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-rw-r--r--src/vnet/fib/fib_api.c268
1 files changed, 268 insertions, 0 deletions
diff --git a/src/vnet/fib/fib_api.c b/src/vnet/fib/fib_api.c
new file mode 100644
index 00000000000..a2f7e79b03c
--- /dev/null
+++ b/src/vnet/fib/fib_api.c
@@ -0,0 +1,268 @@
+/*
+ * 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/fib/fib_api.h>
+#include <vnet/fib/fib_table.h>
+#include <vnet/bier/bier_disp_table.h>
+#include <vnet/dpo/ip_null_dpo.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>
+
+int
+fib_path_api_parse (const vl_api_fib_path_t *in,
+ fib_route_path_t *out)
+{
+ fib_route_path_flags_t path_flags;
+ mpls_label_t next_hop_via_label;
+ int rv = 0, n_labels;
+ u8 ii;
+
+ path_flags = FIB_ROUTE_PATH_FLAG_NONE;
+ next_hop_via_label = ntohl (in->via_label);
+ memset(out, 0, sizeof(*out));
+ out->frp_sw_if_index = ~0;
+
+ out->frp_proto = in->afi;
+ // .frp_addr = (NULL == next_hop ? zero_addr : *next_hop),
+ out->frp_sw_if_index = ntohl(in->sw_if_index);
+ out->frp_fib_index = ntohl(in->table_id);
+ out->frp_weight = in->weight;
+ out->frp_preference = in->preference;
+
+ /*
+ * the special INVALID label meams we are not recursing via a
+ * label. Exp-null value is never a valid via-label so that
+ * also means it's not a via-label and means clients that set
+ * it to 0 by default get the expected behaviour
+ */
+ if ((MPLS_LABEL_INVALID != next_hop_via_label) &&
+ (0 != next_hop_via_label))
+ {
+ out->frp_proto = DPO_PROTO_MPLS;
+ out->frp_local_label = next_hop_via_label;
+ out->frp_eos = MPLS_NON_EOS;
+ }
+
+ n_labels = in->n_labels;
+ if (n_labels == 0)
+ ;
+ else
+ {
+ vec_validate (out->frp_label_stack, n_labels - 1);
+ for (ii = 0; ii < n_labels; ii++)
+ {
+ out->frp_label_stack[ii].fml_value =
+ ntohl(in->label_stack[ii].label);
+ out->frp_label_stack[ii].fml_ttl =
+ in->label_stack[ii].ttl;
+ out->frp_label_stack[ii].fml_exp =
+ in->label_stack[ii].exp;
+ out->frp_label_stack[ii].fml_mode =
+ (in->label_stack[ii].is_uniform ?
+ FIB_MPLS_LSP_MODE_UNIFORM :
+ FIB_MPLS_LSP_MODE_PIPE);
+ }
+ }
+
+ if (in->is_dvr)
+ path_flags |= FIB_ROUTE_PATH_DVR;
+ if (in->is_resolve_host)
+ path_flags |= FIB_ROUTE_PATH_RESOLVE_VIA_HOST;
+ if (in->is_resolve_attached)
+ path_flags |= FIB_ROUTE_PATH_RESOLVE_VIA_ATTACHED;
+ /* if (in->is_interface_rx) */
+ /* path_flags |= FIB_ROUTE_PATH_INTF_RX; */
+ /* if (in->is_rpf_id) */
+ /* path_flags |= FIB_ROUTE_PATH_RPF_ID; */
+ if (in->is_source_lookup)
+ path_flags |= FIB_ROUTE_PATH_SOURCE_LOOKUP;
+
+ if (in->is_udp_encap)
+ {
+ path_flags |= FIB_ROUTE_PATH_UDP_ENCAP;
+ out->frp_udp_encap_id = ntohl(in->next_hop_id);
+ }
+ else
+ {
+ if (DPO_PROTO_IP4 == in->afi)
+ {
+ clib_memcpy (&out->frp_addr.ip4,
+ in->next_hop,
+ sizeof (out->frp_addr.ip4));
+ }
+ else if (DPO_PROTO_IP6 == in->afi)
+ {
+ clib_memcpy (&out->frp_addr.ip6,
+ in->next_hop,
+ sizeof (out->frp_addr.ip6));
+ }
+
+ if (ip46_address_is_zero(&out->frp_addr))
+ {
+ if (DPO_PROTO_BIER == in->afi)
+ {
