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/*
*------------------------------------------------------------------
* flow_api.c - flow 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/fib/fib_table.h>
#include <vnet/ipfix-export/flow_report.h>
#include <vnet/ipfix-export/flow_report_classify.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 \
_(SET_IPFIX_EXPORTER, set_ipfix_exporter) \
_(IPFIX_EXPORTER_DUMP, ipfix_exporter_dump) \
_(SET_IPFIX_CLASSIFY_STREAM, set_ipfix_classify_stream) \
_(IPFIX_CLASSIFY_STREAM_DUMP, ipfix_classify_stream_dump) \
_(IPFIX_CLASSIFY_TABLE_ADD_DEL, ipfix_classify_table_add_del) \
_(IPFIX_CLASSIFY_TABLE_DUMP, ipfix_classify_table_dump)
static void
vl_api_set_ipfix_exporter_t_handler (vl_api_set_ipfix_exporter_t * mp)
{
vlib_main_t *vm = vlib_get_main ();
flow_report_main_t *frm = &flow_report_main;
vl_api_set_ipfix_exporter_reply_t *rmp;
ip4_address_t collector, src;
u16 collector_port = UDP_DST_PORT_ipfix;
u32 path_mtu;
u32 template_interval;
u8 udp_checksum;
u32 fib_id;
u32 fib_index = ~0;
int rv = 0;
memcpy (collector.data, mp->collector_address, sizeof (collector.data));
collector_port = ntohs (mp->collector_port);
if (collector_port == (u16) ~ 0)
collector_port = UDP_DST_PORT_ipfix;
memcpy (src.data, mp->src_address, sizeof (src.data));
fib_id = ntohl (mp->vrf_id);
ip4_main_t *im = &ip4_main;
if (fib_id == ~0)
{
fib_index = ~0;
}
else
{
uword *p = hash_get (im->fib_index_by_table_id, fib_id);
if (!p)
{
rv = VNET_API_ERROR_NO_SUCH_FIB;
goto out;
}
fib_index = p[0];
}
path_mtu = ntohl (mp->path_mtu);
if (path_mtu == ~0)
path_mtu = 512; // RFC 7011 section 10.3.3.
template_interval = ntohl (mp->template_interval);
if (template_interval == ~0)
template_interval = 20;
udp_checksum = mp->udp_checksum;
if (collector.as_u32 == 0)
{
rv = VNET_API_ERROR_INVALID_VALUE;
goto out;
}
if (src.as_u32 == 0)
{
rv = VNET_API_ERROR_INVALID_VALUE;
goto out;
}
if (path_mtu > 1450 /* vpp does not support fragmentation */ )
{
rv = VNET_API_ERROR_INVALID_VALUE;
goto out;
}
if (path_mtu < 68)
{
rv = VNET_API_ERROR_INVALID_VALUE;
goto out;
}
/* Reset report streams if we are reconfiguring IP addresses */
if (frm->ipfix_collector.as_u32 != collector.as_u32 ||
frm->src_address.as_u32 != src.as_u32 ||
frm->collector_port != collector_port)
vnet_flow_reports_reset (frm);
frm->ipfix_collector.as_u32 = collector.as_u32;
frm->collector_port = collector_port;
frm->src_address.as_u32 = src.as_u32;
frm->fib_index = fib_index;
frm->path_mtu = path_mtu;
frm->template_interval = template_interval;
frm->udp_checksum = udp_checksum;
/* Turn on the flow reporting process */
vlib_process_signal_event (vm, flow_report_process_node.index, 1, 0);
out:
REPLY_MACRO (VL_API_SET_IPFIX_EXPORTER_REPLY);
}
static void
vl_api_ipfix_exporter_dump_t_handler (vl_api_ipfix_exporter_dump_t * mp)
{
flow_report_main_t *frm = &flow_report_main;
vl_api_registration_t *reg;
vl_api_ipfix_exporter_details_t *rmp;
ip4_main_t *im = &ip4_main;
u32 vrf_id;
reg = vl_api_client_index_to_registration (mp->client_index);
if (!reg)
return;;
rmp = vl_msg_api_alloc (sizeof (*rmp));
clib_memset (rmp, 0, sizeof (*rmp));
rmp->_vl_msg_id = ntohs (VL_API_IPFIX_EXPORTER_DETAILS);
rmp->context = mp->context;
memcpy (rmp->collector_address, frm->ipfix_collector.data,
sizeof (frm->ipfix_collector.data));
rmp->collector_port = htons (frm->collector_port);
memcpy (rmp->src_address, frm->src_address.data,
sizeof (frm->src_address.data));
if (frm->fib_index == ~0)
vrf_id = ~0;
else
vrf_id = im->fibs[frm->fib_index].ft_table_id;
rmp->vrf_id = htonl (vrf_id);
rmp->path_mtu = htonl (frm->path_mtu);
rmp->template_interval = htonl (frm->template_interval);
rmp->udp_checksum = (frm->udp_checksum != 0);
vl_api_send_msg (reg, (u8 *) rmp);
}
static void
vl_api_set_ipfix_classify_stream_t_handler
(vl_api_set_ipfix_classify_stream_t * mp)
{
vl_api_set_ipfix_classify_stream_reply_t *rmp;
flow_report_classify_main_t *fcm = &flow_report_classify_main;
flow_report_main_t *frm = &flow_report_main;
u32 domain_id = 0;
u32 src_port = UDP_DST_PORT_ipfix;
