Hello all, This patch set introduces the Elastic RDMA Adapter (ERDMA) driver, which released in Apsara Conference 2021 by Alibaba. ERDMA enables large-scale RDMA acceleration capability in Alibaba ECS environment, initially offered in g7re instance. It can improve the efficiency of large-scale distributed computing and communication significantly and expand dynamically with the cluster scale of Alibaba Cloud. ERDMA is a RDMA networking adapter based on the Alibaba MOC hardware. It works in the VPC network environment (overlay network), and uses iWarp tranport protocol. ERDMA supports reliable connection (RC). ERDMA also supports both kernel space and user space verbs. Now we have already supported HPC/AI applications with libfabric, NoF and some other internal verbs libraries, such as xrdma, epsl, etc,. For the ECS instance with RDMA enabled, there are two kinds of devices allocated, one for ERDMA, and one for the original netdev (virtio-net). They are different PCI deivces. ERDMA driver can get the information about which netdev attached to in its PCIe barspace (by MAC address matching). Thanks, Cheng Xu Cheng Xu (11): RDMA: Add ERDMA to rdma_driver_id definition RDMA/erdma: Add the hardware related definitions RDMA/erdma: Add main include file RDMA/erdma: Add cmdq implementation RDMA/erdma: Add event queue implementation RDMA/erdma: Add verbs header file RDMA/erdma: Add verbs implementation RDMA/erdma: Add connection management (CM) support RDMA/erdma: Add the erdma module RDMA/erdma: Add the ABI definitions RDMA/erdma: Add driver to kernel build environment MAINTAINERS | 8 + drivers/infiniband/Kconfig | 1 + drivers/infiniband/hw/Makefile | 1 + drivers/infiniband/hw/erdma/Kconfig | 10 + drivers/infiniband/hw/erdma/Makefile | 5 + drivers/infiniband/hw/erdma/erdma.h | 381 +++++ drivers/infiniband/hw/erdma/erdma_cm.c | 1585 +++++++++++++++++++++ drivers/infiniband/hw/erdma/erdma_cm.h | 158 ++ drivers/infiniband/hw/erdma/erdma_cmdq.c | 489 +++++++ drivers/infiniband/hw/erdma/erdma_cq.c | 201 +++ drivers/infiniband/hw/erdma/erdma_debug.c | 314 ++++ drivers/infiniband/hw/erdma/erdma_debug.h | 18 + drivers/infiniband/hw/erdma/erdma_eq.c | 346 +++++ drivers/infiniband/hw/erdma/erdma_hw.h | 474 ++++++ drivers/infiniband/hw/erdma/erdma_main.c | 711 +++++++++ drivers/infiniband/hw/erdma/erdma_qp.c | 624 ++++++++ drivers/infiniband/hw/erdma/erdma_verbs.c | 1477 +++++++++++++++++++ drivers/infiniband/hw/erdma/erdma_verbs.h | 366 +++++ include/uapi/rdma/erdma-abi.h | 49 + include/uapi/rdma/ib_user_ioctl_verbs.h | 1 + 20 files changed, 7219 insertions(+) create mode 100644 drivers/infiniband/hw/erdma/Kconfig create mode 100644 drivers/infiniband/hw/erdma/Makefile create mode 100644 drivers/infiniband/hw/erdma/erdma.h create mode 100644 drivers/infiniband/hw/erdma/erdma_cm.c create mode 100644 drivers/infiniband/hw/erdma/erdma_cm.h create mode 100644 drivers/infiniband/hw/erdma/erdma_cmdq.c create mode 100644 drivers/infiniband/hw/erdma/erdma_cq.c create mode 100644 drivers/infiniband/hw/erdma/erdma_debug.c create mode 100644 drivers/infiniband/hw/erdma/erdma_debug.h create mode 100644 drivers/infiniband/hw/erdma/erdma_eq.c create mode 100644 drivers/infiniband/hw/erdma/erdma_hw.h create mode 100644 drivers/infiniband/hw/erdma/erdma_main.c create mode 100644 drivers/infiniband/hw/erdma/erdma_qp.c create mode 100644 drivers/infiniband/hw/erdma/erdma_verbs.c create mode 100644 drivers/infiniband/hw/erdma/erdma_verbs.h create mode 100644 include/uapi/rdma/erdma-abi.h -- 2.27.0
