svcrdma: Modify post recv path to use local dma key
Update the svc_rdma_post_recv routine to use the adapter's global LKEY
instead of sc_phys_mr which is only valid when using a DMA MR.
Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c
index c3e8db0..d9183cb 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_transport.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c
@@ -483,7 +483,7 @@
struct ib_recv_wr recv_wr, *bad_recv_wr;
struct svc_rdma_op_ctxt *ctxt;
struct page *page;
- unsigned long pa;
+ dma_addr_t pa;
int sge_no;
int buflen;
int ret;
@@ -495,13 +495,15 @@
BUG_ON(sge_no >= xprt->sc_max_sge);
page = svc_rdma_get_page();
ctxt->pages[sge_no] = page;
- atomic_inc(&xprt->sc_dma_used);
pa = ib_dma_map_page(xprt->sc_cm_id->device,
page, 0, PAGE_SIZE,
DMA_FROM_DEVICE);
+ if (ib_dma_mapping_error(xprt->sc_cm_id->device, pa))
+ goto err_put_ctxt;
+ atomic_inc(&xprt->sc_dma_used);
ctxt->sge[sge_no].addr = pa;
ctxt->sge[sge_no].length = PAGE_SIZE;
- ctxt->sge[sge_no].lkey = xprt->sc_phys_mr->lkey;
+ ctxt->sge[sge_no].lkey = xprt->sc_dma_lkey;
buflen += PAGE_SIZE;
}
ctxt->count = sge_no;
@@ -517,6 +519,10 @@
svc_rdma_put_context(ctxt, 1);
}
return ret;
+
+ err_put_ctxt:
+ svc_rdma_put_context(ctxt, 1);
+ return -ENOMEM;
}
/*