SUNRPC/backchanel: set XPT_CONG_CTRL flag for bc xprt

kinglongmee · J. Bruce Fields · commit 5427290d64c7 · 2017-03-09T15:20:46.000-05:00
The xprt for backchannel is created separately, not in TCP/UDP code. It needs the XPT_CONG_CTRL flag set on it too--otherwise requests on the NFSv4.1 backchannel are rjected in svc_process_common(): 1191 if (versp->vs_need_cong_ctrl && 1192 !test_bit(XPT_CONG_CTRL, &rqstp->rq_xprt->xpt_flags)) 1193 goto err_bad_vers; Fixes: 5283b03 ("nfs/nfsd/sunrpc: enforce transport...") Signed-off-by: Kinglong Mee <kinglongmee@gmail.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
@@ -1635,6 +1635,7 @@ static struct svc_xprt *svc_bc_create_socket(struct svc_serv *serv,
 
 	xprt = &svsk->sk_xprt;
 	svc_xprt_init(net, &svc_tcp_bc_class, xprt, serv);
+	set_bit(XPT_CONG_CTRL, &svsk->sk_xprt.xpt_flags);
 
 	serv->sv_bc_xprt = xprt;
 
