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SUNRPC: Add API to force the client to disconnect

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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 <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Trond Myklebust 2022-10-05 15:57:37 -04:00 committed by Anna Schumaker
parent f8423909ec
commit dc4c430485
2 changed files with 15 additions and 0 deletions
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1
include/linux/sunrpc/clnt.h
View File

@ -246,6 +246,7 @@ void rpc_clnt_xprt_switch_remove_xprt(struct rpc_clnt *, struct rpc_xprt *);
bool rpc_clnt_xprt_switch_has_addr(struct rpc_clnt *clnt,
const struct sockaddr *sap);
void rpc_clnt_xprt_set_online(struct rpc_clnt *clnt, struct rpc_xprt *xprt);
void rpc_clnt_disconnect(struct rpc_clnt *clnt);
void rpc_cleanup_clids(void);
static inline int rpc_reply_expected(struct rpc_task *task)

14
net/sunrpc/clnt.c
View File

@ -910,6 +910,20 @@ unsigned long rpc_cancel_tasks(struct rpc_clnt *clnt, int error,
}
EXPORT_SYMBOL_GPL(rpc_cancel_tasks);
static int rpc_clnt_disconnect_xprt(struct rpc_clnt *clnt,
struct rpc_xprt *xprt, void *dummy)
{
if (xprt_connected(xprt))
xprt_force_disconnect(xprt);
return 0;
}
void rpc_clnt_disconnect(struct rpc_clnt *clnt)
{
rpc_clnt_iterate_for_each_xprt(clnt, rpc_clnt_disconnect_xprt, NULL);
}
EXPORT_SYMBOL_GPL(rpc_clnt_disconnect);
/*
* Properly shut down an RPC client, terminating all outstanding
* requests.