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airo: sanitize handling of WepKeyRid

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don't byteswap, update users to match that, annotate.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Al Viro 2007-12-19 19:21:51 -05:00 committed by David S. Miller
parent 17e7049140
commit 4293ea33c8
1 changed files with 33 additions and 39 deletions
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72
drivers/net/wireless/airo.c
View file

@ -501,10 +501,10 @@ typedef struct {
/* This structure came from an email sent to me from an engineer at
aironet for inclusion into this driver */
typedef struct {
u16 len;
u16 kindex;
__le16 len;
__le16 kindex;
u8 mac[ETH_ALEN];
u16 klen;
__le16 klen;
u8 key[16];
} WepKeyRid;
@ -1750,31 +1750,22 @@ static int readBSSListRid(struct airo_info *ai, int first,
list, ai->bssListRidLen, 1);
}
static int readWepKeyRid(struct airo_info*ai, WepKeyRid *wkr, int temp, int lock) {
int rc = PC4500_readrid(ai, temp ? RID_WEP_TEMP : RID_WEP_PERM,
static int readWepKeyRid(struct airo_info *ai, WepKeyRid *wkr, int temp, int lock)
{
return PC4500_readrid(ai, temp ? RID_WEP_TEMP : RID_WEP_PERM,
wkr, sizeof(*wkr), lock);
wkr->len = le16_to_cpu(wkr->len);
wkr->kindex = le16_to_cpu(wkr->kindex);
wkr->klen = le16_to_cpu(wkr->klen);
return rc;
}
/* In the writeXXXRid routines we copy the rids so that we don't screwup
* the originals when we endian them... */
static int writeWepKeyRid(struct airo_info*ai, WepKeyRid *pwkr, int perm, int lock) {
int rc;
WepKeyRid wkr = *pwkr;
wkr.len = cpu_to_le16(wkr.len);
wkr.kindex = cpu_to_le16(wkr.kindex);
wkr.klen = cpu_to_le16(wkr.klen);
rc = PC4500_writerid(ai, RID_WEP_TEMP, &wkr, sizeof(wkr), lock);
if (rc!=SUCCESS) airo_print_err(ai->dev->name, "WEP_TEMP set %x", rc);
static int writeWepKeyRid(struct airo_info *ai, WepKeyRid *wkr, int perm, int lock)
{
int rc;
rc = PC4500_writerid(ai, RID_WEP_TEMP, wkr, sizeof(*wkr), lock);
if (rc!=SUCCESS)
airo_print_err(ai->dev->name, "WEP_TEMP set %x", rc);
if (perm) {
rc = PC4500_writerid(ai, RID_WEP_PERM, &wkr, sizeof(wkr), lock);
if (rc!=SUCCESS) {
rc = PC4500_writerid(ai, RID_WEP_PERM, wkr, sizeof(*wkr), lock);
if (rc!=SUCCESS)
airo_print_err(ai->dev->name, "WEP_PERM set %x", rc);
}
}
return rc;
}
@ -3755,7 +3746,7 @@ static u16 setup_card(struct airo_info *ai, u8 *mac, int lock)
int status;
int i;
SsidRid mySsid;
u16 lastindex;
__le16 lastindex;
WepKeyRid wkr;
int rc;
@ -3891,7 +3882,7 @@ static u16 setup_card(struct airo_info *ai, u8 *mac, int lock)
rc = readWepKeyRid(ai, &wkr, 1, lock);
if (rc == SUCCESS) do {
lastindex = wkr.kindex;
if (wkr.kindex == 0xffff) {
if (wkr.kindex == cpu_to_le16(0xffff)) {
ai->defindex = wkr.mac[0];
}
rc = readWepKeyRid(ai, &wkr, 0, lock);
@ -5197,39 +5188,40 @@ static int do_writerid( struct airo_info *ai, u16 rid, const void *rid_data,
static int get_wep_key(struct airo_info *ai, u16 index) {
WepKeyRid wkr;
int rc;
u16 lastindex;
__le16 lastindex;
rc = readWepKeyRid(ai, &wkr, 1, 1);
if (rc == SUCCESS) do {
lastindex = wkr.kindex;
if (wkr.kindex == index) {
if (wkr.kindex == cpu_to_le16(index)) {
if (index == 0xffff) {
return wkr.mac[0];
}
return wkr.klen;
return le16_to_cpu(wkr.klen);
}
readWepKeyRid(ai, &wkr, 0, 1);
} while(lastindex != wkr.kindex);
} while (lastindex != wkr.kindex);
return -1;
}
static int set_wep_key(struct airo_info *ai, u16 index,
const char *key, u16 keylen, int perm, int lock ) {
const char *key, u16 keylen, int perm, int lock )
{
static const unsigned char macaddr[ETH_ALEN] = { 0x01, 0, 0, 0, 0, 0 };
WepKeyRid wkr;
memset(&wkr, 0, sizeof(wkr));
if (keylen == 0) {
// We are selecting which key to use
wkr.len = sizeof(wkr);
wkr.kindex = 0xffff;
wkr.len = cpu_to_le16(sizeof(wkr));
wkr.kindex = cpu_to_le16(0xffff);
wkr.mac[0] = (char)index;
if (perm) ai->defindex = (char)index;
} else {
// We are actually setting the key
wkr.len = sizeof(wkr);
wkr.kindex = index;
wkr.klen = keylen;
wkr.len = cpu_to_le16(sizeof(wkr));
wkr.kindex = cpu_to_le16(index);
wkr.klen = cpu_to_le16(keylen);
memcpy( wkr.key, key, keylen );
memcpy( wkr.mac, macaddr, ETH_ALEN );
}
@ -5281,14 +5273,15 @@ static void proc_wepkey_on_close( struct inode *inode, struct file *file ) {
set_wep_key(ai, index, key, i/3, 1, 1);
}
static int proc_wepkey_open( struct inode *inode, struct file *file ) {
static int proc_wepkey_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 *ai = dev->priv;
char *ptr;
WepKeyRid wkr;
u16 lastindex;
__le16 lastindex;
int j=0;
int rc;
@ -5314,12 +5307,13 @@ static int proc_wepkey_open( struct inode *inode, struct file *file ) {
rc = readWepKeyRid(ai, &wkr, 1, 1);
if (rc == SUCCESS) do {
lastindex = wkr.kindex;
if (wkr.kindex == 0xffff) {
if (wkr.kindex == cpu_to_le16(0xffff)) {
j += sprintf(ptr+j, "Tx key = %d\n",
(int)wkr.mac[0]);
} else {
j += sprintf(ptr+j, "Key %d set with length = %d\n",
(int)wkr.kindex, (int)wkr.klen);
le16_to_cpu(wkr.kindex),
le16_to_cpu(wkr.klen));
}
readWepKeyRid(ai, &wkr, 0, 1);
} while((lastindex != wkr.kindex) && (j < 180-30));