From: Leon Romanovsky <leonro@xxxxxxxxxxxx>
Hi,
This is second feature implemented on top of new ioctl() infrastructure,
the patches itself are stacked on previously sent IPsec series. In
addition to being tied to IPsec, this series will have extremely minor
conflict with Dave's netdev tree.
--- a/include/linux/mlx5/device.h
+++ b/include/linux/mlx5/device.h
@@@ -1016,7 -1018,7 +1021,8 @@@ enum mlx5_cap_type
MLX5_CAP_RESERVED,
MLX5_CAP_VECTOR_CALC,
MLX5_CAP_QOS,
+ MLX5_CAP_DEBUG,
+ MLX5_CAP_DEV_MEM,
/* NUM OF CAP Types */
MLX5_CAP_NUM
};
MLX5_CAP_DEBUG comes from netdev, while MLX5_CAP_DEV_MEM comes from this
series.
The IB device memory support was presented as RFC [1] by Ahamd.
Many types of user space application can get a real performance gain by
using the internal memory of an IB device. This can be useful to decrease
latency of a trading operation where data is already allocated in the device
memory, to save the PCI round trip when doing atomic operations on semaphores
remotely and also to save the PCI round trip when performing modification by the
device on received traffic that should be transmitted directly after this
modification.
In order for user space applications to use the internal device memory,
we implement allocate/free device memory verbs.
Thanks
[1] https://www.spinics.net/lists/linux-rdma/msg49702.html
Ariel Levkovich (4):
IB/uverbs: Expose device memory capabilities to user
IB/uverbs: Add device memory capabilities reporting
IB/uverbs: Add alloc/free dm uverbs ioctl support
IB/uverbs: Add device memory registration ioctl support
net/mlx5: Add MEMIC support
net/mlx5: Mkey creation command adjustments
IB/mlx5: Device memory support in mlx5_ib
IB/mlx5: Device memory mr registration support
drivers/infiniband/core/Makefile | 3 +-
drivers/infiniband/core/uverbs.h | 2 +
drivers/infiniband/core/uverbs_cmd.c | 6 +
drivers/infiniband/core/uverbs_std_types.c | 13 +-
drivers/infiniband/core/uverbs_std_types_dm.c | 108 ++++++++++++++++
drivers/infiniband/core/uverbs_std_types_mr.c | 140 +++++++++++++++++++++
drivers/infiniband/core/verbs.c | 6 +-
drivers/infiniband/hw/mlx5/main.c | 138 +++++++++++++++++++-
drivers/infiniband/hw/mlx5/mlx5_ib.h | 27 +++-
drivers/infiniband/hw/mlx5/mr.c | 90 ++++++++++++-
drivers/net/ethernet/mellanox/mlx5/core/alloc.c | 110 ++++++++++++++++
.../net/ethernet/mellanox/mlx5/core/en_common.c | 2 +-
drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 2 +-
.../net/ethernet/mellanox/mlx5/core/fpga/conn.c | 2 +-
drivers/net/ethernet/mellanox/mlx5/core/fw.c | 6 +
drivers/net/ethernet/mellanox/mlx5/core/main.c | 1 +
include/linux/mlx5/device.h | 17 +++
include/linux/mlx5/driver.h | 8 ++
include/linux/mlx5/mlx5_ifc.h | 84 ++++++++++++-
include/rdma/ib_verbs.h | 32 ++++-
include/rdma/uverbs_ioctl.h | 12 ++
include/uapi/rdma/ib_user_ioctl_cmds.h | 31 +++++
include/uapi/rdma/ib_user_verbs.h | 1 +
include/uapi/rdma/mlx5-abi.h | 1 +
include/uapi/rdma/mlx5_user_ioctl_cmds.h | 6 +-
25 files changed, 820 insertions(+), 28 deletions(-)
create mode 100644 drivers/infiniband/core/uverbs_std_types_dm.c
create mode 100644 drivers/infiniband/core/uverbs_std_types_mr.c
--
2.14.3
--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
