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/*
*------------------------------------------------------------------
* l2tp_api.c - l2tpv3 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 <l2tp/l2tp.h>
#include <vnet/ip/ip_types_api.h>
/* define message IDs */
#include <vnet/format_fns.h>
#include <l2tp/l2tp.api_enum.h>
#include <l2tp/l2tp.api_types.h>
/**
* Base message ID fot the plugin
*/
static u32 l2tp_base_msg_id;
#define REPLY_MSG_ID_BASE l2tp_base_msg_id
#include <vlibapi/api_helper_macros.h>
static void
send_sw_if_l2tpv3_tunnel_details (vpe_api_main_t * am,
vl_api_registration_t * reg,
l2t_session_t * s,
l2t_main_t * lm, u32 context)
{
vl_api_sw_if_l2tpv3_tunnel_details_t *mp;
u8 *if_name = NULL;
vnet_sw_interface_t *si = NULL;
si = vnet_get_hw_sw_interface (lm->vnet_main, s->hw_if_index);
if_name = format (if_name, "%U",
format_vnet_sw_interface_name, lm->vnet_main, si);
mp = vl_msg_api_alloc (sizeof (*mp));
clib_memset (mp, 0, sizeof (*mp));
mp->_vl_msg_id =
ntohs (VL_API_SW_IF_L2TPV3_TUNNEL_DETAILS + REPLY_MSG_ID_BASE);
strncpy ((char *) mp->interface_name, (char *) if_name,
ARRAY_LEN (mp->interface_name) - 1);
mp->sw_if_index = ntohl (si->sw_if_index);
mp->local_session_id = s->local_session_id;
mp->remote_session_id = s->remote_session_id;
mp->local_cookie[0] = s->local_cookie[0];
mp->local_cookie[1] = s->local_cookie[1];
mp->remote_cookie = s->remote_cookie;
ip_address_encode ((ip46_address_t *) & s->client_address, IP46_TYPE_IP6,
&mp->client_address);
ip_address_encode ((ip46_address_t *) & s->our_address, IP46_TYPE_IP6,
&mp->our_address);
mp->l2_sublayer_present = s->l2_sublayer_present;
mp->context = context;
vl_api_send_msg (reg, (u8 *) mp);
}
static void
vl_api_sw_if_l2tpv3_tunnel_dump_t_handler (vl_api_sw_if_l2tpv3_tunnel_dump_t *
mp)
{
vpe_api_main_t *am = &vpe_api_main;
l2t_main_t *lm = &l2t_main;
vl_api_registration_t *reg;
l2t_session_t *session;
reg = vl_api_client_index_to_registration (mp->client_index);
if (!reg)
return;
pool_foreach (session, lm->sessions)
{
send_sw_if_l2tpv3_tunnel_details (am, reg, session, lm, mp->context);
}
}
static void vl_api_l2tpv3_create_tunnel_t_handler
(vl_api_l2tpv3_create_tunnel_t * mp)
{
vl_api_l2tpv3_create_tunnel_reply_t *rmp;
l2t_main_t *lm = &l2t_main;
u32 sw_if_index = (u32) ~ 0;
int rv;
ip46_address_t client, our;
if (mp->our_address.af == ADDRESS_IP4)
{
rv = VNET_API_ERROR_UNIMPLEMENTED;
goto out;
}
u32 encap_fib_index;
if (mp->encap_vrf_id != ~0)
{
uword *p;
ip6_main_t *im = &ip6_main;
if (!
(p =
hash_get (im->fib_index_by_table_id, ntohl (mp->encap_vrf_id))))
{
rv = VNET_API_ERROR_NO_SUCH_FIB;
goto out;
}
encap_fib_index = p[0];
}
else
{
encap_fib_index = ~0;
}
ip_address_decode (&mp->client_address, &client);
ip_address_decode (&mp->our_address, &our);
rv = create_l2tpv3_ipv6_tunnel (lm,
&client.ip6,
&our.ip6,
ntohl (mp->local_session_id),
ntohl (mp->remote_session_id),
clib_net_to_host_u64 (mp->local_cookie),
clib_net_to_host_u64 (mp->remote_cookie),
mp->l2_sublayer_present,
encap_fib_index, &sw_if_index);
out:
REPLY_MACRO2(VL_API_L2TPV3_CREATE_TUNNEL_REPLY,
({
rmp->sw_if_index = ntohl (sw_if_index);
}));
}
static void vl_api_l2tpv3_set_tunnel_cookies_t_handler
(vl_api_l2tpv3_set_tunnel_cookies_t * mp)
{
vl_api_l2tpv3_set_tunnel_cookies_reply_t *rmp;
l2t_main_t *lm = &l2t_main;
int rv;
VALIDATE_SW_IF_INDEX (mp);
rv = l2tpv3_set_tunnel_cookies (lm, ntohl (mp->sw_if_index),
clib_net_to_host_u64 (mp->new_local_cookie),
clib_net_to_host_u64
(mp->new_remote_cookie));
BAD_SW_IF_INDEX_LABEL;
REPLY_MACRO (VL_API_L2TPV3_SET_TUNNEL_COOKIES_REPLY);
}
static void vl_api_l2tpv3_interface_enable_disable_t_handler
(vl_api_l2tpv3_interface_enable_disable_t * mp)
{
int rv;
vnet_main_t *vnm = vnet_get_main ();
vl_api_l2tpv3_interface_enable_disable_reply_t *rmp;
VALIDATE_SW_IF_INDEX (mp);
rv = l2tpv3_interface_enable_disable
(vnm, ntohl (mp->sw_if_index), mp->enable_disable);
BAD_SW_IF_INDEX_LABEL;
REPLY_MACRO (VL_API_L2TPV3_INTERFACE_ENABLE_DISABLE_REPLY);
}
static void vl_api_l2tpv3_set_lookup_key_t_handler
(vl_api_l2tpv3_set_lookup_key_t * mp)
{
int rv = 0;
l2t_main_t *lm = &l2t_main;
vl_api_l2tpv3_set_lookup_key_reply_t *rmp;
if (mp->key > L2T_LOOKUP_KEY_API_SESSION_ID)
{
rv = VNET_API_ERROR_INVALID_VALUE;
goto out;
}
lm->lookup_type = (ip6_to_l2_lookup_t) mp->key;
out:
REPLY_MACRO (VL_API_L2TPV3_SET_LOOKUP_KEY_REPLY);
}
/*
* l2tp_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 <l2tp/l2tp.api.c>
static clib_error_t *
l2tp_api_hookup (vlib_main_t * vm)
{
/*
* Set up the (msg_name, crc, message-id) table
*/
l2tp_base_msg_id = setup_message_id_table ();
return 0;
}
VLIB_API_INIT_FUNCTION (l2tp_api_hookup);
#include <vlib/unix/plugin.h>
#include <vpp/app/version.h>
VLIB_PLUGIN_REGISTER () = {
.version = VPP_BUILD_VER,
.description = "Layer 2 Tunneling Protocol v3 (L2TP)",
};
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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