567 lines
17 KiB
C
567 lines
17 KiB
C
/*
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* Linux driver for VMware's vmxnet3 ethernet NIC.
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*
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* Copyright (C) 2008-2009, VMware, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; version 2 of the License and no later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* The full GNU General Public License is included in this distribution in
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* the file called "COPYING".
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*
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* Maintained by: Shreyas Bhatewara <pv-drivers@vmware.com>
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*
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*/
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#include "vmxnet3_int.h"
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struct vmxnet3_stat_desc {
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char desc[ETH_GSTRING_LEN];
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int offset;
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};
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static u32
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vmxnet3_get_rx_csum(struct net_device *netdev)
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{
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struct vmxnet3_adapter *adapter = netdev_priv(netdev);
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return adapter->rxcsum;
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}
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static int
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vmxnet3_set_rx_csum(struct net_device *netdev, u32 val)
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{
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struct vmxnet3_adapter *adapter = netdev_priv(netdev);
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if (adapter->rxcsum != val) {
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adapter->rxcsum = val;
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if (netif_running(netdev)) {
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if (val)
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adapter->shared->devRead.misc.uptFeatures |=
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UPT1_F_RXCSUM;
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else
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adapter->shared->devRead.misc.uptFeatures &=
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~UPT1_F_RXCSUM;
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VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
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VMXNET3_CMD_UPDATE_FEATURE);
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}
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}
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return 0;
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}
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/* per tq stats maintained by the device */
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static const struct vmxnet3_stat_desc
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vmxnet3_tq_dev_stats[] = {
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/* description, offset */
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{ "TSO pkts tx", offsetof(struct UPT1_TxStats, TSOPktsTxOK) },
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{ "TSO bytes tx", offsetof(struct UPT1_TxStats, TSOBytesTxOK) },
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{ "ucast pkts tx", offsetof(struct UPT1_TxStats, ucastPktsTxOK) },
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{ "ucast bytes tx", offsetof(struct UPT1_TxStats, ucastBytesTxOK) },
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{ "mcast pkts tx", offsetof(struct UPT1_TxStats, mcastPktsTxOK) },
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{ "mcast bytes tx", offsetof(struct UPT1_TxStats, mcastBytesTxOK) },
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{ "bcast pkts tx", offsetof(struct UPT1_TxStats, bcastPktsTxOK) },
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{ "bcast bytes tx", offsetof(struct UPT1_TxStats, bcastBytesTxOK) },
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{ "pkts tx err", offsetof(struct UPT1_TxStats, pktsTxError) },
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{ "pkts tx discard", offsetof(struct UPT1_TxStats, pktsTxDiscard) },
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};
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/* per tq stats maintained by the driver */
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static const struct vmxnet3_stat_desc
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vmxnet3_tq_driver_stats[] = {
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/* description, offset */
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{"drv dropped tx total", offsetof(struct vmxnet3_tq_driver_stats,
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drop_total) },
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{ " too many frags", offsetof(struct vmxnet3_tq_driver_stats,
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drop_too_many_frags) },
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{ " giant hdr", offsetof(struct vmxnet3_tq_driver_stats,
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drop_oversized_hdr) },
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{ " hdr err", offsetof(struct vmxnet3_tq_driver_stats,
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drop_hdr_inspect_err) },
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{ " tso", offsetof(struct vmxnet3_tq_driver_stats,
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drop_tso) },
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{ "ring full", offsetof(struct vmxnet3_tq_driver_stats,
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tx_ring_full) },
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{ "pkts linearized", offsetof(struct vmxnet3_tq_driver_stats,
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linearized) },
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{ "hdr cloned", offsetof(struct vmxnet3_tq_driver_stats,
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copy_skb_header) },
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{ "giant hdr", offsetof(struct vmxnet3_tq_driver_stats,
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oversized_hdr) },
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};
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/* per rq stats maintained by the device */
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static const struct vmxnet3_stat_desc
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vmxnet3_rq_dev_stats[] = {
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{ "LRO pkts rx", offsetof(struct UPT1_RxStats, LROPktsRxOK) },
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{ "LRO byte rx", offsetof(struct UPT1_RxStats, LROBytesRxOK) },
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{ "ucast pkts rx", offsetof(struct UPT1_RxStats, ucastPktsRxOK) },
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{ "ucast bytes rx", offsetof(struct UPT1_RxStats, ucastBytesRxOK) },
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{ "mcast pkts rx", offsetof(struct UPT1_RxStats, mcastPktsRxOK) },
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{ "mcast bytes rx", offsetof(struct UPT1_RxStats, mcastBytesRxOK) },
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{ "bcast pkts rx", offsetof(struct UPT1_RxStats, bcastPktsRxOK) },
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{ "bcast bytes rx", offsetof(struct UPT1_RxStats, bcastBytesRxOK) },
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{ "pkts rx out of buf", offsetof(struct UPT1_RxStats, pktsRxOutOfBuf) },
