[PATCH] RPC: skip over transport-specific heads automatically

 Add a generic mechanism for skipping over transport-specific headers
 when constructing an RPC request.  This removes another "xprt->stream"
 dependency.

 Test-plan:
 Write-intensive workload on a single mount point (try both UDP and
 TCP).

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

1 files changed, 2 insertions, 4 deletions

diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c
index 53a030acdf75..d2b08f16c257 100644
--- a/net/sunrpc/auth_gss/auth_gss.c
+++ b/net/sunrpc/auth_gss/auth_gss.c
@@ -844,10 +844,8 @@ gss_marshal(struct rpc_task *task, u32 *p)
 
         /* We compute the checksum for the verifier over the xdr-encoded bytes
          * starting with the xid and ending at the end of the credential: */
-        iov.iov_base = req->rq_snd_buf.head[0].iov_base;
-        if (task->tk_client->cl_xprt->stream)
-                /* See clnt.c:call_header() */
-                iov.iov_base += 4;
+        iov.iov_base = xprt_skip_transport_header(task->tk_xprt,
+                                        req->rq_snd_buf.head[0].iov_base);
         iov.iov_len = (u8 *)p - (u8 *)iov.iov_base;
         xdr_buf_from_iov(&iov, &verf_buf);