This is mainly for use by NFSv4.1, where the session negotiation
ultimately wants to decide how many RPC slots we can fill.
Signed-off-by: Trond Myklebust <Trond.Myklebust@xxxxxxxxxx>
---
include/linux/sunrpc/clnt.h | 1 +
include/linux/sunrpc/xprt.h | 3 +++
net/sunrpc/clnt.c | 2 ++
net/sunrpc/xprtsock.c | 6 +++++-
4 files changed, 11 insertions(+), 1 deletion(-)
diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h
index 2cf4ffa..e7d492c 100644
--- a/include/linux/sunrpc/clnt.h
+++ b/include/linux/sunrpc/clnt.h
@@ -124,6 +124,7 @@ struct rpc_create_args {
#define RPC_CLNT_CREATE_NOPING (1UL << 4)
#define RPC_CLNT_CREATE_DISCRTRY (1UL << 5)
#define RPC_CLNT_CREATE_QUIET (1UL << 6)
+#define RPC_CLNT_CREATE_INFINITE_SLOTS (1UL << 7)
struct rpc_clnt *rpc_create(struct rpc_create_args *args);
struct rpc_clnt *rpc_bind_new_program(struct rpc_clnt *,
diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h
index 12815f6..ff53924 100644
--- a/include/linux/sunrpc/xprt.h
+++ b/include/linux/sunrpc/xprt.h
@@ -255,6 +255,8 @@ static inline int bc_prealloc(struct rpc_rqst *req)
}
#endif /* CONFIG_SUNRPC_BACKCHANNEL */
+#define XPRT_CREATE_INFINITE_SLOTS (1U)
+
struct xprt_create {
int ident; /* XPRT_TRANSPORT identifier */
struct net * net;
@@ -263,6 +265,7 @@ struct xprt_create {
size_t addrlen;
const char *servername;
struct svc_xprt *bc_xprt; /* NFSv4.1 backchannel */
+ unsigned int flags;
};
struct xprt_class {
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index a80ee9b..651245a 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -414,6 +414,8 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args)
};
char servername[48];
+ if (args->flags & RPC_CLNT_CREATE_INFINITE_SLOTS)
+ xprtargs.flags |= XPRT_CREATE_INFINITE_SLOTS;
/*
* If the caller chooses not to specify a hostname, whip
* up a string representation of the passed-in address.
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 3081620..726e702 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -2762,9 +2762,13 @@ static struct rpc_xprt *xs_setup_tcp(struct xprt_create *args)
struct rpc_xprt *xprt;
struct sock_xprt *transport;
struct rpc_xprt *ret;
+ unsigned int max_slot_table_size = xprt_max_tcp_slot_table_entries;
+
+ if (args->flags & XPRT_CREATE_INFINITE_SLOTS)
+ max_slot_table_size = RPC_MAX_SLOT_TABLE_LIMIT;
xprt = xs_setup_xprt(args, xprt_tcp_slot_table_entries,
- xprt_max_tcp_slot_table_entries);
+ max_slot_table_size);
if (IS_ERR(xprt))
return xprt;
transport = container_of(xprt, struct sock_xprt, xprt);
--
1.8.1.4
--
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