4096 lines
116 KiB
C
4096 lines
116 KiB
C
/*
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* Original code based Host AP (software wireless LAN access point) driver
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* for Intersil Prism2/2.5/3 - hostap.o module, common routines
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*
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* Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
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* <jkmaline@cc.hut.fi>
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* Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
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* Copyright (c) 2004, Intel Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation. See README and COPYING for
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* more details.
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******************************************************************************
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Few modifications for Realtek's Wi-Fi drivers by
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Andrea Merello <andreamrl@tiscali.it>
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A special thanks goes to Realtek for their support !
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******************************************************************************/
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#include <linux/compiler.h>
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#include <linux/errno.h>
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#include <linux/if_arp.h>
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#include <linux/in6.h>
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#include <linux/in.h>
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#include <linux/ip.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/netdevice.h>
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#include <linux/pci.h>
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#include <linux/proc_fs.h>
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#include <linux/skbuff.h>
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#include <linux/slab.h>
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#include <linux/tcp.h>
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#include <linux/types.h>
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#include <linux/version.h>
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#include <linux/wireless.h>
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#include <linux/etherdevice.h>
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#include <asm/uaccess.h>
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#include <linux/ctype.h>
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#include "rtllib.h"
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#ifdef ENABLE_DOT11D
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#include "dot11d.h"
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#endif
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#if defined CONFIG_CFG_80211
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#include <linux/crc32.h>
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struct ieee80211_channel *rtllib_get_channel(struct wiphy *wiphy,
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int freq)
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{
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enum ieee80211_band band;
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struct ieee80211_supported_band *sband;
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int i;
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for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
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sband = wiphy->bands[band];
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if (!sband)
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continue;
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for (i = 0; i < sband->n_channels; i++) {
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if (sband->channels[i].center_freq == freq)
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return &sband->channels[i];
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}
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}
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return NULL;
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}
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int rtllib_channel_to_frequency(int chan)
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{
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if (chan < 14)
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return 2407 + chan * 5;
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if (chan == 14)
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return 2484;
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/* FIXME: 802.11j 17.3.8.3.2 */
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return (chan + 1000) * 5;
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}
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u32 rtllib_parse_elems_crc(u8 *start, size_t len,
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struct ieee802_11_elems *elems,
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u64 filter, u32 crc)
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{
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size_t left = len;
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u8 *pos = start;
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bool calc_crc = filter != 0;
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memset(elems, 0, sizeof(*elems));
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elems->ie_start = start;
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elems->total_len = len;
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while (left >= 2) {
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u8 id, elen;
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id = *pos++;
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elen = *pos++;
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left -= 2;
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if (elen > left)
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break;
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if (calc_crc && id < 64 && (filter & BIT(id)))
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crc = crc32_be(crc, pos - 2, elen + 2);
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switch (id) {
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case WLAN_EID_SSID:
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elems->ssid = pos;
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elems->ssid_len = elen;
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break;
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case WLAN_EID_SUPP_RATES:
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elems->supp_rates = pos;
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elems->supp_rates_len = elen;
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break;
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case WLAN_EID_FH_PARAMS:
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elems->fh_params = pos;
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elems->fh_params_len = elen;
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break;
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case WLAN_EID_DS_PARAMS:
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elems->ds_params = pos;
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elems->ds_params_len = elen;
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break;
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case WLAN_EID_CF_PARAMS:
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elems->cf_params = pos;
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elems->cf_params_len = elen;
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break;
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case WLAN_EID_TIM:
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if (elen >= sizeof(struct ieee80211_tim_ie)) {
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elems->tim = (void *)pos;
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elems->tim_len = elen;
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}
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break;
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case WLAN_EID_IBSS_PARAMS:
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elems->ibss_params = pos;
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elems->ibss_params_len = elen;
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break;
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case WLAN_EID_CHALLENGE:
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elems->challenge = pos;
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elems->challenge_len = elen;
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break;
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case WLAN_EID_VENDOR_SPECIFIC:
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if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
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pos[2] == 0xf2) {
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/* Microsoft OUI (00:50:F2) */
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if (calc_crc)
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crc = crc32_be(crc, pos - 2, elen + 2);
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if (pos[3] == 1) {
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/* OUI Type 1 - WPA IE */
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elems->wpa = pos;
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elems->wpa_len = elen;
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} else if (elen >= 5 && pos[3] == 2) {
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/* OUI Type 2 - WMM IE */
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if (pos[4] == 0) {
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elems->wmm_info = pos;
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elems->wmm_info_len = elen;
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} else if (pos[4] == 1) {
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elems->wmm_param = pos;
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elems->wmm_param_len = elen;
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}
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}
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}
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break;
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case WLAN_EID_RSN:
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elems->rsn = pos;
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elems->rsn_len = elen;
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break;
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case WLAN_EID_ERP_INFO:
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elems->erp_info = pos;
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elems->erp_info_len = elen;
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break;
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case WLAN_EID_EXT_SUPP_RATES:
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elems->ext_supp_rates = pos;
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elems->ext_supp_rates_len = elen;
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break;
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case WLAN_EID_HT_CAPABILITY:
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if (elen >= sizeof(struct ieee80211_ht_cap))
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elems->ht_cap_elem = (void *)pos;
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break;
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case WLAN_EID_HT_INFORMATION:
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if (elen >= sizeof(struct ieee80211_ht_info))
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elems->ht_info_elem = (void *)pos;
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break;
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case WLAN_EID_MESH_ID:
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elems->mesh_id = pos;
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elems->mesh_id_len = elen;
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break;
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case WLAN_EID_MESH_CONFIG:
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elems->mesh_config = pos;
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elems->mesh_config_len = elen;
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break;
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case WLAN_EID_PEER_LINK:
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elems->peer_link = pos;
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elems->peer_link_len = elen;
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break;
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case WLAN_EID_PREQ:
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elems->preq = pos;
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elems->preq_len = elen;
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break;
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case WLAN_EID_PREP:
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elems->prep = pos;
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elems->prep_len = elen;
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break;
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case WLAN_EID_PERR:
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elems->perr = pos;
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elems->perr_len = elen;
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break;
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case WLAN_EID_CHANNEL_SWITCH:
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elems->ch_switch_elem = pos;
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elems->ch_switch_elem_len = elen;
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break;
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case WLAN_EID_QUIET:
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if (!elems->quiet_elem) {
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elems->quiet_elem = pos;
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elems->quiet_elem_len = elen;
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}
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elems->num_of_quiet_elem++;
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break;
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case WLAN_EID_COUNTRY:
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elems->country_elem = pos;
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elems->country_elem_len = elen;
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break;
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case WLAN_EID_PWR_CONSTRAINT:
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elems->pwr_constr_elem = pos;
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elems->pwr_constr_elem_len = elen;
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break;
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case WLAN_EID_TIMEOUT_INTERVAL:
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elems->timeout_int = pos;
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elems->timeout_int_len = elen;
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break;
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default:
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break;
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}
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left -= elen;
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pos += elen;
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}
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return crc;
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}
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void rtllib_parse_elems(u8 *start, size_t len,
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struct ieee802_11_elems *elems)
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{
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rtllib_parse_elems_crc(start, len, elems, 0, 0);
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}
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void ieee80211_scan_rx(struct rtllib_device *ieee, struct sk_buff *skb, struct rtllib_rx_stats *rx_status)
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{
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struct rtllib_hdr_4addr *header = (struct rtllib_hdr_4addr *)skb->data ;
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struct ieee80211_mgmt *mgmt;
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struct ieee80211_bss *bss;
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u8 *elements;
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struct ieee80211_channel *channel;
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size_t baselen;
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int freq;
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__le16 fc;
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bool presp, beacon = false;
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struct ieee802_11_elems elems;
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s32 signal = 0;
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if (skb->len < 2)
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return;
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mgmt = (struct ieee80211_mgmt *) skb->data;
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fc = mgmt->frame_control;
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if (skb->len < 24)
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return;
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presp = (WLAN_FC_GET_STYPE(header->frame_ctl) == RTLLIB_STYPE_PROBE_RESP);
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if (presp) {
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/* ignore ProbeResp to foreign address */
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if (memcmp(mgmt->da, ieee->dev->dev_addr, ETH_ALEN))
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return ;;
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presp = true;
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elements = mgmt->u.probe_resp.variable;
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baselen = offsetof(struct ieee80211_mgmt, u.probe_resp.variable);
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} else {
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beacon = (WLAN_FC_GET_STYPE(header->frame_ctl) == RTLLIB_STYPE_BEACON);
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baselen = offsetof(struct ieee80211_mgmt, u.beacon.variable);
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elements = mgmt->u.beacon.variable;
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}
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if (!presp && !beacon)
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return;
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if (baselen > skb->len)
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return;
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rtllib_parse_elems(elements, skb->len - baselen, &elems);
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if (elems.ds_params && elems.ds_params_len == 1)
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freq = rtllib_channel_to_frequency(elems.ds_params[0]);
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else
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return;
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channel = rtllib_get_channel(ieee->wdev.wiphy, freq);
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if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
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return;
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signal = rx_status->signal * 100;
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bss = (void *)cfg80211_inform_bss_frame(ieee->wdev.wiphy, channel,
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mgmt, skb->len, signal, GFP_ATOMIC);
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return;
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}
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#endif
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static inline void rtllib_monitor_rx(struct rtllib_device *ieee,
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struct sk_buff *skb,struct rtllib_rx_stats *rx_status,
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size_t hdr_length)
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{
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skb->dev = ieee->dev;
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skb_reset_mac_header(skb);
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skb_pull(skb, hdr_length);
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skb->pkt_type = PACKET_OTHERHOST;
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skb->protocol = __constant_htons(ETH_P_80211_RAW);
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memset(skb->cb, 0, sizeof(skb->cb));
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netif_rx(skb);
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}
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/* Called only as a tasklet (software IRQ) */
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static struct rtllib_frag_entry *
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rtllib_frag_cache_find(struct rtllib_device *ieee, unsigned int seq,
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unsigned int frag, u8 tid,u8 *src, u8 *dst)
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{
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struct rtllib_frag_entry *entry;
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int i;
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for (i = 0; i < RTLLIB_FRAG_CACHE_LEN; i++) {
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entry = &ieee->frag_cache[tid][i];
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if (entry->skb != NULL &&
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time_after(jiffies, entry->first_frag_time + 2 * HZ)) {
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RTLLIB_DEBUG_FRAG(
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"expiring fragment cache entry "
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"seq=%u last_frag=%u\n",
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entry->seq, entry->last_frag);
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dev_kfree_skb_any(entry->skb);
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entry->skb = NULL;
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}
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if (entry->skb != NULL && entry->seq == seq &&
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(entry->last_frag + 1 == frag || frag == -1) &&
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memcmp(entry->src_addr, src, ETH_ALEN) == 0 &&
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memcmp(entry->dst_addr, dst, ETH_ALEN) == 0)
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return entry;
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}
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return NULL;
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}
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/* Called only as a tasklet (software IRQ) */
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static struct sk_buff *
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rtllib_frag_cache_get(struct rtllib_device *ieee,
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struct rtllib_hdr_4addr *hdr)
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{
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struct sk_buff *skb = NULL;
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u16 fc = le16_to_cpu(hdr->frame_ctl);
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u16 sc = le16_to_cpu(hdr->seq_ctl);
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unsigned int frag = WLAN_GET_SEQ_FRAG(sc);
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unsigned int seq = WLAN_GET_SEQ_SEQ(sc);
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struct rtllib_frag_entry *entry;
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struct rtllib_hdr_3addrqos *hdr_3addrqos;
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struct rtllib_hdr_4addrqos *hdr_4addrqos;
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u8 tid;
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if (((fc & RTLLIB_FCTL_DSTODS) == RTLLIB_FCTL_DSTODS)&&RTLLIB_QOS_HAS_SEQ(fc)) {
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hdr_4addrqos = (struct rtllib_hdr_4addrqos *)hdr;
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tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & RTLLIB_QCTL_TID;
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tid = UP2AC(tid);
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tid ++;
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} else if (RTLLIB_QOS_HAS_SEQ(fc)) {
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hdr_3addrqos = (struct rtllib_hdr_3addrqos *)hdr;
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tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & RTLLIB_QCTL_TID;
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tid = UP2AC(tid);
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tid ++;
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} else {
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tid = 0;
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}
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if (frag == 0) {
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/* Reserve enough space to fit maximum frame length */
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skb = dev_alloc_skb(ieee->dev->mtu +
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sizeof(struct rtllib_hdr_4addr) +
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8 /* LLC */ +
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2 /* alignment */ +
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8 /* WEP */ +
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ETH_ALEN /* WDS */ +
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(RTLLIB_QOS_HAS_SEQ(fc)?2:0) /* QOS Control */);
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if (skb == NULL)
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return NULL;
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entry = &ieee->frag_cache[tid][ieee->frag_next_idx[tid]];
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ieee->frag_next_idx[tid]++;
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if (ieee->frag_next_idx[tid] >= RTLLIB_FRAG_CACHE_LEN)
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ieee->frag_next_idx[tid] = 0;
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if (entry->skb != NULL)
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dev_kfree_skb_any(entry->skb);
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entry->first_frag_time = jiffies;
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entry->seq = seq;
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entry->last_frag = frag;
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entry->skb = skb;
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memcpy(entry->src_addr, hdr->addr2, ETH_ALEN);
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memcpy(entry->dst_addr, hdr->addr1, ETH_ALEN);
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} else {
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/* received a fragment of a frame for which the head fragment
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* should have already been received */
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entry = rtllib_frag_cache_find(ieee, seq, frag, tid,hdr->addr2,
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hdr->addr1);
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if (entry != NULL) {
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entry->last_frag = frag;
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skb = entry->skb;
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}
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}
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return skb;
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}
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/* Called only as a tasklet (software IRQ) */
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static int rtllib_frag_cache_invalidate(struct rtllib_device *ieee,
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struct rtllib_hdr_4addr *hdr)
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{
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u16 fc = le16_to_cpu(hdr->frame_ctl);
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u16 sc = le16_to_cpu(hdr->seq_ctl);
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unsigned int seq = WLAN_GET_SEQ_SEQ(sc);
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struct rtllib_frag_entry *entry;
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struct rtllib_hdr_3addrqos *hdr_3addrqos;
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struct rtllib_hdr_4addrqos *hdr_4addrqos;
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u8 tid;
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if (((fc & RTLLIB_FCTL_DSTODS) == RTLLIB_FCTL_DSTODS)&&RTLLIB_QOS_HAS_SEQ(fc)) {
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hdr_4addrqos = (struct rtllib_hdr_4addrqos *)hdr;
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tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & RTLLIB_QCTL_TID;
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tid = UP2AC(tid);
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tid ++;
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} else if (RTLLIB_QOS_HAS_SEQ(fc)) {
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hdr_3addrqos = (struct rtllib_hdr_3addrqos *)hdr;
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tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & RTLLIB_QCTL_TID;
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tid = UP2AC(tid);
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tid ++;
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} else {
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tid = 0;
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}
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entry = rtllib_frag_cache_find(ieee, seq, -1, tid,hdr->addr2,
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hdr->addr1);
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if (entry == NULL) {
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RTLLIB_DEBUG_FRAG(
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"could not invalidate fragment cache "
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"entry (seq=%u)\n", seq);
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return -1;
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}
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entry->skb = NULL;
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return 0;
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}
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/* rtllib_rx_frame_mgtmt
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*
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* Responsible for handling management control frames
|
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*
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* Called by rtllib_rx */
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static inline int
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rtllib_rx_frame_mgmt(struct rtllib_device *ieee, struct sk_buff *skb,
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struct rtllib_rx_stats *rx_stats, u16 type,
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u16 stype)
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{
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|
/* On the struct stats definition there is written that
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* this is not mandatory.... but seems that the probe
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* response parser uses it
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*/
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struct rtllib_hdr_3addr * hdr = (struct rtllib_hdr_3addr *)skb->data;
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rx_stats->len = skb->len;
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rtllib_rx_mgt(ieee,skb,rx_stats);
|
|
if ((memcmp(hdr->addr1, ieee->dev->dev_addr, ETH_ALEN))) {
|
|
dev_kfree_skb_any(skb);
|
|
return 0;
|
|
}
|
|
rtllib_rx_frame_softmac(ieee, skb, rx_stats, type, stype);
|
|
|
|
dev_kfree_skb_any(skb);
|
|
|
|
return 0;
|
|
|
|
#ifdef NOT_YET
|
|
if (ieee->iw_mode == IW_MODE_MASTER) {
|
|
printk(KERN_DEBUG "%s: Master mode not yet suppported.\n",
|
|
ieee->dev->name);
|
|
return 0;
|
|
/*
|
|
hostap_update_sta_ps(ieee, (struct hostap_rtllib_hdr_4addr *)
|
|
skb->data);*/
|
|
}
|
|
|
|
if (ieee->hostapd && type == RTLLIB_TYPE_MGMT) {
|
|
if (stype == WLAN_FC_STYPE_BEACON &&
|
|
ieee->iw_mode == IW_MODE_MASTER) {
|
|
struct sk_buff *skb2;
|
|
/* Process beacon frames also in kernel driver to
|
|
* update STA(AP) table statistics */
|
|
skb2 = skb_clone(skb, GFP_ATOMIC);
|
|
if (skb2)
|
|
hostap_rx(skb2->dev, skb2, rx_stats);
|
|
}
|
|
|
|
/* send management frames to the user space daemon for
|
|
* processing */
|
|
ieee->apdevstats.rx_packets++;
|
|
ieee->apdevstats.rx_bytes += skb->len;
|
|
prism2_rx_80211(ieee->apdev, skb, rx_stats, PRISM2_RX_MGMT);
|
|
return 0;
|
|
}
|
|
|
|
if (ieee->iw_mode == IW_MODE_MASTER) {
|
|
if (type != WLAN_FC_TYPE_MGMT && type != WLAN_FC_TYPE_CTRL) {
|
|
printk(KERN_DEBUG "%s: unknown management frame "
|
|
"(type=0x%02x, stype=0x%02x) dropped\n",
|
|
skb->dev->name, type, stype);
|
|
return -1;
|
|
}
|
|
|
|
hostap_rx(skb->dev, skb, rx_stats);
|
|
return 0;
|
|
}
|
|
|
|
printk(KERN_DEBUG "%s: hostap_rx_frame_mgmt: management frame "
|
|
"received in non-Host AP mode\n", skb->dev->name);
|
|
return -1;
|
|
#endif
|
|
}
|
|
|
|
#ifndef CONFIG_CFG_80211
|
|
/* 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) */
|
|
#endif
|
|
|
|
/* Called by rtllib_rx_frame_decrypt */
|
|
static int rtllib_is_eapol_frame(struct rtllib_device *ieee,
|
|
struct sk_buff *skb, size_t hdrlen)
|
|
{
|
|
struct net_device *dev = ieee->dev;
|
|
u16 fc, ethertype;
|
|
struct rtllib_hdr_4addr *hdr;
|
|
u8 *pos;
|
|
|
|
if (skb->len < 24)
|
|
return 0;
|
|
|
|
hdr = (struct rtllib_hdr_4addr *) skb->data;
|
|
fc = le16_to_cpu(hdr->frame_ctl);
|
|
|
|
/* check that the frame is unicast frame to us */
|
|
if ((fc & (RTLLIB_FCTL_TODS | RTLLIB_FCTL_FROMDS)) ==
|
|
RTLLIB_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 & (RTLLIB_FCTL_TODS | RTLLIB_FCTL_FROMDS)) ==
|
|
RTLLIB_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 + hdrlen;
|
|
ethertype = (pos[6] << 8) | pos[7];
|
|
if (ethertype == ETH_P_PAE)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Called only as a tasklet (software IRQ), by rtllib_rx */
|
|
static inline int
|
|
rtllib_rx_frame_decrypt(struct rtllib_device* ieee, struct sk_buff *skb,
|
|
struct rtllib_crypt_data *crypt)
|
|
{
|
|
struct rtllib_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;
|
|
|
|
if (ieee->need_sw_enc)
|
|
tcb_desc->bHwSec = 0;
|
|
}
|
|
#endif
|
|
hdr = (struct rtllib_hdr_4addr *) skb->data;
|
|
hdrlen = rtllib_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
|
|
|
|
#ifdef CONFIG_RTLLIB_CRYPT_TKIP
|
|
if (ieee->tkip_countermeasures &&
|
|
strcmp(crypt->ops->name, "TKIP") == 0) {
|
|
if (net_ratelimit()) {
|
|
printk(KERN_DEBUG "%s: TKIP countermeasures: dropped "
|
|
"received packet from " MAC_FMT "\n",
|
|
ieee->dev->name, MAC_ARG(hdr->addr2));
|
|
}
|
|
return -1;
|
|
}
|
|
#endif
|
|
|
|
atomic_inc(&crypt->refcnt);
|
|
res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv);
|
|
atomic_dec(&crypt->refcnt);
|
|
if (res < 0) {
|
|
RTLLIB_DEBUG_DROP(
|
|
"decryption failed (SA=" MAC_FMT
|
|
") res=%d\n", MAC_ARG(hdr->addr2), res);
|
|
if (res == -2)
|
|
RTLLIB_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 rtllib_rx */
|
|
static inline int
|
|
rtllib_rx_frame_decrypt_msdu(struct rtllib_device* ieee, struct sk_buff *skb,
|
|
int keyidx, struct rtllib_crypt_data *crypt)
|
|
{
|
|
struct rtllib_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;
|
|
|
|
if (ieee->need_sw_enc)
|
|
tcb_desc->bHwSec = 0;
|
|
}
|
|
|
|
hdr = (struct rtllib_hdr_4addr *) skb->data;
|
|
hdrlen = rtllib_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=" MAC_FMT " keyidx=%d)\n",
|
|
ieee->dev->name, MAC_ARG(hdr->addr2), keyidx);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* this function is stolen from ipw2200 driver*/
|
|
#define IEEE_PACKET_RETRY_TIME (5*HZ)
|
|
static int is_duplicate_packet(struct rtllib_device *ieee,
|
|
struct rtllib_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 rtllib_hdr_3addrqos *hdr_3addrqos;
|
|
struct rtllib_hdr_4addrqos *hdr_4addrqos;
|
|
u8 tid;
|
|
|
|
if (((fc & RTLLIB_FCTL_DSTODS) == RTLLIB_FCTL_DSTODS)&&RTLLIB_QOS_HAS_SEQ(fc)) {
|
|
hdr_4addrqos = (struct rtllib_hdr_4addrqos *)header;
|
|
tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & RTLLIB_QCTL_TID;
|
|
tid = UP2AC(tid);
|
|
tid ++;
|
|
} else if (RTLLIB_QOS_HAS_SEQ(fc)) {
|
|
hdr_3addrqos = (struct rtllib_hdr_3addrqos*)header;
|
|
tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & RTLLIB_QCTL_TID;
|
|
tid = UP2AC(tid);
|
|
tid ++;
|
|
} else {
|
|
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 (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 ((*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:
|
|
|
|
return 1;
|
|
}
|
|
bool
|
|
AddReorderEntry(
|
|
PRX_TS_RECORD pTS,
|
|
PRX_REORDER_ENTRY pReorderEntry
|
|
)
|
|
{
|
|
struct list_head *pList = &pTS->RxPendingPktList;
|
|
|
|
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;
|
|
}
|
|
}
|
|
pReorderEntry->List.next = pList->next;
|
|
pReorderEntry->List.next->prev = &pReorderEntry->List;
|
|
pReorderEntry->List.prev = pList;
|
|
pList->next = &pReorderEntry->List;
|
|
|
|
return true;
|
|
}
|
|
|
|
void rtllib_indicate_packets(struct rtllib_device *ieee, struct rtllib_rxb** prxbIndicateArray,u8 index)
|
|
{
|
|
struct net_device_stats *stats = &ieee->stats;
|
|
u8 i = 0 , j=0;
|
|
u16 ethertype;
|
|
for (j = 0; j < index; j++) {
|
|
struct rtllib_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);
|
|
}
|
|
|
|
/* Indicat the packets to upper layer */
|
|
if (sub_skb) {
|
|
stats->rx_packets++;
|
|
stats->rx_bytes += sub_skb->len;
|
|
|
|
memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
|
|
sub_skb->protocol = eth_type_trans(sub_skb, ieee->dev);
|
|
sub_skb->dev = ieee->dev;
|
|
sub_skb->dev->stats.rx_packets++;
|
|
sub_skb->dev->stats.rx_bytes += sub_skb->len;
|
|
#ifdef TCP_CSUM_OFFLOAD_RX
|
|
if ( prxb->tcp_csum_valid)
|
|
sub_skb->ip_summed = CHECKSUM_UNNECESSARY;
|
|
else
|
|
sub_skb->ip_summed = CHECKSUM_NONE;
|
|
|
|
#else
|
|
sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
|
|
#endif
|
|
ieee->last_rx_ps_time = jiffies;
|
|
netif_rx(sub_skb);
|
|
}
|
|
}
|
|
kfree(prxb);
|
|
prxb = NULL;
|
|
}
|
|
}
|
|
|
|
void
|
|
rtllib_FlushRxTsPendingPkts(struct rtllib_device *ieee, PRX_TS_RECORD pTS)
|
|
{
|
|
PRX_REORDER_ENTRY pRxReorderEntry;
|
|
struct rtllib_rxb* RfdArray[REORDER_WIN_SIZE];
|
|
u8 RfdCnt = 0;
|
|
|
|
|
|
del_timer_sync(&pTS->RxPktPendingTimer);
|
|
while(!list_empty(&pTS->RxPendingPktList))
|
|
{
|
|
if (RfdCnt >= REORDER_WIN_SIZE){
|
|
printk("-------------->%s() error! RfdCnt >= REORDER_WIN_SIZE\n", __func__);
|
|
break;
|
|
}
|
|
|
|
pRxReorderEntry = (PRX_REORDER_ENTRY)list_entry(pTS->RxPendingPktList.prev,RX_REORDER_ENTRY,List);
|
|
RTLLIB_DEBUG(RTLLIB_DL_REORDER,"%s(): Indicate SeqNum %d!\n",__func__, pRxReorderEntry->SeqNum);
|
|
list_del_init(&pRxReorderEntry->List);
|
|
|
|
RfdArray[RfdCnt] = pRxReorderEntry->prxb;
|
|
|
|
RfdCnt = RfdCnt + 1;
|
|
list_add_tail(&pRxReorderEntry->List, &ieee->RxReorder_Unused_List);
|
|
}
|
|
rtllib_indicate_packets(ieee, RfdArray, RfdCnt);
|
|
|
|
pTS->RxIndicateSeq = 0xffff;
|
|
|
|
#ifdef MERGE_TO_DO
|
|
#endif
|
|
}
|
|
|
|
|
|
void RxReorderIndicatePacket( struct rtllib_device *ieee,
|
|
struct rtllib_rxb* prxb,
|
|
PRX_TS_RECORD pTS,
|
|
u16 SeqNum)
|
|
{
|
|
PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
|
|
PRX_REORDER_ENTRY pReorderEntry = NULL;
|
|
struct rtllib_rxb* prxbIndicateArray[REORDER_WIN_SIZE];
|
|
u8 WinSize = pHTInfo->RxReorderWinSize;
|
|
u16 WinEnd = 0;
|
|
u8 index = 0;
|
|
bool bMatchWinStart = false, bPktInBuf = false;
|
|
unsigned long flags;
|
|
|
|
RTLLIB_DEBUG(RTLLIB_DL_REORDER,"%s(): Seq is %d,pTS->RxIndicateSeq is %d, WinSize is %d\n",__func__,SeqNum,pTS->RxIndicateSeq,WinSize);
|
|
|
|
spin_lock_irqsave(&(ieee->reorder_spinlock), flags);
|
|
|
|
WinEnd = (pTS->RxIndicateSeq + WinSize -1)%4096;
|
|
/* 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)) {
|
|
RTLLIB_DEBUG(RTLLIB_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;
|
|
}
|
|
spin_unlock_irqrestore(&(ieee->reorder_spinlock), flags);
|
|
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;
|
|
}
|
|
RTLLIB_DEBUG(RTLLIB_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.*/
|
|
RTLLIB_DEBUG(RTLLIB_DL_REORDER, "Packets indication!! IndicateSeq: %d, NewSeq: %d\n",\
|
|
pTS->RxIndicateSeq, SeqNum);
|
|
prxbIndicateArray[0] = prxb;
|
|
index = 1;
|
|
} else {
|
|
/* Current packet is going to be inserted into pending list.*/
|
|
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;
|
|
|
|
#if 1
|
|
if (!AddReorderEntry(pTS, pReorderEntry)) {
|
|
RTLLIB_DEBUG(RTLLIB_DL_REORDER, "%s(): Duplicate packet is dropped!! IndicateSeq: %d, NewSeq: %d\n",
|
|
__func__, 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 {
|
|
RTLLIB_DEBUG(RTLLIB_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.
|
|
*/
|
|
RTLLIB_DEBUG(RTLLIB_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)) {
|
|
RTLLIB_DEBUG(RTLLIB_DL_REORDER,"%s(): start RREORDER indicate\n",__func__);
|
|
#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) {
|
|
RTLLIB_DEBUG(RTLLIB_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;
|
|
|
|
prxbIndicateArray[index] = pReorderEntry->prxb;
|
|
RTLLIB_DEBUG(RTLLIB_DL_REORDER,"%s(): Indicate SeqNum %d!\n",__func__, 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) {
|
|
if (timer_pending(&pTS->RxPktPendingTimer)){
|
|
del_timer_sync(&pTS->RxPktPendingTimer);
|
|
}
|
|
pTS->RxTimeoutIndicateSeq = 0xffff;
|
|
|
|
if (index>REORDER_WIN_SIZE){
|
|
RTLLIB_DEBUG(RTLLIB_DL_ERR, "RxReorderIndicatePacket(): Rx Reorer buffer full!! \n");
|
|
spin_unlock_irqrestore(&(ieee->reorder_spinlock), flags);
|
|
return;
|
|
}
|
|
rtllib_indicate_packets(ieee, prxbIndicateArray, index);
|
|
bPktInBuf = false;
|
|
}
|
|
|
|
if (bPktInBuf && pTS->RxTimeoutIndicateSeq==0xffff) {
|
|
RTLLIB_DEBUG(RTLLIB_DL_REORDER,"%s(): SET rx timeout timer\n", __func__);
|
|
pTS->RxTimeoutIndicateSeq = pTS->RxIndicateSeq;
|
|
mod_timer(&pTS->RxPktPendingTimer, jiffies + MSECS(pHTInfo->RxReorderPendingTime));
|
|
}
|
|
spin_unlock_irqrestore(&(ieee->reorder_spinlock), flags);
|
|
}
|
|
|
|
u8 parse_subframe(struct rtllib_device* ieee,struct sk_buff *skb,
|
|
struct rtllib_rx_stats *rx_stats,
|
|
struct rtllib_rxb *rxb,u8* src,u8* dst)
|
|
{
|
|
struct rtllib_hdr_3addr *hdr = (struct rtllib_hdr_3addr* )skb->data;
|
|
u16 fc = le16_to_cpu(hdr->frame_ctl);
|
|
|
|
u16 LLCOffset= sizeof(struct rtllib_hdr_3addr);
|
|
u16 ChkLength;
|
|
bool bIsAggregateFrame = false;
|
|
u16 nSubframe_Length;
|
|
u8 nPadding_Length = 0;
|
|
u16 SeqNum=0;
|
|
struct sk_buff *sub_skb;
|
|
u8 *data_ptr;
|
|
/* just for debug purpose */
|
|
SeqNum = WLAN_GET_SEQ_SEQ(le16_to_cpu(hdr->seq_ctl));
|
|
if ((RTLLIB_QOS_HAS_SEQ(fc))&&\
|
|
(((frameqos *)(skb->data + RTLLIB_3ADDR_LEN))->field.reserved)) {
|
|
bIsAggregateFrame = true;
|
|
}
|
|
|
|
if (RTLLIB_QOS_HAS_SEQ(fc)) {
|
|
LLCOffset += 2;
|
|
}
|
|
if (rx_stats->bContainHTC) {
|
|
LLCOffset += sHTCLng;
|
|
}
|
|
|
|
ChkLength = LLCOffset;/* + (Frame_WEP(frame)!=0 ?Adapter->MgntInfo.SecurityInfo.EncryptionHeadOverhead:0);*/
|
|
|
|
if ( skb->len <= ChkLength ) {
|
|
return 0;
|
|
}
|
|
|
|
skb_pull(skb, LLCOffset);
|
|
ieee->bIsAggregateFrame = bIsAggregateFrame;
|
|
if (!bIsAggregateFrame) {
|
|
rxb->nr_subframes = 1;
|
|
|
|
/* altered by clark 3/30/2010
|
|
* The buffer size of the skb indicated to upper layer
|
|
* must be less than 5000, or the defraged IP datagram
|
|
* in the IP layer will exceed "ipfrag_high_tresh" and be
|
|
* discarded. so there must not use the function
|
|
* "skb_copy" and "skb_clone" for "skb".
|
|
*/
|
|
|
|
/* Allocate new skb for releasing to upper layer */
|
|
sub_skb = dev_alloc_skb(RTLLIB_SKBBUFFER_SIZE);
|
|
skb_reserve(sub_skb, 12);
|
|
data_ptr = (u8 *)skb_put(sub_skb, skb->len);
|
|
memcpy(data_ptr, skb->data, skb->len);
|
|
sub_skb->dev = ieee->dev;
|
|
|
|
rxb->subframes[0] = sub_skb;
|
|
|
|
memcpy(rxb->src,src,ETH_ALEN);
|
|
memcpy(rxb->dst,dst,ETH_ALEN);
|
|
rxb->subframes[0]->dev = ieee->dev;
|
|
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));
|
|
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",\
|
|
__func__,rxb->nr_subframes);
|
|
printk("%s: A-MSDU parse error!! Subframe Length: %d\n",__func__, 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);
|
|
|
|
/* altered by clark 3/30/2010
|
|
* The buffer size of the skb indicated to upper layer
|
|
* must be less than 5000, or the defraged IP datagram
|
|
* in the IP layer will exceed "ipfrag_high_tresh" and be
|
|
* discarded. so there must not use the function
|
|
* "skb_copy" and "skb_clone" for "skb".
|
|
*/
|
|
|
|
/* 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);
|
|
|
|
sub_skb->dev = ieee->dev;
|
|
rxb->subframes[rxb->nr_subframes++] = sub_skb;
|
|
if (rxb->nr_subframes >= MAX_SUBFRAME_COUNT) {
|
|
RTLLIB_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);
|
|
}
|
|
}
|
|
|
|
return rxb->nr_subframes;
|
|
}
|
|
}
|
|
|
|
|
|
size_t rtllib_rx_get_hdrlen(struct rtllib_device *ieee, struct sk_buff *skb,
|
|
struct rtllib_rx_stats *rx_stats)
|
|
{
|
|
struct rtllib_hdr_4addr *hdr = (struct rtllib_hdr_4addr *)skb->data;
|
|
u16 fc = le16_to_cpu(hdr->frame_ctl);
|
|
size_t hdrlen = 0;
|
|
|
|
hdrlen = rtllib_get_hdrlen(fc);
|
|
if (HTCCheck(ieee, skb->data)) {
|
|
if (net_ratelimit())
|
|
printk("%s: find HTCControl!\n", __func__);
|
|
hdrlen += 4;
|
|
rx_stats->bContainHTC = 1;
|
|
}
|
|
|
|
if (RTLLIB_QOS_HAS_SEQ(fc))
|
|
rx_stats->bIsQosData = 1;
|
|
|
|
return hdrlen;
|
|
}
|
|
|
|
int rtllib_rx_check_duplicate(struct rtllib_device *ieee, struct sk_buff *skb, u8 multicast)
|
|
{
|
|
struct rtllib_hdr_4addr *hdr = (struct rtllib_hdr_4addr *)skb->data;
|
|
u16 fc, sc;
|
|
u8 frag, type, stype;
|
|
|
|
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);
|
|
|
|
if ( (ieee->pHTInfo->bCurRxReorderEnable == false) ||
|
|
!ieee->current_network.qos_data.active ||
|
|
!IsDataFrame(skb->data) ||
|
|
IsLegacyDataFrame(skb->data)) {
|
|
if (!((type == RTLLIB_FTYPE_MGMT) && (stype == RTLLIB_STYPE_BEACON))){
|
|
if (is_duplicate_packet(ieee, hdr)){
|
|
return -1;
|
|
}
|
|
}
|
|
} else {
|
|
PRX_TS_RECORD pRxTS = NULL;
|
|
if (GetTs(ieee, (PTS_COMMON_INFO*) &pRxTS, hdr->addr2,
|
|
(u8)Frame_QoSTID((u8*)(skb->data)), RX_DIR, true)) {
|
|
if ((fc & (1<<11)) && (frag == pRxTS->RxLastFragNum) &&
|
|
(WLAN_GET_SEQ_SEQ(sc) == pRxTS->RxLastSeqNum)) {
|
|
return -1;
|
|
} else {
|
|
pRxTS->RxLastFragNum = frag;
|
|
pRxTS->RxLastSeqNum = WLAN_GET_SEQ_SEQ(sc);
|
|
}
|
|
} else {
|
|
RTLLIB_DEBUG(RTLLIB_DL_ERR, "ERR!!%s(): No TS!! Skip the check!!\n",__func__);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
void rtllib_rx_extract_addr(struct rtllib_device *ieee, struct rtllib_hdr_4addr *hdr, u8 *dst, u8 *src, u8 *bssid)
|
|
{
|
|
u16 fc = le16_to_cpu(hdr->frame_ctl);
|
|
|
|
switch (fc & (RTLLIB_FCTL_FROMDS | RTLLIB_FCTL_TODS)) {
|
|
case RTLLIB_FCTL_FROMDS:
|
|
memcpy(dst, hdr->addr1, ETH_ALEN);
|
|
memcpy(src, hdr->addr3, ETH_ALEN);
|
|
memcpy(bssid, hdr->addr2, ETH_ALEN);
|
|
break;
|
|
case RTLLIB_FCTL_TODS:
|
|
memcpy(dst, hdr->addr3, ETH_ALEN);
|
|
memcpy(src, hdr->addr2, ETH_ALEN);
|
|
memcpy(bssid, hdr->addr1, ETH_ALEN);
|
|
break;
|
|
case RTLLIB_FCTL_FROMDS | RTLLIB_FCTL_TODS:
|
|
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;
|
|
}
|
|
}
|
|
int rtllib_rx_data_filter(struct rtllib_device *ieee, u16 fc, u8 *dst, u8 *src, u8 *bssid, u8 *addr2)
|
|
{
|
|
u8 zero_addr[ETH_ALEN] = {0};
|
|
u8 type, stype;
|
|
|
|
type = WLAN_FC_GET_TYPE(fc);
|
|
stype = WLAN_FC_GET_STYPE(fc);
|
|
|
|
/* Filter frames from different BSS */
|
|
if (((fc & RTLLIB_FCTL_DSTODS) != RTLLIB_FCTL_DSTODS)
|
|
&& (compare_ether_addr(ieee->current_network.bssid, bssid) != 0)
|
|
&& memcmp(ieee->current_network.bssid, zero_addr, ETH_ALEN)) {
|
|
return -1;
|
|
}
|
|
|
|
/* Filter packets sent by an STA that will be forwarded by AP */
|
|
if ( ieee->IntelPromiscuousModeInfo.bPromiscuousOn &&
|
|
ieee->IntelPromiscuousModeInfo.bFilterSourceStationFrame ) {
|
|
if ((fc & RTLLIB_FCTL_TODS) && !(fc & RTLLIB_FCTL_FROMDS) &&
|
|
(compare_ether_addr(dst, ieee->current_network.bssid) != 0) &&
|
|
(compare_ether_addr(bssid, ieee->current_network.bssid) == 0)) {
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
/* Nullfunc frames may have PS-bit set, so they must be passed to
|
|
* hostap_handle_sta_rx() before being dropped here. */
|
|
if (!ieee->IntelPromiscuousModeInfo.bPromiscuousOn){
|
|
if (stype != RTLLIB_STYPE_DATA &&
|
|
stype != RTLLIB_STYPE_DATA_CFACK &&
|
|
stype != RTLLIB_STYPE_DATA_CFPOLL &&
|
|
stype != RTLLIB_STYPE_DATA_CFACKPOLL&&
|
|
stype != RTLLIB_STYPE_QOS_DATA
|
|
) {
|
|
if (stype != RTLLIB_STYPE_NULLFUNC)
|
|
RTLLIB_DEBUG_DROP(
|
|
"RX: dropped data frame "
|
|
"with no data (type=0x%02x, "
|
|
"subtype=0x%02x)\n",
|
|
type, stype);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if (ieee->iw_mode != IW_MODE_MESH) {
|
|
/* packets from our adapter are dropped (echo) */
|
|
if (!memcmp(src, ieee->dev->dev_addr, ETH_ALEN))
|
|
return -1;
|
|
|
|
/* {broad,multi}cast packets to our BSS go through */
|
|
if (is_multicast_ether_addr(dst) || is_broadcast_ether_addr(dst)) {
|
|
if (memcmp(bssid, ieee->current_network.bssid, ETH_ALEN)) {
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
int rtllib_rx_get_crypt(
|
|
struct rtllib_device *ieee,
|
|
struct sk_buff *skb,
|
|
struct rtllib_crypt_data **crypt,
|
|
size_t hdrlen)
|
|
{
|
|
struct rtllib_hdr_4addr *hdr = (struct rtllib_hdr_4addr *)skb->data;
|
|
u16 fc = le16_to_cpu(hdr->frame_ctl);
|
|
int idx = 0;
|
|
|
|
if (ieee->host_decrypt) {
|
|
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 & RTLLIB_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. */
|
|
RTLLIB_DEBUG_DROP("Decryption failed (not set)"
|
|
" (SA=" MAC_FMT ")\n",
|
|
MAC_ARG(hdr->addr2));
|
|
ieee->ieee_stats.rx_discards_undecryptable++;
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
int rtllib_rx_decrypt(
|
|
struct rtllib_device *ieee,
|
|
struct sk_buff *skb,
|
|
struct rtllib_rx_stats *rx_stats,
|
|
struct rtllib_crypt_data *crypt,
|
|
size_t hdrlen)
|
|
{
|
|
struct rtllib_hdr_4addr *hdr;
|
|
int keyidx = 0;
|
|
u16 fc, sc;
|
|
u8 frag;
|
|
|
|
hdr = (struct rtllib_hdr_4addr *)skb->data;
|
|
fc = le16_to_cpu(hdr->frame_ctl);
|
|
sc = le16_to_cpu(hdr->seq_ctl);
|
|
frag = WLAN_GET_SEQ_FRAG(sc);
|
|
|
|
if ((!rx_stats->Decrypted)){
|
|
ieee->need_sw_enc = 1;
|
|
}else{
|
|
ieee->need_sw_enc = 0;
|
|
}
|
|
|
|
if (ieee->host_decrypt && (fc & RTLLIB_FCTL_WEP) &&
|
|
((keyidx = rtllib_rx_frame_decrypt(ieee, skb, crypt)) < 0)) {
|
|
printk("%s: decrypt frame error\n", __func__);
|
|
return -1;
|
|
}
|
|
|
|
hdr = (struct rtllib_hdr_4addr *) skb->data;
|
|
if ((frag != 0 || (fc & RTLLIB_FCTL_MOREFRAGS))) {
|
|
int flen;
|
|
struct sk_buff *frag_skb = rtllib_frag_cache_get(ieee, hdr);
|
|
RTLLIB_DEBUG_FRAG("Rx Fragment received (%u)\n", frag);
|
|
|
|
if (!frag_skb) {
|
|
RTLLIB_DEBUG(RTLLIB_DL_RX | RTLLIB_DL_FRAG,
|
|
"Rx cannot get skb from fragment "
|
|
"cache (morefrag=%d seq=%u frag=%u)\n",
|
|
(fc & RTLLIB_FCTL_MOREFRAGS) != 0,
|
|
WLAN_GET_SEQ_SEQ(sc), frag);
|
|
return -1;
|
|
}
|
|
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",
|
|
__func__);
|
|
rtllib_frag_cache_invalidate(ieee, hdr);
|
|
return -1;
|
|
}
|
|
|
|
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 & RTLLIB_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 */
|
|
return -2;
|
|
}
|
|
|
|
/* this was the last fragment and the frame will be
|
|
* delivered, so remove skb from fragment cache */
|
|
skb = frag_skb;
|
|
hdr = (struct rtllib_hdr_4addr *) skb->data;
|
|
rtllib_frag_cache_invalidate(ieee, hdr);
|
|
}
|
|
|
|
/* skb: hdr + (possible reassembled) full MSDU payload; possibly still
|
|
* encrypted/authenticated */
|
|
if (ieee->host_decrypt && (fc & RTLLIB_FCTL_WEP) &&
|
|
rtllib_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt))
|
|
{
|
|
printk("%s: ==>decrypt msdu error\n", __func__);
|
|
return -1;
|
|
}
|
|
|
|
hdr = (struct rtllib_hdr_4addr *) skb->data;
|
|
if (crypt && !(fc & RTLLIB_FCTL_WEP) && !ieee->open_wep) {
|
|
if (/*ieee->ieee802_1x &&*/
|
|
rtllib_is_eapol_frame(ieee, skb, hdrlen)) {
|
|
|
|
#ifdef CONFIG_RTLLIB_DEBUG
|
|
/* pass unencrypted EAPOL frames even if encryption is
|
|
* configured */
|
|
struct eapol *eap = (struct eapol *)(skb->data +
|
|
24);
|
|
RTLLIB_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
|
|
eap_get_type(eap->type));
|
|
#endif
|
|
} else {
|
|
RTLLIB_DEBUG_DROP(
|
|
"encryption configured, but RX "
|
|
"frame not encrypted (SA=" MAC_FMT ")\n",
|
|
MAC_ARG(hdr->addr2));
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_RTLLIB_DEBUG
|
|
if (crypt && !(fc & RTLLIB_FCTL_WEP) &&
|
|
rtllib_is_eapol_frame(ieee, skb, hdrlen)) {
|
|
struct eapol *eap = (struct eapol *)(skb->data +
|
|
24);
|
|
RTLLIB_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
|
|
eap_get_type(eap->type));
|
|
}
|
|
#endif
|
|
|
|
if (crypt && !(fc & RTLLIB_FCTL_WEP) && !ieee->open_wep &&
|
|
!rtllib_is_eapol_frame(ieee, skb, hdrlen)) {
|
|
RTLLIB_DEBUG_DROP(
|
|
"dropped unencrypted RX data "
|
|
"frame from " MAC_FMT
|
|
" (drop_unencrypted=1)\n",
|
|
MAC_ARG(hdr->addr2));
|
|
return -1;
|
|
}
|
|
|
|
if (rtllib_is_eapol_frame(ieee, skb, hdrlen)) {
|
|
printk(KERN_WARNING "RX: IEEE802.1X EAPOL frame!\n");
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
void rtllib_rx_check_leave_lps(struct rtllib_device *ieee, u8 unicast, u8 nr_subframes)
|
|
{
|
|
#if !defined(RTL8192SU) && !defined(RTL8192U)
|
|
if (unicast){
|
|
|
|
if ((ieee->state == RTLLIB_LINKED) /*&& !MgntInitAdapterInProgress(pMgntInfo)*/)
|
|
{
|
|
if ( ((ieee->LinkDetectInfo.NumRxUnicastOkInPeriod +ieee->LinkDetectInfo.NumTxOkInPeriod) > 8 ) ||
|
|
(ieee->LinkDetectInfo.NumRxUnicastOkInPeriod > 2) )
|
|
{
|
|
if (ieee->LeisurePSLeave)
|
|
ieee->LeisurePSLeave(ieee->dev);
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
ieee->last_rx_ps_time = jiffies;
|
|
}
|
|
void rtllib_rx_indicate_pkt_legacy(
|
|
struct rtllib_device *ieee,
|
|
struct rtllib_rx_stats *rx_stats,
|
|
struct rtllib_rxb* rxb,
|
|
u8 *dst,
|
|
u8 *src)
|
|
{
|
|
struct net_device *dev = ieee->dev;
|
|
u16 ethertype;
|
|
int i = 0;
|
|
|
|
if (rxb == NULL){
|
|
printk("%s: rxb is NULL!!\n", __func__);
|
|
return ;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
ieee->stats.rx_packets++;
|
|
ieee->stats.rx_bytes += sub_skb->len;
|
|
|
|
if (is_multicast_ether_addr(dst)) {
|
|
ieee->stats.multicast++;
|
|
}
|
|
|
|
/* Indicat the packets to upper layer */
|
|
memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
|
|
sub_skb->protocol = eth_type_trans(sub_skb, dev);
|
|
sub_skb->dev = dev;
|
|
sub_skb->dev->stats.rx_packets++;
|
|
sub_skb->dev->stats.rx_bytes += sub_skb->len;
|
|
#ifdef TCP_CSUM_OFFLOAD_RX
|
|
if ( rx_stats->tcp_csum_valid)
|
|
sub_skb->ip_summed = CHECKSUM_UNNECESSARY;
|
