Quagga: Definitions for static LSPs

Signed-off-by: Vivek Venkatraman <vivek@cumulusnetworks.com>
Reviewed-by:   Donald Sharp <sharpd@cumulusnetworks.com>

Ticket: CM-4804, ...
Reviewed By: CCR-3084
Testing Done: Not relevant

1 files changed, 155 insertions, 0 deletions

diff --git a/zebra/zebra_mpls.h b/zebra/zebra_mpls.h
new file mode 100644
index 000000000..b24a58e16
--- /dev/null
+++ b/zebra/zebra_mpls.h
@@ -0,0 +1,155 @@
+/*
+ * Zebra MPLS Data structures and definitions
+ * Copyright (C) 2015 Cumulus Networks, Inc.
+ *
+ * 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 GNU Zebra; see the file COPYING.  If not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+
+#ifndef _ZEBRA_MPLS_H
+#define _ZEBRA_MPLS_H
+
+#include "prefix.h"
+#include "table.h"
+#include "queue.h"
+#include "hash.h"
+#include "jhash.h"
+#include "nexthop.h"
+#include "vty.h"
+#include "memory.h"
+#include "mpls.h"
+#include "zebra/zserv.h"
+
+
+/* Definitions and macros. */
+
+#define NHLFE_FAMILY(nhlfe)                        \
+  (((nhlfe)->nexthop->type == NEXTHOP_TYPE_IPV6 || \
+    (nhlfe)->nexthop->type == NEXTHOP_TYPE_IPV6_IFINDEX) ? AF_INET6 : AF_INET)
+
+
+/* Typedefs */
+
+typedef struct zebra_ile_t_ zebra_ile_t;
+typedef struct zebra_snhlfe_t_ zebra_snhlfe_t;
+typedef struct zebra_slsp_t_ zebra_slsp_t;
+typedef struct zebra_nhlfe_t_ zebra_nhlfe_t;
+typedef struct zebra_lsp_t_ zebra_lsp_t;
+
+/* LSP types. */
+enum lsp_types_t
+{
+  ZEBRA_LSP_INVALID = 0,     /* Invalid. */
+  ZEBRA_LSP_STATIC = 1,      /* Static LSP. */
+};
+
+/*
+ * (Outgoing) nexthop label forwarding entry configuration
+ */
+struct zebra_snhlfe_t_
+{
+  /* Nexthop information */
+  enum nexthop_types_t gtype;
+  union g_addr gate;
+  char *ifname;
+  ifindex_t ifindex;
+
+  /* Out label. */
+  mpls_label_t out_label;
+
+  /* Backpointer to base entry. */
+  zebra_slsp_t *slsp;
+
+  /* Pointers to more outgoing information for same in-label */
+  zebra_snhlfe_t *next;
+  zebra_snhlfe_t *prev;
+};
+
+/*
+ * (Outgoing) nexthop label forwarding entry
+ */
+struct zebra_nhlfe_t_
+{
+  /* Type of entry - static etc. */
+  enum lsp_types_t type;
+
+  /* Nexthop information (with outgoing label) */
+  struct nexthop *nexthop;
+
+  /* Backpointer to base entry. */
+  zebra_lsp_t *lsp;
+
+  /* Runtime info - flags, pointers etc. */
+  u_int32_t flags;
+#define NHLFE_FLAG_CHANGED     (1 << 0)
+#define NHLFE_FLAG_SELECTED    (1 << 1)
+#define NHLFE_FLAG_MULTIPATH   (1 << 2)
+#define NHLFE_FLAG_DELETED     (1 << 3)
+#define NHLFE_FLAG_INSTALLED   (1 << 4)
+
+  zebra_nhlfe_t *next;
+  zebra_nhlfe_t *prev;
+  u_char distance;
+};
+
+/*
+ * Incoming label entry
+ */
+struct zebra_ile_t_
+{
+  mpls_label_t in_label;
+};
+
+/*
+ * Label swap entry static configuration.
+ */
+struct zebra_slsp_t_
+{
+  /* Incoming label */
+  zebra_ile_t ile;
+
+  /* List of outgoing nexthop static configuration */
+  zebra_snhlfe_t *snhlfe_list;
+
+};
+
+/*
+ * Label swap entry (ile -> list of nhlfes)
+ */
+struct zebra_lsp_t_
+{
+  /* Incoming label */
+  zebra_ile_t ile;
+
+  /* List of NHLFE, pointer to best and num equal-cost. */
+  zebra_nhlfe_t *nhlfe_list;
+  zebra_nhlfe_t *best_nhlfe;
+  u_int32_t num_ecmp;
+
+  /* Flags */
+  u_int32_t flags;
+#define LSP_FLAG_SCHEDULED        (1 << 0)
+#define LSP_FLAG_INSTALLED        (1 << 1)
+#define LSP_FLAG_CHANGED          (1 << 2)
+
+  /* Address-family of NHLFE - saved here for delete. All NHLFEs */
+  /* have to be of the same AF */
+  u_char addr_family;
+};
+
+
+#endif /*_ZEBRA_MPLS_H */