Fix some endian issues too.
Signed-off-by: Dan Williams <dcbw@xxxxxxxxxx>
diff --git a/drivers/net/wireless/airo.c b/drivers/net/wireless/airo.c
index 8fa8585..1b64da6 100644
--- a/drivers/net/wireless/airo.c
+++ b/drivers/net/wireless/airo.c
@@ -1302,6 +1302,29 @@ static void emmh32_update(emmh32_context *context, u8 *pOctets, int len);
static void emmh32_final(emmh32_context *context, u8 digest[4]);
static int flashpchar(struct airo_info *ai,int byte,int dwelltime);
+static void age_mic_context(miccntx *cur, miccntx *old, u8 *key, int key_len,
+ struct crypto_cipher *tfm)
+{
+ /* If the current MIC context is valid and its key is the same as
+ * the MIC register, there's nothing to do.
+ */
+ if (cur->valid && (memcmp(cur->key, key, key_len) == 0))
+ return;
+
+ /* Age current mic Context */
+ memcpy(old, cur, sizeof(*cur));
+
+ /* Initialize new context */
+ memcpy(cur->key, key, key_len);
+ cur->window = 33; /* Window always points to the middle */
+ cur->rx = 0; /* Rx Sequence numbers */
+ cur->tx = 0; /* Tx sequence numbers */
+ cur->valid = 1; /* Key is now valid */
+
+ /* Give key to mic seed */
+ emmh32_setseed(&cur->seed, key, key_len, tfm);
+}
+
/* micinit - Initialize mic seed */
static void micinit(struct airo_info *ai)
@@ -1312,49 +1335,26 @@ static void micinit(struct airo_info *ai)
PC4500_readrid(ai, RID_MIC, &mic_rid, sizeof(mic_rid), 0);
up(&ai->sem);
- ai->micstats.enabled = (mic_rid.state & 0x00FF) ? 1 : 0;
-
- if (ai->micstats.enabled) {
- /* Key must be valid and different */
- if (mic_rid.multicastValid && (!ai->mod[0].mCtx.valid ||
- (memcmp (ai->mod[0].mCtx.key, mic_rid.multicast,
- sizeof(ai->mod[0].mCtx.key)) != 0))) {
- /* Age current mic Context */
- memcpy(&ai->mod[1].mCtx,&ai->mod[0].mCtx,sizeof(miccntx));
- /* Initialize new context */
- memcpy(&ai->mod[0].mCtx.key,mic_rid.multicast,sizeof(mic_rid.multicast));
- ai->mod[0].mCtx.window = 33; //Window always points to the middle
- ai->mod[0].mCtx.rx = 0; //Rx Sequence numbers
- ai->mod[0].mCtx.tx = 0; //Tx sequence numbers
- ai->mod[0].mCtx.valid = 1; //Key is now valid
-
- /* Give key to mic seed */
- emmh32_setseed(&ai->mod[0].mCtx.seed,mic_rid.multicast,sizeof(mic_rid.multicast), ai->tfm);
- }
-
- /* Key must be valid and different */
- if (mic_rid.unicastValid && (!ai->mod[0].uCtx.valid ||
- (memcmp(ai->mod[0].uCtx.key, mic_rid.unicast,
- sizeof(ai->mod[0].uCtx.key)) != 0))) {
- /* Age current mic Context */
- memcpy(&ai->mod[1].uCtx,&ai->mod[0].uCtx,sizeof(miccntx));
- /* Initialize new context */
- memcpy(&ai->mod[0].uCtx.key,mic_rid.unicast,sizeof(mic_rid.unicast));
-
- ai->mod[0].uCtx.window = 33; //Window always points to the middle
- ai->mod[0].uCtx.rx = 0; //Rx Sequence numbers
- ai->mod[0].uCtx.tx = 0; //Tx sequence numbers
- ai->mod[0].uCtx.valid = 1; //Key is now valid
-
- //Give key to mic seed
- emmh32_setseed(&ai->mod[0].uCtx.seed, mic_rid.unicast, sizeof(mic_rid.unicast), ai->tfm);
- }
- } else {
- /* So next time we have a valid key and mic is enabled, we will update
- * the sequence number if the key is the same as before.
- */
+ ai->micstats.enabled = (le16_to_cpu(mic_rid.state) & 0x00FF) ? 1 : 0;
+ if (!ai->micstats.enabled) {
+ /* So next time we have a valid key and mic is enabled, we will
+ * update the sequence number if the key is the same as before.
+ */
ai->mod[0].uCtx.valid = 0;
ai->mod[0].mCtx.valid = 0;
+ return;
+ }
+
+ if (mic_rid.multicastValid) {
+ age_mic_context(&ai->mod[0].mCtx, &ai->mod[1].mCtx,
+ mic_rid.multicast, sizeof(mic_rid.multicast),
+ ai->tfm);
+ }
+
+ if (mic_rid.unicastValid) {
+ age_mic_context(&ai->mod[0].uCtx, &ai->mod[1].uCtx,
+ mic_rid.unicast, sizeof(mic_rid.unicast),
+ ai->tfm);
}
}
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