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authorEli Cohen <eli@mellanox.com>2017-02-14 07:25:38 +0200
committerDoug Ledford <dledford@redhat.com>2017-02-15 09:29:37 -0500
commitcdbe33d0f82d68ff74f05502a4c26e65ec7e90bb (patch)
tree5e179fb792e0a48418cb8a2fb9ea0fafe1f8c236 /drivers/infiniband/hw/mlx5
parenta748d60df32ec5da31626a140be1795eefa04282 (diff)
IB/mlx5: Fix configuration of port capabilities
When the "ib_virt" cap is set, configuration of port capabilities need to be done through mlx5_core_modify_hca_vport_context. Since modify_hca_vport_context accepts mask and value, there is no need to read the port capabilities and calculate the new cap values so we avoid the mutex when ib_virt is set. Signed-off-by: Eli Cohen <eli@mellanox.com> Reviewed-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/mlx5')
-rw-r--r--drivers/infiniband/hw/mlx5/main.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index 8fd35ebb13e3..4a043cf35b9a 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -995,6 +995,31 @@ static int mlx5_ib_modify_device(struct ib_device *ibdev, int mask,
return err;
}
+static int set_port_caps_atomic(struct mlx5_ib_dev *dev, u8 port_num, u32 mask,
+ u32 value)
+{
+ struct mlx5_hca_vport_context ctx = {};
+ int err;
+
+ err = mlx5_query_hca_vport_context(dev->mdev, 0,
+ port_num, 0, &ctx);
+ if (err)
+ return err;
+
+ if (~ctx.cap_mask1_perm & mask) {
+ mlx5_ib_warn(dev, "trying to change bitmask 0x%X but change supported 0x%X\n",
+ mask, ctx.cap_mask1_perm);
+ return -EINVAL;
+ }
+
+ ctx.cap_mask1 = value;
+ ctx.cap_mask1_perm = mask;
+ err = mlx5_core_modify_hca_vport_context(dev->mdev, 0,
+ port_num, 0, &ctx);
+
+ return err;
+}
+
static int mlx5_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
struct ib_port_modify *props)
{
@@ -1002,6 +1027,16 @@ static int mlx5_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
struct ib_port_attr attr;
u32 tmp;
int err;
+ u32 change_mask;
+ u32 value;
+ bool is_ib = (mlx5_ib_port_link_layer(ibdev, port) ==
+ IB_LINK_LAYER_INFINIBAND);
+
+ if (MLX5_CAP_GEN(dev->mdev, ib_virt) && is_ib) {
+ change_mask = props->clr_port_cap_mask | props->set_port_cap_mask;
+ value = ~props->clr_port_cap_mask | props->set_port_cap_mask;
+ return set_port_caps_atomic(dev, port, change_mask, value);
+ }
mutex_lock(&dev->cap_mask_mutex);