SUNRPC: add EXPORT_SYMBOL_GPL for generic transport functions

SUNRPC: add EXPORT_SYMBOL_GPL for generic transport functions

As a preface to allowing arbitrary transport modules to be loaded
dynamically, add EXPORT_SYMBOL_GPL for all generic transport functions
that a transport implementation might want to use.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Acked-by: Tom Talpey <tmt@netapp.com>

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

5 files changed, 25 insertions, 0 deletions

diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c
index 6f0af08a51dc..09a2a8fde093 100644
--- a/net/sunrpc/rpcb_clnt.c
+++ b/net/sunrpc/rpcb_clnt.c
@@ -415,6 +415,7 @@ bailout_nofree:
 bailout_nowake:
         task->tk_status = status;
 }
+EXPORT_SYMBOL_GPL(rpcb_getport_async);
 
 /*
  * Rpcbind child task calls this callback via tk_exit.
diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
index 954d7ec86c7e..3c773c53e12e 100644
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c
@@ -777,6 +777,7 @@ void *rpc_malloc(struct rpc_task *task, size_t size)
                         task->tk_pid, size, buf);
         return &buf->data;
 }
+EXPORT_SYMBOL_GPL(rpc_malloc);
 
 /**
  * rpc_free - free buffer allocated via rpc_malloc
@@ -802,6 +803,7 @@ void rpc_free(void *buffer)
         else
                 kfree(buf);
 }
+EXPORT_SYMBOL_GPL(rpc_free);
 
 /*
  * Creation and deletion of RPC task structures
diff --git a/net/sunrpc/socklib.c b/net/sunrpc/socklib.c
index 1d377d1ab7f4..97ac45f034d6 100644
--- a/net/sunrpc/socklib.c
+++ b/net/sunrpc/socklib.c
@@ -34,6 +34,7 @@ size_t xdr_skb_read_bits(struct xdr_skb_reader *desc, void *to, size_t len)
         desc->offset += len;
         return len;
 }
+EXPORT_SYMBOL_GPL(xdr_skb_read_bits);
 
 /**
  * xdr_skb_read_and_csum_bits - copy and checksum from skb to buffer
@@ -137,6 +138,7 @@ copy_tail:
 out:
         return copied;
 }
+EXPORT_SYMBOL_GPL(xdr_partial_copy_from_skb);
 
 /**
  * csum_partial_copy_to_xdr - checksum and copy data
@@ -179,3 +181,4 @@ no_checksum:
                 return -1;
         return 0;
 }
+EXPORT_SYMBOL_GPL(csum_partial_copy_to_xdr);
diff --git a/net/sunrpc/timer.c b/net/sunrpc/timer.c
index 8142fdb8a930..31becbf09263 100644
--- a/net/sunrpc/timer.c
+++ b/net/sunrpc/timer.c
@@ -17,6 +17,7 @@
 
 #include <linux/types.h>
 #include <linux/unistd.h>
+#include <linux/module.h>
 
 #include <linux/sunrpc/clnt.h>
 
@@ -40,6 +41,7 @@ rpc_init_rtt(struct rpc_rtt *rt, unsigned long timeo)
                 rt->ntimeouts[i] = 0;
         }
 }
+EXPORT_SYMBOL_GPL(rpc_init_rtt);
 
 /*
  * NB: When computing the smoothed RTT and standard deviation,
@@ -75,6 +77,7 @@ rpc_update_rtt(struct rpc_rtt *rt, unsigned timer, long m)
         if (*sdrtt < RPC_RTO_MIN)
                 *sdrtt = RPC_RTO_MIN;
 }
+EXPORT_SYMBOL_GPL(rpc_update_rtt);
 
 /*
  * Estimate rto for an nfs rpc sent via. an unreliable datagram.
@@ -103,3 +106,4 @@ rpc_calc_rto(struct rpc_rtt *rt, unsigned timer)
 
         return res;
 }
+EXPORT_SYMBOL_GPL(rpc_calc_rto);
diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c
index c8c2edccad7e..bc13616e7fdc 100644
--- a/net/sunrpc/xprt.c
+++ b/net/sunrpc/xprt.c
@@ -118,6 +118,7 @@ out_sleep:
                 rpc_sleep_on(&xprt->sending, task, NULL, NULL);
         return 0;
 }
+EXPORT_SYMBOL_GPL(xprt_reserve_xprt);
 
 static void xprt_clear_locked(struct rpc_xprt *xprt)
 {
@@ -167,6 +168,7 @@ out_sleep:
                 rpc_sleep_on(&xprt->sending, task, NULL, NULL);
         return 0;
 }
+EXPORT_SYMBOL_GPL(xprt_reserve_xprt_cong);
 
 static inline int xprt_lock_write(struct rpc_xprt *xprt, struct rpc_task *task)
 {
@@ -246,6 +248,7 @@ void xprt_release_xprt(struct rpc_xprt *xprt, struct rpc_task *task)
                 __xprt_lock_write_next(xprt);
         }
 }
+EXPORT_SYMBOL_GPL(xprt_release_xprt);
 
 /**
  * xprt_release_xprt_cong - allow other requests to use a transport
@@ -262,6 +265,7 @@ void xprt_release_xprt_cong(struct rpc_xprt *xprt, struct rpc_task *task)
                 __xprt_lock_write_next_cong(xprt);
         }
 }
+EXPORT_SYMBOL_GPL(xprt_release_xprt_cong);
 
 static inline void xprt_release_write(struct rpc_xprt *xprt, struct rpc_task *task)
 {
@@ -314,6 +318,7 @@ void xprt_release_rqst_cong(struct rpc_task *task)
 {
         __xprt_put_cong(task->tk_xprt, task->tk_rqstp);
 }
+EXPORT_SYMBOL_GPL(xprt_release_rqst_cong);
 
 /**
  * xprt_adjust_cwnd - adjust transport congestion window
@@ -345,6 +350,7 @@ void xprt_adjust_cwnd(struct rpc_task *task, int result)
         xprt->cwnd = cwnd;
         __xprt_put_cong(xprt, req);
 }
+EXPORT_SYMBOL_GPL(xprt_adjust_cwnd);
 
 /**
  * xprt_wake_pending_tasks - wake all tasks on a transport's pending queue
@@ -359,6 +365,7 @@ void xprt_wake_pending_tasks(struct rpc_xprt *xprt, int status)
         else
                 rpc_wake_up(&xprt->pending);
 }
+EXPORT_SYMBOL_GPL(xprt_wake_pending_tasks);
 
 /**
  * xprt_wait_for_buffer_space - wait for transport output buffer to clear
@@ -373,6 +380,7 @@ void xprt_wait_for_buffer_space(struct rpc_task *task)
         task->tk_timeout = req->rq_timeout;
         rpc_sleep_on(&xprt->pending, task, NULL, NULL);
 }
+EXPORT_SYMBOL_GPL(xprt_wait_for_buffer_space);
 
 /**
  * xprt_write_space - wake the task waiting for transport output buffer space
@@ -393,6 +401,7 @@ void xprt_write_space(struct rpc_xprt *xprt)
         }
         spin_unlock_bh(&xprt->transport_lock);
 }
+EXPORT_SYMBOL_GPL(xprt_write_space);
 
 /**
  * xprt_set_retrans_timeout_def - set a request's retransmit timeout
@@ -406,6 +415,7 @@ void xprt_set_retrans_timeout_def(struct rpc_task *task)
 {
         task->tk_timeout = task->tk_rqstp->rq_timeout;
 }
+EXPORT_SYMBOL_GPL(xprt_set_retrans_timeout_def);
 
 /*
  * xprt_set_retrans_timeout_rtt - set a request's retransmit timeout
@@ -425,6 +435,7 @@ void xprt_set_retrans_timeout_rtt(struct rpc_task *task)
         if (task->tk_timeout > max_timeout || task->tk_timeout == 0)
                 task->tk_timeout = max_timeout;
 }
+EXPORT_SYMBOL_GPL(xprt_set_retrans_timeout_rtt);
 
 static void xprt_reset_majortimeo(struct rpc_rqst *req)
 {
@@ -500,6 +511,7 @@ void xprt_disconnect(struct rpc_xprt *xprt)
         xprt_wake_pending_tasks(xprt, -ENOTCONN);
         spin_unlock_bh(&xprt->transport_lock);
 }
+EXPORT_SYMBOL_GPL(xprt_disconnect);
 
 static void
 xprt_init_autodisconnect(unsigned long data)
@@ -610,6 +622,7 @@ struct rpc_rqst *xprt_lookup_rqst(struct rpc_xprt *xprt, __be32 xid)
         xprt->stat.bad_xids++;
         return NULL;
 }
+EXPORT_SYMBOL_GPL(xprt_lookup_rqst);
 
 /**
  * xprt_update_rtt - update an RPC client's RTT state after receiving a reply
@@ -629,6 +642,7 @@ void xprt_update_rtt(struct rpc_task *task)
                 rpc_set_timeo(rtt, timer, req->rq_ntrans - 1);
         }
 }
+EXPORT_SYMBOL_GPL(xprt_update_rtt);
 
 /**
  * xprt_complete_rqst - called when reply processing is complete
@@ -653,6 +667,7 @@ void xprt_complete_rqst(struct rpc_task *task, int copied)
         req->rq_received = req->rq_private_buf.len = copied;
         rpc_wake_up_task(task);
 }
+EXPORT_SYMBOL_GPL(xprt_complete_rqst);
 
 static void xprt_timer(struct rpc_task *task)
 {