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atm: [br2864] fix routed vcmux support

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From: Eric Kinzie <ekinzie@cmf.nrl.navy.mil>
Signed-off-by: Chas Williams <chas@cmf.nrl.navy.mil>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Kinzie 2008-06-16 17:18:18 -07:00 committed by David S. Miller
parent 059e3779b5
commit 7e903c2ae3
1 changed files with 44 additions and 32 deletions
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76
net/atm/br2684.c
View file

@ -188,10 +188,13 @@ static int br2684_xmit_vcc(struct sk_buff *skb, struct br2684_dev *brdev,
return 0;
}
}
} else {
skb_push(skb, 2);
if (brdev->payload == p_bridged)
} else { /* e_vc */
if (brdev->payload == p_bridged) {
skb_push(skb, 2);
memset(skb->data, 0, 2);
} else { /* p_routed */
skb_pull(skb, ETH_HLEN);
}
}
skb_debug(skb);
@ -377,11 +380,8 @@ static void br2684_push(struct atm_vcc *atmvcc, struct sk_buff *skb)
(skb->data + 6, ethertype_ipv4,
sizeof(ethertype_ipv4)) == 0)
skb->protocol = __constant_htons(ETH_P_IP);
else {
brdev->stats.rx_errors++;
dev_kfree_skb(skb);
return;
}
else
goto error;
skb_pull(skb, sizeof(llc_oui_ipv4));
skb_reset_network_header(skb);
skb->pkt_type = PACKET_HOST;
@ -394,44 +394,56 @@ static void br2684_push(struct atm_vcc *atmvcc, struct sk_buff *skb)
(memcmp(skb->data, llc_oui_pid_pad, 7) == 0)) {
skb_pull(skb, sizeof(llc_oui_pid_pad));
skb->protocol = eth_type_trans(skb, net_dev);
} else {
brdev->stats.rx_errors++;
dev_kfree_skb(skb);
return;
}
} else
goto error;
} else {
/* first 2 chars should be 0 */
if (*((u16 *) (skb->data)) != 0) {
brdev->stats.rx_errors++;
dev_kfree_skb(skb);
return;
} else { /* e_vc */
if (brdev->payload == p_routed) {
struct iphdr *iph;
skb_reset_network_header(skb);
iph = ip_hdr(skb);
if (iph->version == 4)
skb->protocol = __constant_htons(ETH_P_IP);
else if (iph->version == 6)
skb->protocol = __constant_htons(ETH_P_IPV6);
else
goto error;
skb->pkt_type = PACKET_HOST;
} else { /* p_bridged */
/* first 2 chars should be 0 */
if (*((u16 *) (skb->data)) != 0)
goto error;
skb_pull(skb, BR2684_PAD_LEN);
skb->protocol = eth_type_trans(skb, net_dev);
}
skb_pull(skb, BR2684_PAD_LEN + ETH_HLEN); /* pad, dstmac, srcmac, ethtype */
skb->protocol = eth_type_trans(skb, net_dev);
}
#ifdef CONFIG_ATM_BR2684_IPFILTER
if (unlikely(packet_fails_filter(skb->protocol, brvcc, skb))) {
brdev->stats.rx_dropped++;
dev_kfree_skb(skb);
return;
}
if (unlikely(packet_fails_filter(skb->protocol, brvcc, skb)))
goto dropped;
#endif /* CONFIG_ATM_BR2684_IPFILTER */
skb->dev = net_dev;
ATM_SKB(skb)->vcc = atmvcc; /* needed ? */
pr_debug("received packet's protocol: %x\n", ntohs(skb->protocol));
skb_debug(skb);
if (unlikely(!(net_dev->flags & IFF_UP))) {
/* sigh, interface is down */
brdev->stats.rx_dropped++;
dev_kfree_skb(skb);
return;
}
/* sigh, interface is down? */
if (unlikely(!(net_dev->flags & IFF_UP)))
goto dropped;
brdev->stats.rx_packets++;
brdev->stats.rx_bytes += skb->len;
memset(ATM_SKB(skb), 0, sizeof(struct atm_skb_data));
netif_rx(skb);
return;
dropped:
brdev->stats.rx_dropped++;
goto free_skb;
error:
brdev->stats.rx_errors++;
free_skb:
dev_kfree_skb(skb);
return;
}
/*