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Merge branch 'mlx4-fixes'

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Or Gerlitz says:

====================
Mellaox 40G driver fixes for 4.6-rc

With the fix for ARM bug being under the works, these are
few other fixes for mlx4 we have ready to go.

Eran addressed the problematic/wrong reporting of dropped packets, Daniel
fixed some matters related to PPC EEH's and Jenny's patch makes sure
VFs can't change the port's pause settings.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2016-04-21 15:02:41 -04:00
commit 669c00c009
8 changed files with 89 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
View File

@ -337,7 +337,7 @@ static int mlx4_en_get_sset_count(struct net_device *dev, int sset)
case ETH_SS_STATS:
return bitmap_iterator_count(&it) +
(priv->tx_ring_num * 2) +
(priv->rx_ring_num * 2);
(priv->rx_ring_num * 3);
case ETH_SS_TEST:
return MLX4_EN_NUM_SELF_TEST - !(priv->mdev->dev->caps.flags
& MLX4_DEV_CAP_FLAG_UC_LOOPBACK) * 2;
@ -404,6 +404,7 @@ static void mlx4_en_get_ethtool_stats(struct net_device *dev,
for (i = 0; i < priv->rx_ring_num; i++) {
data[index++] = priv->rx_ring[i]->packets;
data[index++] = priv->rx_ring[i]->bytes;
data[index++] = priv->rx_ring[i]->dropped;
}
spin_unlock_bh(&priv->stats_lock);
@ -477,6 +478,8 @@ static void mlx4_en_get_strings(struct net_device *dev,
"rx%d_packets", i);
sprintf(data + (index++) * ETH_GSTRING_LEN,
"rx%d_bytes", i);
sprintf(data + (index++) * ETH_GSTRING_LEN,
"rx%d_dropped", i);
}
break;
case ETH_SS_PRIV_FLAGS:

5
drivers/net/ethernet/mellanox/mlx4/en_port.c
View File

@ -158,6 +158,7 @@ int mlx4_en_DUMP_ETH_STATS(struct mlx4_en_dev *mdev, u8 port, u8 reset)
u64 in_mod = reset << 8 | port;
int err;
int i, counter_index;
unsigned long sw_rx_dropped = 0;
mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
if (IS_ERR(mailbox))
@ -180,6 +181,7 @@ int mlx4_en_DUMP_ETH_STATS(struct mlx4_en_dev *mdev, u8 port, u8 reset)
for (i = 0; i < priv->rx_ring_num; i++) {
stats->rx_packets += priv->rx_ring[i]->packets;
stats->rx_bytes += priv->rx_ring[i]->bytes;
sw_rx_dropped += priv->rx_ring[i]->dropped;
priv->port_stats.rx_chksum_good += priv->rx_ring[i]->csum_ok;
priv->port_stats.rx_chksum_none += priv->rx_ring[i]->csum_none;
priv->port_stats.rx_chksum_complete += priv->rx_ring[i]->csum_complete;
@ -236,7 +238,8 @@ int mlx4_en_DUMP_ETH_STATS(struct mlx4_en_dev *mdev, u8 port, u8 reset)
&mlx4_en_stats->MCAST_prio_1,
NUM_PRIORITIES);
stats->collisions = 0;
stats->rx_dropped = be32_to_cpu(mlx4_en_stats->RDROP);
stats->rx_dropped = be32_to_cpu(mlx4_en_stats->RDROP) +
sw_rx_dropped;
stats->rx_length_errors = be32_to_cpu(mlx4_en_stats->RdropLength);
stats->rx_over_errors = 0;
stats->rx_crc_errors = be32_to_cpu(mlx4_en_stats->RCRC);

2
drivers/net/ethernet/mellanox/mlx4/en_rx.c
View File

@ -943,7 +943,7 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
/* GRO not possible, complete processing here */
skb = mlx4_en_rx_skb(priv, rx_desc, frags, length);
if (!skb) {
priv->stats.rx_dropped++;
ring->dropped++;
goto next;
}

