Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / infiniband / ulp / ipoib / ipoib_ethtool.c

diff --git a/kernel/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c b/kernel/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c
new file mode 100644 (file)
index 0000000..078cadd
--- /dev/null
+++ b/kernel/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c
@@ -0,0 +1,109 @@
+/*
+ * 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)
+{
+       struct ipoib_dev_priv *priv = netdev_priv(netdev);
+       struct ib_device_attr *attr;
+
+       attr = kmalloc(sizeof(*attr), GFP_KERNEL);
+       if (attr && !ib_query_device(priv->ca, attr))
+               snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
+                        "%d.%d.%d", (int)(attr->fw_ver >> 32),
+                        (int)(attr->fw_ver >> 16) & 0xffff,
+                        (int)attr->fw_ver & 0xffff);
+       kfree(attr);
+
+       strlcpy(drvinfo->bus_info, dev_name(priv->ca->dma_device),
+               sizeof(drvinfo->bus_info));
+
+       strlcpy(drvinfo->version, ipoib_driver_version,
+               sizeof(drvinfo->version));
+
+       strlcpy(drvinfo->driver, "ib_ipoib", sizeof(drvinfo->driver));
+}
+
+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->rx_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;
+
+       /*
+        * 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;
+       }
+
+       priv->ethtool.coalesce_usecs       = coal->rx_coalesce_usecs;
+       priv->ethtool.max_coalesced_frames = coal->rx_max_coalesced_frames;
+
+       return 0;
+}
+
+static const struct ethtool_ops ipoib_ethtool_ops = {
+       .get_drvinfo            = ipoib_get_drvinfo,
+       .get_coalesce           = ipoib_get_coalesce,
+       .set_coalesce           = ipoib_set_coalesce,
+};
+
+void ipoib_set_ethtool_ops(struct net_device *dev)
+{
+       dev->ethtool_ops = &ipoib_ethtool_ops;
+}