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IB/mlx4: Support RAW Ethernet when RoCE is disabled 

On some environments, such as certain SR-IOV VF configurations, RoCE
isn't supported for mlx4 Ethernet ports. Currently the driver will
not open IB device on that port.

This is problematic since we do want user-space RAW Ethernet QPs functionality
to remain in place. For that end, enhance the relevant driver flows such that we
do create a device instance in that case.

Signed-off-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Majd Dibbiny 2017-03-19 11:01:28 +02:00 committed by Doug Ledford
parent b312be3d87
commit dd77abf8a0
2 changed files with 12 additions and 17 deletions
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26
drivers/infiniband/hw/mlx4/main.c
View File

@ -2867,23 +2867,19 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
if (mlx4_ib_init_sriov(ibdev))
goto err_mad;
if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE ||
dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) {
if (!iboe->nb.notifier_call) {
iboe->nb.notifier_call = mlx4_ib_netdev_event;
err = register_netdevice_notifier(&iboe->nb);
if (err) {
iboe->nb.notifier_call = NULL;
goto err_notif;
}
}
if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) {
err = mlx4_config_roce_v2_port(dev, ROCE_V2_UDP_DPORT);
if (err) {
goto err_notif;
}
if (!iboe->nb.notifier_call) {
iboe->nb.notifier_call = mlx4_ib_netdev_event;
err = register_netdevice_notifier(&iboe->nb);
if (err) {
iboe->nb.notifier_call = NULL;
goto err_notif;
}
}
if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) {
err = mlx4_config_roce_v2_port(dev, ROCE_V2_UDP_DPORT);
if (err)
goto err_notif;
}
for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) {
if (device_create_file(&ibdev->ib_dev.dev,

3
include/linux/mlx4/device.h
View File

@ -1011,8 +1011,7 @@ struct mlx4_mad_ifc {
#define mlx4_foreach_ib_transport_port(port, dev) \
for ((port) = 1; (port) <= (dev)->caps.num_ports; (port)++) \
if (((dev)->caps.port_mask[port] == MLX4_PORT_TYPE_IB) || \
((dev)->caps.flags & MLX4_DEV_CAP_FLAG_IBOE) || \
((dev)->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2))
((dev)->caps.port_mask[port] == MLX4_PORT_TYPE_ETH))
#define MLX4_INVALID_SLAVE_ID 0xFF
#define MLX4_SINK_COUNTER_INDEX(dev) (dev->caps.max_counters - 1)