76
drivers/net/ethernet/mellanox/mlx4/main.c
View File

@ -3172,6 +3172,34 @@ static int mlx4_check_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap
return 0;
}
static int mlx4_pci_enable_device(struct mlx4_dev *dev)
{
struct pci_dev *pdev = dev->persist->pdev;
int err = 0;
mutex_lock(&dev->persist->pci_status_mutex);
if (dev->persist->pci_status == MLX4_PCI_STATUS_DISABLED) {
err = pci_enable_device(pdev);
if (!err)
dev->persist->pci_status = MLX4_PCI_STATUS_ENABLED;
}
mutex_unlock(&dev->persist->pci_status_mutex);
return err;
}
static void mlx4_pci_disable_device(struct mlx4_dev *dev)
{
struct pci_dev *pdev = dev->persist->pdev;
mutex_lock(&dev->persist->pci_status_mutex);
if (dev->persist->pci_status == MLX4_PCI_STATUS_ENABLED) {
pci_disable_device(pdev);
dev->persist->pci_status = MLX4_PCI_STATUS_DISABLED;
}
mutex_unlock(&dev->persist->pci_status_mutex);
}
static int mlx4_load_one(struct pci_dev *pdev, int pci_dev_data,
int total_vfs, int *nvfs, struct mlx4_priv *priv,
int reset_flow)
@ -3582,7 +3610,7 @@ static int __mlx4_init_one(struct pci_dev *pdev, int pci_dev_data,
pr_info(DRV_NAME ": Initializing %s\n", pci_name(pdev));
err = pci_enable_device(pdev);
err = mlx4_pci_enable_device(&priv->dev);
if (err) {
dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
return err;
@ -3715,7 +3743,7 @@ err_release_regions:
pci_release_regions(pdev);
err_disable_pdev:
pci_disable_device(pdev);
mlx4_pci_disable_device(&priv->dev);
pci_set_drvdata(pdev, NULL);
return err;
}
@ -3775,6 +3803,7 @@ static int mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
priv->pci_dev_data = id->driver_data;
mutex_init(&dev->persist->device_state_mutex);
mutex_init(&dev->persist->interface_state_mutex);
mutex_init(&dev->persist->pci_status_mutex);
ret = devlink_register(devlink, &pdev->dev);
if (ret)
@ -3923,7 +3952,7 @@ static void mlx4_remove_one(struct pci_dev *pdev)
}
pci_release_regions(pdev);
pci_disable_device(pdev);
mlx4_pci_disable_device(dev);
devlink_unregister(devlink);
kfree(dev->persist);
devlink_free(devlink);
@ -4042,7 +4071,7 @@ static pci_ers_result_t mlx4_pci_err_detected(struct pci_dev *pdev,
if (state == pci_channel_io_perm_failure)
return PCI_ERS_RESULT_DISCONNECT;
pci_disable_device(pdev);
mlx4_pci_disable_device(persist->dev);
return PCI_ERS_RESULT_NEED_RESET;
}
@ -4050,45 +4079,53 @@ static pci_ers_result_t mlx4_pci_slot_reset(struct pci_dev *pdev)
{
struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
struct mlx4_dev *dev = persist->dev;
struct mlx4_priv *priv = mlx4_priv(dev);
int ret;
int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0};
int total_vfs;
int err;
mlx4_err(dev, "mlx4_pci_slot_reset was called\n");
ret = pci_enable_device(pdev);
if (ret) {
mlx4_err(dev, "Can not re-enable device, ret=%d\n", ret);
err = mlx4_pci_enable_device(dev);
if (err) {
mlx4_err(dev, "Can not re-enable device, err=%d\n", err);
return PCI_ERS_RESULT_DISCONNECT;
}
pci_set_master(pdev);
pci_restore_state(pdev);
pci_save_state(pdev);
return PCI_ERS_RESULT_RECOVERED;
}
static void mlx4_pci_resume(struct pci_dev *pdev)
{
struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
struct mlx4_dev *dev = persist->dev;
struct mlx4_priv *priv = mlx4_priv(dev);
int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0};
int total_vfs;
int err;
mlx4_err(dev, "%s was called\n", __func__);
total_vfs = dev->persist->num_vfs;
memcpy(nvfs, dev->persist->nvfs, sizeof(dev->persist->nvfs));
mutex_lock(&persist->interface_state_mutex);
if (!(persist->interface_state & MLX4_INTERFACE_STATE_UP)) {
ret = mlx4_load_one(pdev, priv->pci_dev_data, total_vfs, nvfs,
err = mlx4_load_one(pdev, priv->pci_dev_data, total_vfs, nvfs,
priv, 1);
if (ret) {
mlx4_err(dev, "%s: mlx4_load_one failed, ret=%d\n",
__func__, ret);
if (err) {
mlx4_err(dev, "%s: mlx4_load_one failed, err=%d\n",
__func__, err);
goto end;
}
ret = restore_current_port_types(dev, dev->persist->
err = restore_current_port_types(dev, dev->persist->
curr_port_type, dev->persist->
curr_port_poss_type);
if (ret)
mlx4_err(dev, "could not restore original port types (%d)\n", ret);
if (err)
mlx4_err(dev, "could not restore original port types (%d)\n", err);
}
end:
mutex_unlock(&persist->interface_state_mutex);
return ret ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
}
static void mlx4_shutdown(struct pci_dev *pdev)
@ -4105,6 +4142,7 @@ static void mlx4_shutdown(struct pci_dev *pdev)
static const struct pci_error_handlers mlx4_err_handler = {
.error_detected = mlx4_pci_err_detected,
.slot_reset = mlx4_pci_slot_reset,
.resume = mlx4_pci_resume,
};
static struct pci_driver mlx4_driver = {

2
drivers/net/ethernet/mellanox/mlx4/mlx4.h
View File

@ -586,6 +586,8 @@ struct mlx4_mfunc_master_ctx {
struct mlx4_master_qp0_state qp0_state[MLX4_MAX_PORTS + 1];
int init_port_ref[MLX4_MAX_PORTS + 1];
u16 max_mtu[MLX4_MAX_PORTS + 1];
u8 pptx;
u8 pprx;
int disable_mcast_ref[MLX4_MAX_PORTS + 1];
struct mlx4_resource_tracker res_tracker;
struct workqueue_struct *comm_wq;

1
drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
View File

@ -323,6 +323,7 @@ struct mlx4_en_rx_ring {
unsigned long csum_ok;
unsigned long csum_none;
unsigned long csum_complete;
unsigned long dropped;
int hwtstamp_rx_filter;
cpumask_var_t affinity_mask;
};

13
drivers/net/ethernet/mellanox/mlx4/port.c
View File

@ -1317,6 +1317,19 @@ static int mlx4_common_set_port(struct mlx4_dev *dev, int slave, u32 in_mod,
}
gen_context->mtu = cpu_to_be16(master->max_mtu[port]);
/* Slave cannot change Global Pause configuration */
if (slave != mlx4_master_func_num(dev) &&
((gen_context->pptx != master->pptx) ||
(gen_context->pprx != master->pprx))) {
gen_context->pptx = master->pptx;
gen_context->pprx = master->pprx;
mlx4_warn(dev,
"denying Global Pause change for slave:%d\n",
slave);
} else {
master->pptx = gen_context->pptx;
master->pprx = gen_context->pprx;
}
break;
case MLX4_SET_PORT_GID_TABLE:
/* change to MULTIPLE entries: number of guest's gids

7
include/linux/mlx4/device.h
View File

@ -828,6 +828,11 @@ struct mlx4_vf_dev {
u8 n_ports;
};
enum mlx4_pci_status {
MLX4_PCI_STATUS_DISABLED,
MLX4_PCI_STATUS_ENABLED,
};
struct mlx4_dev_persistent {
struct pci_dev *pdev;
struct mlx4_dev *dev;
@ -841,6 +846,8 @@ struct mlx4_dev_persistent {
u8 state;
struct mutex interface_state_mutex; /* protect SW state */
u8 interface_state;
struct mutex pci_status_mutex; /* sync pci state */
enum mlx4_pci_status pci_status;
};
struct mlx4_dev {