NTR selection method
Signed-off-by: Simon Horman <simon.hor...@netronome.com>
---
This patch does not define any selection method names, however,
a subsequent patch proposes a "hash" selection method.
v4
* No change
v3
* Use NTR instead of NMX as Netronome extension prefix
v2
* Use array of TLVs rather than OF1.1 match for fields field of
NTR selection method property
---
include/openflow/automake.mk | 1 +
include/openflow/netronome-ext.h | 66 ++++++++++++++++++++++++++++++++++++++++
2 files changed, 67 insertions(+)
create mode 100644 include/openflow/netronome-ext.h
diff --git a/include/openflow/automake.mk b/include/openflow/automake.mk
index 50933d5..d7dac91 100644
--- a/include/openflow/automake.mk
+++ b/include/openflow/automake.mk
@@ -1,5 +1,6 @@
openflowincludedir = $(includedir)/openflow
openflowinclude_HEADERS = \
+ include/openflow/netronome-ext.h \
include/openflow/nicira-ext.h \
include/openflow/openflow-1.0.h \
include/openflow/openflow-1.1.h \
diff --git a/include/openflow/netronome-ext.h b/include/openflow/netronome-ext.h
new file mode 100644
index 0000000..8db7b79
--- /dev/null
+++ b/include/openflow/netronome-ext.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2014 Netronome.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef OPENFLOW_NETRONOME_EXT_H
+#define OPENFLOW_NETRONOME_EXT_H 1
+
+#include "openflow/openflow.h"
+#include "openvswitch/types.h"
+
+/* The following vendor extension, proposed by Netronome, is not yet
+ * standardized, so they are not included in openflow.h. It may
+ * be suitable for standardization */
+
+
+/* Netronome enhanced select group */
+
+enum ntr_group_mod_subtype {
+ NTRT_SELECTION_METHOD = 1,
+};
+
+#define NTR_MAX_SELECTION_METHOD_LEN 16
+
+struct ntr_group_prop_selection_method {
+ ovs_be16 type; /* OFPGPT15_EXPERIMENTER. */
+ ovs_be16 length; /* Length in bytes of this property
+ * excluding trailing padding. */
+ ovs_be32 experimenter; /* NTR_VENDOR_ID. */
+ ovs_be32 exp_type; /* NTRT_SELECTION_METHOD. */
+ ovs_be32 pad;
+ char selection_method[NTR_MAX_SELECTION_METHOD_LEN];
+ /* Null-terminated */
+ ovs_be64 selection_method_param; /* Non-Field parameter for
+ * bucket selection. */
+
+ /* Followed by:
+ * - Exactly (length - 40) (possibly 0) bytes containing OXM TLVs, then
+ * - Exactly ((length + 7)/8*8 - length) (between 0 and 7) bytes of
+ * all-zero bytes
+ * In summary, ntr_group_prop_selection_method is padded as needed,
+ * to make its overall size a multiple of 8, to preserve alignment
+ * in structures using it.
+ */
+ /* uint8_t field_array[0]; */ /* Zero or more fields encoded as
+ * OXM TLVs where the has_mask bit must
+ * be zero and the value it specifies is
+ * a mask to apply to packet fields and
+ * then input them to the selection
+ * method of a select group. */
+ /* uint8_t pad2[0]; */
+};
+OFP_ASSERT(sizeof(struct ntr_group_prop_selection_method) == 40);
+
+#endif /* openflow/netronome-ext.h */
--
2.1.4
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