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/*
* 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_address_t ip = {
.ip = nh,
.version = AF_IP6,
};
ip_neighbor_del (&ip, 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 <interface> [del] <host-ip>",
.function = set_ip6_nd_proxy_cmd,
};
/* *INDENT-ON* */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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