![Yevgeny Petrilin](/assets/img/avatar_default.png)
We use 1:1 mapping between QPs and SRQs on receive side, so additional indirection level not required. Allocated the receive buffers for the RSS QPs. Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by: David S. Miller <davem@davemloft.net>
1078 lines
29 KiB
C
1078 lines
29 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/etherdevice.h>
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#include <linux/tcp.h>
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#include <linux/if_vlan.h>
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#include <linux/delay.h>
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#include <linux/mlx4/driver.h>
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#include <linux/mlx4/device.h>
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#include <linux/mlx4/cmd.h>
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#include <linux/mlx4/cq.h>
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#include "mlx4_en.h"
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#include "en_port.h"
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static void mlx4_en_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
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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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int err;
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en_dbg(HW, priv, "Registering VLAN group:%p\n", grp);
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priv->vlgrp = grp;
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mutex_lock(&mdev->state_lock);
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if (mdev->device_up && priv->port_up) {
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err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, grp);
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if (err)
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en_err(priv, "Failed configuring VLAN filter\n");
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}
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mutex_unlock(&mdev->state_lock);
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}
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static void mlx4_en_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
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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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int err;
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if (!priv->vlgrp)
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return;
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en_dbg(HW, priv, "adding VLAN:%d (vlgrp entry:%p)\n",
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vid, vlan_group_get_device(priv->vlgrp, vid));
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/* Add VID to port VLAN filter */
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mutex_lock(&mdev->state_lock);
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if (mdev->device_up && priv->port_up) {
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err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, priv->vlgrp);
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if (err)
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en_err(priv, "Failed configuring VLAN filter\n");
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}
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mutex_unlock(&mdev->state_lock);
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}
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static void mlx4_en_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
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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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int err;
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if (!priv->vlgrp)
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return;
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en_dbg(HW, priv, "Killing VID:%d (vlgrp:%p vlgrp entry:%p)\n",
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vid, priv->vlgrp, vlan_group_get_device(priv->vlgrp, vid));
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vlan_group_set_device(priv->vlgrp, vid, NULL);
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/* Remove VID from port VLAN filter */
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mutex_lock(&mdev->state_lock);
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if (mdev->device_up && priv->port_up) {
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err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, priv->vlgrp);
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if (err)
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en_err(priv, "Failed configuring VLAN filter\n");
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}
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mutex_unlock(&mdev->state_lock);
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}
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static u64 mlx4_en_mac_to_u64(u8 *addr)
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{
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u64 mac = 0;
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int i;
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for (i = 0; i < ETH_ALEN; i++) {
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mac <<= 8;
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mac |= addr[i];
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}
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return mac;
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}
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static int mlx4_en_set_mac(struct net_device *dev, void *addr)
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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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struct sockaddr *saddr = addr;
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if (!is_valid_ether_addr(saddr->sa_data))
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return -EADDRNOTAVAIL;
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memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
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priv->mac = mlx4_en_mac_to_u64(dev->dev_addr);
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queue_work(mdev->workqueue, &priv->mac_task);
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return 0;
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}
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static void mlx4_en_do_set_mac(struct work_struct *work)
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{
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struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
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mac_task);
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struct mlx4_en_dev *mdev = priv->mdev;
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int err = 0;
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mutex_lock(&mdev->state_lock);
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if (priv->port_up) {
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/* Remove old MAC and insert the new one */
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mlx4_unregister_mac(mdev->dev, priv->port, priv->mac_index);
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err = mlx4_register_mac(mdev->dev, priv->port,
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priv->mac, &priv->mac_index);
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if (err)
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en_err(priv, "Failed changing HW MAC address\n");
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} else
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en_dbg(HW, priv, "Port is down while "
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"registering mac, exiting...\n");
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mutex_unlock(&mdev->state_lock);
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}
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static void mlx4_en_clear_list(struct net_device *dev)
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{
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struct mlx4_en_priv *priv = netdev_priv(dev);
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struct dev_mc_list *plist = priv->mc_list;
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struct dev_mc_list *next;
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while (plist) {
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next = plist->next;
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kfree(plist);
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plist = next;
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}
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priv->mc_list = NULL;
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}
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static void mlx4_en_cache_mclist(struct net_device *dev)
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{
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struct mlx4_en_priv *priv = netdev_priv(dev);
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struct dev_mc_list *mclist;
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struct dev_mc_list *tmp;
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struct dev_mc_list *plist = NULL;
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for (mclist = dev->mc_list; mclist; mclist = mclist->next) {
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tmp = kmalloc(sizeof(struct dev_mc_list), GFP_ATOMIC);
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if (!tmp) {
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en_err(priv, "failed to allocate multicast list\n");
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mlx4_en_clear_list(dev);
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return;
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}
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memcpy(tmp, mclist, sizeof(struct dev_mc_list));
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tmp->next = NULL;
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if (plist)
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plist->next = tmp;
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else
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priv->mc_list = tmp;
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plist = tmp;
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}
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}
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static void mlx4_en_set_multicast(struct net_device *dev)
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{
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struct mlx4_en_priv *priv = netdev_priv(dev);
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if (!priv->port_up)
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return;
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queue_work(priv->mdev->workqueue, &priv->mcast_task);
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}
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static void mlx4_en_do_set_multicast(struct work_struct *work)
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{
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struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
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mcast_task);
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struct mlx4_en_dev *mdev = priv->mdev;
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struct net_device *dev = priv->dev;
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struct dev_mc_list *mclist;
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u64 mcast_addr = 0;
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int err;
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mutex_lock(&mdev->state_lock);
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if (!mdev->device_up) {
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en_dbg(HW, priv, "Card is not up, "
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"ignoring multicast change.\n");
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goto out;
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}
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if (!priv->port_up) {
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en_dbg(HW, priv, "Port is down, "
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"ignoring multicast change.\n");
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goto out;
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}
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/*
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* Promsicuous mode: disable all filters
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*/
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if (dev->flags & IFF_PROMISC) {
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if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
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if (netif_msg_rx_status(priv))
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en_warn(priv, "Entering promiscuous mode\n");
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priv->flags |= MLX4_EN_FLAG_PROMISC;
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/* Enable promiscouos mode */
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err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port,
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priv->base_qpn, 1);
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if (err)
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en_err(priv, "Failed enabling "
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"promiscous mode\n");
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/* Disable port multicast filter (unconditionally) */
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err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
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0, MLX4_MCAST_DISABLE);
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if (err)
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en_err(priv, "Failed disabling "
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"multicast filter\n");
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/* Disable port VLAN filter */
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err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, NULL);
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if (err)
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en_err(priv, "Failed disabling VLAN filter\n");
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}
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goto out;
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}
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/*
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* Not in promiscous mode
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*/
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if (priv->flags & MLX4_EN_FLAG_PROMISC) {
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if (netif_msg_rx_status(priv))
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en_warn(priv, "Leaving promiscuous mode\n");
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priv->flags &= ~MLX4_EN_FLAG_PROMISC;
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/* Disable promiscouos mode */
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err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port,
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priv->base_qpn, 0);
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if (err)
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en_err(priv, "Failed disabling promiscous mode\n");
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/* Enable port VLAN filter */
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err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, priv->vlgrp);
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if (err)
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en_err(priv, "Failed enabling VLAN filter\n");
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}
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/* Enable/disable the multicast filter according to IFF_ALLMULTI */
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if (dev->flags & IFF_ALLMULTI) {
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err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
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0, MLX4_MCAST_DISABLE);
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if (err)
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en_err(priv, "Failed disabling multicast filter\n");
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} else {
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err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
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0, MLX4_MCAST_DISABLE);
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if (err)
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en_err(priv, "Failed disabling multicast filter\n");
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/* Flush mcast filter and init it with broadcast address */
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mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
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1, MLX4_MCAST_CONFIG);
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/* Update multicast list - we cache all addresses so they won't
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* change while HW is updated holding the command semaphor */
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netif_tx_lock_bh(dev);
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mlx4_en_cache_mclist(dev);
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netif_tx_unlock_bh(dev);
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for (mclist = priv->mc_list; mclist; mclist = mclist->next) {
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mcast_addr = mlx4_en_mac_to_u64(mclist->dmi_addr);
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mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
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mcast_addr, 0, MLX4_MCAST_CONFIG);
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}
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err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
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0, MLX4_MCAST_ENABLE);
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if (err)
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en_err(priv, "Failed enabling multicast filter\n");
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mlx4_en_clear_list(dev);
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}
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out:
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mutex_unlock(&mdev->state_lock);
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}
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#ifdef CONFIG_NET_POLL_CONTROLLER
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static void mlx4_en_netpoll(struct net_device *dev)
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{
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struct mlx4_en_priv *priv = netdev_priv(dev);
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struct mlx4_en_cq *cq;
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unsigned long flags;
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int i;
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for (i = 0; i < priv->rx_ring_num; i++) {
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cq = &priv->rx_cq[i];
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spin_lock_irqsave(&cq->lock, flags);
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napi_synchronize(&cq->napi);
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mlx4_en_process_rx_cq(dev, cq, 0);
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spin_unlock_irqrestore(&cq->lock, flags);
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}
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}
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#endif
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static void mlx4_en_tx_timeout(struct net_device *dev)
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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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if (netif_msg_timer(priv))
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en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
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priv->port_stats.tx_timeout++;
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en_dbg(DRV, priv, "Scheduling watchdog\n");
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queue_work(mdev->workqueue, &priv->watchdog_task);
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}
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static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev)
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{
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struct mlx4_en_priv *priv = netdev_priv(dev);
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spin_lock_bh(&priv->stats_lock);
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memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats));
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spin_unlock_bh(&priv->stats_lock);
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return &priv->ret_stats;
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}
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static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
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{
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struct mlx4_en_cq *cq;
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int i;
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/* If we haven't received a specific coalescing setting
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* (module param), we set the moderation parameters as follows:
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* - moder_cnt is set to the number of mtu sized packets to
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* satisfy our coelsing target.
