X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/617e6409e74adfc2b9c9856479dec814ed7b5c7b..5a304bac4e4bf4e03a75e4f79e1970395a5296b4:/package/madwifi/patches/300-napi_polling.patch?ds=inline

diff --git a/package/madwifi/patches/300-napi_polling.patch b/package/madwifi/patches/300-napi_polling.patch
index d5d8ef881..bde768494 100644
--- a/package/madwifi/patches/300-napi_polling.patch
+++ b/package/madwifi/patches/300-napi_polling.patch
@@ -1,58 +1,81 @@
-Index: madwifi-ng-r2978-20071127/ath/if_ath.c
-===================================================================
---- madwifi-ng-r2978-20071127.orig/ath/if_ath.c	2007-11-27 21:47:06.136758995 +0100
-+++ madwifi-ng-r2978-20071127/ath/if_ath.c	2007-11-27 21:49:11.439899616 +0100
-@@ -183,7 +183,7 @@
- 	int, u_int64_t);
+--- a/ath/if_ath.c
++++ b/ath/if_ath.c
+@@ -184,7 +184,11 @@ static void ath_recv_mgmt(struct ieee802
+ 	struct sk_buff *, int, int, u_int64_t);
  static void ath_setdefantenna(struct ath_softc *, u_int);
  static struct ath_txq *ath_txq_setup(struct ath_softc *, int, int);
 -static void ath_rx_tasklet(TQUEUE_ARG);
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
++static int ath_rx_poll(struct napi_struct *napi, int budget);
++#else
 +static int ath_rx_poll(struct net_device *dev, int *budget);
++#endif
  static int ath_hardstart(struct sk_buff *, struct net_device *);
  static int ath_mgtstart(struct ieee80211com *, struct sk_buff *);
  #ifdef ATH_SUPERG_COMP
-@@ -552,7 +552,6 @@
- 	ATH_TXBUF_LOCK_INIT(sc);
- 	ATH_RXBUF_LOCK_INIT(sc);
+@@ -376,6 +380,9 @@ static u_int32_t ath_set_clamped_maxtxpo
+ 		u_int32_t new_clamped_maxtxpower);
+ static u_int32_t ath_get_real_maxtxpower(struct ath_softc *sc);
+ 
++static void ath_poll_disable(struct net_device *dev);
++static void ath_poll_enable(struct net_device *dev);
++
+ /* calibrate every 30 secs in steady state but check every second at first. */
+ static int ath_calinterval = ATH_SHORT_CALINTERVAL;
+ static int ath_countrycode = CTRY_DEFAULT;	/* country code */
+@@ -547,7 +554,6 @@ ath_attach(u_int16_t devid, struct net_d
+ 
+ 	atomic_set(&sc->sc_txbuf_counter, 0);
  
 -	ATH_INIT_TQUEUE(&sc->sc_rxtq,     ath_rx_tasklet,	dev);
  	ATH_INIT_TQUEUE(&sc->sc_txtq,	  ath_tx_tasklet,	dev);
  	ATH_INIT_TQUEUE(&sc->sc_bmisstq,  ath_bmiss_tasklet,	dev);
  	ATH_INIT_TQUEUE(&sc->sc_bstucktq, ath_bstuck_tasklet,	dev);
-@@ -807,6 +806,8 @@
+@@ -821,6 +827,12 @@ ath_attach(u_int16_t devid, struct net_d
  	dev->set_mac_address = ath_set_mac_address;
  	dev->change_mtu = ath_change_mtu;
- 	dev->tx_queue_len = ATH_TXBUF - 1;		/* 1 for mgmt frame */
+ 	dev->tx_queue_len = ATH_TXBUF - ATH_TXBUF_MGT_RESERVED;
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
++	netif_napi_add(dev, &sc->sc_napi, ath_rx_poll, 64);
++#else
 +	dev->poll = ath_rx_poll;
 +	dev->weight = 64;
++#endif
  #ifdef USE_HEADERLEN_RESV
  	dev->hard_header_len += sizeof(struct ieee80211_qosframe) +
  				sizeof(struct llc) +
-@@ -2014,6 +2015,7 @@
- 		(status & HAL_INT_RXPHY)   ? " HAL_INT_RXPHY"   : "",
- 		(status & HAL_INT_SWBA)    ? " HAL_INT_SWBA"    : "");
+@@ -2220,6 +2232,7 @@ ath_intr(int irq, void *dev_id, struct p
+ 		(status & HAL_INT_GLOBAL)	? " HAL_INT_GLOBAL"	: ""
+ 		);
  
