ipoib_ethtool.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0
    3  *
    4  * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
    5  *
    6  * This software is available to you under a choice of one of two
    7  * licenses.  You may choose to be licensed under the terms of the GNU
    8  * General Public License (GPL) Version 2, available from the file
    9  * COPYING in the main directory of this source tree, or the
   10  * OpenIB.org BSD license below:
   11  *
   12  *     Redistribution and use in source and binary forms, with or
   13  *     without modification, are permitted provided that the following
   14  *     conditions are met:
   15  *
   16  *      - Redistributions of source code must retain the above
   17  *        copyright notice, this list of conditions and the following
   18  *        disclaimer.
   19  *
   20  *      - Redistributions in binary form must reproduce the above
   21  *        copyright notice, this list of conditions and the following
   22  *        disclaimer in the documentation and/or other materials
   23  *        provided with the distribution.
   24  *
   25  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   26  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   27  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
   28  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
   29  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
   30  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
   31  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   32  * SOFTWARE.
   33  */
   34 
   35 #include <sys/cdefs.h>
   36 __FBSDID("$FreeBSD$");
   37 
   38 #include <linux/kernel.h>
   39 #include <linux/netdevice.h>
   40 
   41 #include "ipoib.h"
   42 
   43 static void ipoib_get_drvinfo(struct ifnet *netdev,
   44                               struct ethtool_drvinfo *drvinfo)
   45 {
   46         strncpy(drvinfo->driver, "ipoib", sizeof(drvinfo->driver) - 1);
   47 }
   48 
   49 static u32 ipoib_get_rx_csum(struct ifnet *dev)
   50 {
   51         struct ipoib_dev_priv *priv = dev->if_softc;
   52         return test_bit(IPOIB_FLAG_CSUM, &priv->flags) &&
   53                 !test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
   54 }
   55 
   56 static int ipoib_get_coalesce(struct ifnet *dev,
   57                               struct ethtool_coalesce *coal)
   58 {
   59         struct ipoib_dev_priv *priv = dev->if_softc;
   60 
   61         coal->rx_coalesce_usecs = priv->ethtool.coalesce_usecs;
   62         coal->tx_coalesce_usecs = priv->ethtool.coalesce_usecs;
   63         coal->rx_max_coalesced_frames = priv->ethtool.max_coalesced_frames;
   64         coal->tx_max_coalesced_frames = priv->ethtool.max_coalesced_frames;
   65 
   66         return 0;
   67 }
   68 
   69 static int ipoib_set_coalesce(struct ifnet *dev,
   70                               struct ethtool_coalesce *coal)
   71 {
   72         struct ipoib_dev_priv *priv = dev->if_softc;
   73         int ret;
   74 
   75         /*
   76          * Since IPoIB uses a single CQ for both rx and tx, we assume
   77          * that rx params dictate the configuration.  These values are
   78          * saved in the private data and returned when ipoib_get_coalesce()
   79          * is called.
   80          */
   81         if (coal->rx_coalesce_usecs       > 0xffff ||
   82             coal->rx_max_coalesced_frames > 0xffff)
   83                 return -EINVAL;
   84 
   85         if (coal->rx_max_coalesced_frames | coal->rx_coalesce_usecs) {
   86                 if (!coal->rx_max_coalesced_frames)
   87                         coal->rx_max_coalesced_frames = 0xffff;
   88                 else if (!coal->rx_coalesce_usecs)
   89                         coal->rx_coalesce_usecs = 0xffff;
   90         }
   91 
   92         ret = ib_modify_cq(priv->recv_cq, coal->rx_max_coalesced_frames,
   93                            coal->rx_coalesce_usecs);
   94         if (ret && ret != -ENOSYS) {
   95                 ipoib_warn(priv, "failed modifying CQ (%d)\n", ret);
   96                 return ret;
   97         }
   98 
   99         coal->tx_coalesce_usecs       = coal->rx_coalesce_usecs;
  100         coal->tx_max_coalesced_frames = coal->rx_max_coalesced_frames;
  101         priv->ethtool.coalesce_usecs       = coal->rx_coalesce_usecs;
  102         priv->ethtool.max_coalesced_frames = coal->rx_max_coalesced_frames;
  103 
  104         return 0;
  105 }
  106 
  107 static const char ipoib_stats_keys[][ETH_GSTRING_LEN] = {
  108         "LRO aggregated", "LRO flushed",
  109         "LRO avg aggr", "LRO no desc"
  110 };
  111 
  112 static void ipoib_get_strings(struct ifnet *netdev, u32 stringset, u8 *data)
  113 {
  114         switch (stringset) {
  115         case ETH_SS_STATS:
  116                 memcpy(data, *ipoib_stats_keys, sizeof(ipoib_stats_keys));
  117                 break;
  118         }
  119 }
  120 
  121 static int ipoib_get_sset_count(struct ifnet *dev, int sset)
  122 {
  123         switch (sset) {
  124         case ETH_SS_STATS:
  125                 return ARRAY_SIZE(ipoib_stats_keys);
  126         default:
  127                 return -EOPNOTSUPP;
  128         }
  129 }
  130 
  131 static void ipoib_get_ethtool_stats(struct ifnet *dev,
  132                                 struct ethtool_stats *stats, uint64_t *data)
  133 {
  134         struct ipoib_dev_priv *priv = dev->if_softc;
  135         int index = 0;
  136 
  137         /* Get LRO statistics */
  138         data[index++] = priv->lro.lro_mgr.stats.aggregated;
  139         data[index++] = priv->lro.lro_mgr.stats.flushed;
  140         if (priv->lro.lro_mgr.stats.flushed)
  141                 data[index++] = priv->lro.lro_mgr.stats.aggregated /
  142                                 priv->lro.lro_mgr.stats.flushed;
  143         else
  144                 data[index++] = 0;
  145         data[index++] = priv->lro.lro_mgr.stats.no_desc;
  146 }
  147 
  148 static const struct ethtool_ops ipoib_ethtool_ops = {
  149         .get_drvinfo            = ipoib_get_drvinfo,
  150         .get_rx_csum            = ipoib_get_rx_csum,
  151         .get_coalesce           = ipoib_get_coalesce,
  152         .set_coalesce           = ipoib_set_coalesce,
  153         .get_flags              = ethtool_op_get_flags,
  154         .set_flags              = ethtool_op_set_flags,
  155         .get_strings            = ipoib_get_strings,
  156         .get_sset_count         = ipoib_get_sset_count,
  157         .get_ethtool_stats      = ipoib_get_ethtool_stats,
  158 };
  159 
  160 void ipoib_set_ethtool_ops(struct ifnet *dev)
  161 {
  162         SET_ETHTOOL_OPS(dev, &ipoib_ethtool_ops);
  163 }

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FreeBSD/Linux Kernel Cross Reference sys/ofed/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c

FreeBSD/Linux Kernel Cross Reference
sys/ofed/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c