svcrdma: Change DMA mapping logic to avoid the page_address kernel API

[pandora-kernel.git] / net / sunrpc / xprtrdma / svc_rdma_transport.c

diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c
index edea15a..e87e000 100644 (file)
--- a/net/sunrpc/xprtrdma/svc_rdma_transport.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c
@@ -52,6 +52,7 @@
 #define RPCDBG_FACILITY        RPCDBG_SVCXPRT
 
 static struct svc_xprt *svc_rdma_create(struct svc_serv *serv,
+                                       struct net *net,
                                        struct sockaddr *sa, int salen,
                                        int flags);
 static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt);
@@ -120,7 +121,7 @@ void svc_rdma_unmap_dma(struct svc_rdma_op_ctxt *ctxt)
                 */
                if (ctxt->sge[i].lkey == xprt->sc_dma_lkey) {
                        atomic_dec(&xprt->sc_dma_used);
-                       ib_dma_unmap_single(xprt->sc_cm_id->device,
+                       ib_dma_unmap_page(xprt->sc_cm_id->device,
                                            ctxt->sge[i].addr,
                                            ctxt->sge[i].length,
                                            ctxt->direction);
@@ -502,8 +503,8 @@ int svc_rdma_post_recv(struct svcxprt_rdma *xprt)
                BUG_ON(sge_no >= xprt->sc_max_sge);
                page = svc_rdma_get_page();
                ctxt->pages[sge_no] = page;
-               pa = ib_dma_map_single(xprt->sc_cm_id->device,
-                                    page_address(page), PAGE_SIZE,
+               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;
@@ -670,6 +671,7 @@ static int rdma_cma_handler(struct rdma_cm_id *cma_id,
  * Create a listening RDMA service endpoint.
  */
 static struct svc_xprt *svc_rdma_create(struct svc_serv *serv,
+                                       struct net *net,
                                        struct sockaddr *sa, int salen,
                                        int flags)
 {
@@ -798,8 +800,8 @@ static void frmr_unmap_dma(struct svcxprt_rdma *xprt,
                if (ib_dma_mapping_error(frmr->mr->device, addr))
                        continue;
                atomic_dec(&xprt->sc_dma_used);
-               ib_dma_unmap_single(frmr->mr->device, addr, PAGE_SIZE,
-                                   frmr->direction);
+               ib_dma_unmap_page(frmr->mr->device, addr, PAGE_SIZE,
+                                 frmr->direction);
        }
 }
 
@@ -1274,7 +1276,7 @@ int svc_rdma_send(struct svcxprt_rdma *xprt, struct ib_send_wr *wr)
                                   atomic_read(&xprt->sc_sq_count) <
                                   xprt->sc_sq_depth);
                        if (test_bit(XPT_CLOSE, &xprt->sc_xprt.xpt_flags))
-                               return 0;
+                               return -ENOTCONN;
                        continue;
                }
                /* Take a transport ref for each WR posted */
@@ -1320,8 +1322,8 @@ void svc_rdma_send_error(struct svcxprt_rdma *xprt, struct rpcrdma_msg *rmsgp,
        length = svc_rdma_xdr_encode_error(xprt, rmsgp, err, va);
 
        /* Prepare SGE for local address */
-       sge.addr = ib_dma_map_single(xprt->sc_cm_id->device,
-                                  page_address(p), PAGE_SIZE, DMA_FROM_DEVICE);
+       sge.addr = ib_dma_map_page(xprt->sc_cm_id->device,
+                                  p, 0, PAGE_SIZE, DMA_FROM_DEVICE);
        if (ib_dma_mapping_error(xprt->sc_cm_id->device, sge.addr)) {
                put_page(p);
                return;
@@ -1348,7 +1350,7 @@ void svc_rdma_send_error(struct svcxprt_rdma *xprt, struct rpcrdma_msg *rmsgp,
        if (ret) {
                dprintk("svcrdma: Error %d posting send for protocol error\n",
                        ret);
-               ib_dma_unmap_single(xprt->sc_cm_id->device,
+               ib_dma_unmap_page(xprt->sc_cm_id->device,
                                  sge.addr, PAGE_SIZE,
                                  DMA_FROM_DEVICE);
                svc_rdma_put_context(ctxt, 1);