Commit 329e2c00 authored by Al Viro's avatar Al Viro Committed by David S. Miller
Browse files

airo: sanitize handling of StatusRid


Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent a749716e
......@@ -648,30 +648,30 @@ typedef struct {
} ConfigRid;
typedef struct {
u16 len;
__le16 len;
u8 mac[ETH_ALEN];
u16 mode;
u16 errorCode;
u16 sigQuality;
u16 SSIDlen;
__le16 mode;
__le16 errorCode;
__le16 sigQuality;
__le16 SSIDlen;
char SSID[32];
char apName[16];
u8 bssid[4][ETH_ALEN];
u16 beaconPeriod;
u16 dimPeriod;
u16 atimDuration;
u16 hopPeriod;
u16 channelSet;
u16 channel;
u16 hopsToBackbone;
u16 apTotalLoad;
u16 generatedLoad;
u16 accumulatedArl;
u16 signalQuality;
u16 currentXmitRate;
u16 apDevExtensions;
u16 normalizedSignalStrength;
u16 shortPreamble;
__le16 beaconPeriod;
__le16 dimPeriod;
__le16 atimDuration;
__le16 hopPeriod;
__le16 channelSet;
__le16 channel;
__le16 hopsToBackbone;
__le16 apTotalLoad;
__le16 generatedLoad;
__le16 accumulatedArl;
__le16 signalQuality;
__le16 currentXmitRate;
__le16 apDevExtensions;
__le16 normalizedSignalStrength;
__le16 shortPreamble;
u8 apIP[4];
u8 noisePercent; /* Noise percent in last second */
u8 noisedBm; /* Noise dBm in last second */
......@@ -679,9 +679,9 @@ typedef struct {
u8 noiseAvedBm; /* Noise dBm in last minute */
u8 noiseMaxPercent; /* Highest noise percent in last minute */
u8 noiseMaxdBm; /* Highest noise dbm in last minute */
u16 load;
__le16 load;
u8 carrier[4];
u16 assocStatus;
__le16 assocStatus;
#define STAT_NOPACKETS 0
#define STAT_NOCARRIERSET 10
#define STAT_GOTCARRIERSET 11
......@@ -1853,18 +1853,10 @@ static int writeConfigRid(struct airo_info*ai, int lock) {
return PC4500_writerid( ai, RID_CONFIG, &cfgr, sizeof(cfgr), lock);
}
static int readStatusRid(struct airo_info*ai, StatusRid *statr, int lock) {
int rc = PC4500_readrid(ai, RID_STATUS, statr, sizeof(*statr), lock);
u16 *s;
statr->len = le16_to_cpu(statr->len);
for(s = &statr->mode; s <= &statr->SSIDlen; s++) *s = le16_to_cpu(*s);
for(s = &statr->beaconPeriod; s <= &statr->shortPreamble; s++)
*s = le16_to_cpu(*s);
statr->load = le16_to_cpu(statr->load);
statr->assocStatus = le16_to_cpu(statr->assocStatus);
return rc;
static int readStatusRid(struct airo_info *ai, StatusRid *statr, int lock)
{
return PC4500_readrid(ai, RID_STATUS, statr, sizeof(*statr), lock);
}
static int readAPListRid(struct airo_info *ai, APListRid *aplr)
......@@ -4656,13 +4648,15 @@ static ssize_t proc_write( struct file *file,
return len;
}
static int proc_status_open( struct inode *inode, struct file *file ) {
static int proc_status_open(struct inode *inode, struct file *file)
{
struct proc_data *data;
struct proc_dir_entry *dp = PDE(inode);
struct net_device *dev = dp->data;
struct airo_info *apriv = dev->priv;
CapabilityRid cap_rid;
StatusRid status_rid;
u16 mode;
int i;
if ((file->private_data = kzalloc(sizeof(struct proc_data ), GFP_KERNEL)) == NULL)
......@@ -4676,16 +4670,18 @@ static int proc_status_open( struct inode *inode, struct file *file ) {
readStatusRid(apriv, &status_rid, 1);
readCapabilityRid(apriv, &cap_rid, 1);
mode = le16_to_cpu(status_rid.mode);
i = sprintf(data->rbuffer, "Status: %s%s%s%s%s%s%s%s%s\n",
status_rid.mode & 1 ? "CFG ": "",
status_rid.mode & 2 ? "ACT ": "",
status_rid.mode & 0x10 ? "SYN ": "",
status_rid.mode & 0x20 ? "LNK ": "",
status_rid.mode & 0x40 ? "LEAP ": "",
status_rid.mode & 0x80 ? "PRIV ": "",
status_rid.mode & 0x100 ? "KEY ": "",
status_rid.mode & 0x200 ? "WEP ": "",
status_rid.mode & 0x8000 ? "ERR ": "");
mode & 1 ? "CFG ": "",
mode & 2 ? "ACT ": "",
mode & 0x10 ? "SYN ": "",
mode & 0x20 ? "LNK ": "",
mode & 0x40 ? "LEAP ": "",
mode & 0x80 ? "PRIV ": "",
mode & 0x100 ? "KEY ": "",
mode & 0x200 ? "WEP ": "",
mode & 0x8000 ? "ERR ": "");
sprintf( data->rbuffer+i, "Mode: %x\n"
"Signal Strength: %d\n"
"Signal Quality: %d\n"
......@@ -4698,14 +4694,14 @@ static int proc_status_open( struct inode *inode, struct file *file ) {
"Radio type: %x\nCountry: %x\nHardware Version: %x\n"
"Software Version: %x\nSoftware Subversion: %x\n"
"Boot block version: %x\n",
(int)status_rid.mode,
(int)status_rid.normalizedSignalStrength,
(int)status_rid.signalQuality,
(int)status_rid.SSIDlen,
le16_to_cpu(status_rid.mode),
le16_to_cpu(status_rid.normalizedSignalStrength),
le16_to_cpu(status_rid.signalQuality),
le16_to_cpu(status_rid.SSIDlen),
status_rid.SSID,
status_rid.apName,
(int)status_rid.channel,
(int)status_rid.currentXmitRate/2,
le16_to_cpu(status_rid.channel),
le16_to_cpu(status_rid.currentXmitRate) / 2,
version,
cap_rid.prodName,
cap_rid.manName,
......@@ -5726,25 +5722,27 @@ static u8 airo_dbm_to_pct (tdsRssiEntry *rssi_rid, u8 dbm)
static int airo_get_quality (StatusRid *status_rid, CapabilityRid *cap_rid)
{
int quality = 0;
u16 sq;
if ((status_rid->mode & 0x3f) != 0x3f)
if ((status_rid->mode & cpu_to_le16(0x3f)) != cpu_to_le16(0x3f))
return 0;
if (!(cap_rid->hardCap & cpu_to_le16(8)))
return 0;
sq = le16_to_cpu(status_rid->signalQuality);
if (memcmp(cap_rid->prodName, "350", 3))
if (status_rid->signalQuality > 0x20)
if (sq > 0x20)
quality = 0;
else
quality = 0x20 - status_rid->signalQuality;
quality = 0x20 - sq;
else
if (status_rid->signalQuality > 0xb0)
if (sq > 0xb0)
quality = 0;
else if (status_rid->signalQuality < 0x10)
else if (sq < 0x10)
quality = 0xa0;
else
quality = 0xb0 - status_rid->signalQuality;
quality = 0xb0 - sq;
return quality;
}
......@@ -5824,11 +5822,11 @@ static int airo_get_freq(struct net_device *dev,
readConfigRid(local, 1);
if ((local->config.opmode & 0xFF) == MODE_STA_ESS)
status_rid.channel = local->config.channelSet;
status_rid.channel = cpu_to_le16(local->config.channelSet);
else
readStatusRid(local, &status_rid, 1);
ch = (int)status_rid.channel;
ch = le16_to_cpu(status_rid.channel);
if((ch > 0) && (ch < 15)) {
fwrq->m = frequency_list[ch - 1] * 100000;
fwrq->e = 1;
......@@ -5904,11 +5902,11 @@ static int airo_get_essid(struct net_device *dev,
* get the relevant SSID from the SSID list... */
/* Get the current SSID */
memcpy(extra, status_rid.SSID, status_rid.SSIDlen);
memcpy(extra, status_rid.SSID, le16_to_cpu(status_rid.SSIDlen));
/* If none, we may want to get the one that was set */
/* Push it out ! */
dwrq->length = status_rid.SSIDlen;
dwrq->length = le16_to_cpu(status_rid.SSIDlen);
dwrq->flags = 1; /* active */
return 0;
......@@ -6098,7 +6096,7 @@ static int airo_get_rate(struct net_device *dev,
readStatusRid(local, &status_rid, 1);
vwrq->value = status_rid.currentXmitRate * 500000;
vwrq->value = le16_to_cpu(status_rid.currentXmitRate) * 500000;
/* If more than one rate, set auto */
readConfigRid(local, 1);
vwrq->fixed = (local->config.rates[1] == 0);
......@@ -7646,18 +7644,22 @@ static void airo_read_wireless_stats(struct airo_info *local)
up(&local->sem);
/* The status */
local->wstats.status = status_rid.mode;
local->wstats.status = le16_to_cpu(status_rid.mode);
/* Signal quality and co */
if (local->rssi) {
local->wstats.qual.level = airo_rssi_to_dbm( local->rssi, status_rid.sigQuality );
local->wstats.qual.level =
airo_rssi_to_dbm(local->rssi,
le16_to_cpu(status_rid.sigQuality));
/* normalizedSignalStrength appears to be a percentage */
local->wstats.qual.qual = status_rid.normalizedSignalStrength;
local->wstats.qual.qual =
le16_to_cpu(status_rid.normalizedSignalStrength);
} else {
local->wstats.qual.level = (status_rid.normalizedSignalStrength + 321) / 2;
local->wstats.qual.level =
(le16_to_cpu(status_rid.normalizedSignalStrength) + 321) / 2;
local->wstats.qual.qual = airo_get_quality(&status_rid, &cap_rid);
}
if (status_rid.len >= 124) {
if (le16_to_cpu(status_rid.len) >= 124) {
local->wstats.qual.noise = 0x100 - status_rid.noisedBm;
local->wstats.qual.updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM;
} else {
......
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