![Yevgeny Petrilin](/assets/img/avatar_default.png)
The Mellanox ConnectX can operate as an InfiniBand adapter, as an Ethernet NIC, or as a Fibre Channel (FC) HBA. The kernel has a low-level driver, mlx4_core, which handles multiplexing access to the device, and there is also already an InfiniBad driver, mlx4_ib. This patch adds a new driver, mlx4_en, which implements a standard Ethernet NIC driver. Signed-off-by: Liran Liss <liranl@mellanox.co.il> Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
481 lines
15 KiB
C
481 lines
15 KiB
C
/*
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* Copyright (c) 2007 Mellanox Technologies. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/ethtool.h>
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#include <linux/netdevice.h>
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#include "mlx4_en.h"
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#include "en_port.h"
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#define MLX4_EN_PARM_INT(X, def_val, desc) \
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static unsigned int X = def_val;\
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module_param(X , uint, 0444); \
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MODULE_PARM_DESC(X, desc);
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/*
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* Device scope module parameters
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*/
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/* Use a XOR rathern than Toeplitz hash function for RSS */
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MLX4_EN_PARM_INT(rss_xor, 0, "Use XOR hash function for RSS");
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/* RSS hash type mask - default to <saddr, daddr, sport, dport> */
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MLX4_EN_PARM_INT(rss_mask, 0xf, "RSS hash type bitmask");
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/* Number of LRO sessions per Rx ring (rounded up to a power of two) */
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MLX4_EN_PARM_INT(num_lro, MLX4_EN_MAX_LRO_DESCRIPTORS,
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"Number of LRO sessions per ring or disabled (0)");
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/* Priority pausing */
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MLX4_EN_PARM_INT(pptx, MLX4_EN_DEF_TX_PAUSE,
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"Pause policy on TX: 0 never generate pause frames "
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"1 generate pause frames according to RX buffer threshold");
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MLX4_EN_PARM_INT(pprx, MLX4_EN_DEF_RX_PAUSE,
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"Pause policy on RX: 0 ignore received pause frames "
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"1 respect received pause frames");
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MLX4_EN_PARM_INT(pfctx, 0, "Priority based Flow Control policy on TX[7:0]."
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" Per priority bit mask");
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MLX4_EN_PARM_INT(pfcrx, 0, "Priority based Flow Control policy on RX[7:0]."
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" Per priority bit mask");
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/* Interrupt moderation tunning */
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MLX4_EN_PARM_INT(rx_moder_cnt, MLX4_EN_AUTO_CONF,
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"Max coalesced descriptors for Rx interrupt moderation");
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MLX4_EN_PARM_INT(rx_moder_time, MLX4_EN_AUTO_CONF,
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"Timeout following last packet for Rx interrupt moderation");
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MLX4_EN_PARM_INT(auto_moder, 1, "Enable dynamic interrupt moderation");
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MLX4_EN_PARM_INT(rx_ring_num1, 0, "Number or Rx rings for port 1 (0 = #cores)");
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MLX4_EN_PARM_INT(rx_ring_num2, 0, "Number or Rx rings for port 2 (0 = #cores)");
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MLX4_EN_PARM_INT(tx_ring_size1, MLX4_EN_AUTO_CONF, "Tx ring size for port 1");
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MLX4_EN_PARM_INT(tx_ring_size2, MLX4_EN_AUTO_CONF, "Tx ring size for port 2");
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MLX4_EN_PARM_INT(rx_ring_size1, MLX4_EN_AUTO_CONF, "Rx ring size for port 1");
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MLX4_EN_PARM_INT(rx_ring_size2, MLX4_EN_AUTO_CONF, "Rx ring size for port 2");
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int mlx4_en_get_profile(struct mlx4_en_dev *mdev)
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{
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struct mlx4_en_profile *params = &mdev->profile;
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params->rx_moder_cnt = min_t(int, rx_moder_cnt, MLX4_EN_AUTO_CONF);
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params->rx_moder_time = min_t(int, rx_moder_time, MLX4_EN_AUTO_CONF);
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params->auto_moder = auto_moder;
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params->rss_xor = (rss_xor != 0);
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params->rss_mask = rss_mask & 0x1f;
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params->num_lro = min_t(int, num_lro , MLX4_EN_MAX_LRO_DESCRIPTORS);
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params->rx_pause = pprx;
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params->rx_ppp = pfcrx;
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params->tx_pause = pptx;
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params->tx_ppp = pfctx;
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if (params->rx_ppp || params->tx_ppp) {
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params->prof[1].tx_ring_num = MLX4_EN_TX_RING_NUM;
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params->prof[2].tx_ring_num = MLX4_EN_TX_RING_NUM;
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} else {
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params->prof[1].tx_ring_num = 1;
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params->prof[2].tx_ring_num = 1;
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}
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params->prof[1].rx_ring_num = min_t(int, rx_ring_num1, MAX_RX_RINGS);
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params->prof[2].rx_ring_num = min_t(int, rx_ring_num2, MAX_RX_RINGS);
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if (tx_ring_size1 == MLX4_EN_AUTO_CONF)
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tx_ring_size1 = MLX4_EN_DEF_TX_RING_SIZE;
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params->prof[1].tx_ring_size =
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(tx_ring_size1 < MLX4_EN_MIN_TX_SIZE) ?