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{ "pkts rx err", offsetof(struct UPT1_RxStats, pktsRxError) },
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};
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/* per rq stats maintained by the driver */
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static const struct vmxnet3_stat_desc
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vmxnet3_rq_driver_stats[] = {
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/* description, offset */
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{ "drv dropped rx total", offsetof(struct vmxnet3_rq_driver_stats,
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drop_total) },
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{ " err", offsetof(struct vmxnet3_rq_driver_stats,
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drop_err) },
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{ " fcs", offsetof(struct vmxnet3_rq_driver_stats,
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drop_fcs) },
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{ "rx buf alloc fail", offsetof(struct vmxnet3_rq_driver_stats,
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rx_buf_alloc_failure) },
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};
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/* gloabl stats maintained by the driver */
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static const struct vmxnet3_stat_desc
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vmxnet3_global_stats[] = {
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/* description, offset */
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{ "tx timeout count", offsetof(struct vmxnet3_adapter,
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tx_timeout_count) }
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};
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struct net_device_stats *
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vmxnet3_get_stats(struct net_device *netdev)
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{
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struct vmxnet3_adapter *adapter;
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struct vmxnet3_tq_driver_stats *drvTxStats;
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struct vmxnet3_rq_driver_stats *drvRxStats;
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struct UPT1_TxStats *devTxStats;
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struct UPT1_RxStats *devRxStats;
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struct net_device_stats *net_stats = &netdev->stats;
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adapter = netdev_priv(netdev);
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/* Collect the dev stats into the shared area */
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VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
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/* Assuming that we have a single queue device */
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devTxStats = &adapter->tqd_start->stats;
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devRxStats = &adapter->rqd_start->stats;
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/* Get access to the driver stats per queue */
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drvTxStats = &adapter->tx_queue.stats;
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drvRxStats = &adapter->rx_queue.stats;
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memset(net_stats, 0, sizeof(*net_stats));
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net_stats->rx_packets = devRxStats->ucastPktsRxOK +
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devRxStats->mcastPktsRxOK +
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devRxStats->bcastPktsRxOK;
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net_stats->tx_packets = devTxStats->ucastPktsTxOK +
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devTxStats->mcastPktsTxOK +
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devTxStats->bcastPktsTxOK;
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net_stats->rx_bytes = devRxStats->ucastBytesRxOK +
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devRxStats->mcastBytesRxOK +
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devRxStats->bcastBytesRxOK;
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net_stats->tx_bytes = devTxStats->ucastBytesTxOK +
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devTxStats->mcastBytesTxOK +
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devTxStats->bcastBytesTxOK;
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net_stats->rx_errors = devRxStats->pktsRxError;
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net_stats->tx_errors = devTxStats->pktsTxError;
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net_stats->rx_dropped = drvRxStats->drop_total;
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net_stats->tx_dropped = drvTxStats->drop_total;
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net_stats->multicast = devRxStats->mcastPktsRxOK;
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return net_stats;
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}
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static int
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vmxnet3_get_sset_count(struct net_device *netdev, int sset)
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{
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switch (sset) {
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case ETH_SS_STATS:
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return ARRAY_SIZE(vmxnet3_tq_dev_stats) +
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ARRAY_SIZE(vmxnet3_tq_driver_stats) +
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ARRAY_SIZE(vmxnet3_rq_dev_stats) +
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ARRAY_SIZE(vmxnet3_rq_driver_stats) +
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ARRAY_SIZE(vmxnet3_global_stats);
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default:
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return -EOPNOTSUPP;
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}
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}
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static int
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vmxnet3_get_regs_len(struct net_device *netdev)
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{
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return 20 * sizeof(u32);
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}
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static void
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vmxnet3_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo)
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{
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struct vmxnet3_adapter *adapter = netdev_priv(netdev);
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strlcpy(drvinfo->driver, vmxnet3_driver_name, sizeof(drvinfo->driver));
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drvinfo->driver[sizeof(drvinfo->driver) - 1] = '\0';
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strlcpy(drvinfo->version, VMXNET3_DRIVER_VERSION_REPORT,
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sizeof(drvinfo->version));
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drvinfo->driver[sizeof(drvinfo->version) - 1] = '\0';
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strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
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drvinfo->fw_version[sizeof(drvinfo->fw_version) - 1] = '\0';
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strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
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ETHTOOL_BUSINFO_LEN);
