diff options
| -rw-r--r-- | net/batman-adv/bat_iv_ogm.c | 18 | ||||
| -rw-r--r-- | net/batman-adv/main.c | 3 | ||||
| -rw-r--r-- | net/batman-adv/main.h | 6 | ||||
| -rw-r--r-- | net/batman-adv/types.h | 4 |
4 files changed, 30 insertions, 1 deletions
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index b288d90855d1..4376fe75eeec 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -1494,6 +1494,23 @@ static int batadv_iv_ogm_neigh_cmp(struct batadv_neigh_node *neigh1, return tq1 - tq2; } +/** + * batadv_iv_ogm_neigh_is_eob - check if neigh1 is equally good or better than + * neigh2 from the metric prospective + * @neigh1: the first neighbor object of the comparison + * @neigh2: the second neighbor object of the comparison + * + * Returns true if the metric via neigh1 is equally good or better than the + * metric via neigh2, false otherwise. + */ +static bool batadv_iv_ogm_neigh_is_eob(struct batadv_neigh_node *neigh1, + struct batadv_neigh_node *neigh2) +{ + int diff = batadv_iv_ogm_neigh_cmp(neigh1, neigh2); + + return diff > -BATADV_TQ_SIMILARITY_THRESHOLD; +} + static struct batadv_algo_ops batadv_batman_iv __read_mostly = { .name = "BATMAN_IV", .bat_iface_enable = batadv_iv_ogm_iface_enable, @@ -1503,6 +1520,7 @@ static struct batadv_algo_ops batadv_batman_iv __read_mostly = { .bat_ogm_schedule = batadv_iv_ogm_schedule, .bat_ogm_emit = batadv_iv_ogm_emit, .bat_neigh_cmp = batadv_iv_ogm_neigh_cmp, + .bat_neigh_is_equiv_or_better = batadv_iv_ogm_neigh_is_eob, .bat_orig_print = batadv_iv_ogm_orig_print, }; diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c index 1f2f1ac67a4c..c51a5e568f0a 100644 --- a/net/batman-adv/main.c +++ b/net/batman-adv/main.c @@ -502,7 +502,8 @@ int batadv_algo_register(struct batadv_algo_ops *bat_algo_ops) !bat_algo_ops->bat_primary_iface_set || !bat_algo_ops->bat_ogm_schedule || !bat_algo_ops->bat_ogm_emit || - !bat_algo_ops->bat_neigh_cmp) { + !bat_algo_ops->bat_neigh_cmp || + !bat_algo_ops->bat_neigh_is_equiv_or_better) { pr_info("Routing algo '%s' does not implement required ops\n", bat_algo_ops->name); ret = -EINVAL; diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h index d7dfafe45f29..773301a7923f 100644 --- a/net/batman-adv/main.h +++ b/net/batman-adv/main.h @@ -86,6 +86,12 @@ /* numbers of originator to contact for any PUT/GET DHT operation */ #define BATADV_DAT_CANDIDATES_NUM 3 +/** + * BATADV_TQ_SIMILARITY_THRESHOLD - TQ points that a secondary metric can differ + * at most from the primary one in order to be still considered acceptable + */ +#define BATADV_TQ_SIMILARITY_THRESHOLD 50 + /* how much worse secondary interfaces may be to be considered as bonding * candidates */ diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h index 7a00932a55bd..d0e64d269da4 100644 --- a/net/batman-adv/types.h +++ b/net/batman-adv/types.h @@ -993,6 +993,8 @@ struct batadv_forw_packet { * @bat_ogm_schedule: prepare a new outgoing OGM for the send queue * @bat_ogm_emit: send scheduled OGM * @bat_neigh_cmp: compare the metrics of two neighbors + * @bat_neigh_is_equiv_or_better: check if neigh1 is equally good or + * better than neigh2 from the metric prospective * @bat_orig_print: print the originator table (optional) */ struct batadv_algo_ops { @@ -1006,6 +1008,8 @@ struct batadv_algo_ops { void (*bat_ogm_emit)(struct batadv_forw_packet *forw_packet); int (*bat_neigh_cmp)(struct batadv_neigh_node *neigh1, struct batadv_neigh_node *neigh2); + bool (*bat_neigh_is_equiv_or_better)(struct batadv_neigh_node *neigh1, + struct batadv_neigh_node *neigh2); /* orig_node handling API */ void (*bat_orig_print)(struct batadv_priv *priv, struct seq_file *seq); }; |