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RDMA/mlx5: Enable vport loopback when user context or QP mandate

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A user can create a QP which can accept loopback traffic, but that's not
enough. We need to enable loopback on the vport as well. Currently vport
loopback is enabled only when more than 1 users are using the IB device,
update the logic to consider whatever a QP which supports loopback was
created, if so enable vport loopback even if there is only a single user.

Signed-off-by: Mark Bloch <markb@mellanox.com>
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Mark Bloch
2018-09-17 13:30:49 +03:00
committed by Doug Ledford
parent 175edba856
commit 0042f9e458
3 changed files with 57 additions and 17 deletions
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36
drivers/infiniband/hw/mlx5/main.c
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@@ -1571,28 +1571,44 @@ static void deallocate_uars(struct mlx5_ib_dev *dev,
mlx5_cmd_free_uar(dev->mdev, bfregi->sys_pages[i]);
}
static int mlx5_ib_enable_lb(struct mlx5_ib_dev *dev)
int mlx5_ib_enable_lb(struct mlx5_ib_dev *dev, bool td, bool qp)
{
int err = 0;
mutex_lock(&dev->lb.mutex);
dev->lb.user_td++;
if (td)
dev->lb.user_td++;
if (qp)
dev->lb.qps++;
if (dev->lb.user_td == 2)
err = mlx5_nic_vport_update_local_lb(dev->mdev, true);
if (dev->lb.user_td == 2 ||
dev->lb.qps == 1) {
if (!dev->lb.enabled) {
err = mlx5_nic_vport_update_local_lb(dev->mdev, true);
dev->lb.enabled = true;
}
}
mutex_unlock(&dev->lb.mutex);
return err;
}
static void mlx5_ib_disable_lb(struct mlx5_ib_dev *dev)
void mlx5_ib_disable_lb(struct mlx5_ib_dev *dev, bool td, bool qp)
{
mutex_lock(&dev->lb.mutex);
dev->lb.user_td--;
if (td)
dev->lb.user_td--;
if (qp)
dev->lb.qps--;
if (dev->lb.user_td < 2)
mlx5_nic_vport_update_local_lb(dev->mdev, false);
if (dev->lb.user_td == 1 &&
dev->lb.qps == 0) {
if (dev->lb.enabled) {
mlx5_nic_vport_update_local_lb(dev->mdev, false);
dev->lb.enabled = false;
}
}
mutex_unlock(&dev->lb.mutex);
}
@@ -1613,7 +1629,7 @@ static int mlx5_ib_alloc_transport_domain(struct mlx5_ib_dev *dev, u32 *tdn)
!MLX5_CAP_GEN(dev->mdev, disable_local_lb_mc)))
return err;
return mlx5_ib_enable_lb(dev);
return mlx5_ib_enable_lb(dev, true, false);
}
static void mlx5_ib_dealloc_transport_domain(struct mlx5_ib_dev *dev, u32 tdn)
@@ -1628,7 +1644,7 @@ static void mlx5_ib_dealloc_transport_domain(struct mlx5_ib_dev *dev, u32 tdn)
!MLX5_CAP_GEN(dev->mdev, disable_local_lb_mc)))
return;
mlx5_ib_disable_lb(dev);
mlx5_ib_disable_lb(dev, true, false);
}
static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev,