mirror of https://github.com/FRRouting/frr.git
121 lines
3.7 KiB
C
121 lines
3.7 KiB
C
// SPDX-License-Identifier: MIT
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/*
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Copyright 2011 by Matthieu Boutier and Juliusz Chroboczek
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*/
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#ifndef BABEL_INTERFACE_H
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#define BABEL_INTERFACE_H
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#include <zebra.h>
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#include "zclient.h"
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#include "vty.h"
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#include "distribute.h"
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#define CONFIG_DEFAULT 0
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#define CONFIG_NO 1
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#define CONFIG_YES 2
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/* babeld interface information */
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struct babel_interface {
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unsigned short flags; /* see below */
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unsigned short cost;
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int channel;
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struct timeval hello_timeout;
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struct timeval update_timeout;
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struct timeval flush_timeout;
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struct timeval update_flush_timeout;
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unsigned char *ipv4;
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int buffered;
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int bufsize;
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/* Relative position of the Hello message in the send buffer, or
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(-1) if there is none. */
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int buffered_hello;
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char have_buffered_id;
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char have_buffered_nh;
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char have_buffered_prefix;
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unsigned char buffered_id[8];
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unsigned char buffered_nh[4];
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unsigned char buffered_prefix[16];
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unsigned char *sendbuf;
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struct buffered_update *buffered_updates;
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int num_buffered_updates;
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int update_bufsize;
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time_t bucket_time;
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unsigned int bucket;
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time_t last_update_time;
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unsigned short hello_seqno;
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unsigned hello_interval;
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unsigned update_interval;
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/* A higher value means we forget old RTT samples faster. Must be
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between 1 and 256, inclusive. */
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unsigned int rtt_decay;
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/* Parameters for computing the cost associated to RTT. */
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unsigned int rtt_min;
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unsigned int rtt_max;
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unsigned int max_rtt_penalty;
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/* For filter type slot. */
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struct access_list *list[DISTRIBUTE_MAX]; /* Access-list. */
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struct prefix_list *prefix[DISTRIBUTE_MAX]; /* Prefix-list. */
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};
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typedef struct babel_interface babel_interface_nfo;
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static inline babel_interface_nfo* babel_get_if_nfo(struct interface *ifp)
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{
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return ((babel_interface_nfo*) ifp->info);
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}
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/* babel_interface_nfo flags */
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#define BABEL_IF_IS_UP (1 << 0)
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#define BABEL_IF_WIRED (1 << 1)
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#define BABEL_IF_SPLIT_HORIZON (1 << 2)
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#define BABEL_IF_LQ (1 << 3)
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#define BABEL_IF_FARAWAY (1 << 4)
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#define BABEL_IF_TIMESTAMPS (1 << 5)
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/* Only INTERFERING can appear on the wire. */
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#define BABEL_IF_CHANNEL_UNKNOWN 0
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#define BABEL_IF_CHANNEL_INTERFERING 255
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#define BABEL_IF_CHANNEL_NONINTERFERING -2
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static inline int
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if_up(struct interface *ifp)
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{
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return (if_is_operative(ifp) &&
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CHECK_FLAG(babel_get_if_nfo(ifp)->flags, BABEL_IF_IS_UP));
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}
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struct buffered_update {
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unsigned char id[8];
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unsigned char prefix[16];
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unsigned char plen;
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unsigned char pad[3];
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};
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/* init function */
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void babel_if_init(void);
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/* Callback functions for zebra client */
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int babel_interface_up (int, struct zclient *, zebra_size_t, vrf_id_t);
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int babel_interface_down (int, struct zclient *, zebra_size_t, vrf_id_t);
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int babel_interface_add (int, struct zclient *, zebra_size_t, vrf_id_t);
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int babel_interface_delete (int, struct zclient *, zebra_size_t, vrf_id_t);
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int babel_interface_address_add (int, struct zclient *, zebra_size_t, vrf_id_t);
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int babel_interface_address_delete (int, struct zclient *, zebra_size_t, vrf_id_t);
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int babel_ifp_create(struct interface *ifp);
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int babel_ifp_up(struct interface *ifp);
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int babel_ifp_down(struct interface *ifp);
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int babel_ifp_destroy(struct interface *ifp);
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unsigned jitter(babel_interface_nfo *, int);
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unsigned update_jitter(babel_interface_nfo *babel_ifp, int urgent);
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/* return "true" if "address" is one of our ipv6 addresses */
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int is_interface_ll_address(struct interface *ifp, const unsigned char *address);
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/* Send retraction to all, and reset all interfaces statistics. */
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void babel_interface_close_all(void);
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extern int babel_enable_if_config_write (struct vty *);
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#endif
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