[PATCH mlx5-next 2/6] net/mlx5: Expose TLP emulation capabilities
From: Leon Romanovsky <leon@kernel.org>
Date: 2026-02-25 14:19:49
Also in:
linux-rdma, lkml
Subsystem:
mellanox mlx5 ib driver, mellanox mlx5 core vpi driver, networking drivers, the rest · Maintainers:
Leon Romanovsky, Saeed Mahameed, Tariq Toukan, Mark Bloch, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Maher Sanalla <redacted> Expose and query TLP device emulation caps on driver load. Signed-off-by: Maher Sanalla <redacted> Signed-off-by: Leon Romanovsky <leonro@nvidia.com> --- drivers/net/ethernet/mellanox/mlx5/core/fw.c | 6 ++++++ drivers/net/ethernet/mellanox/mlx5/core/main.c | 1 + include/linux/mlx5/device.h | 9 +++++++++ 3 files changed, 16 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fw.c b/drivers/net/ethernet/mellanox/mlx5/core/fw.c
index eeb4437975f2..55249f405841 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fw.c@@ -255,6 +255,12 @@ int mlx5_query_hca_caps(struct mlx5_core_dev *dev) return err; } + if (MLX5_CAP_GEN(dev, tlp_device_emulation_manager)) { + err = mlx5_core_get_caps_mode(dev, MLX5_CAP_TLP_EMULATION, HCA_CAP_OPMOD_GET_CUR); + if (err) + return err; + } + if (MLX5_CAP_GEN(dev, ipsec_offload)) { err = mlx5_core_get_caps_mode(dev, MLX5_CAP_IPSEC, HCA_CAP_OPMOD_GET_CUR); if (err)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
index fdc3ba20912e..b0bc4a7d4a93 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c@@ -1772,6 +1772,7 @@ static const int types[] = { MLX5_CAP_CRYPTO, MLX5_CAP_SHAMPO, MLX5_CAP_ADV_RDMA, + MLX5_CAP_TLP_EMULATION, }; static void mlx5_hca_caps_free(struct mlx5_core_dev *dev)
diff --git a/include/linux/mlx5/device.h b/include/linux/mlx5/device.h
index b37fe39cef27..25c6b42140b2 100644
--- a/include/linux/mlx5/device.h
+++ b/include/linux/mlx5/device.h@@ -1259,6 +1259,7 @@ enum mlx5_cap_type { MLX5_CAP_PORT_SELECTION = 0x25, MLX5_CAP_ADV_VIRTUALIZATION = 0x26, MLX5_CAP_ADV_RDMA = 0x28, + MLX5_CAP_TLP_EMULATION = 0x2a, /* NUM OF CAP Types */ MLX5_CAP_NUM };
@@ -1481,6 +1482,14 @@ enum mlx5_qcam_feature_groups { MLX5_GET64(virtio_emulation_cap, \ (mdev)->caps.hca[MLX5_CAP_VDPA_EMULATION]->cur, cap) +#define MLX5_CAP_DEV_TLP_EMULATION(mdev, cap)\ + MLX5_GET(tlp_dev_emu_capabilities, \ + (mdev)->caps.hca[MLX5_CAP_TLP_EMULATION]->cur, cap) + +#define MLX5_CAP64_DEV_TLP_EMULATION(mdev, cap)\ + MLX5_GET64(tlp_dev_emu_capabilities, \ + (mdev)->caps.hca[MLX5_CAP_TLP_EMULATION]->cur, cap) + #define MLX5_CAP_IPSEC(mdev, cap)\ MLX5_GET(ipsec_cap, (mdev)->caps.hca[MLX5_CAP_IPSEC]->cur, cap)
--
2.53.0