 +	sc->sc_isr = status;
  	status &= sc->sc_imask;			/* discard unasked for bits */
- 	if (status & HAL_INT_FATAL) {
- 		sc->sc_stats.ast_hardware++;
-@@ -2051,7 +2053,14 @@
+ 	/* As soon as we know we have a real interrupt we intend to service, 
+ 	 * we will check to see if we need an initial hardware TSF reading. 
+@@ -2277,7 +2290,21 @@ ath_intr(int irq, void *dev_id, struct p
  		}
  		if (status & (HAL_INT_RX | HAL_INT_RXPHY)) {
- 			ath_uapsd_processtriggers(sc);
+ 			ath_uapsd_processtriggers(sc, hw_tsf);
 -			ATH_SCHEDULE_TQUEUE(&sc->sc_rxtq, &needmark);
 +			sc->sc_isr &= ~HAL_INT_RX;
-+			if (netif_rx_schedule_prep(dev)) {
-+#ifndef ATH_PRECISE_TSF
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
++			if (netif_rx_schedule_prep(dev, &sc->sc_napi))
++#else
++			if (netif_rx_schedule_prep(dev))
++#endif
++			{
 +				sc->sc_imask &= ~HAL_INT_RX;
 +				ath_hal_intrset(ah, sc->sc_imask);
-+#endif
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
++				__netif_rx_schedule(dev, &sc->sc_napi);
++#else
 +				__netif_rx_schedule(dev);
++#endif
 +			}
  		}
  		if (status & HAL_INT_TX) {
  #ifdef ATH_SUPERG_DYNTURBO
-@@ -2077,6 +2086,11 @@
+@@ -2303,6 +2330,11 @@ ath_intr(int irq, void *dev_id, struct p
  				}
  			}
  #endif
@@ -64,71 +87,160 @@ Index: madwifi-ng-r2978-20071127/ath/if_ath.c
  			ATH_SCHEDULE_TQUEUE(&sc->sc_txtq, &needmark);
  		}
  		if (status & HAL_INT_BMISS) {
-@@ -3750,10 +3764,10 @@
- 	 *
- 	 * XXX Using in_softirq is not right since we might
- 	 * be called from other soft irq contexts than
--	 * ath_rx_tasklet.
+@@ -2515,6 +2547,7 @@ ath_init(struct net_device *dev)
+ 	if (sc->sc_tx99 != NULL)
+ 		sc->sc_tx99->start(sc->sc_tx99);
+ #endif
++	ath_poll_enable(dev);
+ 
+ done:
+ 	ATH_UNLOCK(sc);
+@@ -2555,6 +2588,9 @@ ath_stop_locked(struct net_device *dev)
+ 		if (sc->sc_tx99 != NULL)
+ 			sc->sc_tx99->stop(sc->sc_tx99);
+ #endif
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
++		ath_poll_disable(dev);
++#endif
+ 		netif_stop_queue(dev);	/* XXX re-enabled by ath_newstate */
+ 		dev->flags &= ~IFF_RUNNING;	/* NB: avoid recursion */
+ 		ieee80211_stop_running(ic);	/* stop all VAPs */
+@@ -4013,12 +4049,47 @@ ath_key_set(struct ieee80211vap *vap, co
+ 	return ath_keyset(sc, k, mac, vap->iv_bss);
+ }
+ 
++static void ath_poll_disable(struct net_device *dev)
++{
++	struct ath_softc *sc = dev->priv;
++
++	/*
++	 * XXX Using in_softirq is not right since we might
++	 * be called from other soft irq contexts than
 +	 * ath_rx_poll
++	 */
++	if (!in_softirq()) {
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
++		napi_disable(&sc->sc_napi);
++#else
++		netif_poll_disable(dev);
++#endif
++	}
++}
++
++static void ath_poll_enable(struct net_device *dev)
++{
++	struct ath_softc *sc = dev->priv;
++
++	/* NB: see above */
++	if (!in_softirq()) {
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
++		napi_enable(&sc->sc_napi);
++#else
++		netif_poll_enable(dev);
++#endif
++	}
++}
++
++
+ /*
+  * Block/unblock tx+rx processing while a key change is done.
+  * We assume the caller serializes key management operations
+  * so we only need to worry about synchronization with other
+  * uses that originate in the driver.
+  */
++#define	IS_UP(_dev) \
++	(((_dev)->flags & (IFF_RUNNING|IFF_UP)) == (IFF_RUNNING|IFF_UP))
+ static void
+ ath_key_update_begin(struct ieee80211vap *vap)
+ {
+@@ -4032,14 +4103,9 @@ ath_key_update_begin(struct ieee80211vap
+ 	 * When called from the rx tasklet we cannot use
+ 	 * tasklet_disable because it will block waiting
+ 	 * for us to complete execution.
+-	 *
+-	 * XXX Using in_softirq is not right since we might
+-	 * be called from other soft irq contexts than
+-	 * ath_rx_tasklet.
  	 */
- 	if (!in_softirq())
+-	if (!in_softirq())
 -		tasklet_disable(&sc->sc_rxtq);
-+		netif_poll_disable(dev);
- 	netif_stop_queue(dev);
+-	netif_stop_queue(dev);
++	if (IS_UP(vap->iv_dev))
++		netif_stop_queue(dev);
  }
  
