Commit dc58fe32 authored by Antonio Quartulli's avatar Antonio Quartulli Committed by Sven Eckelmann

batman-adv: linearise the tt_response skb only if needed

The TT_RESPONSE skb has to be linearised only if the node plans to access the
packet payload (so only if the message is directed to that node). In all the
other cases the node can avoid this memory operation
Signed-off-by: default avatarAntonio Quartulli <ordex@autistici.org>
Signed-off-by: default avatarSven Eckelmann <sven@narfation.org>
parent d099c2c5
...@@ -616,13 +616,14 @@ int recv_tt_query(struct sk_buff *skb, struct hard_iface *recv_if) ...@@ -616,13 +616,14 @@ int recv_tt_query(struct sk_buff *skb, struct hard_iface *recv_if)
} }
break; break;
case TT_RESPONSE: case TT_RESPONSE:
/* packet needs to be linearized to access the TT changes */ if (is_my_mac(tt_query->dst)) {
if (skb_linearize(skb) < 0) /* packet needs to be linearized to access the TT
goto out; * changes */
if (skb_linearize(skb) < 0)
goto out;
if (is_my_mac(tt_query->dst))
handle_tt_response(bat_priv, tt_query); handle_tt_response(bat_priv, tt_query);
else { } else {
bat_dbg(DBG_TT, bat_priv, bat_dbg(DBG_TT, bat_priv,
"Routing TT_RESPONSE to %pM [%c]\n", "Routing TT_RESPONSE to %pM [%c]\n",
tt_query->dst, tt_query->dst,
......
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