); + break; + } + skb_pull(skb,nSubframe_Length); + + if(skb->len != 0) { + nPadding_Length = 4 - ((nSubframe_Length + ETHERNET_HEADER_SIZE) % 4); + if(nPadding_Length == 4) { + nPadding_Length = 0; + } + + if(skb->len < nPadding_Length) { + return 0; + } + + skb_pull(skb,nPadding_Length); + } + } +#ifdef JOHN_NOCPY + dev_kfree_skb(skb); +#endif + //{just for debug added by david + //printk("AMSDU::rxb->nr_subframes = %d\n",rxb->nr_subframes); + //} + return rxb->nr_subframes; + } +} + +/* All received frames are sent to this function. @skb contains the frame in + * IEEE 802.11 format, i.e., in the format it was sent over air. + * This function is called only as a tasklet (software IRQ). */ +int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb, + struct ieee80211_rx_stats *rx_stats) +{ + struct net_device *dev = ieee->dev; + struct ieee80211_hdr_4addr *hdr; + //struct ieee80211_hdr_3addrqos *hdr; + + size_t hdrlen; + u16 fc, type, stype, sc; + struct net_device_stats *stats; + unsigned int frag; + u8 *payload; + u16 ethertype; + //added by amy for reorder + u8 TID = 0; + u16 SeqNum = 0; + PRX_TS_RECORD pTS = NULL; + //bool bIsAggregateFrame = false; + //added by amy for reorder +#ifdef NOT_YET + struct net_device *wds = NULL; + struct sk_buff *skb2 = NULL; + struct net_device *wds = NULL; + int frame_authorized = 0; + int from_assoc_ap = 0; + void *sta = NULL; +#endif +// u16 qos_ctl = 0; + u8 dst[ETH_ALEN]; + u8 src[ETH_ALEN]; + u8 bssid[ETH_ALEN]; + struct ieee80211_crypt_data *crypt = NULL; + int keyidx = 0; + + int i; + struct ieee80211_rxb* rxb = NULL; + // cheat the the hdr type + hdr = (struct ieee80211_hdr_4addr *)skb->data; + stats = &ieee->stats; + + if (skb->len < 10) { + printk(KERN_INFO "%s: SKB length < 10\n", + dev->name); + goto rx_dropped; + } + + fc = le16_to_cpu(hdr->frame_ctl); + type = WLAN_FC_GET_TYPE(fc); + stype = WLAN_FC_GET_STYPE(fc); + sc = le16_to_cpu(hdr->seq_ctl); + + frag = WLAN_GET_SEQ_FRAG(sc); + hdrlen = ieee80211_get_hdrlen(fc); + + if(HTCCheck(ieee, skb->data)) + { + if(net_ratelimit()) + printk("find HTCControl\n"); + hdrlen += 4; + rx_stats->bContainHTC = 1; + } + + //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len); +#ifdef NOT_YET +#if WIRELESS_EXT > 15 + /* Put this code here so that we avoid duplicating it in all + * Rx paths. - Jean II */ +#ifdef IW_WIRELESS_SPY /* defined in iw_handler.h */ + /* If spy monitoring on */ + if (iface->spy_data.spy_number > 0) { + struct iw_quality wstats; + wstats.level = rx_stats->rssi; + wstats.noise = rx_stats->noise; + wstats.updated = 6; /* No qual value */ + /* Update spy records */ + wireless_spy_update(dev, hdr->addr2, &wstats); + } +#endif /* IW_WIRELESS_SPY */ +#endif /* WIRELESS_EXT > 15 */ + hostap_update_rx_stats(local->ap, hdr, rx_stats); +#endif + +#if WIRELESS_EXT > 15 + if (ieee->iw_mode == IW_MODE_MONITOR) { + ieee80211_monitor_rx(ieee, skb, rx_stats); + stats->rx_packets++; + stats->rx_bytes += skb->len; + return 1; + } +#endif + if (ieee->host_decrypt) { + int idx = 0; + if (skb->len >= hdrlen + 3) + idx = skb->data[hdrlen + 3] >> 6; + crypt = ieee->crypt[idx]; +#ifdef NOT_YET + sta = NULL; + + /* Use station specific key to override default keys if the + * receiver address is a unicast address ("individual RA"). If + * bcrx_sta_key parameter is set, station specific key is used + * even with broad/multicast targets (this is against IEEE + * 802.11, but makes it easier to use different keys with + * stations that do not support WEP key mapping). */ + + if (!(hdr->addr1[0] & 0x01) || local->bcrx_sta_key) + (void) hostap_handle_sta_crypto(local, hdr, &crypt, + &sta); +#endif + + /* allow NULL decrypt to indicate an station specific override + * for default encryption */ + if (crypt && (crypt->ops == NULL || + crypt->ops->decrypt_mpdu == NULL)) + crypt = NULL; + + if (!crypt && (fc & IEEE80211_FCTL_WEP)) { + /* This seems to be triggered by some (multicast?) + * frames from other than current BSS, so just drop the + * frames silently instead of filling system log with + * these reports. */ + IEEE80211_DEBUG_DROP("Decryption failed (not set)" + " (SA=" MAC_FMT ")\n", + MAC_ARG(hdr->addr2)); + ieee->ieee_stats.rx_discards_undecryptable++; + goto rx_dropped; + } + } + + if (skb->len < IEEE80211_DATA_HDR3_LEN) + goto rx_dropped; + + // if QoS enabled, should check the sequence for each of the AC + if( (ieee->pHTInfo->bCurRxReorderEnable == false) || !ieee->current_network.qos_data.active|| !IsDataFrame(skb->data) || IsLegacyDataFrame(skb->data)){ + if (is_duplicate_packet(ieee, hdr)) + goto rx_dropped; + + } + else + { + PRX_TS_RECORD pRxTS = NULL; + #if 0 + struct ieee80211_hdr_3addr *hdr; + u16 fc; + hdr = (struct ieee80211_hdr_3addr *)skb->data; + fc = le16_to_cpu(hdr->frame_ctl); + u8 tmp = (fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS); + + u8 tid = (*((u8*)skb->data + (((fc& IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))?30:24)))&0xf; + printk("====================>fc:%x, tid:%d, tmp:%d\n", fc, tid, tmp); + //u8 tid = (u8)((frameqos*)(buf + ((fc & IEEE80211_FCTL_TODS)&&(fc & IEEE80211_FCTL_FROMDS))? 30 : 24))->field.tid; + #endif + //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): QOS ENABLE AND RECEIVE QOS DATA , we will get Ts, tid:%d\n",__FUNCTION__, tid); +#if 1 + if(GetTs( + ieee, + (PTS_COMMON_INFO*) &pRxTS, + hdr->addr2, + (u8)Frame_QoSTID((u8*)(skb->data)), + RX_DIR, + true)) + { + + // 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)); + if( (fc & (1<<11)) && + (frag == pRxTS->RxLastFragNum) && + (WLAN_GET_SEQ_SEQ(sc) == pRxTS->RxLastSeqNum) ) + { + goto rx_dropped; + } + else + { + pRxTS->RxLastFragNum = frag; + pRxTS->RxLastSeqNum = WLAN_GET_SEQ_SEQ(sc); + } + } + else + { + IEEE80211_DEBUG(IEEE80211_DL_ERR, "%s(): No TS!! Skip the check!!\n",__FUNCTION__); + goto rx_dropped; + } + } +#endif + if (type == IEEE80211_FTYPE_MGMT) { + + #if 0 + if ( stype == IEEE80211_STYPE_AUTH && + fc & IEEE80211_FCTL_WEP && ieee->host_decrypt && + (keyidx = hostap_rx_frame_decrypt(ieee, skb, crypt)) < 0) + { + printk(KERN_DEBUG "%s: failed to decrypt mgmt::auth " + "from " MAC_FMT "\n", dev->name, + MAC_ARG(hdr->addr2)); + /* TODO: could inform hostapd about this so that it + * could send auth failure report */ + goto rx_dropped; + } + #endif + + //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len); + if (ieee80211_rx_frame_mgmt(ieee, skb, rx_stats, type, stype)) + goto rx_dropped; + else + goto rx_exit; + } + + /* Data frame - extract src/dst addresses */ + switch (fc & (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) { + case IEEE80211_FCTL_FROMDS: + memcpy(dst, hdr->addr1, ETH_ALEN); + memcpy(src, hdr->addr3, ETH_ALEN); + memcpy(bssid, hdr->addr2, ETH_ALEN); + break; + case IEEE80211_FCTL_TODS: + memcpy(dst, hdr->addr3, ETH_ALEN); + memcpy(src, hdr->addr2, ETH_ALEN); + memcpy(bssid, hdr->addr1, ETH_ALEN); + break; + case IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS: + if (skb->len < IEEE80211_DATA_HDR4_LEN) + goto rx_dropped; + memcpy(dst, hdr->addr3, ETH_ALEN); + memcpy(src, hdr->addr4, ETH_ALEN); + memcpy(bssid, ieee->current_network.bssid, ETH_ALEN); + break; + case 0: + memcpy(dst, hdr->addr1, ETH_ALEN); + memcpy(src, hdr->addr2, ETH_ALEN); + memcpy(bssid, hdr->addr3, ETH_ALEN); + break; + } + +#ifdef NOT_YET + if (hostap_rx_frame_wds(ieee, hdr, fc, &wds)) + goto rx_dropped; + if (wds) { + skb->dev = dev = wds; + stats = hostap_get_stats(dev); + } + + if (ieee->iw_mode == IW_MODE_MASTER && !wds && + (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == IEEE80211_FCTL_FROMDS && + ieee->stadev && + memcmp(hdr->addr2, ieee->assoc_ap_addr, ETH_ALEN) == 0) { + /* Frame from BSSID of the AP for which we are a client */ + skb->dev = dev = ieee->stadev; + stats = hostap_get_stats(dev); + from_assoc_ap = 1; + } +#endif + + dev->last_rx = jiffies; + +#ifdef NOT_YET + if ((ieee->iw_mode == IW_MODE_MASTER || + ieee->iw_mode == IW_MODE_REPEAT) && + !from_assoc_ap) { + switch (hostap_handle_sta_rx(ieee, dev, skb, rx_stats, + wds != NULL)) { + case AP_RX_CONTINUE_NOT_AUTHORIZED: + frame_authorized = 0; + break; + case AP_RX_CONTINUE: + frame_authorized = 1; + break; + case AP_RX_DROP: + goto rx_dropped; + case AP_RX_EXIT: + goto rx_exit; + } + } +#endif + //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len); + /* Nullfunc frames may have PS-bit set, so they must be passed to + * hostap_handle_sta_rx() before being dropped here. */ + if (stype != IEEE80211_STYPE_DATA && + stype != IEEE80211_STYPE_DATA_CFACK && + stype != IEEE80211_STYPE_DATA_CFPOLL && + stype != IEEE80211_STYPE_DATA_CFACKPOLL&& + stype != IEEE80211_STYPE_QOS_DATA//add by David,2006.8.4 + ) { + if (stype != IEEE80211_STYPE_NULLFUNC) + IEEE80211_DEBUG_DROP( + "RX: dropped data frame " + "with no data (type=0x%02x, " + "subtype=0x%02x, len=%d)\n", + type, stype, skb->len); + goto rx_dropped; + } + if (memcmp(bssid, ieee->current_network.bssid, ETH_ALEN)) + goto rx_dropped; + + /* skb: hdr + (possibly fragmented, possibly encrypted) payload */ + + if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) && + (keyidx = ieee80211_rx_frame_decrypt(ieee, skb, crypt)) < 0) + { + printk("decrypt frame error\n"); + goto rx_dropped; + } + + + hdr = (struct ieee80211_hdr_4addr *) skb->data; + + /* skb: hdr + (possibly fragmented) plaintext payload */ + // PR: FIXME: hostap has additional conditions in the "if" below: + // ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) && + if ((frag != 0 || (fc & IEEE80211_FCTL_MOREFRAGS))) { + int flen; + struct sk_buff *frag_skb = ieee80211_frag_cache_get(ieee, hdr); + IEEE80211_DEBUG_FRAG("Rx Fragment received (%u)\n", frag); + + if (!frag_skb) { + IEEE80211_DEBUG(IEEE80211_DL_RX | IEEE80211_DL_FRAG, + "Rx cannot get skb from fragment " + "cache (morefrag=%d seq=%u frag=%u)\n", + (fc & IEEE80211_FCTL_MOREFRAGS) != 0, + WLAN_GET_SEQ_SEQ(sc), frag); + goto rx_dropped; + } + flen = skb->len; + if (frag != 0) + flen -= hdrlen; + + if (frag_skb->tail + flen > frag_skb->end) { + printk(KERN_WARNING "%s: host decrypted and " + "reassembled frame did not fit skb\n", + dev->name); + ieee80211_frag_cache_invalidate(ieee, hdr); + goto rx_dropped; + } + + if (frag == 0) { + /* copy first fragment (including full headers) into + * beginning of the fragment cache skb */ + memcpy(skb_put(frag_skb, flen), skb->data, flen); + } else { + /* append frame payload to the end of the fragment + * cache skb */ + memcpy(skb_put(frag_skb, flen), skb->data + hdrlen, + flen); + } + dev_kfree_skb_any(skb); + skb = NULL; + + if (fc & IEEE80211_FCTL_MOREFRAGS) { + /* more fragments expected - leave the skb in fragment + * cache for now; it will be delivered to upper layers + * after all fragments have been received */ + goto rx_exit; + } + + /* this was the last fragment and the frame will be + * delivered, so remove skb from fragment cache */ + skb = frag_skb; + hdr = (struct ieee80211_hdr_4addr *) skb->data; + ieee80211_frag_cache_invalidate(ieee, hdr); + } + + /* skb: hdr + (possible reassembled) full MSDU payload; possibly still + * encrypted/authenticated */ + if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) && + ieee80211_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt)) + { + printk("==>decrypt msdu error\n"); + goto rx_dropped; + } + + //added by amy for AP roaming + ieee->LinkDetectInfo.NumRecvDataInPeriod++; + ieee->LinkDetectInfo.NumRxOkInPeriod++; + + hdr = (struct ieee80211_hdr_4addr *) skb->data; + if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep) { + if (/*ieee->ieee802_1x &&*/ + ieee80211_is_eapol_frame(ieee, skb, hdrlen)) { + +#ifdef CONFIG_IEEE80211_DEBUG + /* pass unencrypted EAPOL frames even if encryption is + * configured */ + struct eapol *eap = (struct eapol *)(skb->data + + 24); + IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n", + eap_get_type(eap->type)); +#endif + } else { + IEEE80211_DEBUG_DROP( + "encryption configured, but RX " + "frame not encrypted (SA=" MAC_FMT ")\n", + MAC_ARG(hdr->addr2)); + goto rx_dropped; + } + } + +#ifdef CONFIG_IEEE80211_DEBUG + if (crypt && !(fc & IEEE80211_FCTL_WEP) && + ieee80211_is_eapol_frame(ieee, skb, hdrlen)) { + struct eapol *eap = (struct eapol *)(skb->data + + 24); + IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n", + eap_get_type(eap->type)); + } +#endif + + if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep && + !ieee80211_is_eapol_frame(ieee, skb, hdrlen)) { + IEEE80211_DEBUG_DROP( + "dropped unencrypted RX data " + "frame from " MAC_FMT + " (drop_unencrypted=1)\n", + MAC_ARG(hdr->addr2)); + goto rx_dropped; + } +/* + if(ieee80211_is_eapol_frame(ieee, skb, hdrlen)) { + printk(KERN_WARNING "RX: IEEE802.1X EPAOL frame!\n"); + } +*/ +//added by amy for reorder +#if 1 + if(ieee->current_network.qos_data.active && IsQoSDataFrame(skb->data) + && !is_multicast_ether_addr(hdr->addr1) && !is_broadcast_ether_addr(hdr->addr1)) + { + TID = Frame_QoSTID(skb->data); + SeqNum = WLAN_GET_SEQ_SEQ(sc); + GetTs(ieee,(PTS_COMMON_INFO*) &pTS,hdr->addr2,TID,RX_DIR,true); + if(TID !=0 && TID !