staticd/static_routes.h

   1 /*
   2  * STATICd - static routes header
   3  * Copyright (C) 2018 Cumulus Networks, Inc.
   4  *               Donald Sharp
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the Free
   8  * Software Foundation; either version 2 of the License, or (at your option)
   9  * any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14  * more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; see the file COPYING; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20 #ifndef __STATIC_ROUTES_H__
  21 #define __STATIC_ROUTES_H__
  22
  23 #include "lib/mpls.h"
  24
  25 /* Static route label information */
  26 struct static_nh_label {
  27         uint8_t num_labels;
  28         uint8_t reserved[3];
  29         mpls_label_t label[MPLS_MAX_LABELS];
  30 };
  31
  32 enum static_blackhole_type {
  33         STATIC_BLACKHOLE_DROP = 0,
  34         STATIC_BLACKHOLE_NULL,
  35         STATIC_BLACKHOLE_REJECT
  36 };
  37
  38 typedef enum {
  39         STATIC_IFNAME,
  40         STATIC_IPV4_GATEWAY,
  41         STATIC_IPV4_GATEWAY_IFNAME,
  42         STATIC_BLACKHOLE,
  43         STATIC_IPV6_GATEWAY,
  44         STATIC_IPV6_GATEWAY_IFNAME,
  45 } static_types;
  46
  47 /* Static route information. */
  48 struct static_route {
  49         /* For linked list. */
  50         struct static_route *prev;
  51         struct static_route *next;
  52
  53         /* VRF identifier. */
  54         vrf_id_t vrf_id;
  55         vrf_id_t nh_vrf_id;
  56         char nh_vrfname[VRF_NAMSIZ + 1];
  57
  58         /* Administrative distance. */
  59         uint8_t distance;
  60
  61         /* Tag */
  62         route_tag_t tag;
  63
  64         /* Flag for this static route's type. */
  65         static_types type;
  66
  67         /*
  68          * Nexthop value.
  69          */
  70         enum static_blackhole_type bh_type;
  71         union g_addr addr;
  72         ifindex_t ifindex;
  73         bool nh_registered;
  74         bool nh_valid;
  75
  76         char ifname[INTERFACE_NAMSIZ + 1];
  77
  78         /* Label information */
  79         struct static_nh_label snh_label;
  80
  81         uint32_t table_id;
  82
  83         /*
  84          * Whether to pretend the nexthop is directly attached to the specified
  85          * link. Only meaningful when both a gateway address and interface name
  86          * are specified.
  87          */
  88         bool onlink;
  89 };
  90
  91 extern bool mpls_enabled;
  92
  93 extern struct zebra_privs_t static_privs;
  94
  95 void static_fixup_vrf_ids(struct static_vrf *svrf);
  96
  97 extern int static_add_route(afi_t afi, safi_t safi, uint8_t type,
  98                             struct prefix *p, struct prefix_ipv6 *src_p,
  99                             union g_addr *gate, const char *ifname,
 100                             enum static_blackhole_type bh_type, route_tag_t tag,
 101                             uint8_t distance, struct static_vrf *svrf,
 102                             struct static_vrf *nh_svrf,
 103                             struct static_nh_label *snh_label,
 104                             uint32_t table_id, bool onlink);
 105
 106 extern int static_delete_route(afi_t afi, safi_t safi, uint8_t type,
 107                                struct prefix *p, struct prefix_ipv6 *src_p,
 108                                union g_addr *gate, const char *ifname,
 109                                route_tag_t tag, uint8_t distance,
 110                                struct static_vrf *svrf,
 111                                struct static_nh_label *snh_label,
 112                                uint32_t table_id);
 113
 114 extern void static_cleanup_vrf_ids(struct static_vrf *disable_svrf);
 115
 116 extern void static_ifindex_update(struct interface *ifp, bool up);
 117 #endif