svc: Add xpo_prep_reply_hdr

Some transports add fields to the RPC header for replies, e.g. the TCP
record length. This function is called when preparing the reply header
to allow each transport to add whatever fields it requires.

Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
Acked-by: Neil Brown <neilb@suse.de>
Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Greg Banks <gnb@sgi.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

1 files changed, 3 insertions, 3 deletions

diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index 94eed9b80038..8281a0402652 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -840,9 +840,9 @@ svc_process(struct svc_rqst *rqstp)
         rqstp->rq_res.tail[0].iov_len = 0;
         /* Will be turned off only in gss privacy case: */
         rqstp->rq_splice_ok = 1;
-        /* tcp needs a space for the record length... */
-        if (rqstp->rq_prot == IPPROTO_TCP)
-                svc_putnl(resv, 0);
+
+        /* Setup reply header */
+        rqstp->rq_xprt->xpt_ops->xpo_prep_reply_hdr(rqstp);
 
         rqstp->rq_xid = svc_getu32(argv);
         svc_putu32(resv, rqstp->rq_xid);