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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 <vppinfra/types.h>
#include <vnet/bier/bier_types.h>
#include <vnet/bier/bier_hdr_inlines.h>
/*
* enum to string conversions
*/
const static char* const bier_hdr_len_id_names[] = BIER_HDR_LEN_IDS;
const static char* const bier_hdr_proto_names[] = BIER_HDR_PROTO_ID_NAMES;
const static u16 bier_hdr_len_num_buckets[] = {
[BIER_HDR_LEN_INVALID] = 0,
[BIER_HDR_LEN_64] = 8,
[BIER_HDR_LEN_128] = 16,
[BIER_HDR_LEN_256] = 32,
[BIER_HDR_LEN_512] = 64,
[BIER_HDR_LEN_1024] = 128,
[BIER_HDR_LEN_2048] = 256,
[BIER_HDR_LEN_4096] = 512,
};
const static u16 bier_hdr_len_num_bits[] = {
[BIER_HDR_LEN_INVALID] = 0,
[BIER_HDR_LEN_64] = 64,
[BIER_HDR_LEN_128] = 128,
[BIER_HDR_LEN_256] = 256,
[BIER_HDR_LEN_512] = 512,
[BIER_HDR_LEN_1024] = 1024,
[BIER_HDR_LEN_2048] = 2048,
[BIER_HDR_LEN_4096] = 4096,
};
const static u16 bier_hdr_len_prefix_len[] = {
[BIER_HDR_LEN_INVALID] = 0,
[BIER_HDR_LEN_64] = 7,
[BIER_HDR_LEN_128] = 8,
[BIER_HDR_LEN_256] = 9,
[BIER_HDR_LEN_512] = 10,
[BIER_HDR_LEN_1024] = 11,
[BIER_HDR_LEN_2048] = 12,
[BIER_HDR_LEN_4096] = 13,
};
u32
bier_hdr_len_id_to_num_buckets (bier_hdr_len_id_t id)
{
return (bier_hdr_len_num_buckets[id]);
}
u32
bier_hdr_len_id_to_num_bytes (bier_hdr_len_id_t id)
{
return (bier_hdr_len_id_to_num_buckets(id));
}
u32
bier_hdr_len_id_to_max_bucket (bier_hdr_len_id_t id)
{
return (bier_hdr_len_id_to_num_buckets(id) - 1);
}
u32
bier_hdr_len_id_to_num_bits (bier_hdr_len_id_t id)
{
return (bier_hdr_len_num_bits[id]);
}
u32
bier_hdr_len_id_to_max_bit (bier_hdr_len_id_t id)
{
return (bier_hdr_len_id_to_num_bits(id));
}
u32
bier_hdr_len_id_to_prefix_len (bier_hdr_len_id_t id)
{
return (bier_hdr_len_prefix_len[id]);
}
u8 *
format_bier_hdr_len_id (u8 *s, va_list *ap)
{
bier_hdr_len_id_t hli = va_arg(*ap, int); // int promotion of bier_hdr_len_id_t
return (format(s, "%s", bier_hdr_len_id_names[hli]));
}
u8 *
format_bier_hdr_proto (u8 *s, va_list *ap)
{
bier_hdr_proto_id_t pi = va_arg(*ap, int);
return (format(s, "%s", bier_hdr_proto_names[pi]));
}
int
bier_table_id_cmp (const bier_table_id_t *btid1,
const bier_table_id_t *btid2)
{
int res;
res = (btid1->bti_set - btid2->bti_set);
if (0 == res)
{
res = (btid1->bti_sub_domain - btid2->bti_sub_domain);
}
if (0 == res)
{
res = (btid1->bti_ecmp - btid2->bti_ecmp);
}
if (0 == res)
{
res = (btid1->bti_hdr_len - btid2->bti_hdr_len);
}
if (0 == res)
{
res = (btid1->bti_type - btid2->bti_type);
}
return (res);
}
dpo_proto_t
bier_hdr_proto_to_dpo (bier_hdr_proto_id_t bproto)
{
switch (bproto)
{
case BIER_HDR_PROTO_INVALID:
case BIER_HDR_PROTO_CTRL:
case BIER_HDR_PROTO_OAM:
ASSERT(0);
break;
case BIER_HDR_PROTO_MPLS_DOWN_STREAM:
case BIER_HDR_PROTO_MPLS_UP_STREAM:
return (DPO_PROTO_MPLS);
case BIER_HDR_PROTO_ETHERNET:
case BIER_HDR_PROTO_VXLAN:
return (DPO_PROTO_ETHERNET);
case BIER_HDR_PROTO_IPV4:
return (DPO_PROTO_IP4);
case BIER_HDR_PROTO_IPV6:
return (DPO_PROTO_IP4);
}
return (DPO_PROTO_NUM);
}
bier_bift_id_t
bier_bift_id_encode (bier_table_set_id_t set,
bier_table_sub_domain_id_t sd,
bier_hdr_len_id_t bsl)
{
bier_bift_id_t id;
id = bsl;
id = id << 8;
id |= sd;
id = id << 8;
id |= set;
return (id);
}
void
bier_bift_id_decode (bier_bift_id_t id,
bier_table_set_id_t *set,
bier_table_sub_domain_id_t *sd,
bier_hdr_len_id_t *bsl)
{
*set = id & 0xff;
id = id >> 8;
*sd = id & 0xff;
id = id >> 8;
*bsl = id;
}
u8 *
format_bier_table_id (u8 *s, va_list *ap)
{
bier_table_id_t *btid = va_arg(*ap, bier_table_id_t *);
return (format(s, "sub-domain:%d set:%d ecmp:%d bsl:%U",
btid->bti_sub_domain,
btid->bti_set,
btid->bti_ecmp,
format_bier_hdr_len_id, btid->bti_hdr_len));
}
u8 *
format_bier_hdr (u8 *s, va_list *ap)
{
bier_hdr_t *bh = va_arg(*ap, bier_hdr_t *);
bier_hdr_t copy = *bh;
bier_hdr_ntoh(©);
return (format(s, "nibble:%d version:%d hdr-len:%U entropy:%d proto:%U src:%d",
bier_hdr_get_1st_nibble(©),
bier_hdr_get_version(©),
format_bier_hdr_len_id, bier_hdr_get_len_id(©),
bier_hdr_get_entropy(©),
format_bier_hdr_proto, bier_hdr_get_proto_id(©),
bier_hdr_get_src_id(©)));
}
u8*
format_bier_bift_id(u8 *s, va_list *ap)
{
bier_bift_id_t id = va_arg(*ap, bier_bift_id_t);
bier_table_sub_domain_id_t sd;
bier_table_set_id_t set;
bier_hdr_len_id_t bsl;
bier_bift_id_decode(id, &set, &sd, &bsl);
return (format(s, "0x%x -> set:%d sd:%d hdr-len:%U",
id, set, sd, format_bier_hdr_len_id, bsl));
}
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