linux-toradex.git/include/linux/sunrpc/xprt.h, branch v2.6.26-rc5

SUNRPC: Don't disconnect more than once if retransmitting NFSv4 requests

2008-04-19T20:55:12+00:00

NFSv4 requires us to ensure that we break the TCP connection before we're
allowed to retransmit a request. However in the case where we're
retransmitting several requests that have been sent on the same
connection, we need to ensure that we don't interfere with the attempt to
reconnect and/or break the connection again once it has been established.

We therefore introduce a 'connection' cookie that is bumped every time a
connection is broken. This allows requests to track if they need to force a
disconnection.

Signed-off-by: Trond Myklebust

SUNRPC: Fix up xprt_write_space()

2008-04-19T20:52:44+00:00

The rest of the networking layer uses SOCK_ASYNC_NOSPACE to signal whether
or not we have someone waiting for buffer memory. Convert the SUNRPC layer
to use the same idiom.
Remove the unlikely()s in xs_udp_write_space and xs_tcp_write_space. In
fact, the most common case will be that there is nobody waiting for buffer
space.

SOCK_NOSPACE is there to tell the TCP layer whether or not the cwnd was
limited by the application window. Ensure that we follow the same idiom as
the rest of the networking layer here too.

Finally, ensure that we clear SOCK_ASYNC_NOSPACE once we wake up, so that
write_space() doesn't keep waking things up on xprt->pending.

Signed-off-by: Trond Myklebust

SUNRPC: fewer conditionals in the format_ip_address routines

2008-01-30T07:06:04+00:00

Clean up: have the set up routines explicitly pass the strings to be used
for the transport name and NETID.  This removes a number of conditionals
and dependencies on rpc_xprt.prot, which is overloaded.

Tighten up type checking on the address_strings array while we're at it.

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

SUNRPC: Add support for per-client timeout values

2008-01-30T07:05:59+00:00

In order to be able to support setting the timeo and retrans parameters on
a per-mountpoint basis, we move the rpc_timeout structure into the
rpc_clnt.

Signed-off-by: Trond Myklebust

SUNRPC: Clean up the transport timeout initialisation

2008-01-30T07:05:58+00:00

Signed-off-by: Trond Myklebust

SUNRPC: Rename xprt_disconnect()

2008-01-30T07:05:27+00:00

xprt_disconnect() should really only be called when the transport shutdown
is completed, and it is time to wake up any pending tasks. Rename it to
xprt_disconnect_done() in order to reflect the semantical change.

Signed-off-by: Trond Myklebust

SUNRPC: Allow the client to detect if the TCP connection is closed

2008-01-30T07:05:25+00:00

Add an xprt->state bit to enable the TCP ->state_change() method to signal
whether or not the TCP connection is in the process of closing down.
This will to be used by the reconnection logic in a separate patch.

Signed-off-by: Trond Myklebust

SUNRPC: Fix a race in xs_tcp_state_change()

2008-01-30T07:05:24+00:00

When scheduling the autoclose RPC call, we want to ensure that we don't
race against the test_bit() call in xprt_clear_locked().

Signed-off-by: Trond Myklebust

NFS/SUNRPC: support transport protocol naming

2007-10-09T21:17:50+00:00

To prepare for including non-sockets-based RPC transports, select
RPC transports by an identifier (to be used in following patches).

Signed-off-by: Tom Talpey 
Signed-off-by: Trond Myklebust

SUNRPC: rearrange RPC sockets definitions

2007-10-09T21:17:48+00:00

To prepare for including non-sockets-based RPC transports, move the
sockets-dependent definitions into their own file.

Signed-off-by: Tom Talpey 
Signed-off-by: Trond Myklebust