The mlx5 VF driver doesn't set QP tx port affinity because it doesn't know
if the lag is active or not, since the "lag_active" works only for PF
interfaces. In this case for VF interfaces only one lag is used which
brings performance issue.
Add a lag_tx_port_affinity CAP bit; When it is enabled and
"num_lag_ports > 1", then driver always set QP tx affinity, regardless
of lag state.
Link: https://lore.kernel.org/r/20200527055014.355093-1-leon@kernel.org
Signed-off-by: Mark Zhang <markz@mellanox.com>
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
context->lib_caps = req.lib_caps;
print_lib_caps(dev, context->lib_caps);
- if (dev->lag_active) {
+ if (mlx5_ib_lag_should_assign_affinity(dev)) {
u8 port = mlx5_core_native_port_num(dev->mdev) - 1;
atomic_set(&context->tx_port_affinity,
int mlx5_ib_enable_driver(struct ib_device *dev);
int mlx5_ib_test_wc(struct mlx5_ib_dev *dev);
+
+static inline bool mlx5_ib_lag_should_assign_affinity(struct mlx5_ib_dev *dev)
+{
+ return dev->lag_active ||
+ (MLX5_CAP_GEN(dev->mdev, num_lag_ports) > 1 &&
+ MLX5_CAP_GEN(dev->mdev, lag_tx_port_affinity));
+}
#endif /* MLX5_IB_H */
struct mlx5_ib_qp_base *qp_base;
unsigned int tx_affinity;
- if (!(dev->lag_active && qp_supports_affinity(qp)))
+ if (!(mlx5_ib_lag_should_assign_affinity(dev) &&
+ qp_supports_affinity(qp)))
return 0;
if (mqp->flags & MLX5_IB_QP_CREATE_SQPN_QP1)