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/*
* 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.
*/
#include <vnet/ip/ip.h>
#include <vnet/ethernet/ethernet.h>
typedef struct {
u8 mac_addr[6];
} mac_addr_t;
static clib_error_t *
virtual_ip_cmd_fn_command_fn (vlib_main_t * vm,
unformat_input_t * input,
vlib_cli_command_t * cmd)
{
unformat_input_t _line_input, * line_input = &_line_input;
vnet_main_t * vnm = vnet_get_main();
ip4_main_t * im = &ip4_main;
ip_lookup_main_t * lm = &im->lookup_main;
ip4_address_t ip_addr, next_hop;
u8 mac_addr[6];
mac_addr_t *mac_addrs = 0;
u32 sw_if_index;
u32 i, f;
/* Get a line of input. */
if (! unformat_user (input, unformat_line_input, line_input))
return 0;
if (!unformat(line_input, "%U %U",
unformat_ip4_address, &ip_addr,
unformat_vnet_sw_interface, vnm, &sw_if_index))
goto barf;
while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) {
if (unformat (line_input, "mac %U",
unformat_ethernet_address,
&mac_addr))
{
mac_addr_t *ma;
vec_add2 (mac_addrs, ma, 1);
clib_memcpy(ma, mac_addr, sizeof (mac_addr));
} else {
barf:
return clib_error_return (0, "unknown input `%U'",
format_unformat_error, input);
}
}
if (vec_len (mac_addrs) == 0)
goto barf;
/* Create / delete special interface route /32's */
next_hop.as_u32 = 0;
for (i = 0; i < vec_len(mac_addrs); i++) {
ip_adjacency_t adj;
u32 adj_index;
memset(&adj, 0, sizeof(adj));
adj.lookup_next_index = IP_LOOKUP_NEXT_REWRITE;
vnet_rewrite_for_sw_interface
(vnm,
VNET_L3_PACKET_TYPE_IP4,
sw_if_index,
ip4_rewrite_node.index,
&mac_addrs[i], /* destination address */
&adj.rewrite_header,
sizeof (adj.rewrite_data));
ip_add_adjacency (lm, &adj, 1 /* one adj */,
&adj_index);
f = (i + 1 < vec_len(mac_addrs)) ? IP4_ROUTE_FLAG_NOT_LAST_IN_GROUP : 0;
ip4_add_del_route_next_hop (im,
IP4_ROUTE_FLAG_ADD | f,
&ip_addr,
32 /* insert /32's */,
&next_hop,
sw_if_index,
1 /* weight */,
adj_index,
(u32)~0 /* explicit fib index */);
}
vec_free (mac_addrs);
return 0;
}
VLIB_CLI_COMMAND (virtual_ip_cmd_fn_command, static) = {
.path = "ip virtual",
.short_help = "ip virtual <addr> <interface> [mac <Mi>]+",
.function = virtual_ip_cmd_fn_command_fn,
};
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