1 files changed, 190 insertions, 0 deletions
diff --git a/src/vnet/l2/l2_bd.h b/src/vnet/l2/l2_bd.h
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+++ b/src/vnet/l2/l2_bd.h
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+/*
+ * l2_bd.h : layer 2 bridge domain
+ *
+ * Copyright (c) 2013 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.
+ */
+
+#ifndef included_l2bd_h
+#define included_l2bd_h
+
+#include <vlib/vlib.h>
+#include <vnet/vnet.h>
+
+typedef struct
+{
+  /* hash bd_id -> bd_index */
+  uword *bd_index_by_bd_id;
+
+  /* Busy bd_index bitmap */
+  uword *bd_index_bitmap;
+
+  /* convenience */
+  vlib_main_t *vlib_main;
+  vnet_main_t *vnet_main;
+} bd_main_t;
+
+extern bd_main_t bd_main;
+
+/* Bridge domain member  */
+
+#define L2_FLOOD_MEMBER_NORMAL 0
+#define L2_FLOOD_MEMBER_BVI    1
+
+typedef struct
+{
+  u32 sw_if_index;		/* the output L2 interface */
+  u8 flags;			/* 0=normal, 1=bvi */
+  u8 shg;			/* split horizon group number  */
+  u16 spare;
+} l2_flood_member_t;
+
+/* Per-bridge domain configuration */
+
+typedef struct
+{
+  u32 feature_bitmap;
+  /*
+   * Contains bit enables for flooding, learning, and forwarding.
+   * All other feature bits should always be set.
+   *
+   * identity of the bridge-domain's BVI interface
+   * set to ~0 if there is no BVI
+   */
+  u32 bvi_sw_if_index;
+
+  /* bridge domain id, not to be confused with bd_index */
+  u32 bd_id;
+
+  /* Vector of member ports */
+  l2_flood_member_t *members;
+
+  /* First flood_count member ports are flooded */
+  u32 flood_count;
+
+  /* Tunnel Master (Multicast vxlan) are always flooded */
+  u32 tun_master_count;
+
+  /* Tunnels (Unicast vxlan) are flooded if there are no masters */
+  u32 tun_normal_count;
+
+  /* hash ip4/ip6 -> mac for arp/nd termination */
+  uword *mac_by_ip4;
+  uword *mac_by_ip6;
+
+  /* mac aging */
+  u8 mac_age;
+
+  /* sequence number for bridge domain based flush of MACs */
+  u8 seq_num;
+
+  /* Bridge domain tag (C string NULL terminated) */
+  u8 *bd_tag;
+
+} l2_bridge_domain_t;
+
+/* Limit Bridge Domain ID to 24 bits to match 24-bit VNI range */
+#define L2_BD_ID_MAX ((1<<24)-1)
+
+typedef struct
+{
+  u32 bd_id;
+  u8 flood;
+  u8 uu_flood;
+  u8 forward;
+  u8 learn;
+  u8 arp_term;
+  u8 mac_age;
+  u8 *bd_tag;
+  u8 is_add;
+} l2_bridge_domain_add_del_args_t;
+
+/* Return 1 if bridge domain has been initialized */
+always_inline u32
+bd_is_valid (l2_bridge_domain_t * bd_config)
+{
+  return (bd_config->feature_bitmap != 0);
+}
+
+/* Init bridge domain if not done already */
+void bd_validate (l2_bridge_domain_t * bd_config);
+
+
+void
+bd_add_member (l2_bridge_domain_t * bd_config, l2_flood_member_t * member);
+
+u32 bd_remove_member (l2_bridge_domain_t * bd_config, u32 sw_if_index);
+
+
+#define L2_LEARN   (1<<0)
+#define L2_FWD     (1<<1)
+#define L2_FLOOD   (1<<2)
+#define L2_UU_FLOOD (1<<3)
+#define L2_ARP_TERM (1<<4)
+
+u32 bd_set_flags (vlib_main_t * vm, u32 bd_index, u32 flags, u32 enable);
+void bd_set_mac_age (vlib_main_t * vm, u32 bd_index, u8 age);
+int bd_add_del (l2_bridge_domain_add_del_args_t * args);
+
+/**
+ * \brief Get a bridge domain.
+ *
+ * Get a bridge domain with the given bridge domain ID.
+ *
+ * \param bdm bd_main pointer.
+ * \param bd_id The bridge domain ID
+ * \return The bridge domain index in \c l2input_main->l2_bridge_domain_t vector.
+ */
+u32 bd_find_index (bd_main_t * bdm, u32 bd_id);
+
+/**
+ * \brief Create a bridge domain.
+ *
+ * Create a bridge domain with the given bridge domain ID
+ *
+ * \param bdm bd_main pointer.
+ * \return The bridge domain index in \c l2input_main->l2_bridge_domain_t vector.
+ */
+u32 bd_add_bd_index (bd_main_t * bdm, u32 bd_id);
+
+/**
+ * \brief Get or create a bridge domain.
+ *
+ * Get a bridge domain with the given bridge domain ID, if one exists, otherwise
+ * create one with the given ID, or the first unused ID if the given ID is ~0..
+ *
+ * \param bdm bd_main pointer.
+ * \param bd_id The bridge domain ID
+ * \return The bridge domain index in \c l2input_main->l2_bridge_domain_t vector.
+ */
+static inline u32
+bd_find_or_add_bd_index (bd_main_t * bdm, u32 bd_id)
+{
+  u32 bd_index = bd_find_index (bdm, bd_id);
+  if (bd_index == ~0)
+    return bd_add_bd_index (bdm, bd_id);
+  return bd_index;
+}
+
+u32 bd_add_del_ip_mac (u32 bd_index,
+		       u8 * ip_addr, u8 * mac_addr, u8 is_ip6, u8 is_add);
+
+#endif
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */