Add support for SRv6 SID Manager

doc/user/zebra.rst

@@ -1021,6 +1021,35 @@ and this section also helps that case.
       !
    ...
 
+.. clicmd:: format NAME
+
+   Specify the SID allocation schema for the SIDs allocated from this locator. Currently,
+   FRR supports supports the following allocation schemas:
+
+   - `usid-f3216`
+   - `uncompressed`
+
+::
+
+   router# configure terminal
+   router(config)# segment-routinig
+   router(config-sr)# srv6
+   router(config-srv6)# locators
+   router(config-srv6-locators)# locator loc1
+   router(config-srv6-locator)# prefix fc00:0:1::/48
+   router(config-srv6-locator)# format usid-f3216
+
+   router(config-srv6-locator)# show run
+   ...
+   segment-routing
+    srv6
+     locators
+      locator loc1
+       prefix fc00:0:1::/48
+       format usid-f3216
+      !
+   ...
+
 .. clicmd:: encapsulation
 
    Configure parameters for SRv6 encapsulation.
@@ -1029,6 +1058,61 @@ and this section also helps that case.
 
    Configure the source address of the outer encapsulating IPv6 header.
 
+.. clicmd:: formats
+
+   Configure SRv6 SID formats.
+
+.. clicmd:: format NAME
+
+   Configure SRv6 SID format.
+
+.. clicmd:: compressed usid
+
+   Enable SRv6 uSID compression and configure SRv6 uSID compression parameters.
+
+.. clicmd:: local-id-block start START
+
+   Configure the start value for the Local ID Block (LIB).
+
+.. clicmd:: local-id-block explicit start START end END
+
+   Configure the start/end values for the Explicit LIB (ELIB).
+
+.. clicmd:: wide-local-id-block start START end END
+
+   Configure the start/end values for the Wide LIB (W-LIB).
+
+.. clicmd:: wide-local-id-block explicit start START
+
+   Configure the start value for the Explicit Wide LIB (EW-LIB).
+
+::
+
+   router# configure terminal
+   router(config)# segment-routinig
+   router(config-sr)# srv6
+   router(config-srv6)# formats
+   router(config-srv6-formats)# format usid-f3216
+   router(config-srv6-format)# compressed usid
+   router(config-srv6-format-usid)# local-id-block start 0xD000
+   router(config-srv6-format-usid)# local-id-block explicit start 0xF000 end 0xFDFF
+   router(config-srv6-format-usid)# wide-local-id-block start 0xFFF4 end 0xFFF5
+   router(config-srv6-format-usid)# wide-local-id-block explicit start 0xFFF4
+
+   router(config-srv6-locator)# show run
+   ...
+   segment-routing
+    srv6
+     formats
+      format usid-f3216
+       compressed usid
+        local-id-block start 0xD000
+        local-id-block explicit start 0xF000 end 0xFDFF
+        wide-local-id-block start 0xFFF4 end 0xFFF5
+        wide-local-id-block explicit start 0xFFF4
+      !
+   ...
+
 .. _multicast-rib-commands:
 
 Multicast RIB Commands

lib/command.h

@@ -161,6 +161,9 @@ enum node_type {
 	SRV6_LOCS_NODE,		 /* SRv6 locators node */
 	SRV6_LOC_NODE,		 /* SRv6 locator node */
 	SRV6_ENCAP_NODE,		 /* SRv6 encapsulation node */
+	SRV6_SID_FORMATS_NODE,		 /* SRv6 SID formats config node */
+	SRV6_SID_FORMAT_USID_F3216_NODE,		 /* SRv6 uSID f3216 format config node */
+	SRV6_SID_FORMAT_UNCOMPRESSED_F4024_NODE,		 /* SRv6 uncompressed f4024 format config node */
 	VTY_NODE,		 /* Vty node. */
 	FPM_NODE,		 /* Dataplane FPM node. */
 	LINK_PARAMS_NODE,	/* Link-parameters node */

lib/log.c

@@ -436,6 +436,9 @@ static const struct zebra_desc_table command_types[] = {
 	DESC_ENTRY(ZEBRA_SRV6_LOCATOR_DELETE),
 	DESC_ENTRY(ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK),
 	DESC_ENTRY(ZEBRA_SRV6_MANAGER_RELEASE_LOCATOR_CHUNK),
+	DESC_ENTRY(ZEBRA_SRV6_MANAGER_GET_LOCATOR),
+	DESC_ENTRY(ZEBRA_SRV6_MANAGER_GET_SRV6_SID),
+	DESC_ENTRY(ZEBRA_SRV6_MANAGER_RELEASE_SRV6_SID),
 	DESC_ENTRY(ZEBRA_ERROR),
 	DESC_ENTRY(ZEBRA_CLIENT_CAPABILITIES),
 	DESC_ENTRY(ZEBRA_OPAQUE_MESSAGE),
@@ -461,7 +464,8 @@ static const struct zebra_desc_table command_types[] = {
 	DESC_ENTRY(ZEBRA_TC_CLASS_DELETE),
 	DESC_ENTRY(ZEBRA_TC_FILTER_ADD),
 	DESC_ENTRY(ZEBRA_TC_FILTER_DELETE),
-	DESC_ENTRY(ZEBRA_OPAQUE_NOTIFY)
+	DESC_ENTRY(ZEBRA_OPAQUE_NOTIFY),
+	DESC_ENTRY(ZEBRA_SRV6_SID_NOTIFY)
 };
 #undef DESC_ENTRY
 

lib/srv6.c

@@ -10,8 +10,11 @@
 #include "log.h"
 
