From: Michael Guralnik <michaelgur@xxxxxxxxxxxx>
If in the process of creating the underlay QP for an IPoIB interface
the user has set the address and specifically the 1st-3rd bytes
representing the QP number, use the requested QP number when creating
the underlay QP.
For a user to be able to request a QP number on QP creation, the MKEY_BY_NAME
NVCONFIG should be set. As mkey_by_name and qp_by_name are coupled in FW.
This requires driver to query the mkey_by_name max cap during initialization
and set the current cap if it was enabled in FW.
Signed-off-by: Michael Guralnik <michaelgur@xxxxxxxxxxxx>
Reviewed-by: Saeed Mahameed <saeedm@xxxxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
---
drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c | 7 +++++++
drivers/net/ethernet/mellanox/mlx5/core/main.c | 3 +++
include/linux/mlx5/mlx5_ifc.h | 9 +++++++--
3 files changed, 17 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c b/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c
index 690b822c6152..d1266d8fed97 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c
@@ -226,13 +226,20 @@ void mlx5i_uninit_underlay_qp(struct mlx5e_priv *priv)
int mlx5i_create_underlay_qp(struct mlx5e_priv *priv)
{
+ unsigned char *dev_addr = priv->netdev->dev_addr;
u32 out[MLX5_ST_SZ_DW(create_qp_out)] = {};
u32 in[MLX5_ST_SZ_DW(create_qp_in)] = {};
struct mlx5i_priv *ipriv = priv->ppriv;
void *addr_path;
+ int qpn = 0;
int ret = 0;
void *qpc;
+ if (MLX5_CAP_GEN(priv->mdev, mkey_by_name)) {
+ qpn = (dev_addr[1] << 16) + (dev_addr[2] << 8) + dev_addr[3];
+ MLX5_SET(create_qp_in, in, input_qpn, qpn);
+ }
+
qpc = MLX5_ADDR_OF(create_qp_in, in, qpc);
MLX5_SET(qpc, qpc, st, MLX5_QP_ST_UD);
MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_MIGRATED);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
index 8b658908f044..623785fe74b2 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
@@ -557,6 +557,9 @@ static int handle_hca_cap(struct mlx5_core_dev *dev, void *set_ctx)
if (MLX5_CAP_GEN_MAX(dev, release_all_pages))
MLX5_SET(cmd_hca_cap, set_hca_cap, release_all_pages, 1);
+ if (MLX5_CAP_GEN_MAX(dev, mkey_by_name))
+ MLX5_SET(cmd_hca_cap, set_hca_cap, mkey_by_name, 1);
+
return set_caps(dev, set_ctx, MLX5_SET_HCA_CAP_OP_MOD_GENERAL_DEVICE);
}
diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index ca1887dd0423..7a00110f2f01 100644
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -1392,7 +1392,10 @@ struct mlx5_ifc_cmd_hca_cap_bits {
u8 bf[0x1];
u8 driver_version[0x1];
u8 pad_tx_eth_packet[0x1];
- u8 reserved_at_263[0x8];
+ u8 reserved_at_263[0x3];
+ u8 mkey_by_name[0x1];
+ u8 reserved_at_267[0x4];
+
u8 log_bf_reg_size[0x5];
u8 reserved_at_270[0x8];
@@ -7714,8 +7717,10 @@ struct mlx5_ifc_create_qp_in_bits {
u8 reserved_at_20[0x10];
u8 op_mod[0x10];
- u8 reserved_at_40[0x40];
+ u8 reserved_at_40[0x8];
+ u8 input_qpn[0x18];
+ u8 reserved_at_60[0x20];
u8 opt_param_mask[0x20];
u8 ece[0x20];
--
2.26.2
