diff options
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/Kconfig | 9 | ||||
| -rw-r--r-- | drivers/net/mlx4/Makefile | 5 | ||||
| -rw-r--r-- | drivers/net/mlx4/en_cq.c | 146 | ||||
| -rw-r--r-- | drivers/net/mlx4/en_main.c | 254 | ||||
| -rw-r--r-- | drivers/net/mlx4/en_netdev.c | 1088 | ||||
| -rw-r--r-- | drivers/net/mlx4/en_params.c | 480 | ||||
| -rw-r--r-- | drivers/net/mlx4/en_port.c | 261 | ||||
| -rw-r--r-- | drivers/net/mlx4/en_port.h | 570 | ||||
| -rw-r--r-- | drivers/net/mlx4/en_resources.c | 96 | ||||
| -rw-r--r-- | drivers/net/mlx4/en_rx.c | 1080 | ||||
| -rw-r--r-- | drivers/net/mlx4/en_tx.c | 820 | ||||
| -rw-r--r-- | drivers/net/mlx4/mlx4_en.h | 561 |
12 files changed, 5370 insertions, 0 deletions
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig index 4a11296a951..69e2c10cb9f 100644 --- a/drivers/net/Kconfig +++ b/drivers/net/Kconfig @@ -2465,6 +2465,15 @@ config PASEMI_MAC This driver supports the on-chip 1/10Gbit Ethernet controller on PA Semi's PWRficient line of chips. +config MLX4_EN + tristate "Mellanox Technologies 10Gbit Ethernet support" + depends on PCI && INET + select MLX4_CORE + select INET_LRO + help + This driver supports Mellanox Technologies ConnectX Ethernet + devices. + config MLX4_CORE tristate depends on PCI diff --git a/drivers/net/mlx4/Makefile b/drivers/net/mlx4/Makefile index 9f493666e27..a7a97bf998f 100644 --- a/drivers/net/mlx4/Makefile +++ b/drivers/net/mlx4/Makefile @@ -2,3 +2,8 @@ obj-$(CONFIG_MLX4_CORE) += mlx4_core.o mlx4_core-y := alloc.o catas.o cmd.o cq.o eq.o fw.o icm.o intf.o main.o mcg.o \ mr.o pd.o port.o profile.o qp.o reset.o srq.o + +obj-$(CONFIG_MLX4_EN) += mlx4_en.o + +mlx4_en-y := en_main.o en_tx.o en_rx.o en_params.o en_port.o en_cq.o \ + en_resources.o en_netdev.o diff --git a/drivers/net/mlx4/en_cq.c b/drivers/net/mlx4/en_cq.c new file mode 100644 index 00000000000..1368a8010af --- /dev/null +++ b/drivers/net/mlx4/en_cq.c @@ -0,0 +1,146 @@ +/* + * Copyright (c) 2007 Mellanox Technologies. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#include <linux/mlx4/cq.h> +#include <linux/mlx4/qp.h> +#include <linux/mlx4/cmd.h> + +#include "mlx4_en.h" + +static void mlx4_en_cq_event(struct mlx4_cq *cq, enum mlx4_event event) +{ + return; +} + + +int mlx4_en_create_cq(struct mlx4_en_priv *priv, + struct mlx4_en_cq *cq, + int entries, int ring, enum cq_type mode) +{ + struct mlx4_en_dev *mdev = priv->mdev; + int err; + + cq->size = entries; + if (mode == RX) + cq->buf_size = cq->size * sizeof(struct mlx4_cqe); + else + cq->buf_size = sizeof(struct mlx4_cqe); + + cq->ring = ring; + cq->is_tx = mode; + spin_lock_init(&cq->lock); + + err = mlx4_alloc_hwq_res(mdev->dev, &cq->wqres, + cq->buf_size, 2 * PAGE_SIZE); + if (err) + return err; + + err = mlx4_en_map_buffer(&cq->wqres.buf); + if (err) + mlx4_free_hwq_res(mdev->dev, &cq->wqres, cq->buf_size); + + return err; +} + +int mlx4_en_activate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq) +{ + struct mlx4_en_dev *mdev = priv->mdev; + int err; + + cq->dev = mdev->pndev[priv->port]; + cq->mcq.set_ci_db = cq->wqres.db.db; + cq->mcq.arm_db = cq->wqres.db.db + 1; + *cq->mcq.set_ci_db = 0; + *cq->mcq.arm_db = 0; + cq->buf = (struct mlx4_cqe *) cq->wqres.buf.direct.buf; + memset(cq->buf, 0, cq->buf_size); + + err = mlx4_cq_alloc(mdev->dev, cq->size, &cq->wqres.mtt, &mdev->priv_uar, + cq->wqres.db.dma, &cq->mcq, cq->is_tx); + if (err) + return err; + + cq->mcq.comp = cq->is_tx ? mlx4_en_tx_irq : mlx4_en_rx_irq; + cq->mcq.event = mlx4_en_cq_event; + + if (cq->is_tx) { + init_timer(&cq->timer); + cq->timer.function = mlx4_en_poll_tx_cq; + cq->timer.data = (unsigned long) cq; + } else { + netif_napi_add(cq->dev, &cq->napi, mlx4_en_poll_rx_cq, 64); + napi_enable(&cq->napi); + } + + return 0; +} + +void mlx4_en_destroy_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq) +{ + struct mlx4_en_dev *mdev = priv->mdev; + + mlx4_en_unmap_buffer(&cq->wqres.buf); + mlx4_free_hwq_res(mdev->dev, &cq->wqres, cq->buf_size); + cq->buf_size = 0; + cq->buf = NULL; +} + +void mlx4_en_deactivate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq) +{ + struct mlx4_en_dev *mdev = priv->mdev; + + if (cq->is_tx) + del_timer(&cq->timer); + else + napi_disable(&cq->napi); + + mlx4_cq_free(mdev->dev, &cq->mcq); +} + +/* Set rx cq moderation parameters */ +int mlx4_en_set_cq_moder(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq) +{ + return mlx4_cq_modify(priv->mdev->dev, &cq->mcq, + cq->moder_cnt, cq->moder_time); +} + +int mlx4_en_arm_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq) +{ + cq->armed = 1; + mlx4_cq_arm(&cq->mcq, MLX4_CQ_DB_REQ_NOT, priv->mdev->uar_map, + &priv->mdev->uar_lock); + + return 0; +} + + diff --git a/drivers/net/mlx4/en_main.c b/drivers/net/mlx4/en_main.c new file mode 100644 index 00000000000..1b0eebf84f7 --- /dev/null +++ b/drivers/net/mlx4/en_main.c @@ -0,0 +1,254 @@ +/* + * Copyright (c) 2007 Mellanox Technologies. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#include <linux/cpumask.h> +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/netdevice.h> +#include <linux/cpumask.h> + +#include <linux/mlx4/driver.h> +#include <linux/mlx4/device.h> +#include <linux/mlx4/cmd.h> + +#include "mlx4_en.h" + +MODULE_AUTHOR("Liran Liss, Yevgeny Petrilin"); +MODULE_DESCRIPTION("Mellanox ConnectX HCA Ethernet driver"); +MODULE_LICENSE("Dual BSD/GPL"); +MODULE_VERSION(DRV_VERSION " ("DRV_RELDATE")"); + +static const char mlx4_en_version[] = + DRV_NAME ": Mellanox ConnectX HCA Ethernet driver v" + DRV_VERSION " (" DRV_RELDATE ")\n"; + +static void mlx4_en_event(struct mlx4_dev *dev, void *endev_ptr, + enum mlx4_dev_event event, int port) +{ + struct mlx4_en_dev *mdev = (struct mlx4_en_dev *) endev_ptr; + struct mlx4_en_priv *priv; + + if (!mdev->pndev[port]) + return; + + priv = netdev_priv(mdev->pndev[port]); + switch (event) { + case MLX4_DEV_EVENT_PORT_UP: + case MLX4_DEV_EVENT_PORT_DOWN: + /* To prevent races, we poll the link state in a separate + task rather than changing it here */ + priv->link_state = event; + queue_work(mdev->workqueue, &priv->linkstate_task); + break; + + case MLX4_DEV_EVENT_CATASTROPHIC_ERROR: + mlx4_err(mdev, "Internal error detected, restarting device\n"); + break; + + default: + mlx4_warn(mdev, "Unhandled event: %d\n", event); + } +} + +static void mlx4_en_remove(struct mlx4_dev *dev, void *endev_ptr) +{ + struct mlx4_en_dev *mdev = endev_ptr; + int i; + + mutex_lock(&mdev->state_lock); + mdev->device_up = false; + mutex_unlock(&mdev->state_lock); + + mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) + if (mdev->pndev[i]) + mlx4_en_destroy_netdev(mdev->pndev[i]); + + flush_workqueue(mdev->workqueue); + destroy_workqueue(mdev->workqueue); + mlx4_mr_free(dev, &mdev->mr); + mlx4_uar_free(dev, &mdev->priv_uar); + mlx4_pd_free(dev, mdev->priv_pdn); + kfree(mdev); +} + +static void *mlx4_en_add(struct mlx4_dev *dev) +{ + static int mlx4_en_version_printed; + struct mlx4_en_dev *mdev; + int i; + int err; + + if (!mlx4_en_version_printed) { + printk(KERN_INFO "%s", mlx4_en_version); + mlx4_en_version_printed++; + } + + mdev = kzalloc(sizeof *mdev, GFP_KERNEL); + if (!mdev) { + dev_err(&dev->pdev->dev, "Device struct alloc failed, " + "aborting.