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* - moder_time is set to a fixed value.
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*/
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priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
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priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
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en_dbg(INTR, priv, "Default coalesing params for mtu:%d - "
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"rx_frames:%d rx_usecs:%d\n",
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priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
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/* Setup cq moderation params */
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for (i = 0; i < priv->rx_ring_num; i++) {
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cq = &priv->rx_cq[i];
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cq->moder_cnt = priv->rx_frames;
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cq->moder_time = priv->rx_usecs;
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}
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for (i = 0; i < priv->tx_ring_num; i++) {
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cq = &priv->tx_cq[i];
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cq->moder_cnt = MLX4_EN_TX_COAL_PKTS;
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cq->moder_time = MLX4_EN_TX_COAL_TIME;
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}
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/* Reset auto-moderation params */
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priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
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priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
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priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
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priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
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priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
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priv->adaptive_rx_coal = 1;
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priv->last_moder_time = MLX4_EN_AUTO_CONF;
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priv->last_moder_jiffies = 0;
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priv->last_moder_packets = 0;
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priv->last_moder_tx_packets = 0;
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priv->last_moder_bytes = 0;
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}
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static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
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{
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unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
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struct mlx4_en_cq *cq;
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unsigned long packets;
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unsigned long rate;
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unsigned long avg_pkt_size;
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unsigned long rx_packets;
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unsigned long rx_bytes;
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unsigned long rx_byte_diff;
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unsigned long tx_packets;
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unsigned long tx_pkt_diff;
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unsigned long rx_pkt_diff;
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int moder_time;
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int i, err;
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if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
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return;
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spin_lock_bh(&priv->stats_lock);
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rx_packets = priv->stats.rx_packets;
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rx_bytes = priv->stats.rx_bytes;
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tx_packets = priv->stats.tx_packets;
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spin_unlock_bh(&priv->stats_lock);
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if (!priv->last_moder_jiffies || !period)
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goto out;
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tx_pkt_diff = ((unsigned long) (tx_packets -
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priv->last_moder_tx_packets));
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rx_pkt_diff = ((unsigned long) (rx_packets -
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priv->last_moder_packets));
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packets = max(tx_pkt_diff, rx_pkt_diff);
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rx_byte_diff = rx_bytes - priv->last_moder_bytes;
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rx_byte_diff = rx_byte_diff ? rx_byte_diff : 1;
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rate = packets * HZ / period;
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avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
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priv->last_moder_bytes)) / packets : 0;
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/* Apply auto-moderation only when packet rate exceeds a rate that
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* it matters */
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if (rate > MLX4_EN_RX_RATE_THRESH) {
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/* If tx and rx packet rates are not balanced, assume that
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* traffic is mainly BW bound and apply maximum moderation.
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* Otherwise, moderate according to packet rate */
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if (2 * tx_pkt_diff > 3 * rx_pkt_diff &&
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rx_pkt_diff / rx_byte_diff <
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MLX4_EN_SMALL_PKT_SIZE)
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moder_time = priv->rx_usecs_low;
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else if (2 * rx_pkt_diff > 3 * tx_pkt_diff)
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moder_time = priv->rx_usecs_high;
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else {
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if (rate < priv->pkt_rate_low)
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moder_time = priv->rx_usecs_low;
|
|
else if (rate > priv->pkt_rate_high)
|
|
moder_time = priv->rx_usecs_high;
|
|
else
|
|
moder_time = (rate - priv->pkt_rate_low) *
|
|
(priv->rx_usecs_high - priv->rx_usecs_low) /
|
|
(priv->pkt_rate_high - priv->pkt_rate_low) +
|
|
priv->rx_usecs_low;
|
|
}
|
|
} else {
|
|
/* When packet rate is low, use default moderation rather than
|
|
* 0 to prevent interrupt storms if traffic suddenly increases */
|
|
moder_time = priv->rx_usecs;
|
|
}
|
|
|
|
en_dbg(INTR, priv, "tx rate:%lu rx_rate:%lu\n",
|
|
tx_pkt_diff * HZ / period, rx_pkt_diff * HZ / period);
|
|
|
|
en_dbg(INTR, priv, "Rx moder_time changed from:%d to %d period:%lu "
|
|
"[jiff] packets:%lu avg_pkt_size:%lu rate:%lu [p/s])\n",
|
|
priv->last_moder_time, moder_time, period, packets,
|
|
avg_pkt_size, rate);
|
|
|
|
if (moder_time != priv->last_moder_time) {
|
|
priv->last_moder_time = moder_time;
|
|
for (i = 0; i < priv->rx_ring_num; i++) {
|
|
cq = &priv->rx_cq[i];
|
|
cq->moder_time = moder_time;
|
|
err = mlx4_en_set_cq_moder(priv, cq);
|
|
if (err) {
|
|
en_err(priv, "Failed modifying moderation for cq:%d\n", i);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
out:
|
|
priv->last_moder_packets = rx_packets;
|
|
priv->last_moder_tx_packets = tx_packets;
|
|
priv->last_moder_bytes = rx_bytes;
|
|
priv->last_moder_jiffies = jiffies;
|
|
}
|
|
|
|
static void mlx4_en_do_get_stats(struct work_struct *work)
|
|
{
|
|
struct delayed_work *delay = to_delayed_work(work);
|
|
struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
|
|
stats_task);
|
|
struct mlx4_en_dev *mdev = priv->mdev;
|
|
int err;
|
|
|
|
err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
|
|
if (err)
|
|
en_dbg(HW, priv, "Could not update stats \n");
|
|
|
|
mutex_lock(&mdev->state_lock);
|
|
if (mdev->device_up) {
|
|
if (priv->port_up)
|
|
mlx4_en_auto_moderation(priv);
|
|
|
|
queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
|
|
}
|
|
mutex_unlock(&mdev->state_lock);
|
|
}
|
|
|
|
static void mlx4_en_linkstate(struct work_struct *work)
|
|
{
|
|
struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
|
|
linkstate_task);
|
|
struct mlx4_en_dev *mdev = priv->mdev;
|
|
int linkstate = priv->link_state;
|
|
|
|
mutex_lock(&mdev->state_lock);
|
|
/* If observable port state changed set carrier state and
|
|
* report to system log */
|
|
if (priv->last_link_state != linkstate) {
|
|
if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
|
|
en_dbg(LINK, priv, "Link Down\n");
|
|
netif_carrier_off(priv->dev);
|
|
} else {
|
|
en_dbg(LINK, priv, "Link Up\n");
|
|
netif_carrier_on(priv->dev);
|
|
}
|
|
}
|
|
priv->last_link_state = linkstate;
|
|
mutex_unlock(&mdev->state_lock);
|
|
}
|
|
|
|
|
|
int mlx4_en_start_port(struct net_device *dev)
|
|
{
|
|
struct mlx4_en_priv *priv = netdev_priv(dev);
|
|
struct mlx4_en_dev *mdev = priv->mdev;
|
|
struct mlx4_en_cq *cq;
|
|
struct mlx4_en_tx_ring *tx_ring;
|
|
int rx_index = 0;
|
|
int tx_index = 0;
|
|
int err = 0;
|
|
int i;
|
|
int j;
|
|
|
|
if (priv->port_up) {
|
|
en_dbg(DRV, priv, "start port called while port already up\n");
|
|
return 0;
|
|
}
|
|
|
|
/* Calculate Rx buf size */
|
|
dev->mtu = min(dev->mtu, priv->max_mtu);
|
|
mlx4_en_calc_rx_buf(dev);
|
|
en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
|
|
|
|
/* Configure rx cq's and rings */
|
|
err = mlx4_en_activate_rx_rings(priv);
|
|
if (err) {
|
|
en_err(priv, "Failed to activate RX rings\n");
|
|
return err;
|
|
}
|
|
for (i = 0; i < priv->rx_ring_num; i++) {
|
|
cq = &priv->rx_cq[i];
|
|
|
|
err = mlx4_en_activate_cq(priv, cq);
|
|
if (err) {
|
|
en_err(priv, "Failed activating Rx CQ\n");
|
|
goto cq_err;
|
|
}
|
|
for (j = 0; j < cq->size; j++)
|
|
cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
|
|
err = mlx4_en_set_cq_moder(priv, cq);
|
|
if (err) {
|
|
en_err(priv, "Failed setting cq moderation parameters");
|
|
mlx4_en_deactivate_cq(priv, cq);
|
|
goto cq_err;
|
|
}
|
|
mlx4_en_arm_cq(priv, cq);
|
|
priv->rx_ring[i].cqn = cq->mcq.cqn;
|
|
++rx_index;
|
|
}
|
|
|
|
err = mlx4_en_config_rss_steer(priv);
|
|
if (err) {
