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authorMarkus Pargmann <mpa@pengutronix.de>2014-12-26 12:41:29 +0100
committerAntonio Quartulli <antonio@meshcoding.com>2015-05-29 10:13:37 +0200
commit8f34b388786a952382c829453f280384f1bf3886 (patch)
treef831bd2e625735e24a64b786e06aa5159cf69b39 /net/batman-adv/bat_iv_ogm.c
parentfc1f86936651191ca51e532083206efb351ccd9c (diff)
batman-adv: iv_ogm_can_aggregate, code readability
This patch tries to increase code readability by negating the first if block and rearranging some of the other conditional blocks. This way we save an indentation level, we also save some allocation that is not necessary for one of the conditions. Signed-off-by: Markus Pargmann <mpa@pengutronix.de> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Diffstat (limited to 'net/batman-adv/bat_iv_ogm.c')
-rw-r--r--net/batman-adv/bat_iv_ogm.c102
1 files changed, 53 insertions, 49 deletions
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index f9c561094942..ce04cd75fae4 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -544,58 +544,62 @@ batadv_iv_ogm_can_aggregate(const struct batadv_ogm_packet *new_bat_ogm_packet,
* - the send time is within our MAX_AGGREGATION_MS time
* - the resulting packet wont be bigger than
* MAX_AGGREGATION_BYTES
+ * otherwise aggregation is not possible
*/
- if (time_before(send_time, forw_packet->send_time) &&
- time_after_eq(aggregation_end_time, forw_packet->send_time) &&
- (aggregated_bytes <= BATADV_MAX_AGGREGATION_BYTES)) {
- /* check aggregation compatibility
- * -> direct link packets are broadcasted on
- * their interface only
- * -> aggregate packet if the current packet is
- * a "global" packet as well as the base
- * packet
- */
- primary_if = batadv_primary_if_get_selected(bat_priv);
- if (!primary_if)
- goto out;
-
- /* packet is not leaving on the same interface. */
- if (forw_packet->if_outgoing != if_outgoing)
- goto out;
+ if (!time_before(send_time, forw_packet->send_time) ||
+ !time_after_eq(aggregation_end_time, forw_packet->send_time))
+ return false;
+
+ if (aggregated_bytes > BATADV_MAX_AGGREGATION_BYTES)
+ return false;
+
+ /* packet is not leaving on the same interface. */
+ if (forw_packet->if_outgoing != if_outgoing)
+ return false;
+
+ /* check aggregation compatibility
+ * -> direct link packets are broadcasted on
+ * their interface only
+ * -> aggregate packet if the current packet is
+ * a "global" packet as well as the base
+ * packet
+ */
+ primary_if = batadv_primary_if_get_selected(bat_priv);
+ if (!primary_if)
+ return false;
- /* packets without direct link flag and high TTL
- * are flooded through the net
- */
- if ((!directlink) &&
- (!(batadv_ogm_packet->flags & BATADV_DIRECTLINK)) &&
- (batadv_ogm_packet->ttl != 1) &&
-
- /* own packets originating non-primary
- * interfaces leave only that interface
- */
- ((!forw_packet->own) ||
- (forw_packet->if_incoming == primary_if))) {
- res = true;
- goto out;
- }
+ /* packets without direct link flag and high TTL
+ * are flooded through the net
+ */
+ if (!directlink &&
+ !(batadv_ogm_packet->flags & BATADV_DIRECTLINK) &&
+ batadv_ogm_packet->ttl != 1 &&
+
+ /* own packets originating non-primary
+ * interfaces leave only that interface
+ */
+ (!forw_packet->own ||
+ forw_packet->if_incoming == primary_if)) {
+ res = true;
+ goto out;
+ }
- /* if the incoming packet is sent via this one
- * interface only - we still can aggregate
- */
- if ((directlink) &&
- (new_bat_ogm_packet->ttl == 1) &&
- (forw_packet->if_incoming == if_incoming) &&
-
- /* packets from direct neighbors or
- * own secondary interface packets
- * (= secondary interface packets in general)
- */
- (batadv_ogm_packet->flags & BATADV_DIRECTLINK ||
- (forw_packet->own &&
- forw_packet->if_incoming != primary_if))) {
- res = true;
- goto out;
- }
+ /* if the incoming packet is sent via this one
+ * interface only - we still can aggregate
+ */
+ if (directlink &&
+ new_bat_ogm_packet->ttl == 1 &&
+ forw_packet->if_incoming == if_incoming &&
+
+ /* packets from direct neighbors or
+ * own secondary interface packets
+ * (= secondary interface packets in general)
+ */
+ (batadv_ogm_packet->flags & BATADV_DIRECTLINK ||
+ (forw_packet->own &&
+ forw_packet->if_incoming != primary_if))) {
+ res = true;
+ goto out;
}
out: