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https://github.com/edk2-porting/linux-next.git
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757bebb3f9
As of commit f56bcd8 ("IPoIB: Use separate CQ for UD send
completions"), there are no TX interrupts. Change the ethtool code
not to report TX moderation settings, so users will not be misled to
think they can control TX interrupt moderation. Pointed out by Alex
Vainman <alexv@voltaire.com>
Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
147 lines
4.3 KiB
C
147 lines
4.3 KiB
C
/*
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* Copyright (c) 2007 Mellanox Technologies. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <linux/kernel.h>
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#include <linux/ethtool.h>
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#include <linux/netdevice.h>
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#include "ipoib.h"
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static void ipoib_get_drvinfo(struct net_device *netdev,
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struct ethtool_drvinfo *drvinfo)
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{
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strncpy(drvinfo->driver, "ipoib", sizeof(drvinfo->driver) - 1);
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}
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static u32 ipoib_get_rx_csum(struct net_device *dev)
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{
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struct ipoib_dev_priv *priv = netdev_priv(dev);
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return test_bit(IPOIB_FLAG_CSUM, &priv->flags) &&
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!test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
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}
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static int ipoib_get_coalesce(struct net_device *dev,
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struct ethtool_coalesce *coal)
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{
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struct ipoib_dev_priv *priv = netdev_priv(dev);
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coal->rx_coalesce_usecs = priv->ethtool.coalesce_usecs;
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coal->rx_max_coalesced_frames = priv->ethtool.max_coalesced_frames;
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return 0;
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}
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static int ipoib_set_coalesce(struct net_device *dev,
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struct ethtool_coalesce *coal)
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{
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struct ipoib_dev_priv *priv = netdev_priv(dev);
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int ret;
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/*
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* These values are saved in the private data and returned
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* when ipoib_get_coalesce() is called
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*/
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if (coal->rx_coalesce_usecs > 0xffff ||
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coal->rx_max_coalesced_frames > 0xffff)
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return -EINVAL;
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ret = ib_modify_cq(priv->recv_cq, coal->rx_max_coalesced_frames,
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coal->rx_coalesce_usecs);
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if (ret && ret != -ENOSYS) {
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ipoib_warn(priv, "failed modifying CQ (%d)\n", ret);
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return ret;
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}
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priv->ethtool.coalesce_usecs = coal->rx_coalesce_usecs;
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priv->ethtool.max_coalesced_frames = coal->rx_max_coalesced_frames;
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return 0;
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}
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static const char ipoib_stats_keys[][ETH_GSTRING_LEN] = {
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"LRO aggregated", "LRO flushed",
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"LRO avg aggr", "LRO no desc"
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};
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static void ipoib_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
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{
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switch (stringset) {
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case ETH_SS_STATS:
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memcpy(data, *ipoib_stats_keys, sizeof(ipoib_stats_keys));
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break;
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}
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}
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static int ipoib_get_sset_count(struct net_device *dev, int sset)
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{
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switch (sset) {
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case ETH_SS_STATS:
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return ARRAY_SIZE(ipoib_stats_keys);
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default:
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return -EOPNOTSUPP;
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}
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}
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static void ipoib_get_ethtool_stats(struct net_device *dev,
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struct ethtool_stats *stats, uint64_t *data)
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{
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struct ipoib_dev_priv *priv = netdev_priv(dev);
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int index = 0;
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/* Get LRO statistics */
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data[index++] = priv->lro.lro_mgr.stats.aggregated;
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data[index++] = priv->lro.lro_mgr.stats.flushed;
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if (priv->lro.lro_mgr.stats.flushed)
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data[index++] = priv->lro.lro_mgr.stats.aggregated /
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priv->lro.lro_mgr.stats.flushed;
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else
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data[index++] = 0;
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data[index++] = priv->lro.lro_mgr.stats.no_desc;
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}
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static const struct ethtool_ops ipoib_ethtool_ops = {
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.get_drvinfo = ipoib_get_drvinfo,
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.get_rx_csum = ipoib_get_rx_csum,
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.get_coalesce = ipoib_get_coalesce,
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.set_coalesce = ipoib_set_coalesce,
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.get_flags = ethtool_op_get_flags,
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.set_flags = ethtool_op_set_flags,
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.get_strings = ipoib_get_strings,
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.get_sset_count = ipoib_get_sset_count,
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.get_ethtool_stats = ipoib_get_ethtool_stats,
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};
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void ipoib_set_ethtool_ops(struct net_device *dev)
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{
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SET_ETHTOOL_OPS(dev, &ipoib_ethtool_ops);
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}
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