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/*
* 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);
clib_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)
{
clib_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 (ip_null_dpo_get_action(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_fib_index)
{
if ((DPO_PROTO_IP6 == api_rpath->rpath.frp_proto) ||
(DPO_PROTO_IP4 == 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;
}
}
fib_protocol_t
fib_proto_from_api_address_family (int af)
{
switch (clib_net_to_host_u32 (af))
{
case ADDRESS_IP4:
return (FIB_PROTOCOL_IP4);
case ADDRESS_IP6:
return (FIB_PROTOCOL_IP6);
}
ASSERT(0);
return (FIB_PROTOCOL_IP4);
}
int
fib_proto_to_api_address_family (fib_protocol_t fproto)
{
switch (fproto)
{
case FIB_PROTOCOL_IP4:
return (clib_net_to_host_u32 (ADDRESS_IP4));
case FIB_PROTOCOL_IP6:
return (clib_net_to_host_u32 (ADDRESS_IP6));
default:
break;
}
ASSERT(0);
return (clib_net_to_host_u32 (ADDRESS_IP4));
}
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