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MLX4_EN_MIN_TX_SIZE : roundup_pow_of_two(tx_ring_size1);
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if (tx_ring_size2 == MLX4_EN_AUTO_CONF)
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tx_ring_size2 = MLX4_EN_DEF_TX_RING_SIZE;
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params->prof[2].tx_ring_size =
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(tx_ring_size2 < MLX4_EN_MIN_TX_SIZE) ?
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MLX4_EN_MIN_TX_SIZE : roundup_pow_of_two(tx_ring_size2);
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if (rx_ring_size1 == MLX4_EN_AUTO_CONF)
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rx_ring_size1 = MLX4_EN_DEF_RX_RING_SIZE;
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params->prof[1].rx_ring_size =
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(rx_ring_size1 < MLX4_EN_MIN_RX_SIZE) ?
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MLX4_EN_MIN_RX_SIZE : roundup_pow_of_two(rx_ring_size1);
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if (rx_ring_size2 == MLX4_EN_AUTO_CONF)
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rx_ring_size2 = MLX4_EN_DEF_RX_RING_SIZE;
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params->prof[2].rx_ring_size =
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(rx_ring_size2 < MLX4_EN_MIN_RX_SIZE) ?
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MLX4_EN_MIN_RX_SIZE : roundup_pow_of_two(rx_ring_size2);
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return 0;
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}
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/*
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* Ethtool support
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*/
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static void mlx4_en_update_lro_stats(struct mlx4_en_priv *priv)
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{
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int i;
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priv->port_stats.lro_aggregated = 0;
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priv->port_stats.lro_flushed = 0;
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priv->port_stats.lro_no_desc = 0;
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for (i = 0; i < priv->rx_ring_num; i++) {
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priv->port_stats.lro_aggregated += priv->rx_ring[i].lro.stats.aggregated;
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priv->port_stats.lro_flushed += priv->rx_ring[i].lro.stats.flushed;
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priv->port_stats.lro_no_desc += priv->rx_ring[i].lro.stats.no_desc;
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}
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}
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static void
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mlx4_en_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *drvinfo)
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{
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struct mlx4_en_priv *priv = netdev_priv(dev);
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struct mlx4_en_dev *mdev = priv->mdev;
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sprintf(drvinfo->driver, DRV_NAME " (%s)", mdev->dev->board_id);
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strncpy(drvinfo->version, DRV_VERSION " (" DRV_RELDATE ")", 32);
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sprintf(drvinfo->fw_version, "%d.%d.%d",
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(u16) (mdev->dev->caps.fw_ver >> 32),
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(u16) ((mdev->dev->caps.fw_ver >> 16) & 0xffff),
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(u16) (mdev->dev->caps.fw_ver & 0xffff));
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strncpy(drvinfo->bus_info, pci_name(mdev->dev->pdev), 32);
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drvinfo->n_stats = 0;
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drvinfo->regdump_len = 0;
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drvinfo->eedump_len = 0;
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}
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static u32 mlx4_en_get_tso(struct net_device *dev)
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{
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return (dev->features & NETIF_F_TSO) != 0;
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}
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static int mlx4_en_set_tso(struct net_device *dev, u32 data)
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{
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struct mlx4_en_priv *priv = netdev_priv(dev);
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if (data) {
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if (!priv->mdev->LSO_support)
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return -EPERM;
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dev->features |= (NETIF_F_TSO | NETIF_F_TSO6);
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} else
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dev->features &= ~(NETIF_F_TSO | NETIF_F_TSO6);
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return 0;
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}
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static u32 mlx4_en_get_rx_csum(struct net_device *dev)
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{
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struct mlx4_en_priv *priv = netdev_priv(dev);
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return priv->rx_csum;
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}
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static int mlx4_en_set_rx_csum(struct net_device *dev, u32 data)
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{
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struct mlx4_en_priv *priv = netdev_priv(dev);
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priv->rx_csum = (data != 0);
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return 0;
