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Fixes missed beacon logic in relation to on-network AP roaming.

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Signed-off-by: James Ketrenos <jketreno@linux.intel.com>
This commit is contained in:
Ben Cahill 2005-10-06 15:34:41 -05:00 committed by James Ketrenos
parent 8935f39e86
commit e758256104
2 changed files with 23 additions and 7 deletions
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19
drivers/net/wireless/ipw2200.c
View File

@ -4082,6 +4082,11 @@ static void ipw_bg_gather_stats(void *data)
up(&priv->sem); up(&priv->sem);
} }
/* Missed beacon behavior:
* 1st missed -> roaming_threshold, just wait, don't do any scan/roam.
* roaming_threshold -> disassociate_threshold, scan and roam for better signal.
* Above disassociate threshold, give up and stop scanning.
* Roaming is disabled if disassociate_threshold <= roaming_threshold */
static inline void ipw_handle_missed_beacon(struct ipw_priv *priv, static inline void ipw_handle_missed_beacon(struct ipw_priv *priv,
int missed_count) int missed_count)
{ {
@ -4116,9 +4121,12 @@ static inline void ipw_handle_missed_beacon(struct ipw_priv *priv,
return; return;
} }
if (missed_count > priv->roaming_threshold) { if (missed_count > priv->roaming_threshold &&
missed_count <= priv->disassociate_threshold) {
/* If we are not already roaming, set the ROAM /* If we are not already roaming, set the ROAM
* bit in the status and kick off a scan */ * bit in the status and kick off a scan.
* This can happen several times before we reach
* disassociate_threshold. */
IPW_DEBUG(IPW_DL_NOTIF | IPW_DL_STATE, IPW_DEBUG(IPW_DL_NOTIF | IPW_DL_STATE,
"Missed beacon: %d - initiate " "Missed beacon: %d - initiate "
"roaming\n", missed_count); "roaming\n", missed_count);
@ -4480,11 +4488,16 @@ static inline void ipw_rx_notification(struct ipw_priv *priv,
STATUS_DISASSOCIATING))) STATUS_DISASSOCIATING)))
queue_work(priv->workqueue, &priv->associate); queue_work(priv->workqueue, &priv->associate);
else if (priv->status & STATUS_ROAMING) { else if (priv->status & STATUS_ROAMING) {
if (x->status == SCAN_COMPLETED_STATUS_COMPLETE)
/* If a scan completed and we are in roam mode, then /* If a scan completed and we are in roam mode, then
* the scan that completed was the one requested as a * the scan that completed was the one requested as a
* result of entering roam... so, schedule the * result of entering roam... so, schedule the
* roam work */ * roam work */
queue_work(priv->workqueue, &priv->roam); queue_work(priv->workqueue,
&priv->roam);
else
/* Don't schedule if we aborted the scan */
priv->status &= ~STATUS_ROAMING;
} else if (priv->status & STATUS_SCAN_PENDING) } else if (priv->status & STATUS_SCAN_PENDING)
queue_work(priv->workqueue, queue_work(priv->workqueue,
&priv->request_scan); &priv->request_scan);

3
drivers/net/wireless/ipw2200.h
View File

@ -590,6 +590,9 @@ struct notif_channel_result {
u8 uReserved; u8 uReserved;
} __attribute__ ((packed)); } __attribute__ ((packed));
#define SCAN_COMPLETED_STATUS_COMPLETE 1
#define SCAN_COMPLETED_STATUS_ABORTED 2
struct notif_scan_complete { struct notif_scan_complete {
u8 scan_type; u8 scan_type;
u8 num_channels; u8 num_channels;