linux.git/include/linux/sunrpc/svcsock.h, branch v2.6.31

Merge branch 'for-2.6.31' of git://fieldses.org/git/linux-nfsd

2009-06-22T19:55:50+00:00

* 'for-2.6.31' of git://fieldses.org/git/linux-nfsd: (60 commits)
  SUNRPC: Fix the TCP server's send buffer accounting
  nfsd41: Backchannel: minorversion support for the back channel
  nfsd41: Backchannel: cleanup nfs4.0 callback encode routines
  nfsd41: Remove ip address collision detection case
  nfsd: optimise the starting of zero threads when none are running.
  nfsd: don't take nfsd_mutex twice when setting number of threads.
  nfsd41: sanity check client drc maxreqs
  nfsd41: move channel attributes from nfsd4_session to a nfsd4_channel_attr struct
  NFS: kill off complicated macro 'PROC'
  sunrpc: potential memory leak in function rdma_read_xdr
  nfsd: minor nfsd_vfs_write cleanup
  nfsd: Pull write-gathering code out of nfsd_vfs_write
  nfsd: track last inode only in use_wgather case
  sunrpc: align cache_clean work's timer
  nfsd: Use write gathering only with NFSv2
  NFSv4: kill off complicated macro 'PROC'
  NFSv4: do exact check about attribute specified
  knfsd: remove unreported filehandle stats counters
  knfsd: fix reply cache memory corruption
  knfsd: reply cache cleanups
  ...

nfs41: sunrpc: provide functions to create and destroy a svc_xprt for backchannel use

2009-06-17T21:11:30+00:00

For nfs41 callbacks we need an svc_xprt to process requests coming up the
backchannel socket as rpc_rqst's that are transformed into svc_rqst's that
need a rq_xprt to be processed.

The svc_{udp,tcp}_create methods are too heavy for this job as svc_create_socket
creates an actual socket to listen on while for nfs41 we're "reusing" the
fore channel's socket.

Signed-off-by: Benny Halevy

SUNRPC: pass buffer size to svc_sock_names()

2009-04-28T17:54:28+00:00

Adjust the synopsis of svc_sock_names() to pass in the size of the
output buffer.  Add a documenting comment.

This is a cosmetic change for now.  A subsequent patch will make sure
the buffer length is passed to one_sock_name(), where the length will
actually be useful.

Signed-off-by: Chuck Lever 
Signed-off-by: J. Bruce Fields

SUNRPC: pass buffer size to svc_addsock()

2009-04-28T17:54:28+00:00

Adjust the synopsis of svc_addsock() to pass in the size of the output
buffer.  Add a documenting comment.

This is a cosmetic change for now.  A subsequent patch will make sure
the buffer length is passed to one_sock_name(), where the length will
actually be useful.

Signed-off-by: Chuck Lever 
Signed-off-by: J. Bruce Fields

NLM: Remove unused argument from svc_addsock() function

2008-10-04T21:12:27+00:00

Clean up: The svc_addsock() function no longer uses its "proto"
argument, so remove it.

Signed-off-by: Chuck Lever 
Cc: Neil Brown 
Signed-off-by: J. Bruce Fields

SUNRPC: Update RPC server's TCP record marker decoder

2008-04-23T20:13:43+00:00

Clean up: Update the RPC server's TCP record marker decoder to match the
constructs used by the RPC client's TCP socket transport.

Signed-off-by: Chuck Lever 
Signed-off-by: J. Bruce Fields

svc: Move the sockaddr information to svc_xprt

2008-02-01T21:42:12+00:00

This patch moves the transport sockaddr to the svc_xprt
structure.  Convenience functions are added to set and
get the local and remote addresses of a transport from
the transport provider as well as determine the length
of a sockaddr.

A transport is responsible for setting the xpt_local
and xpt_remote addresses in the svc_xprt structure as
part of transport creation and xpo_accept processing. This
cannot be done in a generic way and in fact varies
between TCP, UDP and RDMA. A set of xpo_ functions
(e.g. getlocalname, getremotename) could have been
added but this would have resulted in additional
caching and copying of the addresses around.  Note that
the xpt_local address should also be set on listening
endpoints; for TCP/RDMA this is done as part of
endpoint creation.

For connected transports like TCP and RDMA, the addresses
never change and can be set once and copied into the
rqstp structure for each request. For UDP, however, the
local and remote addresses may change for each request. In
this case, the address information is obtained from the
UDP recvmsg info and copied into the rqstp structure from
there.

A svc_xprt_local_port function was also added that returns
the local port given a transport. This is used by
svc_create_xprt when returning the port associated with
a newly created transport, and later when creating a
generic find transport service to check if a service is
already listening on a given port.

Signed-off-by: Tom Tucker 
Acked-by: Neil Brown 
Reviewed-by: Chuck Lever 
Reviewed-by: Greg Banks 
Signed-off-by: J. Bruce Fields

svc: Make deferral processing xprt independent

2008-02-01T21:42:12+00:00

This patch moves the transport independent sk_deferred list to the svc_xprt
structure and updates the svc_deferred_req structure to keep pointers to
svc_xprt's directly. The deferral processing code is also moved out of the
transport dependent recvfrom functions and into the generic svc_recv path.

Signed-off-by: Tom Tucker 
Acked-by: Neil Brown 
Reviewed-by: Chuck Lever 
Reviewed-by: Greg Banks 
Signed-off-by: J. Bruce Fields

svc: Move the authinfo cache to svc_xprt.

2008-02-01T21:42:12+00:00

Move the authinfo cache to svc_xprt. This allows both the TCP and RDMA
transports to share this logic. A flag bit is used to determine if
auth information is to be cached or not. Previously, this code looked
at the transport protocol.

I've also changed the spin_lock/unlock logic so that a lock is not taken for
transports that are not caching auth info.

Signed-off-by: Tom Tucker 
Acked-by: Neil Brown 
Reviewed-by: Chuck Lever 
Reviewed-by: Greg Banks 
Signed-off-by: J. Bruce Fields

svc: Remove sk_lastrecv

2008-02-01T21:42:12+00:00

With the implementation of the new mark and sweep algorithm for shutting
down old connections, the sk_lastrecv field is no longer needed.

Signed-off-by: Tom Tucker 
Acked-by: Neil Brown 
Reviewed-by: Chuck Lever 
Reviewed-by: Greg Banks 
Signed-off-by: J. Bruce Fields