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2020-07-13svcrdma: Add common XDR encoders for RDMA and Read segmentsChuck Lever1-0/+37
Clean up: De-duplicate some code. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-07-13svcrdma: Add common XDR decoders for RDMA and Read segmentsChuck Lever1-0/+37
Clean up: De-duplicate some code. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-03-16svcrdma: Use struct xdr_stream to decode ingress transport headersChuck Lever1-1/+2
The logic that checks incoming network headers has to be scrupulous. De-duplicate: replace open-coded buffer overflow checks with the use of xdr_stream helpers that are used most everywhere else XDR decoding is done. One minor change to the sanity checks: instead of checking the length of individual segments, cap the length of the whole chunk to be sure it can fit in the set of pages available in rq_pages. This should be a better test of whether the server can handle the chunks in each request. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2018-05-07xprtrdma: Add proper SPDX tags for NetApp-contributed sourceChuck Lever1-0/+1
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2017-11-17xprtrdma: Update copyright noticesChuck Lever1-0/+1
Credit work contributed by Oracle engineers since 2014. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2017-11-17rpcrdma: Remove C structure definitions of XDR data itemsChuck Lever1-59/+0
Clean up: C-structure style XDR encoding and decoding logic has been replaced over the past several merge windows on both the client and server. These data structures are no longer used. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Reviewed-by: Devesh Sharma <devesh.sharma@broadcom.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2017-04-25svcrdma: Clean up RDMA_ERROR pathChuck Lever1-0/+3
Now that svc_rdma_sendto has been renovated, svc_rdma_send_error can be refactored to reduce code duplication and remove C structure- based XDR encoding. It is also relocated to the source file that contains its only caller. This is a refactoring change only. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2017-02-08svcrdma: Another sendto chunk list parsing updateChuck Lever1-0/+9
Commit 5fdca6531434 ("svcrdma: Renovate sendto chunk list parsing") missed a spot. svc_rdma_xdr_get_reply_hdr_len() also assumes the Write list has only one Write chunk. There's no harm in making this code more general. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2016-09-19xprtrdma: Client-side support for rpcrdma_connect_privateChuck Lever1-0/+4
Send an RDMA-CM private message on connect, and look for one during a connection-established event. Both sides can communicate their various implementation limits. Implementations that don't support this sideband protocol ignore it. Once the client knows the server's inline threshold maxima, it can adjust the use of Reply chunks, and eliminate most use of Position Zero Read chunks. Moderately-sized I/O can be done using a pure inline RDMA Send instead of RDMA operations that require memory registration. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2016-09-19rpcrdma: RDMA/CM private message data structureChuck Lever1-0/+35
Introduce data structure used by both client and server to exchange implementation details during RDMA/CM connection establishment. This is an experimental out-of-band exchange between Linux RPC-over-RDMA Version One implementations, replacing the deprecated CCP (see RFC 5666bis). The purpose of this extension is to enable prototyping of features that might be introduced in a subsequent version of RPC-over-RDMA. Suggested by Christoph Hellwig and Devesh Sharma. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2016-03-14xprtrdma: Properly handle RDMA_ERROR repliesChuck Lever1-5/+6
These are shorter than RPCRDMA_HDRLEN_MIN, and they need to complete the waiting RPC. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2016-03-14rpcrdma: Add RPCRDMA_HDRLEN_ERRChuck Lever1-0/+1
Error headers are shorter than either RDMA_MSG or RDMA_NOMSG. Since HDRLEN_MIN is already used in several other places that would be annoying to change, add RPCRDMA_HDRLEN_ERR for the one or two spots where the shorter length is needed. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Reviewed-by: Devesh Sharma <devesh.sharma@broadcom.com> Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2015-01-30xprtrdma: Clean up hdrlenChuck Lever1-1/+4
Clean up: Replace naked integers with a documenting macro. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Reviewed-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2015-01-30xprtrdma: Modernize htonl and ntohlChuck Lever1-0/+9
Clean up: Replace htonl and ntohl with the be32 equivalents. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Reviewed-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2009-12-14sunrpc: Clean never used include filesBoaz Harrosh1-0/+2
Remove include of two headers never used by this file. Doing so exposed a missing #include <linux/types.h> in include/linux/sunrpc/rpc_rdma.h. I did not see any other users dependency but if exist they should be fixed since these headers are totally irrelevant to here. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2007-10-29SUNRPC endianness annotationsAl Viro1-16/+16
rpcrdma stuff lacks endianness annotations for on-the-wire data. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-09RPCRDMA: Kconfig and header file with rpcrdma protocol definitions\"Talpey, Thomas\1-0/+116
This file implements the configuration target, protocol template and constants for the rpcrdma transport framing, for use by the xprtrdma rpc transport implementation. Signed-off-by: Tom Talpey <talpey@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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