SUNRPC: Handle ENETUNREACH, EHOSTUNREACH and EHOSTDOWN socket errors

In case of any of the above errors occuring, delay for 3 seconds, then
handle as if it were a timeout error.

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

1 files changed, 8 insertions, 0 deletions

diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index 87efcd207f23..355e7863c0aa 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -1030,6 +1030,14 @@ call_status(struct rpc_task *task)
 
         task->tk_status = 0;
         switch(status) {
+        case -EHOSTDOWN:
+        case -EHOSTUNREACH:
+        case -ENETUNREACH:
+                /*
+                 * Delay any retries for 3 seconds, then handle as if it
+                 * were a timeout.
+                 */
+                rpc_delay(task, 3*HZ);
         case -ETIMEDOUT:
                 task->tk_action = call_timeout;
                 break;