diff --git a/drivers/net/ethernet/cisco/enic/enic.h b/drivers/net/ethernet/cisco/enic/enic.h index b9b9178e174ef005895df63c61ee03e7a937d12e..c8aa9fb81d3c21eeac5c544ab19349f6574a98ba 100644 --- a/drivers/net/ethernet/cisco/enic/enic.h +++ b/drivers/net/ethernet/cisco/enic/enic.h @@ -178,7 +178,7 @@ struct enic { unsigned int rq_count; u64 rq_truncated_pkts; u64 rq_bad_fcs; - struct napi_struct napi[ENIC_RQ_MAX]; + struct napi_struct napi[ENIC_RQ_MAX + ENIC_WQ_MAX]; /* interrupt resource cache line section */ ____cacheline_aligned struct vnic_intr intr[ENIC_INTR_MAX]; diff --git a/drivers/net/ethernet/cisco/enic/enic_main.c b/drivers/net/ethernet/cisco/enic/enic_main.c index d4918eef5050063e48089fce70c2d078ceef5a1a..9348febc0743a477189ed36581e455a694b3d4d3 100644 --- a/drivers/net/ethernet/cisco/enic/enic_main.c +++ b/drivers/net/ethernet/cisco/enic/enic_main.c @@ -316,40 +316,15 @@ static irqreturn_t enic_isr_msi(int irq, void *data) return IRQ_HANDLED; } -static irqreturn_t enic_isr_msix_rq(int irq, void *data) +static irqreturn_t enic_isr_msix(int irq, void *data) { struct napi_struct *napi = data; - /* schedule NAPI polling for RQ cleanup */ napi_schedule(napi); return IRQ_HANDLED; } -static irqreturn_t enic_isr_msix_wq(int irq, void *data) -{ - struct enic *enic = data; - unsigned int cq; - unsigned int intr; - unsigned int wq_work_to_do = -1; /* no limit */ - unsigned int wq_work_done; - unsigned int wq_irq; - - wq_irq = (u32)irq - enic->msix_entry[enic_msix_wq_intr(enic, 0)].vector; - cq = enic_cq_wq(enic, wq_irq); - intr = enic_msix_wq_intr(enic, wq_irq); - - wq_work_done = vnic_cq_service(&enic->cq[cq], - wq_work_to_do, enic_wq_service, NULL); - - vnic_intr_return_credits(&enic->intr[intr], - wq_work_done, - 1 /* unmask intr */, - 1 /* reset intr timer */); - - return IRQ_HANDLED; -} - static irqreturn_t enic_isr_msix_err(int irq, void *data) { struct enic *enic = data; @@ -1274,7 +1249,36 @@ int enic_busy_poll(struct napi_struct *napi) } #endif /* CONFIG_NET_RX_BUSY_POLL */ -static int enic_poll_msix(struct napi_struct *napi, int budget) +static int enic_poll_msix_wq(struct napi_struct *napi, int budget) +{ + struct net_device *netdev = napi->dev; + struct enic *enic = netdev_priv(netdev); + unsigned int wq_index = (napi - &enic->napi[0]) - enic->rq_count; + struct vnic_wq *wq = &enic->wq[wq_index]; + unsigned int cq; + unsigned int intr; + unsigned int wq_work_to_do = -1; /* clean all desc possible */ + unsigned int wq_work_done; + unsigned int wq_irq; + + wq_irq = wq->index; + cq = enic_cq_wq(enic, wq_irq); + intr = enic_msix_wq_intr(enic, wq_irq); + wq_work_done = vnic_cq_service(&enic->cq[cq], wq_work_to_do, + enic_wq_service, NULL); + + vnic_intr_return_credits(&enic->intr[intr], wq_work_done, + 0 /* don't unmask intr */, + 1 /* reset intr timer */); + if (!wq_work_done) { + napi_complete(napi); + vnic_intr_unmask(&enic->intr[intr]); + } + + return 