Subject: [PATCH 01/12] batman-adv: iv_ogm_aggregate_new, simplify error handling

From: Antonio Quartulli <[email-masked]>
Date: Wed, 3 Jun 2015 16:13:57 +0200

From: Markus Pargmann <[email-masked]>

It is just a bit easier to put the error handling at one place and let
multiple error paths use the same calls.

Signed-off-by: Markus Pargmann <[email-masked]>
Signed-off-by: Marek Lindner <[email-masked]>
Signed-off-by: Antonio Quartulli <[email-masked]>
---
 net/batman-adv/bat_iv_ogm.c | 28 +++++++++++++---------------
 1 file changed, 13 insertions(+), 15 deletions(-)

diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index c5ba7a7..190a642 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -642,19 +642,16 @@ static void batadv_iv_ogm_aggregate_new(const unsigned char *packet_buff,
 		if (!batadv_atomic_dec_not_zero(&bat_priv->batman_queue_left)) {
 			batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
 				   "batman packet queue full\n");
-			goto out;
+			goto out_free_outgoing;
 		}
 	}
 
 	forw_packet_aggr = kmalloc(sizeof(*forw_packet_aggr), GFP_ATOMIC);
-	if (!forw_packet_aggr) {
-		if (!own_packet)
-			atomic_inc(&bat_priv->batman_queue_left);
-		goto out;
-	}
+	if (!forw_packet_aggr)
+		goto out_nomem;
 
-	if ((atomic_read(&bat_priv->aggregated_ogms)) &&
-	    (packet_len < BATADV_MAX_AGGREGATION_BYTES))
+	if (atomic_read(&bat_priv->aggregated_ogms) &&
+	    packet_len < BATADV_MAX_AGGREGATION_BYTES)
 		skb_size = BATADV_MAX_AGGREGATION_BYTES;
 	else
 		skb_size = packet_len;
@@ -662,12 +659,8 @@ static void batadv_iv_ogm_aggregate_new(const unsigned char *packet_buff,
 	skb_size += ETH_HLEN;
 
 	forw_packet_aggr->skb = netdev_alloc_skb_ip_align(NULL, skb_size);
-	if (!forw_packet_aggr->skb) {
-		if (!own_packet)
-			atomic_inc(&bat_priv->batman_queue_left);
-		kfree(forw_packet_aggr);
-		goto out;
-	}
+	if (!forw_packet_aggr->skb)
+		goto out_free_forw_packet;
 	forw_packet_aggr->skb->priority = TC_PRIO_CONTROL;
 	skb_reserve(forw_packet_aggr->skb, ETH_HLEN);
 
@@ -699,7 +692,12 @@ static void batadv_iv_ogm_aggregate_new(const unsigned char *packet_buff,
 			   send_time - jiffies);
 
 	return;
-out:
+out_free_forw_packet:
+	kfree(forw_packet_aggr);
+out_nomem:
+	if (!own_packet)
+		atomic_inc(&bat_priv->batman_queue_left);
+out_free_outgoing:
 	batadv_hardif_free_ref(if_outgoing);
 out_free_incoming:
 	batadv_hardif_free_ref(if_incoming);
-- 
2.4.2