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Diffstat (limited to '')
| -rw-r--r-- | babeld/babel_interface.h | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/babeld/babel_interface.h b/babeld/babel_interface.h new file mode 100644 index 0000000..9833827 --- /dev/null +++ b/babeld/babel_interface.h @@ -0,0 +1,138 @@ +/* +Copyright 2011 by Matthieu Boutier and Juliusz Chroboczek + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. +*/ + +#ifndef BABEL_INTERFACE_H +#define BABEL_INTERFACE_H + +#include <zebra.h> +#include "zclient.h" +#include "vty.h" +#include "distribute.h" + +#define CONFIG_DEFAULT 0 +#define CONFIG_NO 1 +#define CONFIG_YES 2 + +/* babeld interface information */ +struct babel_interface { + unsigned short flags; /* see below */ + unsigned short cost; + int channel; + struct timeval hello_timeout; + struct timeval update_timeout; + struct timeval flush_timeout; + struct timeval update_flush_timeout; + unsigned char *ipv4; + int buffered; + int bufsize; + /* Relative position of the Hello message in the send buffer, or + (-1) if there is none. */ + int buffered_hello; + char have_buffered_id; + char have_buffered_nh; + char have_buffered_prefix; + unsigned char buffered_id[8]; + unsigned char buffered_nh[4]; + unsigned char buffered_prefix[16]; + unsigned char *sendbuf; + struct buffered_update *buffered_updates; + int num_buffered_updates; + int update_bufsize; + time_t bucket_time; + unsigned int bucket; + time_t last_update_time; + unsigned short hello_seqno; + unsigned hello_interval; + unsigned update_interval; + /* A higher value means we forget old RTT samples faster. Must be + between 1 and 256, inclusive. */ + unsigned int rtt_decay; + /* Parameters for computing the cost associated to RTT. */ + unsigned int rtt_min; + unsigned int rtt_max; + unsigned int max_rtt_penalty; + + /* For filter type slot. */ + struct access_list *list[DISTRIBUTE_MAX]; /* Access-list. */ + struct prefix_list *prefix[DISTRIBUTE_MAX]; /* Prefix-list. */ +}; + +typedef struct babel_interface babel_interface_nfo; +static inline babel_interface_nfo* babel_get_if_nfo(struct interface *ifp) +{ + return ((babel_interface_nfo*) ifp->info); +} + +/* babel_interface_nfo flags */ +#define BABEL_IF_IS_UP (1 << 0) +#define BABEL_IF_WIRED (1 << 1) +#define BABEL_IF_SPLIT_HORIZON (1 << 2) +#define BABEL_IF_LQ (1 << 3) +#define BABEL_IF_FARAWAY (1 << 4) +#define BABEL_IF_TIMESTAMPS (1 << 5) + +/* Only INTERFERING can appear on the wire. */ +#define BABEL_IF_CHANNEL_UNKNOWN 0 +#define BABEL_IF_CHANNEL_INTERFERING 255 +#define BABEL_IF_CHANNEL_NONINTERFERING -2 + +static inline int +if_up(struct interface *ifp) +{ + return (if_is_operative(ifp) && + ifp->connected != NULL && + (babel_get_if_nfo(ifp)->flags & BABEL_IF_IS_UP)); +} + +struct buffered_update { + unsigned char id[8]; + unsigned char prefix[16]; + unsigned char plen; + unsigned char pad[3]; +}; + +/* init function */ +void babel_if_init(void); + +/* Callback functions for zebra client */ +int babel_interface_up (int, struct zclient *, zebra_size_t, vrf_id_t); +int babel_interface_down (int, struct zclient *, zebra_size_t, vrf_id_t); +int babel_interface_add (int, struct zclient *, zebra_size_t, vrf_id_t); +int babel_interface_delete (int, struct zclient *, zebra_size_t, vrf_id_t); +int babel_interface_address_add (int, struct zclient *, zebra_size_t, vrf_id_t); +int babel_interface_address_delete (int, struct zclient *, zebra_size_t, vrf_id_t); + +int babel_ifp_create(struct interface *ifp); +int babel_ifp_up(struct interface *ifp); +int babel_ifp_down(struct interface *ifp); +int babel_ifp_destroy(struct interface *ifp); + +unsigned jitter(babel_interface_nfo *, int); +unsigned update_jitter(babel_interface_nfo *babel_ifp, int urgent); +/* return "true" if "address" is one of our ipv6 addresses */ +int is_interface_ll_address(struct interface *ifp, const unsigned char *address); +/* Send retraction to all, and reset all interfaces statistics. */ +void babel_interface_close_all(void); +extern int babel_enable_if_config_write (struct vty *); + + +#endif |