Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / staging / lustre / lnet / lnet / lo.c

diff --git a/kernel/drivers/staging/lustre/lnet/lnet/lo.c b/kernel/drivers/staging/lustre/lnet/lnet/lo.c
new file mode 100644 (file)
index 0000000..f708c2e
--- /dev/null
+++ b/kernel/drivers/staging/lustre/lnet/lnet/lo.c
@@ -0,0 +1,120 @@
+/*
+ * GPL HEADER START
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ */
+
+#define DEBUG_SUBSYSTEM S_LNET
+#include "../../include/linux/lnet/lib-lnet.h"
+
+static int
+lolnd_send(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg)
+{
+       LASSERT(!lntmsg->msg_routing);
+       LASSERT(!lntmsg->msg_target_is_router);
+
+       return lnet_parse(ni, &lntmsg->msg_hdr, ni->ni_nid, lntmsg, 0);
+}
+
+static int
+lolnd_recv(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg,
+           int delayed, unsigned int niov,
+           struct kvec *iov, lnet_kiov_t *kiov,
+           unsigned int offset, unsigned int mlen, unsigned int rlen)
+{
+       lnet_msg_t *sendmsg = private;
+
+       if (lntmsg != NULL) {              /* not discarding */
+               if (sendmsg->msg_iov != NULL) {
+                       if (iov != NULL)
+                               lnet_copy_iov2iov(niov, iov, offset,
+                                                 sendmsg->msg_niov,
+                                                 sendmsg->msg_iov,
+                                                 sendmsg->msg_offset, mlen);
+                       else
+                               lnet_copy_iov2kiov(niov, kiov, offset,
+                                                  sendmsg->msg_niov,
+                                                  sendmsg->msg_iov,
+                                                  sendmsg->msg_offset, mlen);
+               } else {
+                       if (iov != NULL)
+                               lnet_copy_kiov2iov(niov, iov, offset,
+                                                  sendmsg->msg_niov,
+                                                  sendmsg->msg_kiov,
+                                                  sendmsg->msg_offset, mlen);
+                       else
+                               lnet_copy_kiov2kiov(niov, kiov, offset,
+                                                   sendmsg->msg_niov,
+                                                   sendmsg->msg_kiov,
+                                                   sendmsg->msg_offset, mlen);
+               }
+
+               lnet_finalize(ni, lntmsg, 0);
+       }
+
+       lnet_finalize(ni, sendmsg, 0);
+       return 0;
+}
+
+static int lolnd_instanced;
+
+static void
+lolnd_shutdown(lnet_ni_t *ni)
+{
+       CDEBUG(D_NET, "shutdown\n");
+       LASSERT(lolnd_instanced);
+
+       lolnd_instanced = 0;
+}
+
+static int
+lolnd_startup(lnet_ni_t *ni)
+{
+       LASSERT(ni->ni_lnd == &the_lolnd);
+       LASSERT(!lolnd_instanced);
+       lolnd_instanced = 1;
+
+       return 0;
+}
+
+lnd_t the_lolnd = {
+       /* .lnd_list       = */ {&the_lolnd.lnd_list, &the_lolnd.lnd_list},
+       /* .lnd_refcount   = */ 0,
+       /* .lnd_type       = */ LOLND,
+       /* .lnd_startup    = */ lolnd_startup,
+       /* .lnd_shutdown   = */ lolnd_shutdown,
+       /* .lnt_ctl     = */ NULL,
+       /* .lnd_send       = */ lolnd_send,
+       /* .lnd_recv       = */ lolnd_recv,
+       /* .lnd_eager_recv = */ NULL,
+       /* .lnd_notify     = */ NULL,
+       /* .lnd_accept     = */ NULL
+};