15a2cc190SJeff Kirsher /* 25a2cc190SJeff Kirsher * Copyright (c) 2007 Mellanox Technologies. All rights reserved. 35a2cc190SJeff Kirsher * 45a2cc190SJeff Kirsher * This software is available to you under a choice of one of two 55a2cc190SJeff Kirsher * licenses. You may choose to be licensed under the terms of the GNU 65a2cc190SJeff Kirsher * General Public License (GPL) Version 2, available from the file 75a2cc190SJeff Kirsher * COPYING in the main directory of this source tree, or the 85a2cc190SJeff Kirsher * OpenIB.org BSD license below: 95a2cc190SJeff Kirsher * 105a2cc190SJeff Kirsher * Redistribution and use in source and binary forms, with or 115a2cc190SJeff Kirsher * without modification, are permitted provided that the following 125a2cc190SJeff Kirsher * conditions are met: 135a2cc190SJeff Kirsher * 145a2cc190SJeff Kirsher * - Redistributions of source code must retain the above 155a2cc190SJeff Kirsher * copyright notice, this list of conditions and the following 165a2cc190SJeff Kirsher * disclaimer. 175a2cc190SJeff Kirsher * 185a2cc190SJeff Kirsher * - Redistributions in binary form must reproduce the above 195a2cc190SJeff Kirsher * copyright notice, this list of conditions and the following 205a2cc190SJeff Kirsher * disclaimer in the documentation and/or other materials 215a2cc190SJeff Kirsher * provided with the distribution. 225a2cc190SJeff Kirsher * 235a2cc190SJeff Kirsher * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 245a2cc190SJeff Kirsher * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 255a2cc190SJeff Kirsher * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 265a2cc190SJeff Kirsher * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 275a2cc190SJeff Kirsher * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 285a2cc190SJeff Kirsher * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 295a2cc190SJeff Kirsher * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 305a2cc190SJeff Kirsher * SOFTWARE. 315a2cc190SJeff Kirsher * 325a2cc190SJeff Kirsher */ 335a2cc190SJeff Kirsher 345a2cc190SJeff Kirsher #include <linux/cpumask.h> 355a2cc190SJeff Kirsher #include <linux/module.h> 365a2cc190SJeff Kirsher #include <linux/delay.h> 375a2cc190SJeff Kirsher #include <linux/netdevice.h> 385a2cc190SJeff Kirsher #include <linux/slab.h> 395a2cc190SJeff Kirsher 405a2cc190SJeff Kirsher #include <linux/mlx4/driver.h> 415a2cc190SJeff Kirsher #include <linux/mlx4/device.h> 425a2cc190SJeff Kirsher #include <linux/mlx4/cmd.h> 435a2cc190SJeff Kirsher 445a2cc190SJeff Kirsher #include "mlx4_en.h" 455a2cc190SJeff Kirsher 465a2cc190SJeff Kirsher MODULE_AUTHOR("Liran Liss, Yevgeny Petrilin"); 475a2cc190SJeff Kirsher MODULE_DESCRIPTION("Mellanox ConnectX HCA Ethernet driver"); 485a2cc190SJeff Kirsher MODULE_LICENSE("Dual BSD/GPL"); 495a2cc190SJeff Kirsher MODULE_VERSION(DRV_VERSION " ("DRV_RELDATE")"); 505a2cc190SJeff Kirsher 515a2cc190SJeff Kirsher static const char mlx4_en_version[] = 525a2cc190SJeff Kirsher DRV_NAME ": Mellanox ConnectX HCA Ethernet driver v" 535a2cc190SJeff Kirsher DRV_VERSION " (" DRV_RELDATE ")\n"; 545a2cc190SJeff Kirsher 555a2cc190SJeff Kirsher #define MLX4_EN_PARM_INT(X, def_val, desc) \ 565a2cc190SJeff Kirsher static unsigned int X = def_val;\ 575a2cc190SJeff Kirsher module_param(X , uint, 0444); \ 585a2cc190SJeff Kirsher MODULE_PARM_DESC(X, desc); 595a2cc190SJeff Kirsher 605a2cc190SJeff Kirsher 615a2cc190SJeff Kirsher /* 625a2cc190SJeff Kirsher * Device scope module parameters 635a2cc190SJeff Kirsher */ 645a2cc190SJeff Kirsher 655a2cc190SJeff Kirsher /* Enable RSS UDP traffic */ 665a2cc190SJeff Kirsher MLX4_EN_PARM_INT(udp_rss, 1, 67d82603c6SJorrit Schippers "Enable RSS for incoming UDP traffic or disabled (0)"); 685a2cc190SJeff Kirsher 695a2cc190SJeff Kirsher /* Priority pausing */ 705a2cc190SJeff Kirsher MLX4_EN_PARM_INT(pfctx, 0, "Priority based Flow Control policy on TX[7:0]." 715a2cc190SJeff Kirsher " Per priority bit mask"); 725a2cc190SJeff Kirsher MLX4_EN_PARM_INT(pfcrx, 0, "Priority based Flow Control policy on RX[7:0]." 735a2cc190SJeff Kirsher " Per priority bit mask"); 745a2cc190SJeff Kirsher 75b97b33a3SEugenia Emantayev MLX4_EN_PARM_INT(inline_thold, MAX_INLINE, 76b97b33a3SEugenia Emantayev "Threshold for using inline data (range: 17-104, default: 104)"); 77b97b33a3SEugenia Emantayev 78b97b33a3SEugenia Emantayev #define MAX_PFC_TX 0xff 79b97b33a3SEugenia Emantayev #define MAX_PFC_RX 0xff 80b97b33a3SEugenia Emantayev 810c87b29cSJoe Perches void en_print(const char *level, const struct mlx4_en_priv *priv, 825a2cc190SJeff Kirsher const char *format, ...) 835a2cc190SJeff Kirsher { 845a2cc190SJeff Kirsher va_list args; 855a2cc190SJeff Kirsher struct va_format vaf; 865a2cc190SJeff Kirsher 875a2cc190SJeff Kirsher va_start(args, format); 885a2cc190SJeff Kirsher 895a2cc190SJeff Kirsher vaf.fmt = format; 905a2cc190SJeff Kirsher vaf.va = &args; 915a2cc190SJeff Kirsher if (priv->registered) 920c87b29cSJoe Perches printk("%s%s: %s: %pV", 935a2cc190SJeff Kirsher level, DRV_NAME, priv->dev->name, &vaf); 945a2cc190SJeff Kirsher else 950c87b29cSJoe Perches printk("%s%s: %s: Port %d: %pV", 965a2cc190SJeff Kirsher level, DRV_NAME, dev_name(&priv->mdev->pdev->dev), 975a2cc190SJeff Kirsher priv->port, &vaf); 985a2cc190SJeff Kirsher va_end(args); 995a2cc190SJeff Kirsher } 1005a2cc190SJeff Kirsher 10179aeaccdSYan Burman void mlx4_en_update_loopback_state(struct net_device *dev, 10279aeaccdSYan Burman netdev_features_t features) 10379aeaccdSYan Burman { 10479aeaccdSYan Burman struct mlx4_en_priv *priv = netdev_priv(dev); 10579aeaccdSYan Burman 106241a08c3SIdo Shamay if (features & NETIF_F_LOOPBACK) 107241a08c3SIdo Shamay priv->ctrl_flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK); 108241a08c3SIdo Shamay else 109241a08c3SIdo Shamay priv->ctrl_flags &= cpu_to_be32(~MLX4_WQE_CTRL_FORCE_LOOPBACK); 110241a08c3SIdo Shamay 11179aeaccdSYan Burman priv->flags &= ~(MLX4_EN_FLAG_RX_FILTER_NEEDED| 11279aeaccdSYan Burman MLX4_EN_FLAG_ENABLE_HW_LOOPBACK); 11379aeaccdSYan Burman 11479aeaccdSYan Burman /* Drop the packet if SRIOV is not enabled 11579aeaccdSYan Burman * and not performing the selftest or flb disabled 11679aeaccdSYan Burman */ 11779aeaccdSYan Burman if (mlx4_is_mfunc(priv->mdev->dev) && 11879aeaccdSYan Burman !(features & NETIF_F_LOOPBACK) && !priv->validate_loopback) 11979aeaccdSYan Burman priv->flags |= MLX4_EN_FLAG_RX_FILTER_NEEDED; 12079aeaccdSYan Burman 12179aeaccdSYan Burman /* Set dmac in Tx WQE if we are in SRIOV mode or if loopback selftest 12279aeaccdSYan Burman * is requested 12379aeaccdSYan Burman */ 12479aeaccdSYan Burman if (mlx4_is_mfunc(priv->mdev->dev) || priv->validate_loopback) 12579aeaccdSYan Burman priv->flags |= MLX4_EN_FLAG_ENABLE_HW_LOOPBACK; 12679aeaccdSYan Burman } 12779aeaccdSYan Burman 1285a2cc190SJeff Kirsher static int mlx4_en_get_profile(struct mlx4_en_dev *mdev) 1295a2cc190SJeff Kirsher { 1305a2cc190SJeff Kirsher struct mlx4_en_profile *params = &mdev->profile; 1315a2cc190SJeff Kirsher int i; 1325a2cc190SJeff Kirsher 1335a2cc190SJeff Kirsher params->udp_rss = udp_rss; 134ea1c1af1SAmir Vadai params->num_tx_rings_p_up = mlx4_low_memory_profile() ? 135ea1c1af1SAmir Vadai MLX4_EN_MIN_TX_RING_P_UP : 136ea1c1af1SAmir Vadai min_t(int, num_online_cpus(), MLX4_EN_MAX_TX_RING_P_UP); 137ea1c1af1SAmir Vadai 1385a2cc190SJeff Kirsher if (params->udp_rss && !(mdev->dev->caps.flags 1395a2cc190SJeff Kirsher & MLX4_DEV_CAP_FLAG_UDP_RSS)) { 1401a91de28SJoe Perches mlx4_warn(mdev, "UDP RSS is not supported on this device\n"); 1415a2cc190SJeff Kirsher params->udp_rss = 0; 1425a2cc190SJeff Kirsher } 1435a2cc190SJeff Kirsher for (i = 1; i <= MLX4_MAX_PORTS; i++) { 1445a2cc190SJeff Kirsher params->prof[i].rx_pause = 1; 1455a2cc190SJeff Kirsher params->prof[i].rx_ppp = pfcrx; 1465a2cc190SJeff Kirsher params->prof[i].tx_pause = 1; 1475a2cc190SJeff Kirsher params->prof[i].tx_ppp = pfctx; 1485a2cc190SJeff Kirsher params->prof[i].tx_ring_size = MLX4_EN_DEF_TX_RING_SIZE; 1495a2cc190SJeff Kirsher params->prof[i].rx_ring_size = MLX4_EN_DEF_RX_RING_SIZE; 150bc6a4744SAmir Vadai params->prof[i].tx_ring_num = params->num_tx_rings_p_up * 151bc6a4744SAmir Vadai MLX4_EN_NUM_UP; 15293d3e367SYevgeny Petrilin params->prof[i].rss_rings = 0; 153b97b33a3SEugenia Emantayev params->prof[i].inline_thold = inline_thold; 1545a2cc190SJeff Kirsher } 1555a2cc190SJeff Kirsher 1565a2cc190SJeff Kirsher return 0; 1575a2cc190SJeff Kirsher } 1585a2cc190SJeff Kirsher 1595a2cc190SJeff Kirsher static void *mlx4_en_get_netdev(struct mlx4_dev *dev, void *ctx, u8 port) 1605a2cc190SJeff Kirsher { 1615a2cc190SJeff Kirsher struct mlx4_en_dev *endev = ctx; 1625a2cc190SJeff Kirsher 1635a2cc190SJeff Kirsher return endev->pndev[port]; 1645a2cc190SJeff Kirsher } 1655a2cc190SJeff Kirsher 1665a2cc190SJeff Kirsher static void mlx4_en_event(struct mlx4_dev *dev, void *endev_ptr, 16700f5ce99SJack Morgenstein enum mlx4_dev_event event, unsigned long port) 1685a2cc190SJeff Kirsher { 1695a2cc190SJeff Kirsher struct mlx4_en_dev *mdev = (struct mlx4_en_dev *) endev_ptr; 1705a2cc190SJeff Kirsher struct mlx4_en_priv *priv; 1715a2cc190SJeff Kirsher 1725a2cc190SJeff Kirsher switch (event) { 1735a2cc190SJeff Kirsher case MLX4_DEV_EVENT_PORT_UP: 1745a2cc190SJeff Kirsher case MLX4_DEV_EVENT_PORT_DOWN: 17513bf58b7SJack Morgenstein if (!mdev->pndev[port]) 17613bf58b7SJack Morgenstein return; 17713bf58b7SJack Morgenstein priv = netdev_priv(mdev->pndev[port]); 1785a2cc190SJeff Kirsher /* To prevent races, we poll the link state in a separate 1795a2cc190SJeff Kirsher task rather than changing it here */ 1805a2cc190SJeff Kirsher priv->link_state = event; 1815a2cc190SJeff Kirsher queue_work(mdev->workqueue, &priv->linkstate_task); 1825a2cc190SJeff Kirsher break; 1835a2cc190SJeff Kirsher 1845a2cc190SJeff Kirsher case MLX4_DEV_EVENT_CATASTROPHIC_ERROR: 1855a2cc190SJeff Kirsher mlx4_err(mdev, "Internal error detected, restarting device\n"); 1865a2cc190SJeff Kirsher break; 1875a2cc190SJeff Kirsher 188e4b59a1cSEugenia Emantayev case MLX4_DEV_EVENT_SLAVE_INIT: 189e4b59a1cSEugenia Emantayev case MLX4_DEV_EVENT_SLAVE_SHUTDOWN: 190e4b59a1cSEugenia Emantayev break; 1915a2cc190SJeff Kirsher default: 19213bf58b7SJack Morgenstein if (port < 1 || port > dev->caps.num_ports || 19313bf58b7SJack Morgenstein !mdev->pndev[port]) 19413bf58b7SJack Morgenstein return; 19500f5ce99SJack Morgenstein mlx4_warn(mdev, "Unhandled event %d for port %d\n", event, 19600f5ce99SJack Morgenstein (int) port); 1975a2cc190SJeff Kirsher } 1985a2cc190SJeff Kirsher } 1995a2cc190SJeff Kirsher 2005a2cc190SJeff Kirsher static void mlx4_en_remove(struct mlx4_dev *dev, void *endev_ptr) 2015a2cc190SJeff Kirsher { 2025a2cc190SJeff Kirsher struct mlx4_en_dev *mdev = endev_ptr; 2035a2cc190SJeff Kirsher int i; 2045a2cc190SJeff Kirsher 2055a2cc190SJeff Kirsher mutex_lock(&mdev->state_lock); 2065a2cc190SJeff Kirsher mdev->device_up = false; 2075a2cc190SJeff Kirsher mutex_unlock(&mdev->state_lock); 2085a2cc190SJeff Kirsher 2095a2cc190SJeff Kirsher mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) 2105a2cc190SJeff Kirsher if (mdev->pndev[i]) 2115a2cc190SJeff Kirsher mlx4_en_destroy_netdev(mdev->pndev[i]); 2125a2cc190SJeff Kirsher 213ad7d4eaeSShawn Bohrer if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 214ad7d4eaeSShawn Bohrer mlx4_en_remove_timestamp(mdev); 