Commit 5427290d authored Mar 07, 2017 by Kinglong Mee Committed by J. Bruce Fields Mar 09, 2017

SUNRPC/backchanel: set XPT_CONG_CTRL flag for bc xprt



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: 5283b03e ("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>

parent c1ae3cfa

net/sunrpc/svcsock.c

+1 −0

Original line number	Original line	Diff line number	Diff line
	@@ -1635,6 +1635,7 @@ static struct svc_xprt svc_bc_create_socket(struct svc_serv serv,

	xprt = &svsk->sk_xprt;		xprt = &svsk->sk_xprt;
	svc_xprt_init(net, &svc_tcp_bc_class, xprt, serv);		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;		serv->sv_bc_xprt = xprt;