Eli Cohen | 82c24c1 | 2008-04-16 21:09:32 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2007 Mellanox Technologies. All rights reserved. |
| 3 | * |
| 4 | * This software is available to you under a choice of one of two |
| 5 | * licenses. You may choose to be licensed under the terms of the GNU |
| 6 | * General Public License (GPL) Version 2, available from the file |
| 7 | * COPYING in the main directory of this source tree, or the |
| 8 | * OpenIB.org BSD license below: |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or |
| 11 | * without modification, are permitted provided that the following |
| 12 | * conditions are met: |
| 13 | * |
| 14 | * - Redistributions of source code must retain the above |
| 15 | * copyright notice, this list of conditions and the following |
| 16 | * disclaimer. |
| 17 | * |
| 18 | * - Redistributions in binary form must reproduce the above |
| 19 | * copyright notice, this list of conditions and the following |
| 20 | * disclaimer in the documentation and/or other materials |
| 21 | * provided with the distribution. |
| 22 | * |
| 23 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 24 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 25 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 26 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 27 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 28 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 29 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 30 | * SOFTWARE. |
| 31 | */ |
| 32 | |
| 33 | #include <linux/kernel.h> |
| 34 | #include <linux/ethtool.h> |
| 35 | #include <linux/netdevice.h> |
| 36 | |
| 37 | #include "ipoib.h" |
| 38 | |
| 39 | static void ipoib_get_drvinfo(struct net_device *netdev, |
| 40 | struct ethtool_drvinfo *drvinfo) |
| 41 | { |
| 42 | strncpy(drvinfo->driver, "ipoib", sizeof(drvinfo->driver) - 1); |
| 43 | } |
| 44 | |
Eli Cohen | 28d52b3 | 2008-04-16 21:09:33 -0700 | [diff] [blame^] | 45 | static int ipoib_get_coalesce(struct net_device *dev, |
| 46 | struct ethtool_coalesce *coal) |
| 47 | { |
| 48 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 49 | |
| 50 | coal->rx_coalesce_usecs = priv->ethtool.coalesce_usecs; |
| 51 | coal->tx_coalesce_usecs = priv->ethtool.coalesce_usecs; |
| 52 | coal->rx_max_coalesced_frames = priv->ethtool.max_coalesced_frames; |
| 53 | coal->tx_max_coalesced_frames = priv->ethtool.max_coalesced_frames; |
| 54 | |
| 55 | return 0; |
| 56 | } |
| 57 | |
| 58 | static int ipoib_set_coalesce(struct net_device *dev, |
| 59 | struct ethtool_coalesce *coal) |
| 60 | { |
| 61 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
| 62 | int ret; |
| 63 | |
| 64 | /* |
| 65 | * Since IPoIB uses a single CQ for both rx and tx, we assume |
| 66 | * that rx params dictate the configuration. These values are |
| 67 | * saved in the private data and returned when ipoib_get_coalesce() |
| 68 | * is called. |
| 69 | */ |
| 70 | if (coal->rx_coalesce_usecs > 0xffff || |
| 71 | coal->rx_max_coalesced_frames > 0xffff) |
| 72 | return -EINVAL; |
| 73 | |
| 74 | ret = ib_modify_cq(priv->cq, coal->rx_max_coalesced_frames, |
| 75 | coal->rx_coalesce_usecs); |
| 76 | if (ret && ret != -ENOSYS) { |
| 77 | ipoib_warn(priv, "failed modifying CQ (%d)\n", ret); |
| 78 | return ret; |
| 79 | } |
| 80 | |
| 81 | coal->tx_coalesce_usecs = coal->rx_coalesce_usecs; |
| 82 | coal->tx_max_coalesced_frames = coal->rx_max_coalesced_frames; |
| 83 | priv->ethtool.coalesce_usecs = coal->rx_coalesce_usecs; |
| 84 | priv->ethtool.max_coalesced_frames = coal->rx_max_coalesced_frames; |
| 85 | |
| 86 | return 0; |
| 87 | } |
| 88 | |
Eli Cohen | 82c24c1 | 2008-04-16 21:09:32 -0700 | [diff] [blame] | 89 | static const struct ethtool_ops ipoib_ethtool_ops = { |
| 90 | .get_drvinfo = ipoib_get_drvinfo, |
| 91 | .get_tso = ethtool_op_get_tso, |
Eli Cohen | 28d52b3 | 2008-04-16 21:09:33 -0700 | [diff] [blame^] | 92 | .get_coalesce = ipoib_get_coalesce, |
| 93 | .set_coalesce = ipoib_set_coalesce, |
Eli Cohen | 82c24c1 | 2008-04-16 21:09:32 -0700 | [diff] [blame] | 94 | }; |
| 95 | |
| 96 | void ipoib_set_ethtool_ops(struct net_device *dev) |
| 97 | { |
| 98 | SET_ETHTOOL_OPS(dev, &ipoib_ethtool_ops); |
| 99 | } |