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Index: madwifi-ng-r2525-20070630/ath/if_ath.c
===================================================================
--- madwifi-ng-r2525-20070630.orig/ath/if_ath.c 2007-07-03 23:02:29.657897250 +0200
+++ madwifi-ng-r2525-20070630/ath/if_ath.c 2007-07-03 23:02:29.917913500 +0200
@@ -2253,6 +2253,17 @@
txq->axq_link = &lastds->ds_link;
ath_hal_txstart(ah, txq->axq_qnum);
sc->sc_dev->trans_start = jiffies;
+ if ((sc->sc_opmode == HAL_M_IBSS) || (sc->sc_opmode == HAL_M_HOSTAP)) {
+ if (sc->sc_tx_start && (ath_hal_numtxpending(ah, txq->axq_qnum) > 2)) {
+ if (jiffies > sc->sc_tx_start + 2 * HZ) {
+ printk("%s: Tx queue stuck. Resetting hardware...\n", sc->sc_dev->name);
+ ath_reset(sc->sc_dev);
+ sc->sc_tx_start = 0;
+ }
+ } else {
+ sc->sc_tx_start = jiffies;
+ }
+ }
}
ATH_TXQ_UNLOCK_IRQ(txq);
@@ -7312,6 +7323,7 @@
__func__, ds);
#else
ds = bf->bf_desc; /* NB: last descriptor */
+ sc->sc_tx_start = 0;
#endif
ts = &bf->bf_dsstatus.ds_txstat;
status = ath_hal_txprocdesc(ah, ds, ts);
Index: madwifi-ng-r2525-20070630/ath/if_athvar.h
===================================================================
--- madwifi-ng-r2525-20070630.orig/ath/if_athvar.h 2007-07-03 23:02:25.669648000 +0200
+++ madwifi-ng-r2525-20070630/ath/if_athvar.h 2007-07-03 23:02:29.917913500 +0200
@@ -690,6 +690,14 @@
u_int sc_slottimeconf; /* manual override for slottime */
int16_t sc_channoise; /* Measured noise of current channel (dBm) */
u_int64_t sc_tsf; /* TSF at last rx interrupt */
+
+ /*
+ * Several MiniPCI cards and most SoC revs frequently cease all transmission
+ * when operating in IBSS mode. The reason for this is unknown and could potentially
+ * be a hardware bug. This variable contains the timestamp of the last successful
+ * transmission and is checked when enqueueing new frames
+ */
+ unsigned long sc_tx_start;
};
typedef void (*ath_callback) (struct ath_softc *);
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