Merge pull request #13649 from donaldsharp/unlock_the_node_or_else

[mirror_frr.git] / lib / mpls.h

diff --git a/lib/mpls.h b/lib/mpls.h
index 126dbf753d47876fbc7ec09c1bbc894e7f81bca2..dc7f912c289311106ee00113ee1eca58695994a5 100644 (file)
--- a/lib/mpls.h
+++ b/lib/mpls.h
@@ -1,28 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * MPLS definitions
  * Copyright 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 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 _QUAGGA_MPLS_H
 #define _QUAGGA_MPLS_H
 
 #include <zebra.h>
+#include <vxlan.h>
 #include <arpa/inet.h>
 
 #ifdef __cplusplus
@@ -72,8 +58,7 @@ extern "C" {
 /* Maximum # labels that can be pushed. */
 #define MPLS_MAX_LABELS                    16
 
-#define IS_MPLS_RESERVED_LABEL(label)                                          \
-       (label >= MPLS_LABEL_RESERVED_MIN && label <= MPLS_LABEL_RESERVED_MAX)
+#define IS_MPLS_RESERVED_LABEL(label) (label <= MPLS_LABEL_RESERVED_MAX)
 
 #define IS_MPLS_UNRESERVED_LABEL(label)                                        \
        (label >= MPLS_LABEL_UNRESERVED_MIN                                    \
@@ -129,10 +114,37 @@ enum lsp_types_t {
        ZEBRA_LSP_OSPF_SR = 4,/* OSPF Segment Routing LSP. */
        ZEBRA_LSP_ISIS_SR = 5,/* IS-IS Segment Routing LSP. */
        ZEBRA_LSP_SHARP = 6,  /* Identifier for test protocol */
+       ZEBRA_LSP_SRTE = 7,   /* SR-TE LSP */
+       ZEBRA_LSP_EVPN = 8,  /* EVPN VNI Label */
 };
 
 /* Functions for basic label operations. */
 
+static inline void vni2label(vni_t vni, mpls_label_t *label)
+{
+       uint8_t *tag = (uint8_t *)label;
+
+       assert(tag);
+
+       tag[0] = (vni >> 16) & 0xFF;
+       tag[1] = (vni >> 8) & 0xFF;
+       tag[2] = vni & 0xFF;
+}
+
+static inline vni_t label2vni(const mpls_label_t *label)
+{
+       uint8_t *tag = (uint8_t *)label;
+       vni_t vni;
+
+       assert(tag);
+
+       vni = ((uint32_t)*tag++ << 16);
+       vni |= (uint32_t)*tag++ << 8;
+       vni |= (uint32_t)(*tag & 0xFF);
+
+       return vni;
+}
+
 /* Encode a label stack entry from fields; convert to network byte-order as
  * the Netlink interface expects MPLS labels to be in this format.
  */
@@ -168,8 +180,14 @@ static inline void mpls_lse_decode(mpls_lse_t lse, mpls_label_t *label,
 #define MPLS_INVALID_LABEL_INDEX   0xFFFFFFFF
 
 /* Printable string for labels (with consideration for reserved values). */
-static inline char *label2str(mpls_label_t label, char *buf, size_t len)
+static inline char *label2str(mpls_label_t label, enum lsp_types_t type,
+                             char *buf, size_t len)
 {
+       if (type == ZEBRA_LSP_EVPN) {
+               snprintf(buf, len, "%u", label2vni(&label));
+               return (buf);
+       }
+
        switch (label) {
        case MPLS_LABEL_IPV4_EXPLICIT_NULL:
                strlcpy(buf, "IPv4 Explicit Null", len);
@@ -200,7 +218,7 @@ static inline char *label2str(mpls_label_t label, char *buf, size_t len)
                        snprintf(buf, len, "Reserved (%u)", label);
                else
                        snprintf(buf, len, "%u", label);
-               return (buf);
+               return buf;
        }
 }
 
@@ -217,7 +235,7 @@ int mpls_str2label(const char *label_str, uint8_t *num_labels,
  * Label to string conversion, labels in string separated by '/'.
  */
 char *mpls_label2str(uint8_t num_labels, const mpls_label_t *labels, char *buf,
-                    int len, int pretty);
+                    int len, enum lsp_types_t type, int pretty);
 
 #ifdef __cplusplus
 }