linux-stable.git/include/linux/sunrpc/xprt.h, branch v3.2.77

SUNRPC: Fix a UDP transport regression

2012-09-19T14:05:17+00:00

commit f39c1bfb5a03e2d255451bff05be0d7255298fa4 upstream.

Commit 43cedbf0e8dfb9c5610eb7985d5f21263e313802 (SUNRPC: Ensure that
we grab the XPRT_LOCK before calling xprt_alloc_slot) is causing
hangs in the case of NFS over UDP mounts.

Since neither the UDP or the RDMA transport mechanism use dynamic slot
allocation, we can skip grabbing the socket lock for those transports.
Add a new rpc_xprt_op to allow switching between the TCP and UDP/RDMA
case.

Note that the NFSv4.1 back channel assigns the slot directly
through rpc_run_bc_task, so we can ignore that case.

Reported-by: Dick Streefland 
Signed-off-by: Trond Myklebust 
Signed-off-by: Ben Hutchings

SUNRPC: Replace xprt->resend and xprt->sending with a priority queue

2011-07-17T22:11:34+00:00

Signed-off-by: Trond Myklebust

SUNRPC: Support dynamic slot allocation for TCP connections

2011-07-17T22:11:30+00:00

Allow the number of available slots to grow with the TCP window size.

Signed-off-by: Trond Myklebust

SUNRPC: Clean up the slot table allocation

2011-07-17T20:57:32+00:00

Signed-off-by: Trond Myklebust

SUNRPC: Ensure that we grab the XPRT_LOCK before calling xprt_alloc_slot

2011-07-17T20:01:03+00:00

This throttles the allocation of new slots when the socket is busy
reconnecting and/or is out of buffer space.

Signed-off-by: Trond Myklebust

SUNRPC: sunrpc should not explicitly depend on NFS config options

2011-07-15T13:12:23+00:00

Change explicit references to CONFIG_NFS_V4_1 to implicit ones
Get rid of the unnecessary defines in backchannel_rqst.c and
bc_svc.c: the Makefile takes care of those dependency.

Signed-off-by: Trond Myklebust

SUNRPC: Support for RPC over AF_LOCAL transports

2011-05-27T21:42:47+00:00

TI-RPC introduces the capability of performing RPC over AF_LOCAL
sockets.  It uses this mainly for registering and unregistering
local RPC services securely with the local rpcbind, but we could
also conceivably use it as a generic upcall mechanism.

This patch provides a client-side only implementation for the moment.
We might also consider a server-side implementation to provide
AF_LOCAL access to NLM (for statd downcalls, and such like).

Autobinding is not supported on kernel AF_LOCAL transports at this
time.  Kernel ULPs must specify the pathname of the remote endpoint
when an AF_LOCAL transport is created.  rpcbind supports registering
services available via AF_LOCAL, so the kernel could handle it with
some adjustment to ->rpcbind and ->set_port.  But we don't need this
feature for doing upcalls via well-known named sockets.

This has not been tested with ULPs that move a substantial amount of
data.  Thus, I can't attest to how robust the write_space and
congestion management logic is.

Signed-off-by: Chuck Lever 
Signed-off-by: Trond Myklebust

SUNRPC: Convert struct rpc_xprt to use atomic_t counters

2011-03-17T16:38:59+00:00

Signed-off-by: Trond Myklebust

rpc: allow xprt_class->setup to return a preexisting xprt

2011-01-11T20:04:10+00:00

This allows us to reuse the xprt associated with a server connection if
one has already been set up.

Signed-off-by: J. Bruce Fields

sunrpc: Tag rpc_xprt with net

2010-10-01T21:18:58+00:00

The net is known from the xprt_create and this tagging will also
give un the context in the conntection workers where real sockets
are created.

Signed-off-by: Pavel Emelyanov 
Signed-off-by: J. Bruce Fields