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batman-adv: use check_unicast_packet() in recv_roam_adv()

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To avoid code duplication and to simplify further changes,
check_unicast_packet() is now used in recv_roam_adv() to check for not
well formed packets and so discard them.

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
This commit is contained in:
Antonio Quartulli 2012-07-31 17:19:15 +02:00
parent a932657f51
commit d48ddb8366
1 changed files with 1 additions and 14 deletions
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15
net/batman-adv/routing.c
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@ -687,21 +687,8 @@ int batadv_recv_roam_adv(struct sk_buff *skb, struct batadv_hard_iface *recv_if)
struct batadv_priv *bat_priv = netdev_priv(recv_if->soft_iface);
struct batadv_roam_adv_packet *roam_adv_packet;
struct batadv_orig_node *orig_node;
struct ethhdr *ethhdr;
/* drop packet if it has not necessary minimum size */
if (unlikely(!pskb_may_pull(skb,
sizeof(struct batadv_roam_adv_packet))))
goto out;
ethhdr = (struct ethhdr *)skb_mac_header(skb);
/* packet with unicast indication but broadcast recipient */
if (is_broadcast_ether_addr(ethhdr->h_dest))
goto out;
/* packet with broadcast sender address */
if (is_broadcast_ether_addr(ethhdr->h_source))
if (batadv_check_unicast_packet(skb, sizeof(*roam_adv_packet)) < 0)
goto out;
batadv_inc_counter(bat_priv, BATADV_CNT_TT_ROAM_ADV_RX);