215ad7d4eaeSShawn Bohrer 2165a2cc190SJeff Kirsher flush_workqueue(mdev->workqueue); 2175a2cc190SJeff Kirsher destroy_workqueue(mdev->workqueue); 21861083720SShani Michaeli (void) mlx4_mr_free(dev, &mdev->mr); 2197398af40SAlexander Guller iounmap(mdev->uar_map); 2205a2cc190SJeff Kirsher mlx4_uar_free(dev, &mdev->priv_uar); 2215a2cc190SJeff Kirsher mlx4_pd_free(dev, mdev->priv_pdn); 2225da03547SMoni Shoua if (mdev->nb.notifier_call) 2235da03547SMoni Shoua unregister_netdevice_notifier(&mdev->nb); 2245a2cc190SJeff Kirsher kfree(mdev); 2255a2cc190SJeff Kirsher } 2265a2cc190SJeff Kirsher 22779857cd3SMoni Shoua static void mlx4_en_activate(struct mlx4_dev *dev, void *ctx) 22879857cd3SMoni Shoua { 22979857cd3SMoni Shoua int i; 23079857cd3SMoni Shoua struct mlx4_en_dev *mdev = ctx; 23179857cd3SMoni Shoua 23279857cd3SMoni Shoua /* Create a netdev for each port */ 23379857cd3SMoni Shoua mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) { 23479857cd3SMoni Shoua mlx4_info(mdev, "Activating port:%d\n", i); 23579857cd3SMoni Shoua if (mlx4_en_init_netdev(mdev, i, &mdev->profile.prof[i])) 23679857cd3SMoni Shoua mdev->pndev[i] = NULL; 23779857cd3SMoni Shoua } 23879857cd3SMoni Shoua 23979857cd3SMoni Shoua /* register notifier */ 24079857cd3SMoni Shoua mdev->nb.notifier_call = mlx4_en_netdev_event; 24179857cd3SMoni Shoua if (register_netdevice_notifier(&mdev->nb)) { 24279857cd3SMoni Shoua mdev->nb.notifier_call = NULL; 24379857cd3SMoni Shoua mlx4_err(mdev, "Failed to create notifier\n"); 24479857cd3SMoni Shoua } 24579857cd3SMoni Shoua } 24679857cd3SMoni Shoua 2475a2cc190SJeff Kirsher static void *mlx4_en_add(struct mlx4_dev *dev) 2485a2cc190SJeff Kirsher { 2495a2cc190SJeff Kirsher struct mlx4_en_dev *mdev; 2505a2cc190SJeff Kirsher int i; 2515a2cc190SJeff Kirsher 2525a2cc190SJeff Kirsher printk_once(KERN_INFO "%s", mlx4_en_version); 2535a2cc190SJeff Kirsher 254b2adaca9SJoe Perches mdev = kzalloc(sizeof(*mdev), GFP_KERNEL); 255c2a3d4b4SJack Morgenstein if (!mdev) 2565a2cc190SJeff Kirsher goto err_free_res; 2575a2cc190SJeff Kirsher 2585a2cc190SJeff Kirsher if (mlx4_pd_alloc(dev, &mdev->priv_pdn)) 2595a2cc190SJeff Kirsher goto err_free_dev; 2605a2cc190SJeff Kirsher 2615a2cc190SJeff Kirsher if (mlx4_uar_alloc(dev, &mdev->priv_uar)) 2625a2cc190SJeff Kirsher goto err_pd; 2635a2cc190SJeff Kirsher 2645a2cc190SJeff Kirsher mdev->uar_map = ioremap((phys_addr_t) mdev->priv_uar.pfn << PAGE_SHIFT, 2655a2cc190SJeff Kirsher PAGE_SIZE); 2665a2cc190SJeff Kirsher if (!mdev->uar_map) 2675a2cc190SJeff Kirsher goto err_uar; 2685a2cc190SJeff Kirsher spin_lock_init(&mdev->uar_lock); 2695a2cc190SJeff Kirsher 2705a2cc190SJeff Kirsher mdev->dev = dev; 271872bf2fbSYishai Hadas mdev->dma_device = &dev->persist->pdev->dev; 272872bf2fbSYishai Hadas mdev->pdev = dev->persist->pdev; 2735a2cc190SJeff Kirsher mdev->device_up = false; 2745a2cc190SJeff Kirsher 2755a2cc190SJeff Kirsher mdev->LSO_support = !!