=3) + { + ieee->bis_any_nonbepkts = true; + } + } +#endif +//added by amy for reorder + /* skb: hdr + (possible reassembled) full plaintext payload */ + payload = skb->data + hdrlen; + //ethertype = (payload[6] << 8) | payload[7]; + rxb = (struct ieee80211_rxb*)kmalloc(sizeof(struct ieee80211_rxb),GFP_ATOMIC); + if(rxb == NULL) + { + IEEE80211_DEBUG(IEEE80211_DL_ERR,"%s(): kmalloc rxb error\n",__FUNCTION__); + goto rx_dropped; + } + /* to parse amsdu packets */ + /* qos data packets & reserved bit is 1 */ + if(parse_subframe(skb,rx_stats,rxb,src,dst) == 0) { + /* only to free rxb, and not submit the packets to upper layer */ + for(i =0; i < rxb->nr_subframes; i++) { + dev_kfree_skb(rxb->subframes[i]); + } + kfree(rxb); + rxb = NULL; + goto rx_dropped; + } + + ieee->last_rx_ps_time = jiffies; +//added by amy for reorder + if(ieee->pHTInfo->bCurRxReorderEnable == false ||pTS == NULL){ +//added by amy for reorder + for(i = 0; i<rxb->nr_subframes; i++) { + struct sk_buff *sub_skb = rxb->subframes[i]; + + if (sub_skb) { + /* convert hdr + possible LLC headers into Ethernet header */ + ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7]; + if (sub_skb->len >= 8 && + ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 && + ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) || + memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) { + /* remove RFC1042 or Bridge-Tunnel encapsulation and + * replace EtherType */ + skb_pull(sub_skb, SNAP_SIZE); + memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN); + memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN); + } else { + u16 len; + /* Leave Ethernet header part of hdr and full payload */ + len = htons(sub_skb->len); + memcpy(skb_push(sub_skb, 2), &len, 2); + memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN); + memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN); + } + + stats->rx_packets++; + stats->rx_bytes += sub_skb->len; + if(is_multicast_ether_addr(dst)) { + stats->multicast++; + } + + /* Indicat the packets to upper layer */ + //printk("0skb_len(%d)\n", skb->len); + sub_skb->protocol = eth_type_trans(sub_skb, dev); + memset(sub_skb->cb, 0, sizeof(sub_skb->cb)); + sub_skb->dev = dev; + sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */ + //skb->ip_summed = CHECKSUM_UNNECESSARY; /* 802.11 crc not sufficient */ + //printk("1skb_len(%d)\n", skb->len); + netif_rx(sub_skb); + } + } + kfree(rxb); + rxb = NULL; + + } + else + { + IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): REORDER ENABLE AND PTS not NULL, and we will enter RxReorderIndicatePacket()\n",__FUNCTION__); + RxReorderIndicatePacket(ieee, rxb, pTS, SeqNum); + } +#ifndef JOHN_NOCPY + dev_kfree_skb(skb); +#endif + + rx_exit: +#ifdef NOT_YET + if (sta) + hostap_handle_sta_release(sta); +#endif + return 1; + + rx_dropped: + if (rxb != NULL) + { + kfree(rxb); + rxb = NULL; + } + stats->rx_dropped++; + + /* Returning 0 indicates to caller that we have not handled the SKB-- + * so it is still allocated and can be used again by underlying + * hardware as a DMA target */ + return 0; +} + +#define MGMT_FRAME_FIXED_PART_LENGTH 0x24 + +static u8 qos_oui[QOS_OUI_LEN] = { 0x00, 0x50, 0xF2 }; + +/* +* Make ther structure we read from the beacon packet has +* the right values +*/ +static int ieee80211_verify_qos_info(struct ieee80211_qos_information_element + *info_element, int sub_type) +{ + + if (info_element->qui_subtype != sub_type) + return -1; + if (memcmp(info_element->qui, qos_oui, QOS_OUI_LEN)) + return -1; + if (info_element->qui_type != QOS_OUI_TYPE) + return -1; + if (info_element->version != QOS_VERSION_1) + return -1; + + return 0; +} + + +/* + * Parse a QoS parameter element + */ +static int ieee80211_read_qos_param_element(struct ieee80211_qos_parameter_info + *element_param, struct ieee80211_info_element + *info_element) +{ + int ret = 0; + u16 size = sizeof(struct ieee80211_qos_parameter_info) - 2; + + if ((info_element == NULL) || (element_param == NULL)) + return -1; + + if (info_element->id == QOS_ELEMENT_ID && info_element->len == size) { + memcpy(element_param->info_element.qui, info_element->data, + info_element->len); + element_param->info_element.elementID = info_element->id; + element_param->info_element.length = info_element->len; + } else + ret = -1; + if (ret == 0) + ret = ieee80211_verify_qos_info(&element_param->info_element, + QOS_OUI_PARAM_SUB_TYPE); + return ret; +} + +/* + * Parse a QoS information element + */ +static int ieee80211_read_qos_info_element(struct + ieee80211_qos_information_element + *element_info, struct ieee80211_info_element + *info_element) +{ + int ret = 0; + u16 size = sizeof(struct ieee80211_qos_information_element) - 2; + + if (element_info == NULL) + return -1; + if (info_element == NULL) + return -1; + + if ((info_element->id == QOS_ELEMENT_ID) && (info_element->len == size)) { + memcpy(element_info->qui, info_element->data, + info_element->len); + element_info->elementID = info_element->id; + element_info->length = info_element->len; + } else + ret = -1; + + if (ret == 0) + ret = ieee80211_verify_qos_info(element_info, + QOS_OUI_INFO_SUB_TYPE); + return ret; +} + + +/* + * Write QoS parameters from the ac parameters. + */ +static int ieee80211_qos_convert_ac_to_parameters(struct + ieee80211_qos_parameter_info + *param_elm, struct + ieee80211_qos_parameters + *qos_param) +{ + int rc = 0; + int i; + struct ieee80211_qos_ac_parameter *ac_params; + u8 aci; + //u8 cw_min; + //u8 cw_max; + + for (i = 0; i < QOS_QUEUE_NUM; i++) { + ac_params = &(param_elm->ac_params_record[i]); + + aci = (ac_params->aci_aifsn & 0x60) >> 5; + + if(aci >= QOS_QUEUE_NUM) + continue; + qos_param->aifs[aci] = (ac_params->aci_aifsn) & 0x0f; + + /* WMM spec P.11: The minimum value for AIFSN shall be 2 */ + qos_param->aifs[aci] = (qos_param->aifs[aci] < 2) ? 2:qos_param->aifs[aci]; + + qos_param->cw_min[aci] = ac_params->ecw_min_max & 0x0F; + + qos_param->cw_max[aci] = (ac_params->ecw_min_max & 0xF0) >> 4; + + qos_param->flag[aci] = + (ac_params->aci_aifsn & 0x10) ? 0x01 : 0x00; + qos_param->tx_op_limit[aci] = le16_to_cpu(ac_params->tx_op_limit); + } + return rc; +} + +/* + * we have a generic data element which it may contain QoS information or + * parameters element. check the information element length to decide + * which type to read + */ +static int ieee80211_parse_qos_info_param_IE(struct ieee80211_info_element + *info_element, + struct ieee80211_network *network) +{ + int rc = 0; + struct ieee80211_qos_parameters *qos_param = NULL; + struct ieee80211_qos_information_element qos_info_element; + + rc = ieee80211_read_qos_info_element(&qos_info_element, info_element); + + if (rc == 0) { + network->qos_data.param_count = qos_info_element.ac_info & 0x0F; + network->flags |= NETWORK_HAS_QOS_INFORMATION; + } else { + struct ieee80211_qos_parameter_info param_element; + + rc = ieee80211_read_qos_param_element(¶m_element, + info_element); + if (rc == 0) { + qos_param = &(network->qos_data.parameters); + ieee80211_qos_convert_ac_to_parameters(¶m_element, + qos_param); + network->flags |= NETWORK_HAS_QOS_PARAMETERS; + network->qos_data.param_count = + param_element.info_element.ac_info & 0x0F; + } + } + + if (rc == 0) { + IEEE80211_DEBUG_QOS("QoS is supported\n"); + network->qos_data.supported = 1; + } + return rc; +} + +#ifdef CONFIG_IEEE80211_DEBUG +#define MFIE_STRING(x) case MFIE_TYPE_ ##x: return #x + +static const char *get_info_element_string(u16 id) +{ + switch (id) { + MFIE_STRING(SSID); + MFIE_STRING(RATES); + MFIE_STRING(FH_SET); + MFIE_STRING(DS_SET); + MFIE_STRING(CF_SET); + MFIE_STRING(TIM); + MFIE_STRING(IBSS_SET); + MFIE_STRING(COUNTRY); + MFIE_STRING(HOP_PARAMS); + MFIE_STRING(HOP_TABLE); + MFIE_STRING(REQUEST); + MFIE_STRING(CHALLENGE); + MFIE_STRING(POWER_CONSTRAINT); + MFIE_STRING(POWER_CAPABILITY); + MFIE_STRING(TPC_REQUEST); + MFIE_STRING(TPC_REPORT); + MFIE_STRING(SUPP_CHANNELS); + MFIE_STRING(CSA); + MFIE_STRING(MEASURE_REQUEST); + MFIE_STRING(MEASURE_REPORT); + MFIE_STRING(QUIET); + MFIE_STRING(IBSS_DFS); + // MFIE_STRING(ERP_INFO); + MFIE_STRING(RSN); + MFIE_STRING(RATES_EX); + MFIE_STRING(GENERIC); + MFIE_STRING(QOS_PARAMETER); + default: + return "UNKNOWN"; + } +} +#endif + +#ifdef ENABLE_DOT11D +static inline void ieee80211_extract_country_ie( + struct ieee80211_device *ieee, + struct ieee80211_info_element *info_element, + struct ieee80211_network *network, + u8 * addr2 +) +{ + if(IS_DOT11D_ENABLE(ieee)) + { + if(info_element->len!