Date: Wed, 16 Jun 2010 16:37:36 +0000 (UTC) From: Jack F Vogel <jfv@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r209238 - head/sys/dev/e1000 Message-ID: <201006161637.o5GGbaai055120@svn.freebsd.org>
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Author: jfv Date: Wed Jun 16 16:37:36 2010 New Revision: 209238 URL: http://svn.freebsd.org/changeset/base/209238 Log: Changes from John Baldwin adding to last commit, change rxeof api for poll friendliness, and eliminate unnecessary link tasklet use. Thanks John! Modified: head/sys/dev/e1000/if_em.c head/sys/dev/e1000/if_igb.c head/sys/dev/e1000/if_igb.h head/sys/dev/e1000/if_lem.c Modified: head/sys/dev/e1000/if_em.c ============================================================================== --- head/sys/dev/e1000/if_em.c Wed Jun 16 16:02:17 2010 (r209237) +++ head/sys/dev/e1000/if_em.c Wed Jun 16 16:37:36 2010 (r209238) @@ -231,7 +231,7 @@ static void em_enable_intr(struct adapte static void em_disable_intr(struct adapter *); static void em_update_stats_counters(struct adapter *); static bool em_txeof(struct tx_ring *); -static int em_rxeof(struct rx_ring *, int); +static bool em_rxeof(struct rx_ring *, int, int *); #ifndef __NO_STRICT_ALIGNMENT static int em_fixup_rx(struct rx_ring *); #endif @@ -1356,12 +1356,13 @@ em_poll(struct ifnet *ifp, enum poll_cmd struct adapter *adapter = ifp->if_softc; struct tx_ring *txr = adapter->tx_rings; struct rx_ring *rxr = adapter->rx_rings; - u32 reg_icr, rx_done = 0; + u32 reg_icr; + int rx_done; EM_CORE_LOCK(adapter); if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { EM_CORE_UNLOCK(adapter); - return (rx_done); + return (0); } if (cmd == POLL_AND_CHECK_STATUS) { @@ -1376,7 +1377,7 @@ em_poll(struct ifnet *ifp, enum poll_cmd } EM_CORE_UNLOCK(adapter); - rx_done = em_rxeof(rxr, count); + em_rxeof(rxr, count, &rx_done); EM_TX_LOCK(txr); em_txeof(txr); @@ -1448,14 +1449,15 @@ em_handle_que(void *context, int pending struct ifnet *ifp = adapter->ifp; struct tx_ring *txr = adapter->tx_rings; struct rx_ring *rxr = adapter->rx_rings; - bool more_rx; + bool more; if (ifp->if_drv_flags & IFF_DRV_RUNNING) { - more_rx = em_rxeof(rxr, adapter->rx_process_limit); + more = em_rxeof(rxr, adapter->rx_process_limit, NULL); EM_TX_LOCK(txr); - em_txeof(txr); + if (em_txeof(txr)) + more = TRUE; #ifdef EM_MULTIQUEUE if (!drbr_empty(ifp, txr->br)) em_mq_start_locked(ifp, txr, NULL); @@ -1464,7 +1466,7 @@ em_handle_que(void *context, int pending em_start_locked(ifp, txr); #endif EM_TX_UNLOCK(txr); - if (more_rx) { + if (more) { taskqueue_enqueue(adapter->tq, &adapter->que_task); return; } @@ -1513,7 +1515,7 @@ em_msix_rx(void *arg) bool more; ++rxr->rx_irq; - more = em_rxeof(rxr, adapter->rx_process_limit); + more = em_rxeof(rxr, adapter->rx_process_limit, NULL); if (more) taskqueue_enqueue(rxr->tq, &rxr->rx_task); else @@ -1538,7 +1540,7 @@ em_msix_link(void *arg) if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { adapter->hw.mac.get_link_status = 1; - taskqueue_enqueue(taskqueue_fast, &adapter->link_task); + em_handle_link(adapter, 0); } else E1000_WRITE_REG(&adapter->hw, E1000_IMS, EM_MSIX_LINK | E1000_IMS_LSC); @@ -1552,7 +1554,7 @@ em_handle_rx(void *context, int pending) struct adapter *adapter = rxr->adapter; bool more; - more = em_rxeof(rxr, adapter->rx_process_limit); + more = em_rxeof(rxr, adapter->rx_process_limit, NULL); if (more) taskqueue_enqueue(rxr->tq, &rxr->rx_task); else @@ -2428,11 +2430,6 @@ em_allocate_msix(struct adapter *adapter adapter->linkvec = vector; adapter->ivars |= (8 | vector) << 16; adapter->ivars |= 0x80000000; - TASK_INIT(&adapter->link_task, 0, em_handle_link, adapter); - adapter->tq = taskqueue_create_fast("em_link", M_NOWAIT, - taskqueue_thread_enqueue, &adapter->tq); - taskqueue_start_threads(&adapter->tq, 1, PI_NET, "%s linkq", - device_get_nameunit(adapter->dev)); return (0); } @@ -4087,8 +4084,8 @@ em_initialize_receive_unit(struct adapte * * For polling we also now return the number of cleaned packets *********************************************************************/ -static int -em_rxeof(struct rx_ring *rxr, int count) +static bool +em_rxeof(struct rx_ring *rxr, int count, int *done) { struct adapter *adapter = rxr->adapter; struct ifnet *ifp = adapter->ifp; @@ -4215,13 +4212,11 @@ skip: } rxr->next_to_check = i; + if (done != NULL) + *done = rxdone; EM_RX_UNLOCK(rxr); -#ifdef DEVICE_POLLING - return (rxdone); -#else return ((status & E1000_RXD_STAT_DD) ? TRUE : FALSE); -#endif } #ifndef __NO_STRICT_ALIGNMENT Modified: head/sys/dev/e1000/if_igb.c ============================================================================== --- head/sys/dev/e1000/if_igb.c Wed Jun 16 16:02:17 2010 (r209237) +++ head/sys/dev/e1000/if_igb.c Wed Jun 16 16:37:36 2010 (r209238) @@ -205,7 +205,7 @@ static __inline void igb_rx_discard(stru static __inline void igb_rx_input(struct rx_ring *, struct ifnet *, struct mbuf *, u32); -static bool igb_rxeof(struct igb_queue *, int); +static bool igb_rxeof(struct igb_queue *, int, int *); static void igb_rx_checksum(u32, struct mbuf *, u32); static int igb_tx_ctx_setup(struct tx_ring *, struct mbuf *); static bool igb_tso_setup(struct tx_ring *, struct mbuf *, u32 *); @@ -1234,13 +1234,15 @@ igb_handle_que(void *context, int pendin struct adapter *adapter = que->adapter; struct tx_ring *txr = que->txr; struct ifnet *ifp = adapter->ifp; - bool more; if (ifp->if_drv_flags & IFF_DRV_RUNNING) { - more = igb_rxeof(que, -1); + bool more; + + more = igb_rxeof(que, -1, NULL); IGB_TX_LOCK(txr); - igb_txeof(txr); + if (igb_txeof(txr)) + more = TRUE; #if __FreeBSD_version >= 800000 if (!drbr_empty(ifp, txr->br)) igb_mq_start_locked(ifp, txr, NULL); @@ -1353,15 +1355,14 @@ igb_poll(struct ifnet *ifp, enum poll_cm reg_icr = E1000_READ_REG(&adapter->hw, E1000_ICR); /* Link status change */ if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) - taskqueue_enqueue(que->tq, &adapter->link_task); + igb_handle_link(adapter, 0); if (reg_icr & E1000_ICR_RXO) adapter->rx_overruns++; } IGB_CORE_UNLOCK(adapter); - /* TODO: rx_count */ - rx_done = igb_rxeof(que, count) ? 1 : 0; + igb_rxeof(que, count, &rx_done); IGB_TX_LOCK(txr); do { @@ -1401,7 +1402,7 @@ igb_msix_que(void *arg) more_tx = igb_txeof(txr); IGB_TX_UNLOCK(txr); - more_rx = igb_rxeof(que, adapter->rx_process_limit); + more_rx = igb_rxeof(que, adapter->rx_process_limit, NULL); if (igb_enable_aim == FALSE) goto no_calc; @@ -1481,7 +1482,7 @@ igb_msix_link(void *arg) icr = E1000_READ_REG(&adapter->hw, E1000_ICR); if (!(icr & E1000_ICR_LSC)) goto spurious; - taskqueue_enqueue(adapter->tq, &adapter->link_task); + igb_handle_link(adapter, 0); spurious: /* Rearm */ @@ -2212,13 +2213,6 @@ igb_allocate_msix(struct adapter *adapte #endif adapter->linkvec = vector; - /* Make tasklet for deferred handling */ - TASK_INIT(&adapter->link_task, 0, igb_handle_link, adapter); - adapter->tq = taskqueue_create_fast("igb_link", M_NOWAIT, - taskqueue_thread_enqueue, &adapter->tq); - taskqueue_start_threads(&adapter->tq, 1, PI_NET, "%s link", - device_get_nameunit(adapter->dev)); - return (0); } @@ -4199,14 +4193,14 @@ igb_rx_input(struct rx_ring *rxr, struct * Return TRUE if more to clean, FALSE otherwise *********************************************************************/ static bool -igb_rxeof(struct igb_queue *que, int count) +igb_rxeof(struct igb_queue *que, int count, int *done) { struct adapter *adapter = que->adapter; struct rx_ring *rxr = que->rxr; struct ifnet *ifp = adapter->ifp; struct lro_ctrl *lro = &rxr->lro; struct lro_entry *queued; - int i, processed = 0; + int i, processed = 0, rxdone = 0; u32 ptype, staterr = 0; union e1000_adv_rx_desc *cur; @@ -4359,6 +4353,7 @@ next_desc: rxr->next_to_check = i; igb_rx_input(rxr, ifp, sendmp, ptype); i = rxr->next_to_check; + rxdone++; } /* Every 8 descriptors we go to refresh mbufs */ @@ -4386,6 +4381,9 @@ next_desc: IGB_RX_UNLOCK(rxr); + if (done != NULL) + *done = rxdone; + /* ** We still have cleaning to do? ** Schedule another interrupt if so. Modified: head/sys/dev/e1000/if_igb.h ============================================================================== --- head/sys/dev/e1000/if_igb.h Wed Jun 16 16:02:17 2010 (r209237) +++ head/sys/dev/e1000/if_igb.h Wed Jun 16 16:37:36 2010 (r209238) @@ -382,7 +382,6 @@ struct adapter { int min_frame_size; struct mtx core_mtx; int igb_insert_vlan_header; - struct taskqueue *tq; /* adapter task queue */ u16 num_queues; eventhandler_tag vlan_attach; Modified: head/sys/dev/e1000/if_lem.c ============================================================================== --- head/sys/dev/e1000/if_lem.c Wed Jun 16 16:02:17 2010 (r209237) +++ head/sys/dev/e1000/if_lem.c Wed Jun 16 16:37:36 2010 (r209238) @@ -200,7 +200,7 @@ static void lem_txeof(struct adapter *); static void lem_tx_purge(struct adapter *); static int lem_allocate_receive_structures(struct adapter *); static int lem_allocate_transmit_structures(struct adapter *); -static int lem_rxeof(struct adapter *, int); +static bool lem_rxeof(struct adapter *, int, int *); #ifndef __NO_STRICT_ALIGNMENT static int lem_fixup_rx(struct adapter *); #endif @@ -1255,7 +1255,7 @@ lem_poll(struct ifnet *ifp, enum poll_cm } EM_CORE_UNLOCK(adapter); - rx_done = lem_rxeof(adapter, count); + lem_rxeof(adapter, count, &rx_done); EM_TX_LOCK(adapter); lem_txeof(adapter); @@ -1308,7 +1308,7 @@ lem_intr(void *arg) EM_TX_LOCK(adapter); lem_txeof(adapter); - lem_rxeof(adapter, -1); + lem_rxeof(adapter, -1, NULL); lem_txeof(adapter); if (ifp->if_drv_flags & IFF_DRV_RUNNING && !IFQ_DRV_IS_EMPTY(&ifp->if_snd)) @@ -1350,7 +1350,7 @@ lem_handle_rxtx(void *context, int pendi if (ifp->if_drv_flags & IFF_DRV_RUNNING) { - if (lem_rxeof(adapter, adapter->rx_process_limit) != 0) + if (lem_rxeof(adapter, adapter->rx_process_limit, NULL) != 0) taskqueue_enqueue(adapter->tq, &adapter->rxtx_task); EM_TX_LOCK(adapter); lem_txeof(adapter); @@ -3449,8 +3449,8 @@ lem_free_receive_structures(struct adapt * * For polling we also now return the number of cleaned packets *********************************************************************/ -static int -lem_rxeof(struct adapter *adapter, int count) +static bool +lem_rxeof(struct adapter *adapter, int count, int *done) { struct ifnet *ifp = adapter->ifp;; struct mbuf *mp; @@ -3466,8 +3466,10 @@ lem_rxeof(struct adapter *adapter, int c BUS_DMASYNC_POSTREAD); if (!((current_desc->status) & E1000_RXD_STAT_DD)) { + if (done != NULL) + *done = rx_sent; EM_RX_UNLOCK(adapter); - return (rx_sent); + return (FALSE); } while ((current_desc->status & E1000_RXD_STAT_DD) && @@ -3626,8 +3628,10 @@ discard: if (--i < 0) i = adapter->num_rx_desc - 1; E1000_WRITE_REG(&adapter->hw, E1000_RDT(0), i); + if (done != NULL) + *done = rx_sent; EM_RX_UNLOCK(adapter); - return (rx_sent); + return (current_desc->status & E1000_RXD_STAT_DD); } #ifndef __NO_STRICT_ALIGNMENT
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