This series overhauls the "reply send" side of the RPC-over-RDMA transport to use the new rdma_rw API. Benefits include: <> Better code modularity, less code duplication with other ULPs <> Ability for svcrdma to use any registration mode for RDMA Writes <> Correctly handles RPCs that have both a Write and a Reply chunk <> Much better handling of Write chunk overrun No significant performance changes noticed with this overhaul. Additions outweigh deletions for two reasons: there are more large block comments in the new code, and code to handle "call receive" is also added in svc_rdma_rw.c, but not used yet. Available in the "nfsd-rdma-for-4.12" topic branch of this git repo: git://git.linux-nfs.org/projects/cel/cel-2.6.git Or for browsing: http://git.linux-nfs.org/?p=cel/cel-2.6.git;a=log;h=refs/heads/nfsd-rdma-for-4.12 --- Chuck Lever (14): svcrdma: Move send_wr to svc_rdma_op_ctxt svcrdma: Add svc_rdma_map_reply_hdr() svcrdma: Eliminate RPCRDMA_SQ_DEPTH_MULT svcrdma: Add helper to save pages under I/O svcrdma: Introduce local rdma_rw API helpers svcrdma: Use rdma_rw API in RPC reply path svcrdma: Clean up RDMA_ERROR path svcrdma: Report Write/Reply chunk overruns svcrdma: Clean up RPC-over-RDMA backchannel reply processing svcrdma: Reduce size of sge array in struct svc_rdma_op_ctxt svcrdma: Remove old RDMA Write completion handlers svcrdma: Remove the req_map cache svcrdma: Clean out old XDR encoders svcrdma: Clean up svc_rdma_post_recv() error handling include/linux/sunrpc/rpc_rdma.h | 3 include/linux/sunrpc/svc_rdma.h | 81 +-- net/sunrpc/xprtrdma/Makefile | 2 net/sunrpc/xprtrdma/svc_rdma.c | 8 net/sunrpc/xprtrdma/svc_rdma_backchannel.c | 74 +- net/sunrpc/xprtrdma/svc_rdma_marshal.c | 148 +++-- net/sunrpc/xprtrdma/svc_rdma_recvfrom.c | 80 ++- net/sunrpc/xprtrdma/svc_rdma_rw.c | 785 +++++++++++++++++++++++++ net/sunrpc/xprtrdma/svc_rdma_sendto.c | 872 ++++++++++++---------------- net/sunrpc/xprtrdma/svc_rdma_transport.c | 176 ++---- 10 files changed, 1438 insertions(+), 791 deletions(-) create mode 100644 net/sunrpc/xprtrdma/svc_rdma_rw.c -- Chuck Lever -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
