| /* |
| * Copyright (c) 2007 Mellanox Technologies. All rights reserved. |
| * |
| * This software is available to you under a choice of one of two |
| * licenses. You may choose to be licensed under the terms of the GNU |
| * General Public License (GPL) Version 2, available from the file |
| * COPYING in the main directory of this source tree, or the |
| * OpenIB.org BSD license below: |
| * |
| * Redistribution and use in source and binary forms, with or |
| * without modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * - Redistributions of source code must retain the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials |
| * provided with the distribution. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/ethtool.h> |
| #include <linux/netdevice.h> |
| |
| #include "ipoib.h" |
| |
| static void ipoib_get_drvinfo(struct net_device *netdev, |
| struct ethtool_drvinfo *drvinfo) |
| { |
| strncpy(drvinfo->driver, "ipoib", sizeof(drvinfo->driver) - 1); |
| } |
| |
| static int ipoib_get_coalesce(struct net_device *dev, |
| struct ethtool_coalesce *coal) |
| { |
| struct ipoib_dev_priv *priv = netdev_priv(dev); |
| |
| coal->rx_coalesce_usecs = priv->ethtool.coalesce_usecs; |
| coal->tx_coalesce_usecs = priv->ethtool.coalesce_usecs; |
| coal->rx_max_coalesced_frames = priv->ethtool.max_coalesced_frames; |
| coal->tx_max_coalesced_frames = priv->ethtool.max_coalesced_frames; |
| |
| return 0; |
| } |
| |
| static int ipoib_set_coalesce(struct net_device *dev, |
| struct ethtool_coalesce *coal) |
| { |
| struct ipoib_dev_priv *priv = netdev_priv(dev); |
| int ret; |
| |
| /* |
| * Since IPoIB uses a single CQ for both rx and tx, we assume |
| * that rx params dictate the configuration. These values are |
| * saved in the private data and returned when ipoib_get_coalesce() |
| * is called. |
| */ |
| if (coal->rx_coalesce_usecs > 0xffff || |
| coal->rx_max_coalesced_frames > 0xffff) |
| return -EINVAL; |
| |
| ret = ib_modify_cq(priv->cq, coal->rx_max_coalesced_frames, |
| coal->rx_coalesce_usecs); |
| if (ret && ret != -ENOSYS) { |
| ipoib_warn(priv, "failed modifying CQ (%d)\n", ret); |
| return ret; |
| } |
| |
| coal->tx_coalesce_usecs = coal->rx_coalesce_usecs; |
| coal->tx_max_coalesced_frames = coal->rx_max_coalesced_frames; |
| priv->ethtool.coalesce_usecs = coal->rx_coalesce_usecs; |
| priv->ethtool.max_coalesced_frames = coal->rx_max_coalesced_frames; |
| |
| return 0; |
| } |
| |
| static const struct ethtool_ops ipoib_ethtool_ops = { |
| .get_drvinfo = ipoib_get_drvinfo, |
| .get_tso = ethtool_op_get_tso, |
| .get_coalesce = ipoib_get_coalesce, |
| .set_coalesce = ipoib_set_coalesce, |
| }; |
| |
| void ipoib_set_ethtool_ops(struct net_device *dev) |
| { |
| SET_ETHTOOL_OPS(dev, &ipoib_ethtool_ops); |
| } |