= 0) + { + memcpy(network->CountryIeBuf, info_element->data, info_element->len); + network->CountryIeLen = info_element->len; + + if(!IS_COUNTRY_IE_VALID(ieee)) + { + Dot11d_UpdateCountryIe(ieee, addr2, info_element->len, info_element->data); + } + } + + // + // 070305, rcnjko: I update country IE watch dog here because + // some AP (e.g. Cisco 1242) don't include country IE in their + // probe response frame. + // + if(IS_EQUAL_CIE_SRC(ieee, addr2) ) + { + UPDATE_CIE_WATCHDOG(ieee); + } + } + +} +#endif + +int ieee80211_parse_info_param(struct ieee80211_device *ieee, + struct ieee80211_info_element *info_element, + u16 length, + struct ieee80211_network *network, + struct ieee80211_rx_stats *stats) +{ + u8 i; + short offset; + u16 tmp_htcap_len=0; + u16 tmp_htinfo_len=0; + u16 ht_realtek_agg_len=0; + u8 ht_realtek_agg_buf[MAX_IE_LEN]; +// u16 broadcom_len = 0; +#ifdef CONFIG_IEEE80211_DEBUG + char rates_str[64]; + char *p; +#endif + + while (length >= sizeof(*info_element)) { + if (sizeof(*info_element) + info_element->len > length) { + IEEE80211_DEBUG_MGMT("Info elem: parse failed: " + "info_element->len + 2 > left : " + "info_element->len+2=%zd left=%d, id=%d.\n", + info_element->len + + sizeof(*info_element), + length, info_element->id); + /* We stop processing but don't return an error here + * because some misbehaviour APs break this rule. ie. + * Orinoco AP1000. */ + break; + } + + switch (info_element->id) { + case MFIE_TYPE_SSID: + if (ieee80211_is_empty_essid(info_element->data, + info_element->len)) { + network->flags |= NETWORK_EMPTY_ESSID; + break; + } + + network->ssid_len = min(info_element->len, + (u8) IW_ESSID_MAX_SIZE); + memcpy(network->ssid, info_element->data, network->ssid_len); + if (network->ssid_len < IW_ESSID_MAX_SIZE) + memset(network->ssid + network->ssid_len, 0, + IW_ESSID_MAX_SIZE - network->ssid_len); + + IEEE80211_DEBUG_MGMT("MFIE_TYPE_SSID: '%s' len=%d.\n", + network->ssid, network->ssid_len); + break; + + case MFIE_TYPE_RATES: +#ifdef CONFIG_IEEE80211_DEBUG + p = rates_str; +#endif + network->rates_len = min(info_element->len, + MAX_RATES_LENGTH); + for (i = 0; i < network->rates_len; i++) { + network->rates[i] = info_element->data[i]; +#ifdef CONFIG_IEEE80211_DEBUG + p += snprintf(p, sizeof(rates_str) - + (p - rates_str), "%02X ", + network->rates[i]); +#endif + if (ieee80211_is_ofdm_rate + (info_element->data[i])) { + network->flags |= NETWORK_HAS_OFDM; + if (info_element->data[i] & + IEEE80211_BASIC_RATE_MASK) + network->flags &= + ~NETWORK_HAS_CCK; + } + } + + IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES: '%s' (%d)\n", + rates_str, network->rates_len); + break; + + case MFIE_TYPE_RATES_EX: +#ifdef CONFIG_IEEE80211_DEBUG + p = rates_str; +#endif + network->rates_ex_len = min(info_element->len, + MAX_RATES_EX_LENGTH); + for (i = 0; i < network->rates_ex_len; i++) { + network->rates_ex[i] = info_element->data[i]; +#ifdef CONFIG_IEEE80211_DEBUG + p += snprintf(p, sizeof(rates_str) - + (p - rates_str), "%02X ", + network->rates[i]); +#endif + if (ieee80211_is_ofdm_rate + (info_element->data[i])) { + network->flags |= NETWORK_HAS_OFDM; + if (info_element->data[i] & + IEEE80211_BASIC_RATE_MASK) + network->flags &= + ~NETWORK_HAS_CCK; + } + } + + IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES_EX: '%s' (%d)\n", + rates_str, network->rates_ex_len); + break; + + case MFIE_TYPE_DS_SET: + IEEE80211_DEBUG_MGMT("MFIE_TYPE_DS_SET: %d\n", + info_element->data[0]); + network->channel = info_element->data[0]; + break; + + case MFIE_TYPE_FH_SET: + IEEE80211_DEBUG_MGMT("MFIE_TYPE_FH_SET: ignored\n"); + break; + + case MFIE_TYPE_CF_SET: + IEEE80211_DEBUG_MGMT("MFIE_TYPE_CF_SET: ignored\n"); + break; + + case MFIE_TYPE_TIM: + if(info_element->len < 4) + break; + + network->tim.tim_count = info_element->data[0]; + network->tim.tim_period = info_element->data[1]; + + network->dtim_period = info_element->data[1]; + if(ieee->state != IEEE80211_LINKED) + break; +#if 0 + network->last_dtim_sta_time[0] = stats->mac_time[0]; +#else + //we use jiffies for legacy Power save + network->last_dtim_sta_time[0] = jiffies; +#endif + network->last_dtim_sta_time[1] = stats->mac_time[1]; + + network->dtim_data = IEEE80211_DTIM_VALID; + + if(info_element->data[0] != 0) + break; + + if(info_element->data[2] & 1) + network->dtim_data |= IEEE80211_DTIM_MBCAST; + + offset = (info_element->data[2] >> 1)*2; + + //printk("offset1:%x aid:%x\n",offset, ieee->assoc_id); + + if(ieee->assoc_id < 8*offset || + ieee->assoc_id > 8*(offset + info_element->len -3)) + + break; + + offset = (ieee->assoc_id / 8) - offset;// + ((aid % 8)? 0 : 1) ; + + if(info_element->data[3+offset] & (1<<(ieee->assoc_id%8))) + network->dtim_data |= IEEE80211_DTIM_UCAST; + + //IEEE80211_DEBUG_MGMT("MFIE_TYPE_TIM: partially ignored\n"); + break; + + case MFIE_TYPE_ERP: + network->erp_value = info_element->data[0]; + network->flags |= NETWORK_HAS_ERP_VALUE; + IEEE80211_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n", + network->erp_value); + break; + case MFIE_TYPE_IBSS_SET: + network->atim_window = info_element->data[0]; + IEEE80211_DEBUG_MGMT("MFIE_TYPE_IBSS_SET: %d\n", + network->atim_window); + break; + + case MFIE_TYPE_CHALLENGE: + IEEE80211_DEBUG_MGMT("MFIE_TYPE_CHALLENGE: ignored\n"); + break; + + case MFIE_TYPE_GENERIC: + IEEE80211_DEBUG_MGMT("MFIE_TYPE_GENERIC: %d bytes\n", + info_element->len); + if (!ieee80211_parse_qos_info_param_IE(info_element, + network)) + break; + + if (info_element->len >= 4 && + info_element->data[0] == 0x00 && + info_element->data[1] == 0x50 && + info_element->data[2] == 0xf2 && + info_element->data[3] == 0x01) { + network->wpa_ie_len = min(info_element->len + 2, + MAX_WPA_IE_LEN); + memcpy(network->wpa_ie, info_element, + network->wpa_ie_len); + break; + } + +#ifdef THOMAS_TURBO + if (info_element->len == 7 && + info_element->data[0] == 0x00 && + info_element->data[1] == 0xe0 && + info_element->data[2] == 0x4c && + info_element->data[3] == 0x01 && + info_element->data[4] == 0x02) { + network->Turbo_Enable = 1; + } +#endif + + //for HTcap and HTinfo parameters + if(tmp_htcap_len == 0){ + if(info_element->len >= 4 && + info_element->data[0] == 0x00 && + info_element->data[1] == 0x90 && + info_element->data[2] == 0x4c && + info_element->data[3] == 0x033){ + + tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN); + if(tmp_htcap_len != 0){ + network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC; + network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\ + sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len; + memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen); + } + } + if(tmp_htcap_len != 0){ + network->bssht.bdSupportHT = true; + network->bssht.bdHT1R = ((((PHT_CAPABILITY_ELE)(network->bssht.bdHTCapBuf))->MCS[1]) == 0); + }else{ + network->bssht.bdSupportHT = false; + network->bssht.bdHT1R = false; + } + } + + + if(tmp_htinfo_len == 0){ + if(info_element->len >= 4 && + info_element->data[0] == 0x00 && + info_element->data[1] == 0x90 && + info_element->data[2] == 0x4c && + info_element->data[3] == 0x034){ + + tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN); + if(tmp_htinfo_len != 0){ + network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC; + if(tmp_htinfo_len){ + network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\ + sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len; + memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen); + } + + } + + } + } + + if(ieee->aggregation){ + if(network->bssht.bdSupportHT){ + if(info_element->len >= 4 && + info_element->data[0] == 0x00 && + info_element->data[1] == 0xe0 && + info_element->data[2] == 0x4c && + info_element->data[3] == 0x02){ + + ht_realtek_agg_len = min(info_element->len,(u8)MAX_IE_LEN); + memcpy(ht_realtek_agg_buf,info_element->data,info_element->len); + + } + if(ht_realtek_agg_len >= 5){ + network->realtek_cap_exit = true; + network->bssht.bdRT2RTAggregation = true; + + if((ht_realtek_agg_buf[4] == 1) && (ht_realtek_agg_buf[5] & 0x02)) + network->bssht.bdRT2RTLongSlotTime = true; + + if((ht_realtek_agg_buf[4]==1) && (ht_realtek_agg_buf[5] & RT_HT_CAP_USE_92SE)) + { + network->bssht.RT2RT_HT_Mode |= RT_HT_CAP_USE_92SE; + //bssDesc->Vender = HT_IOT_PEER_REALTEK_92SE; + } + } + } + + } + + //if(tmp_htcap_len !=0 || tmp_htinfo_len != 0) + { + if((info_element->len >= 3 && + info_element->data[0] == 0x00 && + info_element->data[1] == 0x05 && + info_element->data[2] == 0xb5) || + (info_element->len >= 3 && + info_element->data[0] == 0x00 && + info_element->data[1] == 0x0a && + info_element->data[2] == 0xf7) || + (info_element->len >= 3 && + info_element->data[0] == 0x00 && + info_element->data[1] == 0x10 && + info_element->data[2] == 0x18)){ + + network->broadcom_cap_exist = true; + + } + } +#if 0 + if (tmp_htcap_len !=0) + { + u16 cap_ext = ((PHT_CAPABILITY_ELE)&info_element->data[0])->ExtHTCapInfo; + if ((cap_ext & 0x0c00) == 0x0c00) + { + network->ralink_cap_exist = true; + } + } +#endif + if(info_element->len >= 3 && + info_element->data[0] == 0x00 && + info_element->data[1] == 0x0c && + info_element->data[2] == 0x43) + { + network->ralink_cap_exist = true; + } + else + network->ralink_cap_exist = false; + //added by amy for atheros AP + if((info_element->len >= 3 && + info_element->data[0] == 0x00 && + info_element->data[1] == 0x03 && + info_element->data[2] == 0x7f) || + (info_element->len >= 3 && + info_element->data[0] == 0x00 && + info_element->data[1] == 0x13 && + info_element->data[2] == 0x74)) + { + // printk("========>%s(): athros AP is exist\n",__FUNCTION__); + network->atheros_cap_exist = true; + } + else + network->atheros_cap_exist = false; + + if ((info_element->len >= 3 && + info_element->data[0] == 0x00 && + info_element->data[1] == 0x50 && + info_element->data[2] == 0x43) ) + { + network->marvell_cap_exist = true; + } + else + network->marvell_cap_exist = false; + + if(info_element->len >= 3 && + info_element->data[0] == 0x00 && + info_element->data[1] == 0x40 && + info_element->data[2] == 0x96) + { + network->cisco_cap_exist = true; + } + else + network->cisco_cap_exist = false; + //added by amy for LEAP of cisco + if(info_element->len > 4 && + info_element->data[0] == 0x00 && + info_element->data[1] == 0x40 && + info_element->data[2] == 0x96 && + info_element->data[3] == 0x01) + { + if(info_element->len == 6) + { + memcpy(network->CcxRmState, &info_element[4], 2); + if(network->CcxRmState[0] != 0) + { + network->bCcxRmEnable = true; + } + else + network->bCcxRmEnable = false; + // + // CCXv4 Table 59-1 MBSSID Masks. + // + network->MBssidMask = network->CcxRmState[1] & 0x07; + if(network->MBssidMask != 0) + { + network->bMBssidValid = true; + network->MBssidMask = 0xff << (network->MBssidMask); + cpMacAddr(network->MBssid, network->bssid); + network->MBssid[5] &= network->MBssidMask; + } + else + { + network->bMBssidValid = false; + } + } + else + { + network->bCcxRmEnable = false; + } + } + if(info_element->len > 4 && + info_element->data[0] == 0x00 && + info_element->data[1] == 0x40 && + info_element->data[2] == 0x96 && + info_element->data[3] == 0x03) + { + if(info_element->len == 5) + { + network->bWithCcxVerNum = true; + network->BssCcxVerNumber = info_element->data[4]; + } + else + { + network->bWithCcxVerNum = false; + network->BssCcxVerNumber = 0; + } + } + break; + + case MFIE_TYPE_RSN: + IEEE80211_DEBUG_MGMT("MFIE_TYPE_RSN: %d bytes\n", + info_element->len); + network->rsn_ie_len = min(info_element->len + 2, + MAX_WPA_IE_LEN); + memcpy(network->rsn_ie, info_element, + network->rsn_ie_len); + break; + + //HT related element. + case MFIE_TYPE_HT_CAP: + IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_CAP: %d bytes\n", + info_element->len); + tmp_htcap_len = min(info_element->len,(u8)MAX_IE_LEN); + if(tmp_htcap_len != 0){ + network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC; + network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf)?\ + sizeof(network->bssht.bdHTCapBuf):tmp_htcap_len; + memcpy(network->bssht.bdHTCapBuf,info_element->data,network->bssht.bdHTCapLen); + + //If peer is HT, but not WMM, call QosSetLegacyWMMParamWithHT() + // windows driver will update WMM parameters each beacon received once connected + // Linux driver is a bit different. + network->bssht.bdSupportHT = true; + network->bssht.bdHT1R = ((((PHT_CAPABILITY_ELE)(network->bssht.bdHTCapBuf))->MCS[1]) == 0); + } + else{ + network->bssht.bdSupportHT = false; + network->bssht.bdHT1R = false; + } + break; + + + case MFIE_TYPE_HT_INFO: + IEEE80211_DEBUG_SCAN("MFIE_TYPE_HT_INFO: %d bytes\n", + info_element->len); + tmp_htinfo_len = min(info_element->len,(u8)MAX_IE_LEN); + if(tmp_htinfo_len){ + network->bssht.bdHTSpecVer = HT_SPEC_VER_IEEE; + network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf)?\ + sizeof(network->bssht.bdHTInfoBuf):tmp_htinfo_len; + memcpy(network->bssht.bdHTInfoBuf,info_element->data,network->bssht.bdHTInfoLen); + } + break; + + case MFIE_TYPE_AIRONET: + IEEE80211_DEBUG_SCAN("MFIE_TYPE_AIRONET: %d bytes\n", + info_element->len); + if(info_element->len >IE_CISCO_FLAG_POSITION) + { + network->bWithAironetIE = true; + + // CCX 1 spec v1.13, A01.1 CKIP Negotiation (page23): + // "A Cisco access point advertises support for CKIP in beacon and probe response packets, + // by adding an Aironet element and setting one or both of the CKIP negotiation bits." + if( (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_MIC) || + (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_PK) ) + { + network->bCkipSupported = true; + } + else + { + network->bCkipSupported = false; + } + } + else + { + network->bWithAironetIE = false; + network->bCkipSupported = false; + } + break; + case MFIE_TYPE_QOS_PARAMETER: + printk(KERN_ERR + "QoS Error need to parse QOS_PARAMETER IE\n"); + break; + +#ifdef ENABLE_DOT11D + case MFIE_TYPE_COUNTRY: + IEEE80211_DEBUG_SCAN("MFIE_TYPE_COUNTRY: %d bytes\n", + info_element->len); + //printk("=====>Receive <%s> Country IE\n",network->ssid); + ieee80211_extract_country_ie(ieee, info_element, network, network->bssid);//addr2 is same as addr3 when from an AP + break; +#endif +/* TODO */ +#if 0 + /* 802.11h */ + case MFIE_TYPE_POWER_CONSTRAINT: + network->power_constraint = info_element->data[0]; + network->flags |= NETWORK_HAS_POWER_CONSTRAINT; + break; + + case MFIE_TYPE_CSA: + network->power_constraint = info_element->data[0]; + network->flags |= NETWORK_HAS_CSA; + break; + + case MFIE_TYPE_QUIET: + network->quiet.count = info_element->data[0]; + network->quiet.period = info_element->data[1]; + network->quiet.duration = info_element->data[2]; + network->quiet.offset = info_element->data[3]; + network->flags |= NETWORK_HAS_QUIET; + break; + + case MFIE_TYPE_IBSS_DFS: + if (network->ibss_dfs) + break; + network->ibss_dfs = kmemdup(info_element->data, + info_element->len, + GFP_ATOMIC); + if (!network->ibss_dfs) + return 1; + network->flags |= NETWORK_HAS_IBSS_DFS; + break; + + case MFIE_TYPE_TPC_REPORT: + network->tpc_report.transmit_power = + info_element->data[0]; + network->tpc_report.link_margin = info_element->data[1]; + network->flags |= NETWORK_HAS_TPC_REPORT; + break; +#endif + default: + IEEE80211_DEBUG_MGMT + ("Unsupported info element: %s (%d)\n", + get_info_element_string(info_element->id), + info_element->id); + break; + } + + length -= sizeof(*info_element) + info_element->len; + info_element = + (struct ieee80211_info_element *)&info_element-> + data[info_element->len]; + } + + if(!network->atheros_cap_exist && !network->broadcom_cap_exist && + !network->cisco_cap_exist && !network->ralink_cap_exist && !network->bssht.bdRT2RTAggregation) + { + network->unknown_cap_exist = true; + } + else + { + network->unknown_cap_exist = false; + } + return 0; +} + +static inline u8 ieee80211_SignalStrengthTranslate( + u8 CurrSS + ) +{ + u8 RetSS; + + // Step 1. Scale mapping. + if(CurrSS >= 71 && CurrSS <= 100) + { + RetSS = 90 + ((CurrSS - 70) / 3); + } + else if(CurrSS >= 41 && CurrSS <= 70) + { + RetSS = 78 + ((CurrSS - 40) / 3); + } + else if(CurrSS >= 31 && CurrSS <= 40) + { + RetSS = 66 + (CurrSS - 30); + } + else if(CurrSS >= 21 && CurrSS <= 30) + { + RetSS = 54 + (CurrSS - 20); + } + else if(CurrSS >= 5 && CurrSS <= 20) + { + RetSS = 42 + (((CurrSS - 5) * 2) / 3); + } + else if(CurrSS == 4) + { + RetSS = 36; + } + else if(CurrSS == 3) + { + RetSS = 27; + } + else if(CurrSS == 2) + { + RetSS = 18; + } + else if(CurrSS == 1) + { + RetSS = 9; + } + else + { + RetSS = CurrSS; + } + //RT_TRACE(COMP_DBG, DBG_LOUD, ("##### After Mapping: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS)); + + // Step 2. Smoothing. + + //RT_TRACE(COMP_DBG, DBG_LOUD, ("$$$$$ After Smoothing: LastSS: %d, CurrSS: %d, RetSS: %d\n", LastSS, CurrSS, RetSS)); + + return RetSS; +} + +long ieee80211_translate_todbm(u8 signal_strength_index )// 0-100 index. +{ + long signal_power; // in dBm. + + // Translate to dBm (x=0.5y-95). + signal_power = (long)((signal_strength_index + 1) >> 1); + signal_power -= 95; + + return signal_power; +} + +static inline int ieee80211_network_init( + struct ieee80211_device *ieee, + struct ieee80211_probe_response *beacon, + struct ieee80211_network *network, + struct ieee80211_rx_stats *stats) +{ +#ifdef CONFIG_IEEE80211_DEBUG + //char rates_str[64]; + //char *p; +#endif + + network->qos_data.active = 0; + network->qos_data.supported = 0; + network->qos_data.param_count = 0; + network->qos_data.old_param_count = 0; + + /* Pull out fixed field data */ + memcpy(network->bssid, beacon->header.addr3, ETH_ALEN); + network->capability = le16_to_cpu(beacon->capability); + network->last_scanned = jiffies; + network->time_stamp[0] = le32_to_cpu(beacon->time_stamp[0]); + network->time_stamp[1] = le32_to_cpu(beacon->time_stamp[1]); + network->beacon_interval = le32_to_cpu(beacon->beacon_interval); + /* Where to pull this? beacon->listen_interval;*/ + network->listen_interval = 0x0A; + network->rates_len = network->rates_ex_len = 0; + network->last_associate = 0; + network->ssid_len = 0; + network->flags = 0; + network->atim_window = 0; + network->erp_value = (network->capability & WLAN_CAPABILITY_IBSS) ? + 0x3 : 0x0; + network->berp_info_valid = false; + network->broadcom_cap_exist = false; + network->ralink_cap_exist = false; + network->atheros_cap_exist = false; + network->cisco_cap_exist = false; + network->unknown_cap_exist = false; + network->realtek_cap_exit = false; + network->marvell_cap_exist = false; +#ifdef THOMAS_TURBO + network->Turbo_Enable = 0; +#endif +#ifdef ENABLE_DOT11D + network->CountryIeLen = 0; + memset(network->CountryIeBuf, 0, MAX_IE_LEN); +#endif +//Initialize HT parameters + //ieee80211_ht_initialize(&network->bssht); + HTInitializeBssDesc(&network->bssht); + if (stats->freq == IEEE80211_52GHZ_BAND) { + /* for A band (No DS info) */ + network->channel = stats->received_channel; + } else + network->flags |= NETWORK_HAS_CCK; + + network->wpa_ie_len = 0; + network->rsn_ie_len = 0; + + if (ieee80211_parse_info_param + (ieee,beacon->info_element, stats->len - sizeof(*beacon), network, stats)) + return 1; + + network->mode = 0; + if (stats->freq == IEEE80211_52GHZ_BAND) + network->mode = IEEE_A; + else { + if (network->flags & NETWORK_HAS_OFDM) + network->mode |= IEEE_G; + if (network->flags & NETWORK_HAS_CCK) + network->mode |= IEEE_B; + } + + if (network->mode == 0) { + IEEE80211_DEBUG_SCAN("Filtered out '%s (" MAC_FMT ")' " + "network.\n", + escape_essid(network->ssid, + network->ssid_len), + MAC_ARG(network->bssid)); + return 1; + } + + if(network->bssht.bdSupportHT){ + if(network->mode == IEEE_A) + network->mode = IEEE_N_5G; + else if(network->mode & (IEEE_G | IEEE_B)) + network->mode = IEEE_N_24G; + } + if (ieee80211_is_empty_essid(network->ssid, network->ssid_len)) + network->flags |= NETWORK_EMPTY_ESSID; + +#if 1 + stats->signal = 30 + (stats->SignalStrength * 70) / 100; + //stats->signal = ieee80211_SignalStrengthTranslate(stats->signal); + stats->noise = ieee80211_translate_todbm((u8)(100-stats->signal)) -25; +#endif + + memcpy(&network->stats, stats, sizeof(network->stats)); + + return 0; +} + +static inline int is_same_network(struct ieee80211_network *src, + struct ieee80211_network *dst, struct ieee80211_device* ieee) +{ + /* A network is only a duplicate if the channel, BSSID, ESSID + * and the capability field (in particular IBSS and BSS) all match. + * We treat all <hidden> with the same BSSID and channel + * as one network */ + return //((src->ssid_len == dst->ssid_len) && + (((src->ssid_len == dst->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) && + (src->channel == dst->channel) && + !memcmp(src->bssid, dst->bssid, ETH_ALEN) && + //!memcmp(src->ssid, dst->ssid, src->ssid_len) && + (!memcmp(src->ssid, dst->ssid, src->ssid_len) || (ieee->iw_mode == IW_MODE_INFRA)) && + ((src->capability & WLAN_CAPABILITY_IBSS) == + (dst->capability & WLAN_CAPABILITY_IBSS)) && + ((src->capability & WLAN_CAPABILITY_BSS) == + (dst->capability & WLAN_CAPABILITY_BSS))); +} + +static inline void update_network(struct ieee80211_network *dst, + struct ieee80211_network *src) +{ + int qos_active; + u8 old_param; + + memcpy(&dst->stats, &src->stats, sizeof(struct ieee80211_rx_stats)); + dst->capability = src->capability; + memcpy(dst->rates, src->rates, src->rates_len); + dst->rates_len = src->rates_len; + memcpy(dst->rates_ex, src->rates_ex, src->rates_ex_len); + dst->rates_ex_len = src->rates_ex_len; + if(src->ssid_len > 0) + { + memset(dst->ssid, 0, dst->ssid_len); + dst->ssid_len = src->ssid_len; + memcpy(dst->ssid, src->ssid, src->ssid_len); + } + dst->mode = src->mode; + dst->flags = src->flags; + dst->time_stamp[0] = src->time_stamp[0]; + dst->time_stamp[1] = src->time_stamp[1]; + if (src->flags & NETWORK_HAS_ERP_VALUE) + { + dst->erp_value = src->erp_value; + dst->berp_info_valid = src->berp_info_valid = true; + } + dst->beacon_interval = src->beacon_interval; + dst->listen_interval = src->listen_interval; + dst->atim_window = src->atim_window; + dst->dtim_period = src->dtim_period; + dst->dtim_data = src->dtim_data; + dst->last_dtim_sta_time[0] = src->last_dtim_sta_time[0]; + dst->last_dtim_sta_time[1] = src->last_dtim_sta_time[1]; + memcpy(&dst->tim, &src->tim, sizeof(struct ieee80211_tim_parameters)); + + dst->bssht.bdSupportHT = src->bssht.bdSupportHT; + dst->bssht.bdRT2RTAggregation = src->bssht.bdRT2RTAggregation; + dst->bssht.bdHTCapLen= src->bssht.bdHTCapLen; + memcpy(dst->bssht.bdHTCapBuf,src->bssht.bdHTCapBuf,src->bssht.bdHTCapLen); + dst->bssht.bdHTInfoLen= src->bssht.bdHTInfoLen; + memcpy(dst->bssht.bdHTInfoBuf,src->bssht.bdHTInfoBuf,src->bssht.bdHTInfoLen); + dst->bssht.bdHTSpecVer = src->bssht.bdHTSpecVer; + dst->bssht.bdRT2RTLongSlotTime = src->bssht.bdRT2RTLongSlotTime; + dst->broadcom_cap_exist = src->broadcom_cap_exist; + dst->ralink_cap_exist = src->ralink_cap_exist; + dst->atheros_cap_exist = src->atheros_cap_exist; + dst->realtek_cap_exit = src->realtek_cap_exit; + dst->marvell_cap_exist = src->marvell_cap_exist; + dst->cisco_cap_exist = src->cisco_cap_exist; + dst->unknown_cap_exist = src->unknown_cap_exist; + memcpy(dst->wpa_ie, src->wpa_ie, src->wpa_ie_len); + dst->wpa_ie_len = src->wpa_ie_len; + memcpy(dst->rsn_ie, src->rsn_ie, src->rsn_ie_len); + dst->rsn_ie_len = src->rsn_ie_len; + + dst->last_scanned = jiffies; + /* qos related parameters */ + //qos_active = src->qos_data.active; + qos_active = dst->qos_data.active; + //old_param = dst->qos_data.old_param_count; + old_param = dst->qos_data.param_count; + if(dst->flags & NETWORK_HAS_QOS_MASK){ + //not update QOS paramter in beacon, as most AP will set all these parameter to 0.//WB + // printk("====>%s(), aifs:%x, %x\n", __FUNCTION__, dst->qos_data.parameters.aifs[0], src->qos_data.parameters.aifs[0]); + // memcpy(&dst->qos_data, &src->qos_data, + // sizeof(struct ieee80211_qos_data)); + } + else { + dst->qos_data.supported = src->qos_data.supported; + dst->qos_data.param_count = src->qos_data.param_count; + } + + if(dst->qos_data.supported == 1) { + dst->QoS_Enable = 1; + if(dst->ssid_len) + IEEE80211_DEBUG_QOS + ("QoS the network %s is QoS supported\n", + dst->ssid); + else + IEEE80211_DEBUG_QOS + ("QoS the network is QoS supported\n"); + } + dst->qos_data.active = qos_active; + dst->qos_data.old_param_count = old_param; + + /* dst->last_associate is not overwritten */ +#if 1 + dst->wmm_info = src->wmm_info; //sure to exist in beacon or probe response frame. + if(src->wmm_param[0].ac_aci_acm_aifsn|| \ + src->wmm_param[1].ac_aci_acm_aifsn|| \ + src->wmm_param[2].ac_aci_acm_aifsn|| \ + src->wmm_param[1].ac_aci_acm_aifsn) { + memcpy(dst->wmm_param, src->wmm_param, WME_AC_PRAM_LEN); + } + //dst->QoS_Enable = src->QoS_Enable; +#else + dst->QoS_Enable = 1;//for Rtl8187 simulation +#endif +#ifdef THOMAS_TURBO + dst->Turbo_Enable = src->Turbo_Enable; +#endif + +#ifdef ENABLE_DOT11D + dst->CountryIeLen = src->CountryIeLen; + memcpy(dst->CountryIeBuf, src->CountryIeBuf, src->CountryIeLen); +#endif + + //added by amy for LEAP + dst->bWithAironetIE = src->bWithAironetIE; + dst->bCkipSupported = src->bCkipSupported; + memcpy(dst->CcxRmState,src->CcxRmState,2); + dst->bCcxRmEnable = src->bCcxRmEnable; + dst->MBssidMask = src->MBssidMask; + dst->bMBssidValid = src->bMBssidValid; + memcpy(dst->MBssid,src->MBssid,6); + dst->bWithCcxVerNum = src->bWithCcxVerNum; + dst->BssCcxVerNumber = src->BssCcxVerNumber; + +} + +static inline int is_beacon(__le16 fc) +{ + return (WLAN_FC_GET_STYPE(le16_to_cpu(fc)) == IEEE80211_STYPE_BEACON); +} + +static inline void ieee80211_process_probe_response( + struct ieee80211_device *ieee, + struct ieee80211_probe_response *beacon, + struct ieee80211_rx_stats *stats) +{ + struct ieee80211_network network; + struct ieee80211_network *target; + struct ieee80211_network *oldest = NULL; +#ifdef CONFIG_IEEE80211_DEBUG + struct ieee80211_info_element *info_element = &beacon->info_element[0]; +#endif + unsigned long flags; + short renew; + //u8 wmm_info; + + memset(&network, 0, sizeof(struct ieee80211_network)); + IEEE80211_DEBUG_SCAN( + "'%s' (" MAC_FMT "): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n", + escape_essid(info_element->data, info_element->len), + MAC_ARG(beacon->header.addr3), + (beacon->capability & (1<<0xf)) ? '1' : '0', + (beacon->capability & (1<<0xe)) ? '1' : '0', + (beacon->capability & (1<<0xd)) ? '1' : '0', + (beacon->capability & (1<<0xc)) ? '1' : '0', + (beacon->capability & (1<<0xb)) ? '1' : '0', + (beacon->capability & (1<<0xa)) ? '1' : '0', + (beacon->capability & (1<<0x9)) ? '1' : '0', + (beacon->capability & (1<<0x8)) ? '1' : '0', + (beacon->capability & (1<<0x7)) ? '1' : '0', + (beacon->capability & (1<<0x6)) ? '1' : '0', + (beacon->capability & (1<<0x5)) ? '1' : '0', + (beacon->capability & (1<<0x4)) ? '1' : '0', + (beacon->capability & (1<<0x3)) ? '1' : '0', + (beacon->capability & (1<<0x2)) ? '1' : '0', + (beacon->capability & (1<<0x1)) ? '1' : '0', + (beacon->capability & (1<<0x0)) ? '1' : '0'); + + if (ieee80211_network_init(ieee, beacon, &network, stats)) { + IEEE80211_DEBUG_SCAN("Dropped '%s' (" MAC_FMT ") via %s.