ip: Protocol Independent IP Neighbors

Type: feature

 - ip-neighbour: generic neighbour handling; APIs, DBs, event handling,
aging
 - arp: ARP protocol implementation
 - ip6-nd; IPv6 neighbor discovery implementation; separate ND,
MLD, RA
 - ip6-link; manage link-local addresses
 - l2-arp-term; events separated from IP neighbours, since they are not
the same.

vnet retains just enough education to perform ND/ARP packet
construction.
arp and ip6-nd to be moved to plugins soon.

Change-Id: I88dedd0006b299344f4c7024a0aa5baa6b9a8bbe
Signed-off-by: Neale Ranns <nranns@cisco.com>

1 files changed, 82 insertions, 0 deletions

diff --git a/src/vnet/ip/ip6_link.h b/src/vnet/ip/ip6_link.h
new file mode 100644
index 00000000000..01506bb4765
--- /dev/null
+++ b/src/vnet/ip/ip6_link.h
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2019 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.
+ */
+
+#include <vnet/ip/ip.h>
+
+/**
+ * IPv6 Configuration on an interface
+ */
+
+extern int ip6_link_enable (u32 sw_if_index);
+extern bool ip6_link_is_enabled (u32 sw_if_index);
+extern int ip6_link_disable (u32 sw_if_index);
+
+extern const ip6_address_t *ip6_get_link_local_address (u32 sw_if_index);
+
+extern int ip6_set_link_local_address (u32 sw_if_index,
+				       const ip6_address_t * address);
+extern adj_index_t ip6_link_get_mcast_adj (u32 sw_if_index);
+
+extern int
+ip6_src_address_for_packet (u32 sw_if_index,
+			    const ip6_address_t * dst, ip6_address_t * src);
+
+/**
+ * Delegates for the interfaces
+ *
+ * delegates are a means for a external component to 'extend' the config
+ * object by adding their own objects (aka delegates).
+ */
+
+/**
+ * Callback functions for handling actions on the link
+ */
+typedef void (*ip6_link_enable_fn_t) (u32 sw_if_index);
+typedef void (*ip6_link_disable_fn_t) (index_t ildi);
+typedef void (*ip6_link_ll_change_fn_t) (u32 ildi, const ip6_address_t * a);
+typedef void (*ip6_link_address_change_fn_t) (u32 ildi,
+					      const ip6_address_t * a,
+					      u8 address_oength);
+
+typedef struct ip6_link_delegate_vft_t_
+{
+  ip6_link_enable_fn_t ildv_enable;
+  ip6_link_disable_fn_t ildv_disable;
+  ip6_link_ll_change_fn_t ildv_ll_change;
+  ip6_link_address_change_fn_t ildv_addr_add;
+  ip6_link_address_change_fn_t ildv_addr_del;
+  format_function_t *ildv_format;
+} ip6_link_delegate_vft_t;
+
+typedef u32 ip6_link_delegate_id_t;
+
+
+extern ip6_link_delegate_id_t ip6_link_delegate_register (const
+							  ip6_link_delegate_vft_t
+							  * vft);
+extern index_t ip6_link_delegate_get (u32 sw_if_index,
+				      ip6_link_delegate_id_t id);
+extern bool ip6_link_delegate_update (u32 sw_if_index,
+				      ip6_link_delegate_id_t id, index_t ii);
+extern void ip6_link_delegate_remove (u32 sw_if_index,
+				      ip6_link_delegate_id_t id, index_t ii);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */