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authorRémi Denis-Courmont <remi.denis-courmont@nokia.com>2009-10-14 00:48:31 +0000
committerDavid S. Miller <davem@davemloft.net>2009-10-14 15:04:18 -0700
commit86a0a1e52d0918125ffc21475537a032f9a71d7c (patch)
tree3399525f28536c68781c91e1e702111e7cc2dd6d /net/phonet
parentaa6c45f32f7db292f8f6a76d7b39c19007d6a456 (diff)
Phonet: forward incoming packets
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/phonet')
-rw-r--r--net/phonet/af_phonet.c32
1 files changed, 32 insertions, 0 deletions
diff --git a/net/phonet/af_phonet.c b/net/phonet/af_phonet.c
index cc2eef169a8b..66737aa995ea 100644
--- a/net/phonet/af_phonet.c
+++ b/net/phonet/af_phonet.c
@@ -394,6 +394,38 @@ static int phonet_rcv(struct sk_buff *skb, struct net_device *dev,
send_obj_unreachable(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:

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