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/cxgb4 | |
| parent | IB/srp: Fix srp_create_target() error handling (diff) | |
| download | linux-dev-9aa8b3217ed3c13d4e3496020b140da0e6f49a08.tar.xz linux-dev-9aa8b3217ed3c13d4e3496020b140da0e6f49a08.zip | |
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/cxgb4')
| -rw-r--r-- | drivers/infiniband/hw/cxgb4/iw_cxgb4.h | 2 | ||||
| -rw-r--r-- | drivers/infiniband/hw/cxgb4/mem.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h index 067cb3f909c1..1ff3ba8ab67b 100644 --- a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h +++ b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h @@ -918,7 +918,7 @@ struct ib_mr *c4iw_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type, u32 max_num_sg); int c4iw_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, int sg_nents, - unsigned int sg_offset); + unsigned int *sg_offset); int c4iw_dealloc_mw(struct ib_mw *mw); struct ib_mw *c4iw_alloc_mw(struct ib_pd *pd, enum ib_mw_type type, struct ib_udata *udata); diff --git a/drivers/infiniband/hw/cxgb4/mem.c b/drivers/infiniband/hw/cxgb4/mem.c index 38afb3d2dd92..83960df6fe60 100644 --- a/drivers/infiniband/hw/cxgb4/mem.c +++ b/drivers/infiniband/hw/cxgb4/mem.c @@ -691,7 +691,7 @@ static int c4iw_set_page(struct ib_mr *ibmr, u64 addr) } int c4iw_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, int sg_nents, - unsigned int sg_offset) + unsigned int *sg_offset) { struct c4iw_mr *mhp = to_c4iw_mr(ibmr); |