/*
*------------------------------------------------------------------
* mpls_api.c - mpls 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/mpls/mpls.h>
#include <vnet/mpls/mpls_tunnel.h>
#include <vnet/fib/fib_table.h>
#include <vnet/fib/fib_api.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 \
_(MPLS_IP_BIND_UNBIND, mpls_ip_bind_unbind) \
_(MPLS_ROUTE_ADD_DEL, mpls_route_add_del) \
_(MPLS_TUNNEL_ADD_DEL, mpls_tunnel_add_del) \
_(MPLS_TUNNEL_DUMP, mpls_tunnel_dump) \
_(MPLS_TUNNEL_DETAILS, mpls_tunnel_details) \
_(MPLS_FIB_DUMP, mpls_fib_dump) \
_(MPLS_FIB_DETAILS, mpls_fib_details)
extern void stats_dslock_with_hint (int hint, int tag);
extern void stats_dsunlock (void);
static int
mpls_ip_bind_unbind_handler (vnet_main_t * vnm,
vl_api_mpls_ip_bind_unbind_t * mp)
{
u32 mpls_fib_index, ip_fib_index;
mpls_fib_index =
fib_table_find (FIB_PROTOCOL_MPLS, ntohl (mp->mb_mpls_table_id));
if (~0 == mpls_fib_index)
{
if (mp->mb_create_table_if_needed)
{
mpls_fib_index =
fib_table_find_or_create_and_lock (FIB_PROTOCOL_MPLS,
ntohl (mp->mb_mpls_table_id));
}
else
return VNET_API_ERROR_NO_SUCH_FIB;
}
ip_fib_index = fib_table_find ((mp->mb_is_ip4 ?
FIB_PROTOCOL_IP4 :
FIB_PROTOCOL_IP6),
ntohl (mp->mb_ip_table_id));
if (~0 == ip_fib_index)
return VNET_API_ERROR_NO_SUCH_FIB;
fib_prefix_t pfx = {
.fp_len = mp->mb_address_length,
};
if (mp->mb_is_ip4)
{
pfx.fp_proto = FIB_PROTOCOL_IP4;
clib_memcpy (&pfx.fp_addr.ip4, mp->mb_address,
sizeof (pfx.fp_addr.ip4));
}
else
{
pfx.fp_proto = FIB_PROTOCOL_IP6;
clib_memcpy (&pfx.fp_addr.ip6, mp->mb_address,
sizeof (pfx.fp_addr.ip6));
}
if (mp->mb_is_bind)
fib_table_entry_local_label_add (ip_fib_index, &pfx,
ntohl (mp->mb_label));
else
fib_table_entry_local_label_remove (ip_fib_index, &pfx,
ntohl (mp->mb_label));
return (0);
}
void
vl_api_mpls_ip_bind_unbind_t_handler (vl_api_mpls_ip_bind_unbind_t * mp)
{
vl_api_mpls_ip_bind_unbind_reply_t *rmp;
vnet_main_t *vnm;
int rv;
vnm = vnet_get_main ();
vnm->api_errno = 0;
rv = mpls_ip_bind_unbind_handler (vnm, mp);
rv = (rv == 0) ? vnm->api_errno : rv;
REPLY_MACRO (VL_API_MPLS_IP_BIND_UNBIND_REPLY);
}
static int
mpls_route_add_del_t_handler (vnet_main_t * vnm,
vl_api_mpls_route_add_del_t * mp)
{
u32 fib_index, next_hop_fib_index;
mpls_label_t *label_stack = NULL;
int rv, ii, n_labels;;
fib_prefix_t pfx = {
.fp_len = 21,
.fp_proto = FIB_PROTOCOL_MPLS,
.fp_eos = mp->mr_eos,
.fp_label = ntohl (mp->mr_label),
};
if (pfx.fp_eos)
{
if (mp->mr_next_hop_proto_is_ip4)
{
pfx.fp_payload_proto = DPO_PROTO_IP4;
}
else
{
pfx.fp_payload_proto = DPO_PROTO_IP6;
}
}
else
{
pfx.fp_payload_proto = DPO_PROTO_MPLS;
}
rv = add_del_route_check (FIB_PROTOCOL_MPLS,
mp->mr_table_id,
mp->mr_next_hop_sw_if_index,
dpo_proto_to_fib (pfx.fp_payload_proto),
mp->mr_next_hop_table_id,
mp->mr_create_table_if_needed,
&fib_index, &next_hop_fib_index);
if (0 != rv)
return (rv);
ip46_address_t nh;
memset (&nh, 0, sizeof (nh));
if (mp->mr_next_hop_proto_is_ip4)
memcpy (&nh.ip4, mp->mr_next_hop, sizeof (nh.ip4));
else
memcpy (&nh.ip6, mp->mr_next_hop, sizeof (nh.ip6));
n_labels = mp->mr_next_hop_n_out_labels;
if (n_labels == 0)
;
else if (1 == n_labels)
vec_add1 (label_stack, ntohl (mp->mr_next_hop_out_label_stack[0]));
else
{
vec_validate (label_stack, n_labels - 1);
for (ii = 0; ii < n_labels; ii++)
label_stack[ii] = ntohl (mp->mr_next_hop_out_label_stack[ii]);
}
return (add_del_route_t_handler (mp->mr_is_multipath, mp->mr_is_add, 0, // mp->is_drop,
0, // mp->is_unreach,
0, // mp->is_prohibit,
0, // mp->is_local,
mp->mr_is_classify,
mp->mr_classify_table_index,
mp->mr_is_resolve_host,
mp->mr_is_resolve_attached,
fib_index, &pfx,
mp->mr_next_hop_proto_is_ip4,
&nh, ntohl (mp->mr_next_hop_sw_if_index),
next_hop_fib_index,
mp->mr_next_hop_weight,
ntohl (mp->mr_next_hop_via_label),
label_stack));
}
void
vl_api_mpls_route_add_del_t_handler (vl_api_mpls_route_add_del_t * mp)
{
vl_api_mpls_route_add_del_reply_t *rmp;
vnet_main_t *vnm;
int rv;
vnm = vnet_get_main ();
vnm->api_errno = 0;
rv = mpls_route_add_del_t_handler (vnm, mp);
rv = (rv == 0) ? vnm->api_errno : rv;
REPLY_MACRO (VL_API_MPLS_ROUTE_ADD_DEL_REPLY);
}
static void
vl_api_mpls_tunnel_add_del_t_handler (vl_api_mpls_tunnel_add_del_t * mp)
{
vl_api_mpls_tunnel_add_del_reply_t *rmp;
int rv = 0;
u32 tunnel_sw_if_index;
int ii;
stats_dslock_with_hint (1 /* release hint */ , 5 /* tag */ );
if (mp->mt_is_add)
{
fib_route_path_t rpath, *rpaths = NULL;
mpls_label_t *label_stack = NULL;
memset (&rpath, 0, sizeof (rpath));
if (mp->mt_next_hop_proto_is_ip4)
{
rpath.frp_proto = FIB_PROTOCOL_IP4;
clib_memcpy (&rpath.frp_addr.ip4,
mp->mt_next_hop, sizeof (rpath.frp_addr.ip4));
}
else
{
rpath.frp_proto = FIB_PROTOCOL_IP6;
clib_memcpy (&rpath.frp_addr.ip6,
mp->mt_next_hop, sizeof (rpath.frp_addr.ip6));
}
rpath.frp_sw_if_index = ntohl (mp->mt_next_hop_sw_if_index);
for (ii = 0; ii < mp->mt_next_hop_n_out_labels; ii++)
vec_add1 (label_stack, ntohl (mp->mt_next_hop_out_label_stack[ii]));
vec_add1 (rpaths, rpath);
vnet_mpls_tunnel_add (rpaths, label_stack,
mp->mt_l2_only, &tunnel_sw_if_index);
vec_free (rpaths);
vec_free (label_stack);
}
else
{
tunnel_sw_if_index = ntohl (mp->mt_sw_if_index);
vnet_mpls_tunnel_del (tunnel_sw_if_index);
}
stats_dsunlock ();
/* *INDENT-OFF* */
REPLY_MACRO2(VL_API_MPLS_TUNNEL_ADD_DEL_REPLY,
({
rmp->sw_if_index = ntohl(tunnel_sw_if_index);
}));
/* *INDENT-ON* */
}
static void
vl_api_mpls_tunnel_details_t_handler (vl_api_mpls_tunnel_details_t * mp)
{
clib_warning ("BUG");
}
typedef struct mpls_tunnel_send_walk_ctx_t_
{
unix_shared_memory_queue_t *q;
u32 index;
u32 context;
} mpls_tunnel_send_walk_ctx_t;
static void
send_mpls_tunnel_entry (u32 mti, void *arg)
{
mpls_tunnel_send_walk_ctx_t *ctx;
vl_api_mpls_tunnel_details_t *mp;
const mpls_tunnel_t *mt;
u32 nlabels;
ctx = arg;
if (~0 != ctx->index && mti != ctx->index)
return;
mt = mpls_tunnel_get (mti);
nlabels = vec_len (mt->mt_label_stack);
mp = vl_msg_api_alloc (sizeof (*mp) + nlabels * sizeof (u32));
memset (mp, 0, sizeof (*mp));
mp->_vl_msg_id = ntohs (VL_API_MPLS_TUNNEL_DETAILS);
mp->context = ctx->context;
mp->tunnel_index = ntohl (mti);
memcpy (mp->mt_next_hop_out_labels,
mt->mt_label_stack, nlabels * sizeof (u32));
// FIXME
vl_msg_api_send_shmem (ctx->q, (u8 *) & mp);
}
static void
vl_api_mpls_tunnel_dump_t_handler (vl_api_mpls_tunnel_dump_t * mp)
{
unix_shared_memory_queue_t *q;
q = vl_api_client_index_to_input_queue (mp->client_index);
if (q == 0)
return;
mpls_tunnel_send_walk_ctx_t ctx = {
.q = q,
.index = ntohl (mp->tunnel_index),
.context = mp->context,
};
mpls_tunnel_walk (send_mpls_tunnel_entry, &ctx);
}
static void
vl_api_mpls_fib_details_t_handler (vl_api_mpls_fib_details_t * mp)
{
clib_warning ("BUG");
}
static void
vl_api_mpls_fib_details_t_endian (vl_api_mpls_fib_details_t * mp)
{
clib_warning ("BUG");
}
static void
vl_api_mpls_fib_details_t_print (vl_api_mpls_fib_details_t * mp)
{
clib_warning ("BUG");
}
static void
send_mpls_fib_details (vpe_api_main_t * am,
unix_shared_memory_queue_t * q,
u32 table_id, u32 label, u32 eos,
fib_route_path_encode_t * api_rpaths, u32 context)
{
vl_api_mpls_fib_details_t *mp;
fib_route_path_encode_t *api_rpath;
vl_api_fib_path2_t *fp;
int path_count;
path_count = vec_len (api_rpaths);
mp = vl_msg_api_alloc (sizeof (*mp) + path_count * sizeof (*fp));
if (!mp)
return;
memset (mp, 0, sizeof (*mp));
mp->_vl_msg_id = ntohs (VL_API_MPLS_FIB_DETAILS);
mp->context = context;
mp->table_id = htonl (table_id);
mp->eos_bit = eos;
mp->label = htonl (label);
mp->count = htonl (path_count);
fp = mp->path;
vec_foreach (api_rpath, api_rpaths)
{
memset (fp, 0, sizeof (*fp));
fp->weight = htonl (api_rpath->rpath.frp_weight);
fp->sw_if_index = htonl (api_rpath->rpath.frp_sw_if_index);
copy_fib_next_hop (api_rpath, fp);
fp++;
}
vl_msg_api_send_shmem (q, (u8 *) & mp);
}
static void
vl_api_mpls_fib_dump_t_handler (vl_api_mpls_fib_dump_t * mp)
{
vpe_api_main_t *am = &vpe_api_main;
unix_shared_memory_queue_t *q;
mpls_main_t *mm = &mpls_main;
fib_table_t *fib_table;
fib_node_index_t lfei, *lfeip, *lfeis = NULL;
mpls_label_t key;
fib_prefix_t pfx;
u32 fib_index;
fib_route_path_encode_t *api_rpaths;
q = vl_api_client_index_to_input_queue (mp->client_index);
if (q == 0)
return;
/* *INDENT-OFF* */
pool_foreach (fib_table, mm->fibs,
({
hash_foreach(key, lfei, fib_table->mpls.mf_entries,
({
vec_add1(lfeis, lfei);
}));
}));
/* *INDENT-ON* */
vec_sort_with_function (lfeis, fib_entry_cmp_for_sort);
vec_foreach (lfeip, lfeis)
{
fib_entry_get_prefix (*lfeip, &pfx);
fib_index = fib_entry_get_fib_index (*lfeip);
fib_table = fib_table_get (fib_index, pfx.fp_proto);
api_rpaths = NULL;
fib_entry_encode (*lfeip, &api_rpaths);
send_mpls_fib_details (am, q,
fib_table->ft_table_id,
pfx.fp_label, pfx.fp_eos, api_rpaths, mp->context);
vec_free (api_rpaths);
}
vec_free (lfeis);
}
/*
* mpls_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_mpls;
#undef _
}
static clib_error_t *
mpls_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 _
/*
* Trace space for 8 MPLS encap labels
*/
am->api_trace_cfg[VL_API_MPLS_TUNNEL_ADD_DEL].size += 8 * sizeof (u32);
/*
* Set up the (msg_name, crc, message-id) table
*/
setup_message_id_table (am);
return 0;
}
VLIB_API_INIT_FUNCTION (mpls_api_hookup);
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
