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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/ip/ip.h>
#include <vnet/fib/fib_types.h>
#include <vnet/fib/fib_internal.h>
#include <vnet/mpls/mpls.h>
/*
* arrays of protocol and link names
*/
static const char* fib_protocol_names[] = FIB_PROTOCOLS;
static const char* vnet_link_names[] = VNET_LINKS;
static const char* fib_forw_chain_names[] = FIB_FORW_CHAINS;
u8 *
format_fib_protocol (u8 * s, va_list ap)
{
fib_protocol_t proto = va_arg(ap, int); // fib_protocol_t promotion
return (format (s, "%s", fib_protocol_names[proto]));
}
u8 *
format_vnet_link (u8 * s, va_list ap)
{
vnet_link_t link = va_arg(ap, int); // vnet_link_t promotion
return (format (s, "%s", vnet_link_names[link]));
}
u8 *
format_fib_forw_chain_type (u8 * s, va_list * args)
{
fib_forward_chain_type_t fct = va_arg(*args, int);
return (format (s, "%s", fib_forw_chain_names[fct]));
}
void
fib_prefix_from_ip46_addr (const ip46_address_t *addr,
fib_prefix_t *pfx)
{
ASSERT(!ip46_address_is_zero(addr));
pfx->fp_proto = ((ip46_address_is_ip4(addr) ?
FIB_PROTOCOL_IP4 :
FIB_PROTOCOL_IP6));
pfx->fp_len = ((ip46_address_is_ip4(addr) ?
32 : 128));
pfx->fp_addr = *addr;
}
int
fib_prefix_cmp (const fib_prefix_t *p1,
const fib_prefix_t *p2)
{
int res;
res = (p1->fp_proto - p2->fp_proto);
if (0 == res)
{
switch (p1->fp_proto)
{
case FIB_PROTOCOL_IP4:
case FIB_PROTOCOL_IP6:
res = (p1->fp_len - p2->fp_len);
if (0 == res)
{
res = ip46_address_cmp(&p1->fp_addr, &p2->fp_addr);
}
break;
case FIB_PROTOCOL_MPLS:
res = (p1->fp_label - p2->fp_label);
if (0 == res)
{
res = (p1->fp_eos - p2->fp_eos);
}
break;
}
}
return (res);
}
int
fib_prefix_is_cover (const fib_prefix_t *p1,
const fib_prefix_t *p2)
{
switch (p1->fp_proto)
{
case FIB_PROTOCOL_IP4:
return (ip4_destination_matches_route(&ip4_main,
&p1->fp_addr.ip4,
&p2->fp_addr.ip4,
p1->fp_len));
case FIB_PROTOCOL_IP6:
return (ip6_destination_matches_route(&ip6_main,
&p1->fp_addr.ip6,
&p2->fp_addr.ip6,
p1->fp_len));
case FIB_PROTOCOL_MPLS:
break;
}
return (0);
}
int
fib_prefix_is_host (const fib_prefix_t *prefix)
{
switch (prefix->fp_proto)
{
case FIB_PROTOCOL_IP4:
return (prefix->fp_len == 32);
case FIB_PROTOCOL_IP6:
return (prefix->fp_len == 128);
case FIB_PROTOCOL_MPLS:
return (!0);
}
return (0);
}
u8 *
format_fib_prefix (u8 * s, va_list * args)
{
fib_prefix_t *fp = va_arg (*args, fib_prefix_t *);
/*
* protocol specific so it prints ::/0 correctly.
