1 files changed, 152 insertions, 0 deletions
diff --git a/src/vnet/ethernet/packet.h b/src/vnet/ethernet/packet.h
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@@ -0,0 +1,152 @@
+/*
+ * Copyright (c) 2015 Cisco and/or its affiliates.
+ * 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.
+ */
+/*
+ * ethernet/packet.h: ethernet packet format.
+ *
+ * Copyright (c) 2008 Eliot Dresselhaus
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef included_ethernet_packet_h
+#define included_ethernet_packet_h
+
+typedef enum
+{
+#define ethernet_type(n,s) ETHERNET_TYPE_##s = n,
+#include <vnet/ethernet/types.def>
+#undef ethernet_type
+} ethernet_type_t;
+
+typedef struct
+{
+  /* Source/destination address. */
+  u8 dst_address[6];
+  u8 src_address[6];
+
+  /* Ethernet type. */
+  u16 type;
+} ethernet_header_t;
+
+#define ETHERNET_ADDRESS_UNICAST 0
+#define ETHERNET_ADDRESS_MULTICAST 1
+
+/* I/G bit: individual (unicast)/group (broadcast/multicast). */
+always_inline uword
+ethernet_address_cast (u8 * a)
+{
+  return (a[0] >> 0) & 1;
+}
+
+always_inline uword
+ethernet_address_is_locally_administered (u8 * a)
+{
+  return (a[0] >> 1) & 1;
+}
+
+always_inline void
+ethernet_address_set_locally_administered (u8 * a)
+{
+  a[0] |= 1 << 1;
+}
+
+/* For VLAN ethernet type. */
+typedef struct
+{
+  /* 3 bit priority, 1 bit CFI and 12 bit vlan id. */
+  u16 priority_cfi_and_id;
+
+#define ETHERNET_N_VLAN (1 << 12)
+
+  /* Inner ethernet type. */
+  u16 type;
+} ethernet_vlan_header_t;
+
+
+/* VLAN with ethertype first and vlan id second */
+typedef struct
+{
+  /* vlan type */
+  u16 type;
+
+  /* 3 bit priority, 1 bit CFI and 12 bit vlan id. */
+  u16 priority_cfi_and_id;
+} ethernet_vlan_header_tv_t;
+
+/* PBB header with B-TAG - backbone VLAN indicator and I-TAG - service encapsulation */
+typedef struct
+{
+  /* Backbone source/destination address. */
+  u8 b_dst_address[6];
+  u8 b_src_address[6];
+
+  /* B-tag */
+  u16 b_type;
+  /* 3 bit priority, 1 bit DEI and 12 bit vlan id */
+  u16 priority_dei_id;
+
+  /* I-tag */
+  u16 i_type;
+  /* 3 bit priority, 1 bit DEI, 1 bit UCA, 3 bit RES and 24 bit I_SID (service identifier) */
+  u32 priority_dei_uca_res_sid;
+
+#define ETHERNET_N_PBB (1 << 24)
+} ethernet_pbb_header_t;
+
+/* *INDENT-OFF* */
+typedef CLIB_PACKED (struct
+{
+  /* Backbone source/destination address. */
+  u8 b_dst_address[6];
+  u8 b_src_address[6];
+
+  /* B-tag */
+  u16 b_type;
+  /* 3 bit priority, 1 bit DEI and 12 bit vlan id */
+  u16 priority_dei_id;
+
+  /* I-tag */
+  u16 i_type;
+  /* 3 bit priority, 1 bit DEI, 1 bit UCA, 3 bit RES and 24 bit I_SID (service identifier) */
+  u32 priority_dei_uca_res_sid;
+}) ethernet_pbb_header_packed_t;
+/* *INDENT-ON* */
+
+#endif /* included_ethernet_packet_h */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */