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/*
* SRv6 definitions
* Copyright (C) 2020 Hiroki Shirokura, LINE Corporation
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; see the file COPYING; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "zebra.h"
#include "srv6.h"
#include "log.h"
DEFINE_QOBJ_TYPE(srv6_locator);
DEFINE_MTYPE_STATIC(LIB, SRV6_LOCATOR, "SRV6 locator");
DEFINE_MTYPE_STATIC(LIB, SRV6_LOCATOR_CHUNK, "SRV6 locator chunk");
const char *seg6local_action2str(uint32_t action)
{
switch (action) {
case ZEBRA_SEG6_LOCAL_ACTION_END:
return "End";
case ZEBRA_SEG6_LOCAL_ACTION_END_X:
return "End.X";
case ZEBRA_SEG6_LOCAL_ACTION_END_T:
return "End.T";
case ZEBRA_SEG6_LOCAL_ACTION_END_DX2:
return "End.DX2";
case ZEBRA_SEG6_LOCAL_ACTION_END_DX6:
return "End.DX6";
case ZEBRA_SEG6_LOCAL_ACTION_END_DX4:
return "End.DX4";
case ZEBRA_SEG6_LOCAL_ACTION_END_DT6:
return "End.DT6";
case ZEBRA_SEG6_LOCAL_ACTION_END_DT4:
return "End.DT4";
case ZEBRA_SEG6_LOCAL_ACTION_END_B6:
return "End.B6";
case ZEBRA_SEG6_LOCAL_ACTION_END_B6_ENCAP:
return "End.B6.Encap";
case ZEBRA_SEG6_LOCAL_ACTION_END_BM:
return "End.BM";
case ZEBRA_SEG6_LOCAL_ACTION_END_S:
return "End.S";
case ZEBRA_SEG6_LOCAL_ACTION_END_AS:
return "End.AS";
case ZEBRA_SEG6_LOCAL_ACTION_END_AM:
return "End.AM";
case ZEBRA_SEG6_LOCAL_ACTION_UNSPEC:
return "unspec";
default:
return "unknown";
}
}
int snprintf_seg6_segs(char *str,
size_t size, const struct seg6_segs *segs)
{
str[0] = '\0';
for (size_t i = 0; i < segs->num_segs; i++) {
char addr[INET6_ADDRSTRLEN];
bool not_last = (i + 1) < segs->num_segs;
inet_ntop(AF_INET6, &segs->segs[i], addr, sizeof(addr));
strlcat(str, addr, size);
strlcat(str, not_last ? "," : "", size);
}
return strlen(str);
}
const char *seg6local_context2str(char *str, size_t size,
const struct seg6local_context *ctx,
uint32_t action)
{
char b0[128];
switch (action) {
case ZEBRA_SEG6_LOCAL_ACTION_END:
snprintf(str, size, "USP");
return str;
case ZEBRA_SEG6_LOCAL_ACTION_END_X:
case ZEBRA_SEG6_LOCAL_ACTION_END_DX6:
inet_ntop(AF_INET6, &ctx->nh6, b0, 128);
snprintf(str, size, "nh6 %s", b0);
return str;
case ZEBRA_SEG6_LOCAL_ACTION_END_DX4:
inet_ntop(AF_INET, &ctx->nh4, b0, 128);
snprintf(str, size, "nh4 %s", b0);
return str;
case ZEBRA_SEG6_LOCAL_ACTION_END_T:
case ZEBRA_SEG6_LOCAL_ACTION_END_DT6:
case ZEBRA_SEG6_LOCAL_ACTION_END_DT4:
snprintf(str, size, "table %u", ctx->table);
return str;
case ZEBRA_SEG6_LOCAL_ACTION_END_DX2:
case ZEBRA_SEG6_LOCAL_ACTION_END_B6:
case ZEBRA_SEG6_LOCAL_ACTION_END_B6_ENCAP:
case ZEBRA_SEG6_LOCAL_ACTION_END_BM:
case ZEBRA_SEG6_LOCAL_ACTION_END_S:
case ZEBRA_SEG6_LOCAL_ACTION_END_AS:
case ZEBRA_SEG6_LOCAL_ACTION_END_AM:
case ZEBRA_SEG6_LOCAL_ACTION_UNSPEC:
default:
snprintf(str, size, "unknown(%s)", __func__);
return str;
}
}
struct srv6_locator *srv6_locator_alloc(const char *name)
{
struct srv6_locator *locator = NULL;
locator = XCALLOC(MTYPE_SRV6_LOCATOR, sizeof(struct srv6_locator));
strlcpy(locator->name, name, sizeof(locator->name));
locator->chunks = list_new();
QOBJ_REG(locator, srv6_locator);
return locator;
}
struct srv6_locator_chunk *srv6_locator_chunk_alloc(void)
{
struct srv6_locator_chunk *chunk = NULL;
chunk = XCALLOC(MTYPE_SRV6_LOCATOR_CHUNK,
sizeof(struct srv6_locator_chunk));
return chunk;
}
void srv6_locator_free(struct srv6_locator *locator)
{
XFREE(MTYPE_SRV6_LOCATOR, locator);
}
void srv6_locator_chunk_free(struct srv6_locator_chunk *chunk)
{
XFREE(MTYPE_SRV6_LOCATOR_CHUNK, chunk);
}
json_object *srv6_locator_chunk_json(const struct srv6_locator_chunk *chunk)
{
char str[256];
json_object *jo_root = NULL;
jo_root = json_object_new_object();
prefix2str(&chunk->prefix, str, sizeof(str));
json_object_string_add(jo_root, "prefix", str);
json_object_string_add(jo_root, "proto",
zebra_route_string(chunk->proto));
return jo_root;
}
json_object *srv6_locator_json(const struct srv6_locator *loc)
{
char str[256];
struct listnode *node;
struct srv6_locator_chunk *chunk;
json_object *jo_root = NULL;
json_object *jo_chunk = NULL;
json_object *jo_chunks = NULL;
jo_root = json_object_new_object();
/* set name */
json_object_string_add(jo_root, "name", loc->name);
/* set prefix */
prefix2str(&loc->prefix, str, sizeof(str));
json_object_string_add(jo_root, "prefix", str);
/* set function_bits_length */
json_object_int_add(jo_root, "function_bits_length",
loc->function_bits_length);
/* set status_up */
json_object_boolean_add(jo_root, "status_up",
loc->status_up);
/* set chunks */
jo_chunks = json_object_new_array();
json_object_object_add(jo_root, "chunks", jo_chunks);
for (ALL_LIST_ELEMENTS_RO((struct list *)loc->chunks, node, chunk)) {
jo_chunk = srv6_locator_chunk_json(chunk);
json_object_array_add(jo_chunks, jo_chunk);
}
return jo_root;
}
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