From: YOSHIFUJI Hideaki / 吉藤英明 Date: Mon, 25 Mar 2013 08:25:38 +0000 (+0000) Subject: firewire net: Accept IPv4 and ARP only. X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=18406d7e42a67d7b3a3b3ed17be6626a51d8c715;p=linux-beck.git firewire net: Accept IPv4 and ARP only. Signed-off-by: YOSHIFUJI Hideaki Signed-off-by: David S. Miller --- diff --git a/drivers/firewire/net.c b/drivers/firewire/net.c index c1898adeb900..d438c5be8c21 100644 --- a/drivers/firewire/net.c +++ b/drivers/firewire/net.c @@ -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; /*