diff options
Diffstat (limited to 'net/atm/lec.c')
| -rw-r--r-- | net/atm/lec.c | 37 |
1 files changed, 34 insertions, 3 deletions
diff --git a/net/atm/lec.c b/net/atm/lec.c index a0752487026..47e1eae9746 100644 --- a/net/atm/lec.c +++ b/net/atm/lec.c @@ -686,9 +686,19 @@ static unsigned char lec_ctrl_magic[] = { 0x01, 0x01 }; +#define LEC_DATA_DIRECT_8023 2 +#define LEC_DATA_DIRECT_8025 3 + +static int lec_is_data_direct(struct atm_vcc *vcc) +{ + return ((vcc->sap.blli[0].l3.tr9577.snap[4] == LEC_DATA_DIRECT_8023) || + (vcc->sap.blli[0].l3.tr9577.snap[4] == LEC_DATA_DIRECT_8025)); +} + static void lec_push(struct atm_vcc *vcc, struct sk_buff *skb) { + unsigned long flags; struct net_device *dev = (struct net_device *)vcc->proto_data; struct lec_priv *priv = (struct lec_priv *)dev->priv; @@ -728,7 +738,8 @@ lec_push(struct atm_vcc *vcc, struct sk_buff *skb) skb_queue_tail(&sk->sk_receive_queue, skb); sk->sk_data_ready(sk, skb->len); } else { /* Data frame, queue to protocol handlers */ - unsigned char *dst; + struct lec_arp_table *entry; + unsigned char *src, *dst; atm_return(vcc,skb->truesize); if (*(uint16_t *)skb->data == htons(priv->lecid) || @@ -741,10 +752,30 @@ lec_push(struct atm_vcc *vcc, struct sk_buff *skb) return; } #ifdef CONFIG_TR - if (priv->is_trdev) dst = ((struct lecdatahdr_8025 *)skb->data)->h_dest; + if (priv->is_trdev) + dst = ((struct lecdatahdr_8025 *) skb->data)->h_dest; else #endif - dst = ((struct lecdatahdr_8023 *)skb->data)->h_dest; + dst = ((struct lecdatahdr_8023 *) skb->data)->h_dest; + + /* If this is a Data Direct VCC, and the VCC does not match + * the LE_ARP cache entry, delete the LE_ARP cache entry. + */ + spin_lock_irqsave(&priv->lec_arp_lock, flags); + if (lec_is_data_direct(vcc)) { +#ifdef CONFIG_TR + if (priv->is_trdev) + src = ((struct lecdatahdr_8025 *) skb->data)->h_source; + else +#endif + src = ((struct lecdatahdr_8023 *) skb->data)->h_source; + entry = lec_arp_find(priv, src); + if (entry && entry->vcc != vcc) { + lec_arp_remove(priv, entry); + kfree(entry); + } + } + spin_unlock_irqrestore(&priv->lec_arp_lock, flags); if (!(dst[0]&0x01) && /* Never filter Multi/Broadcast */ !priv->is_proxy && /* Proxy wants all the packets */ |