diff options
Diffstat (limited to 'drivers/staging/rtl8192u/ieee80211/ieee80211_rx.c')
-rw-r--r-- | drivers/staging/rtl8192u/ieee80211/ieee80211_rx.c | 2430 |
1 files changed, 0 insertions, 2430 deletions
diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211_rx.c b/drivers/staging/rtl8192u/ieee80211/ieee80211_rx.c deleted file mode 100644 index 5da8ac401d..0000000000 --- a/drivers/staging/rtl8192u/ieee80211/ieee80211_rx.c +++ /dev/null @@ -1,2430 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * 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 - ****************************************************************************** - - Few modifications for Realtek's Wi-Fi drivers by - Andrea Merello <andrea.merello@gmail.com> - - A special thanks goes to Realtek for their support ! - -******************************************************************************/ - - -#include <linux/compiler.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 <linux/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 rtl_80211_hdr_4addr *hdr = (struct rtl_80211_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 = 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 && - 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 && 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 rtl_80211_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 rtl_80211_hdr_3addrqos *hdr_3addrqos; - struct rtl_80211_hdr_4addrqos *hdr_4addrqos; - u8 tid; - - if (((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS) && IEEE80211_QOS_HAS_SEQ(fc)) { - hdr_4addrqos = (struct rtl_80211_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 rtl_80211_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 rtl_80211_hdr_4addr) + - 8 /* LLC */ + - 2 /* alignment */ + - 8 /* WEP */ + - ETH_ALEN /* WDS */ + - (IEEE80211_QOS_HAS_SEQ(fc) ? 2 : 0) /* QOS Control */); - if (!skb) - 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) - 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) { - 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 rtl_80211_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 rtl_80211_hdr_3addrqos *hdr_3addrqos; - struct rtl_80211_hdr_4addrqos *hdr_4addrqos; - u8 tid; - - if (((fc & IEEE80211_FCTL_DSTODS) == IEEE80211_FCTL_DSTODS) && IEEE80211_QOS_HAS_SEQ(fc)) { - hdr_4addrqos = (struct rtl_80211_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 rtl_80211_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) { - 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 rtl_80211_hdr_3addr *hdr = (struct rtl_80211_hdr_3addr *)skb->data; - - rx_stats->len = skb->len; - ieee80211_rx_mgt(ieee, (struct rtl_80211_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) { - netdev_dbg(ieee->dev, "Master mode not yet supported.\n"); - 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) { - netdev_dbg(skb->dev, "unknown management frame " - "(type=0x%02x, stype=0x%02x) dropped\n", - type, stype); - return -1; - } - - hostap_rx(skb->dev, skb, rx_stats); - return 0; - } - - netdev_dbg(skb->dev, "hostap_rx_frame_mgmt: management frame " - "received in non-Host AP mode\n"); - 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 rtl_80211_hdr_4addr *hdr; - u8 *pos; - - if (skb->len < 24) - return 0; - - hdr = (struct rtl_80211_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 rtl_80211_hdr_4addr *hdr; - int res, hdrlen; - - if (!crypt || !crypt->ops->decrypt_mpdu) - return 0; - if (ieee->hwsec_active) { - struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + MAX_DEV_ADDR_SIZE); - tcb_desc->bHwSec = 1; - } - hdr = (struct rtl_80211_hdr_4addr *)skb->data; - hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl)); - - if (ieee->tkip_countermeasures && - strcmp(crypt->ops->name, "TKIP") == 0) { - if (net_ratelimit()) { - netdev_dbg(ieee->dev, "TKIP countermeasures: dropped " - "received packet from %pM\n", - hdr->addr2); - } - return -1; - } - - 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 rtl_80211_hdr_4addr *hdr; - int res, hdrlen; - - if (!crypt || !crypt->ops->decrypt_msdu) - return 0; - if (ieee->hwsec_active) { - struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + MAX_DEV_ADDR_SIZE); - tcb_desc->bHwSec = 1; - } - - hdr = (struct rtl_80211_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) { - netdev_dbg(ieee->dev, "MSDU decryption/MIC verification failed" - " (SA=%pM keyidx=%d)\n", - 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 rtl_80211_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 rtl_80211_hdr_3addrqos *hdr_3addrqos; - struct rtl_80211_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 rtl_80211_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 rtl_80211_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; - - 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) - 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) - goto drop; - if (*last_frag + 1 != frag) - /* out-of-order fragment */ - goto drop; - } else - *last_seq = seq; - - *last_frag = frag; - *last_time = jiffies; - return 0; - -drop: -// BUG_ON(!(fc & IEEE80211_FCTL_RETRY)); - - return 1; -} - -static bool AddReorderEntry(struct rx_ts_record *pTS, struct rx_reorder_entry *pReorderEntry) -{ - struct list_head *pList = &pTS->rx_pending_pkt_list; - while (pList->next != &pTS->rx_pending_pkt_list) { - if (SN_LESS(pReorderEntry->SeqNum, list_entry(pList->next, struct rx_reorder_entry, List)->SeqNum)) - pList = pList->next; - else if (SN_EQUAL(pReorderEntry->SeqNum, list_entry(pList->next, struct rx_reorder_entry, List)->SeqNum)) - return false; - else - break; - } - pReorderEntry->List.next = pList->next; - pReorderEntry->List.next->prev = &pReorderEntry->List; - pReorderEntry->List.prev = pList; - pList->next = &pReorderEntry->List; - - return true; -} - -static void indicate_packets(struct ieee80211_device *ieee, - struct ieee80211_rxb *rxb) -{ - struct net_device_stats *stats = &ieee->stats; - struct net_device *dev = ieee->dev; - u16 ethertype; - u8 i; - - for (i = 0; i < rxb->nr_subframes; i++) { - struct sk_buff *sub_skb = rxb->subframes[i]; - - if (!sub_skb) - continue; - - /* 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) && - ethertype != ETH_P_AARP && - ethertype != ETH_P_IPX) || - !memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE))) { - /* remove RFC1042 or Bridge-Tunnel encapsulation and - * replace EtherType */ - skb_pull(sub_skb, SNAP_SIZE); - } else { - /* Leave Ethernet header part of hdr and full payload */ - put_unaligned_be16(sub_skb->len, skb_push(sub_skb, 2)); - } - memcpy(skb_push(sub_skb, ETH_ALEN), rxb->src, ETH_ALEN); - memcpy(skb_push(sub_skb, ETH_ALEN), rxb->dst, ETH_ALEN); - - stats->rx_packets++; - stats->rx_bytes += sub_skb->len; - if (is_multicast_ether_addr(rxb->dst)) - stats->multicast++; - - /* Indicate the packets to upper layer */ - sub_skb->protocol = eth_type_trans(sub_skb, dev); - memset(sub_skb->cb, 0, sizeof(sub_skb->cb)); - sub_skb->dev = dev; - /* 802.11 crc not sufficient */ - sub_skb->ip_summed = CHECKSUM_NONE; - ieee->last_rx_ps_time = jiffies; - netif_rx(sub_skb); - } -} - -void ieee80211_indicate_packets(struct ieee80211_device *ieee, - struct ieee80211_rxb **prxbIndicateArray, - u8 index) -{ - u8 i; - - for (i = 0; i < index; i++) { - struct ieee80211_rxb *prxb = prxbIndicateArray[i]; - - indicate_packets(ieee, prxb); - kfree(prxb); - prxb = NULL; - } -} - -static void RxReorderIndicatePacket(struct ieee80211_device *ieee, - struct ieee80211_rxb *prxb, - struct rx_ts_record *pTS, u16 SeqNum) -{ - PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo; - struct rx_reorder_entry *pReorderEntry = NULL; - struct ieee80211_rxb **prxbIndicateArray; - u8 WinSize = pHTInfo->RxReorderWinSize; - u16 WinEnd = (pTS->rx_indicate_seq + WinSize - 1) % 4096; - u8 index = 0; - bool bMatchWinStart = false, bPktInBuf = false; - IEEE80211_DEBUG(IEEE80211_DL_REORDER, "%s(): Seq is %d,pTS->rx_indicate_seq is %d, WinSize is %d\n", __func__, SeqNum, pTS->rx_indicate_seq, WinSize); - - prxbIndicateArray = kmalloc_array(REORDER_WIN_SIZE, - sizeof(struct ieee80211_rxb *), - GFP_ATOMIC); - if (!prxbIndicateArray) - return; - - /* Rx Reorder initialize condition.*/ - if (pTS->rx_indicate_seq == 0xffff) - pTS->rx_indicate_seq = SeqNum; - - /* Drop out the packet which SeqNum is smaller than WinStart */ - if (SN_LESS(SeqNum, pTS->rx_indicate_seq)) { - IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Packet Drop! IndicateSeq: %d, NewSeq: %d\n", - pTS->rx_indicate_seq, SeqNum); - pHTInfo->RxReorderDropCounter++; - { - int i; - for (i = 0; i < prxb->nr_subframes; i++) - dev_kfree_skb(prxb->subframes[i]); - - kfree(prxb); - prxb = NULL; - } - - kfree(prxbIndicateArray); - 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->rx_indicate_seq)) { - pTS->rx_indicate_seq = (pTS->rx_indicate_seq + 1) % 4096; - bMatchWinStart = true; - } else if (SN_LESS(WinEnd, SeqNum)) { - if (SeqNum >= (WinSize - 1)) - pTS->rx_indicate_seq = SeqNum + 1 - WinSize; - else - pTS->rx_indicate_seq = 4095 - (WinSize - (SeqNum + 1)) + 1; - - IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Window Shift! IndicateSeq: %d, NewSeq: %d\n", pTS->rx_indicate_seq, 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->rx_indicate_seq, SeqNum); - prxbIndicateArray[0] = prxb; -// printk("========================>%s(): SeqNum is %d\n",__func__,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 ordered list\n",__func__); - if (!list_empty(&ieee->RxReorder_Unused_List)) { - pReorderEntry = list_entry(ieee->RxReorder_Unused_List.next, struct 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",__func__,pReorderEntry->SeqNum); - - if (!AddReorderEntry(pTS, pReorderEntry)) { - IEEE80211_DEBUG(IEEE80211_DL_REORDER, "%s(): Duplicate packet is dropped!! IndicateSeq: %d, NewSeq: %d\n", - __func__, pTS->rx_indicate_seq, 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->rx_indicate_seq, SeqNum); - } - } 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->rx_pending_pkt_list)) { - IEEE80211_DEBUG(IEEE80211_DL_REORDER, "%s(): start RREORDER indicate\n", __func__); - pReorderEntry = list_entry(pTS->rx_pending_pkt_list.prev, struct rx_reorder_entry, List); - if (SN_LESS(pReorderEntry->SeqNum, pTS->rx_indicate_seq) || - SN_EQUAL(pReorderEntry->SeqNum, pTS->rx_indicate_seq)) { - /* 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->rx_indicate_seq)) - pTS->rx_indicate_seq = (pTS->rx_indicate_seq + 1) % 4096; - - IEEE80211_DEBUG(IEEE80211_DL_REORDER, "Packets indication!! IndicateSeq: %d, NewSeq: %d\n", pTS->rx_indicate_seq, SeqNum); - prxbIndicateArray[index] = pReorderEntry->prxb; - // printk("========================>%s(): pReorderEntry->SeqNum is %d\n",__func__,pReorderEntry->SeqNum); - index++; - - list_add_tail(&pReorderEntry->List, &ieee->RxReorder_Unused_List); - } else { - bPktInBuf = true; - break; - } - } - - /* Handling pending timer. Set this timer to prevent from long time Rx buffering.*/ - if (index > 0) { - // Cancel previous pending timer. - // del_timer_sync(&pTS->rx_pkt_pending_timer); - pTS->rx_timeout_indicate_seq = 0xffff; - - // Indicate packets - if (index > REORDER_WIN_SIZE) { - IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Rx Reorder buffer full!! \n"); - kfree(prxbIndicateArray); - return; - } - ieee80211_indicate_packets(ieee, prxbIndicateArray, index); - } - - if (bPktInBuf && pTS->rx_timeout_indicate_seq == 0xffff) { - // Set new pending timer. - IEEE80211_DEBUG(IEEE80211_DL_REORDER, "%s(): SET rx timeout timer\n", __func__); - pTS->rx_timeout_indicate_seq = pTS->rx_indicate_seq; - if (timer_pending(&pTS->rx_pkt_pending_timer)) - del_timer_sync(&pTS->rx_pkt_pending_timer); - pTS->rx_pkt_pending_timer.expires = jiffies + - msecs_to_jiffies(pHTInfo->RxReorderPendingTime); - add_timer(&pTS->rx_pkt_pending_timer); - } - - kfree(prxbIndicateArray); -} - -static u8 parse_subframe(struct ieee80211_device *ieee, - struct sk_buff *skb, - struct ieee80211_rx_stats *rx_stats, - struct ieee80211_rxb *rxb, u8 *src, u8 *dst) -{ - struct rtl_80211_hdr_3addr *hdr = (struct rtl_80211_hdr_3addr *)skb->data; - u16 fc = le16_to_cpu(hdr->frame_ctl); - - u16 LLCOffset = sizeof(struct rtl_80211_hdr_3addr); - u16 ChkLength; - bool bIsAggregateFrame = false; - u16 nSubframe_Length; - u8 nPadding_Length = 0; - u16 SeqNum = 0; - - struct sk_buff *sub_skb; - /* 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 += HTCLNG; - - // 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)) { - netdev_dbg(ieee->dev, "A-MSDU parse error!! pRfd->nTotalSubframe : %d\n", - rxb->nr_subframes); - netdev_dbg(ieee->dev, "A-MSDU parse error!! Subframe Length: %d\n", nSubframe_Length); - netdev_dbg(ieee->dev, "nRemain_Length is %d and nSubframe_Length is : %d\n", skb->len, nSubframe_Length); - netdev_dbg(ieee->dev, "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); - if (!sub_skb) - return 0; - skb_reserve(sub_skb, 12); - skb_put_data(sub_skb, 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 rtl_80211_hdr_4addr *hdr; - //struct rtl_80211_hdr_3addrqos *hdr; - - size_t hdrlen; - u16 fc, type, stype, sc; - struct net_device_stats *stats; - unsigned int frag; - //added by amy for reorder - u8 TID = 0; - u16 SeqNum = 0; - struct rx_ts_record *pTS = NULL; - //bool bIsAggregateFrame = false; - //added by amy for reorder -#ifdef NOT_YET - struct net_device *wds = NULL; - struct net_device *wds = NULL; - 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 hdr type - hdr = (struct rtl_80211_hdr_4addr *)skb->data; - stats = &ieee->stats; - - if (skb->len < 10) { - netdev_info(dev, "SKB length < 10\n"); - 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()) - netdev_warn(dev, "find HTCControl\n"); - hdrlen += 4; - rx_stats->bContainHTC = true; - } - - //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len); -#ifdef NOT_YET - /* 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 */ - hostap_update_rx_stats(local->ap, hdr, rx_stats); -#endif - - if (ieee->iw_mode == IW_MODE_MONITOR) { - unsigned int len = skb->len; - - ieee80211_monitor_rx(ieee, skb, rx_stats); - stats->rx_packets++; - stats->rx_bytes += 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]; -#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 || !crypt->ops->decrypt_mpdu)) - 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) || !ieee->current_network.qos_data.active || !IsDataFrame(skb->data) || IsLegacyDataFrame(skb->data)) { - if (is_duplicate_packet(ieee, hdr)) - goto rx_dropped; - - } else { - struct rx_ts_record *pRxTS = NULL; - //IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): QOS ENABLE AND RECEIVE QOS DATA , we will get Ts, tid:%d\n",__func__, tid); - if (GetTs( - ieee, - (struct ts_common_info **)&pRxTS, - hdr->addr2, - Frame_QoSTID((u8 *)(skb->data)), - RX_DIR, - true)) { - - // IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): pRxTS->rx_last_frag_num is %d,frag is %d,pRxTS->rx_last_seq_num is %d,seq is %d\n",__func__,pRxTS->rx_last_frag_num,frag,pRxTS->rx_last_seq_num,WLAN_GET_SEQ_SEQ(sc)); - if ((fc & (1 << 11)) && - (frag == pRxTS->rx_last_frag_num) && - (WLAN_GET_SEQ_SEQ(sc) == pRxTS->rx_last_seq_num)) { - goto rx_dropped; - } else { - pRxTS->rx_last_frag_num = frag; - pRxTS->rx_last_seq_num = WLAN_GET_SEQ_SEQ(sc); - } - } else { - IEEE80211_DEBUG(IEEE80211_DL_ERR, "%s(): No TS!! Skip the check!!\n", __func__); - goto rx_dropped; - } - } - 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; - default: - 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; - } - - 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)) { - case AP_RX_CONTINUE_NOT_AUTHORIZED: - case AP_RX_CONTINUE: - 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); - if (keyidx < 0) { - netdev_dbg(ieee->dev, "decrypt frame error\n"); - goto rx_dropped; - } - } - - - hdr = (struct rtl_80211_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) { - netdev_warn(dev, "host decrypted and " - "reassembled frame did not fit skb\n"); - 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 */ - skb_put_data(frag_skb, skb->data, flen); - } else { - /* append frame payload to the end of the fragment - * cache skb */ - skb_put_data(frag_skb, 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 rtl_80211_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)) { - netdev_dbg(ieee->dev, "==>decrypt msdu error\n"); - goto rx_dropped; - } - - //added by amy for AP roaming - ieee->LinkDetectInfo.NumRecvDataInPeriod++; - ieee->LinkDetectInfo.NumRxOkInPeriod++; - - hdr = (struct rtl_80211_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 (ieee->current_network.qos_data.active && IsQoSDataFrame(skb->data) - && !is_multicast_ether_addr(hdr->addr1)) { - TID = Frame_QoSTID(skb->data); - SeqNum = WLAN_GET_SEQ_SEQ(sc); - GetTs(ieee, (struct ts_common_info **)&pTS, hdr->addr2, TID, RX_DIR, true); - if (TID != 0 && TID != 3) - ieee->bis_any_nonbepkts = true; - } -//added by amy for reorder - /* skb: hdr + (possible reassembled) full plaintext payload */ - //ethertype = (payload[6] << 8) | payload[7]; - rxb = kmalloc(sizeof(struct ieee80211_rxb), GFP_ATOMIC); - if (!rxb) - goto rx_dropped; - /* to parse amsdu packets */ - /* qos data packets & reserved bit is 1 */ - if (parse_subframe(ieee, 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; - } - -//added by amy for reorder - if (!ieee->pHTInfo->bCurRxReorderEnable || !pTS) { - indicate_packets(ieee, rxb); - kfree(rxb); - rxb = NULL; - - } else { - IEEE80211_DEBUG(IEEE80211_DL_REORDER, "%s(): REORDER ENABLE AND PTS not NULL, and we will enter RxReorderIndicatePacket()\n", __func__); - 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: - 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; -} -EXPORT_SYMBOL(ieee80211_rx); - -#define MGMT_FRAME_FIXED_PART_LENGTH 0x24 - -static u8 qos_oui[QOS_OUI_LEN] = { 0x00, 0x50, 0xF2 }; - -/* -* Make the structure we read from the beacon packet to have -* the right values -*/ -static int ieee80211_verify_qos_info(struct ieee80211_qos_information_element - *info_element, int sub_type) -{ - if (info_element->elementID != QOS_ELEMENT_ID) - return -1; - 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) -{ - size_t size = sizeof(*element_param); - - if (!element_param || !info_element || info_element->len != size - 2) - return -1; - - memcpy(element_param, info_element, size); - return ieee80211_verify_qos_info(&element_param->info_element, - QOS_OUI_PARAM_SUB_TYPE); -} - -/* - * 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) -{ - size_t size = sizeof(*element_info); - - if (!element_info || !info_element || info_element->len != size - 2) - return -1; - - memcpy(element_info, info_element, size); - return ieee80211_verify_qos_info(element_info, QOS_OUI_INFO_SUB_TYPE); -} - - -/* - * 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 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] = - cpu_to_le16(ac_params->ecw_min_max & 0x0F); - - qos_param->cw_max[aci] = - cpu_to_le16((ac_params->ecw_min_max & 0xF0) >> 4); - - qos_param->flag[aci] = - (ac_params->aci_aifsn & 0x10) ? 0x01 : 0x00; - qos_param->tx_op_limit[aci] = ac_params->tx_op_limit; - } - return 0; -} - -/* - * 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_update_country_ie(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 += scnprintf(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 += scnprintf(p, sizeof(rates_str) - - (p - rates_str), "%02X ", - network->rates_ex[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; - - network->last_dtim_sta_time[0] = stats->mac_time[0]; - 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; - - 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; - else - network->bssht.bdSupportHT = 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->bssht.bdRT2RTAggregation = true; - - if ((ht_realtek_agg_buf[4] == 1) && (ht_realtek_agg_buf[5] & 0x02)) - network->bssht.bdRT2RTLongSlotTime = true; - } - } - - } - - //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)) { - netdev_dbg(ieee->dev, "========> Atheros AP exists\n"); - 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] == 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); - ether_addr_copy(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; - } else - network->bssht.bdSupportHT = 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: - netdev_err(ieee->dev, - "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); - ieee80211_extract_country_ie(ieee, info_element, network, network->bssid);//addr2 is same as addr3 when from an AP - break; -/* TODO */ - 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; -} - -/* 0-100 index */ -static long ieee80211_translate_todbm(u8 signal_strength_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 = le16_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; -#ifdef THOMAS_TURBO - network->Turbo_Enable = 0; -#endif - 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; - - stats->signal = 30 + (stats->SignalStrength * 70) / 100; - stats->noise = ieee80211_translate_todbm((u8)(100 - stats->signal)) - 25; - - 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->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) - 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 */ - dst->wmm_info = src->wmm_info; //sure to exist in beacon or probe response frame. - if (src->wmm_param[0].aci_aifsn || \ - src->wmm_param[1].aci_aifsn || \ - src->wmm_param[2].aci_aifsn || \ - src->wmm_param[3].aci_aifsn) { - memcpy(dst->wmm_param, src->wmm_param, WME_AC_PRAM_LEN); - } - //dst->QoS_Enable = src->QoS_Enable; -#ifdef THOMAS_TURBO - dst->Turbo_Enable = src->Turbo_Enable; -#endif - - 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 - int fc = WLAN_FC_GET_STYPE(le16_to_cpu(beacon->header.frame_ctl)); - unsigned long flags; - short renew; - u16 capability; - //u8 wmm_info; - - network = kzalloc(sizeof(*network), GFP_ATOMIC); - if (!network) - goto out; - - capability = le16_to_cpu(beacon->capability); - 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, - (capability & BIT(0xf)) ? '1' : '0', - (capability & BIT(0xe)) ? '1' : '0', - (capability & BIT(0xd)) ? '1' : '0', - (capability & BIT(0xc)) ? '1' : '0', - (capability & BIT(0xb)) ? '1' : '0', - (capability & BIT(0xa)) ? '1' : '0', - (capability & BIT(0x9)) ? '1' : '0', - (capability & BIT(0x8)) ? '1' : '0', - (capability & BIT(0x7)) ? '1' : '0', - (capability & BIT(0x6)) ? '1' : '0', - (capability & BIT(0x5)) ? '1' : '0', - (capability & BIT(0x4)) ? '1' : '0', - (capability & BIT(0x3)) ? '1' : '0', - (capability & BIT(0x2)) ? '1' : '0', - (capability & BIT(0x1)) ? '1' : '0', - (capability & BIT(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, - fc == IEEE80211_STYPE_PROBE_RESP ? - "PROBE RESPONSE" : "BEACON"); - goto out; - } - - // 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 (!is_legal_channel(ieee, network->channel)) - goto out; - if (ieee->bGlobalDomain) { - if (fc == IEEE80211_STYPE_PROBE_RESP) { - if (IS_COUNTRY_IE_VALID(ieee)) { - // Case 1: Country code - if (!is_legal_channel(ieee, network->channel)) { - netdev_warn(ieee->dev, "GetScanInfo(): For Country code, filter probe response at channel(%d).\n", network->channel); - goto out; - } - } else { - // Case 2: No any country code. - // Filter over channel ch12~14 - if (network->channel > 11) { - netdev_warn(ieee->dev, "GetScanInfo(): For Global Domain, filter probe response at channel(%d).\n", network->channel); - goto out; - } - } - } else { - if (IS_COUNTRY_IE_VALID(ieee)) { - // Case 1: Country code - if (!is_legal_channel(ieee, network->channel)) { - netdev_warn(ieee->dev, "GetScanInfo(): For Country code, filter beacon at channel(%d).\n", network->channel); - goto out; - } - } else { - // Case 2: No any country code. - // Filter over channel ch12~14 - if (network->channel > 14) { - netdev_warn(ieee->dev, "GetScanInfo(): For Global Domain, filter beacon at channel(%d).\n", network->channel); - goto out; - } - } - } - } - - /* 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 || - (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, - fc == 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, - fc == 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) - ieee->handle_beacon(ieee->dev, beacon, &ieee->current_network); - } - -out: - kfree(network); -} - -void ieee80211_rx_mgt(struct ieee80211_device *ieee, - struct rtl_80211_hdr_4addr *header, - struct ieee80211_rx_stats *stats) -{ - switch (WLAN_FC_GET_STYPE(le16_to_cpu(header->frame_ctl))) { - - case IEEE80211_STYPE_BEACON: - IEEE80211_DEBUG_MGMT("received BEACON (%d)\n", - WLAN_FC_GET_STYPE(le16_to_cpu(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(le16_to_cpu(header->frame_ctl))); - IEEE80211_DEBUG_SCAN("Probe response\n"); - ieee80211_process_probe_response( - ieee, (struct ieee80211_probe_response *)header, stats); - break; - - } -} -EXPORT_SYMBOL(ieee80211_rx_mgt); |