CVS log for pvfs2/src/io/bmi/bmi-method-support.h
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Merged in changes from Orange-Branch. There were a number of bugs fixed there since this branch was created.

merging Orange Branch changes in

initial merge with Orange-Branch. much will be broken

merge of B2O-Blue-Sync,HEAD,and latest of Orange.

merging bmi-experimental-branch to trunk

commiting changes from merge of Orange and Blue into test branch.

merge from HEAD: http://www.pvfs.org/fisheye/changelog/PVFS/?cs=MAIN:pcarns:20090930154442

merging in "no polling" flag support from trunk to bmi-experimental-branch

Add a flags field to bmi method ops structure.  BMI_METHOD_FLAG_NO_POLLING
can be used to disable implicit busy polling on a particular BMI method.

merged in changes from summer at LANL

implement class support in bmi_tcp; change magic number, correct header size
that should have been updated in previous commit

Add yet another argument in the unexpected functions.  The "class" will be
used to differentiate different classes of unexpected messages that arrive
at the same host but destined for separate components.  Default API is
unchanged and assumes PVFS uses class value 0.  No method support yet.

Drop non-list versions of send, recv, and sendunexpected from the method api
(but leave in the BMI api for now).  Only implemented for tcp for now, need
to update other methods.

merge tcp fixes for simultaneous peer connections into bmi experimental
branch

Merged Phil's tcp-peer-comm-branch that allows simultaneous server to server communications.
Added basic allreduce module:
  - implemented a recursive distance doubling algorithm.
  - works only when the # of servers are power of 2.
  - when activated, servers simply exchange their id to each other.

TODO
  - handle arbitrary sizes of buffers of various data types.

implement handling of second simultaneous connection case, in which an
incoming connection appears after the host addr has been resolved.  Works
for basic cases, but needs additional cleanup logic.

handle case in which incoming connection is established prior to address
lookup

merging hints/events code into trunk.

reverse merge from HEAD.

reverse merge of changes to HEAD since branch.  Includes small file changes.

merge trunk updates down to small-file-branch.  Passes basic tests but needs
some double checking of pint-cached-config and sys-create conflicts.

experimental fixes to some bmi address mgmt performance problems:
- Search by addr now uses existing id_gen_t field rather than scanning
  linked list.  Switched to id_gen_safe* to remain safe in case we search
  for an addr that has been destroyed.
- Search by method addr now uses a back pointer to parent addr structure rather
  than scanning linked list.

Reverse merged and ported to HEAD.

hints and events.

merge a bunch of fixes made to HEAD since 2.7.0.

Sam's prelude and scheduler updates

Remove nearly unused typedef.

Remove unused ops pointer from method addr structure.

bmi cleanups.

Move private method parameters structures to their respective methods.

Remove unused method_addr field.

Added BMI load to bmi-tcp module

Update migration branch to current CVS version

reverse merge of HEAD to WALT3 branch.

backmerging of HEAD to branch...

Merge HEAD into Walt's branch.
Rework new state machines to the new cleanups introduced by Walt.

fix spacing from confused indent script

Merge from HEAD to posix-extensions-branch...
This should facilitate merging the posix branch to HEAD...

Implement root squash, read only and all squash export options. All of these are server-side
settings and set in the fs.conf files.. Perhaps the docs need to be pushed out to the pvfs.org website
after this check in?
Wild cards and mask-based addresses are allowed as part of the fs.conf export settings..

Also added a mount time option to honor setuid bit in files, mount -o suid...

Removed the -c option from pvfs2-ping and made the config file checks default.

Reverse merges from HEAD..

Backmerge with HEAD

Added bmi unexpected free callbacks to tcp, gm and ib to indicate when unexpected buffers
are done. All they do right now in these methods is to free these buffers.
Move the call to bmi_unexpected_free() earlier (right after the decode is done)
Cleaned up test programs and server to use the new api..
Also cleaned up tcp and gm bmi structures to init structures the c standard way..

Reverse merge from trunk to lockd-branch...

reverse merge of branch

reverse merge of trunk to branch

Fixes for the latencies noticed in BMI (by Julian) when the main thread is waiting in the poll/epoll_wait
and another thread indicates that data is ready on another socket which is not being watched.
In the poll case, the fix (suggested by pete) is to create a pipe and add the pipe fd
to the poll set being watched. Adding a socket for watch also sends a 1 byte message over the pipe.
This in turn caused the poll() thread to break out of the poll and cause it to retry with the updated poll
sock set.
For the epoll case it is perfectly safe for the thread adding the socket to the watch list to call
epoll_ctl() directly since the kernel takes care of necessary serialization for that.

updates to my event changes to bring them inline with trunk

merge changes from trunk since branch point into branch.  Effectively moves the branchpoint to the latest trunk.

[pcarns]: add a new bmi method that can resolve connections from unexpected
requests into hostnames

mark const string as such

- applied Nathan's expandtab patch (expandtab-2.patch.gz)

  first referenced at:
  http://www.beowulf-underground.org/pipermail/pvfs2-developers/2004-July/000745.html

cleaned out some old cruft, pointed out by Christoph Kling

- started hacking on a way to let servers release bmi resources for addresses
  that cannot be reconnected; commented out for now until I have more time to
  work on it
- also a bug fix on socket cleanup path, making sure not to call close on a
  socket that is already set to -1

on second thought, handle reference counting at the bmi level rather than
handing it off to individual modules

added bmi hint to reference count addresses; not doing anything with it yet

hooks to start tinkering with a cancel operation function in BMI

Change BMI send functions to accept const buffer pointers.
    Change BMI list functions to promise not to modify the lists themselves.
    Some casts in BMI methods are to stick non-const pointers in const pointer
    storage to permit the use of generic functions for both send and recv.

turned the "bmi_flag_t buffer_flag" variable into a named enumeration
"enum bmi_buffer_type buffer_type"

got rid of PVFS_flag type and bmi_flag_t.  need to come back later and
convert the buffer_flag variables in BMI to named enumerations; they are
ints for now

Consolidated some redundant types in BMI and converted to a named
enumeration.  Required changing the name of the flags passed in to
bmi_memalloc() and bmi_memfree() all over the place, unfortunately.

added magic number check to BMI level message headers in bmi_tcp

cruft removal

whoops- realized that I should probably be nice and hand back a list of
completed ids in testcontext() :)

implemented testcontext() at the BMI multiplexer level; untested; no
module level support yet

implemented context support in bmi_tcp module, except that there is no
test_context() function yet...

contexts are now handled correctly at the bmi multiplexing level; still
not doing anything with them at the modules level

started putting hooks in place to pass context information down to the
module level in BMI

modified all of the BMI code to fall in line with the code formatting
style that we want to use now.  Used the pvfs2-mangle-in-place-80col.sh
script (teamed up with a find -exec command) to do so.

vim formatting line fixes, using pvfs2fixbadformat.pl.

big changes to various I/O API's- there are no longer any "wait"
functions in the BMI, flow, or request scheduling APIs.  In the
request scheduler case, they have simply been discarded.  In BMI
and flows, the testXXX() functions have been augmented with a
timeout argument so that they may perform the role of the
former waitXXX() functions.

renamed a bunch of files in the bmi subdirectory to use dashes instead
of underscores