diff options
Diffstat (limited to 'drivers/staging/rtl8192su/ieee80211/ieee80211_rx.c')
| -rw-r--r-- | drivers/staging/rtl8192su/ieee80211/ieee80211_rx.c | 2580 |
1 files changed, 0 insertions, 2580 deletions
diff --git a/drivers/staging/rtl8192su/ieee80211/ieee80211_rx.c b/drivers/staging/rtl8192su/ieee80211/ieee80211_rx.c deleted file mode 100644 index 09a02f7..0000000 --- a/drivers/staging/rtl8192su/ieee80211/ieee80211_rx.c +++ /dev/null @@ -1,2580 +0,0 @@ -/* - * 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/wireless.h> -#include <linux/etherdevice.h> -#include <asm/uaccess.h> -#include <linux/ctype.h> - -#include "ieee80211.h" -#include "dot11d.h" -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; - skb_reset_mac_header(skb); - - 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_rtl_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; - -} - - - -/* 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_rtl_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 %pM\n", - ieee->dev->name, 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=%pM" - ") res=%d\n", 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,ieee); - atomic_dec(&crypt->refcnt); - if (res < 0) { - printk(KERN_DEBUG "%s: MSDU decryption/MIC verification failed" - " (SA=%pM keyidx=%d)\n", - ieee->dev->name, 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); - /* 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; - mod_timer(&pTS->RxPktPendingTimer, jiffies + MSECS(pHTInfo->RxReorderPendingTime)); - } -#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_control); - - 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_ctrl)); - - 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)) { - 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_rtl_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 -// 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); - - if (ieee->iw_mode == IW_MODE_MONITOR) { - ieee80211_monitor_rx(ieee, skb, rx_stats); - stats->rx_packets++; - stats->rx_bytes += skb->len; - return 1; - } - - if (ieee->host_decrypt) { - int idx = 0; - if (skb->len >= hdrlen + 3) - idx = skb->data[hdrlen + 3] >> 6; - crypt = ieee->crypt[idx]; - - /* 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=%pM)\n", - 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; - //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) { - - //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; - } - - - dev->last_rx = jiffies; - - //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=%pM)\n", - 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 %pM" - " (drop_unencrypted=1)\n", - 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 = 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: - 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 - -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); - } - } - -} - -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; - //we use jiffies for legacy Power save - network->last_dtim_sta_time[0] = jiffies; - 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; - } - - 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; - } - - //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(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; - - 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; - 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; - network->Turbo_Enable = 0; - network->CountryIeLen = 0; - memset(network->CountryIeBuf, 0, MAX_IE_LEN); -//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 (%pM)' " - "network.\n", - escape_essid(network->ssid, - network->ssid_len), - 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 - dst->Turbo_Enable = src->Turbo_Enable; - - dst->CountryIeLen = src->CountryIeLen; - memcpy(dst->CountryIeBuf, src->CountryIeBuf, src->CountryIeLen); - - //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' (%pM): %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), - 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' (%pM) via %s.\n", - escape_essid(info_element->data, - info_element->len), - beacon->header.addr3, - WLAN_FC_GET_STYPE(beacon->header.frame_control) == - IEEE80211_STYPE_PROBE_RESP ? - "PROBE RESPONSE" : "BEACON"); - return; - } - - // 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_control) == 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; - } - } - } - } - - /* 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_control)) - { - 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' (%pM) from " - "network list.\n", - escape_essid(target->ssid, - target->ssid_len), - 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' (%pM) via %s.\n", - escape_essid(network.ssid, - network.ssid_len), - network.bssid, - WLAN_FC_GET_STYPE(beacon->header.frame_control) == - 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' (%pM) via %s.\n", - escape_essid(target->ssid, - target->ssid_len), - target->bssid, - WLAN_FC_GET_STYPE(beacon->header.frame_control) == - 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_control) == 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_control)&&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; - - } -} |
