kernel/linux.git/include/linux/sunrpc/rpc_rdma.h, branch v6.12.80

svcrdma: Add common XDR encoders for RDMA and Read segments

2020-07-13T21:28:24+00:00

Clean up: De-duplicate some code. Signed-off-by: Chuck Lever

svcrdma: Add common XDR decoders for RDMA and Read segments

2020-07-13T21:28:24+00:00

Clean up: De-duplicate some code. Signed-off-by: Chuck Lever

svcrdma: Use struct xdr_stream to decode ingress transport headers

2020-03-16T16:04:32+00:00

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

xprtrdma: Add proper SPDX tags for NetApp-contributed source

2018-05-07T13:20:03+00:00

Signed-off-by: Chuck Lever Signed-off-by: Anna Schumaker

xprtrdma: Update copyright notices

2017-11-17T21:43:43+00:00

Credit work contributed by Oracle engineers since 2014. Signed-off-by: Chuck Lever Signed-off-by: Anna Schumaker

rpcrdma: Remove C structure definitions of XDR data items

2017-11-17T21:43:42+00:00

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 Reviewed-by: Devesh Sharma Signed-off-by: Anna Schumaker

svcrdma: Clean up RDMA_ERROR path

2017-04-25T21:25:55+00:00

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 Reviewed-by: Sagi Grimberg Signed-off-by: J. Bruce Fields

svcrdma: Another sendto chunk list parsing update

2017-02-08T19:41:24+00:00

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 Reviewed-by: Christoph Hellwig Signed-off-by: J. Bruce Fields

xprtrdma: Client-side support for rpcrdma_connect_private

2016-09-19T17:08:38+00:00

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 Signed-off-by: Anna Schumaker

rpcrdma: RDMA/CM private message data structure

2016-09-19T17:08:38+00:00

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 Reviewed-by: Sagi Grimberg Signed-off-by: Anna Schumaker