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}
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static const char main_strings[][ETH_GSTRING_LEN] = {
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"rx_packets", "tx_packets", "rx_bytes", "tx_bytes", "rx_errors",
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"tx_errors", "rx_dropped", "tx_dropped", "multicast", "collisions",
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"rx_length_errors", "rx_over_errors", "rx_crc_errors",
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"rx_frame_errors", "rx_fifo_errors", "rx_missed_errors",
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"tx_aborted_errors", "tx_carrier_errors", "tx_fifo_errors",
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"tx_heartbeat_errors", "tx_window_errors",
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/* port statistics */
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"lro_aggregated", "lro_flushed", "lro_no_desc", "tso_packets",
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"queue_stopped", "wake_queue", "tx_timeout", "rx_alloc_failed",
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"rx_csum_good", "rx_csum_none", "tx_chksum_offload",
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/* packet statistics */
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"broadcast", "rx_prio_0", "rx_prio_1", "rx_prio_2", "rx_prio_3",
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"rx_prio_4", "rx_prio_5", "rx_prio_6", "rx_prio_7", "tx_prio_0",
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"tx_prio_1", "tx_prio_2", "tx_prio_3", "tx_prio_4", "tx_prio_5",
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"tx_prio_6", "tx_prio_7",
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};
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#define NUM_MAIN_STATS 21
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#define NUM_ALL_STATS (NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PKT_STATS + NUM_PERF_STATS)
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static u32 mlx4_en_get_msglevel(struct net_device *dev)
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{
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return ((struct mlx4_en_priv *) netdev_priv(dev))->msg_enable;
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}
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static void mlx4_en_set_msglevel(struct net_device *dev, u32 val)
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{
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((struct mlx4_en_priv *) netdev_priv(dev))->msg_enable = val;
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}
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static void mlx4_en_get_wol(struct net_device *netdev,
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struct ethtool_wolinfo *wol)
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{
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wol->supported = 0;
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wol->wolopts = 0;
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return;
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}
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static int mlx4_en_get_sset_count(struct net_device *dev, int sset)
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{
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struct mlx4_en_priv *priv = netdev_priv(dev);
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if (sset != ETH_SS_STATS)
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return -EOPNOTSUPP;
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return NUM_ALL_STATS + (priv->tx_ring_num + priv->rx_ring_num) * 2;
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}
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static void mlx4_en_get_ethtool_stats(struct net_device *dev,
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struct ethtool_stats *stats, uint64_t *data)
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{
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struct mlx4_en_priv *priv = netdev_priv(dev);
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int index = 0;
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int i;
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spin_lock_bh(&priv->stats_lock);
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mlx4_en_update_lro_stats(priv);
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for (i = 0; i < NUM_MAIN_STATS; i++)
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data[index++] = ((unsigned long *) &priv->stats)[i];
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for (i = 0; i < NUM_PORT_STATS; i++)
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data[index++] = ((unsigned long *) &priv->port_stats)[i];
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for (i = 0; i < priv->tx_ring_num; i++) {
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data[index++] = priv->tx_ring[i].packets;
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data[index++] = priv->tx_ring[i].bytes;
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}
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for (i = 0; i < priv->rx_ring_num; i++) {
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data[index++] = priv->rx_ring[i].packets;
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data[index++] = priv->rx_ring[i].bytes;
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}
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for (i = 0; i < NUM_PKT_STATS; i++)
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data[index++] = ((unsigned long *) &priv->pkstats)[i];
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spin_unlock_bh(&priv->stats_lock);
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}
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static void mlx4_en_get_strings(struct net_device *dev,
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uint32_t stringset, uint8_t *data)
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{
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struct mlx4_en_priv *priv = netdev_priv(dev);
