diff options
Diffstat (limited to 'package/madwifi/patches-r3776/300-napi_polling.patch')
-rw-r--r-- | package/madwifi/patches-r3776/300-napi_polling.patch | 538 |
1 files changed, 538 insertions, 0 deletions
diff --git a/package/madwifi/patches-r3776/300-napi_polling.patch b/package/madwifi/patches-r3776/300-napi_polling.patch new file mode 100644 index 0000000..e7e5bfd --- /dev/null +++ b/package/madwifi/patches-r3776/300-napi_polling.patch @@ -0,0 +1,538 @@ +Index: madwifi-trunk-r3776/ath/if_ath.c +=================================================================== +--- madwifi-trunk-r3776.orig/ath/if_ath.c 2008-07-17 01:20:11.000000000 +0200 ++++ madwifi-trunk-r3776/ath/if_ath.c 2008-07-17 01:46:37.000000000 +0200 +@@ -182,7 +182,11 @@ + 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 +@@ -331,6 +335,9 @@ + static u_int32_t ath_set_clamped_maxtxpower(struct ath_softc *sc, + u_int32_t new_clamped_maxtxpower); + ++static void ath_poll_disable(struct net_device *dev); ++static void ath_poll_enable(struct net_device *dev); ++ + static void ath_scanbufs(struct ath_softc *sc); + static int ath_debug_iwpriv(struct ieee80211com *ic, + unsigned int param, unsigned int value); +@@ -518,7 +525,6 @@ + + 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); +@@ -833,6 +839,12 @@ + dev->set_mac_address = ath_set_mac_address; + dev->change_mtu = ath_change_mtu; + 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) + +@@ -1770,7 +1782,7 @@ + } + + static void +-ath_intr_process_rx_descriptors(struct ath_softc *sc, int *pneedmark, u_int64_t hw_tsf) ++ath_intr_process_rx_descriptors(struct ath_softc *sc, int *pneedmark, u_int64_t hw_tsf, int schedule) + { + struct ath_hal *ah = sc->sc_ah; + struct ath_desc *ds; +@@ -2252,8 +2264,25 @@ + } + + /* If we got something to process, schedule rx queue to handle it */ +- if (count) +- ATH_SCHEDULE_TQUEUE(&sc->sc_rxtq, pneedmark); ++ if (count) { ++ sc->sc_isr &= ~HAL_INT_RX; ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24) ++ if (netif_rx_schedule_prep(sc->sc_dev, &sc->sc_napi)) ++#else ++ if (netif_rx_schedule_prep(sc->sc_dev)) ++#endif ++ { ++#ifndef ATH_PRECISE_TSF ++ 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(sc->sc_dev, &sc->sc_napi); ++#else ++ __netif_rx_schedule(sc->sc_dev); ++#endif ++ } ++ } + ATH_RXBUF_UNLOCK_IRQ(sc); + #undef PA2DESC + } +@@ -2343,6 +2372,7 @@ + (status & HAL_INT_GLOBAL) ? " HAL_INT_GLOBAL" : "" + ); + ++ sc->sc_isr = status; + status &= sc->sc_imask; /* discard unasked for bits */ + /* 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. +@@ -2400,7 +2430,7 @@ + } + if (status & (HAL_INT_RX | HAL_INT_RXPHY)) { + /* NB: Will schedule rx tasklet if necessary. */ +- ath_intr_process_rx_descriptors(sc, &needmark, hw_tsf); ++ ath_intr_process_rx_descriptors(sc, &needmark, hw_tsf, 1); + } + if (status & HAL_INT_TX) { + #ifdef ATH_SUPERG_DYNTURBO +@@ -2426,6 +2456,11 @@ + } + } + #endif ++ /* disable transmit interrupt */ ++ sc->sc_isr &= ~HAL_INT_TX; ++ ath_hal_intrset(ah, sc->sc_imask & ~HAL_INT_TX); ++ sc->sc_imask &= ~HAL_INT_TX; ++ + ATH_SCHEDULE_TQUEUE(&sc->sc_txtq, &needmark); + } + if (status & HAL_INT_BMISS) { +@@ -2617,6 +2652,7 @@ + if (sc->sc_tx99 != NULL) + sc->sc_tx99->start(sc->sc_tx99); + #endif ++ ath_poll_enable(dev); + + done: + ATH_UNLOCK(sc); +@@ -2657,6 +2693,9 @@ + 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 */ +@@ -4109,6 +4148,39 @@ + 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 +@@ -4119,33 +4191,26 @@ + ath_key_update_begin(struct ieee80211vap *vap) + { + struct net_device *dev = vap->iv_ic->ic_dev; +- struct ath_softc *sc = dev->priv; + + DPRINTF(sc, ATH_DEBUG_KEYCACHE, "Begin\n"); + /* + * 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()) +- tasklet_disable(&sc->sc_rxtq); +- netif_stop_queue(dev); ++ if ((dev->flags & (IFF_UP|IFF_RUNNING)) == (IFF_UP|IFF_RUNNING)) ++ netif_stop_queue(dev); + } + + static void + ath_key_update_end(struct ieee80211vap *vap) + { + struct net_device *dev = vap->iv_ic->ic_dev; +- struct ath_softc *sc = dev->priv; + + DPRINTF(sc, ATH_DEBUG_KEYCACHE, "End\n"); +- netif_wake_queue(dev); +- if (!in_softirq()) /* NB: see above */ +- tasklet_enable(&sc->sc_rxtq); ++ ++ if ((dev->flags & (IFF_UP|IFF_RUNNING)) == (IFF_UP|IFF_RUNNING)) ++ netif_wake_queue(dev); + } + + /* +@@ -6405,15 +6470,25 @@ + sc->sc_numrxotherant = 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; ++#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; + struct ath_hal *ah = sc ? sc->sc_ah : NULL; + struct ath_desc *ds; +@@ -6421,6 +6496,7 @@ + struct ieee80211_node *ni; + struct sk_buff *skb = NULL; + unsigned int len, phyerr, mic_fail = 0; ++ unsigned int early_stop = 0; + int type = -1; /* undefined */ + int init_ret = 0; + int bf_processed = 0; +@@ -6428,6 +6504,7 @@ + int errors = 0; + + DPRINTF(sc, ATH_DEBUG_RX_PROC, "%s started...\n", __func__); ++process_rx_again: + do { + /* Get next RX buffer pending processing by RX tasklet... + * +@@ -6457,6 +6534,10 @@ + break; + + bf_processed++; ++ if (rx_limit-- < 0) { ++ early_stop = 1; ++ break; ++ } + ds = bf->bf_desc; + + #ifdef AR_DEBUG +@@ -6491,6 +6572,7 @@ + sc->sc_stats.ast_rx_phyerr++; + phyerr = rs->rs_phyerr & 0x1f; + sc->sc_stats.ast_rx_phy[phyerr]++; ++ goto rx_next; + } + if (rs->rs_status & HAL_RXERR_DECRYPT) { + /* Decrypt error. If the error occurred +@@ -6689,6 +6771,33 @@ + STAILQ_INSERT_TAIL(&sc->sc_rxbuf, bf, bf_list); + ATH_RXBUF_UNLOCK_IRQ(sc); + } while (1); ++ if (!early_stop) { ++ unsigned long flags; ++ /* Check if more data is received while we were ++ * processing the descriptor chain. ++ */ ++#ifndef ATH_PRECISE_TSF ++ 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; ++ local_irq_restore(flags); ++ ath_intr_process_rx_descriptors(sc, NULL, hw_tsf, 0); ++ goto process_rx_again; ++ } ++ sc->sc_imask |= HAL_INT_RX; ++ ath_hal_intrset(ah, sc->sc_imask); ++ local_irq_restore(flags); ++#endif ++ } ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24) ++ netif_rx_complete(dev, napi); ++#else ++ netif_rx_complete(dev); ++ *budget -= bf_processed; ++ dev->quota -= bf_processed; ++#endif + + if (sc->sc_useintmit) + ath_hal_rxmonitor(ah, &sc->sc_halstats, &sc->sc_curchan); +@@ -6701,6 +6810,12 @@ + " %d rx buf processed. %d were errors. %d skb accepted.\n", + __func__, bf_processed, errors, skb_accepted); + #undef PA2DESC ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24) ++ return bf_processed; ++#else ++ return early_stop; ++#endif + } + + #ifdef ATH_SUPERG_XR +@@ -8306,12 +8421,24 @@ + { + 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)) + ath_tx_processq(sc, &sc->sc_txq[0]); + if (txqactive(sc->sc_ah, sc->sc_cabq->axq_qnum)) + ath_tx_processq(sc, sc->sc_cabq); + ++ local_irq_save(flags); ++ if (sc->sc_isr & HAL_INT_TX) { ++ sc->sc_isr &= ~HAL_INT_TX; ++ local_irq_restore(flags); ++ goto process_tx_again; ++ } ++ sc->sc_imask |= HAL_INT_TX; ++ ath_hal_intrset(sc->sc_ah, sc->sc_imask); ++ local_irq_restore(flags); ++ + netif_wake_queue(dev); + + if (sc->sc_softled) +@@ -8327,7 +8454,9 @@ + { + struct net_device *dev = (struct net_device *)data; + struct ath_softc *sc = dev->priv; ++ unsigned long flags; + ++process_tx_again: + /* + * Process each active queue. + */ +@@ -8357,6 +8486,16 @@ + if (sc->sc_uapsdq && txqactive(sc->sc_ah, sc->sc_uapsdq->axq_qnum)) + ath_tx_processq(sc, sc->sc_uapsdq); + ++ local_irq_save(flags); ++ if (sc->sc_isr & HAL_INT_TX) { ++ sc->sc_isr &= ~HAL_INT_TX; ++ local_irq_restore(flags); ++ goto process_tx_again; ++ } ++ sc->sc_imask |= HAL_INT_TX; ++ ath_hal_intrset(sc->sc_ah, sc->sc_imask); ++ local_irq_restore(flags); ++ + netif_wake_queue(dev); + + if (sc->sc_softled) +@@ -10322,9 +10461,9 @@ + 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); ++ ath_poll_disable(dev); + error = ath_reset(dev); +- tasklet_enable(&sc->sc_rxtq); ++ ath_poll_enable(dev); + } + ATH_UNLOCK(sc); + +Index: madwifi-trunk-r3776/ath/if_athvar.h +=================================================================== +--- madwifi-trunk-r3776.orig/ath/if_athvar.h 2008-07-17 00:52:28.000000000 +0200 ++++ madwifi-trunk-r3776/ath/if_athvar.h 2008-07-17 01:27:21.000000000 +0200 +@@ -56,6 +56,10 @@ + # include <asm/bitops.h> + #endif + ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) ++#define irqs_disabled() 0 ++#endif ++ + /* + * Deduce if tasklets are available. If not then + * fall back to using the immediate work queue. +@@ -644,6 +648,9 @@ + 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 */ +@@ -756,7 +763,6 @@ + struct ath_buf *sc_rxbufcur; /* current rx buffer */ + u_int32_t *sc_rxlink; /* link ptr in last RX desc */ + spinlock_t sc_rxbuflock; +- struct ATH_TQ_STRUCT sc_rxtq; /* rx intr tasklet */ + struct ATH_TQ_STRUCT sc_rxorntq; /* rxorn intr tasklet */ + u_int16_t sc_cachelsz; /* cache line size */ + +@@ -769,6 +775,7 @@ + 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 */ ++ HAL_INT sc_isr; /* unmasked ISR state */ + 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 */ +@@ -888,6 +895,8 @@ + #define