-@@ -3766,7 +3780,7 @@
- 	DPRINTF(sc, ATH_DEBUG_KEYCACHE, "%s:\n", __func__);
- 	netif_start_queue(dev);
- 	if (!in_softirq())		/* NB: see above */
+ static void
+@@ -4051,9 +4117,9 @@ ath_key_update_end(struct ieee80211vap *
+ #endif
+ 
+ 	DPRINTF(sc, ATH_DEBUG_KEYCACHE, "End\n");
+-	netif_wake_queue(dev);
+-	if (!in_softirq())		/* NB: see above */
 -		tasklet_enable(&sc->sc_rxtq);
-+		netif_poll_enable(dev);
++
++	if (IS_UP(vap->iv_dev))
++		netif_wake_queue(dev);
  }
  
  /*
-@@ -6050,13 +6064,12 @@
+@@ -6360,15 +6426,25 @@ ath_setdefantenna(struct ath_softc *sc,
  	sc->sc_rxotherant = 0;
  }
  
 -static void
 -ath_rx_tasklet(TQUEUE_ARG data)
 +static int
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
++ath_rx_poll(struct napi_struct *napi, int budget)
++#else
 +ath_rx_poll(struct net_device *dev, int *budget)
++#endif
  {
  #define	PA2DESC(_sc, _pa) \
  	((struct ath_desc *)((caddr_t)(_sc)->sc_rxdma.dd_desc + \
  		((_pa) - (_sc)->sc_rxdma.dd_desc_paddr)))
 -	struct net_device *dev = (struct net_device *)data;
- 	struct ath_buf *bf;
+-	struct ath_buf *bf;
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
++	struct ath_softc *sc = container_of(napi, struct ath_softc, sc_napi);
++	struct net_device *dev = sc->sc_dev;
++	u_int rx_limit = budget;
++#else
  	struct ath_softc *sc = dev->priv;
++	u_int rx_limit = min(dev->quota, *budget);
++#endif
++	struct ath_buf *bf;
  	struct ieee80211com *ic = &sc->sc_ic;
-@@ -6068,8 +6081,11 @@
+ 	struct ath_hal *ah = sc ? sc->sc_ah : NULL;
+ 	struct ath_desc *ds;
+@@ -6378,8 +6454,10 @@ ath_rx_tasklet(TQUEUE_ARG data)
  	unsigned int len;
  	int type;
  	u_int phyerr;
 +	u_int processed = 0, early_stop = 0;
-+	u_int rx_limit = dev->quota;
  
