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/*
*------------------------------------------------------------------
* dhcp_api.c - dhcp api
*
* Copyright (c) 2016 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/vnet.h>
#include <vlibmemory/api.h>
#include <vnet/interface.h>
#include <vnet/api_errno.h>
#include <vnet/dhcp/dhcp_proxy.h>
#include <vnet/dhcp/client.h>
#include <vnet/fib/fib_table.h>
#include <vnet/vnet_msg_enum.h>
#define vl_typedefs /* define message structures */
#include <vnet/vnet_all_api_h.h>
#undef vl_typedefs
#define vl_endianfun /* define message structures */
#include <vnet/vnet_all_api_h.h>
#undef vl_endianfun
/* instantiate all the print functions we know about */
#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
#define vl_printfun
#include <vnet/vnet_all_api_h.h>
#undef vl_printfun
#include <vlibapi/api_helper_macros.h>
#define foreach_vpe_api_msg \
_(DHCP_PROXY_CONFIG,dhcp_proxy_config) \
_(DHCP_PROXY_DUMP,dhcp_proxy_dump) \
_(DHCP_PROXY_SET_VSS,dhcp_proxy_set_vss) \
_(DHCP_CLIENT_CONFIG, dhcp_client_config)
static void
vl_api_dhcp_proxy_set_vss_t_handler (vl_api_dhcp_proxy_set_vss_t * mp)
{
vl_api_dhcp_proxy_set_vss_reply_t *rmp;
int rv;
rv = dhcp_proxy_set_vss ((mp->is_ipv6 ?
FIB_PROTOCOL_IP6 :
FIB_PROTOCOL_IP4),
ntohl (mp->tbl_id),
ntohl (mp->oui),
ntohl (mp->fib_id), (int) mp->is_add == 0);
REPLY_MACRO (VL_API_DHCP_PROXY_SET_VSS_REPLY);
}
static void vl_api_dhcp_proxy_config_t_handler
(vl_api_dhcp_proxy_config_t * mp)
{
vl_api_dhcp_proxy_set_vss_reply_t *rmp;
ip46_address_t src, server;
int rv = -1;
if (mp->is_ipv6)
{
clib_memcpy (&src.ip6, mp->dhcp_src_address, sizeof (src.ip6));
clib_memcpy (&server.ip6, mp->dhcp_server, sizeof (server.ip6));
rv = dhcp6_proxy_set_server (&server,
&src,
(u32) ntohl (mp->rx_vrf_id),
(u32) ntohl (mp->server_vrf_id),
(int) (mp->is_add == 0));
}
else
{
ip46_address_reset (&src);
ip46_address_reset (&server);
clib_memcpy (&src.ip4, mp->dhcp_src_address, sizeof (src.ip4));
clib_memcpy (&server.ip4, mp->dhcp_server, sizeof (server.ip4));
rv = dhcp4_proxy_set_server (&server,
&src,
(u32) ntohl (mp->rx_vrf_id),
(u32) ntohl (mp->server_vrf_id),
(int) (mp->is_add == 0));
}
REPLY_MACRO (VL_API_DHCP_PROXY_CONFIG_REPLY);
}
static void
vl_api_dhcp_proxy_dump_t_handler (vl_api_dhcp_proxy_dump_t * mp)
{
unix_shared_memory_queue_t *q;
q = vl_api_client_index_to_input_queue (mp->client_index);
if (q == 0)
return;
dhcp_proxy_dump ((mp->is_ip6 == 1 ?
