[PATCH net-next 13/40] net: fec: split off napi routine with 3 queues
From: Troy Kisky <hidden>
Date: 2016-01-28 21:25:37
Also in:
netdev
Subsystem:
freescale imx / mxc fec driver, networking drivers, the rest · Maintainers:
Wei Fang, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
If we only have 1 tx/rx queue, we need not check the other queues. Signed-off-by: Troy Kisky <redacted> --- drivers/net/ethernet/freescale/fec_main.c | 39 +++++++++++++++++++++++++++++-- 1 file changed, 37 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index 8bebf01..04b1fb7 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c@@ -1510,7 +1510,7 @@ fec_enet_interrupt(int irq, void *dev_id) return IRQ_HANDLED; } -static int fec_enet_rx_napi(struct napi_struct *napi, int budget) +static int fec_enet_napi_q3(struct napi_struct *napi, int budget) { struct net_device *ndev = napi->dev; struct fec_enet_private *fep = netdev_priv(ndev);
@@ -1553,6 +1553,39 @@ static int fec_enet_rx_napi(struct napi_struct *napi, int budget) return pkts; } +static int fec_enet_napi_q1(struct napi_struct *napi, int budget) +{ + struct net_device *ndev = napi->dev; + struct fec_enet_private *fep = netdev_priv(ndev); + int pkts = 0; + uint events; + + do { + events = readl(fep->hwp + FEC_IEVENT); + if (fep->events) { + events |= fep->events; + fep->events = 0; + } + events &= FEC_ENET_RXF_0 | FEC_ENET_TXF_0; + if (!events) { + if (budget) { + napi_complete(napi); + writel(FEC_DEFAULT_IMASK, fep->hwp + FEC_IMASK); + } + return pkts; + } + + writel(events, fep->hwp + FEC_IEVENT); + if (events & FEC_ENET_RXF_0) + pkts += fec_rxq(ndev, fep, fep->rx_queue[0], + budget - pkts); + if (events & FEC_ENET_TXF_0) + fec_txq(ndev, fep, fep->tx_queue[0]); + } while (pkts < budget); + fep->events |= FEC_ENET_RXF_0; /* save for next callback */ + return pkts; +} + /* ------------------------------------------------------------------------- */ static void fec_get_mac(struct net_device *ndev) {
@@ -3113,7 +3146,9 @@ static int fec_enet_init(struct net_device *ndev) ndev->ethtool_ops = &fec_enet_ethtool_ops; writel(FEC_RX_DISABLED_IMASK, fep->hwp + FEC_IMASK); - netif_napi_add(ndev, &fep->napi, fec_enet_rx_napi, NAPI_POLL_WEIGHT); + netif_napi_add(ndev, &fep->napi, (fep->num_rx_queues | + fep->num_tx_queues) == 1 ? fec_enet_napi_q1 : + fec_enet_napi_q3, NAPI_POLL_WEIGHT); if (fep->quirks & FEC_QUIRK_HAS_VLAN) /* enable hw VLAN support */
--
2.5.0