- 	DPRINTF(sc, ATH_DEBUG_RX_PROC, "%s\n", __func__);
+ 	DPRINTF(sc, ATH_DEBUG_RX_PROC, "invoked\n");
 +process_rx_again:
  	do {
  		bf = STAILQ_FIRST(&sc->sc_rxbuf);
  		if (bf == NULL) {		/* XXX ??? can this happen */
-@@ -6093,6 +6109,13 @@
+@@ -6403,6 +6481,15 @@ ath_rx_tasklet(TQUEUE_ARG data)
  			/* NB: never process the self-linked entry at the end */
  			break;
  		}
 +
-+		processed++;
-+		if (rx_limit-- < 0) {
++		if (rx_limit-- < 2) {
 +			early_stop = 1;
 +			break;
 +		}
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
++		processed++;
++#endif
 +
  		skb = bf->bf_skb;
  		if (skb == NULL) {
- 			printk("%s: no skbuff (%s)\n", DEV_NAME(dev), __func__);
-@@ -6137,6 +6160,7 @@
+ 			EPRINTF(sc, "Dropping; buffer contains NULL skbuff.\n");
+@@ -6450,6 +6537,7 @@ ath_rx_tasklet(TQUEUE_ARG data)
  				sc->sc_stats.ast_rx_phyerr++;
  				phyerr = rs->rs_phyerr & 0x1f;
  				sc->sc_stats.ast_rx_phy[phyerr]++;
@@ -136,43 +248,51 @@ Index: madwifi-ng-r2978-20071127/ath/if_ath.c
  			}
  			if (rs->rs_status & HAL_RXERR_DECRYPT) {
  				/*
-@@ -6342,9 +6366,33 @@
+@@ -6645,9 +6733,39 @@ rx_next:
  		STAILQ_INSERT_TAIL(&sc->sc_rxbuf, bf, bf_list);
  		ATH_RXBUF_UNLOCK_IRQ(sc);
  	} while (ath_rxbuf_init(sc, bf) == 0);
 +	if (!early_stop) {
++		unsigned long flags;
 +		/* Check if more data is received while we were
 +		 * processing the descriptor chain.
 +		 */
-+#ifndef ATH_PRECISE_TSF
-+		ATH_DISABLE_INTR();
++		local_irq_save(flags);
 +		if (sc->sc_isr & HAL_INT_RX) {
++			u_int64_t hw_tsf = ath_hal_gettsf64(ah);
 +			sc->sc_isr &= ~HAL_INT_RX;
-+			ATH_ENABLE_INTR();
-+			ath_uapsd_processtriggers(sc);
++			local_irq_restore(flags);
++			ath_uapsd_processtriggers(sc, hw_tsf);
 +			goto process_rx_again;
 +		}
-+#endif
-+		netif_rx_complete(dev);
-+
-+#ifndef ATH_PRECISE_TSF
-+		sc->sc_imask |= HAL_INT_RX;
-+		ath_hal_intrset(ah, sc->sc_imask);
-+		ATH_ENABLE_INTR();
-+#endif
++		local_irq_restore(flags);
 +	}
 +
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
++	netif_rx_complete(dev, napi);
++#else
++	netif_rx_complete(dev);
 +	*budget -= processed;
++	dev->quota -= processed;
++#endif
++	sc->sc_imask |= HAL_INT_RX;
++	ath_hal_intrset(ah, sc->sc_imask);
  
  	/* rx signal state monitoring */
  	ath_hal_rxmonitor(ah, &sc->sc_halstats, &sc->sc_curchan);
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
++	return processed;
++#else
 +	return early_stop;
++#endif
  #undef PA2DESC
  }
  
