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firewire net: Accept IPv4 and ARP only.

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Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
YOSHIFUJI Hideaki / 吉藤英明 2013-03-25 08:25:38 +00:00 committed by David S. Miller
parent b8092861ef
commit 18406d7e42
1 changed files with 19 additions and 2 deletions
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21
drivers/firewire/net.c
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@ -517,6 +517,14 @@ static int fwnet_finish_incoming_packet(struct net_device *net,
int status;
__be64 guid;
switch (ether_type) {
case ETH_P_ARP:
case ETH_P_IP:
break;
default:
goto err;
}
dev = netdev_priv(net);
/* Write metadata, and then pass to the receive level */
skb->dev = net;
@ -653,6 +661,7 @@ static int fwnet_finish_incoming_packet(struct net_device *net,
return 0;
no_peer:
err:
net->stats.rx_errors++;
net->stats.rx_dropped++;
@ -1340,9 +1349,17 @@ static netdev_tx_t fwnet_tx(struct sk_buff *skb, struct net_device *net)
* We might need to rebuild the header on tx failure.
*/
memcpy(&hdr_buf, skb->data, sizeof(hdr_buf));
skb_pull(skb, sizeof(hdr_buf));
proto = hdr_buf.h_proto;
switch (proto) {
case htons(ETH_P_ARP):
case htons(ETH_P_IP):
break;
default:
goto fail;
}
skb_pull(skb, sizeof(hdr_buf));
dg_size = skb->len;
/*