|
|
en_err(priv, "Failed configuring rss steering\n");
|
|
goto cq_err;
|
|
}
|
|
|
|
/* Configure tx cq's and rings */
|
|
for (i = 0; i < priv->tx_ring_num; i++) {
|
|
/* Configure cq */
|
|
cq = &priv->tx_cq[i];
|
|
err = mlx4_en_activate_cq(priv, cq);
|
|
if (err) {
|
|
en_err(priv, "Failed allocating Tx CQ\n");
|
|
goto tx_err;
|
|
}
|
|
err = mlx4_en_set_cq_moder(priv, cq);
|
|
if (err) {
|
|
en_err(priv, "Failed setting cq moderation parameters");
|
|
mlx4_en_deactivate_cq(priv, cq);
|
|
goto tx_err;
|
|
}
|
|
en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
|
|
cq->buf->wqe_index = cpu_to_be16(0xffff);
|
|
|
|
/* Configure ring */
|
|
tx_ring = &priv->tx_ring[i];
|
|
err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn);
|
|
if (err) {
|
|
en_err(priv, "Failed allocating Tx ring\n");
|
|
mlx4_en_deactivate_cq(priv, cq);
|
|
goto tx_err;
|
|
}
|
|
/* Set initial ownership of all Tx TXBBs to SW (1) */
|
|
for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
|
|
*((u32 *) (tx_ring->buf + j)) = 0xffffffff;
|
|
++tx_index;
|
|
}
|
|
|
|
/* Configure port */
|
|
err = mlx4_SET_PORT_general(mdev->dev, priv->port,
|
|
priv->rx_skb_size + ETH_FCS_LEN,
|
|
priv->prof->tx_pause,
|
|
priv->prof->tx_ppp,
|
|
priv->prof->rx_pause,
|
|
priv->prof->rx_ppp);
|
|
if (err) {
|
|
en_err(priv, "Failed setting port general configurations "
|
|
"for port %d, with error %d\n", priv->port, err);
|
|
goto tx_err;
|
|
}
|
|
/* Set default qp number */
|
|
err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
|
|
if (err) {
|
|
en_err(priv, "Failed setting default qp numbers\n");
|
|
goto tx_err;
|
|
}
|
|
/* Set port mac number */
|
|
en_dbg(DRV, priv, "Setting mac for port %d\n", priv->port);
|
|
err = mlx4_register_mac(mdev->dev, priv->port,
|
|
priv->mac, &priv->mac_index);
|
|
if (err) {
|
|
en_err(priv, "Failed setting port mac\n");
|
|
goto tx_err;
|
|
}
|
|
|
|
/* Init port */
|
|
en_dbg(HW, priv, "Initializing port\n");
|
|
err = mlx4_INIT_PORT(mdev->dev, priv->port);
|
|
if (err) {
|
|
en_err(priv, "Failed Initializing port\n");
|
|
goto mac_err;
|
|
}
|
|
|
|
/* Schedule multicast task to populate multicast list */
|
|
queue_work(mdev->workqueue, &priv->mcast_task);
|
|
|
|
priv->port_up = true;
|
|
netif_tx_start_all_queues(dev);
|
|
return 0;
|
|
|
|
mac_err:
|
|
mlx4_unregister_mac(mdev->dev, priv->port, priv->mac_index);
|
|
tx_err:
|
|
while (tx_index--) {
|
|
mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[tx_index]);
|
|
mlx4_en_deactivate_cq(priv, &priv->tx_cq[tx_index]);
|
|
}
|
|
|
|
mlx4_en_release_rss_steer(priv);
|
|
cq_err:
|
|
while (rx_index--)
|
|
mlx4_en_deactivate_cq(priv, &priv->rx_cq[rx_index]);
|
|
for (i = 0; i < priv->rx_ring_num; i++)
|
|
mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
|
|
|
|
return err; /* need to close devices */
|
|
}
|
|
|
|
|
|
void mlx4_en_stop_port(struct net_device *dev)
|
|
{
|
|
struct mlx4_en_priv *priv = netdev_priv(dev);
|
|
struct mlx4_en_dev *mdev = priv->mdev;
|
|
int i;
|
|
|
|
if (!priv->port_up) {
|
|
en_dbg(DRV, priv, "stop port called while port already down\n");
|
|
return;
|
|
}
|
|
|
|
/* Synchronize with tx routine */
|
|
netif_tx_lock_bh(dev);
|
|
netif_tx_stop_all_queues(dev);
|
|
netif_tx_unlock_bh(dev);
|
|
|
|
/* close port*/
|
|
priv->port_up = false;
|
|
mlx4_CLOSE_PORT(mdev->dev, priv->port);
|
|
|
|
/* Unregister Mac address for the port */
|
|
mlx4_unregister_mac(mdev->dev, priv->port, priv->mac_index);
|
|
|
|
/* Free TX Rings */
|
|
for (i = 0; i < priv->tx_ring_num; i++) {
|
|
mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[i]);
|
|
mlx4_en_deactivate_cq(priv, &priv->tx_cq[i]);
|
|
}
|
|
msleep(10);
|
|
|
|
for (i = 0; i < priv->tx_ring_num; i++)
|
|
mlx4_en_free_tx_buf(dev, &priv->tx_ring[i]);
|
|
|
|
/* Free RSS qps */
|
|
mlx4_en_release_rss_steer(priv);
|
|
|
|
/* Free RX Rings */
|
|
for (i = 0; i < priv->rx_ring_num; i++) {
|
|
mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
|
|
while (test_bit(NAPI_STATE_SCHED, &priv->rx_cq[i].napi.state))
|
|
msleep(1);
|
|
mlx4_en_deactivate_cq(priv, &priv->rx_cq[i]);
|
|
}
|
|
}
|
|
|
|
static void mlx4_en_restart(struct work_struct *work)
|
|
{
|
|
struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
|
|
watchdog_task);
|
|
struct mlx4_en_dev *mdev = priv->mdev;
|
|
struct net_device *dev = priv->dev;
|
|
|
|
en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
|
|
|
|
mutex_lock(&mdev->state_lock);
|
|
if (priv->port_up) {
|
|
mlx4_en_stop_port(dev);
|
|
if (mlx4_en_start_port(dev))
|
|
en_err(priv, "Failed restarting port %d\n", priv->port);
|
|
}
|
|
mutex_unlock(&mdev->state_lock);
|
|
}
|
|
|
|
|
|
static int mlx4_en_open(struct net_device *dev)
|
|
{
|
|
struct mlx4_en_priv *priv = netdev_priv(dev);
|
|
struct mlx4_en_dev *mdev = priv->mdev;
|
|
int i;
|
|
int err = 0;
|
|
|
|
mutex_lock(&mdev->state_lock);
|
|
|
|
if (!mdev->device_up) {
|
|
en_err(priv, "Cannot open - device down/disabled\n");
|
|
err = -EBUSY;
|
|
goto out;
|
|
}
|
|
|
|
/* Reset HW statistics and performance counters */
|
|
if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
|
|
en_dbg(HW, priv, "Failed dumping statistics\n");
|
|
|
|
memset(&priv->stats, 0, sizeof(priv->stats));
|
|
memset(&priv->pstats, 0, sizeof(priv->pstats));
|
|
|
|
for (i = 0; i < priv->tx_ring_num; i++) {
|
|
priv->tx_ring[i].bytes = 0;
|
|
priv->tx_ring[i].packets = 0;
|
|
}
|
|
for (i = 0; i < priv->rx_ring_num; i++) {
|
|
priv->rx_ring[i].bytes = 0;
|
|
priv->rx_ring[i].packets = 0;
|
|
}
|
|
|
|
mlx4_en_set_default_moderation(priv);
|
|
err = mlx4_en_start_port(dev);
|
|
if (err)
|
|
en_err(priv, "Failed starting port:%d\n", priv->port);
|
|
|
|
out:
|
|
mutex_unlock(&mdev->state_lock);
|
|
return err;
|
|
}
|
|
|
|
|
|
static int mlx4_en_close(struct net_device *dev)
|
|
{
|
|
struct mlx4_en_priv *priv = netdev_priv(dev);
|
|
struct mlx4_en_dev *mdev = priv->mdev;
|
|
|
|
en_dbg(IFDOWN, priv, "Close port called\n");
|
|
|
|
mutex_lock(&mdev->state_lock);
|
|
|
|
mlx4_en_stop_port(dev);
|
|
netif_carrier_off(dev);
|
|
|
|
mutex_unlock(&mdev->state_lock);
|
|
return 0;
|
|
}
|
|
|
|
void mlx4_en_free_resources(struct mlx4_en_priv *priv)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < priv->tx_ring_num; i++) {
|
|
if (priv->tx_ring[i].tx_info)
|
|
mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
|
|
if (priv->tx_cq[i].buf)
|
|
mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
|
|
}
|
|
|
|
for (i = 0; i < priv->rx_ring_num; i++) {
|
|
if (priv->rx_ring[i].rx_info)
|
|
mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i]);
|
|
if (priv->rx_cq[i].buf)
|
|
mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
|
|
}
|
|
}
|
|
|
|
int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
|
|
{
|
|
struct mlx4_en_port_profile *prof = priv->prof;
|
|
int i;
|
|
|
|
/* Create tx Rings */
|
|
for (i = 0; i < priv->tx_ring_num; i++) {
|
|
if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
|
|
prof->tx_ring_size, i, TX))
|
|
goto err;
|
|
|
|
if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
|
|
prof->tx_ring_size, TXBB_SIZE))
|
|
goto err;
|
|
}
|
|
|
|
/* Create rx Rings */
|
|
for (i = 0; i < priv->rx_ring_num; i++) {
|
|
if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
|
|
prof->rx_ring_size, i, RX))
|
|
goto err;
|
|
|
|
if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
|
|
prof->rx_ring_size, priv->stride))
|
|
goto err;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err:
|
|
en_err(priv, "Failed to allocate NIC resources\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
|
|
void mlx4_en_destroy_netdev(struct net_device *dev)
|
|
{
|
|
struct mlx4_en_priv *priv = netdev_priv(dev);
|
|
struct mlx4_en_dev *mdev = priv->mdev;
|
|
|
|
en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
|
|
|
|
/* Unregister device - this will close the port if it was up */
|
|
if (priv->registered)
|
|
unregister_netdev(dev);
|
|
|
|
if (priv->allocated)
|
|
mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
|
|
|
|
cancel_delayed_work(&priv->stats_task);
|
|
/* flush any pending task for this netdev */
|
|
flush_workqueue(mdev->workqueue);
|
|
|
|
/* Detach the netdev so tasks would not attempt to access it */
|
|
mutex_lock(&mdev->state_lock);
|
|
mdev->pndev[priv->port] = NULL;
|
|
mutex_unlock(&mdev->state_lock);
|
|
|
|
mlx4_en_free_resources(priv);
|
|
free_netdev(dev);
|
|
}
|
|
|
|
static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
|
|
{
|
|
struct mlx4_en_priv *priv = netdev_priv(dev);
|
|
struct mlx4_en_dev *mdev = priv->mdev;
|
|
int err = 0;
|
|
|
|
en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
|
|
dev->mtu, new_mtu);
|
|
|
|
if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
|
|
en_err(priv, "Bad MTU size:%d.\n", new_mtu);
|
|
return -EPERM;
|
|
}
|
|
dev->mtu = new_mtu;
|
|
|
|
if (netif_running(dev)) {
|
|
mutex_lock(&mdev->state_lock);
|
|
if (!mdev->device_up) {
|
|
/* NIC is probably restarting - let watchdog task reset
|
|
* the port */
|
|
en_dbg(DRV, priv, "Change MTU called with card down!?\n");
|
|
} else {
|
|
mlx4_en_stop_port(dev);
|
|
mlx4_en_set_default_moderation(priv);
|
|
err = mlx4_en_start_port(dev);
|
|
if (err) {
|
|
en_err(priv, "Failed restarting port:%d\n",
|
|
priv->port);
|
|
queue_work(mdev->workqueue, &priv->watchdog_task);
|
|
}
|
|
}
|
|
mutex_unlock(&mdev->state_lock);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static const struct net_device_ops mlx4_netdev_ops = {
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.ndo_open = mlx4_en_open,
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.ndo_stop = mlx4_en_close,
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.ndo_start_xmit = mlx4_en_xmit,
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.ndo_select_queue = mlx4_en_select_queue,
