package/madwifi/patches/301-tx_locking.patch

   1 Index: madwifi-ng-r2420-20070602/ath/if_ath.c
   2 ===================================================================
   3 --- madwifi-ng-r2420-20070602.orig/ath/if_ath.c 2007-06-04 13:21:58.427094400 +0200
   4 +++ madwifi-ng-r2420-20070602/ath/if_ath.c      2007-06-04 13:21:58.684055336 +0200
   5 @@ -2554,7 +2554,7 @@
   6         /* NB: use this lock to protect an->an_ff_txbuf in athff_can_aggregate()
   7          *     call too.
   8          */
   9 -       ATH_TXQ_LOCK_IRQ(txq);
  10 +       ATH_TXQ_LOCK_BH(txq);
  11         if (athff_can_aggregate(sc, eh, an, skb, vap->iv_fragthreshold, &ff_flush)) {
  12                 if (an->an_tx_ffbuf[skb->priority]) { /* i.e., frame on the staging queue */
  13                         bf = an->an_tx_ffbuf[skb->priority];
  14 @@ -2562,6 +2562,7 @@
  15                         /* get (and remove) the frame from staging queue */
  16                         TAILQ_REMOVE(&txq->axq_stageq, bf, bf_stagelist);
  17                         an->an_tx_ffbuf[skb->priority] = NULL;
  18 +                       ATH_TXQ_UNLOCK_BH(txq);
  19
  20                         /*
  21                          * chain skbs and add FF magic
  22 @@ -2584,7 +2585,7 @@
  23                          */
  24                         ATH_HARDSTART_GET_TX_BUF_WITH_LOCK;
  25                         if (bf == NULL) {
  26 -                               ATH_TXQ_UNLOCK_IRQ_EARLY(txq);
  27 +                               ATH_TXQ_UNLOCK_BH(txq);
  28                                 goto hardstart_fail;
  29                         }
  30                         DPRINTF(sc, ATH_DEBUG_XMIT | ATH_DEBUG_FF,
  31 @@ -2596,8 +2597,7 @@
  32                         an->an_tx_ffbuf[skb->priority] = bf;
  33
  34                         TAILQ_INSERT_HEAD(&txq->axq_stageq, bf, bf_stagelist);
  35 -
  36 -                       ATH_TXQ_UNLOCK_IRQ_EARLY(txq);
  37 +                       ATH_TXQ_UNLOCK_BH(txq);
  38
  39                         return 0;
  40                 }
  41 @@ -2649,12 +2649,12 @@
  42
  43                 ATH_HARDSTART_GET_TX_BUF_WITH_LOCK;
  44                 if (bf == NULL) {
  45 -                       ATH_TXQ_UNLOCK_IRQ_EARLY(txq);
  46 +                       ATH_TXQ_UNLOCK_BH(txq);
  47                         goto hardstart_fail;
  48                 }
  49 +               ATH_TXQ_UNLOCK_BH(txq);
  50         }
  51
  52 -       ATH_TXQ_UNLOCK_IRQ(txq);
  53
  54  ff_bypass:
  55
  56 Index: madwifi-ng-r2420-20070602/ath/if_athvar.h
  57 ===================================================================
  58 --- madwifi-ng-r2420-20070602.orig/ath/if_athvar.h      2007-06-04 13:21:58.428094248 +0200
  59 +++ madwifi-ng-r2420-20070602/ath/if_athvar.h   2007-06-04 13:21:58.684055336 +0200
  60 @@ -484,6 +484,8 @@
  61  #define ATH_TXQ_INTR_PERIOD            5  /* axq_intrcnt period for intr gen */
  62  #define        ATH_TXQ_LOCK_INIT(_tq)          spin_lock_init(&(_tq)->axq_lock)
  63  #define        ATH_TXQ_LOCK_DESTROY(_tq)
  64 +#define ATH_TXQ_LOCK_BH(_tq)           spin_lock_bh(&(_tq)->axq_lock);
  65 +#define ATH_TXQ_UNLOCK_BH(_tq)         spin_unlock_bh(&(_tq)->axq_lock);
  66  #define ATH_TXQ_LOCK_IRQ(_tq)          do {                            \
  67         unsigned long __axq_lockflags;                                  \
  68         spin_lock_irqsave(&(_tq)->axq_lock, __axq_lockflags);