linux/net/sunrpc
Tom Tucker b334eaabf4 RPC/RDMA: fix connection IRD/ORD setting
This logic sets the connection parameter that configures the local device
and informs the remote peer how many concurrent incoming RDMA_READ
requests are supported. The original logic didn't really do what was
intended for two reasons:

- The max number supported by the device is typically smaller than
any one factor in the calculation used, and

- The field in the connection parameter structure where the value is
stored is a u8 and always overflows for the default settings.

So what really happens is the value requested for responder resources
is the left over 8 bits from the "desired value". If the desired value
happened to be a multiple of 256, the result was zero and it wouldn't
connect at all.

Given the above and the fact that max_requests is almost always larger
than the max responder resources supported by the adapter, this patch
simplifies this logic and simply requests the max supported by the device,
subject to a reasonable limit.

This bug was found by Jim Schutt at Sandia.

Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
Acked-by: Tom Talpey <talpey@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-10 15:09:56 -04:00
..
auth_gss Merge branch 'for-2.6.27' of git://linux-nfs.org/~bfields/linux 2008-07-20 21:21:46 -07:00
xprtrdma RPC/RDMA: fix connection IRD/ORD setting 2008-10-10 15:09:56 -04:00
auth_generic.c SUNRPC: AUTH_SYS "machine creds" shouldn't use negative valued uid/gid 2008-05-18 14:18:27 -04:00
auth_null.c NFSv4: Don't use cred->cr_ops->cr_name in nfs4_proc_setclientid() 2008-04-19 16:54:53 -04:00
auth_unix.c SUNRPC: Use GFP_NOFS when allocating credentials 2008-07-09 12:08:48 -04:00
auth.c SUNRPC: Protect creds against early garbage collection 2008-04-19 16:55:02 -04:00
cache.c sunrpc: assign PDE->data before gluing PDE into /proc tree 2008-05-02 02:44:36 -07:00
clnt.c sunrpc: fix oops in rpc_create when the mount namespace is unshared 2008-10-07 18:19:10 -04:00
Makefile SUNRPC: Add a generic RPC credential 2008-03-14 13:42:38 -04:00
rpc_pipe.c SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
rpcb_clnt.c SUNRPC: Fix a memory leak in rpcb_getport_async 2008-10-07 18:18:57 -04:00
sched.c SUNRPC: Remove the BKL from the callback functions 2008-07-15 18:10:57 -04:00
socklib.c SUNRPC: temp var should match return type of xdr_skb_read_actor 2008-01-30 02:05:43 -05:00
stats.c sunrpc: assign PDE->data before gluing PDE into /proc tree 2008-05-02 02:44:36 -07:00
sunrpc_syms.c SUNRPC: Move exported symbol definitions after function declaration part 2 2008-02-01 17:01:24 -05:00
svc_xprt.c svc: Remove unused header files from svc_xprt.c 2008-05-19 07:33:42 -05:00
svc.c cpumask: change cpumask_of_cpu_ptr to use new cpumask_of_cpu 2008-07-26 16:40:33 +02:00
svcauth_unix.c svcrpc: fix proc/net/rpc/auth.unix.ip/content display 2008-05-18 19:13:07 -04:00
svcauth.c SUNRPC: Move exported symbol definitions after function declaration part 2 2008-02-01 17:01:24 -05:00
svcsock.c SUNRPC: Update RPC server's TCP record marker decoder 2008-04-23 16:13:43 -04:00
sysctl.c sunrpc: fix possible overrun on read of /proc/sys/sunrpc/transports 2008-09-01 14:24:24 -04:00
timer.c SUNRPC: add EXPORT_SYMBOL_GPL for generic transport functions 2007-10-09 17:17:36 -04:00
xdr.c SUNRPC: don't call flush_dcache_page() with an invalid pointer 2008-04-08 21:06:50 -04:00
xprt.c sunrpc: do not pin sunrpc module in the memory 2008-10-07 18:14:54 -04:00
xprtsock.c SUNRPC: Ensure all transports set rq_xtime consistently 2008-07-09 12:09:15 -04:00