(dev->caps.flags & (1 << 15)); 2765a2cc190SJeff Kirsher if (!mdev->LSO_support) 2771a91de28SJoe Perches mlx4_warn(mdev, "LSO not supported, please upgrade to later FW version to enable LSO\n"); 2785a2cc190SJeff Kirsher 2795a2cc190SJeff Kirsher if (mlx4_mr_alloc(mdev->dev, mdev->priv_pdn, 0, ~0ull, 2805a2cc190SJeff Kirsher MLX4_PERM_LOCAL_WRITE | MLX4_PERM_LOCAL_READ, 2815a2cc190SJeff Kirsher 0, 0, &mdev->mr)) { 2825a2cc190SJeff Kirsher mlx4_err(mdev, "Failed allocating memory region\n"); 2837398af40SAlexander Guller goto err_map; 2845a2cc190SJeff Kirsher } 2855a2cc190SJeff Kirsher if (mlx4_mr_enable(mdev->dev, &mdev->mr)) { 2865a2cc190SJeff Kirsher mlx4_err(mdev, "Failed enabling memory region\n"); 2875a2cc190SJeff Kirsher goto err_mr; 2885a2cc190SJeff Kirsher } 2895a2cc190SJeff Kirsher 2905a2cc190SJeff Kirsher /* Build device profile according to supplied module parameters */ 291c2a3d4b4SJack Morgenstein if (mlx4_en_get_profile(mdev)) { 2921a91de28SJoe Perches mlx4_err(mdev, "Bad module parameters, aborting\n"); 2935a2cc190SJeff Kirsher goto err_mr; 2945a2cc190SJeff Kirsher } 2955a2cc190SJeff Kirsher 2965a2cc190SJeff Kirsher /* Configure which ports to start according to module parameters */ 2975a2cc190SJeff Kirsher mdev->port_cnt = 0; 2985a2cc190SJeff Kirsher mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) 2995a2cc190SJeff Kirsher mdev->port_cnt++; 3005a2cc190SJeff Kirsher 3011ec4864bSAmir Vadai /* Initialize time stamp mechanism */ 3021ec4864bSAmir Vadai if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 3031ec4864bSAmir Vadai mlx4_en_init_timestamp(mdev); 3041ec4864bSAmir Vadai 30502512482SIdo Shamay /* Set default number of RX rings*/ 30602512482SIdo Shamay mlx4_en_set_num_rx_rings(mdev); 3075a2cc190SJeff Kirsher 3085a2cc190SJeff Kirsher /* Create our own workqueue for reset/multicast tasks 3095a2cc190SJeff Kirsher * Note: we cannot use the shared workqueue because of deadlocks caused 3105a2cc190SJeff Kirsher * by the rtnl lock */ 3115a2cc190SJeff Kirsher mdev->workqueue = create_singlethread_workqueue("mlx4_en"); 312c2a3d4b4SJack Morgenstein if (!mdev->workqueue) 3135a2cc190SJeff Kirsher goto err_mr; 3145a2cc190SJeff Kirsher 3155a2cc190SJeff Kirsher /* At this stage all non-port specific tasks are complete: 3165a2cc190SJeff Kirsher * mark the card state as up */ 3175a2cc190SJeff Kirsher mutex_init(&mdev->state_lock); 3185a2cc190SJeff Kirsher mdev->device_up = true; 3195a2cc190SJeff Kirsher 3205a2cc190SJeff Kirsher return mdev; 3215a2cc190SJeff Kirsher 3225a2cc190SJeff Kirsher err_mr: 32361083720SShani Michaeli (void) mlx4_mr_free(dev, &mdev->mr); 3247398af40SAlexander Guller err_map: 3258850494aSDotan Barak if (mdev->uar_map) 3267398af40SAlexander Guller