V2 is just a rebase series, details below.
This patch set from Bodong is the supplementary part of the kernel series that
was accepted upstream into 4.10.
Packet pacing is a feature to control packet injection rate in arbitrary rates.
One typical use case is for streaming vendors to control the bandwidth of
different customers based on service coverage.
Packet pacing is a rate limiting and shaping for a QP (SQ for RAW QP), set and
change the rate is done by modifying QP.
This series made the following high level changes:
1. Report rate limit capabilities, it includes:
- The maximum and minimum rate limit in kbps supported
by packet pacing.
- Bitmap showing which QP types are supported by packet pacing operation.
2. Use the extended uverbs command for modify QP to add rate limit support.
3. Add support in mlx5 provider.
Pull request was sent:
https://github.com/linux-rdma/rdma-core/pull/51
Yishai
Changes from V1:
- Rebase over V1 of below cleanup patch.
Changes from V0:
- The series is sent on top of an extra cleanup patch named:
"rdma: Handle uninitialized data for ibv_cmd_modify_qp".
The above patch was sent upstream separately based on Leon's request so that it can
be taken by itself regardless this series.
- Patch #2: Add an extra check as part of ibv_cmd_query_qp to return an error
in case a mask that is not supported by that command was asked.
Bodong Wang (3):
ibverbs: Report packet pacing capabilities when querying device
ibverbs: Add support for packet pacing
mlx5: Add packet pacing support
libibverbs/cmd.c | 62 +++++++++++++++++++++++++++++++++---
libibverbs/driver.h | 5 +++
libibverbs/examples/devinfo.c | 21 ++++++++++++
libibverbs/kern-abi.h | 27 +++++++++++++---
libibverbs/libibverbs.map | 5 +++
libibverbs/man/ibv_modify_qp.3 | 2 ++
libibverbs/man/ibv_query_device_ex.3 | 7 ++++
libibverbs/verbs.h | 11 ++++++-
providers/mlx5/mlx5-abi.h | 2 ++
providers/mlx5/verbs.c | 18 ++++++++++-
10 files changed, 149 insertions(+), 11 deletions(-)
--
1.8.3.1
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