Currently the rdma_rxe driver and its user space provider exchange addressing information for UD sends by having the provider compute an address vector (AV) and send it with each WQE. This is not the way that the RDMA verbs API was intended to operate. This series of patches modifies the way UD send WQEs work by exchanging an index identifying the AH replacing the 88 byte AV by a 4 byte AH index. In order to not break compatibility with the existing API the rdma_rxe driver will recognise when an older version of the provider is not sending an index (i.e. it is 0) and will use the AV instead. Bob Pearson (5): RDMA/rxe: Change user/kernel API to allow indexing AH RDMA/rxe: Change AH objects to indexed RDMA/rxe: Create AH index and return to user space RDMA/rxe: Lookup kernel AH from ah index in UD WQEs RDMA/rxe: Convert kernel UD post send to use ah_num drivers/infiniband/sw/rxe/rxe_av.c | 20 +++++++++++++- drivers/infiniband/sw/rxe/rxe_param.h | 4 ++- drivers/infiniband/sw/rxe/rxe_pool.c | 4 ++- drivers/infiniband/sw/rxe/rxe_req.c | 8 +++--- drivers/infiniband/sw/rxe/rxe_verbs.c | 39 ++++++++++++++++++++++----- drivers/infiniband/sw/rxe/rxe_verbs.h | 8 +++++- include/uapi/rdma/rdma_user_rxe.h | 14 +++++++++- 7 files changed, 83 insertions(+), 14 deletions(-) -- 2.30.2
