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authorremi.denis-courmont@nokia <remi.denis-courmont@nokia>2009-01-23 03:00:26 +0000
committerDavid S. Miller <davem@davemloft.net>2009-01-26 21:03:33 -0800
commit4b8f704bea70a2c8719e47f53197678a87a0c62f (patch)
tree6659847b7a045e0f5f26f83939f9c56093204713 /net/phonet
parent5075138d67ac66adab777163907d92d1a955ff50 (diff)
downloadop-kernel-dev-4b8f704bea70a2c8719e47f53197678a87a0c62f.zip
op-kernel-dev-4b8f704bea70a2c8719e47f53197678a87a0c62f.tar.gz
Phonet: check destination before delivering packets locally
Signed-off-by: RĂ©mi 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.c20
1 files changed, 9 insertions, 11 deletions
diff --git a/net/phonet/af_phonet.c b/net/phonet/af_phonet.c
index 13cb323..c7c39d9 100644
--- a/net/phonet/af_phonet.c
+++ b/net/phonet/af_phonet.c
@@ -275,8 +275,6 @@ static inline int can_respond(struct sk_buff *skb)
return 0;
ph = pn_hdr(skb);
- if (phonet_address_get(skb->dev, ph->pn_rdev) != ph->pn_rdev)
- return 0; /* we are not the destination */
if (ph->pn_res == PN_PREFIX && !pskb_may_pull(skb, 5))
return 0;
if (ph->pn_res == PN_COMMGR) /* indications */
@@ -344,8 +342,8 @@ static int phonet_rcv(struct sk_buff *skb, struct net_device *dev,
struct packet_type *pkttype,
struct net_device *orig_dev)
{
+ struct net *net = dev_net(dev);
struct phonethdr *ph;
- struct sock *sk;
struct sockaddr_pn sa;
u16 len;
@@ -364,21 +362,21 @@ static int phonet_rcv(struct sk_buff *skb, struct net_device *dev,
skb_reset_transport_header(skb);
pn_skb_get_dst_sockaddr(skb, &sa);
- if (pn_sockaddr_get_addr(&sa) == 0)
- goto out; /* currently, we cannot be device 0 */
- sk = pn_find_sock_by_sa(dev_net(dev), &sa);
- if (sk == NULL) {
+ /* check if we are the destination */
+ if (phonet_address_lookup(net, pn_sockaddr_get_addr(&sa)) == 0) {
+ /* Phonet packet input */
+ struct sock *sk = pn_find_sock_by_sa(net, &sa);
+
+ if (sk)
+ return sk_receive_skb(sk, skb, 0);
+
if (can_respond(skb)) {
send_obj_unreachable(skb);
send_reset_indications(skb);
}
- goto out;
}
- /* Push data to the socket (or other sockets connected to it). */
- return sk_receive_skb(sk, skb, 0);
-
out:
kfree_skb(skb);
return NET_RX_DROP;
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