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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/infiniband/ulp/ipoib/ipoib_ethtool.c
parentInitial commit. (diff)
downloadlinux-upstream.tar.xz
linux-upstream.zip
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--drivers/infiniband/ulp/ipoib/ipoib_ethtool.c236
1 files changed, 236 insertions, 0 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c b/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c
new file mode 100644
index 000000000..8af99b18d
--- /dev/null
+++ b/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c
@@ -0,0 +1,236 @@
+/*
+ * 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"
+
+struct ipoib_stats {
+ char stat_string[ETH_GSTRING_LEN];
+ int stat_offset;
+};
+
+#define IPOIB_NETDEV_STAT(m) { \
+ .stat_string = #m, \
+ .stat_offset = offsetof(struct rtnl_link_stats64, m) }
+
+static const struct ipoib_stats ipoib_gstrings_stats[] = {
+ IPOIB_NETDEV_STAT(rx_packets),
+ IPOIB_NETDEV_STAT(tx_packets),
+ IPOIB_NETDEV_STAT(rx_bytes),
+ IPOIB_NETDEV_STAT(tx_bytes),
+ IPOIB_NETDEV_STAT(tx_errors),
+ IPOIB_NETDEV_STAT(rx_dropped),
+ IPOIB_NETDEV_STAT(tx_dropped),
+ IPOIB_NETDEV_STAT(multicast),
+};
+
+#define IPOIB_GLOBAL_STATS_LEN ARRAY_SIZE(ipoib_gstrings_stats)
+
+static void ipoib_get_drvinfo(struct net_device *netdev,
+ struct ethtool_drvinfo *drvinfo)
+{
+ struct ipoib_dev_priv *priv = ipoib_priv(netdev);
+
+ ib_get_device_fw_str(priv->ca, drvinfo->fw_version);
+
+ strscpy(drvinfo->bus_info, dev_name(priv->ca->dev.parent),
+ sizeof(drvinfo->bus_info));
+
+ strscpy(drvinfo->driver, "ib_ipoib", sizeof(drvinfo->driver));
+}
+
+static int ipoib_get_coalesce(struct net_device *dev,
+ struct ethtool_coalesce *coal,
+ struct kernel_ethtool_coalesce *kernel_coal,
+ struct netlink_ext_ack *extack)
+{
+ struct ipoib_dev_priv *priv = ipoib_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 kernel_ethtool_coalesce *kernel_coal,
+ struct netlink_ext_ack *extack)
+{
+ struct ipoib_dev_priv *priv = ipoib_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 = rdma_set_cq_moderation(priv->recv_cq,
+ coal->rx_max_coalesced_frames,
+ coal->rx_coalesce_usecs);
+ if (ret && ret != -EOPNOTSUPP) {
+ 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 void ipoib_get_ethtool_stats(struct net_device *dev,
+ struct ethtool_stats __always_unused *stats,
+ u64 *data)
+{
+ int i;
+ struct net_device_stats *net_stats = &dev->stats;
+ u8 *p = (u8 *)net_stats;
+
+ for (i = 0; i < IPOIB_GLOBAL_STATS_LEN; i++)
+ data[i] = *(u64 *)(p + ipoib_gstrings_stats[i].stat_offset);
+
+}
+static void ipoib_get_strings(struct net_device __always_unused *dev,
+ u32 stringset, u8 *data)
+{
+ u8 *p = data;
+ int i;
+
+ switch (stringset) {
+ case ETH_SS_STATS:
+ for (i = 0; i < IPOIB_GLOBAL_STATS_LEN; i++) {
+ memcpy(p, ipoib_gstrings_stats[i].stat_string,
+ ETH_GSTRING_LEN);
+ p += ETH_GSTRING_LEN;
+ }
+ break;
+ default:
+ break;
+ }
+}
+static int ipoib_get_sset_count(struct net_device __always_unused *dev,
+ int sset)
+{
+ switch (sset) {
+ case ETH_SS_STATS:
+ return IPOIB_GLOBAL_STATS_LEN;
+ default:
+ break;
+ }
+ return -EOPNOTSUPP;
+}
+
+/* Return lane speed in unit of 1e6 bit/sec */
+static inline int ib_speed_enum_to_int(int speed)
+{
+ switch (speed) {
+ case IB_SPEED_SDR:
+ return SPEED_2500;
+ case IB_SPEED_DDR:
+ return SPEED_5000;
+ case IB_SPEED_QDR:
+ case IB_SPEED_FDR10:
+ return SPEED_10000;
+ case IB_SPEED_FDR:
+ return SPEED_14000;
+ case IB_SPEED_EDR:
+ return SPEED_25000;
+ case IB_SPEED_HDR:
+ return SPEED_50000;
+ case IB_SPEED_NDR:
+ return SPEED_100000;
+ }
+
+ return SPEED_UNKNOWN;
+}
+
+static int ipoib_get_link_ksettings(struct net_device *netdev,
+ struct ethtool_link_ksettings *cmd)
+{
+ struct ipoib_dev_priv *priv = ipoib_priv(netdev);
+ struct ib_port_attr attr;
+ int ret, speed, width;
+
+ if (!netif_carrier_ok(netdev)) {
+ cmd->base.speed = SPEED_UNKNOWN;
+ cmd->base.duplex = DUPLEX_UNKNOWN;
+ return 0;
+ }
+
+ ret = ib_query_port(priv->ca, priv->port, &attr);
+ if (ret < 0)
+ return -EINVAL;
+
+ speed = ib_speed_enum_to_int(attr.active_speed);
+ width = ib_width_enum_to_int(attr.active_width);
+
+ if (speed < 0 || width < 0)
+ return -EINVAL;
+
+ /* Except the following are set, the other members of
+ * the struct ethtool_link_settings are initialized to
+ * zero in the function __ethtool_get_link_ksettings.
+ */
+ cmd->base.speed = speed * width;
+ cmd->base.duplex = DUPLEX_FULL;
+
+ cmd->base.phy_address = 0xFF;
+
+ cmd->base.autoneg = AUTONEG_ENABLE;
+ cmd->base.port = PORT_OTHER;
+
+ return 0;
+}
+
+static const struct ethtool_ops ipoib_ethtool_ops = {
+ .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS |
+ ETHTOOL_COALESCE_RX_MAX_FRAMES,
+ .get_link_ksettings = ipoib_get_link_ksettings,
+ .get_drvinfo = ipoib_get_drvinfo,
+ .get_coalesce = ipoib_get_coalesce,
+ .set_coalesce = ipoib_set_coalesce,
+ .get_strings = ipoib_get_strings,
+ .get_ethtool_stats = ipoib_get_ethtool_stats,
+ .get_sset_count = ipoib_get_sset_count,
+ .get_link = ethtool_op_get_link,
+};
+
+void ipoib_set_ethtool_ops(struct net_device *dev)
+{
+ dev->ethtool_ops = &ipoib_ethtool_ops;
+}