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nfp: add support for ethtool .get_channels
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Report number of rings via ethtool .get_channels API.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Jakub Kicinski authored and David S. Miller committed Nov 4, 2016
1 parent 013724e commit 81cc2e4
Showing 1 changed file with 16 additions and 0 deletions.
16 changes: 16 additions & 0 deletions drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
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Original file line number Diff line number Diff line change
Expand Up @@ -614,6 +614,21 @@ static int nfp_net_set_coalesce(struct net_device *netdev,
return nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_IRQMOD);
}

static void nfp_net_get_channels(struct net_device *netdev,
struct ethtool_channels *channel)
{
struct nfp_net *nn = netdev_priv(netdev);

channel->max_rx = min(nn->max_rx_rings, nn->max_r_vecs);
channel->max_tx = min(nn->max_tx_rings, nn->max_r_vecs);
channel->max_combined = min(channel->max_rx, channel->max_tx);
channel->max_other = NFP_NET_NON_Q_VECTORS;
channel->combined_count = min(nn->num_rx_rings, nn->num_tx_rings);
channel->rx_count = nn->num_rx_rings - channel->combined_count;
channel->tx_count = nn->num_tx_rings - channel->combined_count;
channel->other_count = NFP_NET_NON_Q_VECTORS;
}

static const struct ethtool_ops nfp_net_ethtool_ops = {
.get_drvinfo = nfp_net_get_drvinfo,
.get_link = ethtool_op_get_link,
Expand All @@ -632,6 +647,7 @@ static const struct ethtool_ops nfp_net_ethtool_ops = {
.get_regs = nfp_net_get_regs,
.get_coalesce = nfp_net_get_coalesce,
.set_coalesce = nfp_net_set_coalesce,
.get_channels = nfp_net_get_channels,
};

void nfp_net_set_ethtool_ops(struct net_device *netdev)
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