diff options
Diffstat (limited to 'sys/ofed/drivers/net/mlx4/en_netdev.c')
| -rw-r--r-- | sys/ofed/drivers/net/mlx4/en_netdev.c | 1511 |
1 files changed, 1511 insertions, 0 deletions
diff --git a/sys/ofed/drivers/net/mlx4/en_netdev.c b/sys/ofed/drivers/net/mlx4/en_netdev.c new file mode 100644 index 0000000..531f46f --- /dev/null +++ b/sys/ofed/drivers/net/mlx4/en_netdev.c @@ -0,0 +1,1511 @@ +/* + * 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 "mlx4_en.h" + +#include <linux/mlx4/driver.h> +#include <linux/mlx4/device.h> +#include <linux/mlx4/cmd.h> +#include <linux/mlx4/cq.h> + +#include <linux/delay.h> +#include <net/ethernet.h> +#include <net/if_vlan_var.h> +#include <sys/sockio.h> + +static void mlx4_en_sysctl_stat(struct mlx4_en_priv *priv); + +static void mlx4_en_vlan_rx_add_vid(void *arg, struct net_device *dev, u16 vid) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + int idx; + u8 field; + + if ((vid == 0) || (vid > 4095)) /* Invalid */ + return; + + en_dbg(HW, priv, "adding VLAN:%d\n", vid); + + spin_lock(&priv->vlan_lock); + priv->vlgrp_modified = true; + idx = vid >> 5; + field = 1 << (vid & 0x1f); + if (priv->vlan_unregister[idx] & field) + priv->vlan_unregister[idx] &= ~field; + else + priv->vlan_register[idx] |= field; + priv->vlans[idx] |= field; + spin_unlock(&priv->vlan_lock); +} + +static void mlx4_en_vlan_rx_kill_vid(void *arg, struct net_device *dev, u16 vid) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + int idx; + u8 field; + + if ((vid == 0) || (vid > 4095)) /* Invalid */ + return; + en_dbg(HW, priv, "Killing VID:%d\n", vid); + spin_lock(&priv->vlan_lock); + priv->vlgrp_modified = true; + idx = vid >> 5; + field = 1 << (vid & 0x1f); + if (priv->vlan_register[idx] & field) + priv->vlan_register[idx] &= ~field; + else + priv->vlan_unregister[idx] |= field; + priv->vlans[idx] &= ~field; + spin_unlock(&priv->vlan_lock); +} + +u64 mlx4_en_mac_to_u64(u8 *addr) +{ + u64 mac = 0; + int i; + + for (i = 0; i < ETHER_ADDR_LEN; i++) { + mac <<= 8; + mac |= addr[i]; + } + return mac; +} + +static int mlx4_en_cache_mclist(struct net_device *dev, u64 **mcaddrp) +{ + struct ifmultiaddr *ifma;; + u64 *mcaddr; + int cnt; + int i; + + *mcaddrp = NULL; +restart: + cnt = 0; + if_maddr_rlock(dev); + TAILQ_FOREACH(ifma, &dev->if_multiaddrs, ifma_link) { + if (ifma->ifma_addr->sa_family != AF_LINK) + continue; + if (((struct sockaddr_dl *)ifma->ifma_addr)->sdl_alen != + ETHER_ADDR_LEN) + continue; + cnt++; + } + if_maddr_runlock(dev); + if (cnt == 0) + return (0); + mcaddr = kmalloc(sizeof(u64) * cnt, GFP_KERNEL); + if (mcaddr == NULL) + return (0); + i = 0; + if_maddr_rlock(dev); + TAILQ_FOREACH(ifma, &dev->if_multiaddrs, ifma_link) { + if (ifma->ifma_addr->sa_family != AF_LINK) + continue; + if (((struct sockaddr_dl *)ifma->ifma_addr)->sdl_alen != + ETHER_ADDR_LEN) + continue; + /* Make sure the list didn't grow. */ + if (i == cnt) { + if_maddr_runlock(dev); + kfree(mcaddr); + goto restart; + } + mcaddr[i++] = mlx4_en_mac_to_u64( + LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); + } + if_maddr_runlock(dev); + *mcaddrp = mcaddr; + return (i); +} + + +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 net_device *dev = priv->dev; + struct mlx4_en_dev *mdev = priv->mdev; + int err; + + mutex_lock(&mdev->state_lock); + if (!mdev->device_up) { + en_dbg(HW, priv, "Card is not up, " + "ignoring multicast change.\n"); + goto out; + } + if (!priv->port_up) { + en_dbg(HW, priv, "Port is down, " + "ignoring multicast change.\n"); + goto out; + } + + /* + * Promsicuous mode: disable all filters + */ + + if (dev->if_flags & IFF_PROMISC) { + if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) { + 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) + en_err(priv, "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) + en_err(priv, "Failed disabling " + "multicast filter\n"); + + /* Disable port VLAN filter */ + err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, NULL); + if (err) + en_err(priv, "Failed disabling VLAN filter\n"); + } + goto out; + } + + /* + * Not in promiscous mode + */ + + if (priv->flags & MLX4_EN_FLAG_PROMISC) { + 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) + en_err(priv, "Failed disabling promiscous mode\n"); + + /* Enable port VLAN filter */ + err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, priv->vlans); + if (err) + en_err(priv, "Failed enabling VLAN filter\n"); + } + + /* Enable/disable the multicast filter according to IFF_ALLMULTI */ + if (dev->if_flags & IFF_ALLMULTI) { + err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, + 0, MLX4_MCAST_DISABLE); + if (err) + en_err(priv, "Failed disabling multicast filter\n"); + } else { + u64 *mcaddr; + int mccount; + int i; + + err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, + 0, MLX4_MCAST_DISABLE); + if (err) + en_err(priv, "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 */ + mccount = mlx4_en_cache_mclist(dev, &mcaddr); + for (i = 0; i < mccount; i++) + mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, + mcaddr[i], 0, MLX4_MCAST_CONFIG); + err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, + 0, MLX4_MCAST_ENABLE); + if (err) + en_err(priv, "Failed enabling multicast filter\n"); + + kfree(mcaddr); + } +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); + if (priv->rx_ring[i].use_frags) + mlx4_en_process_rx_cq(dev, cq, 0); + else + mlx4_en_process_rx_cq_mb(dev, cq, 0); + spin_unlock_irqrestore(&cq->lock, flags); + } +} +#endif + +static void mlx4_en_watchdog_timeout(void *arg) +{ + struct mlx4_en_priv *priv = arg; + struct mlx4_en_dev *mdev = priv->mdev; + + en_dbg(DRV, priv, "Scheduling watchdog\n"); + queue_work(mdev->workqueue, &priv->watchdog_task); + if (priv->port_up) + callout_reset(&priv->watchdog_timer, MLX4_EN_WATCHDOG_TIMEOUT, + mlx4_en_watchdog_timeout, priv); +} + + +/* XXX This clears user settings in too many cases. */ +static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv) +{ + 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 = MLX4_EN_RX_COAL_TARGET / priv->dev->if_mtu + 1; + priv->rx_usecs = MLX4_EN_RX_COAL_TIME; + en_dbg(INTR, priv, "Default coalesing params for mtu:%ld - " + "rx_frames:%d rx_usecs:%d\n", + priv->dev->if_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 = 1; + 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_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(&priv->stats_lock); + rx_packets = priv->dev->if_ipackets; + rx_bytes = priv->dev->if_ibytes; + tx_packets = priv->dev->if_opackets; + spin_unlock(&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 || + avg_pkt_size < MLX4_EN_AVG_PKT_SMALL) + 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_handle_vlans(struct mlx4_en_priv *priv) +{ + u8 vlan_register[VLAN_FLTR_SIZE]; + u8 vlan_unregister[VLAN_FLTR_SIZE]; + int i, j, idx; + u16 vid; + + /* cache the vlan data for processing + * done under lock to avoid changes during work */ + spin_lock(&priv->vlan_lock); + for (i = 0; i < VLAN_FLTR_SIZE; i++) { + vlan_register[i] = priv->vlan_register[i]; + priv->vlan_register[i] = 0; + vlan_unregister[i] = priv->vlan_unregister[i]; + priv->vlan_unregister[i] = 0; + } + priv->vlgrp_modified = false; + spin_unlock(&priv->vlan_lock); + + /* Configure the vlan filter + * The vlgrp is updated with all the vids that need to be allowed */ + if (mlx4_SET_VLAN_FLTR(priv->mdev->dev, priv->port, priv->vlans)) + en_err(priv, "Failed configuring VLAN filter\n"); + + /* Configure the VLAN table */ + for (i = 0; i < VLAN_FLTR_SIZE; i++) { + for (j = 0; j < 32; j++) { + vid = (i << 5) + j; + if (vlan_register[i] & (1 << j)) + if (mlx4_register_vlan(priv->mdev->dev, priv->port, vid, &idx)) + en_dbg(HW, priv, "failed registering vlan %d\n", vid); + if (vlan_unregister[i] & (1 << j)) { + if (!mlx4_find_cached_vlan(priv->mdev->dev, priv->port, vid, &idx)) + mlx4_unregister_vlan(priv->mdev->dev, priv->port, idx); + else + en_dbg(HW, priv, "could not find vid %d in cache\n", vid); + } + } + } +} + +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) { + if (priv->vlgrp_modified) + mlx4_en_handle_vlans(priv); + + mlx4_en_auto_moderation(priv); + } + + queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); + } + if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) { + panic("mlx4_en_do_get_stats: Unexpected mac removed for %d\n", + priv->port); + mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0; + } + 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_link_state_change(priv->dev, LINK_STATE_DOWN); + } else { + en_info(priv, "Link Up\n"); + if_link_state_change(priv->dev, LINK_STATE_UP); + } + } + 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->if_mtu = min(dev->if_mtu, priv->max_mtu); + mlx4_en_calc_rx_buf(dev); + en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_mb_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_mb_size + ETHER_CRC_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, + mlx4_en_mac_to_u64(IF_LLADDR(dev)), + &priv->mac_index); + if (err) { + en_err(priv, "Failed setting port mac\n"); + goto tx_err; + } + mdev->mac_removed[priv->port] = 0; + + /* 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; + } + + /* Set the various hardware offload abilities */ + dev->if_hwassist = 0; + if (dev->if_capenable & IFCAP_TSO4) + dev->if_hwassist |= CSUM_TSO; + if (dev->if_capenable & IFCAP_TXCSUM) + dev->if_hwassist |= (CSUM_TCP | CSUM_UDP | CSUM_IP); + if (dev->if_capenable & IFCAP_RXCSUM) + priv->rx_csum = 1; + else + priv->rx_csum = 0; + + priv->port_up = true; + + /* Populate multicast list */ + mlx4_en_set_multicast(dev); + + /* Enable the queues. */ + atomic_clear_int(&dev->if_drv_flags, IFF_DRV_OACTIVE); + atomic_set_int(&dev->if_drv_flags, IFF_DRV_RUNNING); + + callout_reset(&priv->watchdog_timer, MLX4_EN_WATCHDOG_TIMEOUT, + mlx4_en_watchdog_timeout, priv); + + 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; + } + + /* Set port as not active */ + priv->port_up = false; + + /* Unregister Mac address for the port */ + mlx4_unregister_mac(mdev->dev, priv->port, priv->mac_index); + mdev->mac_removed[priv->port] = 1; + + /* 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]); + mlx4_en_deactivate_cq(priv, &priv->rx_cq[i]); + } + + /* close port*/ + mlx4_CLOSE_PORT(mdev->dev, priv->port); + + callout_stop(&priv->watchdog_timer); + + atomic_clear_int(&dev->if_drv_flags, IFF_DRV_RUNNING); +} + +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; + struct mlx4_en_tx_ring *ring; + int i; + + if (priv->blocked == 0 || priv->port_up == 0) + return; + for (i = 0; i < priv->tx_ring_num; i++) { + ring = &priv->tx_ring[i]; + if (ring->blocked && + ring->watchdog_time + MLX4_EN_WATCHDOG_TIMEOUT < ticks) + goto reset; + } + return; + +reset: + priv->port_stats.tx_timeout++; + 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 void +mlx4_en_init(void *arg) +{ + struct mlx4_en_priv *priv; + struct mlx4_en_dev *mdev; + struct ifnet *dev; + int i; + + priv = arg; + dev = priv->dev; + mdev = priv->mdev; + mutex_lock(&mdev->state_lock); + if (dev->if_drv_flags & IFF_DRV_RUNNING) + mlx4_en_stop_port(dev); + + if (!mdev->device_up) { + en_err(priv, "Cannot open - device down/disabled\n"); + 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->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); + if (mlx4_en_start_port(dev)) + en_err(priv, "Failed starting port:%d\n", priv->port); + +out: + mutex_unlock(&mdev->state_lock); +} + +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]); + } + /* Free the stats tree when we resize the rings. */ + if (priv->sysctl) + sysctl_ctx_free(&priv->stat_ctx); + +} + +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 (i > priv->rx_ring_num - priv->udp_rings - 1) + priv->rx_ring[i].use_frags = 0; + else + priv->rx_ring[i].use_frags = 1; + if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i], + prof->rx_ring_size)) + goto err; + } + + /* Re-create stat sysctls in case the number of rings changed. */ + mlx4_en_sysctl_stat(priv); + + /* Populate Tx priority mappings */ + mlx4_en_set_prio_map(priv, priv->tx_prio_map, + prof->tx_ring_num - MLX4_EN_NUM_HASH_RINGS); + + 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); + + if (priv->vlan_attach != NULL) + EVENTHANDLER_DEREGISTER(vlan_config, priv->vlan_attach); + if (priv->vlan_detach != NULL) + EVENTHANDLER_DEREGISTER(vlan_unconfig, priv->vlan_detach); + + /* Unregister device - this will close the port if it was up */ + if (priv->registered) + ether_ifdetach(dev); + + if (priv->allocated) + mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE); + + if (priv->sysctl) + sysctl_ctx_free(&priv->conf_ctx); + + 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); + mtx_destroy(&priv->stats_lock.m); + mtx_destroy(&priv->vlan_lock.m); + kfree(priv); + if_free(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:%ld new:%d\n", + dev->if_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; + } + mutex_lock(&mdev->state_lock); + dev->if_mtu = new_mtu; + if (dev->if_drv_flags & IFF_DRV_RUNNING) { + 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 int mlx4_en_calc_media(struct mlx4_en_priv *priv) +{ + int trans_type; + int active; + + active = IFM_ETHER; + if (priv->last_link_state == MLX4_DEV_EVENT_PORT_DOWN) + return (active); + if (mlx4_en_QUERY_PORT(priv->mdev, priv->port)) + return (active); + active |= IFM_FDX; + trans_type = priv->port_state.transciver; + /* XXX I don't know all of the transceiver values. */ + if (priv->port_state.link_speed == 1000) + active |= IFM_1000_T; + else if (trans_type > 0 && trans_type <= 0xC) + active |= IFM_10G_SR; + else if (trans_type == 0x80 || trans_type == 0) + active |= IFM_10G_CX4; + if (priv->prof->tx_pause) + active |= IFM_ETH_TXPAUSE; + if (priv->prof->rx_pause) + active |= IFM_ETH_RXPAUSE; + + return (active); +} + + +static void mlx4_en_media_status(struct ifnet *dev, struct ifmediareq *ifmr) +{ + struct mlx4_en_priv *priv; + + priv = dev->if_softc; + ifmr->ifm_status = IFM_AVALID; + if (priv->last_link_state != MLX4_DEV_EVENT_PORT_DOWN) + ifmr->ifm_status |= IFM_ACTIVE; + ifmr->ifm_active = mlx4_en_calc_media(priv); + + return; +} + +static int mlx4_en_media_change(struct ifnet *dev) +{ + struct mlx4_en_priv *priv; + struct ifmedia *ifm; + int rxpause; + int txpause; + int error; + + priv = dev->if_softc; + ifm = &priv->media; + rxpause = txpause = 0; + error = 0; + + if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER) + return (EINVAL); + switch (IFM_SUBTYPE(ifm->ifm_media)) { + case IFM_AUTO: + break; + case IFM_10G_SR: + case IFM_10G_CX4: + case IFM_1000_T: + if (IFM_SUBTYPE(ifm->ifm_media) == + IFM_SUBTYPE(mlx4_en_calc_media(priv)) && + (ifm->ifm_media & IFM_FDX)) + break; + /* Fallthrough */ + default: + printf("%s: Only auto media type\n", if_name(dev)); + return (EINVAL); + } + /* Allow user to set/clear pause */ + if (IFM_OPTIONS(ifm->ifm_media) & IFM_ETH_RXPAUSE) + rxpause = 1; + if (IFM_OPTIONS(ifm->ifm_media) & IFM_ETH_TXPAUSE) + txpause = 1; + if (priv->prof->tx_pause != txpause || priv->prof->rx_pause != rxpause) { + priv->prof->tx_pause = txpause; + priv->prof->rx_pause = rxpause; + error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port, + priv->rx_mb_size + ETHER_CRC_LEN, priv->prof->tx_pause, + priv->prof->tx_ppp, priv->prof->rx_pause, + priv->prof->rx_ppp); + } + return (error); +} + +static int mlx4_en_ioctl(struct ifnet *dev, u_long command, caddr_t data) +{ + struct mlx4_en_priv *priv; + struct mlx4_en_dev *mdev; + struct ifreq *ifr; + int error; + int mask; + + error = 0; + mask = 0; + priv = dev->if_softc; + mdev = priv->mdev; + ifr = (struct ifreq *) data; + switch (command) { + case SIOCSIFMTU: + error = -mlx4_en_change_mtu(dev, ifr->ifr_mtu); + break; + case SIOCSIFFLAGS: + if (dev->if_flags & IFF_UP) { + if ((dev->if_drv_flags & IFF_DRV_RUNNING) == 0) { + mutex_lock(&mdev->state_lock); + mlx4_en_start_port(dev); + mutex_unlock(&mdev->state_lock); + } else + mlx4_en_set_multicast(dev); + } else { + mutex_lock(&mdev->state_lock); + if (dev->if_drv_flags & IFF_DRV_RUNNING) { + mlx4_en_stop_port(dev); + if_link_state_change(dev, LINK_STATE_DOWN); + } + mutex_unlock(&mdev->state_lock); + } + break; + case SIOCADDMULTI: + case SIOCDELMULTI: + mlx4_en_set_multicast(dev); + break; + case SIOCSIFMEDIA: + case SIOCGIFMEDIA: + error = ifmedia_ioctl(dev, ifr, &priv->media, command); + break; + case SIOCSIFCAP: + mask = ifr->ifr_reqcap ^ dev->if_capenable; + if (mask & IFCAP_HWCSUM) + dev->if_capenable ^= IFCAP_HWCSUM; + if (mask & IFCAP_TSO4) + dev->if_capenable ^= IFCAP_TSO4; + if (mask & IFCAP_LRO) + dev->if_capenable ^= IFCAP_LRO; + if (mask & IFCAP_VLAN_HWTAGGING) + dev->if_capenable ^= IFCAP_VLAN_HWTAGGING; + if (mask & IFCAP_VLAN_HWFILTER) + dev->if_capenable ^= IFCAP_VLAN_HWFILTER; + if (dev->if_drv_flags & IFF_DRV_RUNNING) + mlx4_en_init(priv); + VLAN_CAPABILITIES(dev); + break; + default: + error = ether_ioctl(dev, command, data); + break; + } + + return (error); +} + +static int mlx4_en_set_ring_size(struct net_device *dev, + int rx_size, int tx_size) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = priv->mdev; + int port_up = 0; + int err = 0; + + rx_size = roundup_pow_of_two(rx_size); + rx_size = max_t(u32, rx_size, MLX4_EN_MIN_RX_SIZE); + rx_size = min_t(u32, rx_size, MLX4_EN_MAX_RX_SIZE); + tx_size = roundup_pow_of_two(tx_size); + tx_size = max_t(u32, tx_size, MLX4_EN_MIN_TX_SIZE); + tx_size = min_t(u32, tx_size, MLX4_EN_MAX_TX_SIZE); + + if (rx_size == (priv->port_up ? + priv->rx_ring[0].actual_size : priv->rx_ring[0].size) && + tx_size == priv->tx_ring[0].size) + return 0; + + mutex_lock(&mdev->state_lock); + if (priv->port_up) { + port_up = 1; + mlx4_en_stop_port(dev); + } + mlx4_en_free_resources(priv); + priv->prof->tx_ring_size = tx_size; + priv->prof->rx_ring_size = rx_size; + err = mlx4_en_alloc_resources(priv); + if (err) { + en_err(priv, "Failed reallocating port resources\n"); + goto out; + } + if (port_up) { + err = mlx4_en_start_port(dev); + if (err) + en_err(priv, "Failed starting port\n"); + } +out: + mutex_unlock(&mdev->state_lock); + return err; +} + +static int mlx4_en_set_rx_ring_size(SYSCTL_HANDLER_ARGS) +{ + struct mlx4_en_priv *priv; + int size; + int error; + + priv = arg1; + size = priv->prof->rx_ring_size; + error = sysctl_handle_int(oidp, &size, 0, req); + if (error || !req->newptr) + return (error); + error = -mlx4_en_set_ring_size(priv->dev, size, + priv->prof->tx_ring_size); + + return (error); +} + +static int mlx4_en_set_tx_ring_size(SYSCTL_HANDLER_ARGS) +{ + struct mlx4_en_priv *priv; + int size; + int error; + + priv = arg1; + size = priv->prof->tx_ring_size; + error = sysctl_handle_int(oidp, &size, 0, req); + if (error || !req->newptr) + return (error); + error = -mlx4_en_set_ring_size(priv->dev, priv->prof->rx_ring_size, + size); + + return (error); +} + +static void mlx4_en_sysctl_conf(struct mlx4_en_priv *priv) +{ + struct net_device *dev; + struct sysctl_ctx_list *ctx; + struct sysctl_oid *node; + struct sysctl_oid_list *node_list; + struct sysctl_oid *coal; + struct sysctl_oid_list *coal_list; + + dev = priv->dev; + ctx = &priv->conf_ctx; + + sysctl_ctx_init(ctx); + priv->sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_hw), + OID_AUTO, dev->if_xname, CTLFLAG_RD, 0, "mlx4 10gig ethernet"); + node = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->sysctl), OID_AUTO, + "conf", CTLFLAG_RD, NULL, "Configuration"); + node_list = SYSCTL_CHILDREN(node); + + SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "msg_enable", + CTLFLAG_RW, &priv->msg_enable, 0, + "Driver message enable bitfield"); + SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "rx_rings", + CTLTYPE_INT | CTLFLAG_RD, &priv->rx_ring_num, 0, + "Number of receive rings"); + SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_rings", + CTLTYPE_INT | CTLFLAG_RD, &priv->tx_ring_num, 0, + "Number of transmit rings"); + SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "rx_size", + CTLTYPE_INT | CTLFLAG_RW, priv, 0, mlx4_en_set_rx_ring_size, "I", + "Receive ring size"); + SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "tx_size", + CTLTYPE_INT | CTLFLAG_RW, priv, 0, mlx4_en_set_tx_ring_size, "I", + "Transmit ring size"); + SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "ip_reasm", + CTLFLAG_RD, &priv->mdev->profile.ip_reasm, 0, + "Allow reassembly of IP fragments."); + + /* Add coalescer configuration. */ + coal = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO, + "coalesce", CTLFLAG_RD, NULL, "Interrupt coalesce configuration"); + coal_list = SYSCTL_CHILDREN(node); + SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "pkt_rate_low", + CTLFLAG_RW, &priv->pkt_rate_low, 0, + "Packets per-second for minimum delay"); + SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "rx_usecs_low", + CTLFLAG_RW, &priv->rx_usecs_low, 0, + "Minimum RX delay in micro-seconds"); + SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "pkt_rate_high", + CTLFLAG_RW, &priv->pkt_rate_high, 0, + "Packets per-second for maximum delay"); + SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "rx_usecs_high", + CTLFLAG_RW, &priv->rx_usecs_high, 0, + "Maximum RX delay in micro-seconds"); + SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "sample_interval", + CTLFLAG_RW, &priv->sample_interval, 0, + "adaptive frequency in units of HZ ticks"); + SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "adaptive_rx_coal", + CTLFLAG_RW, &priv->adaptive_rx_coal, 0, + "Enable adaptive rx coalescing"); +} + +static void mlx4_en_sysctl_stat(struct mlx4_en_priv *priv) +{ + struct net_device *dev; + struct sysctl_ctx_list *ctx; + struct sysctl_oid *node; + struct sysctl_oid_list *node_list; + struct sysctl_oid *ring_node; + struct sysctl_oid_list *ring_list; + struct mlx4_en_tx_ring *tx_ring; + struct mlx4_en_rx_ring *rx_ring; + char namebuf[128]; + int i; + + dev = priv->dev; + + ctx = &priv->stat_ctx; + sysctl_ctx_init(ctx); + node = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->sysctl), OID_AUTO, + "stat", CTLFLAG_RD, NULL, "Statistics"); + node_list = SYSCTL_CHILDREN(node); + +#ifdef MLX4_EN_PERF_STAT + SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_poll", CTLFLAG_RD, + &priv->pstats.tx_poll, "TX Poll calls"); + SYSCTL_ADD_QUAD(ctx, node_list, OID_AUTO, "tx_pktsz_avg", CTLFLAG_RD, + &priv->pstats.tx_pktsz_avg, "TX average packet size"); + SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "inflight_avg", CTLFLAG_RD, + &priv->pstats.inflight_avg, "TX average packets in-flight"); + SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_coal_avg", CTLFLAG_RD, + &priv->pstats.tx_coal_avg, "TX average coalesced completions"); + SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "rx_coal_avg", CTLFLAG_RD, + &priv->pstats.rx_coal_avg, "RX average coalesced completions"); +#endif + + SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tso_packets", CTLFLAG_RD, + &priv->port_stats.tso_packets, "TSO packets sent"); + SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "queue_stopped", CTLFLAG_RD, + &priv->port_stats.queue_stopped, "Queue full"); + SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "wake_queue", CTLFLAG_RD, + &priv->port_stats.wake_queue, "Queue resumed after full"); + SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_timeout", CTLFLAG_RD, + &priv->port_stats.tx_timeout, "Transmit timeouts"); + SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_alloc_failed", CTLFLAG_RD, + &priv->port_stats.rx_alloc_failed, "RX failed to allocate mbuf"); + SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_chksum_good", CTLFLAG_RD, + &priv->port_stats.rx_chksum_good, "RX checksum offload success"); + SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_chksum_none", CTLFLAG_RD, + &priv->port_stats.rx_chksum_none, "RX without checksum offload"); + SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_chksum_offload", + CTLFLAG_RD, &priv->port_stats.tx_chksum_offload, + "TX checksum offloads"); + + /* Could strdup the names and add in a loop. This is simpler. */ + SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "broadcast", CTLFLAG_RD, + &priv->pkstats.broadcast, "Broadcast packets"); + SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio0", CTLFLAG_RD, + &priv->pkstats.tx_prio[0], "TX Priority 0 packets"); + SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio1", CTLFLAG_RD, + &priv->pkstats.tx_prio[1], "TX Priority 1 packets"); + SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio2", CTLFLAG_RD, + &priv->pkstats.tx_prio[2], "TX Priority 2 packets"); + SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio3", CTLFLAG_RD, + &priv->pkstats.tx_prio[3], "TX Priority 3 packets"); + SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio4", CTLFLAG_RD, + &priv->pkstats.tx_prio[4], "TX Priority 4 packets"); + SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio5", CTLFLAG_RD, + &priv->pkstats.tx_prio[5], "TX Priority 5 packets"); + SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio6", CTLFLAG_RD, + &priv->pkstats.tx_prio[6], "TX Priority 6 packets"); + SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_prio7", CTLFLAG_RD, + &priv->pkstats.tx_prio[7], "TX Priority 7 packets"); + SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio0", CTLFLAG_RD, + &priv->pkstats.rx_prio[0], "RX Priority 0 packets"); + SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio1", CTLFLAG_RD, + &priv->pkstats.rx_prio[1], "RX Priority 1 packets"); + SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio2", CTLFLAG_RD, + &priv->pkstats.rx_prio[2], "RX Priority 2 packets"); + SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio3", CTLFLAG_RD, + &priv->pkstats.rx_prio[3], "RX Priority 3 packets"); + SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio4", CTLFLAG_RD, + &priv->pkstats.rx_prio[4], "RX Priority 4 packets"); + SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio5", CTLFLAG_RD, + &priv->pkstats.rx_prio[5], "RX Priority 5 packets"); + SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio6", CTLFLAG_RD, + &priv->pkstats.rx_prio[6], "RX Priority 6 packets"); + SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_prio7", CTLFLAG_RD, + &priv->pkstats.rx_prio[7], "RX Priority 7 packets"); + + for (i = 0; i < priv->tx_ring_num; i++) { + tx_ring = &priv->tx_ring[i]; + snprintf(namebuf, sizeof(namebuf), "tx_ring%d", i); + ring_node = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO, namebuf, + CTLFLAG_RD, NULL, "TX Ring"); + ring_list = SYSCTL_CHILDREN(ring_node); + SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "packets", + CTLFLAG_RD, &tx_ring->packets, "TX packets"); + SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "bytes", + CTLFLAG_RD, &tx_ring->bytes, "TX bytes"); + SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "error", + CTLFLAG_RD, &tx_ring->errors, "TX soft errors"); + + } + for (i = 0; i < priv->rx_ring_num; i++) { + rx_ring = &priv->rx_ring[i]; + snprintf(namebuf, sizeof(namebuf), "rx_ring%d", i); + ring_node = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO, namebuf, + CTLFLAG_RD, NULL, "RX Ring"); + ring_list = SYSCTL_CHILDREN(ring_node); + SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "packets", + CTLFLAG_RD, &rx_ring->packets, "RX packets"); + SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "bytes", + CTLFLAG_RD, &rx_ring->bytes, "RX bytes"); + SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "error", + CTLFLAG_RD, &rx_ring->errors, "RX soft errors"); + SYSCTL_ADD_UINT(ctx, ring_list, OID_AUTO, "lro_queued", + CTLFLAG_RD, &rx_ring->lro.lro_queued, 0, "LRO Queued"); + SYSCTL_ADD_UINT(ctx, ring_list, OID_AUTO, "lro_flushed", + CTLFLAG_RD, &rx_ring->lro.lro_flushed, 0, "LRO Flushed"); + } +} + +int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, + struct mlx4_en_port_profile *prof) +{ + static volatile int mlx4_en_unit; + struct net_device *dev; + struct mlx4_en_priv *priv; + uint8_t dev_addr[ETHER_ADDR_LEN]; + int err; + int i; + + priv = kzalloc(sizeof(*priv), GFP_KERNEL); + dev = priv->dev = if_alloc(IFT_ETHER); + if (dev == NULL) { + mlx4_err(mdev, "Net device allocation failed\n"); + kfree(priv); + return -ENOMEM; + } + dev->if_softc = priv; + if_initname(dev, "mlxen", atomic_fetchadd_int(&mlx4_en_unit, 1)); + dev->if_mtu = ETHERMTU; + dev->if_baudrate = 1000000000; + dev->if_init = mlx4_en_init; + dev->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; + dev->if_ioctl = mlx4_en_ioctl; + dev->if_transmit = mlx4_en_transmit; + dev->if_qflush = mlx4_en_qflush; + dev->if_snd.ifq_maxlen = prof->tx_ring_size; + + /* + * Initialize driver private data + */ + priv->dev = dev; + priv->mdev = mdev; + priv->prof = prof; + priv->port = port; + priv->port_up = false; + priv->rx_csum = 1; + priv->flags = prof->flags; + priv->tx_ring_num = prof->tx_ring_num; + priv->rx_ring_num = prof->rx_ring_num; + priv->udp_rings = mdev->profile.udp_rss ? prof->rx_ring_num / 2 : 1; + priv->mac_index = -1; + priv->msg_enable = MLX4_EN_MSG_LEVEL; + mtx_init(&priv->stats_lock.m, "mlx4 stats", NULL, MTX_DEF); + mtx_init(&priv->vlan_lock.m, "mlx4 vlan", NULL, MTX_DEF); + INIT_WORK(&priv->mcast_task, mlx4_en_do_set_multicast); + INIT_WORK(&priv->watchdog_task, mlx4_en_restart); + INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate); + INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats); + callout_init(&priv->watchdog_timer, 1); + + /* Query for default mac and max mtu */ + priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port]; + priv->mac = mdev->dev->caps.def_mac[priv->port]; + + if (ILLEGAL_MAC(priv->mac)) { + en_err(priv, "Port: %d, invalid mac burned: 0x%llx, quiting\n", + priv->port, priv->mac); + err = -EINVAL; + goto out; + } + + mlx4_en_sysctl_conf(priv); + + err = mlx4_en_alloc_resources(priv); + if (err) + goto out; + + /* Allocate page for receive rings */ + err = mlx4_alloc_hwq_res(mdev->dev, &priv->res, + MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE); + if (err) { + en_err(priv, "Failed to allocate page for rx qps\n"); + goto out; + } + priv->allocated = 1; + + /* + * Set driver features + */ + dev->if_capabilities |= IFCAP_RXCSUM | IFCAP_TXCSUM; + dev->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING; + dev->if_capabilities |= IFCAP_VLAN_HWCSUM | IFCAP_VLAN_HWFILTER; + dev->if_capabilities |= IFCAP_LINKSTATE | IFCAP_JUMBO_MTU; +#if 0 /* Not yet */ + dev->if_capabilities |= IFCAP_WOL; +#endif + if (mdev->LSO_support) + dev->if_capabilities |= IFCAP_TSO | IFCAP_VLAN_HWTSO; + + /* Don't enable LOR unless the user requests. */ + dev->if_capenable = dev->if_capabilities; + + if (mdev->profile.num_lro) + dev->if_capabilities |= IFCAP_LRO; + + /* Register for VLAN events */ + priv->vlan_attach = EVENTHANDLER_REGISTER(vlan_config, + mlx4_en_vlan_rx_add_vid, priv, EVENTHANDLER_PRI_FIRST); + priv->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig, + mlx4_en_vlan_rx_kill_vid, priv, EVENTHANDLER_PRI_FIRST); + + mdev->pndev[priv->port] = dev; + + priv->last_link_state = MLX4_DEV_EVENT_PORT_DOWN; + if_link_state_change(dev, LINK_STATE_DOWN); + + /* Set default MAC */ + for (i = 0; i < ETHER_ADDR_LEN; i++) + dev_addr[ETHER_ADDR_LEN - 1 - i] = (u8) (priv->mac >> (8 * i)); + + ether_ifattach(dev, dev_addr); + ifmedia_init(&priv->media, IFM_IMASK | IFM_ETH_FMASK, + mlx4_en_media_change, mlx4_en_media_status); + ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_1000_T, 0, NULL); + ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_10G_SR, 0, NULL); + ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_10G_CX4, 0, NULL); + ifmedia_add(&priv->media, IFM_ETHER | IFM_AUTO, 0, NULL); + ifmedia_set(&priv->media, IFM_ETHER | IFM_AUTO); + + en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num); + en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num); + + priv->registered = 1; + queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); + + return 0; + +out: + mlx4_en_destroy_netdev(dev); + return err; +} + |
