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| author |  Gal Pressman <galpress@amazon.com>
| 2020-07-22 17:03:11 +0300 |
|---|---|---|
| committer |  Jason Gunthorpe <jgg@nvidia.com>
| 2020-07-29 09:23:40 -0300 |
| commit | a5d87b698547233321466b2dc91271f5855a4df6 (patch) | |
| tree | 408b2b043ae9aef48aa894c5ec888913c5534b1f /include/uapi/rdma | |
| parent | RDMA/efa: Expose minimum SQ size (diff) | |
| download | linux-a5d87b698547233321466b2dc91271f5855a4df6.tar.gz linux-a5d87b698547233321466b2dc91271f5855a4df6.tar.bz2 linux-a5d87b698547233321466b2dc91271f5855a4df6.zip | |
RDMA/efa: User/kernel compatibility handshake mechanism
Introduce a mechanism that performs an handshake between the userspace
provider and kernel driver which verifies that the user supports all
required features in order to operate correctly.
The handshake verifies the needed functionality by comparing the reported
device caps and the provider caps. If the device reports a non-zero
capability the appropriate comp mask is required from the userspace
provider in order to allocate the context.
Link: https://lore.kernel.org/r/20200722140312.3651-4-galpress@amazon.com
Reviewed-by: Shadi Ammouri <sammouri@amazon.com>
Reviewed-by: Yossi Leybovich <sleybo@amazon.com>
Signed-off-by: Gal Pressman <galpress@amazon.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'include/uapi/rdma')
| -rw-r--r-- | include/uapi/rdma/efa-abi.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/uapi/rdma/efa-abi.h b/include/uapi/rdma/efa-abi.h index 7ef2306f8dd4..507a2862bedb 100644 --- a/include/uapi/rdma/efa-abi.h +++ b/include/uapi/rdma/efa-abi.h @@ -20,6 +20,16 @@ * hex bit offset of the field. */ +enum { + EFA_ALLOC_UCONTEXT_CMD_COMP_TX_BATCH = 1 << 0, + EFA_ALLOC_UCONTEXT_CMD_COMP_MIN_SQ_WR = 1 << 1, +}; + +struct efa_ibv_alloc_ucontext_cmd { + __u32 comp_mask; + __u8 reserved_20[4]; +}; + enum efa_ibv_user_cmds_supp_udata { EFA_USER_CMDS_SUPP_UDATA_QUERY_DEVICE = 1 << 0, EFA_USER_CMDS_SUPP_UDATA_CREATE_AH = 1 << 1, |