diff options
| author | Bart Van Assche <bart.vanassche@sandisk.com> | 2016-05-12 10:49:15 -0700 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-05-13 13:37:57 -0400 |
| commit | 9aa8b3217ed3c13d4e3496020b140da0e6f49a08 (patch) | |
| tree | 4bf6441f7c72dcd7f07c15091e1212512446e680 /drivers/infiniband/hw/ocrdma | |
| parent | f83b2561a6d4ff12959660ad597580097b744941 (diff) | |
IB/core: Enhance ib_map_mr_sg()
The SRP initiator allows to set max_sectors to a value that exceeds
the largest amount of data that can be mapped at once with an mlx4
HCA using fast registration and a page size of 4 KB. Hence modify
ib_map_mr_sg() such that it can map partial sg-elements. If an
sg-element has been mapped partially, let the caller know
which fraction has been mapped by adjusting *sg_offset.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Tested-by: Laurence Oberman <loberman@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/ocrdma')
| -rw-r--r-- | drivers/infiniband/hw/ocrdma/ocrdma_verbs.c | 2 | ||||
| -rw-r--r-- | drivers/infiniband/hw/ocrdma/ocrdma_verbs.h | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c index 9ddd55022baf..b1a3d91fe8b9 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c +++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c @@ -3082,7 +3082,7 @@ static int ocrdma_set_page(struct ib_mr *ibmr, u64 addr) } int ocrdma_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, int sg_nents, - unsigned int sg_offset) + unsigned int *sg_offset) { struct ocrdma_mr *mr = get_ocrdma_mr(ibmr); diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.h b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.h index b290e5dfc5f1..704ef1e9271b 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.h +++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.h @@ -123,6 +123,6 @@ struct ib_mr *ocrdma_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type, u32 max_num_sg); int ocrdma_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, int sg_nents, - unsigned sg_offset); + unsigned int *sg_offset); #endif /* __OCRDMA_VERBS_H__ */ |