Commit a0bc099a authored by Max Gurtovoy's avatar Max Gurtovoy Committed by Jason Gunthorpe
Browse files

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: default avatarMax Gurtovoy <maxg@mellanox.com>
Signed-off-by: default avatarIsrael Rukshin <israelr@mellanox.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarSagi Grimberg <sagi@grimberg.me>
Signed-off-by: default avatarJason Gunthorpe <jgg@mellanox.com>
parent 36b1e47f

drivers/infiniband/core/uverbs_cmd.c

+1 −0
Original line number Diff line number Diff line
@@ -745,6 +745,7 @@ static int ib_uverbs_reg_mr(struct uverbs_attr_bundle *attrs) 


	mr->device  = pd->device;

	mr->pd      = pd;

	mr->type    = IB_MR_TYPE_USER;

	mr->dm	    = NULL;

	mr->uobject = uobj;

	atomic_inc(&pd->usecnt);

drivers/infiniband/core/uverbs_std_types_mr.c

+1 −0
Original line number Diff line number Diff line
@@ -128,6 +128,7 @@ static int UVERBS_HANDLER(UVERBS_METHOD_DM_MR_REG)( 


	mr->device  = pd->device;

	mr->pd      = pd;

	mr->type    = IB_MR_TYPE_DM;

	mr->dm      = dm;

	mr->uobject = uobj;

	atomic_inc(&pd->usecnt);

drivers/infiniband/core/verbs.c

+2 −0
Original line number Diff line number Diff line
@@ -299,6 +299,7 @@ struct ib_pd *__ib_alloc_pd(struct ib_device *device, unsigned int flags, 


		mr->device	= pd->device;

		mr->pd		= pd;

		mr->type        = IB_MR_TYPE_DMA;

		mr->uobject	= NULL;

		mr->need_inval	= false;
@@ -2020,6 +2021,7 @@ struct ib_mr *ib_alloc_mr_user(struct ib_pd *pd, enum ib_mr_type mr_type, 
		mr->need_inval = false;

		mr->res.type = RDMA_RESTRACK_MR;

		rdma_restrack_kadd(&mr->res);

		mr->type = mr_type;

	}



	return mr;

include/rdma/ib_verbs.h

+10 −0
Original line number Diff line number Diff line
@@ -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 */

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