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int index = 0;
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int i;
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if (stringset != ETH_SS_STATS)
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return;
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/* Add main counters */
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for (i = 0; i < NUM_MAIN_STATS; i++)
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strcpy(data + (index++) * ETH_GSTRING_LEN, main_strings[i]);
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for (i = 0; i < NUM_PORT_STATS; i++)
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strcpy(data + (index++) * ETH_GSTRING_LEN,
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main_strings[i + NUM_MAIN_STATS]);
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for (i = 0; i < priv->tx_ring_num; i++) {
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sprintf(data + (index++) * ETH_GSTRING_LEN,
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"tx%d_packets", i);
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sprintf(data + (index++) * ETH_GSTRING_LEN,
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"tx%d_bytes", i);
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}
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for (i = 0; i < priv->rx_ring_num; i++) {
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sprintf(data + (index++) * ETH_GSTRING_LEN,
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"rx%d_packets", i);
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sprintf(data + (index++) * ETH_GSTRING_LEN,
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"rx%d_bytes", i);
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}
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for (i = 0; i < NUM_PKT_STATS; i++)
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strcpy(data + (index++) * ETH_GSTRING_LEN,
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main_strings[i + NUM_MAIN_STATS + NUM_PORT_STATS]);
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}
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static int mlx4_en_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
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{
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cmd->autoneg = AUTONEG_DISABLE;
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cmd->supported = SUPPORTED_10000baseT_Full;
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cmd->advertising = SUPPORTED_10000baseT_Full;
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if (netif_carrier_ok(dev)) {
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cmd->speed = SPEED_10000;
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cmd->duplex = DUPLEX_FULL;
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} else {
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cmd->speed = -1;
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cmd->duplex = -1;
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}
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return 0;
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}
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static int mlx4_en_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
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{
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if ((cmd->autoneg == AUTONEG_ENABLE) ||
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(cmd->speed != SPEED_10000) || (cmd->duplex != DUPLEX_FULL))
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return -EINVAL;
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/* Nothing to change */
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return 0;
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}
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static int mlx4_en_get_coalesce(struct net_device *dev,
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struct ethtool_coalesce *coal)
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{
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struct mlx4_en_priv *priv = netdev_priv(dev);
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coal->tx_coalesce_usecs = 0;
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coal->tx_max_coalesced_frames = 0;
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coal->rx_coalesce_usecs = priv->rx_usecs;
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coal->rx_max_coalesced_frames = priv->rx_frames;
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coal->pkt_rate_low = priv->pkt_rate_low;
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coal->rx_coalesce_usecs_low = priv->rx_usecs_low;
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coal->pkt_rate_high = priv->pkt_rate_high;
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coal->rx_coalesce_usecs_high = priv->rx_usecs_high;
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coal->rate_sample_interval = priv->sample_interval;
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coal->use_adaptive_rx_coalesce = priv->adaptive_rx_coal;
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return 0;
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}
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static int mlx4_en_set_coalesce(struct net_device *dev,
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struct ethtool_coalesce *coal)
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{
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struct mlx4_en_priv *priv = netdev_priv(dev);
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int err, i;
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priv->rx_frames = (coal->rx_max_coalesced_frames ==
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MLX4_EN_AUTO_CONF) ?
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MLX4_EN_RX_COAL_TARGET /
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priv->dev->mtu + 1 :
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coal->rx_max_coalesced_frames;
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priv->rx_usecs = (coal->rx_coalesce_usecs ==
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MLX4_EN_AUTO_CONF) ?
