From: Leon Romanovsky <leonro@xxxxxxxxxxxx> Changelog: v3: * Rebased on top of ebd6e96b33a2 RDMA/ipoib: Remove can_sleep parameter from iboib_mcast_alloc * Updated rdma_reject patch to include newly added RTR ulp * Remove empty hunks added by rebase * Changed signature of rdma_reject so kernel users will provide reason by themselves * Squashed UAPI patch to other patches which add functionality * Removed define of the IBTA reason from UAPI v2: https://lore.kernel.org/linux-rdma/20200413141538.935574-1-leon@xxxxxxxxxx/ * Rebased on latest rdma-next and removed already accepted patches. * Updated all rdma_reject in-kernel users to provide reject reason. v1: Dropped field_avail patch in favor of mass conversion to use function which already exists in the kernel code. https://lore.kernel.org/lkml/20200310091438.248429-1-leon@xxxxxxxxxx v0: https://lore.kernel.org/lkml/20200305150105.207959-1-leon@xxxxxxxxxx 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 (6): RDMA/cm: Add Enhanced Connection Establishment (ECE) bits 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 | 39 ++++++++++++++--- drivers/infiniband/core/cma.c | 57 ++++++++++++++++++++++--- drivers/infiniband/core/cma_priv.h | 1 + drivers/infiniband/core/ucma.c | 49 +++++++++++++++++---- drivers/infiniband/ulp/isert/ib_isert.c | 4 +- drivers/infiniband/ulp/rtrs/rtrs-srv.c | 2 +- drivers/infiniband/ulp/srpt/ib_srpt.c | 3 +- drivers/nvme/target/rdma.c | 3 +- include/rdma/ib_cm.h | 9 +++- include/rdma/ibta_vol1_c12.h | 6 +++ include/rdma/rdma_cm.h | 9 +++- include/uapi/rdma/rdma_user_cm.h | 11 ++++- net/rds/ib_cm.c | 4 +- 13 files changed, 170 insertions(+), 27 deletions(-) -- 2.26.2
