diff options
| -rw-r--r-- | drivers/net/ethernet/freescale/fec_main.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c index e8a241754a46..7f6e5a5654fd 100644 --- a/drivers/net/ethernet/freescale/fec_main.c +++ b/drivers/net/ethernet/freescale/fec_main.c @@ -1990,6 +1990,51 @@ static int fec_enet_get_ts_info(struct net_device *ndev, } } +static void fec_enet_get_ringparam(struct net_device *ndev, + struct ethtool_ringparam *ring) +{ + struct fec_enet_private *fep = netdev_priv(ndev); + + ring->rx_max_pending = RX_RING_SIZE; + ring->tx_max_pending = TX_RING_SIZE; + ring->rx_pending = fep->rx_ring_size; + ring->tx_pending = fep->tx_ring_size; +} + +static int fec_enet_set_ringparam(struct net_device *ndev, + struct ethtool_ringparam *ring) +{ + struct fec_enet_private *fep = netdev_priv(ndev); + unsigned rx, tx, tx_min; + + tx_min = ndev->features & NETIF_F_SG ? TX_RING_SIZE_MIN_SG : 16; + + rx = clamp_t(u32, ring->rx_pending, 16, RX_RING_SIZE); + tx = clamp_t(u32, ring->tx_pending, tx_min, TX_RING_SIZE); + + if (tx == fep->tx_ring_size && rx == fep->rx_ring_size) + return 0; + + /* Setting the ring size while the interface is down is easy */ + if (!netif_running(ndev)) { + fep->tx_ring_size = tx; + fep->rx_ring_size = rx; + } else { + return -EINVAL; + + napi_disable(&fep->napi); + netif_tx_lock_bh(ndev); + fec_stop(ndev); + /* reallocate ring */ + fec_restart(ndev); + netif_wake_queue(ndev); + netif_tx_unlock_bh(ndev); + napi_enable(&fep->napi); + } + + return 0; +} + #if !defined(CONFIG_M5272) static void fec_enet_get_pauseparam(struct net_device *ndev, @@ -2194,6 +2239,8 @@ static const struct ethtool_ops fec_enet_ethtool_ops = { .get_drvinfo = fec_enet_get_drvinfo, .nway_reset = fec_enet_nway_reset, .get_link = ethtool_op_get_link, + .get_ringparam = fec_enet_get_ringparam, + .set_ringparam = fec_enet_set_ringparam, #ifndef CONFIG_M5272 .get_pauseparam = fec_enet_get_pauseparam, .set_pauseparam = fec_enet_set_pauseparam, |