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Message-Id: <20181214215200.31222-10-saeedm@mellanox.com>
Date: Fri, 14 Dec 2018 13:51:56 -0800
From: Saeed Mahameed <saeedm@...lanox.com>
To: "David S. Miller" <davem@...emloft.net>
Cc: netdev@...r.kernel.org, Rabie Loulou <rabiel@...lanox.com>,
Aviv Heller <avivh@...lanox.com>,
Saeed Mahameed <saeedm@...lanox.com>
Subject: [net-next 09/13] net/mlx5: Allow/disallow LAG according to pre-req only
From: Rabie Loulou <rabiel@...lanox.com>
Remove the lag forbid/allow functions, change the lag prereq check to
run in the do-bond logic, so every change in the prereq state will
cause LAG to be disabled/enabled accordingly after the next do-bond run.
Add lag update function, so every component which changes the prereq
state and want the LAG to re-calc the conditions can call the update
function.
Signed-off-by: Rabie Loulou <rabiel@...lanox.com>
Signed-off-by: Aviv Heller <avivh@...lanox.com>
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
---
.../net/ethernet/mellanox/mlx5/core/eswitch.c | 13 ++++
.../net/ethernet/mellanox/mlx5/core/eswitch.h | 4 ++
drivers/net/ethernet/mellanox/mlx5/core/lag.c | 62 +++++--------------
.../ethernet/mellanox/mlx5/core/mlx5_core.h | 4 +-
.../net/ethernet/mellanox/mlx5/core/sriov.c | 14 +----
5 files changed, 36 insertions(+), 61 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
index 4f9dd0d4a081..70d0d9aa6b5d 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
@@ -1632,6 +1632,8 @@ int mlx5_eswitch_enable_sriov(struct mlx5_eswitch *esw, int nvfs, int mode)
esw_info(esw->dev, "E-Switch enable SRIOV: nvfs(%d) mode (%d)\n", nvfs, mode);
esw->mode = mode;
+ mlx5_lag_update(esw->dev);
+
if (mode == SRIOV_LEGACY) {
err = esw_create_legacy_fdb_table(esw);
} else {
@@ -1708,6 +1710,8 @@ void mlx5_eswitch_disable_sriov(struct mlx5_eswitch *esw)
old_mode = esw->mode;
esw->mode = SRIOV_NONE;
+ mlx5_lag_update(esw->dev);
+
if (old_mode == SRIOV_OFFLOADS)
mlx5_reload_interface(esw->dev, MLX5_INTERFACE_PROTOCOL_IB);
}
@@ -2225,3 +2229,12 @@ u8 mlx5_eswitch_mode(struct mlx5_eswitch *esw)
return ESW_ALLOWED(esw) ? esw->mode : SRIOV_NONE;
}
EXPORT_SYMBOL_GPL(mlx5_eswitch_mode);
+
+bool mlx5_esw_lag_prereq(struct mlx5_core_dev *dev0, struct mlx5_core_dev *dev1)
+{
+ if (dev0->priv.eswitch->mode == SRIOV_NONE &&
+ dev1->priv.eswitch->mode == SRIOV_NONE)
+ return true;
+
+ return false;
+}
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
index 701abd794dab..9c89eea9b2c3 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
@@ -351,6 +351,9 @@ static inline bool mlx5_eswitch_vlan_actions_supported(struct mlx5_core_dev *dev
MLX5_CAP_ESW_FLOWTABLE_FDB(dev, push_vlan_2);
}
+bool mlx5_esw_lag_prereq(struct mlx5_core_dev *dev0,
+ struct mlx5_core_dev *dev1);
+
#define MLX5_DEBUG_ESWITCH_MASK BIT(3)
#define esw_info(dev, format, ...) \
@@ -367,6 +370,7 @@ 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 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) {}
+static inline bool mlx5_esw_lag_prereq(struct mlx5_core_dev *dev0, struct mlx5_core_dev *dev1) { return true; }
#define FDB_MAX_CHAIN 1
#define FDB_SLOW_PATH_CHAIN (FDB_MAX_CHAIN + 1)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag.c b/drivers/net/ethernet/mellanox/mlx5/core/lag.c
index 8127d907e1ef..3b1dcd2969d7 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lag.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lag.c
@@ -62,11 +62,6 @@ struct mlx5_lag {
struct lag_tracker tracker;
struct delayed_work bond_work;
struct notifier_block nb;
-
- /* Admin state. Allow lag only if allowed is true
- * even if network conditions for lag were met
- */
- bool allowed;
};
/* General purpose, use for short periods of time.
@@ -254,6 +249,16 @@ static void mlx5_deactivate_lag(struct mlx5_lag *ldev)
err);
}
+static bool mlx5_lag_check_prereq(struct mlx5_lag *ldev)
+{
+ if (ldev->pf[0].dev &&
+ ldev->pf[1].dev &&
+ mlx5_esw_lag_prereq(ldev->pf[0].dev, ldev->pf[1].dev))
+ return true;
+ else
+ return false;
+}
+
static void mlx5_do_bond(struct mlx5_lag *ldev)
{
struct mlx5_core_dev *dev0 = ldev->pf[0].dev;
@@ -271,7 +276,7 @@ static void mlx5_do_bond(struct mlx5_lag *ldev)
tracker = ldev->tracker;
mutex_unlock(&lag_mutex);
- do_bond = tracker.is_bonded && ldev->allowed;
+ do_bond = tracker.is_bonded && mlx5_lag_check_prereq(ldev);
if (do_bond && !mlx5_lag_is_bonded(ldev)) {
if (!sriov_enabled)
@@ -449,15 +454,6 @@ static int mlx5_lag_netdev_event(struct notifier_block *this,
return NOTIFY_DONE;
}
-static bool mlx5_lag_check_prereq(struct mlx5_lag *ldev)
-{
- if ((ldev->pf[0].dev && mlx5_sriov_is_enabled(ldev->pf[0].dev)) ||
- (ldev->pf[1].dev && mlx5_sriov_is_enabled(ldev->pf[1].dev)))
- return false;
- else
- return true;
-}
-
static struct mlx5_lag *mlx5_lag_dev_alloc(void)
{
struct mlx5_lag *ldev;
@@ -467,7 +463,6 @@ static struct mlx5_lag *mlx5_lag_dev_alloc(void)
return NULL;
INIT_DELAYED_WORK(&ldev->bond_work, mlx5_do_bond_work);
- ldev->allowed = mlx5_lag_check_prereq(ldev);
return ldev;
}
@@ -492,7 +487,6 @@ static void mlx5_lag_dev_add_pf(struct mlx5_lag *ldev,
ldev->tracker.netdev_state[fn].link_up = 0;
ldev->tracker.netdev_state[fn].tx_enabled = 0;
- ldev->allowed = mlx5_lag_check_prereq(ldev);
dev->priv.lag = ldev;
mutex_unlock(&lag_mutex);
@@ -514,7 +508,6 @@ static void mlx5_lag_dev_remove_pf(struct mlx5_lag *ldev,
memset(&ldev->pf[i], 0, sizeof(*ldev->pf));
dev->priv.lag = NULL;
- ldev->allowed = mlx5_lag_check_prereq(ldev);
mutex_unlock(&lag_mutex);
}
@@ -593,42 +586,19 @@ bool mlx5_lag_is_active(struct mlx5_core_dev *dev)
}
EXPORT_SYMBOL(mlx5_lag_is_active);
-static int mlx5_lag_set_state(struct mlx5_core_dev *dev, bool allow)
+void mlx5_lag_update(struct mlx5_core_dev *dev)
{
struct mlx5_lag *ldev;
- int ret = 0;
- bool lag_active;
mlx5_dev_list_lock();
-
ldev = mlx5_lag_dev_get(dev);
- if (!ldev) {
- ret = -ENODEV;
- goto unlock;
- }
- lag_active = mlx5_lag_is_bonded(ldev);
- if (!mlx5_lag_check_prereq(ldev) && allow) {
- ret = -EINVAL;
- goto unlock;
- }
- if (ldev->allowed == allow)
+ if (!ldev)
goto unlock;
- ldev->allowed = allow;
- if ((lag_active && !allow) || allow)
- mlx5_do_bond(ldev);
-unlock:
- mlx5_dev_list_unlock();
- return ret;
-}
-int mlx5_lag_forbid(struct mlx5_core_dev *dev)
-{
- return mlx5_lag_set_state(dev, false);
-}
+ mlx5_do_bond(ldev);
-int mlx5_lag_allow(struct mlx5_core_dev *dev)
-{
- return mlx5_lag_set_state(dev, true);
+unlock:
+ mlx5_dev_list_unlock();
}
struct net_device *mlx5_lag_get_roce_netdev(struct mlx5_core_dev *dev)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
index fd3141a4b3f1..73bf46599ec6 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
@@ -185,10 +185,8 @@ static inline int mlx5_lag_is_lacp_owner(struct mlx5_core_dev *dev)
MLX5_CAP_GEN(dev, lag_master);
}
-int mlx5_lag_allow(struct mlx5_core_dev *dev);
-int mlx5_lag_forbid(struct mlx5_core_dev *dev);
-
void mlx5_reload_interface(struct mlx5_core_dev *mdev, int protocol);
+void mlx5_lag_update(struct mlx5_core_dev *dev);
enum {
MLX5_NIC_IFC_FULL = 0,
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/sriov.c b/drivers/net/ethernet/mellanox/mlx5/core/sriov.c
index a0674962f02c..6e178030d8fb 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/sriov.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/sriov.c
@@ -216,20 +216,10 @@ int mlx5_core_sriov_configure(struct pci_dev *pdev, int num_vfs)
if (!mlx5_core_is_pf(dev))
return -EPERM;
- if (num_vfs) {
- int ret;
-
- ret = mlx5_lag_forbid(dev);
- if (ret && (ret != -ENODEV))
- return ret;
- }
-
- if (num_vfs) {
+ if (num_vfs)
err = mlx5_sriov_enable(pdev, num_vfs);
- } else {
+ else
mlx5_sriov_disable(pdev);
- mlx5_lag_allow(dev);
- }
return err ? err : num_vfs;
}
--
2.19.2
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