static inline int llc_fixup_skb(struct sk_buff *skb)
{
u8 llc_len = 2;
- struct llc_pdu_sn *pdu;
+ struct llc_pdu_un *pdu;
- if (!pskb_may_pull(skb, sizeof(*pdu)))
+ if (unlikely(!pskb_may_pull(skb, sizeof(*pdu))))
return 0;
- pdu = (struct llc_pdu_sn *)skb->data;
+ pdu = (struct llc_pdu_un *)skb->data;
if ((pdu->ctrl_1 & LLC_PDU_TYPE_MASK) == LLC_PDU_TYPE_U)
llc_len = 1;
llc_len += 2;
+
+ if (unlikely(!pskb_may_pull(skb, llc_len)))
+ return 0;
+
skb->h.raw += llc_len;
skb_pull(skb, llc_len);
if (skb->protocol == htons(ETH_P_802_2)) {
*/
if (sap->rcv_func) {
sap->rcv_func(skb, dev, pt, orig_dev);
- goto out;
+ goto out_put;
}
dest = llc_pdu_type(skb);
if (unlikely(!dest || !llc_type_handlers[dest - 1]))
- goto drop;
+ goto drop_put;
llc_type_handlers[dest - 1](sap, skb);
+out_put:
+ llc_sap_put(sap);
out:
return 0;
drop:
kfree_skb(skb);
goto out;
+drop_put:
+ kfree_skb(skb);
+ goto out_put;
handle_station:
if (!llc_station_handler)
goto drop;