package/madwifi/patches/329-new_napi.patch

   1 Index: madwifi-trunk-r3314/ath/if_ath.c
   2 ===================================================================
   3 --- madwifi-trunk-r3314.orig/ath/if_ath.c       2008-01-31 04:25:11.617671781 +0100
   4 +++ madwifi-trunk-r3314/ath/if_ath.c    2008-01-31 05:06:04.606254148 +0100
   5 @@ -184,7 +184,11 @@
   6         struct sk_buff *, int, int, u_int64_t);
   7  static void ath_setdefantenna(struct ath_softc *, u_int);
   8  static struct ath_txq *ath_txq_setup(struct ath_softc *, int, int);
   9 +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
  10 +static int ath_rx_poll(struct napi_struct *napi, int budget);
  11 +#else
  12  static int ath_rx_poll(struct net_device *dev, int *budget);
  13 +#endif
  14  static int ath_hardstart(struct sk_buff *, struct net_device *);
  15  static int ath_mgtstart(struct ieee80211com *, struct sk_buff *);
  16  #ifdef ATH_SUPERG_COMP
  17 @@ -374,6 +378,9 @@
  18                 u_int32_t new_clamped_maxtxpower);
  19  static u_int32_t ath_get_real_maxtxpower(struct ath_softc *sc);
  20
  21 +static void ath_poll_disable(struct net_device *dev);
  22 +static void ath_poll_enable(struct net_device *dev);
  23 +
  24  /* calibrate every 30 secs in steady state but check every second at first. */
  25  static int ath_calinterval = ATH_SHORT_CALINTERVAL;
  26  static int ath_countrycode = CTRY_DEFAULT;     /* country code */
  27 @@ -818,8 +825,12 @@
  28         dev->set_mac_address = ath_set_mac_address;
  29         dev->change_mtu = ath_change_mtu;
  30         dev->tx_queue_len = ATH_TXBUF - ATH_TXBUF_MGT_RESERVED;
  31 +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
  32 +       netif_napi_add(dev, &sc->sc_napi, ath_rx_poll, 64);
  33 +#else
  34         dev->poll = ath_rx_poll;
  35         dev->weight = 64;
  36 +#endif
  37  #ifdef USE_HEADERLEN_RESV
  38         dev->hard_header_len += sizeof(struct ieee80211_qosframe) +
  39                                 sizeof(struct llc) +
  40 @@ -2268,12 +2279,21 @@
  41                 if (status & (HAL_INT_RX | HAL_INT_RXPHY)) {
  42                         ath_uapsd_processtriggers(sc, hw_tsf);
  43                         sc->sc_isr &= ~HAL_INT_RX;
  44 -                       if (netif_rx_schedule_prep(dev)) {
  45 +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
  46 +                       if (netif_rx_schedule_prep(dev, &sc->sc_napi))
  47 +#else
  48 +                       if (netif_rx_schedule_prep(dev))
  49 +#endif
  50 +                       {
  51  #ifndef ATH_PRECISE_TSF
  52                                 sc->sc_imask &= ~HAL_INT_RX;
  53                                 ath_hal_intrset(ah, sc->sc_imask);
  54  #endif
  55 +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
  56 +                               __netif_rx_schedule(dev, &sc->sc_napi);
  57 +#else
  58                                 __netif_rx_schedule(dev);
  59 +#endif
  60                         }
  61                 }
  62                 if (status & HAL_INT_TX) {
  63 @@ -2557,6 +2577,9 @@
  64                 if (sc->sc_tx99 != NULL)
  65                         sc->sc_tx99->stop(sc->sc_tx99);
  66  #endif
  67 +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
  68 +               ath_poll_disable(dev);
  69 +#endif
  70                 netif_stop_queue(dev);  /* XXX re-enabled by ath_newstate */
  71                 dev->flags &= ~IFF_RUNNING;     /* NB: avoid recursion */
  72                 ieee80211_stop_running(ic);     /* stop all VAPs */
  73 @@ -4015,6 +4038,39 @@
  74         return ath_keyset(sc, k, mac, vap->iv_bss);
  75  }
  76
  77 +static void ath_poll_disable(struct net_device *dev)
  78 +{
  79 +       struct ath_softc *sc = dev->priv;
  80 +
  81 +       /*
  82 +        * XXX Using in_softirq is not right since we might
  83 +        * be called from other soft irq contexts than
  84 +        * ath_rx_poll
  85 +        */
  86 +       if (!in_softirq()) {
  87 +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
  88 +               napi_disable(&sc->sc_napi);
  89 +#else
  90 +               netif_poll_disable(dev);
  91 +#endif
  92 +       }
  93 +}
  94 +
  95 +static void ath_poll_enable(struct net_device *dev)
  96 +{
  97 +       struct ath_softc *sc = dev->priv;
  98 +
  99 +       /* NB: see above */
 100 +       if (!in_softirq()) {
 101 +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
 102 +               napi_enable(&sc->sc_napi);
 103 +#else
 104 +               netif_poll_enable(dev);
 105 +#endif
 106 +       }
 107 +}
 108 +
 109 +
 110  /*
 111   * Block/unblock tx+rx processing while a key change is done.
 112   * We assume the caller serializes key management operations
 113 @@ -4032,13 +4088,8 @@
 114          * When called from the rx tasklet we cannot use
 115          * tasklet_disable because it will block waiting
 116          * for us to complete execution.
 117 -        *
 118 -        * XXX Using in_softirq is not right since we might
 119 -        * be called from other soft irq contexts than
 120 -        * ath_rx_poll
 121          */
 122 -       if (!in_softirq())
 123 -               netif_poll_disable(dev);
 124 +       ath_poll_disable(dev);
 125         netif_stop_queue(dev);
 126  }
 127
 128 @@ -4050,8 +4101,7 @@
 129
 130         DPRINTF(sc, ATH_DEBUG_KEYCACHE, "End\n");
 131         netif_wake_queue(dev);
 132 -       if (!in_softirq())              /* NB: see above */
 133 -               netif_poll_enable(dev);
 134 +       ath_poll_enable(dev);
 135  }
 136
 137  /*
 138 @@ -6359,24 +6409,34 @@
 139  }
 140
 141  static int
 142 +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
 143 +ath_rx_poll(struct napi_struct *napi, int budget)
 144 +#else
 145  ath_rx_poll(struct net_device *dev, int *budget)
 146 +#endif
 147  {
 148  #define        PA2DESC(_sc, _pa) \
 149         ((struct ath_desc *)((caddr_t)(_sc)->sc_rxdma.dd_desc + \
 150                 ((_pa) - (_sc)->sc_rxdma.dd_desc_paddr)))
 151 -       struct ath_buf *bf;
 152 +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
 153 +       struct ath_softc *sc = container_of(napi, struct ath_softc, sc_napi);
 154 +       struct net_device *dev = sc->sc_dev;
 155 +       u_int rx_limit = budget;
 156 +#else
 157         struct ath_softc *sc = dev->priv;
 158 +       u_int rx_limit = dev->quota;
 159 +#endif
 160         struct ieee80211com *ic = &sc->sc_ic;
 161         struct ath_hal *ah = sc ? sc->sc_ah : NULL;
 162         struct ath_desc *ds;
 163         struct ath_rx_status *rs;
 164         struct sk_buff *skb = NULL;
 165         struct ieee80211_node *ni;
 166 +       struct ath_buf *bf;
 167         unsigned int len;
 168         int type;
 169         u_int phyerr;
 170         u_int processed = 0, early_stop = 0;
 171 -       u_int rx_limit = dev->quota;
 172         u_int mic_fail = 0;
 173
 174         DPRINTF(sc, ATH_DEBUG_RX_PROC, "invoked\n");
 175 @@ -6405,7 +6465,9 @@
 176                         break;
 177                 }
 178
 179 +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
 180                 processed++;
 181 +#endif
 182                 if (rx_limit-- < 0) {
 183                         early_stop = 1;
 184                         break;
 185 @@ -6675,8 +6737,6 @@
 186                         goto process_rx_again;
 187                 }
 188  #endif
 189 -               netif_rx_complete(dev);
 190 -
 191  #ifndef ATH_PRECISE_TSF
 192                 sc->sc_imask |= HAL_INT_RX;
 193                 ath_hal_intrset(ah, sc->sc_imask);
 194 @@ -6684,11 +6744,17 @@
 195  #endif
 196         }
 197
 198 +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
 199 +       netif_rx_complete(dev, napi);
 200 +#else
 201 +       netif_rx_complete(dev);
 202         *budget -= processed;
 203 +#endif
 204
 205         /* rx signal state monitoring, only necessary/applicable for sta mode */
 206         if (sc->sc_opmode == HAL_M_STA)
 207                 ath_hal_rxmonitor(ah, &sc->sc_halstats, &sc->sc_curchan);
 208 +
 209         return early_stop;
 210  #undef PA2DESC
 211  }
 212 @@ -10395,9 +10461,9 @@
 213         dev->mtu = mtu;
 214         if ((dev->flags & IFF_RUNNING) && !sc->sc_invalid) {
 215                 /* NB: the rx buffers may need to be reallocated */
 216 -               netif_poll_disable(dev);
 217 +               ath_poll_disable(dev);
 218                 error = ath_reset(dev);
 219 -               netif_poll_enable(dev);
 220 +               ath_poll_enable(dev);
 221         }
 222         ATH_UNLOCK(sc);
 223
 224 Index: madwifi-trunk-r3314/ath/if_athvar.h
 225 ===================================================================
 226 --- madwifi-trunk-r3314.orig/ath/if_athvar.h    2008-01-31 04:25:14.001807644 +0100
 227 +++ madwifi-trunk-r3314/ath/if_athvar.h 2008-01-31 04:32:31.858759693 +0100
 228 @@ -620,6 +620,9 @@
 229  struct ath_softc {
 230         struct ieee80211com sc_ic;              /* NB: must be first */
 231         struct net_device *sc_dev;
 232 +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
 233 +       struct napi_struct sc_napi;
 234 +#endif
 235         void __iomem *sc_iobase;                /* address of the device */
 236         struct semaphore sc_lock;               /* dev-level lock */
 237         struct net_device_stats sc_devstats;    /* device statistics */