 DEFINE_QOBJ_TYPE(srv6_locator);
+DEFINE_QOBJ_TYPE(srv6_sid_format);
 DEFINE_MTYPE_STATIC(LIB, SRV6_LOCATOR, "SRV6 locator");
 DEFINE_MTYPE_STATIC(LIB, SRV6_LOCATOR_CHUNK, "SRV6 locator chunk");
+DEFINE_MTYPE_STATIC(LIB, SRV6_SID_FORMAT, "SRv6 SID format");
+DEFINE_MTYPE_STATIC(LIB, SRV6_SID_CTX, "SRv6 SID context");
 
 const char *seg6local_action2str(uint32_t action)
 {
@@ -139,6 +142,21 @@ struct srv6_locator_chunk *srv6_locator_chunk_alloc(void)
 	return chunk;
 }
 
+void srv6_locator_copy(struct srv6_locator *copy,
+		       const struct srv6_locator *locator)
+{
+	strlcpy(copy->name, locator->name, sizeof(locator->name));
+	copy->prefix = locator->prefix;
+	copy->block_bits_length = locator->block_bits_length;
+	copy->node_bits_length = locator->node_bits_length;
+	copy->function_bits_length = locator->function_bits_length;
+	copy->argument_bits_length = locator->argument_bits_length;
+	copy->algonum = locator->algonum;
+	copy->current = locator->current;
+	copy->status_up = locator->status_up;
+	copy->flags = locator->flags;
+}
+
 void srv6_locator_free(struct srv6_locator *locator)
 {
 	if (locator) {
@@ -154,6 +172,59 @@ void srv6_locator_chunk_free(struct srv6_locator_chunk **chunk)
 	XFREE(MTYPE_SRV6_LOCATOR_CHUNK, *chunk);
 }
 
+struct srv6_sid_format *srv6_sid_format_alloc(const char *name)
+{
+	struct srv6_sid_format *format = NULL;
+
+	format = XCALLOC(MTYPE_SRV6_SID_FORMAT, sizeof(struct srv6_sid_format));
+	strlcpy(format->name, name, sizeof(format->name));
+
+	QOBJ_REG(format, srv6_sid_format);
+	return format;
+}
+
+void srv6_sid_format_free(struct srv6_sid_format *format)
+{
+	if (!format)
+		return;
+
+	QOBJ_UNREG(format);
+	XFREE(MTYPE_SRV6_SID_FORMAT, format);
+}
+
+/**
+ * Free an SRv6 SID format.
+ *
+ * @param val SRv6 SID format to be freed
+ */
+void delete_srv6_sid_format(void *val)
+{
+	srv6_sid_format_free((struct srv6_sid_format *)val);
+}
+
+struct srv6_sid_ctx *srv6_sid_ctx_alloc(enum seg6local_action_t behavior,
+					struct in_addr *nh4,
+					struct in6_addr *nh6, vrf_id_t vrf_id)
+{
+	struct srv6_sid_ctx *ctx = NULL;
+
+	ctx = XCALLOC(MTYPE_SRV6_SID_CTX, sizeof(struct srv6_sid_ctx));
+	ctx->behavior = behavior;
+	if (nh4)
+		ctx->nh4 = *nh4;
+	if (nh6)
+		ctx->nh6 = *nh6;
+	if (vrf_id)
+		ctx->vrf_id = vrf_id;
+
+	return ctx;
+}
+
+void srv6_sid_ctx_free(struct srv6_sid_ctx *ctx)
+{
+	XFREE(MTYPE_SRV6_SID_CTX, ctx);
+}
+
 json_object *srv6_locator_chunk_json(const struct srv6_locator_chunk *chunk)
 {
 	json_object *jo_root = NULL;
@@ -223,23 +294,47 @@ json_object *srv6_locator_json(const struct srv6_locator *loc)
 	/* 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");
+	if (loc->sid_format) {
+		/* set block_bits_length */
+		json_object_int_add(jo_root, "blockBitsLength",
+				    loc->sid_format->block_len);
+
+		/* set node_bits_length */
+		json_object_int_add(jo_root, "nodeBitsLength",
+				    loc->sid_format->node_len);
+
+		/* set function_bits_length */
+		json_object_int_add(jo_root, "functionBitsLength",
+				    loc->sid_format->function_len);
+
+		/* set argument_bits_length */
+		json_object_int_add(jo_root, "argumentBitsLength",
+				    loc->sid_format->argument_len);
+
+		/* set true if the locator is a Micro-segment (uSID) locator */
+		if (loc->sid_format->type == SRV6_SID_FORMAT_TYPE_USID)
+			json_object_string_add(jo_root, "behavior", "usid");
+	} else {
+		/* 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",
@@ -272,23 +367,47 @@ json_object *srv6_locator_detailed_json(const struct srv6_locator *loc)
 	/* 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");
+	if (loc->sid_format) {
+		/* set block_bits_length */
+		json_object_int_add(jo_root, "blockBitsLength",
+				    loc->sid_format->block_len);
+
+		/* set node_bits_length */
+		json_object_int_add(jo_root, "nodeBitsLength",
+				    loc->sid_format->node_len);
+
+		/* set function_bits_length */
+		json_object_int_add(jo_root, "functionBitsLength",
+				    loc->sid_format->function_len);
+
+		/* set argument_bits_length */
+		json_object_int_add(jo_root, "argumentBitsLength",
+				    loc->sid_format->argument_len);
+
+		/* set true if the locator is a Micro-segment (uSID) locator */
+		if (loc->sid_format->type == SRV6_SID_FORMAT_TYPE_USID)
+			json_object_string_add(jo_root, "behavior", "usid");
+	} else {
+		/* 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);