diff options
Diffstat (limited to 'net/sunrpc/xprtrdma/fmr_ops.c')
| -rw-r--r-- | net/sunrpc/xprtrdma/fmr_ops.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/net/sunrpc/xprtrdma/fmr_ops.c b/net/sunrpc/xprtrdma/fmr_ops.c index f1e8dafbd507..cb25c89da623 100644 --- a/net/sunrpc/xprtrdma/fmr_ops.c +++ b/net/sunrpc/xprtrdma/fmr_ops.c @@ -39,6 +39,25 @@ static int fmr_op_open(struct rpcrdma_ia *ia, struct rpcrdma_ep *ep, struct rpcrdma_create_data_internal *cdata) { + struct ib_device_attr *devattr = &ia->ri_devattr; + struct ib_mr *mr; + + /* Obtain an lkey to use for the regbufs, which are + * protected from remote access. + */ + if (devattr->device_cap_flags & IB_DEVICE_LOCAL_DMA_LKEY) { + ia->ri_dma_lkey = ia->ri_device->local_dma_lkey; + } else { + mr = ib_get_dma_mr(ia->ri_pd, IB_ACCESS_LOCAL_WRITE); + if (IS_ERR(mr)) { + pr_err("%s: ib_get_dma_mr for failed with %lX\n", + __func__, PTR_ERR(mr)); + return -ENOMEM; + } + ia->ri_dma_lkey = ia->ri_dma_mr->lkey; + ia->ri_dma_mr = mr; + } + return 0; } |