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.ndo_get_stats = mlx4_en_get_stats,
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.ndo_set_multicast_list = mlx4_en_set_multicast,
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.ndo_set_mac_address = mlx4_en_set_mac,
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.ndo_validate_addr = eth_validate_addr,
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.ndo_change_mtu = mlx4_en_change_mtu,
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.ndo_tx_timeout = mlx4_en_tx_timeout,
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.ndo_vlan_rx_register = mlx4_en_vlan_rx_register,
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.ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid,
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.ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
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#ifdef CONFIG_NET_POLL_CONTROLLER
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.ndo_poll_controller = mlx4_en_netpoll,
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#endif
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};
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int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
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struct mlx4_en_port_profile *prof)
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{
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struct net_device *dev;
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struct mlx4_en_priv *priv;
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int i;
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int err;
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dev = alloc_etherdev_mq(sizeof(struct mlx4_en_priv), prof->tx_ring_num);
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if (dev == NULL) {
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mlx4_err(mdev, "Net device allocation failed\n");
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return -ENOMEM;
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}
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SET_NETDEV_DEV(dev, &mdev->dev->pdev->dev);
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/*
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* Initialize driver private data
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*/
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priv = netdev_priv(dev);
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memset(priv, 0, sizeof(struct mlx4_en_priv));
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priv->dev = dev;
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priv->mdev = mdev;
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priv->prof = prof;
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priv->port = port;
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priv->port_up = false;
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priv->rx_csum = 1;
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priv->flags = prof->flags;
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priv->tx_ring_num = prof->tx_ring_num;
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priv->rx_ring_num = prof->rx_ring_num;
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priv->mc_list = NULL;
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priv->mac_index = -1;
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priv->msg_enable = MLX4_EN_MSG_LEVEL;
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spin_lock_init(&priv->stats_lock);
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INIT_WORK(&priv->mcast_task, mlx4_en_do_set_multicast);
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INIT_WORK(&priv->mac_task, mlx4_en_do_set_mac);
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INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
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INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
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INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
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/* Query for default mac and max mtu */
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priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
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priv->mac = mdev->dev->caps.def_mac[priv->port];
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if (ILLEGAL_MAC(priv->mac)) {
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en_err(priv, "Port: %d, invalid mac burned: 0x%llx, quiting\n",
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priv->port, priv->mac);
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err = -EINVAL;
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goto out;
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}
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priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
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DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
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err = mlx4_en_alloc_resources(priv);
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if (err)
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goto out;
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/* Allocate page for receive rings */
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err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
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MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
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if (err) {
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en_err(priv, "Failed to allocate page for rx qps\n");
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goto out;
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}
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priv->allocated = 1;
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/*
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* Initialize netdev entry points
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*/
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dev->netdev_ops = &mlx4_netdev_ops;
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dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
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dev->real_num_tx_queues = MLX4_EN_NUM_TX_RINGS;
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SET_ETHTOOL_OPS(dev, &mlx4_en_ethtool_ops);
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/* Set defualt MAC */
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dev->addr_len = ETH_ALEN;
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for (i = 0; i < ETH_ALEN; i++)
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dev->dev_addr[ETH_ALEN - 1 - i] =
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(u8) (priv->mac >> (8 * i));
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/*
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* Set driver features
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*/
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dev->features |= NETIF_F_SG;
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dev->vlan_features |= NETIF_F_SG;
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dev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
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dev->vlan_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
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dev->features |= NETIF_F_HIGHDMA;
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dev->features |= NETIF_F_HW_VLAN_TX |
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NETIF_F_HW_VLAN_RX |
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NETIF_F_HW_VLAN_FILTER;
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if (mdev->profile.num_lro)
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dev->features |= NETIF_F_LRO;
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if (mdev->LSO_support) {
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dev->features |= NETIF_F_TSO;
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dev->features |= NETIF_F_TSO6;
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dev->vlan_features |= NETIF_F_TSO;
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dev->vlan_features |= NETIF_F_TSO6;
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}
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mdev->pndev[port] = dev;
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netif_carrier_off(dev);
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err = register_netdev(dev);
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if (err) {
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en_err(priv, "Netdev registration failed for port %d\n", port);
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goto out;
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}
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en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
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en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
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priv->registered = 1;
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queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
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return 0;
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out:
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mlx4_en_destroy_netdev(dev);
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return err;
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}
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