netdev - [net-next 13/15] net/mlx5: E-Switch, Use getter to access all vport array

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Message-ID: <20190430203926.19284-14-saeedm@mellanox.com>
Date:   Tue, 30 Apr 2019 20:40:09 +0000
From:   Saeed Mahameed <saeedm@...lanox.com>
To:     "David S. Miller" <davem@...emloft.net>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Bodong Wang <bodong@...lanox.com>,
        Vu Pham <vuhuong@...lanox.com>,
        Parav Pandit <parav@...lanox.com>,
        Saeed Mahameed <saeedm@...lanox.com>
Subject: [net-next 13/15] net/mlx5: E-Switch, Use getter to access all vport
 array

From: Bodong Wang <bodong@...lanox.com>

Some functions issue vport commands and access vport array using
vport_index/vport_num interchangeably which is OK for VFs vports.
However, this creates potential bug if those vports are not VFs
(E.g, uplink, sf) where their vport_index don't equal to vport_num.

Prepare code to access mlx5_vport structure using a getter function.

Signed-off-by: Bodong Wang <bodong@...lanox.com>
Signed-off-by: Vu Pham <vuhuong@...lanox.com>
Reviewed-by: Parav Pandit <parav@...lanox.com>
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
---
 .../net/ethernet/mellanox/mlx5/core/eswitch.c  | 18 +++++++++---------
 .../net/ethernet/mellanox/mlx5/core/eswitch.h  |  2 ++
 2 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
index 41afc7bf8bd8..0107ce8bf659 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
@@ -72,8 +72,8 @@ static void esw_cleanup_vepa_rules(struct mlx5_eswitch *esw);
 			    MC_ADDR_CHANGE | \
 			    PROMISC_CHANGE)
 
-static struct mlx5_vport *mlx5_eswitch_get_vport(struct mlx5_eswitch *esw,
-						 u16 vport_num)
+struct mlx5_vport *mlx5_eswitch_get_vport(struct mlx5_eswitch *esw,
+					  u16 vport_num)
 {
 	u16 idx = mlx5_eswitch_vport_num_to_index(esw, vport_num);
 
@@ -1916,7 +1916,7 @@ int mlx5_eswitch_set_vport_mac(struct mlx5_eswitch *esw,
 		return -EINVAL;
 
 	mutex_lock(&esw->state_lock);
-	evport = &esw->vports[vport];
+	evport = mlx5_eswitch_get_vport(esw, vport);
 
 	if (evport->info.spoofchk && !is_valid_ether_addr(mac))
 		mlx5_core_warn(esw->dev,
@@ -1960,7 +1960,7 @@ int mlx5_eswitch_set_vport_state(struct mlx5_eswitch *esw,
 		return -EINVAL;
 
 	mutex_lock(&esw->state_lock);
-	evport = &esw->vports[vport];
+	evport = mlx5_eswitch_get_vport(esw, vport);
 
 	err = mlx5_modify_vport_admin_state(esw->dev,
 					    MLX5_VPORT_STATE_OP_MOD_ESW_VPORT,
@@ -1989,7 +1989,7 @@ int mlx5_eswitch_get_vport_config(struct mlx5_eswitch *esw,
 	if (!LEGAL_VPORT(esw, vport))
 		return -EINVAL;
 
-	evport = &esw->vports[vport];
+	evport = mlx5_eswitch_get_vport(esw, vport);
 
 	memset(ivi, 0, sizeof(*ivi));
 	ivi->vf = vport - 1;
@@ -2020,7 +2020,7 @@ int __mlx5_eswitch_set_vport_vlan(struct mlx5_eswitch *esw,
 		return -EINVAL;
 
 	mutex_lock(&esw->state_lock);
-	evport = &esw->vports[vport];
+	evport = mlx5_eswitch_get_vport(esw, vport);
 
 	err = modify_esw_vport_cvlan(esw->dev, vport, vlan, qos, set_flags);
 	if (err)
@@ -2064,7 +2064,7 @@ int mlx5_eswitch_set_vport_spoofchk(struct mlx5_eswitch *esw,
 		return -EINVAL;
 
 	mutex_lock(&esw->state_lock);
-	evport = &esw->vports[vport];
+	evport = mlx5_eswitch_get_vport(esw, vport);
 	pschk = evport->info.spoofchk;
 	evport->info.spoofchk = spoofchk;
 	if (pschk && !is_valid_ether_addr(evport->info.mac))
@@ -2213,7 +2213,7 @@ int mlx5_eswitch_set_vport_trust(struct mlx5_eswitch *esw,
 		return -EINVAL;
 
 	mutex_lock(&esw->state_lock);
-	evport = &esw->vports[vport];
+	evport = mlx5_eswitch_get_vport(esw, vport);
 	evport->info.trusted = setting;
 	if (evport->enabled)
 		esw_vport_change_handle_locked(evport);
@@ -2299,7 +2299,7 @@ int mlx5_eswitch_set_vport_rate(struct mlx5_eswitch *esw, int vport,
 		return -EOPNOTSUPP;
 
 	mutex_lock(&esw->state_lock);
-	evport = &esw->vports[vport];
+	evport = mlx5_eswitch_get_vport(esw, vport);
 
 	if (min_rate == evport->info.min_rate)
 		goto set_max_rate;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
index fc512a5d0c4c..2e6b37d4fc7f 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
@@ -488,6 +488,8 @@ void mlx5e_tc_clean_fdb_peer_flows(struct mlx5_eswitch *esw);
 #define mlx5_esw_for_each_vf_vport_num_reverse(esw, vport, nvfs)	\
 	for ((vport) = (nvfs); (vport) >= MLX5_VPORT_FIRST_VF; (vport)--)
 
+struct mlx5_vport *mlx5_eswitch_get_vport(struct mlx5_eswitch *esw,
+					  u16 vport_num);
 #else  /* CONFIG_MLX5_ESWITCH */
 /* eswitch API stubs */
 static inline int  mlx5_eswitch_init(struct mlx5_core_dev *dev) { return 0; }
-- 
2.20.1