-@@ -7964,11 +8012,22 @@
+@@ -8298,12 +8416,24 @@ ath_tx_tasklet_q0(TQUEUE_ARG data)
+ {
  	struct net_device *dev = (struct net_device *)data;
  	struct ath_softc *sc = dev->priv;
++	unsigned long flags;
  
 +process_tx_again:
  	if (txqactive(sc->sc_ah, 0))
@@ -180,96 +300,89 @@ Index: madwifi-ng-r2978-20071127/ath/if_ath.c
  	if (txqactive(sc->sc_ah, sc->sc_cabq->axq_qnum))
  		ath_tx_processq(sc, sc->sc_cabq);
  
-+	ATH_DISABLE_INTR();
++	local_irq_save(flags);
 +	if (sc->sc_isr & HAL_INT_TX) {
 +		sc->sc_isr &= ~HAL_INT_TX;
-+		ATH_ENABLE_INTR();
++		local_irq_restore(flags);
 +		goto process_tx_again;
 +	}
 +	sc->sc_imask |= HAL_INT_TX;
 +	ath_hal_intrset(sc->sc_ah, sc->sc_imask);
-+	ATH_ENABLE_INTR();
++	local_irq_restore(flags);
 +
  	netif_wake_queue(dev);
  
  	if (sc->sc_softled)
-@@ -7985,6 +8044,7 @@
+@@ -8319,7 +8449,9 @@ ath_tx_tasklet_q0123(TQUEUE_ARG data)
+ {
  	struct net_device *dev = (struct net_device *)data;
  	struct ath_softc *sc = dev->priv;
++	unsigned long flags;
  
 +process_tx_again:
  	/*
  	 * Process each active queue.
  	 */
-@@ -8005,6 +8065,16 @@
+@@ -8340,6 +8472,16 @@ ath_tx_tasklet_q0123(TQUEUE_ARG data)
  	if (sc->sc_uapsdq && txqactive(sc->sc_ah, sc->sc_uapsdq->axq_qnum))
  		ath_tx_processq(sc, sc->sc_uapsdq);
  
-+	ATH_DISABLE_INTR();
++	local_irq_save(flags);
 +	if (sc->sc_isr & HAL_INT_TX) {
 +		sc->sc_isr &= ~HAL_INT_TX;
-+		ATH_ENABLE_INTR();
++		local_irq_restore(flags);
 +		goto process_tx_again;
 +	}
 +	sc->sc_imask |= HAL_INT_TX;
 +	ath_hal_intrset(sc->sc_ah, sc->sc_imask);
-+	ATH_ENABLE_INTR();
++	local_irq_restore(flags);
 +
  	netif_wake_queue(dev);
  
  	if (sc->sc_softled)
-@@ -8022,6 +8092,7 @@
+@@ -8355,13 +8497,25 @@ ath_tx_tasklet(TQUEUE_ARG data)
+ 	struct net_device *dev = (struct net_device *)data;
+ 	struct ath_softc *sc = dev->priv;
  	unsigned int i;
++	unsigned long flags;
  
- 	/* Process each active queue. */
+ 	/* Process each active queue. This includes sc_cabq, sc_xrtq and
+ 	 * sc_uapsdq */
 +process_tx_again:
  	for (i = 0; i < HAL_NUM_TX_QUEUES; i++)
  		if (ATH_TXQ_SETUP(sc, i) && txqactive(sc->sc_ah, i))
  			ath_tx_processq(sc, &sc->sc_txq[i]);
-@@ -8030,6 +8101,16 @@
- 		ath_tx_processq(sc, sc->sc_xrtxq);
- #endif
  
-+	ATH_DISABLE_INTR();
++	local_irq_save(flags);
 +	if (sc->sc_isr & HAL_INT_TX) {
 +		sc->sc_isr &= ~HAL_INT_TX;
-+		ATH_ENABLE_INTR();
++		local_irq_restore(flags);
 +		goto process_tx_again;
 +	}
 +	sc->sc_imask |= HAL_INT_TX;
 +	ath_hal_intrset(sc->sc_ah, sc->sc_imask);
-+	ATH_ENABLE_INTR();
++	local_irq_restore(flags);
 +
  	netif_wake_queue(dev);
  
  	if (sc->sc_softled)
-@@ -8101,6 +8182,7 @@
- ath_draintxq(struct ath_softc *sc)
- {
- 	struct ath_hal *ah = sc->sc_ah;
-+	int npend = 0;
- 	unsigned int i;
- 
- 	/* XXX return value */
-@@ -9675,9 +9757,9 @@
+@@ -10296,9 +10450,9 @@ ath_change_mtu(struct net_device *dev, i
  	dev->mtu = mtu;
  	if ((dev->flags & IFF_RUNNING) && !sc->sc_invalid) {
  		/* NB: the rx buffers may need to be reallocated */
 -		tasklet_disable(&sc->sc_rxtq);
-+		netif_poll_disable(dev);
++		ath_poll_disable(dev);
  		error = ath_reset(dev);
 -		tasklet_enable(&sc->sc_rxtq);
-+		netif_poll_enable(dev);
++		ath_poll_enable(dev);
  	}
  	ATH_UNLOCK(sc);
  
-Index: madwifi-ng-r2978-20071127/ath/if_athvar.h
-===================================================================
---- madwifi-ng-r2978-20071127.orig/ath/if_athvar.h	2007-11-27 21:43:39.616990105 +0100
-+++ madwifi-ng-r2978-20071127/ath/if_athvar.h	2007-11-27 21:48:18.536884841 +0100
-@@ -50,6 +50,10 @@
- #include <asm/io.h>
- #include <linux/list.h>
+--- a/ath/if_athvar.h
++++ b/ath/if_athvar.h
+@@ -53,6 +53,10 @@
+ # include	<asm/bitops.h>
+ #endif
  
 +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
 +#define irqs_disabled()			0
@@ -278,7 +391,17 @@ Index: madwifi-ng-r2978-20071127/ath/if_athvar.h
  /*
   * Deduce if tasklets are available.  If not then
   * fall back to using the immediate work queue.
-@@ -699,7 +703,6 @@
+@@ -616,6 +620,9 @@ struct ath_rp {
+ struct ath_softc {
+ 	struct ieee80211com sc_ic;		/* NB: must be first */
+ 	struct net_device *sc_dev;
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
++	struct napi_struct sc_napi;
++#endif
+ 	void __iomem *sc_iobase;		/* address of the device */
+ 	struct semaphore sc_lock;		/* dev-level lock */
+ 	struct net_device_stats	sc_devstats;	/* device statistics */
+@@ -730,7 +737,6 @@ struct ath_softc {
  	struct ath_buf *sc_rxbufcur;		/* current rx buffer */
  	u_int32_t *sc_rxlink;			/* link ptr in last RX desc */
  	spinlock_t sc_rxbuflock;
@@ -286,7 +409,7 @@ Index: madwifi-ng-r2978-20071127/ath/if_athvar.h
  	struct ATH_TQ_STRUCT sc_rxorntq;	/* rxorn intr tasklet */
  	u_int8_t sc_defant;			/* current default antenna */
  	u_int8_t sc_rxotherant;			/* RXs on non-default antenna */
-@@ -712,6 +715,7 @@
+@@ -745,6 +751,7 @@ struct ath_softc {
  	u_int sc_txintrperiod;			/* tx interrupt batching */
  	struct ath_txq sc_txq[HAL_NUM_TX_QUEUES];
  	struct ath_txq *sc_ac2q[WME_NUM_AC];	/* WME AC -> h/w qnum */
@@ -294,7 +417,7 @@ Index: madwifi-ng-r2978-20071127/ath/if_athvar.h
  	struct ATH_TQ_STRUCT sc_txtq;		/* tx intr tasklet */
  	u_int8_t sc_grppoll_str[GRPPOLL_RATE_STR_LEN];
  	struct ath_descdma sc_bdma;		/* beacon descriptors */
-@@ -800,6 +804,8 @@
+@@ -858,6 +865,8 @@ typedef void (*ath_callback) (struct ath
  #define	ATH_TXBUF_LOCK_CHECK(_sc)
  #endif
  
