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Date: Mon, 10 Jun 2019 23:38:27 +0000
From: Saeed Mahameed <saeedm@...lanox.com>
To: Saeed Mahameed <saeedm@...lanox.com>,
Leon Romanovsky <leonro@...lanox.com>
CC: "linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
Yuval Avnery <yuvalav@...lanox.com>,
Parav Pandit <parav@...lanox.com>
Subject: [PATCH mlx5-next 08/16] net/mlx5: Separate IRQ data from EQ table
data
From: Yuval Avnery <yuvalav@...lanox.com>
IRQ table should only exist for mlx5_core_dev for PF and VF only.
EQ table of mediated devices should hold a pointer to the IRQ table
of the parent PCI device.
Signed-off-by: Yuval Avnery <yuvalav@...lanox.com>
Reviewed-by: Parav Pandit <parav@...lanox.com>
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
---
drivers/net/ethernet/mellanox/mlx5/core/eq.c | 125 ++++++++++++------
.../net/ethernet/mellanox/mlx5/core/main.c | 11 +-
.../ethernet/mellanox/mlx5/core/mlx5_core.h | 3 +
include/linux/mlx5/driver.h | 3 +
4 files changed, 98 insertions(+), 44 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eq.c b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
index f187169cbe76..cdfa35ec02fa 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eq.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
@@ -77,6 +77,14 @@ struct mlx5_irq_info {
char name[MLX5_MAX_IRQ_NAME];
};
+struct mlx5_irq_table {
+ struct mlx5_irq_info *irq_info;
+ int nvec;
+#ifdef CONFIG_RFS_ACCEL
+ struct cpu_rmap *rmap;
+#endif
+};
+
struct mlx5_eq_table {
struct list_head comp_eqs_list;
struct mlx5_eq_async pages_eq;
@@ -89,11 +97,8 @@ struct mlx5_eq_table {
struct mlx5_nb cq_err_nb;
struct mutex lock; /* sync async eqs creations */
- int num_comp_vectors;
- struct mlx5_irq_info *irq_info;
-#ifdef CONFIG_RFS_ACCEL
- struct cpu_rmap *rmap;
-#endif
+ int num_comp_eqs;
+ struct mlx5_irq_table *irq_table;
};
#define MLX5_ASYNC_EVENT_MASK ((1ull << MLX5_EVENT_TYPE_PATH_MIG) | \
@@ -109,11 +114,33 @@ struct mlx5_eq_table {
(1ull << MLX5_EVENT_TYPE_SRQ_LAST_WQE) | \
(1ull << MLX5_EVENT_TYPE_SRQ_RQ_LIMIT))
+int mlx5_irq_table_init(struct mlx5_core_dev *dev)
+{
+ struct mlx5_irq_table *irq_table;
+
+ irq_table = kvzalloc(sizeof(*irq_table), GFP_KERNEL);
+ if (!irq_table)
+ return -ENOMEM;
+
+ dev->priv.irq_table = irq_table;
+ return 0;
+}
+
+void mlx5_irq_table_cleanup(struct mlx5_core_dev *dev)
+{
+ kvfree(dev->priv.irq_table);
+}
+
+static int mlx5_irq_get_num_comp(struct mlx5_irq_table *table)
+{
+ return table->nvec - MLX5_EQ_VEC_COMP_BASE;
+}
+
static struct mlx5_irq_info *mlx5_irq_get(struct mlx5_core_dev *dev, int vecidx)
{
- struct mlx5_eq_table *eq_table = dev->priv.eq_table;
+ struct mlx5_irq_table *irq_table = dev->priv.irq_table;
- return &eq_table->irq_info[vecidx];
+ return &irq_table->irq_info[vecidx];
}
static int mlx5_irq_attach_nb(struct mlx5_irq_info *irq,
@@ -158,15 +185,12 @@ static void irq_set_name(char *name, int vecidx)
static int request_irqs(struct mlx5_core_dev *dev, int nvec)
{
- struct mlx5_priv *priv = &dev->priv;
- struct mlx5_eq_table *eq_table;
char name[MLX5_MAX_IRQ_NAME];
int err;
int i;
- eq_table = priv->eq_table;
for (i = 0; i < nvec; i++) {
- struct mlx5_irq_info *irq_info = &eq_table->irq_info[i];
+ struct mlx5_irq_info *irq_info = mlx5_irq_get(dev, i);
int irqn = pci_irq_vector(dev->pdev, i);
irq_set_name(name, i);
@@ -184,7 +208,7 @@ static int request_irqs(struct mlx5_core_dev *dev, int nvec)
err_request_irq:
for (; i >= 0; i--) {
- struct mlx5_irq_info *irq_info = &eq_table->irq_info[i];
+ struct mlx5_irq_info *irq_info = mlx5_irq_get(dev, i);
int irqn = pci_irq_vector(dev->pdev, i);
free_irq(irqn, &irq_info->nh);
@@ -501,6 +525,7 @@ int mlx5_eq_table_init(struct mlx5_core_dev *dev)
for (i = 0; i < MLX5_EVENT_TYPE_MAX; i++)
ATOMIC_INIT_NOTIFIER_HEAD(&eq_table->nh[i]);
+ eq_table->irq_table = dev->priv.irq_table;
return 0;
kvfree_eq_table:
@@ -796,10 +821,13 @@ EXPORT_SYMBOL(mlx5_eq_update_ci);
static int set_comp_irq_affinity_hint(struct mlx5_core_dev *mdev, int i)
{
- struct mlx5_priv *priv = &mdev->priv;
int vecidx = MLX5_EQ_VEC_COMP_BASE + i;
- int irq = pci_irq_vector(mdev->pdev, vecidx);
- struct mlx5_irq_info *irq_info = &priv->eq_table->irq_info[vecidx];
+ struct mlx5_priv *priv = &mdev->priv;
+ struct mlx5_irq_info *irq_info;
+ int irq;
+
+ irq_info = mlx5_irq_get(mdev, vecidx);
+ irq = pci_irq_vector(mdev->pdev, vecidx);
if (!zalloc_cpumask_var(&irq_info->mask, GFP_KERNEL)) {
mlx5_core_warn(mdev, "zalloc_cpumask_var failed");
@@ -819,20 +847,22 @@ static int set_comp_irq_affinity_hint(struct mlx5_core_dev *mdev, int i)
static void clear_comp_irq_affinity_hint(struct mlx5_core_dev *mdev, int i)
{
int vecidx = MLX5_EQ_VEC_COMP_BASE + i;
- struct mlx5_priv *priv = &mdev->priv;
- int irq = pci_irq_vector(mdev->pdev, vecidx);
- struct mlx5_irq_info *irq_info = &priv->eq_table->irq_info[vecidx];
+ struct mlx5_irq_info *irq_info;
+ int irq;
+ irq_info = mlx5_irq_get(mdev, vecidx);
+ irq = pci_irq_vector(mdev->pdev, vecidx);
irq_set_affinity_hint(irq, NULL);
free_cpumask_var(irq_info->mask);
}
static int set_comp_irq_affinity_hints(struct mlx5_core_dev *mdev)
{
+ int nvec = mlx5_irq_get_num_comp(mdev->priv.irq_table);
int err;
int i;
- for (i = 0; i < mdev->priv.eq_table->num_comp_vectors; i++) {
+ for (i = 0; i < nvec; i++) {
err = set_comp_irq_affinity_hint(mdev, i);
if (err)
goto err_out;
@@ -849,9 +879,10 @@ static int set_comp_irq_affinity_hints(struct mlx5_core_dev *mdev)
static void clear_comp_irqs_affinity_hints(struct mlx5_core_dev *mdev)
{
+ int nvec = mlx5_irq_get_num_comp(mdev->priv.irq_table);
int i;
- for (i = 0; i < mdev->priv.eq_table->num_comp_vectors; i++)
+ for (i = 0; i < nvec; i++)
clear_comp_irq_affinity_hint(mdev, i);
}
@@ -863,9 +894,9 @@ static void destroy_comp_eqs(struct mlx5_core_dev *dev)
clear_comp_irqs_affinity_hints(dev);
#ifdef CONFIG_RFS_ACCEL
- if (table->rmap) {
- free_irq_cpu_rmap(table->rmap);
- table->rmap = NULL;
+ if (table->irq_table->rmap) {
+ free_irq_cpu_rmap(table->irq_table->rmap);
+ table->irq_table->rmap = NULL;
