linux-stable.git/include/linux/sunrpc/xprt.h, branch v5.3.2

SUNRPC: Fix up backchannel slot table accounting

2019-07-18T05:12:59+00:00

Add a per-transport maximum limit in the socket case, and add
helpers to allow the NFSv4 code to discover that limit.

Signed-off-by: Trond Myklebust

Merge tag 'nfs-rdma-for-5.3-1' of git://git.linux-nfs.org/projects/anna/linux-nfs

2019-07-12T16:11:01+00:00

NFSoRDMA client updates for 5.3

New features:
- Add a way to place MRs back on the free list
- Reduce context switching
- Add new trace events

Bugfixes and cleanups:
- Fix a BUG when tracing is enabled with NFSv4.1
- Fix a use-after-free in rpcrdma_post_recvs
- Replace use of xdr_stream_pos in rpcrdma_marshal_req
- Fix occasional transport deadlock
- Fix show_nfs_errors macros, other tracing improvements
- Remove RPCRDMA_REQ_F_PENDING and fr_state
- Various simplifications and refactors

xprtrdma: Modernize ops->connect

2019-07-09T14:30:25+00:00

Adapt and apply changes that were made to the TCP socket connect
code. See the following commits for details on the purpose of
these changes:

Commit 7196dbb02ea0 ("SUNRPC: Allow changing of the TCP timeout parameters on the fly")
Commit 3851f1cdb2b8 ("SUNRPC: Limit the reconnect backoff timer to the max RPC message timeout")
Commit 02910177aede ("SUNRPC: Fix reconnection timeouts")

Some common transport code is moved to xprt.c to satisfy the code
duplication police.

Signed-off-by: Chuck Lever 
Signed-off-by: Anna Schumaker

SUNRPC: Add basic load balancing to the transport switch

2019-07-06T18:54:49+00:00

For now, just count the queue length. It is less accurate than counting
number of bytes queued, but easier to implement.

Signed-off-by: Trond Myklebust

SUNRPC: Refactor xprt_request_wait_receive()

2019-04-25T18:18:12+00:00

Convert the transport callback to actually put the request to sleep
instead of just setting a timeout. This is in preparation for
rpc_sleep_on_timeout().

Signed-off-by: Trond Myklebust 
Signed-off-by: Anna Schumaker

SUNRPC: Remove rpc_xprt::tsh_size

2019-02-13T18:14:35+00:00

tsh_size was added to accommodate transports that send a pre-amble
before each RPC message. However, this assumes the pre-amble is
fixed in size, which isn't true for some transports. That makes
tsh_size not very generic.

Also I'd like to make the estimation of RPC send and receive
buffer sizes more precise. tsh_size doesn't currently appear to be
accounted for at all by call_allocate.

Therefore let's just remove the tsh_size concept, and make the only
transports that have a non-zero tsh_size employ a direct approach.

Signed-off-by: Chuck Lever 
Signed-off-by: Anna Schumaker

sunrpc: remove unused bc_up operation from rpc_xprt_ops

2018-12-28T02:01:41+00:00

Signed-off-by: Vasily Averin 
Signed-off-by: J. Bruce Fields

SUNRPC: Add a bvec array to struct xdr_buf for use with iovec_iter()

2018-09-30T19:35:16+00:00

Add a bvec array to struct xdr_buf, and have the client allocate it
when we need to receive data into pages.

Signed-off-by: Trond Myklebust

SUNRPC: Convert xprt receive queue to use an rbtree

2018-09-30T19:35:16+00:00

If the server is slow, we can find ourselves with quite a lot of entries
on the receive queue. Converting the search from an O(n) to O(log(n))
can make a significant difference, particularly since we have to hold
a number of locks while searching.

Signed-off-by: Trond Myklebust

SUNRPC: Cleanup: remove the unused 'task' argument from the request_send()

2018-09-30T19:35:16+00:00

Signed-off-by: Trond Myklebust