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drvinfo->n_stats = vmxnet3_get_sset_count(netdev, ETH_SS_STATS);
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drvinfo->testinfo_len = 0;
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drvinfo->eedump_len = 0;
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drvinfo->regdump_len = vmxnet3_get_regs_len(netdev);
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}
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static void
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vmxnet3_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
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{
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if (stringset == ETH_SS_STATS) {
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int i;
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for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_dev_stats); i++) {
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memcpy(buf, vmxnet3_tq_dev_stats[i].desc,
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ETH_GSTRING_LEN);
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buf += ETH_GSTRING_LEN;
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}
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for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_driver_stats); i++) {
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memcpy(buf, vmxnet3_tq_driver_stats[i].desc,
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ETH_GSTRING_LEN);
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buf += ETH_GSTRING_LEN;
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}
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for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_dev_stats); i++) {
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memcpy(buf, vmxnet3_rq_dev_stats[i].desc,
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ETH_GSTRING_LEN);
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buf += ETH_GSTRING_LEN;
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}
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for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_driver_stats); i++) {
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memcpy(buf, vmxnet3_rq_driver_stats[i].desc,
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ETH_GSTRING_LEN);
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buf += ETH_GSTRING_LEN;
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}
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for (i = 0; i < ARRAY_SIZE(vmxnet3_global_stats); i++) {
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memcpy(buf, vmxnet3_global_stats[i].desc,
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ETH_GSTRING_LEN);
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buf += ETH_GSTRING_LEN;
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}
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}
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}
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static u32
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vmxnet3_get_flags(struct net_device *netdev) {
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return netdev->features;
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}
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static int
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vmxnet3_set_flags(struct net_device *netdev, u32 data) {
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struct vmxnet3_adapter *adapter = netdev_priv(netdev);
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u8 lro_requested = (data & ETH_FLAG_LRO) == 0 ? 0 : 1;
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u8 lro_present = (netdev->features & NETIF_F_LRO) == 0 ? 0 : 1;
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if (lro_requested ^ lro_present) {
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/* toggle the LRO feature*/
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netdev->features ^= NETIF_F_LRO;
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/* update harware LRO capability accordingly */
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if (lro_requested)
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adapter->shared->devRead.misc.uptFeatures &= UPT1_F_LRO;
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else
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adapter->shared->devRead.misc.uptFeatures &=
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~UPT1_F_LRO;
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VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
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VMXNET3_CMD_UPDATE_FEATURE);
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}
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return 0;
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}
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static void
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vmxnet3_get_ethtool_stats(struct net_device *netdev,
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struct ethtool_stats *stats, u64 *buf)
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{
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struct vmxnet3_adapter *adapter = netdev_priv(netdev);
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u8 *base;
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int i;
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VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
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/* this does assume each counter is 64-bit wide */
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base = (u8 *)&adapter->tqd_start->stats;
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for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_dev_stats); i++)
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*buf++ = *(u64 *)(base + vmxnet3_tq_dev_stats[i].offset);
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base = (u8 *)&adapter->tx_queue.stats;
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for (i = 0; i < ARRAY_SIZE(vmxnet3_tq_driver_stats); i++)
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*buf++ = *(u64 *)(base + vmxnet3_tq_driver_stats[i].offset);
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base = (u8 *)&adapter->rqd_start->stats;
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for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_dev_stats); i++)
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*buf++ = *(u64 *)(base + vmxnet3_rq_dev_stats[i].offset);
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base = (u8 *)&adapter->rx_queue.stats;
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for (i = 0; i < ARRAY_SIZE(vmxnet3_rq_driver_stats); i++)
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*buf++ = *(u64 *)(base + vmxnet3_rq_driver_stats[i].offset);
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base = (u8 *)adapter;
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for (i = 0; i < ARRAY_SIZE(vmxnet3_global_stats); i++)
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*buf++ = *(u64 *)(base + vmxnet3_global_stats[i].offset);
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}
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static void
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vmxnet3_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
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{
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struct vmxnet3_adapter *adapter = netdev_priv(netdev);
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u32 *buf = p;
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memset(p, 0, vmxnet3_get_regs_len(netdev));
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regs->version = 1;
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/* Update vmxnet3_get_regs_len if we want to dump more registers */
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/* make each ring use multiple of 16 bytes */
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buf[0] = adapter->tx_queue.tx_ring.next2fill;
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buf[1] = adapter->tx_queue.tx_ring.next2comp;
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buf[2] = adapter->tx_queue.tx_ring.gen;
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buf[3] = 0;
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buf[4] = adapter->tx_queue.comp_ring.next2proc;
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buf[5] = adapter->tx_queue.comp_ring.gen;
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buf[6] = adapter->tx_queue.stopped;
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buf[7] = 0;
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buf[8] = adapter->rx_queue.rx_ring[0].next2fill;
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buf[9] = adapter->rx_queue.rx_ring[0].next2comp;
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buf[10] = adapter->rx_queue.rx_ring[0].gen;
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buf[11] = 0;
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buf[12] = adapter->rx_queue.rx_ring[1].next2fill;
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buf[13] = adapter->rx_queue.rx_ring[1].next2comp;
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buf[14] = adapter->rx_queue.rx_ring[1].gen;
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buf[15] = 0;
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buf[16] = adapter->rx_queue.comp_ring.next2proc;
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buf[17] = adapter->rx_queue.comp_ring.gen;
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buf[18] = 0;
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buf[19] = 0;
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}
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static void
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vmxnet3_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
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{
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struct vmxnet3_adapter *adapter = netdev_priv(netdev);
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wol->supported = WAKE_UCAST | WAKE_ARP | WAKE_MAGIC;
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wol->wolopts = adapter->wol;
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}
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static int
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vmxnet3_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
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{
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struct vmxnet3_adapter *adapter = netdev_priv(netdev);
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if (wol->wolopts & (WAKE_PHY | WAKE_MCAST | WAKE_BCAST |
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WAKE_MAGICSECURE)) {
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return -EOPNOTSUPP;
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}
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adapter->wol = wol->wolopts;
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device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
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return 0;
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}
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static int
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vmxnet3_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
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{
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struct vmxnet3_adapter *adapter = netdev_priv(netdev);
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ecmd->supported = SUPPORTED_10000baseT_Full | SUPPORTED_1000baseT_Full |
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SUPPORTED_TP;
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ecmd->advertising = ADVERTISED_TP;
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ecmd->port = PORT_TP;
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ecmd->transceiver = XCVR_INTERNAL;
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if (adapter->link_speed) {
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ecmd->speed = adapter->link_speed;
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ecmd->duplex = DUPLEX_FULL;
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} else {
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ecmd->speed = -1;
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ecmd->duplex = -1;
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}
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return 0;
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}
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static void
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vmxnet3_get_ringparam(struct net_device *netdev,
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struct ethtool_ringparam *param)
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{
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struct vmxnet3_adapter *adapter = netdev_priv(netdev);
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param->rx_max_pending = VMXNET3_RX_RING_MAX_SIZE;
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param->tx_max_pending = VMXNET3_TX_RING_MAX_SIZE;
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param->rx_mini_max_pending = 0;
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param->rx_jumbo_max_pending = 0;
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param->rx_pending = adapter->rx_queue.rx_ring[0].size;
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param->tx_pending = adapter->tx_queue.tx_ring.size;
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param->rx_mini_pending = 0;
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param->rx_jumbo_pending = 0;
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}
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static int
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vmxnet3_set_ringparam(struct net_device *netdev,
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struct ethtool_ringparam *param)
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{
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struct vmxnet3_adapter *adapter = netdev_priv(netdev);
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u32 new_tx_ring_size, new_rx_ring_size;
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u32 sz;
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int err = 0;
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|
|
|
if (param->tx_pending == 0 || param->tx_pending >
|
|
VMXNET3_TX_RING_MAX_SIZE)
|
|
return -EINVAL;
|
|
|
|
if (param->rx_pending == 0 || param->rx_pending >
|
|
VMXNET3_RX_RING_MAX_SIZE)
|
|
return -EINVAL;
|
|
|
|
|
|
/* round it up to a multiple of VMXNET3_RING_SIZE_ALIGN */
|
|
new_tx_ring_size = (param->tx_pending + VMXNET3_RING_SIZE_MASK) &
|
|
~VMXNET3_RING_SIZE_MASK;
|
|
new_tx_ring_size = min_t(u32, new_tx_ring_size,
|
|
VMXNET3_TX_RING_MAX_SIZE);
|
|
if (new_tx_ring_size > VMXNET3_TX_RING_MAX_SIZE || (new_tx_ring_size %
|
|
VMXNET3_RING_SIZE_ALIGN) != 0)
|
|
return -EINVAL;
|
|
|
|
/* ring0 has to be a multiple of
|
|
* rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN
|
|
*/
|
|
sz = adapter->rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN;
|
|
new_rx_ring_size = (param->rx_pending + sz - 1) / sz * sz;
|
|
new_rx_ring_size = min_t(u32, new_rx_ring_size,
|
|
VMXNET3_RX_RING_MAX_SIZE / sz * sz);
|
|
if (new_rx_ring_size > VMXNET3_RX_RING_MAX_SIZE || (new_rx_ring_size %
|
|
sz) != 0)
|
|
return -EINVAL;
|
|
|
|
if (new_tx_ring_size == adapter->tx_queue.tx_ring.size &&
|
|
new_rx_ring_size == adapter->rx_queue.rx_ring[0].size) {
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Reset_work may be in the middle of resetting the device, wait for its
|
|
* completion.