int rv = 0;
domain_id = ntohl (mp->domain_id);
src_port = ntohs (mp->src_port);
if (fcm->src_port != 0 &&
(fcm->domain_id != domain_id || fcm->src_port != (u16) src_port))
{
int rv = vnet_stream_change (frm, fcm->domain_id, fcm->src_port,
domain_id, (u16) src_port);
ASSERT (rv == 0);
}
fcm->domain_id = domain_id;
fcm->src_port = (u16) src_port;
REPLY_MACRO (VL_API_SET_IPFIX_CLASSIFY_STREAM_REPLY);
}
static void
vl_api_ipfix_classify_stream_dump_t_handler
(vl_api_ipfix_classify_stream_dump_t * mp)
{
flow_report_classify_main_t *fcm = &flow_report_classify_main;
vl_api_registration_t *reg;
vl_api_ipfix_classify_stream_details_t *rmp;
reg = vl_api_client_index_to_registration (mp->client_index);
if (!reg)
return;
rmp = vl_msg_api_alloc (sizeof (*rmp));
clib_memset (rmp, 0, sizeof (*rmp));
rmp->_vl_msg_id = ntohs (VL_API_IPFIX_CLASSIFY_STREAM_DETAILS);
rmp->context = mp->context;
rmp->domain_id = htonl (fcm->domain_id);
rmp->src_port = htons (fcm->src_port);
vl_api_send_msg (reg, (u8 *) rmp);
}
static void
vl_api_ipfix_classify_table_add_del_t_handler
(vl_api_ipfix_classify_table_add_del_t * mp)
{
vl_api_ipfix_classify_table_add_del_reply_t *rmp;
flow_report_classify_main_t *fcm = &flow_report_classify_main;
flow_report_main_t *frm = &flow_report_main;
vnet_flow_report_add_del_args_t args;
ipfix_classify_table_t *table;
int is_add;
u32 classify_table_index;
u8 ip_version;
u8 transport_protocol;
int rv = 0;
classify_table_index = ntohl (mp->table_id);
ip_version = mp->ip_version;
transport_protocol = mp->transport_protocol;
is_add = mp->is_add;
if (fcm->src_port == 0)
{
/* call set_ipfix_classify_stream first */
rv = VNET_API_ERROR_UNSPECIFIED;
goto out;
}
clib_memset (&args, 0, sizeof (args));
table = 0;
int i;
for (i = 0; i < vec_len (fcm->tables); i++)
if (ipfix_classify_table_index_valid (i))
if (fcm->tables[i].classify_table_index == classify_table_index)
{
table = &fcm->tables[i];
break;
}
if (is_add)
{
if (table)
{
rv = VNET_API_ERROR_VALUE_EXIST;
goto out;
}
table = ipfix_classify_add_table ();
table->classify_table_index = classify_table_index;
}
else
{
if (!table)
{
rv = VNET_API_ERROR_NO_SUCH_ENTRY;
goto out;
}
}
table->ip_version = ip_version;
table->transport_protocol = transport_protocol;
args.opaque.as_uword = table - fcm->tables;
args.rewrite_callback = ipfix_classify_template_rewrite;
args.flow_data_callback = ipfix_classify_send_flows;
args.is_add = is_add;
args.domain_id = fcm->domain_id;
args.src_port = fcm->src_port;
rv = vnet_flow_report_add_del (frm, &args, NULL);
/* If deleting, or add failed */
if (is_add == 0 || (rv && is_add))
ipfix_classify_delete_table (table - fcm->tables);
out:
REPLY_MACRO (VL_API_SET_IPFIX_CLASSIFY_STREAM_REPLY);
}
static void
send_ipfix_classify_table_details (u32 table_index,
vl_api_registration_t * reg, u32 context)
{
flow_report_classify_main_t *fcm = &flow_report_classify_main;
vl_api_ipfix_classify_table_details_t *mp;
ipfix_classify_table_t *table = &fcm->tables[table_index];
mp = vl_msg_api_alloc (sizeof (*mp));
clib_memset (mp, 0, sizeof (*mp));
mp->_vl_msg_id = ntohs (VL_API_IPFIX_CLASSIFY_TABLE_DETAILS);
mp->context = context;
mp->table_id = htonl (table->classify_table_index);
mp->ip_version = table->ip_version;
mp->transport_protocol = table->transport_protocol;
vl_api_send_msg (reg, (u8 *) mp);
}
static void
vl_api_ipfix_classify_table_dump_t_handler
(vl_api_ipfix_classify_table_dump_t * mp)
{
flow_report_classify_main_t *fcm = &flow_report_classify_main;
vl_api_registration_t *reg;
u32 i;
reg = vl_api_client_index_to_registration (mp->client_index);
if (!reg)
return;
for (i = 0; i < vec_len (fcm->tables); i++)
if (ipfix_classify_table_index_valid (i))
send_ipfix_classify_table_details (i, reg, mp->context);
}
/*
* flow_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()
*/
#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_ipfix_export;
#undef _
}
static clib_error_t *
flow_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 (flow_api_hookup);
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/