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| author | Tom Tucker <tom@opengridcomputing.com> | 2008-08-12 15:12:10 -0500 |
|---|---|---|
| committer | Tom Tucker <tom@opengridcomputing.com> | 2008-10-06 14:46:01 -0500 |
| commit | 146b6df6a537939570c5772ebd7db826fdbd5d82 (patch) | |
| tree | 1acf55f3244719e543fb5f6eed6de11c5dd3110e /include/linux | |
| parent | 5b180a9a64ca2217a658bd515ef910eafefc5e5a (diff) | |
| download | blackbird-obmc-linux-146b6df6a537939570c5772ebd7db826fdbd5d82.tar.gz blackbird-obmc-linux-146b6df6a537939570c5772ebd7db826fdbd5d82.zip | |
svcrdma: Modify the RPC recv path to use FRMR when available
RPCRDMA requests that specify a read-list are fetched with RDMA_READ. Using
an FRMR to map the data sink improves NFSRDMA security on transports that
place the RDMA_READ data sink LKEY on the wire because the valid lifetime
of the MR is only the duration of the RDMA_READ. The LKEY is invalidated
when the last RDMA_READ WR completes.
Mapping the data sink also allows for very large amounts to data to be
fetched with a single WR, so if the client is also using FRMR, the entire
RPC read-list can be fetched with a single WR.
Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/sunrpc/svc_rdma.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/sunrpc/svc_rdma.h b/include/linux/sunrpc/svc_rdma.h index 1402d193b393..c14fe86dac59 100644 --- a/include/linux/sunrpc/svc_rdma.h +++ b/include/linux/sunrpc/svc_rdma.h @@ -212,6 +212,7 @@ extern int svc_rdma_post_recv(struct svcxprt_rdma *); extern int svc_rdma_create_listen(struct svc_serv *, int, struct sockaddr *); extern struct svc_rdma_op_ctxt *svc_rdma_get_context(struct svcxprt_rdma *); extern void svc_rdma_put_context(struct svc_rdma_op_ctxt *, int); +extern void svc_rdma_unmap_dma(struct svc_rdma_op_ctxt *ctxt); extern struct svc_rdma_req_map *svc_rdma_get_req_map(void); extern void svc_rdma_put_req_map(struct svc_rdma_req_map *); extern int svc_rdma_fastreg(struct svcxprt_rdma *, struct svc_rdma_fastreg_mr *); |
