summaryrefslogtreecommitdiffstats
path: root/include
diff options
context:
space:
mode:
authorMatan Barak <matanb@mellanox.com>2014-07-31 11:01:28 +0300
committerRoland Dreier <roland@purestorage.com>2014-08-01 15:11:13 -0700
commit7e6edb9b2e0bcfb2a588db390c44d120213c57ae (patch)
tree9a8699e7cf72bc2c12574e3a2c46ddf10c542cd2 /include
parent64aa90f26c06e1cb2aacfb98a7d0eccfbd6c1a91 (diff)
downloadlinux-stable-7e6edb9b2e0bcfb2a588db390c44d120213c57ae.tar.gz
linux-stable-7e6edb9b2e0bcfb2a588db390c44d120213c57ae.tar.bz2
linux-stable-7e6edb9b2e0bcfb2a588db390c44d120213c57ae.zip
IB/core: Add user MR re-registration support
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>
Diffstat (limited to 'include')
-rw-r--r--include/rdma/ib_verbs.h10
-rw-r--r--include/uapi/rdma/ib_user_verbs.h16
2 files changed, 25 insertions, 1 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 7ccef342f724..ed44cc07a7b3 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -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);
diff --git a/include/uapi/rdma/ib_user_verbs.h b/include/uapi/rdma/ib_user_verbs.h
index cbfdd4ca9510..26daf55ff76e 100644
--- a/include/uapi/rdma/ib_user_verbs.h
+++ b/include/uapi/rdma/ib_user_verbs.h
@@ -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;
};