package/madwifi/patches/118-txstop_workaround.patch

   1 diff -urN madwifi-ng-refcount-r2313-20070505.old/ath/if_ath.c madwifi-ng-refcount-r2313-20070505.dev/ath/if_ath.c
   2 --- madwifi-ng-refcount-r2313-20070505.old/ath/if_ath.c 2007-05-13 18:17:56.196025944 +0200
   3 +++ madwifi-ng-refcount-r2313-20070505.dev/ath/if_ath.c 2007-05-13 18:17:56.284012568 +0200
   4 @@ -1711,6 +1711,7 @@
   5                         }
   6  #endif
   7                         ATH_SCHEDULE_TQUEUE(&sc->sc_txtq, &needmark);
   8 +                       sc->sc_tx_start = 0;
   9                 }
  10                 if (status & HAL_INT_BMISS) {
  11                         sc->sc_stats.ast_bmiss++;
  12 @@ -2264,6 +2265,17 @@
  13                 txq->axq_link = &lastds->ds_link;
  14                 ath_hal_txstart(ah, txq->axq_qnum);
  15                 sc->sc_dev->trans_start = jiffies;
  16 +               if ((sc->sc_opmode == HAL_M_IBSS) || (sc->sc_opmode == HAL_M_HOSTAP)) {
  17 +                       if (sc->sc_tx_start) {
  18 +                               if (jiffies > sc->sc_tx_start + 2 * HZ) {
  19 +                                       printk("%s: Tx queue stuck. Resetting hardware...\n", sc->sc_dev->name);
  20 +                                       ath_reset(sc->sc_dev);
  21 +                                       sc->sc_tx_start = 0;
  22 +                               }
  23 +                       } else {
  24 +                               sc->sc_tx_start = jiffies;
  25 +                       }
  26 +               }
  27         }
  28         ATH_TXQ_UNLOCK(txq);
  29
  30 diff -urN madwifi-ng-refcount-r2313-20070505.old/ath/if_athvar.h madwifi-ng-refcount-r2313-20070505.dev/ath/if_athvar.h
  31 --- madwifi-ng-refcount-r2313-20070505.old/ath/if_athvar.h      2007-05-04 23:09:29.000000000 +0200
  32 +++ madwifi-ng-refcount-r2313-20070505.dev/ath/if_athvar.h      2007-05-13 18:17:56.285012416 +0200
  33 @@ -689,6 +689,14 @@
  34  #endif
  35         u_int sc_slottimeconf;                  /* manual override for slottime */
  36         int16_t sc_channoise;                   /* Measured noise of current channel (dBm) */
  37 +
  38 +       /*
  39 +        * Several MiniPCI cards and most SoC revs frequently cease all transmission
  40 +        * when operating in IBSS mode. The reason for this is unknown and could potentially
  41 +        * be a hardware bug. This variable contains the timestamp of the last successful
  42 +        * transmission and is checked when enqueueing new frames
  43 +        */
  44 +       unsigned long sc_tx_start;
  45  };
  46
  47  typedef void (*ath_callback) (struct ath_softc *);