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net/mlx5: Change the acl enable prototype to return status

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The Ingress/Egress ACL enable function may fail and it should return
status to its caller to avoid NULL pointer dereference.

Fixes: f942380c12 ('net/mlx5: E-Switch, Vport ingress/egress ACLs rules for spoofchk')
Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Mohamad Haj Yahia 2016-10-25 18:36:31 +03:00 committed by David S. Miller
parent 5e1e93c704
commit 247f139cda
1 changed files with 34 additions and 16 deletions
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50
drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
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@ -931,8 +931,8 @@ static void esw_vport_change_handler(struct work_struct *work)
mutex_unlock(&esw->state_lock);
}
static void esw_vport_enable_egress_acl(struct mlx5_eswitch *esw,
struct mlx5_vport *vport)
static int esw_vport_enable_egress_acl(struct mlx5_eswitch *esw,
struct mlx5_vport *vport)
{
int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
struct mlx5_flow_group *vlan_grp = NULL;
@ -949,9 +949,11 @@ static void esw_vport_enable_egress_acl(struct mlx5_eswitch *esw,
int table_size = 2;
int err = 0;
if (!MLX5_CAP_ESW_EGRESS_ACL(dev, ft_support) ||
!IS_ERR_OR_NULL(vport->egress.acl))
return;
if (!MLX5_CAP_ESW_EGRESS_ACL(dev, ft_support))
return -EOPNOTSUPP;
if (!IS_ERR_OR_NULL(vport->egress.acl))
return 0;
esw_debug(dev, "Create vport[%d] egress ACL log_max_size(%d)\n",
vport->vport, MLX5_CAP_ESW_EGRESS_ACL(dev, log_max_ft_size));
@ -959,12 +961,12 @@ static void esw_vport_enable_egress_acl(struct mlx5_eswitch *esw,
root_ns = mlx5_get_flow_namespace(dev, MLX5_FLOW_NAMESPACE_ESW_EGRESS);
if (!root_ns) {
esw_warn(dev, "Failed to get E-Switch egress flow namespace\n");
return;
return -EIO;
}
flow_group_in = mlx5_vzalloc(inlen);
if (!flow_group_in)
return;
return -ENOMEM;
acl = mlx5_create_vport_flow_table(root_ns, 0, table_size, 0, vport->vport);
if (IS_ERR(acl)) {
@ -1009,6 +1011,7 @@ static void esw_vport_enable_egress_acl(struct mlx5_eswitch *esw,
mlx5_destroy_flow_group(vlan_grp);
if (err && !IS_ERR_OR_NULL(acl))
mlx5_destroy_flow_table(acl);
return err;
}
static void esw_vport_cleanup_egress_rules(struct mlx5_eswitch *esw,
@ -1041,8 +1044,8 @@ static void esw_vport_disable_egress_acl(struct mlx5_eswitch *esw,
vport->egress.acl = NULL;
}
static void esw_vport_enable_ingress_acl(struct mlx5_eswitch *esw,
struct mlx5_vport *vport)
static int esw_vport_enable_ingress_acl(struct mlx5_eswitch *esw,
struct mlx5_vport *vport)
{
int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
struct mlx5_core_dev *dev = esw->dev;
@ -1063,9 +1066,11 @@ static void esw_vport_enable_ingress_acl(struct mlx5_eswitch *esw,
int table_size = 4;
int err = 0;
if (!MLX5_CAP_ESW_INGRESS_ACL(dev, ft_support) ||
!IS_ERR_OR_NULL(vport->ingress.acl))
return;
if (!MLX5_CAP_ESW_INGRESS_ACL(dev, ft_support))
return -EOPNOTSUPP;
if (!IS_ERR_OR_NULL(vport->ingress.acl))
return 0;
esw_debug(dev, "Create vport[%d] ingress ACL log_max_size(%d)\n",
vport->vport, MLX5_CAP_ESW_INGRESS_ACL(dev, log_max_ft_size));
@ -1073,12 +1078,12 @@ static void esw_vport_enable_ingress_acl(struct mlx5_eswitch *esw,
root_ns = mlx5_get_flow_namespace(dev, MLX5_FLOW_NAMESPACE_ESW_INGRESS);
if (!root_ns) {
esw_warn(dev, "Failed to get E-Switch ingress flow namespace\n");
return;
return -EIO;
}
flow_group_in = mlx5_vzalloc(inlen);
if (!flow_group_in)
return;
return -ENOMEM;
acl = mlx5_create_vport_flow_table(root_ns, 0, table_size, 0, vport->vport);
if (IS_ERR(acl)) {
@ -1167,6 +1172,7 @@ static void esw_vport_enable_ingress_acl(struct mlx5_eswitch *esw,
}
kvfree(flow_group_in);
return err;
}
static void esw_vport_cleanup_ingress_rules(struct mlx5_eswitch *esw,
@ -1225,7 +1231,13 @@ static int esw_vport_ingress_config(struct mlx5_eswitch *esw,
return 0;
}
esw_vport_enable_ingress_acl(esw, vport);
err = esw_vport_enable_ingress_acl(esw, vport);
if (err) {
mlx5_core_warn(esw->dev,
"failed to enable ingress acl (%d) on vport[%d]\n",
err, vport->vport);
return err;
}
esw_debug(esw->dev,
"vport[%d] configure ingress rules, vlan(%d) qos(%d)\n",
@ -1299,7 +1311,13 @@ static int esw_vport_egress_config(struct mlx5_eswitch *esw,
return 0;
}
esw_vport_enable_egress_acl(esw, vport);
err = esw_vport_enable_egress_acl(esw, vport);
if (err) {
mlx5_core_warn(esw->dev,
"failed to enable egress acl (%d) on vport[%d]\n",
err, vport->vport);
return err;
}
esw_debug(esw->dev,
"vport[%d] configure egress rules, vlan(%d) qos(%d)\n",