\n", + escape_essid(info_element->data, + info_element->len), + MAC_ARG(beacon->header.addr3), + WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == + IEEE80211_STYPE_PROBE_RESP ? + "PROBE RESPONSE" : "BEACON"); + return; + } + +#ifdef ENABLE_DOT11D + // For Asus EeePc request, + // (1) if wireless adapter receive get any 802.11d country code in AP beacon, + // wireless adapter should follow the country code. + // (2) If there is no any country code in beacon, + // then wireless adapter should do active scan from ch1~11 and + // passive scan from ch12~14 + + if( !IsLegalChannel(ieee, network.channel) ) + return; + if(ieee->bGlobalDomain) + { + if (WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == IEEE80211_STYPE_PROBE_RESP) + { + // Case 1: Country code + if(IS_COUNTRY_IE_VALID(ieee) ) + { + if( !IsLegalChannel(ieee, network.channel) ) + { + printk("GetScanInfo(): For Country code, filter probe response at channel(%d).\n", network.channel); + return; + } + } + // Case 2: No any country code. + else + { + // Filter over channel ch12~14 + if(network.channel > 11) + { + printk("GetScanInfo(): For Global Domain, filter probe response at channel(%d).\n", network.channel); + return; + } + } + } + else + { + // Case 1: Country code + if(IS_COUNTRY_IE_VALID(ieee) ) + { + if( !IsLegalChannel(ieee, network.channel) ) + { + printk("GetScanInfo(): For Country code, filter beacon at channel(%d).\n",network.channel); + return; + } + } + // Case 2: No any country code. + else + { + // Filter over channel ch12~14 + if(network.channel > 14) + { + printk("GetScanInfo(): For Global Domain, filter beacon at channel(%d).\n",network.channel); + return; + } + } + } + } +#endif + + /* The network parsed correctly -- so now we scan our known networks + * to see if we can find it in our list. + * + * NOTE: This search is definitely not optimized. Once its doing + * the "right thing" we'll optimize it for efficiency if + * necessary */ + + /* Search for this entry in the list and update it if it is + * already there. */ + + spin_lock_irqsave(&ieee->lock, flags); + + if(is_same_network(&ieee->current_network, &network, ieee)) { + update_network(&ieee->current_network, &network); + if((ieee->current_network.mode == IEEE_N_24G || ieee->current_network.mode == IEEE_G) + && ieee->current_network.berp_info_valid){ + if(ieee->current_network.erp_value& ERP_UseProtection) + ieee->current_network.buseprotection = true; + else + ieee->current_network.buseprotection = false; + } + if(is_beacon(beacon->header.frame_ctl)) + { + if(ieee->state == IEEE80211_LINKED) + ieee->LinkDetectInfo.NumRecvBcnInPeriod++; + } + else //hidden AP + network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & ieee->current_network.flags); + } + + list_for_each_entry(target, &ieee->network_list, list) { + if (is_same_network(target, &network, ieee)) + break; + if ((oldest == NULL) || + (target->last_scanned < oldest->last_scanned)) + oldest = target; + } + + /* If we didn't find a match, then get a new network slot to initialize + * with this beacon's information */ + if (&target->list == &ieee->network_list) { + if (list_empty(&ieee->network_free_list)) { + /* If there are no more slots, expire the oldest */ + list_del(&oldest->list); + target = oldest; + IEEE80211_DEBUG_SCAN("Expired '%s' (" MAC_FMT ") from " + "network list.\n", + escape_essid(target->ssid, + target->ssid_len), + MAC_ARG(target->bssid)); + } else { + /* Otherwise just pull from the free list */ + target = list_entry(ieee->network_free_list.next, + struct ieee80211_network, list); + list_del(ieee->network_free_list.next); + } + + +#ifdef CONFIG_IEEE80211_DEBUG + IEEE80211_DEBUG_SCAN("Adding '%s' (" MAC_FMT ") via %s.\n", + escape_essid(network.ssid, + network.ssid_len), + MAC_ARG(network.bssid), + WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == + IEEE80211_STYPE_PROBE_RESP ? + "PROBE RESPONSE" : "BEACON"); +#endif + memcpy(target, &network, sizeof(*target)); + list_add_tail(&target->list, &ieee->network_list); + if(ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) + ieee80211_softmac_new_net(ieee,&network); + } else { + IEEE80211_DEBUG_SCAN("Updating '%s' (" MAC_FMT ") via %s.\n", + escape_essid(target->ssid, + target->ssid_len), + MAC_ARG(target->bssid), + WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == + IEEE80211_STYPE_PROBE_RESP ? + "PROBE RESPONSE" : "BEACON"); + + /* we have an entry and we are going to update it. But this entry may + * be already expired. In this case we do the same as we found a new + * net and call the new_net handler + */ + renew = !time_after(target->last_scanned + ieee->scan_age, jiffies); + //YJ,add,080819,for hidden ap + if(is_beacon(beacon->header.frame_ctl) == 0) + network.flags = (~NETWORK_EMPTY_ESSID & network.flags)|(NETWORK_EMPTY_ESSID & target->flags); + //if(strncmp(network.ssid, "linksys-c",9) == 0) + // printk("====>2 network.ssid=%s FLAG=%d target.ssid=%s FLAG=%d\n", network.ssid, network.flags, target->ssid, target->flags); + if(((network.flags & NETWORK_EMPTY_ESSID) == NETWORK_EMPTY_ESSID) \ + && (((network.ssid_len > 0) && (strncmp(target->ssid, network.ssid, network.ssid_len)))\ + ||((ieee->current_network.ssid_len == network.ssid_len)&&(strncmp(ieee->current_network.ssid, network.ssid, network.ssid_len) == 0)&&(ieee->state == IEEE80211_NOLINK)))) + renew = 1; + //YJ,add,080819,for hidden ap,end + + update_network(target, &network); + if(renew && (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE)) + ieee80211_softmac_new_net(ieee,&network); + } + + spin_unlock_irqrestore(&ieee->lock, flags); + if (is_beacon(beacon->header.frame_ctl)&&is_same_network(&ieee->current_network, &network, ieee)&&\ + (ieee->state == IEEE80211_LINKED)) { + if(ieee->handle_beacon != NULL) { + ieee->handle_beacon(ieee->dev,beacon,&ieee->current_network); + } + } +} + +void ieee80211_rx_mgt(struct ieee80211_device *ieee, + struct ieee80211_hdr_4addr *header, + struct ieee80211_rx_stats *stats) +{ + if(ieee->sta_sleep || (ieee->ps != IEEE80211_PS_DISABLED && + ieee->iw_mode == IW_MODE_INFRA && + ieee->state == IEEE80211_LINKED)) + { + tasklet_schedule(&ieee->ps_task); + } + + if(WLAN_FC_GET_STYPE(header->frame_ctl) != IEEE80211_STYPE_PROBE_RESP && + WLAN_FC_GET_STYPE(header->frame_ctl) != IEEE80211_STYPE_BEACON) + ieee->last_rx_ps_time = jiffies; + + switch (WLAN_FC_GET_STYPE(header->frame_ctl)) { + + case IEEE80211_STYPE_BEACON: + IEEE80211_DEBUG_MGMT("received BEACON (%d)\n", + WLAN_FC_GET_STYPE(header->frame_ctl)); + IEEE80211_DEBUG_SCAN("Beacon\n"); + ieee80211_process_probe_response( + ieee, (struct ieee80211_probe_response *)header, stats); + break; + + case IEEE80211_STYPE_PROBE_RESP: + IEEE80211_DEBUG_MGMT("received PROBE RESPONSE (%d)\n", + WLAN_FC_GET_STYPE(header->frame_ctl)); + IEEE80211_DEBUG_SCAN("Probe response\n"); + ieee80211_process_probe_response( + ieee, (struct ieee80211_probe_response *)header, stats); + break; + + } +} + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) +EXPORT_SYMBOL(ieee80211_rx_mgt); +EXPORT_SYMBOL(ieee80211_rx); +#else +EXPORT_SYMBOL_NOVERS(ieee80211_rx_mgt); +EXPORT_SYMBOL_NOVERS(ieee80211_rx); +#endif |