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svcrdma: Modify post recv path to use local dma key

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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>
This commit is contained in:
Tom Tucker 2008-09-30 14:05:41 -05:00
parent e118321062
commit a5abf4e815
1 changed files with 9 additions and 3 deletions
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12
net/sunrpc/xprtrdma/svc_rdma_transport.c
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@ -483,7 +483,7 @@ int svc_rdma_post_recv(struct svcxprt_rdma *xprt)
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 @@ 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;
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 @@ int svc_rdma_post_recv(struct svcxprt_rdma *xprt)
svc_rdma_put_context(ctxt, 1);
}
return ret;
err_put_ctxt:
svc_rdma_put_context(ctxt, 1);
return -ENOMEM;
}
/*