diff options
Diffstat (limited to 'kernel/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c')
-rw-r--r-- | kernel/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/kernel/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c b/kernel/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c new file mode 100644 index 000000000..078cadd6c --- /dev/null +++ b/kernel/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c @@ -0,0 +1,109 @@ +/* + * 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) +{ + struct ipoib_dev_priv *priv = netdev_priv(netdev); + struct ib_device_attr *attr; + + attr = kmalloc(sizeof(*attr), GFP_KERNEL); + if (attr && !ib_query_device(priv->ca, attr)) + snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version), + "%d.%d.%d", (int)(attr->fw_ver >> 32), + (int)(attr->fw_ver >> 16) & 0xffff, + (int)attr->fw_ver & 0xffff); + kfree(attr); + + strlcpy(drvinfo->bus_info, dev_name(priv->ca->dma_device), + sizeof(drvinfo->bus_info)); + + strlcpy(drvinfo->version, ipoib_driver_version, + sizeof(drvinfo->version)); + + strlcpy(drvinfo->driver, "ib_ipoib", sizeof(drvinfo->driver)); +} + +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->rx_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; + + /* + * 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->recv_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; + } + + 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_coalesce = ipoib_get_coalesce, + .set_coalesce = ipoib_set_coalesce, +}; + +void ipoib_set_ethtool_ops(struct net_device *dev) +{ + dev->ethtool_ops = &ipoib_ethtool_ops; +} |