}
#endif
list_for_each_entry_safe(eq, n, &table->comp_eqs_list, list) {
@@ -882,20 +913,20 @@ static int create_comp_eqs(struct mlx5_core_dev *dev)
{
struct mlx5_eq_table *table = dev->priv.eq_table;
struct mlx5_eq_comp *eq;
- int ncomp_vec;
+ int ncomp_eqs;
int nent;
int err;
int i;
INIT_LIST_HEAD(&table->comp_eqs_list);
- ncomp_vec = table->num_comp_vectors;
+ ncomp_eqs = table->num_comp_eqs;
nent = MLX5_COMP_EQ_SIZE;
#ifdef CONFIG_RFS_ACCEL
- table->rmap = alloc_irq_cpu_rmap(ncomp_vec);
- if (!table->rmap)
+ table->irq_table->rmap = alloc_irq_cpu_rmap(ncomp_eqs);
+ if (!table->irq_table->rmap)
return -ENOMEM;
#endif
- for (i = 0; i < ncomp_vec; i++) {
+ for (i = 0; i < ncomp_eqs; i++) {
int vecidx = i + MLX5_EQ_VEC_COMP_BASE;
struct mlx5_eq_param param = {};
@@ -912,7 +943,8 @@ static int create_comp_eqs(struct mlx5_core_dev *dev)
(unsigned long)&eq->tasklet_ctx);
#ifdef CONFIG_RFS_ACCEL
- irq_cpu_rmap_add(table->rmap, pci_irq_vector(dev->pdev, vecidx));
+ irq_cpu_rmap_add(table->irq_table->rmap,
+ pci_irq_vector(dev->pdev, vecidx));
#endif
eq->irq_nb.notifier_call = mlx5_eq_comp_int;
param = (struct mlx5_eq_param) {
@@ -967,22 +999,23 @@ EXPORT_SYMBOL(mlx5_vector2eqn);
unsigned int mlx5_comp_vectors_count(struct mlx5_core_dev *dev)
{
- return dev->priv.eq_table->num_comp_vectors;
+ return dev->priv.eq_table->num_comp_eqs;
}
EXPORT_SYMBOL(mlx5_comp_vectors_count);
struct cpumask *
mlx5_comp_irq_get_affinity_mask(struct mlx5_core_dev *dev, int vector)
{
- /* TODO: consider irq_get_affinity_mask(irq) */
- return dev->priv.eq_table->irq_info[vector + MLX5_EQ_VEC_COMP_BASE].mask;
+ int vecidx = vector + MLX5_EQ_VEC_COMP_BASE;
+
+ return dev->priv.eq_table->irq_table->irq_info[vecidx].mask;
}
EXPORT_SYMBOL(mlx5_comp_irq_get_affinity_mask);
#ifdef CONFIG_RFS_ACCEL
struct cpu_rmap *mlx5_eq_table_get_rmap(struct mlx5_core_dev *dev)
{
- return dev->priv.eq_table->rmap;
+ return dev->priv.eq_table->irq_table->rmap;
}
#endif
@@ -1008,16 +1041,17 @@ void mlx5_core_eq_free_irqs(struct mlx5_core_dev *dev)
clear_comp_irqs_affinity_hints(dev);
#ifdef CONFIG_RFS_ACCEL
- if (table->rmap) {
- free_irq_cpu_rmap(table->rmap);
- table->rmap = NULL;
+ if (table->irq_table->rmap) {
+ free_irq_cpu_rmap(table->irq_table->rmap);
+ table->irq_table->rmap = NULL;
}
#endif
mutex_lock(&table->lock); /* sync with create/destroy_async_eq */
- max_eqs = table->num_comp_vectors + MLX5_EQ_VEC_COMP_BASE;
+ max_eqs = table->num_comp_eqs + MLX5_EQ_VEC_COMP_BASE;
for (i = max_eqs - 1; i >= 0; i--) {
- free_irq(pci_irq_vector(dev->pdev, i), &table->irq_info[i].nh);
+ free_irq(pci_irq_vector(dev->pdev, i),
+ &mlx5_irq_get(dev, i)->nh);
}
mutex_unlock(&table->lock);
pci_free_irq_vectors(dev->pdev);
@@ -1026,7 +1060,7 @@ void mlx5_core_eq_free_irqs(struct mlx5_core_dev *dev)
static int alloc_irq_vectors(struct mlx5_core_dev *dev)
{
struct mlx5_priv *priv = &dev->priv;
- struct mlx5_eq_table *table = priv->eq_table;
+ struct mlx5_irq_table *table = priv->irq_table;
int num_eqs = MLX5_CAP_GEN(dev, max_num_eqs) ?
MLX5_CAP_GEN(dev, max_num_eqs) :
1 << MLX5_CAP_GEN(dev, log_max_eq);
@@ -1050,7 +1084,7 @@ static int alloc_irq_vectors(struct mlx5_core_dev *dev)
goto err_free_irq_info;
}
- table->num_comp_vectors = nvec - MLX5_EQ_VEC_COMP_BASE;
+ table->nvec = nvec;
err = request_irqs(dev, nvec);
if (err)
@@ -1067,17 +1101,19 @@ static int alloc_irq_vectors(struct mlx5_core_dev *dev)
static void free_irq_vectors(struct mlx5_core_dev *dev)
{
- struct mlx5_eq_table *table = dev->priv.eq_table;
+ struct mlx5_irq_table *table = dev->priv.irq_table;
int i;
- for (i = 0; i < table->num_comp_vectors + MLX5_EQ_VEC_COMP_BASE; i++)
- free_irq(pci_irq_vector(dev->pdev, i), &table->irq_info[i].nh);
+ for (i = 0; i < table->nvec; i++)
+ free_irq(pci_irq_vector(dev->pdev, i),
+ &mlx5_irq_get(dev, i)->nh);
pci_free_irq_vectors(dev->pdev);
kfree(table->irq_info);
}
int mlx5_eq_table_create(struct mlx5_core_dev *dev)
{
+ struct mlx5_eq_table *eq_table = dev->priv.eq_table;
int err;
err = alloc_irq_vectors(dev);
@@ -1086,6 +1122,9 @@ int mlx5_eq_table_create(struct mlx5_core_dev *dev)
return err;
}
+ eq_table->num_comp_eqs =
+ mlx5_irq_get_num_comp(eq_table->irq_table);
+
err = create_async_eqs(dev);
if (err) {
mlx5_core_err(dev, "Failed to create async EQs\n");
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
index 720f65bfe6a9..be79dceea3c3 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
@@ -804,10 +804,16 @@ static int mlx5_init_once(struct mlx5_core_dev *dev)
goto err_devcom;
}
+ err = mlx5_irq_table_init(dev);
+ if (err) {
+ mlx5_core_err(dev, "failed to initialize irq table\n");
+ goto err_devcom;
+ }
+
err = mlx5_eq_table_init(dev);
if (err) {
mlx5_core_err(dev, "failed to initialize eq\n");
- goto err_devcom;
+ goto err_irq_cleanup;
}
err = mlx5_events_init(dev);
@@ -883,6 +889,8 @@ static int mlx5_init_once(struct mlx5_core_dev *dev)
mlx5_events_cleanup(dev);
err_eq_cleanup:
mlx5_eq_table_cleanup(dev);
+err_irq_cleanup:
+ mlx5_irq_table_cleanup(dev);
err_devcom:
mlx5_devcom_unregister_device(dev->priv.devcom);
@@ -905,6 +913,7 @@ static void mlx5_cleanup_once(struct mlx5_core_dev *dev)
mlx5_cq_debugfs_cleanup(dev);
mlx5_events_cleanup(dev);
mlx5_eq_table_cleanup(dev);
+ mlx5_irq_table_cleanup(dev);
mlx5_devcom_unregister_device(dev->priv.devcom);
}
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
index 22e69d4813e4..907515f3bfbb 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
@@ -153,6 +153,9 @@ int mlx5_query_qcam_reg(struct mlx5_core_dev *mdev, u32 *qcam,
void mlx5_lag_add(struct mlx5_core_dev *dev, struct net_device *netdev);
void mlx5_lag_remove(struct mlx5_core_dev *dev);
+int mlx5_irq_table_init(struct mlx5_core_dev *dev);
+void mlx5_irq_table_cleanup(struct mlx5_core_dev *dev);
+
int mlx5_events_init(struct mlx5_core_dev *dev);
void mlx5_events_cleanup(struct mlx5_core_dev *dev);
void mlx5_events_start(struct mlx5_core_dev *dev);
diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h
index 64155fe201ee..d8ab633406c2 100644
--- a/include/linux/mlx5/driver.h
+++ b/include/linux/mlx5/driver.h
@@ -492,6 +492,7 @@ struct mlx5_eswitch;
struct mlx5_lag;
struct mlx5_devcom;
struct mlx5_eq_table;
+struct mlx5_irq_table;
struct mlx5_rate_limit {
u32 rate;
@@ -521,6 +522,8 @@ struct mlx5_core_roce {
};
struct mlx5_priv {
+ /* IRQ table valid only for real pci devices PF or VF */
+ struct mlx5_irq_table *irq_table;
struct mlx5_eq_table *eq_table;
/* pages stuff */
--
2.21.0
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