*/
switch (fp->fp_proto)
{
case FIB_PROTOCOL_IP6:
{
ip6_address_t p6 = fp->fp_addr.ip6;
ip6_address_mask(&p6, &(ip6_main.fib_masks[fp->fp_len]));
s = format (s, "%U", format_ip6_address, &p6);
break;
}
case FIB_PROTOCOL_IP4:
{
ip4_address_t p4 = fp->fp_addr.ip4;
p4.as_u32 &= ip4_main.fib_masks[fp->fp_len];
s = format (s, "%U", format_ip4_address, &p4);
break;
}
case FIB_PROTOCOL_MPLS:
s = format (s, "%U:%U",
format_mpls_unicast_label, fp->fp_label,
format_mpls_eos_bit, fp->fp_eos);
break;
}
s = format (s, "/%d", fp->fp_len);
return (s);
}
int
fib_route_path_cmp (const fib_route_path_t *rpath1,
const fib_route_path_t *rpath2)
{
int res;
res = ip46_address_cmp(&rpath1->frp_addr,
&rpath2->frp_addr);
if (0 != res) return (res);
res = vnet_sw_interface_compare(vnet_get_main(),
rpath1->frp_sw_if_index,
rpath2->frp_sw_if_index);
if (0 != res) return (res);
if (ip46_address_is_zero(&rpath1->frp_addr))
{
res = rpath1->frp_fib_index - rpath2->frp_fib_index;
}
return (res);
}
dpo_proto_t
fib_proto_to_dpo (fib_protocol_t fib_proto)
{
switch (fib_proto)
{
case FIB_PROTOCOL_IP6:
return (DPO_PROTO_IP6);
case FIB_PROTOCOL_IP4:
return (DPO_PROTO_IP4);
case FIB_PROTOCOL_MPLS:
return (DPO_PROTO_MPLS);
}
ASSERT(0);
return (0);
}
dpo_proto_t
vnet_link_to_dpo_proto (vnet_link_t linkt)
{
switch (linkt)
{
case VNET_LINK_IP6:
return (DPO_PROTO_IP6);
case VNET_LINK_IP4:
return (DPO_PROTO_IP4);
case VNET_LINK_MPLS:
return (DPO_PROTO_MPLS);
case VNET_LINK_ETHERNET:
return (DPO_PROTO_ETHERNET);
case VNET_LINK_ARP:
break;
}
ASSERT(0);
return (0);
}
fib_protocol_t
dpo_proto_to_fib (dpo_proto_t dpo_proto)
{
switch (dpo_proto)
{
case DPO_PROTO_IP6:
return (FIB_PROTOCOL_IP6);
case DPO_PROTO_IP4:
return (FIB_PROTOCOL_IP4);
case DPO_PROTO_MPLS:
return (FIB_PROTOCOL_MPLS);
default:
break;
}
ASSERT(0);
return (0);
}
vnet_link_t
fib_proto_to_link (fib_protocol_t proto)
{
switch (proto)
{
case FIB_PROTOCOL_IP4:
return (VNET_LINK_IP4);
case FIB_PROTOCOL_IP6:
return (VNET_LINK_IP6);
case FIB_PROTOCOL_MPLS:
return (VNET_LINK_MPLS);
}
ASSERT(0);
return (0);
}
fib_forward_chain_type_t
fib_forw_chain_type_from_dpo_proto (dpo_proto_t proto)
{
switch (proto)
{
case DPO_PROTO_IP4:
return (FIB_FORW_CHAIN_TYPE_UNICAST_IP4);
case DPO_PROTO_IP6:
return (FIB_FORW_CHAIN_TYPE_UNICAST_IP6);
case DPO_PROTO_MPLS:
return (FIB_FORW_CHAIN_TYPE_MPLS_NON_EOS);
case DPO_PROTO_ETHERNET:
return (FIB_FORW_CHAIN_TYPE_ETHERNET);
}
ASSERT(0);
return (FIB_FORW_CHAIN_TYPE_UNICAST_IP4);
}
vnet_link_t
fib_forw_chain_type_to_link_type (fib_forward_chain_type_t fct)
{
switch (fct)
{
case FIB_FORW_CHAIN_TYPE_UNICAST_IP4:
return (VNET_LINK_IP4);
case FIB_FORW_CHAIN_TYPE_UNICAST_IP6:
return (VNET_LINK_IP6);
case FIB_FORW_CHAIN_TYPE_ETHERNET:
return (VNET_LINK_ETHERNET);
case FIB_FORW_CHAIN_TYPE_MPLS_EOS:
/*
* insufficient information to to convert
*/
ASSERT(0);
break;
case FIB_FORW_CHAIN_TYPE_MPLS_NON_EOS:
return (VNET_LINK_MPLS);
}
return (VNET_LINK_IP4);
}
dpo_proto_t
fib_forw_chain_type_to_dpo_proto (fib_forward_chain_type_t fct)
{
switch (fct)
{
case FIB_FORW_CHAIN_TYPE_UNICAST_IP4:
return (DPO_PROTO_IP4);
case FIB_FORW_CHAIN_TYPE_UNICAST_IP6:
return (DPO_PROTO_IP6);
case FIB_FORW_CHAIN_TYPE_ETHERNET:
return (DPO_PROTO_ETHERNET);
case FIB_FORW_CHAIN_TYPE_MPLS_EOS:
/*
* insufficient information to to convert
*/
ASSERT(0);
break;
case FIB_FORW_CHAIN_TYPE_MPLS_NON_EOS:
return (DPO_PROTO_MPLS);
}
return (VNET_LINK_IP4);
}
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