This series from Noa is the complementary user space part
of the kernel code that was merged into 4.11.
This series unifies all existing raw packet capabilities under a new
field in ibv_device_attr_ex named raw_packet_caps. This field is defined
by the ibv_raw_packet_caps enum.
The existing IP csum and scatter FCS capabilities were added to the
enum and a new capability was introduced - cvlan stripping offload.
Cvlan stripping is the device's capability to remove the cvlan from
an incoming raw packet and provide the data in the matching work
completion.
This series also:
- Allows creation of WQ and raw Ethernet QP with cvlan stripping capability.
This is done by setting the IBV_WQ_FLAGS_CVLAN_STRIPPING bit of the
create_flags field in ibv_wq_init_attr struct.
- Allows setting and unsetting of cvlan stripping capability for an existing WQ.
This is done by setting the following fields of the ibv_wq_attr struct:
- Setting IBV_WQ_ATTR_FLAGS bit of the attr_mask field.
- Setting the IBV_RAW_PACKET_CAP_CVLAN_STRIPPING bit of the
flags_mask field.
- Either setting or unsetting the IBV_RAW_PACKET_CAP_CVLAN_STRIPPING
bit of the flags field.
- Allows creation of WQ with scatter FCS offload.
This is done by setting the IBV_WQ_FLAGS_SCATTER_FCS bit of the
create_flags field in ibv_wq_init_attr struct.
- Allows reading the cvlan data from ibv_cq_ex by an extra read function
named ibv_wc_read_cvlan.
Pull request was sent:
https://github.com/linux-rdma/rdma-core/pull/96
Noa Osherovich (7):
ibverbs: Report raw packet caps as part of query device
ibverbs: Allow creation and modification of WQ with cvlan offload
ibverbs: Allow creation of QP with cvlan stripping offload
ibverbs: Add an option to poll cvlan value from a CQ
mlx5: Add read_cvlan support
ibverbs: Update man pages to include cvlan offloads options
ibverbs: Add support for scatter FCS ability in WQ
libibverbs/cmd.c | 29 ++++++++++++++++++++++++++++-
libibverbs/examples/devinfo.c | 14 ++++++++++++++
libibverbs/kern-abi.h | 6 +++++-
libibverbs/man/ibv_create_cq_ex.3 | 9 +++++++--
libibverbs/man/ibv_create_wq.3 | 10 ++++++++++
libibverbs/man/ibv_modify_wq.3 | 2 ++
libibverbs/man/ibv_query_device_ex.3 | 1 +
libibverbs/verbs.h | 35 +++++++++++++++++++++++++++++++----
providers/mlx5/cq.c | 9 +++++++++
providers/mlx5/verbs.c | 3 ++-
10 files changed, 109 insertions(+), 9 deletions(-)
--
1.8.3.1
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