From: Leon Romanovsky <leonro@xxxxxxxxxxxx> Enhanced Connection Established or ECE is new negotiation scheme introduced in IBTA v1.4 to exchange extra information about nodes capabilities and later negotiate them at the connection establishment phase. The RDMA-CM messages (REQ, REP, SIDR_REQ and SIDR_REP) were extended to carry two fields, one new and another gained new functionality: * VendorID is a new field that indicates that common subset of vendor option bits are supported as indicated by that VendorID. * AttributeModifier already exists, but overloaded to indicate which vendor options are supported by this VendorID. This is kernel part of such functionality which is responsible to get data from librdmacm and properly create and handle RDMA-CM messages. Thanks Leon Romanovsky (9): RDMA/cm: Add Enhanced Connection Establishment (ECE) bits RDMA: Promote field_avail() macro to be general code RDMA/cm: Delete not implemented CM peer to peer communication RDMA/uapi: Add ECE definitions to UCMA RDMA/ucma: Extend ucma_connect to receive ECE parameters RDMA/ucma: Deliver ECE parameters through UCMA events RDMA/cm: Send and receive ECE parameter over the wire RDMA/cma: Connect ECE to rdma_accept RDMA/cma: Provide ECE reject reason drivers/infiniband/core/cm.c | 48 ++++++++++++++++++------ drivers/infiniband/core/cma.c | 54 ++++++++++++++++++++++++--- drivers/infiniband/core/cma_priv.h | 1 + drivers/infiniband/core/ucma.c | 40 ++++++++++++++++---- drivers/infiniband/hw/efa/efa_verbs.c | 3 -- drivers/infiniband/hw/mlx4/main.c | 7 +--- drivers/infiniband/hw/mlx5/main.c | 41 ++++++++++---------- drivers/infiniband/hw/mlx5/mlx5_ib.h | 18 ++++----- include/linux/kernel.h | 18 +++++++++ include/rdma/ib_cm.h | 11 +++++- include/rdma/ibta_vol1_c12.h | 6 +++ include/rdma/rdma_cm.h | 28 ++++++++++++-- include/uapi/rdma/rdma_user_cm.h | 15 +++++++- 13 files changed, 219 insertions(+), 71 deletions(-) -- 2.24.1