|
|
*/
|
|
while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state))
|
|
msleep(1);
|
|
|
|
if (netif_running(netdev)) {
|
|
vmxnet3_quiesce_dev(adapter);
|
|
vmxnet3_reset_dev(adapter);
|
|
|
|
/* recreate the rx queue and the tx queue based on the
|
|
* new sizes */
|
|
vmxnet3_tq_destroy(&adapter->tx_queue, adapter);
|
|
vmxnet3_rq_destroy(&adapter->rx_queue, adapter);
|
|
|
|
err = vmxnet3_create_queues(adapter, new_tx_ring_size,
|
|
new_rx_ring_size, VMXNET3_DEF_RX_RING_SIZE);
|
|
if (err) {
|
|
/* failed, most likely because of OOM, try default
|
|
* size */
|
|
printk(KERN_ERR "%s: failed to apply new sizes, try the"
|
|
" default ones\n", netdev->name);
|
|
err = vmxnet3_create_queues(adapter,
|
|
VMXNET3_DEF_TX_RING_SIZE,
|
|
VMXNET3_DEF_RX_RING_SIZE,
|
|
VMXNET3_DEF_RX_RING_SIZE);
|
|
if (err) {
|
|
printk(KERN_ERR "%s: failed to create queues "
|
|
"with default sizes. Closing it\n",
|
|
netdev->name);
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
err = vmxnet3_activate_dev(adapter);
|
|
if (err)
|
|
printk(KERN_ERR "%s: failed to re-activate, error %d."
|
|
" Closing it\n", netdev->name, err);
|
|
}
|
|
|
|
out:
|
|
clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state);
|
|
if (err)
|
|
vmxnet3_force_close(adapter);
|
|
|
|
return err;
|
|
}
|
|
|
|
|
|
static struct ethtool_ops vmxnet3_ethtool_ops = {
|
|
.get_settings = vmxnet3_get_settings,
|
|
.get_drvinfo = vmxnet3_get_drvinfo,
|
|
.get_regs_len = vmxnet3_get_regs_len,
|
|
.get_regs = vmxnet3_get_regs,
|
|
.get_wol = vmxnet3_get_wol,
|
|
.set_wol = vmxnet3_set_wol,
|
|
.get_link = ethtool_op_get_link,
|
|
.get_rx_csum = vmxnet3_get_rx_csum,
|
|
.set_rx_csum = vmxnet3_set_rx_csum,
|
|
.get_tx_csum = ethtool_op_get_tx_csum,
|
|
.set_tx_csum = ethtool_op_set_tx_hw_csum,
|
|
.get_sg = ethtool_op_get_sg,
|
|
.set_sg = ethtool_op_set_sg,
|
|
.get_tso = ethtool_op_get_tso,
|
|
.set_tso = ethtool_op_set_tso,
|
|
.get_strings = vmxnet3_get_strings,
|
|
.get_flags = vmxnet3_get_flags,
|
|
.set_flags = vmxnet3_set_flags,
|
|
.get_sset_count = vmxnet3_get_sset_count,
|
|
.get_ethtool_stats = vmxnet3_get_ethtool_stats,
|
|
.get_ringparam = vmxnet3_get_ringparam,
|
|
.set_ringparam = vmxnet3_set_ringparam,
|
|
};
|
|
|
|
void vmxnet3_set_ethtool_ops(struct net_device *netdev)
|
|
{
|
|
SET_ETHTOOL_OPS(netdev, &vmxnet3_ethtool_ops);
|
|
}
|