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-rw-r--r--src/vnet/mpls/mpls_api.c497
1 files changed, 497 insertions, 0 deletions
diff --git a/src/vnet/mpls/mpls_api.c b/src/vnet/mpls/mpls_api.c
new file mode 100644
index 00000000000..ebbeba698a1
--- /dev/null
+++ b/src/vnet/mpls/mpls_api.c
@@ -0,0 +1,497 @@
+/*
+ *------------------------------------------------------------------
+ * 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:
+ */