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/*
* Copyright (c) 2018-2019 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/udp/udp_local.h>
#include <vnet/udp/udp_encap.h>
#include <vnet/fib/fib_table.h>
#include <vnet/ip/ip_types_api.h>
#include <vnet/udp/udp.h>
#include <vnet/format_fns.h>
#include <vnet/udp/udp.api_enum.h>
#include <vnet/udp/udp.api_types.h>
#define REPLY_MSG_ID_BASE udp_main.msg_id_base
#include <vlibapi/api_helper_macros.h>
static void
send_udp_encap_details (const udp_encap_t * ue, vl_api_registration_t * reg,
u32 context)
{
vl_api_udp_encap_details_t *mp;
mp = vl_msg_api_alloc (sizeof (*mp));
clib_memset (mp, 0, sizeof (*mp));
mp->_vl_msg_id = ntohs (REPLY_MSG_ID_BASE + VL_API_UDP_ENCAP_DETAILS);
mp->context = context;
if (FIB_PROTOCOL_IP4 == ue->ue_ip_proto)
{
clib_memcpy (&mp->udp_encap.src_ip.un.ip4,
&ue->ue_hdrs.ip4.ue_ip4.src_address, 4);
clib_memcpy (&mp->udp_encap.dst_ip.un.ip4,
&ue->ue_hdrs.ip4.ue_ip4.dst_address, 4);
mp->udp_encap.dst_ip.af = ip_address_family_encode (AF_IP4);
mp->udp_encap.src_ip.af = ip_address_family_encode (AF_IP4);
/* ports aren't byte swapped because they are stored in network
* byte order */
mp->udp_encap.src_port = ue->ue_hdrs.ip4.ue_udp.src_port;
mp->udp_encap.dst_port = ue->ue_hdrs.ip4.ue_udp.dst_port;
}
else
{
clib_memcpy (&mp->udp_encap.src_ip.un.ip6,
&ue->ue_hdrs.ip6.ue_ip6.src_address, 16);
clib_memcpy (&mp->udp_encap.dst_ip.un.ip6,
&ue->ue_hdrs.ip6.ue_ip6.dst_address, 16);
mp->udp_encap.dst_ip.af = ip_address_family_encode (AF_IP6);
mp->udp_encap.src_ip.af = ip_address_family_encode (AF_IP6);
/* ports aren't byte swapped because they are stored in network
* byte order */
mp->udp_encap.src_port = ue->ue_hdrs.ip6.ue_udp.src_port;
mp->udp_encap.dst_port = ue->ue_hdrs.ip6.ue_udp.dst_port;
}
mp->udp_encap.table_id =
htonl (fib_table_get_table_id (ue->ue_fib_index, ue->ue_ip_proto));
mp->udp_encap.id = htonl (ue - udp_encap_pool);
vl_api_send_msg (reg, (u8 *) mp);
}
static void
vl_api_udp_encap_dump_t_handler (vl_api_udp_encap_dump_t *mp)
{
vl_api_registration_t *reg;
udp_encap_t *ue;
reg = vl_api_client_index_to_registration (mp->client_index);
if (!reg)
return;
pool_foreach (ue, udp_encap_pool)
{
send_udp_encap_details(ue, reg, mp->context);
}
}
static void
vl_api_udp_encap_add_t_handler (vl_api_udp_encap_add_t *mp)
{
vl_api_udp_encap_add_reply_t *rmp;
ip46_address_t src_ip, dst_ip;
udp_encap_fixup_flags_t flags;
u32 fib_index, table_id;
fib_protocol_t fproto;
ip46_type_t itype;
index_t uei;
int rv = 0;
uei = INDEX_INVALID;
table_id = ntohl (mp->udp_encap.table_id);
itype = ip_address_decode (&mp->udp_encap.src_ip, &src_ip);
itype = ip_address_decode (&mp->udp_encap.dst_ip, &dst_ip);
fproto = fib_proto_from_ip46 (itype);
fib_index = fib_table_find (fproto, table_id);
if (~0 == fib_index)
{
rv = VNET_API_ERROR_NO_SUCH_TABLE;
goto done;
}
flags = UDP_ENCAP_FIXUP_NONE;
if (mp->udp_encap.src_port == 0)
flags |= UDP_ENCAP_FIXUP_UDP_SRC_PORT_ENTROPY;
uei = udp_encap_add_and_lock (fproto, fib_index, &src_ip, &dst_ip,
ntohs (mp->udp_encap.src_port),
ntohs (mp->udp_encap.dst_port), flags);
done:
REPLY_MACRO2 (VL_API_UDP_ENCAP_ADD_REPLY,
({
rmp->id = ntohl (uei);
}));
}
static void
vl_api_udp_encap_del_t_handler (vl_api_udp_encap_del_t *mp)
{
vl_api_udp_encap_del_reply_t *rmp;
int rv = 0;
udp_encap_unlock (ntohl (mp->id));
REPLY_MACRO (VL_API_UDP_ENCAP_DEL_REPLY);
}
u32
udp_api_decap_proto_to_index (vlib_main_t *vm,
vl_api_udp_decap_next_proto_t iproto)
{
switch (iproto)
{
case UDP_API_DECAP_PROTO_IP4:
return vlib_get_node_by_name (vm, (u8 *) "ip4-input")->index;
case UDP_API_DECAP_PROTO_IP6:
return vlib_get_node_by_name (vm, (u8 *) "ip6-input")->index;
case UDP_API_DECAP_PROTO_MPLS:
return vlib_get_node_by_name (vm, (u8 *) "mpls-input")->index;
}
return ~0;
}
static void
vl_api_udp_decap_add_del_t_handler (vl_api_udp_decap_add_del_t *mp)
{
vl_api_udp_decap_add_del_reply_t *rmp;
vlib_main_t *vm = vlib_get_main ();
int rv = 0;
if (mp->is_add)
{
u32 node_index =
udp_api_decap_proto_to_index (vm, ntohl (mp->udp_decap.next_proto));
if (node_index == ~0)
rv = VNET_API_ERROR_INVALID_PROTOCOL;
else
udp_register_dst_port (vm, ntohs (mp->udp_decap.port), node_index,
mp->udp_decap.is_ip4);
}
else
udp_unregister_dst_port (vm, ntohs (mp->udp_decap.port),
mp->udp_decap.is_ip4);
REPLY_MACRO (VL_API_UDP_DECAP_ADD_DEL_REPLY);
}
#include <vnet/udp/udp.api.c>
static clib_error_t *
udp_api_hookup (vlib_main_t * vm)
{
api_main_t *am = vlibapi_get_main ();
/*
* Set up the (msg_name, crc, message-id) table
*/
REPLY_MSG_ID_BASE = setup_message_id_table ();
/* Mark these APIs as mp safe */
vl_api_set_msg_thread_safe (am, REPLY_MSG_ID_BASE + VL_API_UDP_ENCAP_ADD, 1);
vl_api_set_msg_thread_safe (am, REPLY_MSG_ID_BASE + VL_API_UDP_ENCAP_DEL, 1);
vl_api_set_msg_thread_safe (am, REPLY_MSG_ID_BASE + VL_API_UDP_ENCAP_DUMP,
1);
return 0;
}
VLIB_API_INIT_FUNCTION (udp_api_hookup);
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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