diff options
Diffstat (limited to 'drivers/net/ethernet/cisco/enic/enic_ethtool.c')
| -rw-r--r-- | drivers/net/ethernet/cisco/enic/enic_ethtool.c | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/drivers/net/ethernet/cisco/enic/enic_ethtool.c b/drivers/net/ethernet/cisco/enic/enic_ethtool.c index fd3980cc1e34..462d0ce51240 100644 --- a/drivers/net/ethernet/cisco/enic/enic_ethtool.c +++ b/drivers/net/ethernet/cisco/enic/enic_ethtool.c @@ -176,6 +176,81 @@ static void enic_get_strings(struct net_device *netdev, u32 stringset, } } +static void enic_get_ringparam(struct net_device *netdev, + struct ethtool_ringparam *ring) +{ + struct enic *enic = netdev_priv(netdev); + struct vnic_enet_config *c = &enic->config; + + ring->rx_max_pending = ENIC_MAX_RQ_DESCS; + ring->rx_pending = c->rq_desc_count; + ring->tx_max_pending = ENIC_MAX_WQ_DESCS; + ring->tx_pending = c->wq_desc_count; +} + +static int enic_set_ringparam(struct net_device *netdev, + struct ethtool_ringparam *ring) +{ + struct enic *enic = netdev_priv(netdev); + struct vnic_enet_config *c = &enic->config; + int running = netif_running(netdev); + unsigned int rx_pending; + unsigned int tx_pending; + int err = 0; + + if (ring->rx_mini_max_pending || ring->rx_mini_pending) { + netdev_info(netdev, + "modifying mini ring params is not supported"); + return -EINVAL; + } + if (ring->rx_jumbo_max_pending || ring->rx_jumbo_pending) { + netdev_info(netdev, + "modifying jumbo ring params is not supported"); + return -EINVAL; + } + rx_pending = c->rq_desc_count; + tx_pending = c->wq_desc_count; + if (ring->rx_pending > ENIC_MAX_RQ_DESCS || + ring->rx_pending < ENIC_MIN_RQ_DESCS) { + netdev_info(netdev, "rx pending (%u) not in range [%u,%u]", + ring->rx_pending, ENIC_MIN_RQ_DESCS, + ENIC_MAX_RQ_DESCS); + return -EINVAL; + } + if (ring->tx_pending > ENIC_MAX_WQ_DESCS || + ring->tx_pending < ENIC_MIN_WQ_DESCS) { + netdev_info(netdev, "tx pending (%u) not in range [%u,%u]", + ring->tx_pending, ENIC_MIN_WQ_DESCS, + ENIC_MAX_WQ_DESCS); + return -EINVAL; + } + if (running) + dev_close(netdev); + c->rq_desc_count = + ring->rx_pending & 0xffffffe0; /* must be aligned to groups of 32 */ + c->wq_desc_count = + ring->tx_pending & 0xffffffe0; /* must be aligned to groups of 32 */ + enic_free_vnic_resources(enic); + err = enic_alloc_vnic_resources(enic); + if (err) { + netdev_err(netdev, + "Failed to alloc vNIC resources, aborting\n"); + enic_free_vnic_resources(enic); + goto err_out; + } + enic_init_vnic_resources(enic); + if (running) { + err = dev_open(netdev); + if (err) + goto err_out; + } + return 0; +err_out: + c->rq_desc_count = rx_pending; + c->wq_desc_count = tx_pending; + return err; +} + static int enic_get_sset_count(struct net_device *netdev, int sset) { switch (sset) { @@ -509,6 +584,8 @@ static const struct ethtool_ops enic_ethtool_ops = { .set_msglevel = enic_set_msglevel, .get_link = ethtool_op_get_link, .get_strings = enic_get_strings, + .get_ringparam = enic_get_ringparam, + .set_ringparam = enic_set_ringparam, .get_sset_count = enic_get_sset_count, .get_ethtool_stats = enic_get_ethtool_stats, .get_coalesce = enic_get_coalesce, |