kpriv/linux-hardened
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Phonet: forward incoming packets

Browse source 
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Rémi Denis-Courmont 2009-10-14 00:48:31 +00:00 committed by David S. Miller
parent aa6c45f32f
commit 86a0a1e52d
1 changed files with 32 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

32
net/phonet/af_phonet.c
View file

@ -394,6 +394,38 @@ static int phonet_rcv(struct sk_buff *skb, struct net_device *dev,
send_obj_unreachable(skb); send_obj_unreachable(skb);
send_reset_indications(skb); send_reset_indications(skb);
} }
} else if (unlikely(skb->pkt_type == PACKET_LOOPBACK))
goto out; /* Race between address deletion and loopback */
else {
/* Phonet packet routing */
struct net_device *out_dev;
out_dev = phonet_route_output(net, pn_sockaddr_get_addr(&sa));
if (!out_dev) {
LIMIT_NETDEBUG(KERN_WARNING"No Phonet route to %02X\n",
pn_sockaddr_get_addr(&sa));
goto out;
}
__skb_push(skb, sizeof(struct phonethdr));
skb->dev = out_dev;
if (out_dev == dev) {
LIMIT_NETDEBUG(KERN_ERR"Phonet loop to %02X on %s\n",
pn_sockaddr_get_addr(&sa), dev->name);
goto out_dev;
}
/* Some drivers (e.g. TUN) do not allocate HW header space */
if (skb_cow_head(skb, out_dev->hard_header_len))
goto out_dev;
if (dev_hard_header(skb, out_dev, ETH_P_PHONET, NULL, NULL,
skb->len) < 0)
goto out_dev;
dev_queue_xmit(skb);
dev_put(out_dev);
return NET_RX_SUCCESS;
out_dev:
dev_put(out_dev);
} }
out: out: