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/*
*------------------------------------------------------------------
* lldp_api.c - lldp api
*
* Copyright (c) 2017 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 <lldp/lldp.h>
#include <lldp/lldp_node.h>
#include <vnet/ip/ip4_packet.h>
#include <vnet/ip/ip6_packet.h>
#include <vnet/ip/ip_types_api.h>
/* define message IDs */
#include <vnet/format_fns.h>
#include <lldp/lldp.api_enum.h>
#include <lldp/lldp.api_types.h>
/**
* Base message ID fot the plugin
*/
static u32 lldp_base_msg_id;
#define REPLY_MSG_ID_BASE lldp_base_msg_id
#include <vlibapi/api_helper_macros.h>
static void
vl_api_lldp_config_t_handler (vl_api_lldp_config_t *mp)
{
vl_api_lldp_config_reply_t *rmp;
int rv = 0;
u8 *sys_name = 0;
sys_name = vl_api_from_api_to_new_vec (mp, &mp->system_name);
if (lldp_cfg_set (&sys_name, ntohl (mp->tx_hold), ntohl (mp->tx_interval)) !=
lldp_ok)
{
vec_free (sys_name);
rv = VNET_API_ERROR_INVALID_VALUE;
}
REPLY_MACRO (VL_API_LLDP_CONFIG_REPLY);
}
static void
vl_api_sw_interface_set_lldp_t_handler (vl_api_sw_interface_set_lldp_t *mp)
{
vl_api_sw_interface_set_lldp_reply_t *rmp;
int rv = 0;
u8 *mgmt_oid = 0, *mgmt_ip4 = 0, *mgmt_ip6 = 0;
char *port_desc = 0;
u8 no_data[128] = { 0 };
ip4_address_t ip4;
ip6_address_t ip6;
if (vl_api_string_len (&mp->port_desc) > 0)
{
port_desc = vl_api_from_api_to_new_c_string (&mp->port_desc);
}
ip4_address_decode (mp->mgmt_ip4, &ip4);
if (ip4.as_u32 != 0)
{
vec_validate (mgmt_ip4, sizeof (ip4_address_t) - 1);
clib_memcpy (mgmt_ip4, &ip4, sizeof (ip4));
}
ip6_address_decode (mp->mgmt_ip6, &ip6);
if (!ip6_address_is_zero (&ip6))
{
vec_validate (mgmt_ip6, sizeof (ip6_address_t) - 1);
clib_memcpy (mgmt_ip6, &ip6, sizeof (ip6));
}
if (memcmp (mp->mgmt_oid, no_data, strlen ((char *) mp->mgmt_oid)) != 0)
{
vec_validate (mgmt_oid, strlen ((char *) mp->mgmt_oid) - 1);
strncpy ((char *) mgmt_oid, (char *) mp->mgmt_oid, vec_len (mgmt_oid));
}
VALIDATE_SW_IF_INDEX (mp);
if (lldp_cfg_intf_set (ntohl (mp->sw_if_index), (u8 **) &port_desc,
&mgmt_ip4, &mgmt_ip6, &mgmt_oid,
mp->enable) != lldp_ok)
{
vec_free (port_desc);
vec_free (mgmt_ip4);
vec_free (mgmt_ip6);
vec_free (mgmt_oid);
rv = VNET_API_ERROR_INVALID_VALUE;
}
BAD_SW_IF_INDEX_LABEL;
REPLY_MACRO (VL_API_SW_INTERFACE_SET_LLDP_REPLY);
}
static void
send_lldp (u32 index, vl_api_registration_t *rp, u32 context)
{
vl_api_lldp_details_t *rmp = 0;
vnet_main_t *vnm = &vnet_main;
lldp_main_t *lm = &lldp_main;
const lldp_intf_t *n = vec_elt_at_index (lm->intfs, index);
const vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, n->hw_if_index);
REPLY_MACRO_DETAILS4_END (
VL_API_LLDP_DETAILS, rp, context, ({
rmp->sw_if_index = hw->sw_if_index;
rmp->last_heard = n->last_heard;
rmp->last_sent = n->last_sent;
rmp->ttl = n->ttl;
rmp->port_id_subtype = (vl_api_port_id_subtype_t) n->port_id_subtype;
rmp->chassis_id_subtype =
(vl_api_chassis_id_subtype_t) n->chassis_id_subtype;
rmp->chassis_id_len = vec_len (n->chassis_id);
clib_memcpy (&rmp->chassis_id, n->chassis_id, rmp->chassis_id_len);
rmp->port_id_len = vec_len (n->port_id);
clib_memcpy (&rmp->port_id, n->port_id, rmp->port_id_len);
}));
}
static void
vl_api_lldp_dump_t_handler (vl_api_lldp_dump_t *mp)
{
int rv = 0;
lldp_main_t *lm = &lldp_main;
vl_api_lldp_dump_reply_t *rmp;
REPLY_AND_DETAILS_MACRO_END (VL_API_LLDP_DUMP_REPLY, lm->intfs,
({ send_lldp (cursor, rp, mp->context); }));
}
/*
* * lldp_api_hookup
* * Add vpe's API message handlers to the table.
* * vlib has already mapped shared memory and
* * added the client registration handlers.
* * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process()
* */
#include <lldp/lldp.api.c>
static clib_error_t *
lldp_api_hookup (vlib_main_t *vm)
{
/*
* Set up the (msg_name, crc, message-id) table
*/
lldp_base_msg_id = setup_message_id_table ();
return 0;
}
VLIB_API_INIT_FUNCTION (lldp_api_hookup);
#include <vlib/unix/plugin.h>
#include <vpp/app/version.h>
VLIB_PLUGIN_REGISTER () = {
.version = VPP_BUILD_VER,
.description = "Link Layer Discovery Protocol (LLDP)",
};
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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