net/mlx5: Generalize IRQ interface to work with irq_table

IRQ interface should operate within the irq_table context.
It should be independent of any EQ data structure.

The interface that will be exposed:
init/clenup, create/destroy, attach/detach

Signed-off-by: Yuval Avnery <yuvalav@mellanox.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eq.c b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
index daf9bc3..80a436b 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/eq.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
@@ -143,16 +143,22 @@ static struct mlx5_irq_info *mlx5_irq_get(struct mlx5_core_dev *dev, int vecidx)
        return &irq_table->irq_info[vecidx];
 }
 
-static int mlx5_irq_attach_nb(struct mlx5_irq_info *irq,
+static int mlx5_irq_attach_nb(struct mlx5_irq_table *irq_table, int vecidx,
                              struct notifier_block *nb)
 {
-       return atomic_notifier_chain_register(&irq->nh, nb);
+       struct mlx5_irq_info *irq_info;
+
+       irq_info = &irq_table->irq_info[vecidx];
+       return atomic_notifier_chain_register(&irq_info->nh, nb);
 }
 
-static int mlx5_irq_detach_nb(struct mlx5_irq_info *irq,
+static int mlx5_irq_detach_nb(struct mlx5_irq_table *irq_table, int vecidx,
                              struct notifier_block *nb)
 {
-       return atomic_notifier_chain_unregister(&irq->nh, nb);
+       struct mlx5_irq_info *irq_info;
+
+       irq_info = &irq_table->irq_info[vecidx];
+       return atomic_notifier_chain_unregister(&irq_info->nh, nb);
 }
 
 static irqreturn_t mlx5_irq_int_handler(int irq, void *nh)
@@ -465,7 +471,8 @@ create_map_eq(struct mlx5_core_dev *dev, struct mlx5_eq *eq,
        eq->doorbell = priv->uar->map + MLX5_EQ_DOORBEL_OFFSET;
        eq->irq_nb = param->nb;
 
-       err = mlx5_irq_attach_nb(mlx5_irq_get(dev, vecidx), param->nb);
+       err = mlx5_irq_attach_nb(dev->priv.eq_table->irq_table, vecidx,
+                                param->nb);
        if (err)
                goto err_eq;
 
@@ -481,7 +488,7 @@ create_map_eq(struct mlx5_core_dev *dev, struct mlx5_eq *eq,
        return 0;
 
 err_detach:
-       mlx5_irq_detach_nb(mlx5_irq_get(dev, vecidx), eq->irq_nb);
+       mlx5_irq_detach_nb(dev->priv.eq_table->irq_table, vecidx, eq->irq_nb);
 
 err_eq:
        mlx5_cmd_destroy_eq(dev, eq->eqn);
@@ -500,7 +507,8 @@ static int destroy_unmap_eq(struct mlx5_core_dev *dev, struct mlx5_eq *eq)
 
        mlx5_debug_eq_remove(dev, eq);
 
-       err = mlx5_irq_detach_nb(mlx5_irq_get(dev, eq->vecidx), eq->irq_nb);
+       err = mlx5_irq_detach_nb(dev->priv.eq_table->irq_table,
+                                eq->vecidx, eq->irq_nb);
        if (err)
                mlx5_core_warn(eq->dev, "eq failed to detach from irq. err %d",
                               err);
@@ -1023,19 +1031,31 @@ unsigned int mlx5_comp_vectors_count(struct mlx5_core_dev *dev)
 }
 EXPORT_SYMBOL(mlx5_comp_vectors_count);
 
+static struct cpumask *
+mlx5_irq_get_affinity_mask(struct mlx5_irq_table *irq_table, int vecidx)
+{
+       return irq_table->irq_info[vecidx].mask;
+}
+
 struct cpumask *
 mlx5_comp_irq_get_affinity_mask(struct mlx5_core_dev *dev, int vector)
 {
        int vecidx = vector + MLX5_EQ_VEC_COMP_BASE;
 
-       return dev->priv.eq_table->irq_table->irq_info[vecidx].mask;
+       return mlx5_irq_get_affinity_mask(dev->priv.eq_table->irq_table,
+                                         vecidx);
 }
 EXPORT_SYMBOL(mlx5_comp_irq_get_affinity_mask);
 
 #ifdef CONFIG_RFS_ACCEL
+static struct cpu_rmap *mlx5_irq_get_rmap(struct mlx5_irq_table *irq_table)
+{
+       return irq_table->rmap;
+}
+
 struct cpu_rmap *mlx5_eq_table_get_rmap(struct mlx5_core_dev *dev)
 {
-       return dev->priv.eq_table->irq_table->rmap;
+       return mlx5_irq_get_rmap(dev->priv.eq_table->irq_table);
 }
 #endif