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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* STATICd - static routes header
* Copyright (C) 2018 Cumulus Networks, Inc.
* Donald Sharp
*/
#ifndef __STATIC_ROUTES_H__
#define __STATIC_ROUTES_H__
#include "lib/bfd.h"
#include "lib/mpls.h"
#include "table.h"
#include "memory.h"
#ifdef __cplusplus
extern "C" {
#endif
DECLARE_MGROUP(STATIC);
#include "staticd/static_vrf.h"
/* Static route label information */
struct static_nh_label {
uint8_t num_labels;
uint8_t reserved[3];
mpls_label_t label[MPLS_MAX_LABELS];
};
enum static_blackhole_type {
STATIC_BLACKHOLE_DROP = 0,
STATIC_BLACKHOLE_NULL,
STATIC_BLACKHOLE_REJECT
};
/*
* The order for below macros should be in sync with
* yang model typedef nexthop-type
*/
enum static_nh_type {
STATIC_IFNAME = 1,
STATIC_IPV4_GATEWAY,
STATIC_IPV4_GATEWAY_IFNAME,
STATIC_IPV6_GATEWAY,
STATIC_IPV6_GATEWAY_IFNAME,
STATIC_BLACKHOLE,
};
/*
* Route Creation gives us:
* START -> Initial State, only exit is when we send the route to
* zebra for installation
* When we send the route to Zebra move to SENT_TO_ZEBRA
* SENT_TO_ZEBRA -> A way to notice that we've sent the route to zebra
* But have not received a response on it's status yet
* After The response from zebra we move to INSTALLED or FAILED
* INSTALLED -> Route was accepted
* FAILED -> Route was rejected
* When we receive notification about a nexthop that a route uses
* We move the route back to START and initiate the process again.
*/
enum static_install_states {
STATIC_START,
STATIC_SENT_TO_ZEBRA,
STATIC_INSTALLED,
STATIC_NOT_INSTALLED,
};
PREDECL_DLIST(static_path_list);
PREDECL_DLIST(static_nexthop_list);
/* Static route information */
struct static_route_info {
struct static_vrf *svrf;
safi_t safi;
/* path list */
struct static_path_list_head path_list;
};
/* Static path information */
struct static_path {
/* Route node back pointer. */
struct route_node *rn;
/* Linkage for static path lists */
struct static_path_list_item list;
/* Administrative distance. */
uint8_t distance;
/* Tag */
route_tag_t tag;
/* Table-id */
uint32_t table_id;
/* Nexthop list */
struct static_nexthop_list_head nexthop_list;
};
DECLARE_DLIST(static_path_list, struct static_path, list);
/* Static route information. */
struct static_nexthop {
/* Path back pointer. */
struct static_path *pn;
/* For linked list. */
struct static_nexthop_list_item list;
/* VRF identifier. */
vrf_id_t nh_vrf_id;
char nh_vrfname[VRF_NAMSIZ + 1];
/*
* States that we walk the route through
* To know where we are.
*/
enum static_install_states state;
/* Flag for this static route's type. */
enum static_nh_type type;
/*
* Nexthop value.
*/
enum static_blackhole_type bh_type;
union g_addr addr;
ifindex_t ifindex;
bool nh_registered;
bool nh_valid;
char ifname[INTERFACE_NAMSIZ + 1];
/* Label information */
struct static_nh_label snh_label;
/*
* Whether to pretend the nexthop is directly attached to the specified
* link. Only meaningful when both a gateway address and interface name
* are specified.
*/
bool onlink;
/* SR-TE color */
uint32_t color;
/** BFD integration data. */
struct bfd_session_params *bsp;
/** Back pointer for route node. */
struct route_node *rn;
/** Path connection status. */
bool path_down;
};
DECLARE_DLIST(static_nexthop_list, struct static_nexthop, list);
/*
* rib_dest_from_rnode
*/
static inline struct static_route_info *
static_route_info_from_rnode(struct route_node *rn)
{
return (struct static_route_info *)(rn->info);
}
static inline void static_get_nh_type(enum static_nh_type stype, char *type,
size_t size)
{
switch (stype) {
case STATIC_IFNAME:
strlcpy(type, "ifindex", size);
break;
case STATIC_IPV4_GATEWAY:
strlcpy(type, "ip4", size);
break;
case STATIC_IPV4_GATEWAY_IFNAME:
strlcpy(type, "ip4-ifindex", size);
break;
case STATIC_BLACKHOLE:
strlcpy(type, "blackhole", size);
break;
case STATIC_IPV6_GATEWAY:
strlcpy(type, "ip6", size);
break;
case STATIC_IPV6_GATEWAY_IFNAME:
strlcpy(type, "ip6-ifindex", size);
break;
};
}
extern bool mpls_enabled;
extern uint32_t zebra_ecmp_count;
extern struct zebra_privs_t static_privs;
void static_fixup_vrf_ids(struct static_vrf *svrf);
extern struct static_nexthop *
static_add_nexthop(struct static_path *pn, enum static_nh_type type,
struct ipaddr *ipaddr, const char *ifname,
const char *nh_vrf, uint32_t color);
extern void static_install_nexthop(struct static_nexthop *nh);
extern void static_delete_nexthop(struct static_nexthop *nh);
extern void static_cleanup_vrf_ids(struct static_vrf *disable_svrf);
extern void static_install_intf_nh(struct interface *ifp);
extern void static_ifindex_update(struct interface *ifp, bool up);
extern void static_install_path(struct static_path *pn);
extern struct route_node *static_add_route(afi_t afi, safi_t safi,
struct prefix *p,
struct prefix_ipv6 *src_p,
struct static_vrf *svrf);
extern void static_del_route(struct route_node *rn);
extern struct static_path *static_add_path(struct route_node *rn,
uint32_t table_id, uint8_t distance);
extern void static_del_path(struct static_path *pn);
extern bool static_add_nexthop_validate(const char *nh_vrf_name,
enum static_nh_type type,
struct ipaddr *ipaddr);
extern struct stable_info *static_get_stable_info(struct route_node *rn);
extern void zebra_stable_node_cleanup(struct route_table *table,
struct route_node *node);
/*
* Max string return via API static_get_nh_str in size_t
*/
#define NEXTHOP_STR (INET6_ADDRSTRLEN + INTERFACE_NAMSIZ + 25)
/*
* For the given nexthop, returns the string
* nexthop : returns the formatted string in nexthop
* size : max size of formatted string
*/
extern void static_get_nh_str(struct static_nexthop *nh, char *nexthop,
size_t size);
/*
* BFD integration.
*/
extern void static_next_hop_bfd_source(struct static_nexthop *sn,
const struct ipaddr *source);
extern void static_next_hop_bfd_auto_source(struct static_nexthop *sn);
extern void static_next_hop_bfd_monitor_enable(struct static_nexthop *sn,
const struct lyd_node *dnode);
extern void static_next_hop_bfd_monitor_disable(struct static_nexthop *sn);
extern void static_next_hop_bfd_profile(struct static_nexthop *sn,
const char *name);
extern void static_next_hop_bfd_multi_hop(struct static_nexthop *sn, bool mhop);
/** Call this function after zebra client initialization. */
extern void static_bfd_initialize(struct zclient *zc, struct thread_master *tm);
extern void static_bfd_show(struct vty *vty, bool isjson);
#ifdef __cplusplus
}
#endif
#endif
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