iounmap(mdev->uar_map); 3275a2cc190SJeff Kirsher err_uar: 3285a2cc190SJeff Kirsher mlx4_uar_free(dev, &mdev->priv_uar); 3295a2cc190SJeff Kirsher err_pd: 3305a2cc190SJeff Kirsher mlx4_pd_free(dev, mdev->priv_pdn); 3315a2cc190SJeff Kirsher err_free_dev: 3325a2cc190SJeff Kirsher kfree(mdev); 3335a2cc190SJeff Kirsher err_free_res: 3345a2cc190SJeff Kirsher return NULL; 3355a2cc190SJeff Kirsher } 3365a2cc190SJeff Kirsher 3375a2cc190SJeff Kirsher static struct mlx4_interface mlx4_en_interface = { 3385a2cc190SJeff Kirsher .add = mlx4_en_add, 3395a2cc190SJeff Kirsher .remove = mlx4_en_remove, 3405a2cc190SJeff Kirsher .event = mlx4_en_event, 3415a2cc190SJeff Kirsher .get_dev = mlx4_en_get_netdev, 3425a2cc190SJeff Kirsher .protocol = MLX4_PROT_ETH, 34379857cd3SMoni Shoua .activate = mlx4_en_activate, 3445a2cc190SJeff Kirsher }; 3455a2cc190SJeff Kirsher 346d0ceebd7SFengguang Wu static void mlx4_en_verify_params(void) 347b97b33a3SEugenia Emantayev { 348b97b33a3SEugenia Emantayev if (pfctx > MAX_PFC_TX) { 349b97b33a3SEugenia Emantayev pr_warn("mlx4_en: WARNING: illegal module parameter pfctx 0x%x - should be in range 0-0x%x, will be changed to default (0)\n", 350b97b33a3SEugenia Emantayev pfctx, MAX_PFC_TX); 351b97b33a3SEugenia Emantayev pfctx = 0; 352b97b33a3SEugenia Emantayev } 353b97b33a3SEugenia Emantayev 354b97b33a3SEugenia Emantayev if (pfcrx > MAX_PFC_RX) { 355b97b33a3SEugenia Emantayev pr_warn("mlx4_en: WARNING: illegal module parameter pfcrx 0x%x - should be in range 0-0x%x, will be changed to default (0)\n", 356b97b33a3SEugenia Emantayev pfcrx, MAX_PFC_RX); 357b97b33a3SEugenia Emantayev pfcrx = 0; 358b97b33a3SEugenia Emantayev } 359b97b33a3SEugenia Emantayev 360b97b33a3SEugenia Emantayev if (inline_thold < MIN_PKT_LEN || inline_thold > MAX_INLINE) { 361b97b33a3SEugenia Emantayev pr_warn("mlx4_en: WARNING: illegal module parameter inline_thold %d - should be in range %d-%d, will be changed to default (%d)\n", 362b97b33a3SEugenia Emantayev inline_thold, MIN_PKT_LEN, MAX_INLINE, MAX_INLINE); 363b97b33a3SEugenia Emantayev inline_thold = MAX_INLINE; 364b97b33a3SEugenia Emantayev } 365b97b33a3SEugenia Emantayev } 366b97b33a3SEugenia Emantayev 3675a2cc190SJeff Kirsher static int __init mlx4_en_init(void) 3685a2cc190SJeff Kirsher { 369b97b33a3SEugenia Emantayev mlx4_en_verify_params(); 370b97b33a3SEugenia Emantayev 3715a2cc190SJeff Kirsher return mlx4_register_interface(&mlx4_en_interface); 3725a2cc190SJeff Kirsher } 3735a2cc190SJeff Kirsher 3745a2cc190SJeff Kirsher static void __exit mlx4_en_cleanup(void) 3755a2cc190SJeff Kirsher { 3765a2cc190SJeff Kirsher mlx4_unregister_interface(&mlx4_en_interface); 3775a2cc190SJeff Kirsher } 3785a2cc190SJeff Kirsher 3795a2cc190SJeff Kirsher module_init(mlx4_en_init); 3805a2cc190SJeff Kirsher module_exit(mlx4_en_cleanup); 3815a2cc190SJeff Kirsher 382