batman-adv: introduce capability initialization bitfield

The new bitfield allows us to keep track whether capability subsets of
an originator have gone through their initialization phase yet.

The translation table is the only user right now, but a new one will be
added soon.

Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>

1 files changed, 7 insertions, 5 deletions

diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index 4082d05a93a9..f641dfe302a4 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -1774,7 +1774,7 @@ void batadv_tt_global_del_orig(struct batadv_priv *bat_priv,
                 }
                 spin_unlock_bh(list_lock);
         }
-        orig_node->tt_initialised = false;
+        orig_node->capa_initialized &= ~BATADV_ORIG_CAPA_HAS_TT;
 }
 
 static bool batadv_tt_global_to_purge(struct batadv_tt_global_entry *tt_global,
@@ -2734,7 +2734,7 @@ static void _batadv_tt_update_changes(struct batadv_priv *bat_priv,
                                 return;
                 }
         }
-        orig_node->tt_initialised = true;
+        orig_node->capa_initialized |= BATADV_ORIG_CAPA_HAS_TT;
 }
 
 static void batadv_tt_fill_gtable(struct batadv_priv *bat_priv,
@@ -3224,13 +3224,15 @@ static void batadv_tt_update_orig(struct batadv_priv *bat_priv,
         uint8_t orig_ttvn = (uint8_t)atomic_read(&orig_node->last_ttvn);
         struct batadv_tvlv_tt_vlan_data *tt_vlan;
         bool full_table = true;
+        bool has_tt_init;
 
         tt_vlan = (struct batadv_tvlv_tt_vlan_data *)tt_buff;
+        has_tt_init = orig_node->capa_initialized & BATADV_ORIG_CAPA_HAS_TT;
+
         /* orig table not initialised AND first diff is in the OGM OR the ttvn
          * increased by one -> we can apply the attached changes
          */
-        if ((!orig_node->tt_initialised && ttvn == 1) ||
-            ttvn - orig_ttvn == 1) {
+        if ((!has_tt_init && ttvn == 1) || ttvn - orig_ttvn == 1) {
                 /* the OGM could not contain the changes due to their size or
                  * because they have already been sent BATADV_TT_OGM_APPEND_MAX
                  * times.
@@ -3270,7 +3272,7 @@ static void batadv_tt_update_orig(struct batadv_priv *bat_priv,
                 /* if we missed more than one change or our tables are not
                  * in sync anymore -> request fresh tt data
                  */
-                if (!orig_node->tt_initialised || ttvn != orig_ttvn ||
+                if (!has_tt_init || ttvn != orig_ttvn ||
                     !batadv_tt_global_check_crc(orig_node, tt_vlan,
                                                 tt_num_vlan)) {
 request_table: