kernel/linux.git/include/linux/sunrpc/xprt.h, branch v6.12.80

SUNRPC: Add a transport callback to handle dequeuing of an RPC request

2024-02-28T20:00:14+00:00

Add a transport level callback to allow it to handle the consequences of dequeuing the request that was in the process of being transmitted. For something like a TCP connection, we may need to disconnect if the request was partially transmitted. Signed-off-by: Trond Myklebust

NFSv4.1: Use the nfs_client's rpc timeouts for backchannel

2024-01-04T22:01:01+00:00

For backchannel requests that lookup the appropriate nfs_client, use the state-management rpc_clnt's rpc_timeout parameters for the backchannel's response. When the nfs_client cannot be found, fall back to using the xprt's default timeout parameters. Signed-off-by: Benjamin Coddington Tested-by: Chuck Lever Tested-by: Jeff Layton Signed-off-by: Anna Schumaker

SUNRPC: change the back-channel queue to lwq

2023-10-16T16:44:08+00:00

This removes the need to store and update back-links in the list. It also remove the need for the _bh version of spin_lock(). Signed-off-by: NeilBrown Cc: Trond Myklebust Cc: Anna Schumaker Signed-off-by: Chuck Lever

SUNRPC: Allow specification of TCP client connect timeout at setup

2023-08-24T17:24:15+00:00

When we create a TCP transport, the connect timeout parameters are currently fixed to be 90s. This is problematic in the pNFS flexfiles case, where we may have multiple mirrors, and we would like to fail over quickly to the next mirror if a data server is down. This patch adds the ability to specify the connection parameters at RPC client creation time. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker

SUNRPC: Add a TCP-with-TLS RPC transport class

2023-06-19T16:28:10+00:00

Use the new TLS handshake API to enable the SunRPC client code to request a TLS handshake. This implements support for RFC 9289, only on TCP sockets. Upper layers such as NFS use RPC-with-TLS to protect in-transit traffic. Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust

SUNRPC: Plumb an API for setting transport layer security

2023-06-19T16:16:59+00:00

Add an initial set of policies along with fields for upper layers to pass the requested policy down to the transport layer. Signed-off-by: Chuck Lever Reviewed-by: Jeff Layton Signed-off-by: Trond Myklebust

SUNRPC: Don't reuse bvec on retransmission of the request

2022-07-27T20:26:17+00:00

If a request is re-encoded and then retransmitted, we need to make sure that we also re-encode the bvec, in case the page lists have changed. Fixes: ff053dbbaffe ("SUNRPC: Move the call to xprt_send_pagedata() out of xprt_sock_sendmsg()") Signed-off-by: Trond Myklebust

SUNRPC expose functions for offline remote xprt functionality

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

Re-arrange the code that make offline transport and delete transport callable functions. Signed-off-by: Olga Kornievskaia Signed-off-by: Trond Myklebust

Merge tag 'nfs-for-5.18-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

2022-04-08T17:39:17+00:00

Pull NFS client fixes from Trond Myklebust: "Stable fixes: - SUNRPC: Ensure we flush any closed sockets before xs_xprt_free() Bugfixes: - Fix an Oopsable condition due to SLAB_ACCOUNT setting in the NFSv4.2 xattr code. - Fix for open() using an file open mode of '3' in NFSv4 - Replace readdir's use of xxhash() with hash_64() - Several patches to handle malloc() failure in SUNRPC" * tag 'nfs-for-5.18-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: SUNRPC: Move the call to xprt_send_pagedata() out of xprt_sock_sendmsg() SUNRPC: svc_tcp_sendmsg() should handle errors from xdr_alloc_bvec() SUNRPC: Handle allocation failure in rpc_new_task() NFS: Ensure rpc_run_task() cannot fail in nfs_async_rename() NFSv4/pnfs: Handle RPC allocation errors in nfs4_proc_layoutget SUNRPC: Handle low memory situations in call_status() SUNRPC: Handle ENOMEM in call_transmit_status() NFSv4.2: Fix missing removal of SLAB_ACCOUNT on kmem_cache allocation SUNRPC: Ensure we flush any closed sockets before xs_xprt_free() NFS: Replace readdir's use of xxhash() with hash_64() SUNRPC: handle malloc failure in ->request_prepare NFSv4: fix open failure with O_ACCMODE flag Revert "NFSv4: Handle the special Linux file open access mode"

SUNRPC: handle malloc failure in ->request_prepare

2022-03-30T02:15:46+00:00

If ->request_prepare() detects an error, it sets ->rq_task->tk_status. This is easy for callers to ignore. The only caller is xprt_request_enqueue_receive() and it does ignore the error, as does call_encode() which calls it. This can result in a request being queued to receive a reply without an allocated receive buffer. So instead of setting rq_task->tk_status, return an error, and store in ->tk_status only in call_encode(); The call to xprt_request_enqueue_receive() is now earlier in call_encode(), where the error can still be handled. Signed-off-by: NeilBrown Signed-off-by: Trond Myklebust