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| author | remi.denis-courmont@nokia <remi.denis-courmont@nokia> | 2009-01-23 03:00:26 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-01-26 21:03:33 -0800 |
| commit | 4b8f704bea70a2c8719e47f53197678a87a0c62f (patch) | |
| tree | 6659847b7a045e0f5f26f83939f9c56093204713 /net/phonet | |
| parent | 5075138d67ac66adab777163907d92d1a955ff50 (diff) | |
| download | linux-4b8f704bea70a2c8719e47f53197678a87a0c62f.tar.gz linux-4b8f704bea70a2c8719e47f53197678a87a0c62f.tar.bz2 linux-4b8f704bea70a2c8719e47f53197678a87a0c62f.zip | |
Phonet: check destination before delivering packets locally
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.c | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/net/phonet/af_phonet.c b/net/phonet/af_phonet.c index 13cb323f8c38..c7c39d92ee5e 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; |