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Date: Tue, 20 Nov 2018 14:12:22 -0800
From: Saeed Mahameed <saeedm@...lanox.com>
To: Leon Romanovsky <leonro@...lanox.com>, saeedm@...lanox.com
Cc: netdev@...r.kernel.org, linux-rdma@...r.kernel.org,
Jason Gunthorpe <jgg@...lanox.com>
Subject: [PATCH mlx5-next 05/11] net/mlx5: E-Switch, Use async events chain
Remove the explicit call to mlx5_eswitch_vport_event on
MLX5_EVENT_TYPE_NIC_VPORT_CHANGE and let the eswitch register its own
handler when its ready.
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
---
drivers/net/ethernet/mellanox/mlx5/core/eq.c | 4 --
.../net/ethernet/mellanox/mlx5/core/eswitch.c | 44 +++++++++++--------
.../net/ethernet/mellanox/mlx5/core/eswitch.h | 3 +-
3 files changed, 26 insertions(+), 25 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eq.c b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
index e5fcce9ca107..7c8b2d89645b 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eq.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
@@ -409,10 +409,6 @@ static irqreturn_t mlx5_eq_async_int(int irq, void *eq_ptr)
}
break;
- case MLX5_EVENT_TYPE_NIC_VPORT_CHANGE:
- mlx5_eswitch_vport_event(dev->priv.eswitch, eqe);
- break;
-
case MLX5_EVENT_TYPE_PORT_MODULE_EVENT:
mlx5_port_module_event(dev, eqe);
break;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
index 2346b6ba3d54..e6a9b19d8626 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
@@ -36,6 +36,7 @@
#include <linux/mlx5/vport.h>
#include <linux/mlx5/fs.h>
#include "mlx5_core.h"
+#include "lib/eq.h"
#include "eswitch.h"
#include "fs_core.h"
#include "lib/eq.h"
@@ -1568,7 +1569,6 @@ static void esw_disable_vport(struct mlx5_eswitch *esw, int vport_num)
/* Mark this vport as disabled to discard new events */
vport->enabled = false;
- mlx5_eq_synchronize_async_irq(esw->dev);
/* Wait for current already scheduled events to complete */
flush_workqueue(esw->work_queue);
/* Disable events from this vport */
@@ -1594,10 +1594,25 @@ static void esw_disable_vport(struct mlx5_eswitch *esw, int vport_num)
mutex_unlock(&esw->state_lock);
}
+static int eswitch_vport_event(struct notifier_block *nb,
+ unsigned long type, void *data)
+{
+ struct mlx5_eswitch *esw = mlx5_nb_cof(nb, struct mlx5_eswitch, nb);
+ struct mlx5_eqe *eqe = data;
+ struct mlx5_vport *vport;
+ u16 vport_num;
+
+ vport_num = be16_to_cpu(eqe->data.vport_change.vport_num);
+ vport = &esw->vports[vport_num];
+ if (vport->enabled)
+ queue_work(esw->work_queue, &vport->vport_change_handler);
+
+ return NOTIFY_OK;
+}
+
/* Public E-Switch API */
#define ESW_ALLOWED(esw) ((esw) && MLX5_ESWITCH_MANAGER((esw)->dev))
-
int mlx5_eswitch_enable_sriov(struct mlx5_eswitch *esw, int nvfs, int mode)
{
int err;
@@ -1641,6 +1656,11 @@ int mlx5_eswitch_enable_sriov(struct mlx5_eswitch *esw, int nvfs, int mode)
for (i = 0; i <= nvfs; i++)
esw_enable_vport(esw, i, enabled_events);
+ if (mode == SRIOV_LEGACY) {
+ MLX5_NB_INIT(&esw->nb, eswitch_vport_event, NIC_VPORT_CHANGE);
+ mlx5_eq_notifier_register(esw->dev, &esw->nb);
+ }
+
esw_info(esw->dev, "SRIOV enabled: active vports(%d)\n",
esw->enabled_vports);
return 0;
@@ -1670,6 +1690,9 @@ void mlx5_eswitch_disable_sriov(struct mlx5_eswitch *esw)
mc_promisc = &esw->mc_promisc;
nvports = esw->enabled_vports;
+ if (esw->mode == SRIOV_LEGACY)
+ mlx5_eq_notifier_unregister(esw->dev, &esw->nb);
+
for (i = 0; i < esw->total_vports; i++)
esw_disable_vport(esw, i);
@@ -1778,23 +1801,6 @@ void mlx5_eswitch_cleanup(struct mlx5_eswitch *esw)
kfree(esw);
}
-void mlx5_eswitch_vport_event(struct mlx5_eswitch *esw, struct mlx5_eqe *eqe)
-{
- struct mlx5_eqe_vport_change *vc_eqe = &eqe->data.vport_change;
- u16 vport_num = be16_to_cpu(vc_eqe->vport_num);
- struct mlx5_vport *vport;
-
- if (!esw) {
- pr_warn("MLX5 E-Switch: vport %d got an event while eswitch is not initialized\n",
- vport_num);
- return;
- }
-
- vport = &esw->vports[vport_num];
- if (vport->enabled)
- queue_work(esw->work_queue, &vport->vport_change_handler);
-}
-
/* Vport Administration */
#define LEGAL_VPORT(esw, vport) (vport >= 0 && vport < esw->total_vports)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
index aaafc9f17115..480ffa294867 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
@@ -181,6 +181,7 @@ struct esw_mc_addr { /* SRIOV only */
struct mlx5_eswitch {
struct mlx5_core_dev *dev;
+ struct mlx5_nb nb;
struct mlx5_eswitch_fdb fdb_table;
struct hlist_head mc_table[MLX5_L2_ADDR_HASH_SIZE];
struct workqueue_struct *work_queue;
@@ -211,7 +212,6 @@ int esw_offloads_init_reps(struct mlx5_eswitch *esw);
/* E-Switch API */
int mlx5_eswitch_init(struct mlx5_core_dev *dev);
void mlx5_eswitch_cleanup(struct mlx5_eswitch *esw);
-void mlx5_eswitch_vport_event(struct mlx5_eswitch *esw, struct mlx5_eqe *eqe);
int mlx5_eswitch_enable_sriov(struct mlx5_eswitch *esw, int nvfs, int mode);
void mlx5_eswitch_disable_sriov(struct mlx5_eswitch *esw);
int mlx5_eswitch_set_vport_mac(struct mlx5_eswitch *esw,
@@ -352,7 +352,6 @@ static inline bool mlx5_eswitch_vlan_actions_supported(struct mlx5_core_dev *dev
/* eswitch API stubs */
static inline int mlx5_eswitch_init(struct mlx5_core_dev *dev) { return 0; }
static inline void mlx5_eswitch_cleanup(struct mlx5_eswitch *esw) {}
-static inline void mlx5_eswitch_vport_event(struct mlx5_eswitch *esw, struct mlx5_eqe *eqe) {}
static inline int mlx5_eswitch_enable_sriov(struct mlx5_eswitch *esw, int nvfs, int mode) { return 0; }
static inline void mlx5_eswitch_disable_sriov(struct mlx5_eswitch *esw) {}
--
2.19.1
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