\n"); + err = -ENOMEM; + goto err_free_res; + } + + if (mlx4_pd_alloc(dev, &mdev->priv_pdn)) + goto err_free_dev; + + if (mlx4_uar_alloc(dev, &mdev->priv_uar)) + goto err_pd; + + mdev->uar_map = ioremap(mdev->priv_uar.pfn << PAGE_SHIFT, PAGE_SIZE); + if (!mdev->uar_map) + goto err_uar; + spin_lock_init(&mdev->uar_lock); + + mdev->dev = dev; + mdev->dma_device = &(dev->pdev->dev); + mdev->pdev = dev->pdev; + mdev->device_up = false; + + mdev->LSO_support = !!(dev->caps.flags & (1 << 15)); + if (!mdev->LSO_support) + mlx4_warn(mdev, "LSO not supported, please upgrade to later " + "FW version to enable LSO\n"); + + if (mlx4_mr_alloc(mdev->dev, mdev->priv_pdn, 0, ~0ull, + MLX4_PERM_LOCAL_WRITE | MLX4_PERM_LOCAL_READ, + 0, 0, &mdev->mr)) { + mlx4_err(mdev, "Failed allocating memory region\n"); + goto err_uar; + } + if (mlx4_mr_enable(mdev->dev, &mdev->mr)) { + mlx4_err(mdev, "Failed enabling memory region\n"); + goto err_mr; + } + + /* Build device profile according to supplied module parameters */ + err = mlx4_en_get_profile(mdev); + if (err) { + mlx4_err(mdev, "Bad module parameters, aborting.\n"); + goto err_mr; + } + + /* Configure wich ports to start according to module parameters */ + mdev->port_cnt = 0; + mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) + mdev->port_cnt++; + + /* If we did not receive an explicit number of Rx rings, default to + * the number of completion vectors populated by the mlx4_core */ + mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) { + mlx4_info(mdev, "Using %d tx rings for port:%d\n", + mdev->profile.prof[i].tx_ring_num, i); + if (!mdev->profile.prof[i].rx_ring_num) { + mdev->profile.prof[i].rx_ring_num = 1; + mlx4_info(mdev, "Defaulting to %d rx rings for port:%d\n", + 1, i); + } else + mlx4_info(mdev, "Using %d rx rings for port:%d\n", + mdev->profile.prof[i].rx_ring_num, i); + } + + /* Create our own workqueue for reset/multicast tasks + * Note: we cannot use the shared workqueue because of deadlocks caused + * by the rtnl lock */ + mdev->workqueue = create_singlethread_workqueue("mlx4_en"); + if (!mdev->workqueue) { + err = -ENOMEM; + goto err_close_nic; + } + + /* At this stage all non-port specific tasks are complete: + * mark the card state as up */ + mutex_init(&mdev->state_lock); + mdev->device_up = true; + + /* Setup ports */ + + /* Create a netdev for each port */ + mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) { + mlx4_info(mdev, "Activating port:%d\n", i); + if (mlx4_en_init_netdev(mdev, i, &mdev->profile.prof[i])) { + mdev->pndev[i] = NULL; + goto err_free_netdev; + } + } + return mdev; + + +err_free_netdev: + mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) { + if (mdev->pndev[i]) + mlx4_en_destroy_netdev(mdev->pndev[i]); + } + + mutex_lock(&mdev->state_lock); + mdev->device_up = false; + mutex_unlock(&mdev->state_lock); + flush_workqueue(mdev->workqueue); + + /* Stop event queue before we drop down to release shared SW state */ + +err_close_nic: + destroy_workqueue(mdev->workqueue); +err_mr: + mlx4_mr_free(dev, &mdev->mr); +err_uar: + mlx4_uar_free(dev, &mdev->priv_uar); +err_pd: + mlx4_pd_free(dev, mdev->priv_pdn); +err_free_dev: + kfree(mdev); +err_free_res: + return NULL; +} + +static struct mlx4_interface mlx4_en_interface = { + .add = mlx4_en_add, + .remove = mlx4_en_remove, + .event = mlx4_en_event, +}; + +static int __init mlx4_en_init(void) +{ + return mlx4_register_interface(&mlx4_en_interface); +} + +static void __exit mlx4_en_cleanup(void) +{ + mlx4_unregister_interface(&mlx4_en_interface); +} + +module_init(mlx4_en_init); +module_exit(mlx4_en_cleanup); + diff --git a/drivers/net/mlx4/en_netdev.c b/drivers/net/mlx4/en_netdev.c new file mode 100644 index 00000000000..a339afbeed3 --- /dev/null +++ b/drivers/net/mlx4/en_netdev.c @@ -0,0 +1,1088 @@ +/* + * Copyright (c) 2007 Mellanox Technologies. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#include <linux/etherdevice.h> +#include <linux/tcp.h> +#include <linux/if_vlan.h> +#include <linux/delay.h> + +#include <linux/mlx4/driver.h> +#include <linux/mlx4/device.h> +#include <linux/mlx4/cmd.h> +#include <linux/mlx4/cq.h> + +#include "mlx4_en.h" +#include "en_port.h" + + +static void mlx4_en_vlan_rx_register(struct net_device *dev, struct vlan_group *grp) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = priv->mdev; + int err; + + mlx4_dbg(HW, priv, "Registering VLAN group:%p\n", grp); + priv->vlgrp = grp; + + mutex_lock(&mdev->state_lock); + if (mdev->device_up && priv->port_up) { + err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, grp); + if (err) + mlx4_err(mdev, "Failed configuring VLAN filter\n"); + } + mutex_unlock(&mdev->state_lock); +} + +static void mlx4_en_vlan_rx_add_vid(struct net_device *dev, unsigned short vid) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = priv->mdev; + int err; + + if (!priv->vlgrp) + return; + + mlx4_dbg(HW, priv, "adding VLAN:%d (vlgrp entry:%p)\n", + vid, vlan_group_get_device(priv->vlgrp, vid)); + + /* Add VID to port VLAN filter */ + mutex_lock(&mdev->state_lock); + if (mdev->device_up && priv->port_up) { + err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, priv->vlgrp); + if (err) + mlx4_err(mdev, "Failed configuring VLAN filter\n"); + } + mutex_unlock(&mdev->state_lock); +} + +static void mlx4_en_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = priv->mdev; + int err; + + if (!priv->vlgrp) + return; + + mlx4_dbg(HW, priv, "Killing VID:%d (vlgrp:%p vlgrp " + "entry:%p)\n", vid, priv->vlgrp, + vlan_group_get_device(priv->vlgrp, vid)); + vlan_group_set_device(priv->vlgrp, vid, NULL); + + /* Remove VID from port VLAN filter */ + mutex_lock(&mdev->state_lock); + if (mdev->device_up && priv->port_up) { + err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, priv->vlgrp); + if (err) + mlx4_err(mdev, "Failed configuring VLAN filter\n"); + } + mutex_unlock(&mdev->state_lock); +} + +static u64 mlx4_en_mac_to_u64(u8 *addr) +{ + u64 mac = 0; + int i; + + for (i = 0; i < ETH_ALEN; i++) { + mac <<= 8; + mac |= addr[i]; + } + return mac; +} + +static int mlx4_en_set_mac(struct net_device *dev, void *addr) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = priv->mdev; + struct sockaddr *saddr = addr; + + if (!is_valid_ether_addr(saddr->sa_data)) + return -EADDRNOTAVAIL; + + memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN); + priv->mac = mlx4_en_mac_to_u64(dev->dev_addr); + queue_work(mdev->workqueue, &priv->mac_task); + return 0; +} + +static void mlx4_en_do_set_mac(struct work_struct *work) +{ + struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, + mac_task); + struct mlx4_en_dev *mdev = priv->mdev; + int err = 0; + + mutex_lock(&mdev->state_lock); + if (priv->port_up) { + /* Remove old MAC and insert the new one */ + mlx4_unregister_mac(mdev->dev, priv->port, priv->mac_index); + err = mlx4_register_mac(mdev->dev, priv->port, + priv->mac, &priv->mac_index); + if (err) + mlx4_err(mdev, "Failed changing HW MAC address\n"); + } else + mlx4_dbg(HW, priv, "Port is down, exiting...\n"); + + mutex_unlock(&mdev->state_lock); +} + +static void mlx4_en_clear_list(struct net_device *dev) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct dev_mc_list *plist = priv->mc_list; + struct dev_mc_list *next; + + while (plist) { + next = plist->next; + kfree(plist); + plist = next; + } + priv->mc_list = NULL; +} + +static void mlx4_en_cache_mclist(struct net_device *dev) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = priv->mdev; + struct dev_mc_list *mclist; + struct dev_mc_list *tmp; + struct dev_mc_list *plist = NULL; + + for (mclist = dev->mc_list; mclist; mclist = mclist->next) { + tmp = kmalloc(sizeof(struct dev_mc_list), GFP_ATOMIC); + if (!tmp) { + mlx4_err(mdev, "failed to allocate multicast list\n"); + mlx4_en_clear_list(dev); + return; + } + memcpy(tmp, mclist, sizeof(struct dev_mc_list)); + tmp->next = NULL; + if (plist) + plist->next = tmp; + else + priv->mc_list = tmp; + plist = tmp; + } +} + + +static void mlx4_en_set_multicast(struct net_device *dev) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + + if (!priv->port_up) + return; + + queue_work(priv->mdev->workqueue, &priv->mcast_task); +} + +static void mlx4_en_do_set_multicast(struct work_struct *work) +{ + struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, + mcast_task); + struct mlx4_en_dev *mdev = priv->mdev; + struct net_device *dev = priv->dev; + struct dev_mc_list *mclist; + u64 mcast_addr = 0; + int err; + + mutex_lock(&mdev->state_lock); + if (!mdev->device_up) { + mlx4_dbg(HW, priv, "Card is not up, ignoring " + "multicast change.\n"); + goto out; + } + if (!priv->port_up) { + mlx4_dbg(HW, priv, "Port is down, ignoring " + "multicast change.\n"); + goto out; + } + + /* + * Promsicuous mode: disable all filters + */ + + if (dev->flags & IFF_PROMISC) { + if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) { + if (netif_msg_rx_status(priv)) + mlx4_warn(mdev, "Port:%d entering promiscuous mode\n", + priv->port); + priv->flags |= MLX4_EN_FLAG_PROMISC; + + /* Enable promiscouos mode */ + err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, + priv->base_qpn, 1); + if (err) + mlx4_err(mdev, "Failed enabling " + "promiscous mode\n"); + + /* Disable port multicast filter (unconditionally) */ + err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, + 0, MLX4_MCAST_DISABLE); + if (err) + mlx4_err(mdev, "Failed disabling " + "multicast filter\n"); + + /* Disable port VLAN filter */ + err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, NULL); + if (err) + mlx4_err(mdev, "Failed disabling " + "VLAN filter\n"); + } + goto out; + } + + /* + * Not in promiscous mode + */ + + if (priv->flags & MLX4_EN_FLAG_PROMISC) { + if (netif_msg_rx_status(priv)) + mlx4_warn(mdev, "Port:%d leaving promiscuous mode\n", + priv->port); + priv->flags &= ~MLX4_EN_FLAG_PROMISC; + + /* Disable promiscouos mode */ + err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, + priv->base_qpn, 0); + if (err) + mlx4_err(mdev, "Failed disabling promiscous mode\n"); + + /* Enable port VLAN filter */ + err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, priv->vlgrp); + if (err) + mlx4_err(mdev, "Failed enabling VLAN filter\n"); + } + + /* Enable/disable the multicast filter according to IFF_ALLMULTI */ + if (dev->flags & IFF_ALLMULTI) { + err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, + 0, MLX4_MCAST_DISABLE); + if (err) + mlx4_err(mdev, "Failed disabling multicast filter\n"); + } else { + err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, + 0, MLX4_MCAST_DISABLE); + if (err) + mlx4_err(mdev, "Failed disabling multicast filter\n"); + + /* Flush mcast filter and init it with broadcast address */ + mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST, + 1, MLX4_MCAST_CONFIG); + + /* Update multicast list - we cache all addresses so they won't + * change while HW is updated holding the command semaphor */ + netif_tx_lock_bh(dev); + mlx4_en_cache_mclist(dev); + netif_tx_unlock_bh(dev); + for (mclist = priv->mc_list; mclist; mclist = mclist->next) { + mcast_addr = mlx4_en_mac_to_u64(mclist->dmi_addr); + mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, + mcast_addr, 0, MLX4_MCAST_CONFIG); + } + err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, + 0, MLX4_MCAST_ENABLE); + if (err) + mlx4_err(mdev, "Failed enabling multicast filter\n"); + + mlx4_en_clear_list(dev); + } +out: + mutex_unlock(&mdev->state_lock); +} + +#ifdef CONFIG_NET_POLL_CONTROLLER +static void mlx4_en_netpoll(struct net_device *dev) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_cq *cq; + unsigned long flags; + int i; + + for (i = 0; i < priv->rx_ring_num; i++) { + cq = &priv->rx_cq[i]; + spin_lock_irqsave(&cq->lock, flags); + napi_synchronize(&cq->napi); + mlx4_en_process_rx_cq(dev, cq, 0); + spin_unlock_irqrestore(&cq->lock, flags); + } +} +#endif + +static void mlx4_en_tx_timeout(struct net_device *dev) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = priv->mdev; + + if (netif_msg_timer(priv)) + mlx4_warn(mdev, "Tx timeout called on port:%d\n", priv->port); + + if (netif_carrier_ok(dev)) { + priv->port_stats.tx_timeout++; + mlx4_dbg(DRV, priv, "Scheduling watchdog\n"); + queue_work(mdev->workqueue, &priv->watchdog_task); + } +} + + +static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + + spin_lock_bh(&priv->stats_lock); + memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats)); + spin_unlock_bh(&priv->stats_lock); + + return &priv->ret_stats; +} + +static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv) +{ + struct mlx4_en_dev *mdev = priv->mdev; + struct mlx4_en_cq *cq; + int i; + + /* If we haven't received a specific coalescing setting + * (module param), we set the moderation paramters as follows: + * - moder_cnt is set to the number of mtu sized packets to + * satisfy our coelsing target. + * - moder_time is set to a fixed value. + */ + priv->rx_frames = (mdev->profile.rx_moder_cnt == + MLX4_EN_AUTO_CONF) ? + MLX4_EN_RX_COAL_TARGET / + priv->dev->mtu + 1 : + mdev->profile.rx_moder_cnt; + priv->rx_usecs = (mdev->profile.rx_moder_time == + MLX4_EN_AUTO_CONF) ? + MLX4_EN_RX_COAL_TIME : + mdev->profile.rx_moder_time; + mlx4_dbg(INTR, priv, "Default coalesing params for mtu:%d - " + "rx_frames:%d rx_usecs:%d\n", + priv->dev->mtu, priv->rx_frames, priv->rx_usecs); + + /* Setup cq moderation params */ + for (i = 0; i < priv->rx_ring_num; i++) { + cq = &priv->rx_cq[i]; + cq->moder_cnt = priv->rx_frames; + cq->moder_time = priv->rx_usecs; + } + + for (i = 0; i < priv->tx_ring_num; i++) { + cq = &priv->tx_cq[i]; + cq->moder_cnt = MLX4_EN_TX_COAL_PKTS; + cq->moder_time = MLX4_EN_TX_COAL_TIME; + } + + /* Reset auto-moderation params */ + priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW; + priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW; + priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH; + priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH; + priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL; + priv->adaptive_rx_coal = mdev->profile.auto_moder; + priv->last_moder_time = MLX4_EN_AUTO_CONF; + priv->last_moder_jiffies = 0; + priv->last_moder_packets = 0; + priv->last_moder_tx_packets = 0; + priv->last_moder_bytes = 0; +} + +static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv) +{ + unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies); + struct mlx4_en_dev *mdev = priv->mdev; + struct mlx4_en_cq *cq; + unsigned long packets; + unsigned long rate; + unsigned long avg_pkt_size; + unsigned long rx_packets; + unsigned long rx_bytes; + unsigned long tx_packets; + unsigned long tx_pkt_diff; + unsigned long rx_pkt_diff; + int moder_time; + int i, err; + + if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ) + return; + + spin_lock_bh(&priv->stats_lock); + rx_packets = priv->stats.rx_packets; + rx_bytes = priv->stats.rx_bytes; + tx_packets = priv->stats.tx_packets; + spin_unlock_bh(&priv->stats_lock); + + if (!priv->last_moder_jiffies || !period) + goto out; + + tx_pkt_diff = ((unsigned long) (tx_packets - + priv->last_moder_tx_packets)); + rx_pkt_diff = ((unsigned long) (rx_packets - + priv->last_moder_packets)); + packets = max(tx_pkt_diff, rx_pkt_diff); + rate = packets * HZ / period; + avg_pkt_size = packets ? ((unsigned long) (rx_bytes - + priv->last_moder_bytes)) / packets : 0; + + /* Apply auto-moderation only when packet rate exceeds a rate that + * it matters */ + if (rate > MLX4_EN_RX_RATE_THRESH) { + /* If tx and rx packet rates are not balanced, assume that + * traffic is mainly BW bound and apply maximum moderation. + * Otherwise, moderate according to packet rate */ + if (2 * tx_pkt_diff > 3 * rx_pkt_diff || + 2 * rx_pkt_diff > 3 * tx_pkt_diff) { + moder_time = priv->rx_usecs_high; + } else { + if (rate < priv->pkt_rate_low) + 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; + } + + mlx4_dbg(INTR, priv, "tx rate:%lu rx_rate:%lu\n", + tx_pkt_diff * HZ / period, rx_pkt_diff * HZ / period); + + mlx4_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) { + mlx4_err(mdev, "Failed modifying moderation for cq:%d " + "on port:%d\n", i, priv->port); + 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 = container_of(work, struct 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) + mlx4_dbg(HW, priv, "Could not update stats for " + "port:%d\n", priv->port); + + 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) { + if (netif_msg_link(priv)) + mlx4_info(mdev, "Port %d - link down\n", priv->port); + netif_carrier_off(priv->dev); + } else { + if (netif_msg_link(priv)) + mlx4_info(mdev, "Port %d - link up\n", priv->port); + netif_carrier_on(priv->dev); + } + } + priv->last_link_state = linkstate; + mutex_unlock(&mdev->state_lock); +} + + +static 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; + struct mlx4_en_rx_ring *rx_ring; + int rx_index = 0; + int tx_index = 0; + u16 stride; + int err = 0; + int i; + int j; + + if (priv->port_up) { + mlx4_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); + mlx4_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size); + stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) + + DS_SIZE * priv->num_frags); + /* Configure rx cq's and rings */ + for (i = 0; i < priv->rx_ring_num; i++) { + cq = &priv->rx_cq[i]; + rx_ring = &priv->rx_ring[i]; + + err = mlx4_en_activate_cq(priv, cq); + if (err) { + mlx4_err(mdev, "Failed activating Rx CQ\n"); + goto rx_err; |