diff options
| author | Sagi Grimberg <sagig@mellanox.com> | 2014-12-11 16:04:16 +0100 |
|---|---|---|
| committer | Roland Dreier <roland@purestorage.com> | 2014-12-16 03:13:35 +0100 |
| commit | 860f10a799c83e38a69d5a69d80da5312a4c4106 (patch) | |
| tree | 32bc827e3535988397e99b11f9db5c429c09511f /include | |
| parent | IB/core: Add support for extended query device caps (diff) | |
| download | linux-860f10a799c83e38a69d5a69d80da5312a4c4106.tar.xz linux-860f10a799c83e38a69d5a69d80da5312a4c4106.zip | |
IB/core: Add flags for on demand paging support
* Add a configuration option for enable on-demand paging support in
the infiniband subsystem (CONFIG_INFINIBAND_ON_DEMAND_PAGING). In a
later patch, this configuration option will select the MMU_NOTIFIER
configuration option to enable mmu notifiers.
* Add a flag for on demand paging (ODP) support in the IB device capabilities.
* Add a flag to request ODP MR in the access flags to reg_mr.
* Fail registrations done with the ODP flag when the low-level driver
doesn't support this.
* Change the conditions in which an MR will be writable to explicitly
specify the access flags. This is to avoid making an MR writable just
because it is an ODP MR.
* Add a ODP capabilities to the extended query device verb.
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Shachar Raindel <raindel@mellanox.com>
Signed-off-by: Haggai Eran <haggaie@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/rdma/ib_verbs.h | 28 | ||||
| -rw-r--r-- | include/uapi/rdma/ib_user_verbs.h | 15 |
2 files changed, 41 insertions, 2 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 97a999f9e4d8..a41bc5a39ebf 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -123,7 +123,8 @@ enum ib_device_cap_flags { IB_DEVICE_MEM_WINDOW_TYPE_2A = (1<<23), IB_DEVICE_MEM_WINDOW_TYPE_2B = (1<<24), IB_DEVICE_MANAGED_FLOW_STEERING = (1<<29), - IB_DEVICE_SIGNATURE_HANDOVER = (1<<30) + IB_DEVICE_SIGNATURE_HANDOVER = (1<<30), + IB_DEVICE_ON_DEMAND_PAGING = (1<<31), }; enum ib_signature_prot_cap { @@ -143,6 +144,27 @@ enum ib_atomic_cap { IB_ATOMIC_GLOB }; +enum ib_odp_general_cap_bits { + IB_ODP_SUPPORT = 1 << 0, +}; + +enum ib_odp_transport_cap_bits { + IB_ODP_SUPPORT_SEND = 1 << 0, + IB_ODP_SUPPORT_RECV = 1 << 1, + IB_ODP_SUPPORT_WRITE = 1 << 2, + IB_ODP_SUPPORT_READ = 1 << 3, + IB_ODP_SUPPORT_ATOMIC = 1 << 4, +}; + +struct ib_odp_caps { + uint64_t general_caps; + struct { + uint32_t rc_odp_caps; + uint32_t uc_odp_caps; + uint32_t ud_odp_caps; + } per_transport_caps; +}; + struct ib_device_attr { u64 fw_ver; __be64 sys_image_guid; @@ -186,6 +208,7 @@ struct ib_device_attr { u8 local_ca_ack_delay; int sig_prot_cap; int sig_guard_cap; + struct ib_odp_caps odp_caps; }; enum ib_mtu { @@ -1073,7 +1096,8 @@ enum ib_access_flags { IB_ACCESS_REMOTE_READ = (1<<2), IB_ACCESS_REMOTE_ATOMIC = (1<<3), IB_ACCESS_MW_BIND = (1<<4), - IB_ZERO_BASED = (1<<5) + IB_ZERO_BASED = (1<<5), + IB_ACCESS_ON_DEMAND = (1<<6), }; struct ib_phys_buf { diff --git a/include/uapi/rdma/ib_user_verbs.h b/include/uapi/rdma/ib_user_verbs.h index e8a96071e352..4275b961bf60 100644 --- a/include/uapi/rdma/ib_user_verbs.h +++ b/include/uapi/rdma/ib_user_verbs.h @@ -202,15 +202,30 @@ struct ib_uverbs_query_device_resp { __u8 reserved[4]; }; +enum { + IB_USER_VERBS_EX_QUERY_DEVICE_ODP = 1ULL << 0, +}; + struct ib_uverbs_ex_query_device { __u32 comp_mask; __u32 reserved; }; +struct ib_uverbs_odp_caps { + __u64 general_caps; + struct { + __u32 rc_odp_caps; + __u32 uc_odp_caps; + __u32 ud_odp_caps; + } per_transport_caps; + __u32 reserved; +}; + struct ib_uverbs_ex_query_device_resp { struct ib_uverbs_query_device_resp base; __u32 comp_mask; __u32 reserved; + struct ib_uverbs_odp_caps odp_caps; }; struct ib_uverbs_query_port { |