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MLX4_EN_RX_COAL_TIME :
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coal->rx_coalesce_usecs;
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/* Set adaptive coalescing params */
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priv->pkt_rate_low = coal->pkt_rate_low;
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priv->rx_usecs_low = coal->rx_coalesce_usecs_low;
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priv->pkt_rate_high = coal->pkt_rate_high;
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priv->rx_usecs_high = coal->rx_coalesce_usecs_high;
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priv->sample_interval = coal->rate_sample_interval;
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priv->adaptive_rx_coal = coal->use_adaptive_rx_coalesce;
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priv->last_moder_time = MLX4_EN_AUTO_CONF;
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if (priv->adaptive_rx_coal)
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return 0;
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for (i = 0; i < priv->rx_ring_num; i++) {
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priv->rx_cq[i].moder_cnt = priv->rx_frames;
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priv->rx_cq[i].moder_time = priv->rx_usecs;
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err = mlx4_en_set_cq_moder(priv, &priv->rx_cq[i]);
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if (err)
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return err;
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}
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return 0;
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}
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static int mlx4_en_set_pauseparam(struct net_device *dev,
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struct ethtool_pauseparam *pause)
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{
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struct mlx4_en_priv *priv = netdev_priv(dev);
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struct mlx4_en_dev *mdev = priv->mdev;
|
|
int err;
|
|
|
|
mdev->profile.tx_pause = pause->tx_pause != 0;
|
|
mdev->profile.rx_pause = pause->rx_pause != 0;
|
|
err = mlx4_SET_PORT_general(mdev->dev, priv->port,
|
|
priv->rx_skb_size + ETH_FCS_LEN,
|
|
mdev->profile.tx_pause,
|
|
mdev->profile.tx_ppp,
|
|
mdev->profile.rx_pause,
|
|
mdev->profile.rx_ppp);
|
|
if (err)
|
|
mlx4_err(mdev, "Failed setting pause params to\n");
|
|
|
|
return err;
|
|
}
|
|
|
|
static void mlx4_en_get_pauseparam(struct net_device *dev,
|
|
struct ethtool_pauseparam *pause)
|
|
{
|
|
struct mlx4_en_priv *priv = netdev_priv(dev);
|
|
struct mlx4_en_dev *mdev = priv->mdev;
|
|
|
|
pause->tx_pause = mdev->profile.tx_pause;
|
|
pause->rx_pause = mdev->profile.rx_pause;
|
|
}
|
|
|
|
static void mlx4_en_get_ringparam(struct net_device *dev,
|
|
struct ethtool_ringparam *param)
|
|
{
|
|
struct mlx4_en_priv *priv = netdev_priv(dev);
|
|
struct mlx4_en_dev *mdev = priv->mdev;
|
|
|
|
memset(param, 0, sizeof(*param));
|
|
param->rx_max_pending = mdev->dev->caps.max_rq_sg;
|
|
param->tx_max_pending = mdev->dev->caps.max_sq_sg;
|
|
param->rx_pending = mdev->profile.prof[priv->port].rx_ring_size;
|
|
param->tx_pending = mdev->profile.prof[priv->port].tx_ring_size;
|
|
}
|
|
|
|
const struct ethtool_ops mlx4_en_ethtool_ops = {
|
|
.get_drvinfo = mlx4_en_get_drvinfo,
|
|
.get_settings = mlx4_en_get_settings,
|
|
.set_settings = mlx4_en_set_settings,
|
|
#ifdef NETIF_F_TSO
|
|
.get_tso = mlx4_en_get_tso,
|
|
.set_tso = mlx4_en_set_tso,
|
|
#endif
|
|
.get_sg = ethtool_op_get_sg,
|
|
.set_sg = ethtool_op_set_sg,
|
|
.get_link = ethtool_op_get_link,
|
|
.get_rx_csum = mlx4_en_get_rx_csum,
|
|
.set_rx_csum = mlx4_en_set_rx_csum,
|
|
.get_tx_csum = ethtool_op_get_tx_csum,
|
|
.set_tx_csum = ethtool_op_set_tx_ipv6_csum,
|
|
.get_strings = mlx4_en_get_strings,
|
|
.get_sset_count = mlx4_en_get_sset_count,
|
|
.get_ethtool_stats = mlx4_en_get_ethtool_stats,
|
|
.get_wol = mlx4_en_get_wol,
|
|
.get_msglevel = mlx4_en_get_msglevel,
|
|
.set_msglevel = mlx4_en_set_msglevel,
|
|
.get_coalesce = mlx4_en_get_coalesce,
|
|
.set_coalesce = mlx4_en_set_coalesce,
|
|
.get_pauseparam = mlx4_en_get_pauseparam,
|
|
.set_pauseparam = mlx4_en_set_pauseparam,
|
|
.get_ringparam = mlx4_en_get_ringparam,
|
|
.get_flags = ethtool_op_get_flags,
|
|
.set_flags = ethtool_op_set_flags,
|
|
};
|
|
|
|
|
|
|
|
|
|
|