Adding upstream version 8.4.4.upstream/8.4.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 352 insertions, 0 deletions

diff --git a/zebra/interface.h b/zebra/interface.h
new file mode 100644
index 0000000..801078e
--- /dev/null
+++ b/zebra/interface.h
@@ -0,0 +1,352 @@
+
+/* 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 configuration. */
+#define IF_ZEBRA_DATA_UNSPEC 0
+#define IF_ZEBRA_DATA_ON 1
+#define IF_ZEBRA_DATA_OFF 2
+
+#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, linkdownv6;
+
+	/* Is Multicast Forwarding on? */
+	bool v4mcast_on, v6mcast_on;
+
+	/* 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 */