FIB_PROTOCOL_IP6 : FIB_PROTOCOL_IP4), q, mp->context);
}
void
dhcp_send_details (fib_protocol_t proto,
void *opaque, u32 context, dhcp_proxy_t * proxy)
{
vl_api_dhcp_proxy_details_t *mp;
unix_shared_memory_queue_t *q = opaque;
vl_api_dhcp_server_t *v_server;
dhcp_server_t *server;
fib_table_t *s_fib;
dhcp_vss_t *vss;
u32 count;
size_t n;
count = vec_len (proxy->dhcp_servers);
n = sizeof (*mp) + (count * sizeof (vl_api_dhcp_server_t));
mp = vl_msg_api_alloc (n);
if (!mp)
return;
memset (mp, 0, n);
mp->_vl_msg_id = ntohs (VL_API_DHCP_PROXY_DETAILS);
mp->context = context;
mp->count = count;
mp->is_ipv6 = (proto == FIB_PROTOCOL_IP6);
mp->rx_vrf_id =
htonl (dhcp_proxy_rx_table_get_table_id (proto, proxy->rx_fib_index));
vss = dhcp_get_vss_info (&dhcp_proxy_main, proxy->rx_fib_index, proto);
if (NULL != vss)
{
mp->vss_oui = htonl (vss->oui);
mp->vss_fib_id = htonl (vss->fib_id);
}
vec_foreach_index (count, proxy->dhcp_servers)
{
server = &proxy->dhcp_servers[count];
v_server = &mp->servers[count];
s_fib = fib_table_get (server->server_fib_index, proto);
v_server->server_vrf_id = htonl (s_fib->ft_table_id);
if (mp->is_ipv6)
{
memcpy (v_server->dhcp_server, &server->dhcp_server.ip6, 16);
}
else
{
/* put the address in the first bytes */
memcpy (v_server->dhcp_server, &server->dhcp_server.ip4, 4);
}
}
if (mp->is_ipv6)
{
memcpy (mp->dhcp_src_address, &proxy->dhcp_src_address.ip6, 16);
}
else
{
/* put the address in the first bytes */
memcpy (mp->dhcp_src_address, &proxy->dhcp_src_address.ip4, 4);
}
vl_msg_api_send_shmem (q, (u8 *) & mp);
}
void
dhcp_compl_event_callback (u32 client_index, u32 pid, u8 * hostname,
u8 is_ipv6, u8 * host_address, u8 * router_address,
u8 * host_mac)
{
unix_shared_memory_queue_t *q;
vl_api_dhcp_compl_event_t *mp;
q = vl_api_client_index_to_input_queue (client_index);
if (!q)
return;
mp = vl_msg_api_alloc (sizeof (*mp));
mp->client_index = client_index;
mp->pid = pid;
mp->is_ipv6 = is_ipv6;
clib_memcpy (&mp->hostname, hostname, vec_len (hostname));
mp->hostname[vec_len (hostname) + 1] = '\n';
clib_memcpy (&mp->host_address[0], host_address, 16);
clib_memcpy (&mp->router_address[0], router_address, 16);
if (NULL != host_mac)
clib_memcpy (&mp->host_mac[0], host_mac, 6);
mp->_vl_msg_id = ntohs (VL_API_DHCP_COMPL_EVENT);
vl_msg_api_send_shmem (q, (u8 *) & mp);
}
static void vl_api_dhcp_client_config_t_handler
(vl_api_dhcp_client_config_t * mp)
{
vlib_main_t *vm = vlib_get_main ();
vl_api_dhcp_client_config_reply_t *rmp;
int rv = 0;
VALIDATE_SW_IF_INDEX (mp);
rv = dhcp_client_config (vm, ntohl (mp->sw_if_index),
mp->hostname, mp->is_add, mp->client_index,
mp->want_dhcp_event ? dhcp_compl_event_callback :
NULL, mp->pid);
BAD_SW_IF_INDEX_LABEL;
REPLY_MACRO (VL_API_DHCP_CLIENT_CONFIG_REPLY);
}
/*
* dhcp_api_hookup
* Add vpe's API message handlers to the table.
* vlib has alread mapped shared memory and
* added the client registration handlers.
* See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process()
*/
#define vl_msg_name_crc_list
#include <vnet/vnet_all_api_h.h>
#undef vl_msg_name_crc_list
static void
setup_message_id_table (api_main_t * am)
{
#define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
foreach_vl_msg_name_crc_dhcp;
#undef _
}
static clib_error_t *
dhcp_api_hookup (vlib_main_t * vm)
{
api_main_t *am = &api_main;
#define _(N,n) \
vl_msg_api_set_handlers(VL_API_##N, #n, \
vl_api_##n##_t_handler, \
vl_noop_handler, \
vl_api_##n##_t_endian, \
vl_api_##n##_t_print, \
sizeof(vl_api_##n##_t), 1);
foreach_vpe_api_msg;
#undef _
/*
* Set up the (msg_name, crc, message-id) table
*/
setup_message_id_table (am);
return 0;
}
VLIB_API_INIT_FUNCTION (dhcp_api_hookup);
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/