dlan17/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

IB/core: Add user MR re-registration support

Browse Source 
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
2014-08-01 15:11:13 -07:00
committed by Roland Dreier
parent 64aa90f26c
commit 7e6edb9b2e
5 changed files with 120 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/rdma/ib_verbs.h
+9 -1
View File
@@ -1097,7 +1097,8 @@ struct ib_mr_attr {
enum ib_mr_rereg_flags {
IB_MR_REREG_TRANS = 1,
IB_MR_REREG_PD = (1<<1),
IB_MR_REREG_ACCESS = (1<<2)
IB_MR_REREG_ACCESS = (1<<2),
IB_MR_REREG_SUPPORTED = ((IB_MR_REREG_ACCESS << 1) - 1)
};
/**
@@ -1547,6 +1548,13 @@ struct ib_device {
u64 virt_addr,
int mr_access_flags,
struct ib_udata *udata);
int (*rereg_user_mr)(struct ib_mr *mr,
int flags,
u64 start, u64 length,
u64 virt_addr,
int mr_access_flags,
struct ib_pd *pd,
struct ib_udata *udata);
int (*query_mr)(struct ib_mr *mr,
struct ib_mr_attr *mr_attr);
int (*dereg_mr)(struct ib_mr *mr);
include/uapi/rdma/ib_user_verbs.h
+16
View File
@@ -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;
};