Commit a7f9becb authored by Antonio Quartulli's avatar Antonio Quartulli Committed by Marek Lindner
Browse files

batman-adv: request the full table if tt_crc doesn't match 



In case of tt_crc mismatching for a certain orig_node after applying the
changes, the node must request the full table immediately.

Signed-off-by: default avatarAntonio Quartulli <ordex@autistici.org>
Signed-off-by: default avatarMarek Lindner <lindner_marek@yahoo.de>
parent 980d55b2

net/batman-adv/routing.c

+12 −0
Original line number Diff line number Diff line
@@ -91,6 +91,18 @@ static void update_transtable(struct bat_priv *bat_priv, 
		 * to recompute it to spot any possible inconsistency

		 * in the global table */

		orig_node->tt_crc = tt_global_crc(bat_priv, orig_node);



		/* The ttvn alone is not enough to guarantee consistency

		 * because a single value could repesent different states

		 * (due to the wrap around). Thus a node has to check whether

		 * the resulting table (after applying the changes) is still

		 * consistent or not. E.g. a node could disconnect while its

		 * ttvn is X and reconnect on ttvn = X + TTVN_MAX: in this case

		 * checking the CRC value is mandatory to detect the

		 * inconsistency */

		if (orig_node->tt_crc != tt_crc)

			goto request_table;



		/* Roaming phase is over: tables are in sync again. I can

		 * unset the flag */

		orig_node->tt_poss_change = false;