0; +} + +static int enic_poll_msix_rq(struct napi_struct *napi, int budget) { struct net_device *netdev = napi->dev; struct enic *enic = netdev_priv(netdev); @@ -1399,17 +1403,19 @@ static int enic_request_intr(struct enic *enic) snprintf(enic->msix[intr].devname, sizeof(enic->msix[intr].devname), "%.11s-rx-%d", netdev->name, i); - enic->msix[intr].isr = enic_isr_msix_rq; + enic->msix[intr].isr = enic_isr_msix; enic->msix[intr].devid = &enic->napi[i]; } for (i = 0; i < enic->wq_count; i++) { + int wq = enic_cq_wq(enic, i); + intr = enic_msix_wq_intr(enic, i); snprintf(enic->msix[intr].devname, sizeof(enic->msix[intr].devname), "%.11s-tx-%d", netdev->name, i); - enic->msix[intr].isr = enic_isr_msix_wq; - enic->msix[intr].devid = enic; + enic->msix[intr].isr = enic_isr_msix; + enic->msix[intr].devid = &enic->napi[wq]; } intr = enic_msix_err_intr(enic); @@ -1585,7 +1591,9 @@ static int enic_open(struct net_device *netdev) enic_busy_poll_init_lock(&enic->rq[i]); napi_enable(&enic->napi[i]); } - + if (vnic_dev_get_intr_mode(enic->vdev) == VNIC_DEV_INTR_MODE_MSIX) + for (i = 0; i < enic->wq_count; i++) + napi_enable(&enic->napi[enic_cq_wq(enic, i)]); enic_dev_enable(enic); for (i = 0; i < enic->intr_count; i++) @@ -1633,6 +1641,9 @@ static int enic_stop(struct net_device *netdev) netif_carrier_off(netdev); netif_tx_disable(netdev); + if (vnic_dev_get_intr_mode(enic->vdev) == VNIC_DEV_INTR_MODE_MSIX) + for (i = 0; i < enic->wq_count; i++) + napi_disable(&enic->napi[enic_cq_wq(enic, i)]); if (!enic_is_dynamic(enic) && !enic_is_sriov_vf(enic)) enic_dev_del_station_addr(enic); @@ -1752,13 +1763,14 @@ static void enic_poll_controller(struct net_device *netdev) case VNIC_DEV_INTR_MODE_MSIX: for (i = 0; i < enic->rq_count; i++) { intr = enic_msix_rq_intr(enic, i); - enic_isr_msix_rq(enic->msix_entry[intr].vector, - &enic->napi[i]); + enic_isr_msix(enic->msix_entry[intr].vector, + &enic->napi[i]); } for (i = 0; i < enic->wq_count; i++) { intr = enic_msix_wq_intr(enic, i); - enic_isr_msix_wq(enic->msix_entry[intr].vector, enic); + enic_isr_msix(enic->msix_entry[intr].vector, + &enic->napi[enic_cq_wq(enic, i)]); } break; @@ -2159,6 +2171,9 @@ static void enic_dev_deinit(struct enic *enic) napi_hash_del(&enic->napi[i]); netif_napi_del(&enic->napi[i]); } + if (vnic_dev_get_intr_mode(enic->vdev) == VNIC_DEV_INTR_MODE_MSIX) + for (i = 0; i < enic->wq_count; i++) + netif_napi_del(&enic->napi[enic_cq_wq(enic, i)]); enic_free_vnic_resources(enic); enic_clear_intr_mode(enic); @@ -2229,9 +2244,12 @@ static int enic_dev_init(struct enic *enic) case VNIC_DEV_INTR_MODE_MSIX: for (i = 0; i < enic->rq_count; i++) { netif_napi_add(netdev, &enic->napi[i], - enic_poll_msix, 64); + enic_poll_msix_rq, NAPI_POLL_WEIGHT); napi_hash_add(&enic->napi[i]); } + for (i = 0; i < enic->wq_count; i++) + netif_napi_add(netdev, &enic->napi[enic_cq_wq(enic, i)], + enic_poll_msix_wq, NAPI_POLL_WEIGHT); break; }