2 * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
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:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
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.
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
33 #include <linux/kernel.h>
34 #include <linux/ethtool.h>
35 #include <linux/netdevice.h>
39 static void ipoib_get_drvinfo(struct net_device
*netdev
,
40 struct ethtool_drvinfo
*drvinfo
)
42 struct ipoib_dev_priv
*priv
= netdev_priv(netdev
);
43 struct ib_device_attr
*attr
;
45 attr
= kmalloc(sizeof(*attr
), GFP_KERNEL
);
46 if (attr
&& !ib_query_device(priv
->ca
, attr
))
47 snprintf(drvinfo
->fw_version
, sizeof(drvinfo
->fw_version
),
48 "%d.%d.%d", (int)(attr
->fw_ver
>> 32),
49 (int)(attr
->fw_ver
>> 16) & 0xffff,
50 (int)attr
->fw_ver
& 0xffff);
53 strlcpy(drvinfo
->bus_info
, dev_name(priv
->ca
->dma_device
),
54 sizeof(drvinfo
->bus_info
));
56 strlcpy(drvinfo
->version
, ipoib_driver_version
,
57 sizeof(drvinfo
->version
));
59 strlcpy(drvinfo
->driver
, "ib_ipoib", sizeof(drvinfo
->driver
));
62 static int ipoib_get_coalesce(struct net_device
*dev
,
63 struct ethtool_coalesce
*coal
)
65 struct ipoib_dev_priv
*priv
= netdev_priv(dev
);
67 coal
->rx_coalesce_usecs
= priv
->ethtool
.coalesce_usecs
;
68 coal
->rx_max_coalesced_frames
= priv
->ethtool
.max_coalesced_frames
;
73 static int ipoib_set_coalesce(struct net_device
*dev
,
74 struct ethtool_coalesce
*coal
)
76 struct ipoib_dev_priv
*priv
= netdev_priv(dev
);
80 * These values are saved in the private data and returned
81 * when ipoib_get_coalesce() is called
83 if (coal
->rx_coalesce_usecs
> 0xffff ||
84 coal
->rx_max_coalesced_frames
> 0xffff)
87 ret
= ib_modify_cq(priv
->recv_cq
, coal
->rx_max_coalesced_frames
,
88 coal
->rx_coalesce_usecs
);
89 if (ret
&& ret
!= -ENOSYS
) {
90 ipoib_warn(priv
, "failed modifying CQ (%d)\n", ret
);
94 priv
->ethtool
.coalesce_usecs
= coal
->rx_coalesce_usecs
;
95 priv
->ethtool
.max_coalesced_frames
= coal
->rx_max_coalesced_frames
;
100 static const struct ethtool_ops ipoib_ethtool_ops
= {
101 .get_drvinfo
= ipoib_get_drvinfo
,
102 .get_coalesce
= ipoib_get_coalesce
,
103 .set_coalesce
= ipoib_set_coalesce
,
106 void ipoib_set_ethtool_ops(struct net_device
*dev
)
108 dev
->ethtool_ops
= &ipoib_ethtool_ops
;