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batman-adv: iv_ogm_aggregate_new, simplify error handling 

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 <mpa@pengutronix.de>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
This commit is contained in:
Markus Pargmann 2014-12-26 12:41:31 +01:00 committed by Antonio Quartulli
parent df905ceae3
commit 940d156f52
1 changed files with 13 additions and 15 deletions
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28
net/batman-adv/bat_iv_ogm.c
View File

@ -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);