| Message ID | 1681125115-7127-1-git-send-email-selvin.xavier@broadcom.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | RDMA/bnxt_re: driver update for supporting low latency push | expand |
On Mon, Apr 10, 2023 at 04:11:49AM -0700, Selvin Xavier wrote: > The series aims to add support for Low latency push path in > some of the bnxt devices. The low latency implementation is > supported only for the user applications. Also, the code > is modified to use common mmap helper functions exported > by IB core. What does it mean "low latency push"? Thanks > > User library changes are added in the pull request > https://github.com/linux-rdma/rdma-core/pull/1321 > > Please review. > > Thanks, > Selvin Xavier > > Selvin Xavier (6): > RDMA/bnxt_re: Use the common mmap helper functions > RDMA/bnxt_re: Add disassociate ucontext support > RDMA/bnxt_re: Query function capabilities from firmware > RDMA/bnxt_re: Move the interface version to chip context structure > RDMA/bnxt_re: Reorg the bar mapping > RDMA/bnxt_re: Enable low latency push > > drivers/infiniband/hw/bnxt_re/ib_verbs.c | 160 +++++++++++++++++++++--- > drivers/infiniband/hw/bnxt_re/ib_verbs.h | 17 +++ > drivers/infiniband/hw/bnxt_re/main.c | 123 +++++++++++++++++- > drivers/infiniband/hw/bnxt_re/qplib_fp.c | 14 +-- > drivers/infiniband/hw/bnxt_re/qplib_rcfw.c | 2 +- > drivers/infiniband/hw/bnxt_re/qplib_rcfw.h | 1 + > drivers/infiniband/hw/bnxt_re/qplib_res.c | 192 +++++++++++++++++++---------- > drivers/infiniband/hw/bnxt_re/qplib_res.h | 33 +++-- > drivers/infiniband/hw/bnxt_re/qplib_sp.c | 3 + > drivers/infiniband/hw/bnxt_re/qplib_sp.h | 1 + > include/uapi/rdma/bnxt_re-abi.h | 9 ++ > 11 files changed, 449 insertions(+), 106 deletions(-) > > -- > 2.5.5 >
On Mon, Apr 10, 2023 at 6:02 PM Leon Romanovsky <leon@kernel.org> wrote: > > On Mon, Apr 10, 2023 at 04:11:49AM -0700, Selvin Xavier wrote: > > The series aims to add support for Low latency push path in > > some of the bnxt devices. The low latency implementation is > > supported only for the user applications. Also, the code > > is modified to use common mmap helper functions exported > > by IB core. > > What does it mean "low latency push"? It is a hardware channel that can be used for transmitting smaller buffers (<=96 bytes) with lower latency. This is by pushing the data to HW buffers directly from the host (instead of DMA by the HW to get the data to be transmitted). Hence the name "low latency push". > > Thanks > > > > > User library changes are added in the pull request > > https://github.com/linux-rdma/rdma-core/pull/1321 > > > > Please review. > > > > Thanks, > > Selvin Xavier > > > > Selvin Xavier (6): > > RDMA/bnxt_re: Use the common mmap helper functions > > RDMA/bnxt_re: Add disassociate ucontext support > > RDMA/bnxt_re: Query function capabilities from firmware > > RDMA/bnxt_re: Move the interface version to chip context structure > > RDMA/bnxt_re: Reorg the bar mapping > > RDMA/bnxt_re: Enable low latency push > > > > drivers/infiniband/hw/bnxt_re/ib_verbs.c | 160 +++++++++++++++++++++--- > > drivers/infiniband/hw/bnxt_re/ib_verbs.h | 17 +++ > > drivers/infiniband/hw/bnxt_re/main.c | 123 +++++++++++++++++- > > drivers/infiniband/hw/bnxt_re/qplib_fp.c | 14 +-- > > drivers/infiniband/hw/bnxt_re/qplib_rcfw.c | 2 +- > > drivers/infiniband/hw/bnxt_re/qplib_rcfw.h | 1 + > > drivers/infiniband/hw/bnxt_re/qplib_res.c | 192 +++++++++++++++++++---------- > > drivers/infiniband/hw/bnxt_re/qplib_res.h | 33 +++-- > > drivers/infiniband/hw/bnxt_re/qplib_sp.c | 3 + > > drivers/infiniband/hw/bnxt_re/qplib_sp.h | 1 + > > include/uapi/rdma/bnxt_re-abi.h | 9 ++ > > 11 files changed, 449 insertions(+), 106 deletions(-) > > > > -- > > 2.5.5 > > > >