linux.git/include/linux/sunrpc/clnt.h, branch v6.1

SUNRPC: Add API to force the client to disconnect

2022-10-06T13:52:09+00:00

Allow the caller to force a disconnection of the RPC client so that we
can clear any pending requests that are buffered in the socket.

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

SUNRPC create a function that probes only offline transports

2022-07-25T14:06:04+00:00

For only offline transports, attempt to check connectivity via
a NULL call and, if that succeeds, call a provided session trunking
detection function.

Signed-off-by: Olga Kornievskaia 
Signed-off-by: Trond Myklebust

SUNRPC create an rpc function that allows xprt removal from rpc_clnt

2022-07-25T14:06:04+00:00

Expose a function that allows a removal of xprt from the rpc_clnt.

When called from NFS that's running a trunked transport then don't
decrement the active transport counter.

Signed-off-by: Olga Kornievskaia 
Signed-off-by: Trond Myklebust

SUNRPC enable back offline transports in trunking discovery

2022-07-25T14:06:04+00:00

When we are adding a transport to a xprt_switch that's already on
the list but has been marked OFFLINE, then make the state ONLINE
since it's been tested now.

Signed-off-by: Olga Kornievskaia 
Signed-off-by: Trond Myklebust

SUNRPC add function to offline remove trunkable transports

2022-07-25T14:06:04+00:00

Iterate thru available transports in the xprt_switch for all
trunkable transports offline and possibly remote them as well.

Signed-off-by: Olga Kornievskaia 
Signed-off-by: Trond Myklebust

SUNRPC: Ensure that the gssproxy client can start in a connected state

2022-05-07T18:31:15+00:00

Ensure that the gssproxy client connects to the server from the gssproxy
daemon process context so that the AF_LOCAL socket connection is done
using the correct path and namespaces.

Fixes: 1d658336b05f ("SUNRPC: Add RPC based upcall mechanism for RPCGSS auth")
Cc: stable@vger.kernel.org
Signed-off-by: Trond Myklebust

Revert "SUNRPC: Ensure gss-proxy connects on setup"

2022-05-07T18:30:40+00:00

This reverts commit 892de36fd4a98fab3298d417c051d9099af5448d.

The gssproxy server is unresponsive when it calls into the kernel to
start the upcall service, so it will not reply to our RPC ping at all.

Reported-by: "J.Bruce Fields" 
Fixes: 892de36fd4a9 ("SUNRPC: Ensure gss-proxy connects on setup")
Signed-off-by: Trond Myklebust

SUNRPC: Ensure gss-proxy connects on setup

2022-04-29T16:29:31+00:00

For reasons best known to the author, gss-proxy does not implement a
NULL procedure, and returns RPC_PROC_UNAVAIL. However we still want to
ensure that we connect to the service at setup time.
So add a quirk-flag specially for this case.

Fixes: 1d658336b05f ("SUNRPC: Add RPC based upcall mechanism for RPCGSS auth")
Cc: stable@vger.kernel.org
Signed-off-by: Trond Myklebust

SUNRPC: Per-rpc_clnt task PIDs

2021-10-10T09:05:54+00:00

The current range of RPC task PIDs is 0..65535. That's not adequate
for distinguishing tasks across multiple rpc_clnts running high
throughput workloads.

To help relieve this situation and to reduce the bottleneck of
having a single atomic for assigning all RPC task PIDs, assign task
PIDs per rpc_clnt.

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

SUNRPC enforce creation of no more than max_connect xprts

2021-08-27T20:37:29+00:00

If we are adding new transports via rpc_clnt_test_and_add_xprt()
then check if we've reached the limit. Currently only pnfs path
adds transports via that function but this is done in
preparation when the client would add new transports when
session trunking is detected. A warning is logged if the
limit is reached.

Signed-off-by: Olga Kornievskaia 
Signed-off-by: Anna Schumaker