diff options
Diffstat (limited to 'drivers/infiniband/ulp/ipoib/ipoib_ethtool.c')
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib_ethtool.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c b/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c new file mode 100644 index 0000000..e9795f6 --- /dev/null +++ b/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c @@ -0,0 +1,152 @@ +/* + * 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 u32 ipoib_get_rx_csum(struct net_device *dev) +{ + struct ipoib_dev_priv *priv = netdev_priv(dev); + return test_bit(IPOIB_FLAG_CSUM, &priv->flags) && + !test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags); +} + +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->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; + } + + 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 char ipoib_stats_keys[][ETH_GSTRING_LEN] = { + "LRO aggregated", "LRO flushed", + "LRO avg aggr", "LRO no desc" +}; + +static void ipoib_get_strings(struct net_device *netdev, u32 stringset, u8 *data) +{ + switch (stringset) { + case ETH_SS_STATS: + memcpy(data, *ipoib_stats_keys, sizeof(ipoib_stats_keys)); + break; + } +} + +static int ipoib_get_sset_count(struct net_device *dev, int sset) +{ + switch (sset) { + case ETH_SS_STATS: + return ARRAY_SIZE(ipoib_stats_keys); + default: + return -EOPNOTSUPP; + } +} + +static void ipoib_get_ethtool_stats(struct net_device *dev, + struct ethtool_stats *stats, uint64_t *data) +{ + struct ipoib_dev_priv *priv = netdev_priv(dev); + int index = 0; + + /* Get LRO statistics */ + data[index++] = priv->lro.lro_mgr.stats.aggregated; + data[index++] = priv->lro.lro_mgr.stats.flushed; + if (priv->lro.lro_mgr.stats.flushed) + data[index++] = priv->lro.lro_mgr.stats.aggregated / + priv->lro.lro_mgr.stats.flushed; + else + data[index++] = 0; + data[index++] = priv->lro.lro_mgr.stats.no_desc; +} + +static const struct ethtool_ops ipoib_ethtool_ops = { + .get_drvinfo = ipoib_get_drvinfo, + .get_rx_csum = ipoib_get_rx_csum, + .get_coalesce = ipoib_get_coalesce, + .set_coalesce = ipoib_set_coalesce, + .get_flags = ethtool_op_get_flags, + .set_flags = ethtool_op_set_flags, + .get_strings = ipoib_get_strings, + .get_sset_count = ipoib_get_sset_count, + .get_ethtool_stats = ipoib_get_ethtool_stats, +}; + +void ipoib_set_ethtool_ops(struct net_device *dev) +{ + SET_ETHTOOL_OPS(dev, &ipoib_ethtool_ops); +} |
