diff options
Diffstat (limited to 'src/vnet/fib/fib_api.c')
| -rw-r--r-- | src/vnet/fib/fib_api.c | 268 |
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; + } +} |