@@ -303,51 +426,111 @@ Index: madwifi-ng-r2978-20071127/ath/if_athvar.h
  
  #define	ATH_RXBUF_LOCK_INIT(_sc)	spin_lock_init(&(_sc)->sc_rxbuflock)
  #define	ATH_RXBUF_LOCK_DESTROY(_sc)
-Index: madwifi-ng-r2978-20071127/net80211/ieee80211_input.c
-===================================================================
---- madwifi-ng-r2978-20071127.orig/net80211/ieee80211_input.c	2007-11-27 21:18:30.038964155 +0100
-+++ madwifi-ng-r2978-20071127/net80211/ieee80211_input.c	2007-11-27 21:50:39.616924535 +0100
-@@ -1173,7 +1173,7 @@
+--- a/net80211/ieee80211_input.c
++++ b/net80211/ieee80211_input.c
+@@ -1198,7 +1198,7 @@ ieee80211_deliver_data(struct ieee80211_
  			/* attach vlan tag */
  			struct ieee80211_node *ni_tmp = SKB_CB(skb)->ni;
  			if (vlan_hwaccel_receive_skb(skb, vap->iv_vlgrp, ni->ni_vlan) == NET_RX_DROP) {
 -				/* If netif_rx dropped the packet because 
-+				/* If netif_receive_skb dropped the packet because 
++				/* If netif_receive_skb dropped the packet because
  				 * device was too busy */
  				if (ni_tmp != NULL) {
  					/* node reference was leaked */
-@@ -1184,8 +1184,8 @@
+@@ -1209,8 +1209,8 @@ ieee80211_deliver_data(struct ieee80211_
  			skb = NULL; /* SKB is no longer ours */
  		} else {
  			struct ieee80211_node *ni_tmp = SKB_CB(skb)->ni;
 -			if (netif_rx(skb) == NET_RX_DROP) {
 -				/* If netif_rx dropped the packet because 
 +			if (netif_receive_skb(skb) == NET_RX_DROP) {
-+				/* If netif_receive_skb dropped the packet because 
++				/* If netif_receive_skb dropped the packet because
  				 * device was too busy */
  				if (ni_tmp != NULL) {
  					/* node reference was leaked */
-@@ -2294,8 +2294,8 @@
+@@ -2322,8 +2322,8 @@ forward_mgmt_to_app(struct ieee80211vap
  		skb1->protocol = __constant_htons(0x0019);  /* ETH_P_80211_RAW */
  
  		ni_tmp = SKB_CB(skb1)->ni;
 -		if (netif_rx(skb1) == NET_RX_DROP) {
 -			/* If netif_rx dropped the packet because 
 +		if (netif_receive_skb(skb1) == NET_RX_DROP) {
-+			/* If netif_receive_skb dropped the packet because 
++			/* If netif_receive_skb dropped the packet because
  			 * device was too busy */
  			if (ni_tmp != NULL) {
  				/* node reference was leaked */
-Index: madwifi-ng-r2978-20071127/net80211/ieee80211_monitor.c
-===================================================================
---- madwifi-ng-r2978-20071127.orig/net80211/ieee80211_monitor.c	2007-11-22 03:08:35.000000000 +0100
-+++ madwifi-ng-r2978-20071127/net80211/ieee80211_monitor.c	2007-11-27 21:49:58.518582476 +0100
-@@ -568,7 +568,7 @@
- 			skb1->protocol = __constant_htons(0x0019); /* ETH_P_80211_RAW */
+--- a/net80211/ieee80211_monitor.c
++++ b/net80211/ieee80211_monitor.c
+@@ -584,8 +584,8 @@ ieee80211_input_monitor(struct ieee80211
+ 			skb1->protocol = 
+ 				__constant_htons(0x0019); /* ETH_P_80211_RAW */
  
