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mirror_frr/zebra/interface.h
Donald Sharp 3689905d32 zebra: Add interface sysctl ignore on linkdown status 
Add the ability to decode the ignore on linkdown nexthop
status for an interface.

Signed-off-by: Donald Sharp <sharpd@nvidia.com>
2022-06-23 11:23:37 -04:00

354 lines
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/* Interface function header.
* Copyright (C) 1999 Kunihiro Ishiguro
*
* 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_INTERFACE_H
#define _ZEBRA_INTERFACE_H
#include "redistribute.h"
#include "vrf.h"
#include "hook.h"
#include "bitfield.h"
#include "zebra/zebra_l2.h"
#include "zebra/zebra_nhg_private.h"
#include "zebra/zebra_router.h"
#include "zebra/rtadv.h"
#ifdef __cplusplus
extern "C" {
#endif
/* For interface multicast configuration. */
#define IF_ZEBRA_MULTICAST_UNSPEC 0
#define IF_ZEBRA_MULTICAST_ON 1
#define IF_ZEBRA_MULTICAST_OFF 2
/* For interface shutdown configuration. */
#define IF_ZEBRA_SHUTDOWN_OFF 0
#define IF_ZEBRA_SHUTDOWN_ON 1
#define IF_VLAN_BITMAP_MAX 4096
/* Zebra interface type - ones of interest. */
enum zebra_iftype {
ZEBRA_IF_OTHER = 0, /* Anything else */
ZEBRA_IF_VXLAN, /* VxLAN interface */
ZEBRA_IF_VRF, /* VRF device */
ZEBRA_IF_BRIDGE, /* bridge device */
ZEBRA_IF_VLAN, /* VLAN sub-interface */
ZEBRA_IF_MACVLAN, /* MAC VLAN interface*/
ZEBRA_IF_VETH, /* VETH interface*/
ZEBRA_IF_BOND, /* Bond */
ZEBRA_IF_BOND_SLAVE, /* Bond */
ZEBRA_IF_GRE, /* GRE interface */
};
/* Zebra "slave" interface type */
enum zebra_slave_iftype {
ZEBRA_IF_SLAVE_NONE, /* Not a slave */
ZEBRA_IF_SLAVE_VRF, /* Member of a VRF */
ZEBRA_IF_SLAVE_BRIDGE, /* Member of a bridge */
ZEBRA_IF_SLAVE_BOND, /* Bond member */
ZEBRA_IF_SLAVE_OTHER, /* Something else - e.g., bond slave */
};
struct irdp_interface;
/* Ethernet segment info used for setting up EVPN multihoming */
struct zebra_evpn_es;
struct zebra_es_if_info {
/* type-3 esi config */
struct ethaddr sysmac;
uint32_t lid; /* local-id; has to be unique per-ES-sysmac */
esi_t esi;
uint16_t df_pref;
uint8_t flags;
#define ZIF_CFG_ES_FLAG_BYPASS (1 << 0)
struct zebra_evpn_es *es; /* local ES */
};
enum zebra_if_flags {
/* device has been configured as an uplink for
* EVPN multihoming
*/
ZIF_FLAG_EVPN_MH_UPLINK = (1 << 0),
ZIF_FLAG_EVPN_MH_UPLINK_OPER_UP = (1 << 1),
/* Dataplane protodown-on */
ZIF_FLAG_PROTODOWN = (1 << 2),
/* Dataplane protodown-on Queued to the dplane */
ZIF_FLAG_SET_PROTODOWN = (1 << 3),
/* Dataplane protodown-off Queued to the dplane */
ZIF_FLAG_UNSET_PROTODOWN = (1 << 4),
/* LACP bypass state is set by the dataplane on a bond member
* and inherited by the bond (if one or more bond members are in
* a bypass state the bond is placed in a bypass state)
*/
ZIF_FLAG_LACP_BYPASS = (1 << 5)
};
#define ZEBRA_IF_IS_PROTODOWN(zif) ((zif)->flags & ZIF_FLAG_PROTODOWN)
#define ZEBRA_IF_IS_PROTODOWN_ONLY_EXTERNAL(zif) \
((zif)->protodown_rc == ZEBRA_PROTODOWN_EXTERNAL)
/* `zebra' daemon local interface structure. */
struct zebra_if {
/* back pointer to the interface */
struct interface *ifp;
enum zebra_if_flags flags;
/* Shutdown configuration. */
uint8_t shutdown;
/* Multicast configuration. */
uint8_t multicast;
/* MPLS status. */
bool mpls;
/* Linkdown status */
bool linkdown;
/* Router advertise configuration. */
uint8_t rtadv_enable;
/* Installed addresses chains tree. */
struct route_table *ipv4_subnets;
/* Nexthops pointing to this interface */
/**
* Any nexthop that we get should have an
* interface. When an interface goes down,
* we will use this list to update the nexthops
* pointing to it with that info.
*/
struct nhg_connected_tree_head nhg_dependents;
/* Information about up/down changes */
unsigned int up_count;
char up_last[FRR_TIMESTAMP_LEN];
unsigned int down_count;
char down_last[FRR_TIMESTAMP_LEN];
struct rtadvconf rtadv;
unsigned int ra_sent, ra_rcvd;
struct irdp_interface *irdp;
#ifdef HAVE_STRUCT_SOCKADDR_DL
union {
/* note that sdl_storage is never accessed, it only exists to
* make space.
* all actual uses refer to sdl - but use sizeof(sdl_storage)!
* this fits
* best with C aliasing rules. */
struct sockaddr_dl sdl;
struct sockaddr_storage sdl_storage;
};
#endif
/* ptm enable configuration */
uint8_t ptm_enable;
/* Zebra interface and "slave" interface type */
enum zebra_iftype zif_type;
enum zebra_slave_iftype zif_slave_type;
/* Additional L2 info, depends on zif_type */
union zebra_l2if_info l2info;
/* For members of a bridge, link to bridge. */
/* Note: If additional fields become necessary, this can be modified to
* be a pointer to a dynamically allocd struct.
*/
struct zebra_l2info_brslave brslave_info;
struct zebra_l2info_bondslave bondslave_info;
struct zebra_l2info_bond bond_info;
/* ethernet segment */
struct zebra_es_if_info es_info;
/* bitmap of vlans associated with this interface */
bitfield_t vlan_bitmap;
/* An interface can be error-disabled if a protocol (such as EVPN or
* VRRP) detects a problem with keeping it operationally-up.
* If any of the protodown bits are set protodown-on is programmed
* in the dataplane. This results in a carrier/L1 down on the
* physical device.
*/
uint32_t protodown_rc;
/* list of zebra_mac entries using this interface as destination */
struct list *mac_list;
/* Link fields - for sub-interfaces. */
ifindex_t link_ifindex;
struct interface *link;
uint8_t speed_update_count;
struct thread *speed_update;
/*
* Does this interface have a v6 to v4 ll neighbor entry
* for bgp unnumbered?
*/
bool v6_2_v4_ll_neigh_entry;
char neigh_mac[6];
struct in6_addr v6_2_v4_ll_addr6;
/* The description of the interface */
char *desc;
};
DECLARE_HOOK(zebra_if_extra_info, (struct vty * vty, struct interface *ifp),
(vty, ifp));
DECLARE_HOOK(zebra_if_config_wr, (struct vty * vty, struct interface *ifp),
(vty, ifp));
#define IS_ZEBRA_IF_VRF(ifp) \
(((struct zebra_if *)(ifp->info))->zif_type == ZEBRA_IF_VRF)
#define IS_ZEBRA_IF_BRIDGE(ifp) \
(((struct zebra_if *)(ifp->info))->zif_type == ZEBRA_IF_BRIDGE)
#define IS_ZEBRA_IF_VLAN(ifp) \
(((struct zebra_if *)(ifp->info))->zif_type == ZEBRA_IF_VLAN)
#define IS_ZEBRA_IF_VXLAN(ifp) \
(((struct zebra_if *)(ifp->info))->zif_type == ZEBRA_IF_VXLAN)
#define IS_ZEBRA_IF_MACVLAN(ifp) \
(((struct zebra_if *)(ifp->info))->zif_type == ZEBRA_IF_MACVLAN)
#define IS_ZEBRA_IF_VETH(ifp) \
(((struct zebra_if *)(ifp->info))->zif_type == ZEBRA_IF_VETH)
#define IS_ZEBRA_IF_BOND(ifp) \
(((struct zebra_if *)(ifp->info))->zif_type == ZEBRA_IF_BOND)
#define IS_ZEBRA_IF_GRE(ifp) \
(((struct zebra_if *)(ifp->info))->zif_type == ZEBRA_IF_GRE)
#define IS_ZEBRA_IF_BRIDGE_SLAVE(ifp) \
(((struct zebra_if *)(ifp->info))->zif_slave_type \
== ZEBRA_IF_SLAVE_BRIDGE)
#define IS_ZEBRA_IF_VRF_SLAVE(ifp) \
(((struct zebra_if *)(ifp->info))->zif_slave_type == ZEBRA_IF_SLAVE_VRF)
#define IS_ZEBRA_IF_BOND_SLAVE(ifp) \
(((struct zebra_if *)(ifp->info))->zif_slave_type \
== ZEBRA_IF_SLAVE_BOND)
extern void zebra_if_init(void);
extern struct interface *if_lookup_by_index_per_ns(struct zebra_ns *, uint32_t);
extern struct interface *if_lookup_by_name_per_ns(struct zebra_ns *,
const char *);
extern struct interface *if_link_per_ns(struct zebra_ns *, struct interface *);
extern const char *ifindex2ifname_per_ns(struct zebra_ns *, unsigned int);
extern void if_unlink_per_ns(struct interface *);
extern void if_nbr_mac_to_ipv4ll_neigh_update(struct interface *fip,
char mac[6],
struct in6_addr *address,
int add);
extern void if_nbr_ipv6ll_to_ipv4ll_neigh_update(struct interface *ifp,
struct in6_addr *address,
int add);
extern void if_nbr_ipv6ll_to_ipv4ll_neigh_del_all(struct interface *ifp);
extern void if_delete_update(struct interface **ifp);
extern void if_add_update(struct interface *ifp);
extern void if_up(struct interface *ifp, bool install_connected);
extern void if_down(struct interface *);
extern void if_refresh(struct interface *);
extern void if_flags_update(struct interface *, uint64_t);
extern int if_subnet_add(struct interface *, struct connected *);
extern int if_subnet_delete(struct interface *, struct connected *);
extern int ipv6_address_configured(struct interface *ifp);
extern void if_handle_vrf_change(struct interface *ifp, vrf_id_t vrf_id);
extern void zebra_if_update_link(struct interface *ifp, ifindex_t link_ifindex,
ns_id_t ns_id);
extern void zebra_if_update_all_links(struct zebra_ns *zns);
/**
* Directly update entire protodown & reason code bitfield.
*/
extern int zebra_if_update_protodown_rc(struct interface *ifp, bool new_down,
uint32_t new_protodown_rc);
/**
* Set protodown with single reason.
*/
extern int zebra_if_set_protodown(struct interface *ifp, bool down,
enum protodown_reasons new_reason);
extern int if_ip_address_install(struct interface *ifp, struct prefix *prefix,
const char *label, struct prefix *pp);
extern int if_ipv6_address_install(struct interface *ifp, struct prefix *prefix,
const char *label);
extern int if_ip_address_uinstall(struct interface *ifp, struct prefix *prefix);
extern int if_shutdown(struct interface *ifp);
extern int if_no_shutdown(struct interface *ifp);
extern int if_multicast_set(struct interface *ifp);
extern int if_multicast_unset(struct interface *ifp);
extern int if_linkdetect(struct interface *ifp, bool detect);
extern void if_addr_wakeup(struct interface *ifp);
/* Nexthop group connected functions */
extern void if_nhg_dependents_add(struct interface *ifp,
struct nhg_hash_entry *nhe);
extern void if_nhg_dependents_del(struct interface *ifp,
struct nhg_hash_entry *nhe);
extern unsigned int if_nhg_dependents_count(const struct interface *ifp);
extern bool if_nhg_dependents_is_empty(const struct interface *ifp);
extern void vrf_add_update(struct vrf *vrfp);
extern void zebra_l2_map_slave_to_bond(struct zebra_if *zif, vrf_id_t vrf);
extern void zebra_l2_unmap_slave_from_bond(struct zebra_if *zif);
extern const char *zebra_protodown_rc_str(uint32_t protodown_rc, char *pd_buf,
uint32_t pd_buf_len);
void zebra_if_dplane_result(struct zebra_dplane_ctx *ctx);
#ifdef HAVE_PROC_NET_DEV
extern void ifstat_update_proc(void);
#endif /* HAVE_PROC_NET_DEV */
#ifdef HAVE_NET_RT_IFLIST
extern void ifstat_update_sysctl(void);
#endif /* HAVE_NET_RT_IFLIST */
#ifdef HAVE_PROC_NET_DEV
extern int interface_list_proc(void);
#endif /* HAVE_PROC_NET_DEV */
#ifdef HAVE_PROC_NET_IF_INET6
extern int ifaddr_proc_ipv6(void);
#endif /* HAVE_PROC_NET_IF_INET6 */
#ifdef __cplusplus
}
#endif
#endif /* _ZEBRA_INTERFACE_H */
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