kernel_optimize_test/include/rdma
Hefty, Sean a9bb79128a RDMA/cma: Add an ID_REUSEADDR option
Lustre requires that clients bind to a privileged port number before
connecting to a remote server.  On larger clusters (typically more
than about 1000 nodes), the number of privileged ports is exhausted,
resulting in lustre being unusable.

To handle this, we add support for reusable addresses to the rdma_cm.
This mimics the behavior of the socket option SO_REUSEADDR.  A user
may set an rdma_cm_id to reuse an address before calling
rdma_bind_addr() (explicitly or implicitly).  If set, other
rdma_cm_id's may be bound to the same address, provided that they all
have reuse enabled, and there are no active listens.

If rdma_listen() is called on an rdma_cm_id that has reuse enabled, it
will only succeed if there are no other id's bound to that same
address.  The reuse option is exported to user space.  The behavior of
the kernel reuse implementation was verified against that given by
sockets.

This patch is derived from a path by Ira Weiny <weiny2@llnl.gov>

Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-05-09 22:06:10 -07:00
..
ib_addr.h IB/core: Add VLAN support for IBoE 2010-10-25 10:20:39 -07:00
ib_cache.h RDMA: Improve include file coding style 2008-07-14 23:48:44 -07:00
ib_cm.h trivial: fix typo "to to" in multiple files 2009-09-21 15:14:55 +02:00
ib_fmr_pool.h RDMA: Improve include file coding style 2008-07-14 23:48:44 -07:00
ib_mad.h Merge branches 'cxgb3', 'endian', 'ipath', 'ipoib', 'iser', 'mad', 'misc', 'mlx4', 'mthca', 'nes' and 'sysfs' into for-next 2009-03-24 20:44:41 -07:00
ib_marshall.h RDMA/cma: Export rdma cm interface to userspace 2006-12-12 11:50:22 -08:00
ib_pack.h IB/core: Add VLAN support for IBoE 2010-10-25 10:20:39 -07:00
ib_sa.h RDMA/ucma: Add option to manually set IB path 2009-11-16 09:30:33 -08:00
ib_smi.h IB: Remove __constant_{endian} uses 2009-01-17 17:11:57 -08:00
ib_umem.h IB: expand ib_umem_get() prototype 2008-04-29 08:06:12 -07:00
ib_user_cm.h RDMA: Improve include file coding style 2008-07-14 23:48:44 -07:00
ib_user_mad.h RDMA: Improve include file coding style 2008-07-14 23:48:44 -07:00
ib_user_sa.h RDMA/ucma: Add option to manually set IB path 2009-11-16 09:30:33 -08:00
ib_user_verbs.h IB/uverbs: Return link layer type to userspace for query port operation 2010-10-25 10:20:39 -07:00
ib_verbs.h RDMA: Update workqueue usage 2011-01-16 21:16:31 -08:00
iw_cm.h RDMA: Improve include file coding style 2008-07-14 23:48:44 -07:00
Kbuild
rdma_cm_ib.h RDMA: Fix license text 2008-07-14 23:48:43 -07:00
rdma_cm.h RDMA/cma: Add an ID_REUSEADDR option 2011-05-09 22:06:10 -07:00
rdma_user_cm.h RDMA/cma: Add an ID_REUSEADDR option 2011-05-09 22:06:10 -07:00