- 			ni_tmp = SKB_CB(skb1)->ni;
 -			if (netif_rx(skb1) == NET_RX_DROP) {
+-				/* If netif_rx dropped the packet because 
 +			if (netif_receive_skb(skb1) == NET_RX_DROP) {
- 				/* If netif_rx dropped the packet because 
- 				 * device was too busy */
- 				if (ni_tmp != NULL) {
++				/* If netif_receive_skb dropped the packet because
+ 				 * device was too busy, reclaim the ref. in 
+ 				 * the skb. */
+ 				if (SKB_CB(skb1)->ni != NULL)
+--- a/net80211/ieee80211_skb.c
++++ b/net80211/ieee80211_skb.c
+@@ -73,7 +73,7 @@
+ #undef dev_queue_xmit
+ #undef kfree_skb
+ #undef kfree_skb_fast
+-#undef netif_rx
++#undef netif_receive_skb
+ #undef pskb_copy
+ #undef skb_clone
+ #undef skb_copy
+@@ -638,8 +638,8 @@ int  vlan_hwaccel_receive_skb_debug(stru
+ 		grp, vlan_tag);
+ }
+ 
+-int netif_rx_debug(struct sk_buff *skb, const char* func, int line) {
+-	return netif_rx(untrack_skb(skb, 0, func, line, __func__, __LINE__));
++int netif_receive_skb_debug(struct sk_buff *skb, const char* func, int line) {
++	return netif_receive_skb(untrack_skb(skb, 0, func, line, __func__, __LINE__));
+ }
+ 
+ struct sk_buff * alloc_skb_debug(unsigned int length, gfp_t gfp_mask,
+@@ -760,7 +760,7 @@ struct sk_buff * skb_copy_expand_debug(c
+ }
+ 
+ EXPORT_SYMBOL(vlan_hwaccel_receive_skb_debug);
+-EXPORT_SYMBOL(netif_rx_debug);
++EXPORT_SYMBOL(netif_receive_skb_debug);
+ EXPORT_SYMBOL(alloc_skb_debug);
+ EXPORT_SYMBOL(dev_alloc_skb_debug);
+ EXPORT_SYMBOL(skb_clone_debug);
+--- a/net80211/ieee80211_skb.h
++++ b/net80211/ieee80211_skb.h
+@@ -116,7 +116,7 @@ int ieee80211_skb_references(void);
+ int  vlan_hwaccel_receive_skb_debug(struct sk_buff *skb, 
+ 				    struct vlan_group *grp, unsigned short vlan_tag, 
+ 				    const char* func, int line);
+-int netif_rx_debug(struct sk_buff *skb, const char* func, int line);
++int netif_receive_skb_debug(struct sk_buff *skb, const char* func, int line);
+ struct sk_buff * alloc_skb_debug(unsigned int length, gfp_t gfp_mask,
+ 				 const char *func, int line);
+ struct sk_buff * dev_alloc_skb_debug(unsigned int length,
+@@ -151,7 +151,7 @@ struct sk_buff * skb_copy_expand_debug(c
+ #undef dev_queue_xmit
+ #undef kfree_skb
+ #undef kfree_skb_fast
+-#undef netif_rx
++#undef netif_receive_skb
+ #undef pskb_copy
+ #undef skb_clone
+ #undef skb_copy
+@@ -168,8 +168,8 @@ struct sk_buff * skb_copy_expand_debug(c
+ 	skb_copy_expand_debug(_skb, _newheadroom, _newtailroom, _gfp_mask, __func__, __LINE__)
+ #define vlan_hwaccel_receive_skb(_skb, _grp, _tag) \
+ 	vlan_hwaccel_receive_skb_debug(_skb, _grp, _tag, __func__, __LINE__)
+-#define netif_rx(_skb) \
+-	netif_rx_debug(_skb, __func__, __LINE__)
++#define netif_receive_skb(_skb) \
++	netif_receive_skb_debug(_skb, __func__, __LINE__)
+ #define	alloc_skb(_length, _gfp_mask) \
+ 	alloc_skb_debug(_length, _gfp_mask, __func__, __LINE__)
+ #define	dev_alloc_skb(_length) \