ATH_TXBUF_LOCK_CHECK(_sc) + #endif + ++#define ATH_DISABLE_INTR local_irq_disable ++#define ATH_ENABLE_INTR local_irq_enable + + #define ATH_RXBUF_LOCK_INIT(_sc) spin_lock_init(&(_sc)->sc_rxbuflock) + #define ATH_RXBUF_LOCK_DESTROY(_sc) +Index: madwifi-trunk-r3776/net80211/ieee80211_skb.c +=================================================================== +--- madwifi-trunk-r3776.orig/net80211/ieee80211_skb.c 2008-07-17 00:21:29.000000000 +0200 ++++ madwifi-trunk-r3776/net80211/ieee80211_skb.c 2008-07-17 01:42:17.000000000 +0200 +@@ -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 +@@ -581,8 +581,8 @@ + 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__)); ++int netif_receive_skb_debug(struct sk_buff *skb, const char *func, int line) { ++ return netif_receive_skb(untrack_skb(skb, 0, __func__, __LINE__)); + } + + struct sk_buff *alloc_skb_debug(unsigned int length, gfp_t gfp_mask, +@@ -707,7 +707,7 @@ + } + + EXPORT_SYMBOL(vlan_hwaccel_rx_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); +Index: madwifi-trunk-r3776/net80211/ieee80211_skb.h +=================================================================== +--- madwifi-trunk-r3776.orig/net80211/ieee80211_skb.h 2008-07-17 00:21:29.000000000 +0200 ++++ madwifi-trunk-r3776/net80211/ieee80211_skb.h 2008-07-17 01:42:43.000000000 +0200 +@@ -115,7 +115,7 @@ + + int vlan_hwaccel_rx_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, +@@ -150,7 +150,7 @@ + #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 +@@ -167,8 +167,8 @@ + skb_copy_expand_debug(_skb, _newheadroom, _newtailroom, _gfp_mask, __func__, __LINE__) + #define vlan_hwaccel_rx(_skb, _grp, _tag) \ + vlan_hwaccel_rx_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) \ +Index: madwifi-trunk-r3776/net80211/ieee80211_input.c +=================================================================== +--- madwifi-trunk-r3776.orig/net80211/ieee80211_input.c 2008-07-17 00:21:29.000000000 +0200 ++++ madwifi-trunk-r3776/net80211/ieee80211_input.c 2008-07-17 01:41:16.000000000 +0200 +@@ -1185,7 +1185,7 @@ + ret = vlan_hwaccel_rx(skb, + vap->iv_vlgrp, ni->ni_vlan); + else +- ret = netif_rx(skb); ++ ret = netif_receive_skb(skb); + if (ret == NET_RX_DROP) + vap->iv_devstats.rx_dropped++; + if (tni != NULL) +@@ -2285,7 +2285,7 @@ + + if (SKB_NI(skb1) != NULL) + ieee80211_unref_node(&SKB_NI(skb1)); +- if (netif_rx(skb1) == NET_RX_DROP) ++ if (netif_receive_skb(skb1) == NET_RX_DROP) + vap->iv_devstats.rx_dropped++; + } + } +Index: madwifi-trunk-r3776/net80211/ieee80211_monitor.c +=================================================================== +--- madwifi-trunk-r3776.orig/net80211/ieee80211_monitor.c 2008-07-17 00:21:29.000000000 +0200 ++++ madwifi-trunk-r3776/net80211/ieee80211_monitor.c 2008-07-17 01:41:51.000000000 +0200 +@@ -580,7 +580,7 @@ + + if (SKB_NI(skb1) != NULL) + ieee80211_unref_node(&SKB_NI(skb1)); +- if (netif_rx(skb1) == NET_RX_DROP) ++ if (netif_receive_skb(skb1) == NET_RX_DROP) + vap->iv_devstats.rx_dropped++; + skb1 = NULL; + } |