[mirror_frr.git] / lib / srv6.c

/*
 * 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, "functionBitsLength",
			    loc->function_bits_length);

	/* set status_up */
	json_object_boolean_add(jo_root, "statusUp",
				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;
}
Commit	Line	Data
e496b420 HS	1	/*
	2	* SRv6 definitions
	3	* Copyright (C) 2020 Hiroki Shirokura, LINE Corporation
	4	*
	5	* This program is free software; you can redistribute it and/or modify it
	6	* under the terms of the GNU General Public License as published by the Free
	7	* Software Foundation; either version 2 of the License, or (at your option)
	8	* any later version.
	9	*
	10	* This program is distributed in the hope that it will be useful, but WITHOUT
	11	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	12	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	13	* more details.
	14	*
	15	* You should have received a copy of the GNU General Public License along
	16	* with this program; see the file COPYING; if not, write to the Free Software
	17	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	18	*/
	19
7309092b DL	20	#include "zebra.h"
7309092b DL	21
e496b420 HS	22	#include "srv6.h"
	23	#include "log.h"
	24
f2867068 HS	25	DEFINE_QOBJ_TYPE(srv6_locator);
	26	DEFINE_MTYPE_STATIC(LIB, SRV6_LOCATOR, "SRV6 locator");
	27	DEFINE_MTYPE_STATIC(LIB, SRV6_LOCATOR_CHUNK, "SRV6 locator chunk");
	28
e496b420 HS	29	const char *seg6local_action2str(uint32_t action)
	30	{
	31	switch (action) {
	32	case ZEBRA_SEG6_LOCAL_ACTION_END:
	33	return "End";
	34	case ZEBRA_SEG6_LOCAL_ACTION_END_X:
	35	return "End.X";
	36	case ZEBRA_SEG6_LOCAL_ACTION_END_T:
	37	return "End.T";
	38	case ZEBRA_SEG6_LOCAL_ACTION_END_DX2:
	39	return "End.DX2";
	40	case ZEBRA_SEG6_LOCAL_ACTION_END_DX6:
	41	return "End.DX6";
	42	case ZEBRA_SEG6_LOCAL_ACTION_END_DX4:
	43	return "End.DX4";
	44	case ZEBRA_SEG6_LOCAL_ACTION_END_DT6:
	45	return "End.DT6";
	46	case ZEBRA_SEG6_LOCAL_ACTION_END_DT4:
	47	return "End.DT4";
	48	case ZEBRA_SEG6_LOCAL_ACTION_END_B6:
	49	return "End.B6";
	50	case ZEBRA_SEG6_LOCAL_ACTION_END_B6_ENCAP:
	51	return "End.B6.Encap";
	52	case ZEBRA_SEG6_LOCAL_ACTION_END_BM:
	53	return "End.BM";
	54	case ZEBRA_SEG6_LOCAL_ACTION_END_S:
	55	return "End.S";
	56	case ZEBRA_SEG6_LOCAL_ACTION_END_AS:
	57	return "End.AS";
	58	case ZEBRA_SEG6_LOCAL_ACTION_END_AM:
	59	return "End.AM";
	60	case ZEBRA_SEG6_LOCAL_ACTION_UNSPEC:
	61	return "unspec";
	62	default:
	63	return "unknown";
	64	}
	65	}
	66
	67	int snprintf_seg6_segs(char *str,
	68	size_t size, const struct seg6_segs *segs)
	69	{
	70	str[0] = '\0';
	71	for (size_t i = 0; i < segs->num_segs; i++) {
	72	char addr[INET6_ADDRSTRLEN];
	73	bool not_last = (i + 1) < segs->num_segs;
	74
	75	inet_ntop(AF_INET6, &segs->segs[i], addr, sizeof(addr));
	76	strlcat(str, addr, size);
	77	strlcat(str, not_last ? "," : "", size);
	78	}
	79	return strlen(str);
	80	}
	81
	82	const char seg6local_context2str(char str, size_t size,
7a4b49bd HS	83	const struct seg6local_context *ctx,
7a4b49bd HS	84	uint32_t action)
e496b420 HS	85	{
	86	char b0[128];
	87
	88	switch (action) {
	89
	90	case ZEBRA_SEG6_LOCAL_ACTION_END:
	91	snprintf(str, size, "USP");
	92	return str;
	93
	94	case ZEBRA_SEG6_LOCAL_ACTION_END_X:
	95	case ZEBRA_SEG6_LOCAL_ACTION_END_DX6:
	96	inet_ntop(AF_INET6, &ctx->nh6, b0, 128);
	97	snprintf(str, size, "nh6 %s", b0);
	98	return str;
	99
	100	case ZEBRA_SEG6_LOCAL_ACTION_END_DX4:
	101	inet_ntop(AF_INET, &ctx->nh4, b0, 128);
	102	snprintf(str, size, "nh4 %s", b0);
	103	return str;
	104
	105	case ZEBRA_SEG6_LOCAL_ACTION_END_T:
	106	case ZEBRA_SEG6_LOCAL_ACTION_END_DT6:
	107	case ZEBRA_SEG6_LOCAL_ACTION_END_DT4:
	108	snprintf(str, size, "table %u", ctx->table);
	109	return str;
	110
	111	case ZEBRA_SEG6_LOCAL_ACTION_END_DX2:
	112	case ZEBRA_SEG6_LOCAL_ACTION_END_B6:
	113	case ZEBRA_SEG6_LOCAL_ACTION_END_B6_ENCAP:
	114	case ZEBRA_SEG6_LOCAL_ACTION_END_BM:
	115	case ZEBRA_SEG6_LOCAL_ACTION_END_S:
	116	case ZEBRA_SEG6_LOCAL_ACTION_END_AS:
	117	case ZEBRA_SEG6_LOCAL_ACTION_END_AM:
	118	case ZEBRA_SEG6_LOCAL_ACTION_UNSPEC:
	119	default:
	120	snprintf(str, size, "unknown(%s)", __func__);
	121	return str;
	122	}
	123	}
f2867068 HS	124
	125	struct srv6_locator srv6_locator_alloc(const char name)
	126	{
	127	struct srv6_locator *locator = NULL;
	128
	129	locator = XCALLOC(MTYPE_SRV6_LOCATOR, sizeof(struct srv6_locator));
	130	strlcpy(locator->name, name, sizeof(locator->name));
	131	locator->chunks = list_new();
	132	QOBJ_REG(locator, srv6_locator);
	133	return locator;
	134	}
	135
	136	struct srv6_locator_chunk *srv6_locator_chunk_alloc(void)
	137	{
	138	struct srv6_locator_chunk *chunk = NULL;
	139
	140	chunk = XCALLOC(MTYPE_SRV6_LOCATOR_CHUNK,
	141	sizeof(struct srv6_locator_chunk));
	142	return chunk;
	143	}
	144
	145	void srv6_locator_free(struct srv6_locator *locator)
	146	{
	147	XFREE(MTYPE_SRV6_LOCATOR, locator);
	148	}
	149
	150	void srv6_locator_chunk_free(struct srv6_locator_chunk *chunk)
	151	{
	152	XFREE(MTYPE_SRV6_LOCATOR_CHUNK, chunk);
	153	}
	154
	155	json_object srv6_locator_chunk_json(const struct srv6_locator_chunk chunk)
	156	{
	157	char str[256];
	158	json_object *jo_root = NULL;
	159
	160	jo_root = json_object_new_object();
	161	prefix2str(&chunk->prefix, str, sizeof(str));
	162	json_object_string_add(jo_root, "prefix", str);
	163	json_object_string_add(jo_root, "proto",
	164	zebra_route_string(chunk->proto));
	165
	166	return jo_root;
	167	}
	168
	169	json_object srv6_locator_json(const struct srv6_locator loc)
	170	{
	171	char str[256];
	172	struct listnode *node;
	173	struct srv6_locator_chunk *chunk;
	174	json_object *jo_root = NULL;
	175	json_object *jo_chunk = NULL;
	176	json_object *jo_chunks = NULL;
	177
	178	jo_root = json_object_new_object();
	179
	180	/* set name */
	181	json_object_string_add(jo_root, "name", loc->name);
	182
	183	/* set prefix */
	184	prefix2str(&loc->prefix, str, sizeof(str));
	185	json_object_string_add(jo_root, "prefix", str);
	186
	187	/* set function_bits_length */
326591dc	188	json_object_int_add(jo_root, "functionBitsLength",
f2867068 HS	189	loc->function_bits_length);
	190
	191	/* set status_up */
326591dc	192	json_object_boolean_add(jo_root, "statusUp",
f2867068 HS	193	loc->status_up);
	194
	195	/* set chunks */
	196	jo_chunks = json_object_new_array();
	197	json_object_object_add(jo_root, "chunks", jo_chunks);
	198	for (ALL_LIST_ELEMENTS_RO((struct list *)loc->chunks, node, chunk)) {
	199	jo_chunk = srv6_locator_chunk_json(chunk);
	200	json_object_array_add(jo_chunks, jo_chunk);
	201	}
	202
	203	return jo_root;
	204	}