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author | alfred <alfred@FreeBSD.org> | 2013-12-19 07:33:07 +0000 |
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committer | alfred <alfred@FreeBSD.org> | 2013-12-19 07:33:07 +0000 |
commit | a0d88ab700e7d868a16f72f50936e03dfa2f173f (patch) | |
tree | e762ce367d9516e256bb6b2722b342c8c1bbbc1a /sys | |
parent | 786890d4b74abe8f269d80f74c413de8cfba34c9 (diff) | |
download | FreeBSD-src-a0d88ab700e7d868a16f72f50936e03dfa2f173f.zip FreeBSD-src-a0d88ab700e7d868a16f72f50936e03dfa2f173f.tar.gz |
Defer start/stop port to workqueues.
MFC: 259411
Diffstat (limited to 'sys')
-rw-r--r-- | sys/ofed/drivers/net/mlx4/en_netdev.c | 93 | ||||
-rw-r--r-- | sys/ofed/drivers/net/mlx4/mlx4_en.h | 7 |
2 files changed, 75 insertions, 25 deletions
diff --git a/sys/ofed/drivers/net/mlx4/en_netdev.c b/sys/ofed/drivers/net/mlx4/en_netdev.c index 99a9336..fa77652 100644 --- a/sys/ofed/drivers/net/mlx4/en_netdev.c +++ b/sys/ofed/drivers/net/mlx4/en_netdev.c @@ -153,6 +153,19 @@ restart: return (i); } +static void mlx4_en_stop_port(struct net_device *dev) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + + queue_work(priv->mdev->workqueue, &priv->stop_port_task); +} + +static void mlx4_en_start_port(struct net_device *dev) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + + queue_work(priv->mdev->workqueue, &priv->start_port_task); +} static void mlx4_en_set_multicast(struct net_device *dev) { @@ -473,6 +486,7 @@ static void mlx4_en_do_get_stats(struct work_struct *work) queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); } + mlx4_en_QUERY_PORT(priv->mdev, priv->port); mutex_unlock(&mdev->state_lock); } @@ -498,8 +512,31 @@ static void mlx4_en_linkstate(struct work_struct *work) mutex_unlock(&mdev->state_lock); } +static void mlx4_en_lock_and_stop_port(struct work_struct *work) +{ + struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, + stop_port_task); + struct net_device *dev = priv->dev; + struct mlx4_en_dev *mdev = priv->mdev; + + mutex_lock(&mdev->state_lock); + mlx4_en_do_stop_port(dev); + mutex_unlock(&mdev->state_lock); +} + +static void mlx4_en_lock_and_start_port(struct work_struct *work) +{ + struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, + start_port_task); + struct net_device *dev = priv->dev; + struct mlx4_en_dev *mdev = priv->mdev; + + mutex_lock(&mdev->state_lock); + mlx4_en_do_start_port(dev); + mutex_unlock(&mdev->state_lock); +} -int mlx4_en_start_port(struct net_device *dev) +int mlx4_en_do_start_port(struct net_device *dev) { struct mlx4_en_priv *priv = netdev_priv(dev); struct mlx4_en_dev *mdev = priv->mdev; @@ -691,7 +728,7 @@ cq_err: } -void mlx4_en_stop_port(struct net_device *dev) +void mlx4_en_do_stop_port(struct net_device *dev) { struct mlx4_en_priv *priv = netdev_priv(dev); struct mlx4_en_dev *mdev = priv->mdev; @@ -761,8 +798,8 @@ reset: mutex_lock(&mdev->state_lock); if (priv->port_up) { - mlx4_en_stop_port(dev); - if (mlx4_en_start_port(dev)) + mlx4_en_do_stop_port(dev); + if (mlx4_en_do_start_port(dev)) en_err(priv, "Failed restarting port %d\n", priv->port); } mutex_unlock(&mdev->state_lock); @@ -793,7 +830,7 @@ mlx4_en_init_locked(struct mlx4_en_priv *priv) dev = priv->dev; mdev = priv->mdev; if (dev->if_drv_flags & IFF_DRV_RUNNING) - mlx4_en_stop_port(dev); + mlx4_en_do_stop_port(dev); if (!mdev->device_up) { en_err(priv, "Cannot open - device down/disabled\n"); @@ -816,7 +853,7 @@ mlx4_en_init_locked(struct mlx4_en_priv *priv) } mlx4_en_set_default_moderation(priv); - if (mlx4_en_start_port(dev)) + if (mlx4_en_do_start_port(dev)) en_err(priv, "Failed starting port:%d\n", priv->port); } @@ -905,7 +942,7 @@ void mlx4_en_destroy_netdev(struct net_device *dev) mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE); mutex_lock(&mdev->state_lock); - mlx4_en_stop_port(dev); + mlx4_en_do_stop_port(dev); mutex_unlock(&mdev->state_lock); cancel_delayed_work(&priv->stats_task); @@ -925,7 +962,6 @@ void mlx4_en_destroy_netdev(struct net_device *dev) mtx_destroy(&priv->stats_lock.m); mtx_destroy(&priv->vlan_lock.m); - mtx_destroy(&priv->ioctl_lock.m); kfree(priv); if_free(dev); } @@ -951,9 +987,9 @@ static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu) * the port */ en_dbg(DRV, priv, "Change MTU called with card down!?\n"); } else { - mlx4_en_stop_port(dev); + mlx4_en_do_stop_port(dev); mlx4_en_set_default_moderation(priv); - err = mlx4_en_start_port(dev); + err = mlx4_en_do_start_port(dev); if (err) { en_err(priv, "Failed restarting port:%d\n", priv->port); @@ -973,8 +1009,13 @@ static int mlx4_en_calc_media(struct mlx4_en_priv *priv) 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); + /* + * [ShaharK] mlx4_en_QUERY_PORT sleeps and cannot be called under a + * non-sleepable lock. + * I moved it to the periodic mlx4_en_do_get_stats. + 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. */ @@ -1078,7 +1119,6 @@ static int mlx4_en_ioctl(struct ifnet *dev, u_long command, caddr_t data) error = -mlx4_en_change_mtu(dev, ifr->ifr_mtu); break; case SIOCSIFFLAGS: - mutex_lock(&mdev->state_lock); if (dev->if_flags & IFF_UP) { if ((dev->if_drv_flags & IFF_DRV_RUNNING) == 0) mlx4_en_start_port(dev); @@ -1087,16 +1127,24 @@ static int mlx4_en_ioctl(struct ifnet *dev, u_long command, caddr_t data) } else { if (dev->if_drv_flags & IFF_DRV_RUNNING) { mlx4_en_stop_port(dev); - if_link_state_change(dev, LINK_STATE_DOWN); + if_link_state_change(dev, LINK_STATE_DOWN); + /* + * Since mlx4_en_stop_port is defered we + * have to wait till it's finished. + */ + for (int count=0; count<10; count++) { + if (dev->if_drv_flags & IFF_DRV_RUNNING) { + DELAY(20000); + } else { + break; + } + } } } - mutex_unlock(&mdev->state_lock); break; case SIOCADDMULTI: case SIOCDELMULTI: - spin_lock(&priv->ioctl_lock); mlx4_en_set_multicast(dev); - spin_unlock(&priv->ioctl_lock); break; case SIOCSIFMEDIA: case SIOCGIFMEDIA: @@ -1153,7 +1201,7 @@ static int mlx4_en_set_ring_size(struct net_device *dev, mutex_lock(&mdev->state_lock); if (priv->port_up) { port_up = 1; - mlx4_en_stop_port(dev); + mlx4_en_do_stop_port(dev); } mlx4_en_free_resources(priv); priv->prof->tx_ring_size = tx_size; @@ -1164,7 +1212,7 @@ static int mlx4_en_set_ring_size(struct net_device *dev, goto out; } if (port_up) { - err = mlx4_en_start_port(dev); + err = mlx4_en_do_start_port(dev); if (err) en_err(priv, "Failed starting port\n"); } @@ -1256,7 +1304,7 @@ static int mlx4_en_set_rx_ppp(SYSCTL_HANDLER_ARGS) mutex_lock(&mdev->state_lock); if (priv->port_up) { port_up = 1; - mlx4_en_stop_port(priv->dev); + mlx4_en_do_stop_port(priv->dev); } mlx4_en_free_resources(priv); priv->tx_ring_num = tx_ring_num; @@ -1265,7 +1313,7 @@ static int mlx4_en_set_rx_ppp(SYSCTL_HANDLER_ARGS) if (error) en_err(priv, "Failed reallocating port resources\n"); if (error == 0 && port_up) { - error = -mlx4_en_start_port(priv->dev); + error = -mlx4_en_do_start_port(priv->dev); if (error) en_err(priv, "Failed starting port\n"); } @@ -1517,8 +1565,9 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, priv->msg_enable = MLX4_EN_MSG_LEVEL; priv->ip_reasm = priv->mdev->profile.ip_reasm; mtx_init(&priv->stats_lock.m, "mlx4 stats", NULL, MTX_DEF); - mtx_init(&priv->ioctl_lock.m, "mlx4 ioctl", NULL, MTX_DEF); mtx_init(&priv->vlan_lock.m, "mlx4 vlan", NULL, MTX_DEF); + INIT_WORK(&priv->start_port_task, mlx4_en_lock_and_start_port); + INIT_WORK(&priv->stop_port_task, mlx4_en_lock_and_stop_port); 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); diff --git a/sys/ofed/drivers/net/mlx4/mlx4_en.h b/sys/ofed/drivers/net/mlx4/mlx4_en.h index 7f3c352..0dc5fe6 100644 --- a/sys/ofed/drivers/net/mlx4/mlx4_en.h +++ b/sys/ofed/drivers/net/mlx4/mlx4_en.h @@ -493,7 +493,6 @@ struct mlx4_en_priv { spinlock_t vlan_lock; struct mlx4_en_port_state port_state; spinlock_t stats_lock; - spinlock_t ioctl_lock; unsigned long last_moder_packets[MAX_RX_RINGS]; unsigned long last_moder_tx_packets; @@ -546,6 +545,8 @@ struct mlx4_en_priv { struct mlx4_en_cq rx_cq[MAX_RX_RINGS]; struct mlx4_en_tx_hash_entry tx_hash[MLX4_EN_TX_HASH_SIZE]; struct work_struct mcast_task; + struct work_struct start_port_task; + struct work_struct stop_port_task; struct work_struct watchdog_task; struct work_struct linkstate_task; struct delayed_work stats_task; @@ -580,8 +581,8 @@ void mlx4_en_destroy_netdev(struct net_device *dev); int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, struct mlx4_en_port_profile *prof); -int mlx4_en_start_port(struct net_device *dev); -void mlx4_en_stop_port(struct net_device *dev); +int mlx4_en_do_start_port(struct net_device *dev); +void mlx4_en_do_stop_port(struct net_device *dev); void mlx4_en_free_resources(struct mlx4_en_priv *priv); int mlx4_en_alloc_resources(struct mlx4_en_priv *priv); 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