diff options
| author | Sagi Grimberg <sagig@mellanox.com> | 2016-02-29 18:07:32 +0100 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-03-04 17:59:34 +0100 |
| commit | f5aa9159a418726d74b67c8815ffd2739afb4c7a (patch) | |
| tree | 2205e3e00c4200279cd467f787c7aaae0204a5fd /include/rdma | |
| parent | IB/mlx5: Expose correct max_fast_reg_page_list_len (diff) | |
| download | linux-f5aa9159a418726d74b67c8815ffd2739afb4c7a.tar.xz linux-f5aa9159a418726d74b67c8815ffd2739afb4c7a.zip | |
IB/core: Add arbitrary sg_list support
Devices that are capable in registering SG lists
with gaps can now expose it in the core to ULPs
using a new device capability IB_DEVICE_SG_GAPS_REG
(in a new field device_cap_flags_ex in the device attributes
as we ran out of bits), and a new mr_type IB_MR_TYPE_SG_GAPS_REG
which allocates a memory region which is capable of handling
SG lists with gaps.
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'include/rdma')
| -rw-r--r-- | include/rdma/ib_verbs.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 3f79070de547..bcd5b242e6b1 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -212,6 +212,7 @@ enum ib_device_cap_flags { IB_DEVICE_MANAGED_FLOW_STEERING = (1 << 29), IB_DEVICE_SIGNATURE_HANDOVER = (1 << 30), IB_DEVICE_ON_DEMAND_PAGING = (1 << 31), + IB_DEVICE_SG_GAPS_REG = (1ULL << 32), }; enum ib_signature_prot_cap { @@ -662,10 +663,15 @@ __attribute_const__ int ib_rate_to_mbps(enum ib_rate rate); * @IB_MR_TYPE_SIGNATURE: memory region that is used for * signature operations (data-integrity * capable regions) + * @IB_MR_TYPE_SG_GAPS: memory region that is capable to + * register any arbitrary sg lists (without + * the normal mr constraints - see + * ib_map_mr_sg) */ enum ib_mr_type { IB_MR_TYPE_MEM_REG, IB_MR_TYPE_SIGNATURE, + IB_MR_TYPE_SG_GAPS, }; /** |