[EXPERIMENTAL,0/3] RDMA loopback device

Message

Parav Pandit Feb. 27, 2019, 6:15 a.m. UTC

This patchset adds RDMA loopback driver.
Initially for RoCE which works on lo netdevice.

It is tested with with nvme fabrics over ext4, perftests, and rping.
It only supports RC and GSI QPs.
It supports only RoCEv2 GIDs which belongs to loopback lo netdevice.

It is only posted for discussion [1].
It is not yet ready for RFC posting or merge.

Its counter part rdma-core will be posted shortly.

[1] https://www.spinics.net/lists/linux-rdma/msg76285.html

Parav Pandit (3):
  RDMA/loopback: Add helper lib for resources and cqe fifo
  RDMA/loopback: Loopback rdma (RoCE) driver
  RDMA/loopback: Support Fast memory registration

 drivers/infiniband/Kconfig                       |    1 +
 drivers/infiniband/sw/Makefile                   |    1 +
 drivers/infiniband/sw/loopback/Kconfig           |   14 +
 drivers/infiniband/sw/loopback/Makefile          |    4 +
 drivers/infiniband/sw/loopback/helper.c          |  139 ++
 drivers/infiniband/sw/loopback/loopback.c        | 1690 ++++++++++++++++++++++
 drivers/infiniband/sw/loopback/loopback_helper.h |   68 +
 include/uapi/rdma/rdma_user_ioctl_cmds.h         |    1 +
 8 files changed, 1918 insertions(+)
 create mode 100644 drivers/infiniband/sw/loopback/Kconfig
 create mode 100644 drivers/infiniband/sw/loopback/Makefile
 create mode 100644 drivers/infiniband/sw/loopback/helper.c
 create mode 100644 drivers/infiniband/sw/loopback/loopback.c
 create mode 100644 drivers/infiniband/sw/loopback/loopback_helper.h