diff options
| author | Erez Zilber <erezz@voltaire.com> | 2006-09-11 12:26:33 +0300 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2006-09-22 15:22:52 -0700 |
| commit | d81110285f7f6c07a0ce8f99a5ff158a647cd649 (patch) | |
| tree | 7ecbae2d81a7464114a7d57e1a7d0230aaa21071 /drivers/infiniband/ulp/iser/iser_verbs.c | |
| parent | e981f1d4b8288072ba7cf6b7141cd4aefb404383 (diff) | |
IB/iser: Do not use FMR for a single dma entry sg
Fast Memory Registration (fmr) is used to register for rdma an sg whose
elements are not linearly sequential after dma mapping.
The IB verbs layer provides an "all dma memory MR (memory region)" which
can be used for RDMA-ing a dma linearly sequential buffer.
Change the code to use the dma mr instead of doing fmr when dma mapping
produces a single dma entry sg.
Signed-off-by: Erez Zilber <erezz@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/ulp/iser/iser_verbs.c')
| -rw-r--r-- | drivers/infiniband/ulp/iser/iser_verbs.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/infiniband/ulp/iser/iser_verbs.c b/drivers/infiniband/ulp/iser/iser_verbs.c index 9b27a7c26aa..ecdca7fc1e4 100644 --- a/drivers/infiniband/ulp/iser/iser_verbs.c +++ b/drivers/infiniband/ulp/iser/iser_verbs.c @@ -88,8 +88,9 @@ static int iser_create_device_ib_res(struct iser_device *device) iser_cq_tasklet_fn, (unsigned long)device); - device->mr = ib_get_dma_mr(device->pd, - IB_ACCESS_LOCAL_WRITE); + device->mr = ib_get_dma_mr(device->pd, IB_ACCESS_LOCAL_WRITE | + IB_ACCESS_REMOTE_WRITE | + IB_ACCESS_REMOTE_READ); if (IS_ERR(device->mr)) goto dma_mr_err; @@ -606,6 +607,7 @@ int iser_reg_page_vec(struct iser_conn *ib_conn, mem_reg->rkey = mem->fmr->rkey; mem_reg->len = page_vec->length * SIZE_4K; mem_reg->va = io_addr; + mem_reg->is_fmr = 1; mem_reg->mem_h = (void *)mem; mem_reg->va += page_vec->offset; |