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IB/mlx5: Check supported flow table size 

Check that the required flow table size is supported
by device. Return ENOMEM error if no space left.

In addition change the create flow table routine
to return ENOMEM instead of ENOSPC.

Fixes: 038d2ef875 ('IB/mlx5: Add flow steering support')
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
hifive-unleashed-5.1
Maor Gottlieb 2017-03-29 06:09:00 +03:00 committed by Doug Ledford
parent 1377661298
commit dac388ef4c
1 changed files with 7 additions and 1 deletions
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8
drivers/infiniband/hw/mlx5/main.c
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@ -2049,11 +2049,14 @@ static struct mlx5_ib_flow_prio *get_flow_table(struct mlx5_ib_dev *dev,
struct mlx5_flow_namespace *ns = NULL;
struct mlx5_ib_flow_prio *prio;
struct mlx5_flow_table *ft;
int max_table_size;
int num_entries;
int num_groups;
int priority;
int err = 0;
max_table_size = BIT(MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
log_max_ft_size));
if (flow_attr->type == IB_FLOW_ATTR_NORMAL) {
if (flow_is_multicast_only(flow_attr) &&
!dont_trap)
@ -2092,6 +2095,9 @@ static struct mlx5_ib_flow_prio *get_flow_table(struct mlx5_ib_dev *dev,
if (!ns)
return ERR_PTR(-ENOTSUPP);
if (num_entries > max_table_size)
return ERR_PTR(-ENOMEM);
ft = prio->flow_table;
if (!ft) {
ft = mlx5_create_auto_grouped_flow_table(ns, priority,
@ -2316,7 +2322,7 @@ static struct ib_flow *mlx5_ib_create_flow(struct ib_qp *qp,
int err;
if (flow_attr->priority > MLX5_IB_FLOW_LAST_PRIO)
return ERR_PTR(-ENOSPC);
return ERR_PTR(-ENOMEM);
if (domain != IB_FLOW_DOMAIN_USER ||
flow_attr->port > MLX5_CAP_GEN(dev->mdev, num_ports) ||