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-rw-r--r--lib/srv6.c306
1 files changed, 306 insertions, 0 deletions
diff --git a/lib/srv6.c b/lib/srv6.c
new file mode 100644
index 0000000..09835f3
--- /dev/null
+++ b/lib/srv6.c
@@ -0,0 +1,306 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * SRv6 definitions
+ * Copyright (C) 2020 Hiroki Shirokura, LINE Corporation
+ */
+
+#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_END_DT46:
+ return "End.DT46";
+ 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)
+{
+ 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:
+ snprintfrr(str, size, "nh6 %pI6", &ctx->nh6);
+ return str;
+
+ case ZEBRA_SEG6_LOCAL_ACTION_END_DX4:
+ snprintfrr(str, size, "nh4 %pI4", &ctx->nh4);
+ return str;
+
+ case ZEBRA_SEG6_LOCAL_ACTION_END_T:
+ case ZEBRA_SEG6_LOCAL_ACTION_END_DT6:
+ case ZEBRA_SEG6_LOCAL_ACTION_END_DT4:
+ case ZEBRA_SEG6_LOCAL_ACTION_END_DT46:
+ 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;
+ }
+}
+
+static void srv6_locator_chunk_list_free(void *data)
+{
+ struct srv6_locator_chunk *chunk = data;
+
+ srv6_locator_chunk_free(&chunk);
+}
+
+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();
+ locator->chunks->del = srv6_locator_chunk_list_free;
+
+ 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)
+{
+ if (locator) {
+ QOBJ_UNREG(locator);
+ list_delete(&locator->chunks);
+
+ 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)
+{
+ json_object *jo_root = NULL;
+
+ jo_root = json_object_new_object();
+ json_object_string_addf(jo_root, "prefix", "%pFX", &chunk->prefix);
+ json_object_string_add(jo_root, "proto",
+ zebra_route_string(chunk->proto));
+
+ return jo_root;
+}
+
+json_object *
+srv6_locator_chunk_detailed_json(const struct srv6_locator_chunk *chunk)
+{
+ json_object *jo_root = NULL;
+
+ jo_root = json_object_new_object();
+
+ /* set prefix */
+ json_object_string_addf(jo_root, "prefix", "%pFX", &chunk->prefix);
+
+ /* set block_bits_length */
+ json_object_int_add(jo_root, "blockBitsLength",
+ chunk->block_bits_length);
+
+ /* set node_bits_length */
+ json_object_int_add(jo_root, "nodeBitsLength", chunk->node_bits_length);
+
+ /* set function_bits_length */
+ json_object_int_add(jo_root, "functionBitsLength",
+ chunk->function_bits_length);
+
+ /* set argument_bits_length */
+ json_object_int_add(jo_root, "argumentBitsLength",
+ chunk->argument_bits_length);
+
+ /* set keep */
+ json_object_int_add(jo_root, "keep", chunk->keep);
+
+ /* set proto */
+ json_object_string_add(jo_root, "proto",
+ zebra_route_string(chunk->proto));
+
+ /* set instance */
+ json_object_int_add(jo_root, "instance", chunk->instance);
+
+ /* set session_id */
+ json_object_int_add(jo_root, "sessionId", chunk->session_id);
+
+ return jo_root;
+}
+
+json_object *srv6_locator_json(const struct srv6_locator *loc)
+{
+ 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 */
+ json_object_string_addf(jo_root, "prefix", "%pFX", &loc->prefix);
+
+ /* set block_bits_length */
+ json_object_int_add(jo_root, "blockBitsLength", loc->block_bits_length);
+
+ /* set node_bits_length */
+ json_object_int_add(jo_root, "nodeBitsLength", loc->node_bits_length);
+
+ /* set function_bits_length */
+ json_object_int_add(jo_root, "functionBitsLength",
+ loc->function_bits_length);
+
+ /* set argument_bits_length */
+ json_object_int_add(jo_root, "argumentBitsLength",
+ loc->argument_bits_length);
+
+ /* set true if the locator is a Micro-segment (uSID) locator */
+ if (CHECK_FLAG(loc->flags, SRV6_LOCATOR_USID))
+ json_object_string_add(jo_root, "behavior", "usid");
+
+ /* 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;
+}
+
+json_object *srv6_locator_detailed_json(const struct srv6_locator *loc)
+{
+ 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 */
+ json_object_string_addf(jo_root, "prefix", "%pFX", &loc->prefix);
+
+ /* set block_bits_length */
+ json_object_int_add(jo_root, "blockBitsLength", loc->block_bits_length);
+
+ /* set node_bits_length */
+ json_object_int_add(jo_root, "nodeBitsLength", loc->node_bits_length);
+
+ /* set function_bits_length */
+ json_object_int_add(jo_root, "functionBitsLength",
+ loc->function_bits_length);
+
+ /* set argument_bits_length */
+ json_object_int_add(jo_root, "argumentBitsLength",
+ loc->argument_bits_length);
+
+ /* set true if the locator is a Micro-segment (uSID) locator */
+ if (CHECK_FLAG(loc->flags, SRV6_LOCATOR_USID))
+ json_object_string_add(jo_root, "behavior", "usid");
+
+ /* set algonum */
+ json_object_int_add(jo_root, "algoNum", loc->algonum);
+
+ /* 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_detailed_json(chunk);
+ json_object_array_add(jo_chunks, jo_chunk);
+ }
+
+ return jo_root;
+}
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