Adding upstream version 8.4.4.upstream/8.4.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 135 insertions, 0 deletions

diff --git a/isisd/isis_te.h b/isisd/isis_te.h
new file mode 100644
index 0000000..0352596
--- /dev/null
+++ b/isisd/isis_te.h
@@ -0,0 +1,135 @@
+/*
+ * IS-IS Rout(e)ing protocol - isis_te.c
+ *
+ * This is an implementation of RFC5305, RFC 5307 and RFC 7810
+ *
+ * Author: Olivier Dugeon <olivier.dugeon@orange.com>
+ *
+ * Copyright (C) 2014 - 2019 Orange Labs http://www.orange.com
+ *
+ * This file is part of GNU Zebra.
+ *
+ * GNU Zebra 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, or (at your option) any
+ * later version.
+ *
+ * GNU Zebra 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
+ */
+
+#ifndef _ZEBRA_ISIS_MPLS_TE_H
+#define _ZEBRA_ISIS_MPLS_TE_H
+
+/*
+ * Traffic Engineering information are transport through LSP:
+ *  - Extended IS Reachability          TLV = 22
+ *  - Traffic Engineering Router ID     TLV = 134
+ *  - Extended IP Reachability          TLV = 135
+ *  - Inter-AS Reachability Information TLV = 141
+ *
+ *  and support following sub-TLV:
+ *
+ * Name                           Value   Status
+ * _________________________________________________
+ * Administartive group (color)       3   RFC5305
+ * Link Local/Remote Identifiers      4   RFC5307
+ * IPv4 interface address             6   RFC5305
+ * IPv4 neighbor address              8   RFC5305
+ * Maximum link bandwidth             9   RFC5305
+ * Reservable link bandwidth         10   RFC5305
+ * Unreserved bandwidth              11   RFC5305
+ * TE Default metric                 18   RFC5305
+ * Link Protection Type              20   RFC5307
+ * Interface Switching Capability    21   RFC5307
+ * Remote AS number                  24   RFC5316
+ * IPv4 Remote ASBR identifier       25   RFC5316
+ *
+ * NOTE: RFC5316 is not fully supported in this version
+ * only subTLVs decoding is provided
+ */
+
+/* Following define the type of TE link regarding the various RFC */
+#define STD_TE			0x01
+#define GMPLS			0x02
+#define INTER_AS 		0x04
+#define FLOOD_L1		0x10
+#define FLOOD_L2		0x20
+#define FLOOD_AS                0x40
+#define EMULATED		0x80
+
+#define IS_STD_TE(x) 		(x & STD_TE)
+#define IS_INTER_AS(x) 		(x & INTER_AS)
+#define IS_EMULATED(x)		(x & EMULATED)
+#define IS_FLOOD_L1(x)		(x & FLOOD_L1)
+#define IS_FLOOD_L2(x)		(x & FLOOD_L2)
+#define IS_FLOOD_AS(x)          (x & FLOOD_AS)
+#define IS_INTER_AS_EMU(x) 	(x & INTER_AS & EMULATED)
+#define IS_INTER_AS_AS(x)	(x & INTER_AS & FLOOD_AS)
+
+/*
+ * Note (since release 7.2), subTLVs definition, serialization
+ * and de-serialization have mode to isis_tlvs.[c,h]
+ */
+
+/* Following declaration concerns the MPLS-TE and LINk-TE management */
+typedef enum _status_t { disable, enable, learn } status_t;
+
+/* Mode for Inter-AS LSP */ /* TODO: Check how if LSP is flooded in RFC5316 */
+typedef enum _interas_mode_t { off, region, as, emulate } interas_mode_t;
+
+#define IS_EXT_TE(e)    (e && e->status != 0			\
+			   && e->status != EXT_ADJ_SID		\
+			   && e->status != EXT_LAN_ADJ_SID)
+#define IS_MPLS_TE(a)	(a && a->status == enable)
+#define IS_EXPORT_TE(a) (a->export)
+
+/* Per area MPLS-TE parameters */
+struct ls_ted;
+struct mpls_te_area {
+	/* Status of MPLS-TE: enable or disable */
+	status_t status;
+
+	/* L1, L1-L2, L2-Only */
+	uint8_t level;
+
+	/* RFC5316 */
+	interas_mode_t inter_as;
+	struct in_addr interas_areaid;
+
+	/* MPLS_TE IPv4 & IPv6 Router IDs */
+	struct in_addr router_id;
+	struct in6_addr router_id_ipv6;
+
+	/* Link State Database */
+	struct ls_ted *ted;
+	bool export;
+};
+
+/* Structure to provide parameters to lsp iterate callback function */
+struct isis_te_args {
+	struct ls_ted *ted;
+	struct ls_vertex *vertex;
+	bool export;
+};
+
+enum lsp_event { LSP_UNKNOWN, LSP_ADD, LSP_UPD, LSP_DEL, LSP_INC, LSP_TICK };
+
+/* Prototypes. */
+void isis_mpls_te_init(void);
+void isis_mpls_te_create(struct isis_area *area);
+void isis_mpls_te_disable(struct isis_area *area);
+void isis_mpls_te_term(struct isis_area *area);
+void isis_link_params_update(struct isis_circuit *, struct interface *);
+int isis_mpls_te_update(struct interface *);
+void isis_te_lsp_event(struct isis_lsp *lsp, enum lsp_event event);
+int isis_te_sync_ted(struct zapi_opaque_reg_info dst);
+void isis_te_init_ted(struct isis_area *area);
+
+#endif /* _ZEBRA_ISIS_MPLS_TE_H */