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IB/core: Add user MR re-registration support

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Memory re-registration is a feature that enables changing the
attributes of a memory region registered by user-space, including PD,
translation (address and length) and access flags.

Add the required support in uverbs and the kernel verbs API.

Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Matan Barak 2014-07-31 11:01:28 +03:00 • committed by Roland Dreier
commit 7e6edb9b2e
5 changed files with 120 additions and 1 deletions
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16
include/uapi/rdma/ib_user_verbs.h
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@ -276,6 +276,22 @@ struct ib_uverbs_reg_mr_resp {
__u32 rkey;
};
struct ib_uverbs_rereg_mr {
__u64 response;
__u32 mr_handle;
__u32 flags;
__u64 start;
__u64 length;
__u64 hca_va;
__u32 pd_handle;
__u32 access_flags;
};
struct ib_uverbs_rereg_mr_resp {
__u32 lkey;
__u32 rkey;
};
struct ib_uverbs_dereg_mr {
__u32 mr_handle;
};