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authorMax Gurtovoy <maxg@mellanox.com>2019-06-11 18:52:38 +0300
committerJason Gunthorpe <jgg@mellanox.com>2019-06-24 17:49:26 +0300
commita0bc099abf7b45b16cb18459f3516af8c2fea781 (patch)
tree099531c4654bf7a0f6697b6b65fbd632e7d7af01 /include/rdma
parent36b1e47ff0c196a95d5e55a05b3f988f827cce7e (diff)
downloadlinux-a0bc099abf7b45b16cb18459f3516af8c2fea781.tar.xz
RDMA/core: Save the MR type in the ib_mr structure
This is a preparation for the signature verbs API change. This change is needed since the MR type will define, in the upcoming patches, the need for allocating internal resources in LLD for signature handover related operations. It will also help to make sure that signature related functions are called with an appropriate MR type and fail otherwise. Also introduce new mr types IB_MR_TYPE_USER, IB_MR_TYPE_DMA and IB_MR_TYPE_DM for correctness. Signed-off-by: Max Gurtovoy <maxg@mellanox.com> Signed-off-by: Israel Rukshin <israelr@mellanox.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'include/rdma')
-rw-r--r--include/rdma/ib_verbs.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index dc59fa12669a..b6ec71ee4d3e 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -782,11 +782,20 @@ __attribute_const__ int ib_rate_to_mbps(enum ib_rate rate);
* register any arbitrary sg lists (without
* the normal mr constraints - see
* ib_map_mr_sg)
+ * @IB_MR_TYPE_DM: memory region that is used for device
+ * memory registration
+ * @IB_MR_TYPE_USER: memory region that is used for the user-space
+ * application
+ * @IB_MR_TYPE_DMA: memory region that is used for DMA operations
+ * without address translations (VA=PA)
*/
enum ib_mr_type {
IB_MR_TYPE_MEM_REG,
IB_MR_TYPE_SIGNATURE,
IB_MR_TYPE_SG_GAPS,
+ IB_MR_TYPE_DM,
+ IB_MR_TYPE_USER,
+ IB_MR_TYPE_DMA,
};
enum ib_mr_status_check {
@@ -1719,6 +1728,7 @@ struct ib_mr {
u64 iova;
u64 length;
unsigned int page_size;
+ enum ib_mr_type type;
bool need_inval;
union {
struct ib_uobject *uobject; /* user */