rxrpc: Allow the reply time to be obtained on a client call

[sfrench/cifs-2.6.git] / net / rxrpc / af_rxrpc.c

diff --git a/net/rxrpc/af_rxrpc.c b/net/rxrpc/af_rxrpc.c
index 2fdd276f684226002c8e904fc423b675aa40737e..013dbcb052e5a1c7900fe22f76d1e4a9cbd7f534 100644 (file)
--- a/net/rxrpc/af_rxrpc.c
+++ b/net/rxrpc/af_rxrpc.c
@@ -385,6 +385,20 @@ u32 rxrpc_kernel_check_life(struct socket *sock, struct rxrpc_call *call)
 }
 EXPORT_SYMBOL(rxrpc_kernel_check_life);
 
+/**
+ * rxrpc_kernel_get_epoch - Retrieve the epoch value from a call.
+ * @sock: The socket the call is on
+ * @call: The call to query
+ *
+ * Allow a kernel service to retrieve the epoch value from a service call to
+ * see if the client at the other end rebooted.
+ */
+u32 rxrpc_kernel_get_epoch(struct socket *sock, struct rxrpc_call *call)
+{
+       return call->conn->proto.epoch;
+}
+EXPORT_SYMBOL(rxrpc_kernel_get_epoch);
+
 /**
  * rxrpc_kernel_check_call - Check a call's state
  * @sock: The socket the call is on