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author | Marek Lindner <lindner_marek@yahoo.de> | 2013-04-23 21:39:59 +0800 |
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committer | Antonio Quartulli <antonio@meshcoding.com> | 2013-10-09 21:22:27 +0200 |
commit | 17cf0ea455f1a4a7e8436ef96236999e9c452a93 (patch) | |
tree | 86b0a10dc27b3c32f27c13f15bc3e43291cacca9 /net/batman-adv/distributed-arp-table.c | |
parent | 414254e342a0d58144de40c3da777521ebaeeb07 (diff) | |
download | op-kernel-dev-17cf0ea455f1a4a7e8436ef96236999e9c452a93.zip op-kernel-dev-17cf0ea455f1a4a7e8436ef96236999e9c452a93.tar.gz |
batman-adv: tvlv - add distributed arp table container
Create DAT container to announce DAT capabilities (if enabled).
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
Diffstat (limited to 'net/batman-adv/distributed-arp-table.c')
-rw-r--r-- | net/batman-adv/distributed-arp-table.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c index 06345d4..f07ec32 100644 --- a/net/batman-adv/distributed-arp-table.c +++ b/net/batman-adv/distributed-arp-table.c @@ -419,6 +419,10 @@ static bool batadv_is_orig_node_eligible(struct batadv_dat_candidate *res, bool ret = false; int j; + /* check if orig node candidate is running DAT */ + if (!(candidate->capabilities & BATADV_ORIG_CAPA_HAS_DAT)) + goto out; + /* Check if this node has already been selected... */ for (j = 0; j < select; j++) if (res[j].orig_node == candidate) @@ -626,6 +630,59 @@ out: } /** + * batadv_dat_tvlv_container_update - update the dat tvlv container after dat + * setting change + * @bat_priv: the bat priv with all the soft interface information + */ +static void batadv_dat_tvlv_container_update(struct batadv_priv *bat_priv) +{ + char dat_mode; + + dat_mode = atomic_read(&bat_priv->distributed_arp_table); + + switch (dat_mode) { + case 0: + batadv_tvlv_container_unregister(bat_priv, BATADV_TVLV_DAT, 1); + break; + case 1: + batadv_tvlv_container_register(bat_priv, BATADV_TVLV_DAT, 1, + NULL, 0); + break; + } +} + +/** + * batadv_dat_status_update - update the dat tvlv container after dat + * setting change + * @net_dev: the soft interface net device + */ +void batadv_dat_status_update(struct net_device *net_dev) +{ + struct batadv_priv *bat_priv = netdev_priv(net_dev); + batadv_dat_tvlv_container_update(bat_priv); +} + +/** + * batadv_gw_tvlv_ogm_handler_v1 - process incoming dat tvlv container + * @bat_priv: the bat priv with all the soft interface information + * @orig: the orig_node of the ogm + * @flags: flags indicating the tvlv state (see batadv_tvlv_handler_flags) + * @tvlv_value: tvlv buffer containing the gateway data + * @tvlv_value_len: tvlv buffer length + */ +static void batadv_dat_tvlv_ogm_handler_v1(struct batadv_priv *bat_priv, + struct batadv_orig_node *orig, + uint8_t flags, + void *tvlv_value, + uint16_t tvlv_value_len) +{ + if (flags & BATADV_TVLV_HANDLER_OGM_CIFNOTFND) + orig->capabilities &= ~BATADV_ORIG_CAPA_HAS_DAT; + else + orig->capabilities |= BATADV_ORIG_CAPA_HAS_DAT; +} + +/** * batadv_dat_hash_free - free the local DAT hash table * @bat_priv: the bat priv with all the soft interface information */ @@ -657,6 +714,10 @@ int batadv_dat_init(struct batadv_priv *bat_priv) batadv_dat_start_timer(bat_priv); + batadv_tvlv_handler_register(bat_priv, batadv_dat_tvlv_ogm_handler_v1, + NULL, BATADV_TVLV_DAT, 1, + BATADV_TVLV_HANDLER_OGM_CIFNOTFND); + batadv_dat_tvlv_container_update(bat_priv); return 0; } @@ -666,6 +727,9 @@ int batadv_dat_init(struct batadv_priv *bat_priv) */ void batadv_dat_free(struct batadv_priv *bat_priv) { + batadv_tvlv_container_unregister(bat_priv, BATADV_TVLV_DAT, 1); + batadv_tvlv_handler_unregister(bat_priv, BATADV_TVLV_DAT, 1); + cancel_delayed_work_sync(&bat_priv->dat.work); batadv_dat_hash_free(bat_priv); |