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authorNeale Ranns <nranns@cisco.com>2019-09-30 10:53:31 +0000
committerOle Trøan <otroan@employees.org>2019-12-17 10:56:20 +0000
commitcbe25aab3be72154f2c706c39eeba6a77f34450f (patch)
tree131fb53b5ec973be045ffb9e2eb797af01d112a0 /src/vnet/ip6-nd/ip6_nd_proxy.c
parent96453fd2417ebd1d69354a7fb692976129cea80e (diff)
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>
Diffstat (limited to 'src/vnet/ip6-nd/ip6_nd_proxy.c')
-rw-r--r--src/vnet/ip6-nd/ip6_nd_proxy.c127
1 files changed, 127 insertions, 0 deletions
diff --git a/src/vnet/ip6-nd/ip6_nd_proxy.c b/src/vnet/ip6-nd/ip6_nd_proxy.c
new file mode 100644
index 00000000000..110847fff84
--- /dev/null
+++ b/src/vnet/ip6-nd/ip6_nd_proxy.c
@@ -0,0 +1,127 @@
+/*
+ * ip/ip6_neighbor.c: IP6 neighbor handling
+ *
+ * Copyright (c) 2010 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/ip6-nd/ip6_nd.h>
+#include <vnet/ip-neighbor/ip_neighbor.h>
+
+#include <vnet/fib/ip6_fib.h>
+
+static int
+ip6_nd_proxy_add_del (u32 sw_if_index, const ip6_address_t * addr, u8 is_del)
+{
+ /* *INDENT-OFF* */
+ u32 fib_index;
+ fib_prefix_t pfx = {
+ .fp_len = 128,
+ .fp_proto = FIB_PROTOCOL_IP6,
+ .fp_addr = {
+ .ip6 = *addr,
+ },
+ };
+ ip46_address_t nh = {
+ .ip6 = *addr,
+ };
+ /* *INDENT-ON* */
+
+ fib_index = ip6_fib_table_get_index_for_sw_if_index (sw_if_index);
+
+ if (~0 == fib_index)
+ return VNET_API_ERROR_NO_SUCH_FIB;
+
+ if (is_del)
+ {
+ fib_table_entry_path_remove (fib_index,
+ &pfx,
+ FIB_SOURCE_IP6_ND_PROXY,
+ DPO_PROTO_IP6,
+ &nh,
+ sw_if_index,
+ ~0, 1, FIB_ROUTE_PATH_FLAG_NONE);
+ /* flush the ND cache of this address if it's there */
+ ip_neighbor_del (&nh, IP46_TYPE_IP6, sw_if_index);
+ }
+ else
+ {
+ fib_table_entry_path_add (fib_index,
+ &pfx,
+ FIB_SOURCE_IP6_ND_PROXY,
+ FIB_ENTRY_FLAG_NONE,
+ DPO_PROTO_IP6,
+ &nh,
+ sw_if_index,
+ ~0, 1, NULL, FIB_ROUTE_PATH_FLAG_NONE);
+ }
+ return (0);
+}
+
+int
+ip6_nd_proxy_add (u32 sw_if_index, const ip6_address_t * addr)
+{
+ return (ip6_nd_proxy_add_del (sw_if_index, addr, 0));
+}
+
+int
+ip6_nd_proxy_del (u32 sw_if_index, const ip6_address_t * addr)
+{
+ return (ip6_nd_proxy_add_del (sw_if_index, addr, 1));
+}
+
+static clib_error_t *
+set_ip6_nd_proxy_cmd (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ vnet_main_t *vnm = vnet_get_main ();
+ clib_error_t *error = 0;
+ ip6_address_t addr;
+ u32 sw_if_index;
+ u8 is_del = 0;
+
+ if (unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
+ {
+ /* get the rest of the command */
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "%U", unformat_ip6_address, &addr))
+ break;
+ else if (unformat (input, "delete") || unformat (input, "del"))
+ is_del = 1;
+ else
+ return (unformat_parse_error (input));
+ }
+ }
+
+ ip6_nd_proxy_add_del (sw_if_index, &addr, is_del);
+
+ return error;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (set_ip6_nd_proxy_command, static) =
+{
+ .path = "set ip6 nd proxy",
+ .short_help = "set ip6 nd proxy <HOST> <INTERFACE>",
+ .function = set_ip6_nd_proxy_cmd,
+};
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */