From: Tom Tucker <tom@opengridcomputing.com>
Subject: [RFC,PATCH 00/35] SVC Transport Switch
Date: Mon, 01 Oct 2007 14:14:26 -0500
Message-ID: <20071001191426.3250.15371.stgit@dell3.ogc.int>
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Cc: neilb@suse.de, bfields@fieldses.org, gnb@sgi.com
To: nfs@lists.sourceforge.net
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This is rev 2 of the new pluggable transport switch for
RPC servers. This version includes two new patches: one to add a field
for keeping track of a transport specific header that precedes the
RPC header for deferral processing, and one that cleans up some 
left over references to svc_sock in transport independent code.

Also in this patch are bug fixes, whitespace, and style changes based on
reviews from from Neil Brown, Bruce Fields, and Chuck Lever.

Edited text from rev 1 follows:

- The overall design of the switch has been modified to be more similar
  to the client side, e.g.
        - There is a transport class structure svc_xprt_class, and
        - A transport independent structure is manipulated by xprt 
          independent code (svc_xprt)
        - Further consolidation of transport independent logic out of 
          transport providers and into transport independent code.
- Transport independent code has been broken out into a separate file
- Transport independent functions prevously adorned with _sock_ have
  had their names changed, e.g. svc_sock_enqueue
- atomic refcounts have been changed to krefs

I've attempted to organize the patchset such that logical changes are 
clearly reviewable without too much clutter from functionally empty name
changes.  This was somewhat awkward since intermediate patches may look 
ugly/broken/incomplete to some reviewers. This was to avoid losing the
context of a change while keeping each patch a reasonable size.  For example, 
making svc_recv transport independent and moving it to the svc_xprt file 
cannot be done in the same patch without losing the diffs to the svc_recv 
function.

This patchset has had limited testing with TCP/UDP. In this case, the tests 
included connectathon and building the kernel on an NFS mount running on the 
transport switch. 

This patchset is against the 2.6.23-rc8 kernel tree.

-- 
Signed-off-by: Tom Tucker <tom@opengridcomputing.com>

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