+ index_t bdti;
+
+ bdti = bier_disp_table_find(ntohl(in->table_id));
+
+ if (INDEX_INVALID != bdti)
+ {
+ out->frp_fib_index = bdti;
+ out->frp_proto = DPO_PROTO_BIER;
+ }
+ else
+ {
+ rv = VNET_API_ERROR_NO_SUCH_FIB;
+ }
+ }
+ else if (out->frp_sw_if_index == ~0 &&
+ out->frp_fib_index != ~0)
+ {
+ path_flags |= FIB_ROUTE_PATH_DEAG;
+ }
+ }
+ }
+
+ out->frp_flags = path_flags;
+
+ return (rv);
+}
+
+void
+fib_prefix_to_api (const fib_prefix_t *pfx,
+ u8 address[16],
+ u8 *length,
+ u8 *is_ip6)
+{
+ *length = pfx->fp_len;
+ *is_ip6 = (FIB_PROTOCOL_IP6 == pfx->fp_proto ? 1 : 0);
+
+ if (FIB_PROTOCOL_IP6 == pfx->fp_proto)
+ {
+ memcpy (address, &pfx->fp_addr.ip6, sizeof (pfx->fp_addr.ip6));
+ }
+ else
+ {
+ memcpy (address, &pfx->fp_addr.ip4, sizeof (pfx->fp_addr.ip4));
+ }
+}
+
+static void
+fib_api_path_copy_next_hop (const fib_route_path_encode_t * api_rpath, void *fp_arg)
+{
+ int is_ip4;
+ vl_api_fib_path_t *fp = (vl_api_fib_path_t *) fp_arg;
+
+ if (api_rpath->rpath.frp_proto == DPO_PROTO_IP4)
+ fp->afi = IP46_TYPE_IP4;
+ else if (api_rpath->rpath.frp_proto == DPO_PROTO_IP6)
+ fp->afi = IP46_TYPE_IP6;
+ else
+ {
+ is_ip4 = ip46_address_is_ip4 (&api_rpath->rpath.frp_addr);
+ if (is_ip4)
+ fp->afi = IP46_TYPE_IP4;
+ else
+ fp->afi = IP46_TYPE_IP6;
+ }
+ if (fp->afi == IP46_TYPE_IP4)
+ memcpy (fp->next_hop, &api_rpath->rpath.frp_addr.ip4,
+ sizeof (api_rpath->rpath.frp_addr.ip4));
+ else
+ memcpy (fp->next_hop, &api_rpath->rpath.frp_addr.ip6,
+ sizeof (api_rpath->rpath.frp_addr.ip6));
+}
+
+void
+fib_api_path_encode (const fib_route_path_encode_t * api_rpath,
+ vl_api_fib_path_t *out)
+{
+ memset (out, 0, sizeof (*out));
+ switch (api_rpath->dpo.dpoi_type)
+ {
+ case DPO_RECEIVE:
+ out->is_local = true;
+ break;
+ case DPO_DROP:
+ out->is_drop = true;
+ break;
+ case DPO_IP_NULL:
+ switch (api_rpath->dpo.dpoi_index)
+ {
+ case IP_NULL_ACTION_NONE:
+ out->is_drop = true;
+ break;
+ case IP_NULL_ACTION_SEND_ICMP_UNREACH:
+ out->is_unreach = true;
+ break;
+ case IP_NULL_ACTION_SEND_ICMP_PROHIBIT:
+ out->is_prohibit = true;
+ break;
+ default:
+ break;
+ }
+ break;
+ default:
+ break;
+ }
+ out->weight = api_rpath->rpath.frp_weight;
+ out->preference = api_rpath->rpath.frp_preference;
+ out->sw_if_index = htonl (api_rpath->rpath.frp_sw_if_index);
+ out->afi = api_rpath->rpath.frp_proto;
+ fib_api_path_copy_next_hop (api_rpath, out);
+
+ if (~0 == api_rpath->rpath.frp_sw_if_index &&
+ !ip46_address_is_zero(&api_rpath->rpath.frp_addr))
+ {
+ if ((DPO_PROTO_IP6 == api_rpath->rpath.frp_proto) ||
+ (DPO_PROTO_IP6 == api_rpath->rpath.frp_proto))
+ {
+ fib_table_t *fib;
+
+ fib = fib_table_get (api_rpath->rpath.frp_fib_index,
+ dpo_proto_to_fib(api_rpath->rpath.frp_proto));
+
+ out->table_id = htonl (fib->ft_table_id);
+ }
+ }
+
+ if (api_rpath->rpath.frp_flags & FIB_ROUTE_PATH_DVR)
+ {
+ out->is_dvr = 1;
+ }
+ if (api_rpath->rpath.frp_flags & FIB_ROUTE_PATH_UDP_ENCAP)
+ {
+ out->is_udp_encap = 1;
+ out->next_hop_id = api_rpath->rpath.frp_udp_encap_id;
+ }
+}