|
else
|
|
sub_skb->ip_summed = CHECKSUM_NONE;
|
|
#else
|
|
sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
|
|
#endif
|
|
netif_rx(sub_skb);
|
|
}
|
|
}
|
|
kfree(rxb);
|
|
rxb = NULL;
|
|
}
|
|
int rtllib_rx_InfraAdhoc(struct rtllib_device *ieee, struct sk_buff *skb,
|
|
struct rtllib_rx_stats *rx_stats)
|
|
{
|
|
struct net_device *dev = ieee->dev;
|
|
struct rtllib_hdr_4addr *hdr = (struct rtllib_hdr_4addr *)skb->data;
|
|
struct rtllib_crypt_data *crypt = NULL;
|
|
#if defined(RTL8192U) || defined(RTL8192SU) || defined(RTL8192SE)
|
|
struct sta_info * psta = NULL;
|
|
#endif
|
|
struct rtllib_rxb* rxb = NULL;
|
|
PRX_TS_RECORD pTS = NULL;
|
|
u16 fc, sc, SeqNum = 0;
|
|
u8 type, stype, multicast = 0, unicast = 0, nr_subframes = 0, TID = 0;
|
|
u8 dst[ETH_ALEN], src[ETH_ALEN], bssid[ETH_ALEN] = {0}, *payload;
|
|
size_t hdrlen = 0;
|
|
bool bToOtherSTA = false;
|
|
int ret = 0, i = 0;
|
|
|
|
hdr = (struct rtllib_hdr_4addr *)skb->data;
|
|
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);
|
|
|
|
/*Filter pkt not to me*/
|
|
multicast = is_multicast_ether_addr(hdr->addr1)|is_broadcast_ether_addr(hdr->addr1);
|
|
unicast = !multicast;
|
|
if (unicast && (compare_ether_addr(dev->dev_addr, hdr->addr1) != 0)) {
|
|
if (ieee->bNetPromiscuousMode)
|
|
bToOtherSTA = true;
|
|
else
|
|
goto rx_dropped;
|
|
}
|
|
|
|
/*Filter pkt has too small length */
|
|
hdrlen = rtllib_rx_get_hdrlen(ieee, skb, rx_stats);
|
|
if (skb->len < hdrlen){
|
|
printk("%s():ERR!!! skb->len is smaller than hdrlen\n",__func__);
|
|
goto rx_dropped;
|
|
}
|
|
|
|
/* Filter Duplicate pkt */
|
|
ret = rtllib_rx_check_duplicate(ieee, skb, multicast);
|
|
if (ret < 0)
|
|
goto rx_dropped;
|
|
|
|
/* Filter CTRL Frame */
|
|
if (type == RTLLIB_FTYPE_CTL) {
|
|
goto rx_dropped;
|
|
}
|
|
|
|
/* Filter MGNT Frame */
|
|
if (type == RTLLIB_FTYPE_MGMT) {
|
|
if (bToOtherSTA)
|
|
goto rx_dropped;
|
|
if (rtllib_rx_frame_mgmt(ieee, skb, rx_stats, type, stype))
|
|
goto rx_dropped;
|
|
else
|
|
goto rx_exit;
|
|
}
|
|
|
|
/* Filter WAPI DATA Frame */
|
|
|
|
/* Update statstics for AP roaming */
|
|
if (!bToOtherSTA){
|
|
ieee->LinkDetectInfo.NumRecvDataInPeriod++;
|
|
ieee->LinkDetectInfo.NumRxOkInPeriod++;
|
|
}
|
|
dev->last_rx = jiffies;
|
|
|
|
/* Data frame - extract src/dst addresses */
|
|
rtllib_rx_extract_addr(ieee, hdr, dst, src, bssid);
|
|
|
|
/* Filter Data frames */
|
|
ret = rtllib_rx_data_filter(ieee, fc, dst, src, bssid, hdr->addr2);
|
|
if (ret < 0)
|
|
goto rx_dropped;
|
|
|
|
if (skb->len == hdrlen){
|
|
goto rx_dropped;
|
|
}
|
|
|
|
/* Send pspoll based on moredata */
|
|
if ((ieee->iw_mode == IW_MODE_INFRA) && (ieee->sta_sleep == LPS_IS_SLEEP)
|
|
&& (ieee->polling) && (!bToOtherSTA)) {
|
|
if (WLAN_FC_MORE_DATA(fc)) {
|
|
/* more data bit is set, let's request a new frame from the AP */
|
|
rtllib_sta_ps_send_pspoll_frame(ieee);
|
|
} else {
|
|
ieee->polling = false;
|
|
}
|
|
}
|
|
|
|
#if defined(RTL8192U) || defined(RTL8192SU) || defined(RTL8192SE)
|
|
if (ieee->iw_mode == IW_MODE_ADHOC){
|
|
psta = GetStaInfo(ieee, src);
|
|
if (NULL != psta)
|
|
psta->LastActiveTime = jiffies;
|
|
}
|
|
#endif
|
|
|
|
/* Get crypt if encrypted */
|
|
ret = rtllib_rx_get_crypt(ieee, skb, &crypt, hdrlen);
|
|
if (ret == -1)
|
|
goto rx_dropped;
|
|
|
|
/* Decrypt data frame (including reassemble) */
|
|
ret = rtllib_rx_decrypt(ieee, skb, rx_stats, crypt, hdrlen);
|
|
if (ret == -1)
|
|
goto rx_dropped;
|
|
else if (ret == -2)
|
|
goto rx_exit;
|
|
|
|
/* Get TS for Rx Reorder */
|
|
hdr = (struct rtllib_hdr_4addr *) skb->data;
|
|
if (ieee->current_network.qos_data.active && IsQoSDataFrame(skb->data)
|
|
&& !is_multicast_ether_addr(hdr->addr1) && !is_broadcast_ether_addr(hdr->addr1)
|
|
&& (!bToOtherSTA))
|
|
{
|
|
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;
|
|
}
|
|
}
|
|
|
|
/* Parse rx data frame (For AMSDU) */
|
|
/* skb: hdr + (possible reassembled) full plaintext payload */
|
|
payload = skb->data + hdrlen;
|
|
rxb = (struct rtllib_rxb*)kmalloc(sizeof(struct rtllib_rxb),GFP_ATOMIC);
|
|
if (rxb == NULL)
|
|
{
|
|
RTLLIB_DEBUG(RTLLIB_DL_ERR,"%s(): kmalloc rxb error\n",__func__);
|
|
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;
|
|
}
|
|
|
|
/* Update WAPI PN */
|
|
|
|
/* Check if leave LPS */
|
|
if (!bToOtherSTA){
|
|
if (ieee->bIsAggregateFrame)
|
|
nr_subframes = rxb->nr_subframes;
|
|
else
|
|
nr_subframes = 1;
|
|
if (unicast)
|
|
ieee->LinkDetectInfo.NumRxUnicastOkInPeriod += nr_subframes;
|
|
rtllib_rx_check_leave_lps(ieee, unicast, nr_subframes);
|
|
}
|
|
|
|
/* Indicate packets to upper layer or Rx Reorder */
|
|
if (ieee->pHTInfo->bCurRxReorderEnable == false ||pTS == NULL || bToOtherSTA){
|
|
rtllib_rx_indicate_pkt_legacy(ieee, rx_stats, rxb, dst, src);
|
|
}else{
|
|
#ifdef TCP_CSUM_OFFLOAD_RX
|
|
rxb->tcp_csum_valid = rx_stats->tcp_csum_valid;
|
|
#endif
|
|
RxReorderIndicatePacket(ieee, rxb, pTS, SeqNum);
|
|
}
|
|
|
|
dev_kfree_skb(skb);
|
|
|
|
rx_exit:
|
|
return 1;
|
|
|
|
rx_dropped:
|
|
if (rxb != NULL)
|
|
{
|
|
kfree(rxb);
|
|
rxb = NULL;
|
|
}
|
|
ieee->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;
|
|
}
|
|
|
|
int rtllib_rx_Master(struct rtllib_device *ieee, struct sk_buff *skb,
|
|
struct rtllib_rx_stats *rx_stats)
|
|
{
|
|
return 0;
|
|
}
|
|
int rtllib_rx_Monitor(struct rtllib_device *ieee, struct sk_buff *skb,
|
|
struct rtllib_rx_stats *rx_stats)
|
|
{
|
|
struct rtllib_hdr_4addr *hdr = (struct rtllib_hdr_4addr *)skb->data;
|
|
u16 fc = le16_to_cpu(hdr->frame_ctl);
|
|
size_t hdrlen = rtllib_get_hdrlen(fc);
|
|
|
|
if (skb->len < hdrlen){
|
|
printk("%s():ERR!!! skb->len is smaller than hdrlen\n", __func__);
|
|
return 0;
|
|
}
|
|
|
|
if (HTCCheck(ieee, skb->data)) {
|
|
if (net_ratelimit())
|
|
printk("%s: Find HTCControl!\n", __func__);
|
|
hdrlen += 4;
|
|
}
|
|
|
|
#if WIRELESS_EXT > 15
|
|
rtllib_monitor_rx(ieee, skb, rx_stats, hdrlen);
|
|
ieee->stats.rx_packets++;
|
|
ieee->stats.rx_bytes += skb->len;
|
|
#endif
|
|
return 1;
|
|
}
|
|
|
|
int rtllib_rx_Mesh(struct rtllib_device *ieee, struct sk_buff *skb,
|
|
struct rtllib_rx_stats *rx_stats)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#if 1
|
|
/* 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 rtllib_rx(struct rtllib_device *ieee, struct sk_buff *skb,
|
|
struct rtllib_rx_stats *rx_stats)
|
|
{
|
|
int ret = 0;
|
|
|
|
if ((NULL==ieee) || (NULL==skb) || (NULL==rx_stats)){
|
|
printk(KERN_INFO "%s: Input parameters NULL!\n", __func__);
|
|
goto rx_dropped;
|
|
}
|
|
if (skb->len < 10) {
|
|
printk(KERN_INFO "%s: SKB length < 10 \n", __func__);
|
|
goto rx_dropped;
|
|
}
|
|
|
|
switch (ieee->iw_mode) {
|
|
case IW_MODE_ADHOC:
|
|
case IW_MODE_INFRA:
|
|
ret = rtllib_rx_InfraAdhoc(ieee, skb, rx_stats);
|
|
break;
|
|
case IW_MODE_MASTER:
|
|
case IW_MODE_REPEAT:
|
|
ret = rtllib_rx_Master(ieee, skb, rx_stats);
|
|
break;
|
|
case IW_MODE_MONITOR:
|
|
ret = rtllib_rx_Monitor(ieee, skb, rx_stats);
|
|
break;
|
|
case IW_MODE_MESH:
|
|
ret = rtllib_rx_Mesh(ieee, skb, rx_stats);
|
|
break;
|
|
default:
|
|
printk(KERN_INFO"%s: ERR iw mode!!!\n", __func__);
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
|
|
rx_dropped:
|
|
ieee->stats.rx_dropped++;
|
|
return 0;
|
|
}
|
|
#else
|
|
int rtllib_rx(struct rtllib_device *ieee, struct sk_buff *skb,
|
|
struct rtllib_rx_stats *rx_stats)
|
|
{
|
|
struct net_device *dev = ieee->dev;
|
|
struct rtllib_hdr_4addr *hdr;
|
|
size_t hdrlen;
|
|
u16 fc, type, stype, sc;
|
|
struct net_device_stats *stats = NULL;
|
|
unsigned int frag;
|
|
u8 *payload;
|
|
u16 ethertype;
|
|
u8 TID = 0;
|
|
u16 SeqNum = 0;
|
|
PRX_TS_RECORD pTS = NULL;
|
|
#ifdef NOT_YET
|
|
struct net_device *wds = NULL;
|
|
struct sk_buff *skb2 = NULL;
|
|
struct net_device *wds = NULL;
|
|
int frame_authorized = 0;
|
|
int from_assoc_ap = 0;
|
|
void *sta = NULL;
|
|
#endif
|
|
u8 dst[ETH_ALEN];
|
|
u8 src[ETH_ALEN];
|
|
u8 bssid[ETH_ALEN] = {0};
|
|
u8 zero_addr[ETH_ALEN] = {0};
|
|
struct rtllib_crypt_data *crypt = NULL;
|
|
int keyidx = 0;
|
|
#if defined(RTL8192U) || defined(RTL8192SU) || defined(RTL8192SE)
|
|
struct sta_info * psta = NULL;
|
|
#endif
|
|
bool unicast_packet = false;
|
|
int i;
|
|
struct rtllib_rxb* rxb = NULL;
|
|
int multicast = 0;
|
|
bool tmp_dump = false;
|
|
bool bToOtherSTA = false;
|
|
hdr = (struct rtllib_hdr_4addr *)skb->data;
|
|
stats = &ieee->stats;
|
|
|
|
multicast = is_multicast_ether_addr(hdr->addr1)|is_broadcast_ether_addr(hdr->addr1);
|
|
if (!multicast && (compare_ether_addr(dev->dev_addr, hdr->addr1) != 0)) {
|
|
if ((ieee->iw_mode == IW_MODE_MONITOR) || ieee->bNetPromiscuousMode){
|
|
bToOtherSTA = true;
|
|
}else{
|
|
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);
|
|
|
|
ieee->need_sw_enc = 0;
|
|
|
|
hdrlen = rtllib_get_hdrlen(fc);
|
|
if (skb->len < hdrlen){
|
|
printk("%s():ERR!!! skb->len is smaller than hdrlen\n",__func__);
|
|
goto rx_dropped;
|
|
}
|
|
|
|
if (HTCCheck(ieee, skb->data)) {
|
|
if (net_ratelimit())
|
|
printk("find HTCControl\n");
|
|
hdrlen += 4;
|
|
rx_stats->bContainHTC = 1;
|
|
}
|
|
if (RTLLIB_QOS_HAS_SEQ(fc))
|
|
rx_stats->bIsQosData = 1;
|
|
if ((0) && (type == RTLLIB_FTYPE_DATA) && ((is_broadcast_ether_addr(hdr->addr1)) || (compare_ether_addr(dev->dev_addr, hdr->addr1) == 0))) {
|
|
printk("===>RX data before decrypt\n");
|
|
tmp_dump = true;
|
|
dump_buf(skb->data,skb->len);
|
|
}
|
|
#ifdef NOT_YET
|
|
hostap_update_rx_stats(local->ap, hdr, rx_stats);
|
|
#endif
|
|
|
|
if (ieee->host_decrypt) {
|
|
int idx = 0;
|
|
if (skb->len >= hdrlen + 3)
|
|
idx = skb->data[hdrlen + 3] >> 6;
|
|
crypt = ieee->crypt[idx];
|
|
#ifdef NOT_YET
|
|
sta = NULL;
|
|
|
|
/* Use station specific key to override default keys if the
|
|
* receiver address is a unicast address ("individual RA"). If
|
|
* bcrx_sta_key parameter is set, station specific key is used
|
|
* even with broad/multicast targets (this is against IEEE
|
|
* 802.11, but makes it easier to use different keys with
|
|
* stations that do not support WEP key mapping). */
|
|
|
|
if (!(hdr->addr1[0] & 0x01) || local->bcrx_sta_key)
|
|
(void) hostap_handle_sta_crypto(local, hdr, &crypt,
|
|
&sta);
|
|
#endif
|
|
|
|
/* allow NULL decrypt to indicate an station specific override
|
|
* for default encryption */
|
|
if (crypt && (crypt->ops == NULL ||
|
|
crypt->ops->decrypt_mpdu == NULL))
|
|
crypt = NULL;
|
|
|
|
if (!crypt && (fc & RTLLIB_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. */
|
|
RTLLIB_DEBUG_DROP("Decryption failed (not set)"
|
|
" (SA=" MAC_FMT ")\n",
|
|
MAC_ARG(hdr->addr2));
|
|
ieee->ieee_stats.rx_discards_undecryptable++;
|
|
goto rx_dropped;
|
|
}
|
|
}
|
|
|
|
if (skb->len < RTLLIB_DATA_HDR3_LEN)
|
|
goto rx_dropped;
|
|
|
|
if ( (ieee->pHTInfo->bCurRxReorderEnable == false) ||
|
|
!ieee->current_network.qos_data.active ||
|
|
!IsDataFrame(skb->data) ||
|
|
IsLegacyDataFrame(skb->data)) {
|
|
if (!((type == RTLLIB_FTYPE_MGMT) && (stype == RTLLIB_STYPE_BEACON))){
|
|
if (is_duplicate_packet(ieee, hdr)){
|
|
goto rx_dropped;
|
|
}
|
|
}
|
|
} else {
|
|
PRX_TS_RECORD pRxTS = NULL;
|
|
if (GetTs(ieee, (PTS_COMMON_INFO*) &pRxTS, hdr->addr2,
|
|
(u8)Frame_QoSTID((u8*)(skb->data)), RX_DIR, true)) {
|
|
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 {
|
|
RTLLIB_DEBUG(RTLLIB_DL_ERR, "ERR!!%s(): No TS!! Skip the check!!\n",__func__);
|
|
goto rx_dropped;
|
|
}
|
|
}
|
|
if (type == RTLLIB_FTYPE_MGMT) {
|
|
if (bToOtherSTA)
|
|
goto rx_dropped;
|
|
if (rtllib_rx_frame_mgmt(ieee, skb, rx_stats, type, stype))
|
|
goto rx_dropped;
|
|
else
|
|
goto rx_exit;
|
|
}
|
|
if (type == RTLLIB_FTYPE_CTL) {
|
|
goto rx_dropped;
|
|
}
|
|
/* Data frame - extract src/dst addresses */
|
|
switch (fc & (RTLLIB_FCTL_FROMDS | RTLLIB_FCTL_TODS)) {
|
|
case RTLLIB_FCTL_FROMDS:
|
|
memcpy(dst, hdr->addr1, ETH_ALEN);
|
|
memcpy(src, hdr->addr3, ETH_ALEN);
|
|
memcpy(bssid, hdr->addr2, ETH_ALEN);
|
|
break;
|
|
case RTLLIB_FCTL_TODS:
|
|
memcpy(dst, hdr->addr3, ETH_ALEN);
|
|
memcpy(src, hdr->addr2, ETH_ALEN);
|
|
memcpy(bssid, hdr->addr1, ETH_ALEN);
|
|
break;
|
|
case RTLLIB_FCTL_FROMDS | RTLLIB_FCTL_TODS:
|
|
if (skb->len < RTLLIB_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;
|
|
}
|
|
|
|
/* Filter frames from different BSS */
|
|
if ((type != RTLLIB_FTYPE_CTL) && ((fc & RTLLIB_FCTL_DSTODS) != RTLLIB_FCTL_DSTODS)
|
|
&& (compare_ether_addr(ieee->current_network.bssid, bssid) != 0) && memcmp(ieee->current_network.bssid, zero_addr, ETH_ALEN)) {
|
|
goto rx_dropped;
|
|
}
|
|
|
|
/* Filter packets sent by an STA that will be forwarded by AP */
|
|
if ( ieee->IntelPromiscuousModeInfo.bPromiscuousOn &&
|
|
ieee->IntelPromiscuousModeInfo.bFilterSourceStationFrame ) {
|
|
if ((fc & RTLLIB_FCTL_TODS) && !(fc & RTLLIB_FCTL_FROMDS) &&
|
|
(compare_ether_addr(dst, ieee->current_network.bssid) != 0) &&
|
|
(compare_ether_addr(bssid, ieee->current_network.bssid) == 0)) {
|
|
goto rx_dropped;
|
|
}
|
|
}
|
|
|
|
#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 & (RTLLIB_FCTL_TODS | RTLLIB_FCTL_FROMDS)) == RTLLIB_FCTL_FROMDS &&
|
|
ieee->stadev &&
|
|
memcmp(hdr->addr2, ieee->assoc_ap_addr, ETH_ALEN) == 0) {
|
|
/* Frame from BSSID of the AP for which we are a client */
|
|
skb->dev = dev = ieee->stadev;
|
|
stats = hostap_get_stats(dev);
|
|
from_assoc_ap = 1;
|
|
}
|
|
#endif
|
|
|
|
dev->last_rx = jiffies;
|
|
|
|
#ifdef NOT_YET
|
|
if ((ieee->iw_mode == IW_MODE_MASTER ||
|
|
ieee->iw_mode == IW_MODE_REPEAT) &&
|
|
!from_assoc_ap) {
|
|
switch (hostap_handle_sta_rx(ieee, dev, skb, rx_stats,
|
|
wds != NULL)) {
|
|
case AP_RX_CONTINUE_NOT_AUTHORIZED:
|
|
frame_authorized = 0;
|
|
break;
|
|
case AP_RX_CONTINUE:
|
|
frame_authorized = 1;
|
|
break;
|
|
case AP_RX_DROP:
|
|
goto rx_dropped;
|
|
case AP_RX_EXIT:
|
|
goto rx_exit;
|
|
}
|
|
}
|
|
#endif
|
|
/* Nullfunc frames may have PS-bit set, so they must be passed to
|
|
* hostap_handle_sta_rx() before being dropped here. */
|
|
if (stype != RTLLIB_STYPE_DATA &&
|
|
stype != RTLLIB_STYPE_DATA_CFACK &&
|
|
stype != RTLLIB_STYPE_DATA_CFPOLL &&
|
|
stype != RTLLIB_STYPE_DATA_CFACKPOLL&&
|
|
stype != RTLLIB_STYPE_QOS_DATA
|
|
) {
|
|
if (stype != RTLLIB_STYPE_NULLFUNC)
|
|
RTLLIB_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 (skb->len == hdrlen){
|
|
goto rx_dropped;
|
|
}
|
|
|
|
{
|
|
/* network filter more precisely */
|
|
switch (ieee->iw_mode) {
|
|
case IW_MODE_ADHOC:
|
|
/* packets from our adapter are dropped (echo) */
|
|
if (!memcmp(hdr->addr2, dev->dev_addr, ETH_ALEN))
|
|
goto rx_dropped;
|
|
|
|
/* {broad,multi}cast packets to our BSSID go through */
|
|
if (is_multicast_ether_addr(hdr->addr1)) {
|
|
if (!memcmp(hdr->addr3, ieee->current_network.bssid, ETH_ALEN))
|
|
break;
|
|
else
|
|
goto rx_dropped;
|
|
}
|
|
|
|
/* packets not to our adapter, just discard it */
|
|
if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN)) {
|
|
if (bToOtherSTA)
|
|
break;
|
|
else
|
|
goto rx_dropped;
|
|
}
|
|
|
|
break;
|
|
|
|
case IW_MODE_INFRA:
|
|
/* packets from our adapter are dropped (echo) */
|
|
if (!memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN))
|
|
goto rx_dropped;
|
|
|
|
/* {broad,multi}cast packets to our BSS go through */
|
|
if (is_multicast_ether_addr(hdr->addr1)) {
|
|
if (!memcmp(hdr->addr2, ieee->current_network.bssid, ETH_ALEN))
|
|
break;
|
|
else
|
|
goto rx_dropped;
|
|
}
|
|
|
|
/* packets to our adapter go through */
|
|
if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN)) {
|
|
if (bToOtherSTA)
|
|
break;
|
|
else
|
|
goto rx_dropped;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
|
|
}
|
|
|
|
if ((ieee->iw_mode == IW_MODE_INFRA) && (ieee->sta_sleep == LPS_IS_SLEEP)
|
|
&& (ieee->polling)) {
|
|
if (WLAN_FC_MORE_DATA(fc)) {
|
|
/* more data bit is set, let's request a new frame from the AP */
|
|
rtllib_sta_ps_send_pspoll_frame(ieee);
|
|
} else {
|
|
ieee->polling = false;
|
|
}
|
|
}
|
|
|
|
#if defined(RTL8192U) || defined(RTL8192SU) || defined(RTL8192SE)
|
|
if (ieee->iw_mode == IW_MODE_ADHOC){
|
|
psta = GetStaInfo(ieee, src);
|
|
if (NULL != psta)
|
|
psta->LastActiveTime = jiffies;
|
|
}
|
|
#endif
|
|
/* skb: hdr + (possibly fragmented, possibly encrypted) payload */
|
|
if ((!rx_stats->Decrypted)){
|
|
ieee->need_sw_enc = 1;
|
|
}
|
|
|
|
if (ieee->host_decrypt && (fc & RTLLIB_FCTL_WEP) &&
|
|
((keyidx = rtllib_rx_frame_decrypt(ieee, skb, crypt)) < 0)) {
|
|
printk("decrypt frame error\n");
|
|
goto rx_dropped;
|
|
}
|
|
if (tmp_dump) {
|
|
printk("************after decrypt\n");
|
|
dump_buf(skb->data,skb->len);
|
|
}
|
|
hdr = (struct rtllib_hdr_4addr *) skb->data;
|
|
|
|
/* skb: hdr + (possibly fragmented) plaintext payload */
|
|
if ((frag != 0 || (fc & RTLLIB_FCTL_MOREFRAGS))) {
|
|
int flen;
|
|
struct sk_buff *frag_skb = rtllib_frag_cache_get(ieee, hdr);
|
|
RTLLIB_DEBUG_FRAG("Rx Fragment received (%u)\n", frag);
|
|
|
|
if (!frag_skb) {
|
|
RTLLIB_DEBUG(RTLLIB_DL_RX | RTLLIB_DL_FRAG,
|
|
"Rx cannot get skb from fragment "
|
|
"cache (morefrag=%d seq=%u frag=%u)\n",
|
|
(fc & RTLLIB_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);
|
|
rtllib_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 & RTLLIB_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 rtllib_hdr_4addr *) skb->data;
|
|
rtllib_frag_cache_invalidate(ieee, hdr);
|
|
}
|
|
|
|
/* skb: hdr + (possible reassembled) full MSDU payload; possibly still
|
|
* encrypted/authenticated */
|
|
if (ieee->host_decrypt && (fc & RTLLIB_FCTL_WEP) &&
|
|
rtllib_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt)) {
|
|
printk("==>decrypt msdu error\n");
|
|
goto rx_dropped;
|
|
}
|
|
|
|
ieee->LinkDetectInfo.NumRecvDataInPeriod++;
|
|
ieee->LinkDetectInfo.NumRxOkInPeriod++;
|
|
|
|
hdr = (struct rtllib_hdr_4addr *) skb->data;
|
|
if ((!is_multicast_ether_addr(hdr->addr1)) && (!is_broadcast_ether_addr(hdr->addr1)))
|
|
unicast_packet = true;
|
|
if (crypt && !(fc & RTLLIB_FCTL_WEP) && !ieee->open_wep) {
|
|
if (/*ieee->ieee802_1x &&*/
|
|
rtllib_is_eapol_frame(ieee, skb, hdrlen)) {
|
|
|
|
#ifdef CONFIG_RTLLIB_DEBUG
|
|
/* pass unencrypted EAPOL frames even if encryption is
|
|
* configured */
|
|
struct eapol *eap = (struct eapol *)(skb->data +
|
|
24);
|
|
RTLLIB_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
|
|
eap_get_type(eap->type));
|
|
#endif
|
|
} else {
|
|
RTLLIB_DEBUG_DROP(
|
|
"encryption configured, but RX "
|
|
"frame not encrypted (SA=" MAC_FMT ")\n",
|
|
MAC_ARG(hdr->addr2));
|
|
goto rx_dropped;
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_RTLLIB_DEBUG
|
|
if (crypt && !(fc & RTLLIB_FCTL_WEP) &&
|
|
rtllib_is_eapol_frame(ieee, skb, hdrlen)) {
|
|
struct eapol *eap = (struct eapol *)(skb->data +
|
|
24);
|
|
RTLLIB_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
|
|
eap_get_type(eap->type));
|
|
}
|
|
#endif
|
|
|
|
if (crypt && !(fc & RTLLIB_FCTL_WEP) && !ieee->open_wep &&
|
|
!rtllib_is_eapol_frame(ieee, skb, hdrlen)) {
|
|
RTLLIB_DEBUG_DROP(
|
|
"dropped unencrypted RX data "
|
|
"frame from " MAC_FMT
|
|
" (drop_unencrypted=1)\n",
|
|
MAC_ARG(hdr->addr2));
|
|
goto rx_dropped;
|
|
}
|
|
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;
|
|
}
|
|
/* skb: hdr + (possible reassembled) full plaintext payload */
|
|
payload = skb->data + hdrlen;
|
|
rxb = (struct rtllib_rxb*)kmalloc(sizeof(struct rtllib_rxb),GFP_ATOMIC);
|
|
if (rxb == NULL) {
|
|
RTLLIB_DEBUG(RTLLIB_DL_ERR,"%s(): kmalloc rxb error\n",__func__);
|
|
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;
|
|
}
|
|
#if !defined(RTL8192SU) && !defined(RTL8192U)
|
|
if (unicast_packet) {
|
|
if (type == RTLLIB_FTYPE_DATA) {
|
|
if (ieee->bIsAggregateFrame)
|
|
ieee->LinkDetectInfo.NumRxUnicastOkInPeriod+=rxb->nr_subframes;
|
|
else
|
|
ieee->LinkDetectInfo.NumRxUnicastOkInPeriod++;
|
|
|
|
if ((ieee->state == RTLLIB_LINKED) /*&& !MgntInitAdapterInProgress(pMgntInfo)*/) {
|
|
if (((ieee->LinkDetectInfo.NumRxUnicastOkInPeriod +ieee->LinkDetectInfo.NumTxOkInPeriod) > 8 ) ||
|
|
(ieee->LinkDetectInfo.NumRxUnicastOkInPeriod > 2)) {
|
|
if (ieee->LeisurePSLeave)
|
|
ieee->LeisurePSLeave(dev);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
ieee->last_rx_ps_time = jiffies;
|
|
if (ieee->pHTInfo->bCurRxReorderEnable == false ||pTS == NULL || bToOtherSTA ){
|
|
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 */
|
|
memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
|
|
sub_skb->protocol = eth_type_trans(sub_skb, dev);
|
|
sub_skb->dev = dev;
|
|
sub_skb->dev->stats.rx_packets++;
|
|
sub_skb->dev->stats.rx_bytes += sub_skb->len;
|
|
#ifdef TCP_CSUM_OFFLOAD_RX
|
|
if ( rx_stats->tcp_csum_valid)
|
|
sub_skb->ip_summed = CHECKSUM_UNNECESSARY;
|
|
else
|
|
sub_skb->ip_summed = CHECKSUM_NONE;
|
|
#else
|
|
sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
|
|
#endif
|
|
|
|
netif_rx(sub_skb);
|
|
}
|
|
}
|
|
kfree(rxb);
|
|
rxb = NULL;
|
|
|
|
}
|
|
else
|
|
{
|
|
RTLLIB_DEBUG(RTLLIB_DL_REORDER,"%s(): REORDER ENABLE AND PTS not NULL, and we will enter RxReorderIndicatePacket()\n",__func__);
|
|
#ifdef TCP_CSUM_OFFLOAD_RX
|
|
rxb->tcp_csum_valid = rx_stats->tcp_csum_valid;
|
|
#endif
|
|
RxReorderIndicatePacket(ieee, rxb, pTS, SeqNum);
|
|
}
|
|
#ifndef JOHN_NOCPY
|
|
dev_kfree_skb(skb);
|
|
#endif
|
|
|
|
rx_exit:
|
|
#ifdef NOT_YET
|
|
if (sta)
|
|
hostap_handle_sta_release(sta);
|
|
#endif
|
|
return 1;
|
|
|
|
rx_dropped:
|
|
if (rxb != NULL)
|
|
{
|
|
kfree(rxb);
|
|
rxb = NULL;
|
|
}
|
|
stats->rx_dropped++;
|
|
|
|
/* Returning 0 indicates to caller that we have not handled the SKB--
|
|
* so it is still allocated and can be used again by underlying
|
|
* hardware as a DMA target */
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#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 rtllib_verify_qos_info(struct rtllib_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 rtllib_read_qos_param_element(struct rtllib_qos_parameter_info
|
|
*element_param, struct rtllib_info_element
|
|
*info_element)
|
|
{
|
|
int ret = 0;
|
|
u16 size = sizeof(struct rtllib_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 = rtllib_verify_qos_info(&element_param->info_element,
|
|
QOS_OUI_PARAM_SUB_TYPE);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Parse a QoS information element
|
|
*/
|
|
static int rtllib_read_qos_info_element(struct
|
|
rtllib_qos_information_element
|
|
*element_info, struct rtllib_info_element
|
|
*info_element)
|
|
{
|
|
int ret = 0;
|
|
u16 size = sizeof(struct rtllib_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 = rtllib_verify_qos_info(element_info,
|
|
QOS_OUI_INFO_SUB_TYPE);
|
|
return ret;
|
|
}
|
|
|
|
|
|
/*
|
|
* Write QoS parameters from the ac parameters.
|
|
*/
|
|
static int rtllib_qos_convert_ac_to_parameters(struct rtllib_qos_parameter_info *param_elm,
|
|
struct rtllib_qos_data *qos_data)
|
|
{
|
|
struct rtllib_qos_ac_parameter *ac_params;
|
|
struct rtllib_qos_parameters *qos_param = &(qos_data->parameters);
|
|
int rc = 0;
|
|
int i;
|
|
u8 aci;
|
|
u8 acm;
|
|
|
|
qos_data->wmm_acm = 0;
|
|
for (i = 0; i < QOS_QUEUE_NUM; i++) {
|
|
ac_params = &(param_elm->ac_params_record[i]);
|
|
|
|
aci = (ac_params->aci_aifsn & 0x60) >> 5;
|
|
acm = (ac_params->aci_aifsn & 0x10) >> 4;
|
|
|
|
if (aci >= QOS_QUEUE_NUM)
|
|
continue;
|
|
switch (aci) {
|
|
case 1:
|
|
/* BIT(0) | BIT(3) */
|
|
if (acm)
|
|
qos_data->wmm_acm |= (0x01<<0)|(0x01<<3);
|
|
break;
|
|
case 2:
|
|
/* BIT(4) | BIT(5) */
|
|
if (acm)
|
|
qos_data->wmm_acm |= (0x01<<4)|(0x01<<5);
|
|
break;
|
|
case 3:
|
|
/* BIT(6) | BIT(7) */
|
|
if (acm)
|
|
qos_data->wmm_acm |= (0x01<<6)|(0x01<<7);
|
|
break;
|
|
case 0:
|
|
default:
|
|
/* BIT(1) | BIT(2) */
|
|
if (acm)
|
|
qos_data->wmm_acm |= (0x01<<1)|(0x01<<2);
|
|
break;
|
|
}
|
|
|
|
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 rtllib_parse_qos_info_param_IE(struct rtllib_info_element
|
|
*info_element,
|
|
struct rtllib_network *network)
|
|
{
|
|
int rc = 0;
|
|
struct rtllib_qos_information_element qos_info_element;
|
|
|
|
rc = rtllib_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 rtllib_qos_parameter_info param_element;
|
|
|
|
rc = rtllib_read_qos_param_element(¶m_element,
|
|
info_element);
|
|
if (rc == 0) {
|
|
rtllib_qos_convert_ac_to_parameters(¶m_element,
|
|
&(network->qos_data));
|
|
network->flags |= NETWORK_HAS_QOS_PARAMETERS;
|
|
network->qos_data.param_count =
|
|
param_element.info_element.ac_info & 0x0F;
|
|
}
|
|
}
|
|
|
|
if (rc == 0) {
|
|
RTLLIB_DEBUG_QOS("QoS is supported\n");
|
|
network->qos_data.supported = 1;
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
#ifdef CONFIG_RTLLIB_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(RSN);
|
|
MFIE_STRING(RATES_EX);
|
|
MFIE_STRING(GENERIC);
|
|
MFIE_STRING(QOS_PARAMETER);
|
|
default:
|
|
return "UNKNOWN";
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#ifdef ENABLE_DOT11D
|
|
static inline void rtllib_extract_country_ie(
|
|
struct rtllib_device *ieee,
|
|
struct rtllib_info_element *info_element,
|
|
struct rtllib_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))
|
|
{
|
|
if ((rtllib_act_scanning(ieee,false) == true) && (ieee->FirstIe_InScan == 1))
|
|
printk("Received beacon ContryIE, SSID: <%s>\n",network->ssid);
|
|
Dot11d_UpdateCountryIe(ieee, addr2, info_element->len, info_element->data);
|
|
}
|
|
}
|
|
|
|
if (IS_EQUAL_CIE_SRC(ieee, addr2)) {
|
|
UPDATE_CIE_WATCHDOG(ieee);
|
|
}
|
|
}
|
|
|
|
}
|
|
#endif
|
|
|
|
int rtllib_parse_info_param(struct rtllib_device *ieee,
|
|
struct rtllib_info_element *info_element,
|
|
u16 length,
|
|
struct rtllib_network *network,
|
|
struct rtllib_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];
|
|
#ifdef CONFIG_RTLLIB_DEBUG
|
|
char rates_str[64];
|
|
char *p;
|
|
#endif
|
|
while (length >= sizeof(*info_element)) {
|
|
if (sizeof(*info_element) + info_element->len > length) {
|
|
RTLLIB_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 (rtllib_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);
|
|
|
|
RTLLIB_DEBUG_MGMT("MFIE_TYPE_SSID: '%s' len=%d.\n",
|
|
network->ssid, network->ssid_len);
|
|
break;
|
|
|
|
case MFIE_TYPE_RATES:
|
|
#ifdef CONFIG_RTLLIB_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_RTLLIB_DEBUG
|
|
p += snprintf(p, sizeof(rates_str) -
|
|
(p - rates_str), "%02X ",
|
|
network->rates[i]);
|
|
#endif
|
|
if (rtllib_is_ofdm_rate
|
|
(info_element->data[i])) {
|
|
network->flags |= NETWORK_HAS_OFDM;
|
|
if (info_element->data[i] &
|
|
RTLLIB_BASIC_RATE_MASK)
|
|
network->flags &=
|
|
~NETWORK_HAS_CCK;
|
|
}
|
|
|
|
if (rtllib_is_cck_rate
|
|
(info_element->data[i])) {
|
|
network->flags |= NETWORK_HAS_CCK;
|
|
}
|
|
}
|
|
|
|
RTLLIB_DEBUG_MGMT("MFIE_TYPE_RATES: '%s' (%d)\n",
|
|
rates_str, network->rates_len);
|
|
break;
|
|
|
|
case MFIE_TYPE_RATES_EX:
|
|
#ifdef CONFIG_RTLLIB_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_RTLLIB_DEBUG
|
|
p += snprintf(p, sizeof(rates_str) -
|
|
(p - rates_str), "%02X ",
|
|
network->rates[i]);
|
|
#endif
|
|
if (rtllib_is_ofdm_rate
|
|
(info_element->data[i])) {
|
|
network->flags |= NETWORK_HAS_OFDM;
|
|
if (info_element->data[i] &
|
|
RTLLIB_BASIC_RATE_MASK)
|
|
network->flags &=
|
|
~NETWORK_HAS_CCK;
|
|
}
|
|
}
|
|
|
|
RTLLIB_DEBUG_MGMT("MFIE_TYPE_RATES_EX: '%s' (%d)\n",
|
|
rates_str, network->rates_ex_len);
|
|
break;
|
|
|
|
case MFIE_TYPE_DS_SET:
|
|
RTLLIB_DEBUG_MGMT("MFIE_TYPE_DS_SET: %d\n",
|
|
info_element->data[0]);
|
|
network->channel = info_element->data[0];
|
|
break;
|
|
|
|
case MFIE_TYPE_FH_SET:
|
|
RTLLIB_DEBUG_MGMT("MFIE_TYPE_FH_SET: ignored\n");
|
|
break;
|
|
|
|
case MFIE_TYPE_CF_SET:
|
|
RTLLIB_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 != RTLLIB_LINKED)
|
|
break;
|
|
network->last_dtim_sta_time[0] = jiffies;
|
|
network->last_dtim_sta_time[1] = stats->mac_time[1];
|
|
|
|
network->dtim_data = RTLLIB_DTIM_VALID;
|
|
|
|
|
|
if (info_element->data[2] & 1)
|
|
network->dtim_data |= RTLLIB_DTIM_MBCAST;
|
|
|
|
#if 1
|
|
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;
|
|
if (info_element->data[3+offset] & (1<<(ieee->assoc_id%8)))
|
|
network->dtim_data |= RTLLIB_DTIM_UCAST;
|
|
#else
|
|
{
|
|
u16 numSta = 0;
|
|
u16 offset_byte = 0;
|
|
u16 offset_bit = 0;
|
|
|
|
numSta = (info_element->data[2] &0xFE)*8;
|
|
|
|
if (ieee->assoc_id < numSta ||
|
|
ieee->assoc_id > (numSta + (info_element->len -3)*8))
|
|
break;
|
|
|
|
offset = ieee->assoc_id - numSta;
|
|
offset_byte = offset / 8;
|
|
offset_bit = offset % 8;
|
|
if (info_element->data[3+offset_byte] & (0x01<<offset_bit))
|
|
network->dtim_data |= RTLLIB_DTIM_UCAST;
|
|
}
|
|
#endif
|
|
|
|
network->listen_interval = network->dtim_period;
|
|
break;
|
|
|
|
case MFIE_TYPE_ERP:
|
|
network->erp_value = info_element->data[0];
|
|
network->flags |= NETWORK_HAS_ERP_VALUE;
|
|
RTLLIB_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n",
|
|
network->erp_value);
|
|
break;
|
|
case MFIE_TYPE_IBSS_SET:
|
|
network->atim_window = info_element->data[0];
|
|
RTLLIB_DEBUG_MGMT("MFIE_TYPE_IBSS_SET: %d\n",
|
|
network->atim_window);
|
|
break;
|
|
|
|
case MFIE_TYPE_CHALLENGE:
|
|
RTLLIB_DEBUG_MGMT("MFIE_TYPE_CHALLENGE: ignored\n");
|
|
break;
|
|
|
|
case MFIE_TYPE_GENERIC:
|
|
RTLLIB_DEBUG_MGMT("MFIE_TYPE_GENERIC: %d bytes\n",
|
|
info_element->len);
|
|
if (!rtllib_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;
|
|
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
if (ht_realtek_agg_len >= 5){
|
|
if ((ht_realtek_agg_buf[5] & RT_HT_CAP_USE_SOFTAP))
|
|
network->bssht.RT2RT_HT_Mode |= RT_HT_CAP_USE_SOFTAP;
|
|
}
|
|
}
|
|
|
|
{
|
|
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;
|
|
}
|
|
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))
|
|
{
|
|
network->atheros_cap_exist = true;
|
|
}
|
|
|
|
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;
|
|
}
|
|
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;
|
|
}
|
|
|
|
|
|
if (info_element->len >= 3 &&
|
|
info_element->data[0] == 0x00 &&
|
|
info_element->data[1] == 0x0a &&
|
|
info_element->data[2] == 0xf5)
|
|
{
|
|
network->airgo_cap_exist = true;
|
|
}
|
|
|
|
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;
|
|
network->MBssidMask = network->CcxRmState[1] & 0x07;
|
|
if (network->MBssidMask != 0)
|
|
{
|
|
network->bMBssidValid = true;
|
|
network->MBssidMask = 0xff << (network->MBssidMask);
|
|
memcpy(network->MBssid, network->bssid, ETH_ALEN);
|
|
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;
|
|
}
|
|
}
|
|
if (info_element->len > 4 &&
|
|
info_element->data[0] == 0x00 &&
|
|
info_element->data[1] == 0x50 &&
|
|
info_element->data[2] == 0xf2 &&
|
|
info_element->data[3] == 0x04)
|
|
{
|
|
RTLLIB_DEBUG_MGMT("MFIE_TYPE_WZC: %d bytes\n",
|
|
info_element->len);
|
|
network->wzc_ie_len = min(info_element->len+2,
|
|
MAX_WZC_IE_LEN);
|
|
memcpy(network->wzc_ie, info_element,
|
|
network->wzc_ie_len);
|
|
}
|
|
break;
|
|
|
|
case MFIE_TYPE_RSN:
|
|
RTLLIB_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;
|
|
|
|
case MFIE_TYPE_HT_CAP:
|
|
RTLLIB_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);
|
|
|
|
network->bssht.bdSupportHT = true;
|
|
network->bssht.bdHT1R = ((((PHT_CAPABILITY_ELE)(network->bssht.bdHTCapBuf))->MCS[1]) == 0);
|
|
|
|
network->bssht.bdBandWidth = (HT_CHANNEL_WIDTH)(((PHT_CAPABILITY_ELE)(network->bssht.bdHTCapBuf))->ChlWidth);
|
|
}
|
|
else{
|
|
network->bssht.bdSupportHT = false;
|
|
network->bssht.bdHT1R = false;
|
|
network->bssht.bdBandWidth = HT_CHANNEL_WIDTH_20 ;
|
|
}
|
|
break;
|
|
|
|
|
|
case MFIE_TYPE_HT_INFO:
|
|
RTLLIB_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:
|
|
RTLLIB_DEBUG_SCAN("MFIE_TYPE_AIRONET: %d bytes\n",
|
|
info_element->len);
|
|
if (info_element->len >IE_CISCO_FLAG_POSITION)
|
|
{
|
|
network->bWithAironetIE = true;
|
|
|
|
if ( (info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_MIC) ||
|
|
(info_element->data[IE_CISCO_FLAG_POSITION]&SUPPORT_CKIP_PK) )
|
|
{
|
|
network->bCkipSupported = true;
|
|
}
|
|
else
|
|
{
|
|
network->bCkipSupported = false;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
network->bWithAironetIE = false;
|
|
network->bCkipSupported = false;
|
|
}
|
|
break;
|
|
case MFIE_TYPE_QOS_PARAMETER:
|
|
printk(KERN_ERR
|
|
"QoS Error need to parse QOS_PARAMETER IE\n");
|
|
break;
|
|
|
|
#ifdef ENABLE_DOT11D
|
|
case MFIE_TYPE_COUNTRY:
|
|
RTLLIB_DEBUG_SCAN("MFIE_TYPE_COUNTRY: %d bytes\n",
|
|
info_element->len);
|
|
rtllib_extract_country_ie(ieee, info_element, network, network->bssid);
|
|
break;
|
|
#endif
|
|
/* TODO */
|
|
default:
|
|
RTLLIB_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 rtllib_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 rtllib_SignalStrengthTranslate(
|
|
u8 CurrSS
|
|
)
|
|
{
|
|
u8 RetSS;
|
|
|
|
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;
|
|
}
|
|
|
|
|
|
|
|
return RetSS;
|
|
}
|
|
|
|
long rtllib_translate_todbm(u8 signal_strength_index )
|
|
{
|
|
long signal_power;
|
|
|
|
signal_power = (long)((signal_strength_index + 1) >> 1);
|
|
signal_power -= 95;
|
|
|
|
return signal_power;
|
|
}
|
|
|
|
static inline int rtllib_network_init(
|
|
struct rtllib_device *ieee,
|
|
struct rtllib_probe_response *beacon,
|
|
struct rtllib_network *network,
|
|
struct rtllib_rx_stats *stats)
|
|
{
|
|
#ifdef CONFIG_RTLLIB_DEBUG
|
|
#endif
|
|
|
|
/*
|
|
network->qos_data.active = 0;
|
|
network->qos_data.supported = 0;
|
|
network->qos_data.param_count = 0;
|
|
network->qos_data.old_param_count = 0;
|
|
*/
|
|
memset(&network->qos_data, 0, sizeof(struct rtllib_qos_data));
|
|
|
|
/* 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->hidden_ssid_len = 0;
|
|
memset(network->hidden_ssid, 0, sizeof(network->hidden_ssid));
|
|
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->airgo_cap_exist = false;
|
|
network->Turbo_Enable = 0;
|
|
network->SignalStrength = stats->SignalStrength;
|
|
network->RSSI = stats->SignalStrength;
|
|
#ifdef ENABLE_DOT11D
|
|
network->CountryIeLen = 0;
|
|
memset(network->CountryIeBuf, 0, MAX_IE_LEN);
|
|
#endif
|
|
HTInitializeBssDesc(&network->bssht);
|
|
if (stats->freq == RTLLIB_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;
|
|
network->wzc_ie_len = 0;
|
|
|
|
if (rtllib_parse_info_param(ieee,
|
|
beacon->info_element,
|
|
(stats->len - sizeof(*beacon)),
|
|
network,
|
|
stats))
|
|
return 1;
|
|
|
|
network->mode = 0;
|
|
if (stats->freq == RTLLIB_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) {
|
|
RTLLIB_DEBUG_SCAN("Filtered out '%s (" MAC_FMT ")' "
|
|
"network.\n",
|
|
escape_essid(network->ssid,
|
|
network->ssid_len),
|
|
MAC_ARG(network->bssid));
|
|
return 1;
|
|
}
|
|
|
|
if (network->bssht.bdSupportHT){
|
|
if (network->mode == IEEE_A)
|
|
network->mode = IEEE_N_5G;
|
|
else if (network->mode & (IEEE_G | IEEE_B))
|
|
network->mode = IEEE_N_24G;
|
|
}
|
|
if (rtllib_is_empty_essid(network->ssid, network->ssid_len))
|
|
network->flags |= NETWORK_EMPTY_ESSID;
|
|
stats->signal = 30 + (stats->SignalStrength * 70) / 100;
|
|
stats->noise = rtllib_translate_todbm((u8)(100-stats->signal)) -25;
|
|
|
|
memcpy(&network->stats, stats, sizeof(network->stats));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline int is_same_network(struct rtllib_network *src,
|
|
struct rtllib_network *dst, u8 ssidbroad)
|
|
{
|
|
/* 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) || (!ssidbroad)) &&
|
|
(src->channel == dst->channel) &&
|
|
!memcmp(src->bssid, dst->bssid, ETH_ALEN) &&
|
|
(!memcmp(src->ssid, dst->ssid, src->ssid_len) || (!ssidbroad)) &&
|
|
((src->capability & WLAN_CAPABILITY_IBSS) ==
|
|
(dst->capability & WLAN_CAPABILITY_IBSS)) &&
|
|
((src->capability & WLAN_CAPABILITY_ESS) ==
|
|
(dst->capability & WLAN_CAPABILITY_ESS)));
|
|
}
|
|
|
|
static inline void update_ibss_network(struct rtllib_network *dst,
|
|
struct rtllib_network *src)
|
|
{
|
|
memcpy(&dst->stats, &src->stats, sizeof(struct rtllib_rx_stats));
|
|
dst->last_scanned = jiffies;
|
|
}
|
|
|
|
|
|
static inline void update_network(struct rtllib_network *dst,
|
|
struct rtllib_network *src)
|
|
{
|
|
int qos_active;
|
|
u8 old_param;
|
|
|
|
memcpy(&dst->stats, &src->stats, sizeof(struct rtllib_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)
|
|
{
|
|
if (dst->ssid_len == 0)
|
|
{
|
|
memset(dst->hidden_ssid, 0, sizeof(dst->hidden_ssid));
|
|
dst->hidden_ssid_len = src->ssid_len;
|
|
memcpy(dst->hidden_ssid, src->ssid, src->ssid_len);
|
|
}else{
|
|
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 rtllib_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->airgo_cap_exist = src->airgo_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;
|
|
memcpy(dst->wzc_ie, src->wzc_ie, src->wzc_ie_len);
|
|
dst->wzc_ie_len = src->wzc_ie_len;
|
|
|
|
dst->last_scanned = jiffies;
|
|
/* qos related parameters */
|
|
qos_active = dst->qos_data.active;
|
|
old_param = dst->qos_data.param_count;
|
|
dst->qos_data.supported = src->qos_data.supported;
|
|
if (dst->flags & NETWORK_HAS_QOS_PARAMETERS)
|
|
memcpy(&dst->qos_data, &src->qos_data, sizeof(struct rtllib_qos_data));
|
|
if (dst->qos_data.supported == 1) {
|
|
if (dst->ssid_len)
|
|
RTLLIB_DEBUG_QOS
|
|
("QoS the network %s is QoS supported\n",
|
|
dst->ssid);
|
|
else
|
|
RTLLIB_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;
|
|
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->SignalStrength = src->SignalStrength;
|
|
dst->RSSI = src->RSSI;
|
|
dst->Turbo_Enable = src->Turbo_Enable;
|
|
|
|
#ifdef ENABLE_DOT11D
|
|
dst->CountryIeLen = src->CountryIeLen;
|
|
memcpy(dst->CountryIeBuf, src->CountryIeBuf, src->CountryIeLen);
|
|
#endif
|
|
|
|
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)) == RTLLIB_STYPE_BEACON);
|
|
}
|
|
|
|
#if defined(RTL8192U) || defined(RTL8192SU) || defined(RTL8192SE)
|
|
u8 AsocEntry_ComputeSum(u8 *paddr)
|
|
{
|
|
u32 sum;
|
|
|
|
sum = paddr[0]+
|
|
paddr[1]+
|
|
paddr[2]+
|
|
paddr[3]+
|
|
paddr[4]+
|
|
paddr[5];
|
|
|
|
return (u8)(sum % PEER_MAX_ASSOC);
|
|
}
|
|
u8 AsocEntry_AssignAvailableAID(struct rtllib_device *ieee, u8 *paddr)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < PEER_MAX_ASSOC; i++)
|
|
{
|
|
if (ieee->AvailableAIDTable[i] == 99)
|
|
{
|
|
ieee->AvailableAIDTable[i] = AsocEntry_ComputeSum(paddr);
|
|
return i+1;
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
void InitStaInfo(struct rtllib_device *ieee,int index)
|
|
{
|
|
int idx = index;
|
|
ieee->peer_assoc_list[idx]->StaDataRate = 0;
|
|
ieee->peer_assoc_list[idx]->StaSS = 0;
|
|
ieee->peer_assoc_list[idx]->RetryFrameCnt = 0;
|
|
ieee->peer_assoc_list[idx]->NoRetryFrameCnt = 0;
|
|
ieee->peer_assoc_list[idx]->LastRetryCnt = 0;
|
|
ieee->peer_assoc_list[idx]->LastNoRetryCnt = 0;
|
|
ieee->peer_assoc_list[idx]->AvgRetryRate = 0;
|
|
ieee->peer_assoc_list[idx]->LastRetryRate = 0;
|
|
ieee->peer_assoc_list[idx]->txRateIndex = 11;
|
|
ieee->peer_assoc_list[idx]->APDataRate = 0x2;
|
|
ieee->peer_assoc_list[idx]->ForcedDataRate = 0x2;
|
|
|
|
}
|
|
static u8 IsStaInfoExist(struct rtllib_device *ieee, u8 *addr)
|
|
{
|
|
int k=0;
|
|
struct sta_info * psta = NULL;
|
|
u8 sta_idx = PEER_MAX_ASSOC;
|
|
|
|
for (k=0; k<PEER_MAX_ASSOC; k++)
|
|
{
|
|
psta = ieee->peer_assoc_list[k];
|
|
if (NULL != psta)
|
|
{
|
|
if (memcmp(addr, psta->macaddr, ETH_ALEN) == 0)
|
|
{
|
|
sta_idx = k;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return sta_idx;
|
|
}
|
|
static u8 GetFreeStaInfoIdx(struct rtllib_device *ieee, u8 *addr)
|
|
{
|
|
int k = 0;
|
|
while((ieee->peer_assoc_list[k] != NULL) && (k < PEER_MAX_ASSOC))
|
|
k++;
|
|
printk("%s: addr:"MAC_FMT" index: %d\n", __func__, MAC_ARG(addr), k);
|
|
return k;
|
|
}
|
|
struct sta_info *GetStaInfo(struct rtllib_device *ieee, u8 *addr)
|
|
{
|
|
int k=0;
|
|
struct sta_info * psta = NULL;
|
|
struct sta_info * psta_find = NULL;
|
|
|
|
for (k=0; k<PEER_MAX_ASSOC; k++)
|
|
{
|
|
psta = ieee->peer_assoc_list[k];
|
|
if (NULL != psta)
|
|
{
|
|
if (memcmp(addr, psta->macaddr, ETH_ALEN) == 0)
|
|
{
|
|
psta_find = psta;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return psta_find;
|
|
}
|
|
void DelStaInfoList(struct rtllib_device *ieee)
|
|
{
|
|
int idx = 0;
|
|
struct sta_info * AsocEntry = NULL;
|
|
|
|
atomic_set(&ieee->AsocEntryNum, 0);
|
|
for (idx=0; idx<PEER_MAX_ASSOC; idx++){
|
|
AsocEntry = ieee->peer_assoc_list[idx];
|
|
if (NULL != AsocEntry){
|
|
kfree(AsocEntry);
|
|
ieee->peer_assoc_list[idx] = NULL;
|
|
}
|
|
ieee->AvailableAIDTable[idx] = 99;
|
|
}
|
|
}
|
|
void DelStaInfo(struct rtllib_device *ieee, u8 *addr)
|
|
{
|
|
struct sta_info * psta = NULL;
|
|
int k=0;
|
|
|
|
for (k=0; k<PEER_MAX_ASSOC; k++)
|
|
{
|
|
psta = ieee->peer_assoc_list[k];
|
|
if (NULL != psta){
|
|
if (memcmp(addr, psta->macaddr, ETH_ALEN) == 0){
|
|
if (psta->aid > 0 && psta->aid-1 < PEER_MAX_ASSOC)
|
|
ieee->AvailableAIDTable[psta->aid-1] = 99;
|
|
else
|
|
printk("%s(): clear non-existing entry AID\n", __func__);
|
|
|
|
kfree(psta);
|
|
ieee->peer_assoc_list[k] = NULL;
|
|
atomic_dec(&ieee->AsocEntryNum);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
void IbssAgeFunction(struct rtllib_device *ieee)
|
|
{
|
|
struct sta_info* AsocEntry = NULL;
|
|
int idx;
|
|
unsigned long CurrentTime;
|
|
signed long TimeDifference;
|
|
struct rtllib_network *target;
|
|
|
|
CurrentTime = jiffies;
|
|
|
|
for (idx = 0; idx < PEER_MAX_ASSOC; idx++)
|
|
{
|
|
AsocEntry = ieee->peer_assoc_list[idx];
|
|
if (AsocEntry)
|
|
{
|
|
TimeDifference = jiffies_to_msecs(CurrentTime - AsocEntry->LastActiveTime);
|
|
|
|
if (TimeDifference > 20000)
|
|
{
|
|
printk("IbssAgeFunction(): "MAC_FMT" timeout\n", MAC_ARG(AsocEntry->macaddr));
|
|
kfree(AsocEntry);
|
|
ieee->peer_assoc_list[idx] = NULL;
|
|
atomic_dec(&ieee->AsocEntryNum);
|
|
|
|
if (atomic_read(&ieee->AsocEntryNum) == 0){
|
|
|
|
down(&ieee->wx_sem);
|
|
rtllib_stop_protocol(ieee,true);
|
|
|
|
list_for_each_entry(target, &ieee->network_list, list) {
|
|
if (is_same_network(target, &ieee->current_network,(target->ssid_len?1:0))){
|
|
printk("delete sta of previous Ad-hoc\n");
|
|
list_del(&target->list);
|
|
break;
|
|
}
|
|
}
|
|
|
|
rtllib_start_protocol(ieee);
|
|
up(&ieee->wx_sem);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef TO_DO_LIST
|
|
if (AsocEntry_AnyStationAssociated(pMgntInfo)==false)
|
|
DrvIFIndicateDisassociation(Adapter, unspec_reason);
|
|
|
|
if (pMgntInfo->dot11CurrentWirelessMode == WIRELESS_MODE_G ||
|
|
(IS_WIRELESS_MODE_N_24G(Adapter) && pMgntInfo->pHTInfo->bCurSuppCCK) )
|
|
{
|
|
if (nBModeStaCnt == 0)
|
|
{
|
|
pMgntInfo->bUseProtection = false;
|
|
ActUpdate_mCapInfo(Adapter, pMgntInfo->mCap);
|
|
}
|
|
}
|
|
|
|
if (IS_WIRELESS_MODE_N_24G(Adapter) || IS_WIRELESS_MODE_N_5G(Adapter) )
|
|
{
|
|
if (nLegacyStaCnt > 0)
|
|
{
|
|
pMgntInfo->pHTInfo->CurrentOpMode = HT_OPMODE_MIXED;
|
|
}
|
|
else
|
|
{
|
|
if ((pMgntInfo->pHTInfo->bCurBW40MHz) && (n20MHzStaCnt > 0))
|
|
pMgntInfo->pHTInfo->CurrentOpMode = HT_OPMODE_40MHZ_PROTECT;
|
|
else
|
|
pMgntInfo->pHTInfo->CurrentOpMode = HT_OPMODE_NO_PROTECT;
|
|
|
|
}
|
|
}
|
|
|
|
if (IS_WIRELESS_MODE_G(Adapter) ||
|
|
(IS_WIRELESS_MODE_N_24G(Adapter) && pMgntInfo->pHTInfo->bCurSuppCCK))
|
|
{
|
|
if (pMgntInfo->bUseProtection)
|
|
{
|
|
u8 CckRate[4] = { MGN_1M, MGN_2M, MGN_5_5M, MGN_11M };
|
|
OCTET_STRING osCckRate;
|
|
FillOctetString(osCckRate, CckRate, 4);
|
|
FilterSupportRate(pMgntInfo->mBrates, &osCckRate, false);
|
|
Adapter->HalFunc.SetHwRegHandler(Adapter, HW_VAR_BASIC_RATE, (pu1Byte)&osCckRate);
|
|
}
|
|
else
|
|
{
|
|
Adapter->HalFunc.SetHwRegHandler( Adapter, HW_VAR_BASIC_RATE, (pu1Byte)(&pMgntInfo->mBrates) );
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
static int IsPassiveChannel( struct rtllib_device *rtllib, u8 channel)
|
|
{
|
|
if (MAX_CHANNEL_NUMBER < channel) {
|
|
printk("%s(): Invalid Channel\n", __func__);
|
|
return 0;
|
|
}
|
|
|
|
if (rtllib->active_channel_map[channel] == 2)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int IsLegalChannel( struct rtllib_device *rtllib, u8 channel)
|
|
{
|
|
if (MAX_CHANNEL_NUMBER < channel) {
|
|
printk("%s(): Invalid Channel\n", __func__);
|
|
return 0;
|
|
}
|
|
if (rtllib->active_channel_map[channel] > 0)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static inline void rtllib_process_probe_response(
|
|
struct rtllib_device *ieee,
|
|
struct rtllib_probe_response *beacon,
|
|
struct rtllib_rx_stats *stats)
|
|
{
|
|
struct rtllib_network *target;
|
|
struct rtllib_network *oldest = NULL;
|
|
#ifdef CONFIG_RTLLIB_DEBUG
|
|
struct rtllib_info_element *info_element = &beacon->info_element[0];
|
|
#endif
|
|
unsigned long flags;
|
|
short renew;
|
|
struct rtllib_network *network = kzalloc(sizeof(struct rtllib_network), GFP_ATOMIC);
|
|
|
|
if (!network)
|
|
return;
|
|
|
|
RTLLIB_DEBUG_SCAN(
|
|
"'%s' (" MAC_FMT "): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n",
|
|
escape_essid(info_element->data, info_element->len),
|
|
MAC_ARG(beacon->header.addr3),
|
|
(beacon->capability & (1<<0xf)) ? '1' : '0',
|
|
(beacon->capability & (1<<0xe)) ? '1' : '0',
|
|
(beacon->capability & (1<<0xd)) ? '1' : '0',
|
|
(beacon->capability & (1<<0xc)) ? '1' : '0',
|
|
(beacon->capability & (1<<0xb)) ? '1' : '0',
|
|
(beacon->capability & (1<<0xa)) ? '1' : '0',
|
|
(beacon->capability & (1<<0x9)) ? '1' : '0',
|
|
(beacon->capability & (1<<0x8)) ? '1' : '0',
|
|
(beacon->capability & (1<<0x7)) ? '1' : '0',
|
|
(beacon->capability & (1<<0x6)) ? '1' : '0',
|
|
(beacon->capability & (1<<0x5)) ? '1' : '0',
|
|
(beacon->capability & (1<<0x4)) ? '1' : '0',
|
|
(beacon->capability & (1<<0x3)) ? '1' : '0',
|
|
(beacon->capability & (1<<0x2)) ? '1' : '0',
|
|
(beacon->capability & (1<<0x1)) ? '1' : '0',
|
|
(beacon->capability & (1<<0x0)) ? '1' : '0');
|
|
|
|
if (rtllib_network_init(ieee, beacon, network, stats)) {
|
|
RTLLIB_DEBUG_SCAN("Dropped '%s' (" MAC_FMT ") via %s.\n",
|
|
escape_essid(info_element->data,
|
|
info_element->len),
|
|
MAC_ARG(beacon->header.addr3),
|
|
WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
|
|
RTLLIB_STYPE_PROBE_RESP ?
|
|
"PROBE RESPONSE" : "BEACON");
|
|
goto free_network;
|
|
}
|
|
|
|
|
|
if (!IsLegalChannel(ieee, network->channel))
|
|
goto free_network;
|
|
|
|
if (WLAN_FC_GET_STYPE(beacon->header.frame_ctl) == RTLLIB_STYPE_PROBE_RESP) {
|
|
if (IsPassiveChannel(ieee, network->channel)) {
|
|
printk("GetScanInfo(): For Global Domain, "
|
|
"filter probe response at channel(%d).\n", network->channel);
|
|
goto free_network;
|
|
}
|
|
}
|
|
|
|
/* 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 defined(RTL8192U) || defined(RTL8192SU) || defined(RTL8192SE)
|
|
if (is_beacon(beacon->header.frame_ctl)){
|
|
if ((ieee->iw_mode == IW_MODE_ADHOC) && (ieee->state == RTLLIB_LINKED))
|
|
{
|
|
if ((network->ssid_len == ieee->current_network.ssid_len)
|
|
&& (!memcmp(network->ssid,ieee->current_network.ssid,ieee->current_network.ssid_len))
|
|
&& (network->channel == ieee->current_network.channel)
|
|
&& (ieee->current_network.channel > 0)
|
|
&& (ieee->current_network.channel <= 14))
|
|
{
|
|
if (!memcmp(ieee->current_network.bssid,network->bssid,6))
|
|
{
|
|
int idx = 0;
|
|
struct rtllib_hdr_3addr* header = NULL;
|
|
int idx_exist = 0;
|
|
if (timer_pending(&ieee->ibss_wait_timer))
|
|
del_timer_sync(&ieee->ibss_wait_timer);
|
|
header = (struct rtllib_hdr_3addr*)&(beacon->header);
|
|
idx_exist = IsStaInfoExist(ieee,header->addr2);
|
|
if (idx_exist >= PEER_MAX_ASSOC) {
|
|
idx = GetFreeStaInfoIdx(ieee, header->addr2);
|
|
} else {
|
|
ieee->peer_assoc_list[idx_exist]->LastActiveTime = jiffies;
|
|
goto no_alloc;
|
|
}
|
|
if (idx >= PEER_MAX_ASSOC - 1) {
|
|
printk("\n%s():ERR!!!Buffer overflow - could not append!!!",__func__);
|
|
goto free_network;
|
|
} else {
|
|
ieee->peer_assoc_list[idx] = (struct sta_info *)kmalloc(sizeof(struct sta_info), GFP_ATOMIC);
|
|
memset(ieee->peer_assoc_list[idx], 0, sizeof(struct sta_info));
|
|
ieee->peer_assoc_list[idx]->LastActiveTime = jiffies;
|
|
memcpy(ieee->peer_assoc_list[idx]->macaddr,header->addr2,ETH_ALEN);
|
|
ieee->peer_assoc_list[idx]->ratr_index = 8;
|
|
InitStaInfo(ieee,idx);
|
|
atomic_inc(&ieee->AsocEntryNum);
|
|
ieee->peer_assoc_list[idx]->aid = AsocEntry_AssignAvailableAID(ieee, ieee->peer_assoc_list[idx]->macaddr);
|
|
ieee->check_ht_cap(ieee->dev,ieee->peer_assoc_list[idx],network);
|
|
queue_delayed_work_rsl(ieee->wq, &ieee->update_assoc_sta_info_wq, 0);
|
|
ieee->Adhoc_InitRateAdaptive(ieee->dev,ieee->peer_assoc_list[idx]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (ieee->iw_mode == IW_MODE_ADHOC){
|
|
if ((network->ssid_len == ieee->current_network.ssid_len)
|
|
&& (!memcmp(network->ssid,ieee->current_network.ssid,ieee->current_network.ssid_len))
|
|
&& (network->capability & WLAN_CAPABILITY_IBSS)
|
|
&& (ieee->state == RTLLIB_LINKED_SCANNING))
|
|
{
|
|
if (memcmp(ieee->current_network.bssid,network->bssid,6))
|
|
{
|
|
printk("%s(): SSID matched but BSSID mismatched.\n",__func__);
|
|
|
|
ieee->TargetTsf = beacon->time_stamp[1];
|
|
ieee->TargetTsf <<= 32;
|
|
ieee->TargetTsf |= beacon->time_stamp[0];
|
|
|
|
ieee->CurrTsf = stats->TimeStampLow;
|
|
|
|
queue_delayed_work_rsl(ieee->wq, &ieee->check_tsf_wq, 0);
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(RTL8192U) || defined(RTL8192SU) || defined(RTL8192SE)
|
|
no_alloc:
|
|
if (ieee->iw_mode == IW_MODE_INFRA)
|
|
#endif
|
|
{
|
|
if (is_same_network(&ieee->current_network, network, (network->ssid_len?1:0))) {
|
|
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 >= RTLLIB_LINKED)
|
|
ieee->LinkDetectInfo.NumRecvBcnInPeriod++;
|
|
}
|
|
}
|
|
}
|
|
#if defined(RTL8192U) || defined(RTL8192SU) || defined(RTL8192SE)
|
|
else if (ieee->iw_mode == IW_MODE_ADHOC)
|
|
{
|
|
if (is_same_network(&ieee->current_network, network, (network->ssid_len?1:0))) {
|
|
update_ibss_network(&ieee->current_network, network);
|
|
}
|
|
}
|
|
#endif
|
|
list_for_each_entry(target, &ieee->network_list, list) {
|
|
if (is_same_network(target, network,(target->ssid_len?1:0)))
|
|
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;
|
|
RTLLIB_DEBUG_SCAN("Expired '%s' (" MAC_FMT ") from "
|
|
"network list.\n",
|
|
escape_essid(target->ssid,
|
|
target->ssid_len),
|
|
MAC_ARG(target->bssid));
|
|
} else {
|
|
/* Otherwise just pull from the free list */
|
|
target = list_entry(ieee->network_free_list.next,
|
|
struct rtllib_network, list);
|
|
list_del(ieee->network_free_list.next);
|
|
}
|
|
|
|
|
|
#ifdef CONFIG_RTLLIB_DEBUG
|
|
RTLLIB_DEBUG_SCAN("Adding '%s' (" MAC_FMT ") via %s.\n",
|
|
escape_essid(network->ssid,
|
|
network->ssid_len),
|
|
MAC_ARG(network->bssid),
|
|
WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
|
|
RTLLIB_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)
|
|
rtllib_softmac_new_net(ieee, network);
|
|
} else {
|
|
RTLLIB_DEBUG_SCAN("Updating '%s' (" MAC_FMT ") via %s.\n",
|
|
escape_essid(target->ssid,
|
|
target->ssid_len),
|
|
MAC_ARG(target->bssid),
|
|
WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
|
|
RTLLIB_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);
|
|
if ((!target->ssid_len) &&
|
|
(((network->ssid_len > 0) && (target->hidden_ssid_len == 0))
|
|
|| ((ieee->current_network.ssid_len == network->ssid_len) &&
|
|
(strncmp(ieee->current_network.ssid, network->ssid, network->ssid_len) == 0) &&
|
|
(ieee->state == RTLLIB_NOLINK)))
|
|
) {
|
|
renew = 1;
|
|
}
|
|
update_network(target, network);
|
|
if (renew && (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE))
|
|
rtllib_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, (network->ssid_len?1:0))&&\
|
|
(ieee->state == RTLLIB_LINKED)) {
|
|
if (ieee->handle_beacon != NULL) {
|
|
ieee->handle_beacon(ieee->dev,beacon,&ieee->current_network);
|
|
}
|
|
}
|
|
free_network:
|
|
kfree(network);
|
|
return;
|
|
}
|
|
|
|
void rtllib_rx_mgt(struct rtllib_device *ieee,
|
|
struct sk_buff *skb,
|
|
struct rtllib_rx_stats *stats)
|
|
{
|
|
struct rtllib_hdr_4addr *header = (struct rtllib_hdr_4addr *)skb->data ;
|
|
if (WLAN_FC_GET_STYPE(header->frame_ctl) != RTLLIB_STYPE_PROBE_RESP &&
|
|
WLAN_FC_GET_STYPE(header->frame_ctl) != RTLLIB_STYPE_BEACON)
|
|
ieee->last_rx_ps_time = jiffies;
|
|
|
|
switch (WLAN_FC_GET_STYPE(header->frame_ctl)) {
|
|
|
|
case RTLLIB_STYPE_BEACON:
|
|
RTLLIB_DEBUG_MGMT("received BEACON (%d)\n",
|
|
WLAN_FC_GET_STYPE(header->frame_ctl));
|
|
RTLLIB_DEBUG_SCAN("Beacon\n");
|
|
rtllib_process_probe_response(
|
|
ieee, (struct rtllib_probe_response *)header, stats);
|
|
|
|
if (ieee->sta_sleep || (ieee->ps != RTLLIB_PS_DISABLED &&
|
|
ieee->iw_mode == IW_MODE_INFRA &&
|
|
ieee->state == RTLLIB_LINKED))
|
|
tasklet_schedule(&ieee->ps_task);
|
|
|
|
break;
|
|
|
|
case RTLLIB_STYPE_PROBE_RESP:
|
|
RTLLIB_DEBUG_MGMT("received PROBE RESPONSE (%d)\n",
|
|
WLAN_FC_GET_STYPE(header->frame_ctl));
|
|
RTLLIB_DEBUG_SCAN("Probe response\n");
|
|
rtllib_process_probe_response(
|
|
ieee, (struct rtllib_probe_response *)header, stats);
|
|
break;
|
|
case RTLLIB_STYPE_PROBE_REQ:
|
|
RTLLIB_DEBUG_MGMT("received PROBE RESQUEST (%d)\n",
|
|
WLAN_FC_GET_STYPE(header->frame_ctl));
|
|
RTLLIB_DEBUG_SCAN("Probe request\n");
|
|
if ((ieee->softmac_features & IEEE_SOFTMAC_PROBERS) &&
|
|
((ieee->iw_mode == IW_MODE_ADHOC ||
|
|
ieee->iw_mode == IW_MODE_MASTER) &&
|
|
ieee->state == RTLLIB_LINKED)){
|
|
rtllib_rx_probe_rq(ieee, skb);
|
|
}
|
|
break;
|
|
}
|
|
|
|
}
|