netdev - [PATCH] Phonet: look up the resource routing table when forwarding

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Message-Id: <1284589815-28302-3-git-send-email-remi@remlab.net>
Date:	Thu, 16 Sep 2010 01:30:13 +0300
From:	Rémi Denis-Courmont <remi@...lab.net>
To:	netdev@...r.kernel.org
Cc:	Rémi Denis-Courmont 
	<remi.denis-courmont@...ia.com>
Subject: [PATCH] Phonet: look up the resource routing table when forwarding

From: Rémi Denis-Courmont <remi.denis-courmont@...ia.com>

Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@...ia.com>
---
 net/phonet/af_phonet.c |   17 +++++++++++++++++
 1 files changed, 17 insertions(+), 0 deletions(-)

diff --git a/net/phonet/af_phonet.c b/net/phonet/af_phonet.c
index 73aee7f..fd95beb 100644
--- a/net/phonet/af_phonet.c
+++ b/net/phonet/af_phonet.c
@@ -251,6 +251,16 @@ int pn_skb_send(struct sock *sk, struct sk_buff *skb,
 	else if (phonet_address_lookup(net, daddr) == 0) {
 		dev = phonet_device_get(net);
 		skb->pkt_type = PACKET_LOOPBACK;
+	} else if (pn_sockaddr_get_object(target) == 0) {
+		/* Resource routing (small race until phonet_rcv()) */
+		struct sock *sk = pn_find_sock_by_res(net,
+							target->spn_resource);
+		if (sk)	{
+			sock_put(sk);
+			dev = phonet_device_get(net);
+			skb->pkt_type = PACKET_LOOPBACK;
+		} else
+			dev = phonet_route_output(net, daddr);
 	} else
 		dev = phonet_route_output(net, daddr);
 
@@ -383,6 +393,13 @@ static int phonet_rcv(struct sk_buff *skb, struct net_device *dev,
 		goto out;
 	}
 
+	/* resource routing */
+	if (pn_sockaddr_get_object(&sa) == 0) {
+		struct sock *sk = pn_find_sock_by_res(net, sa.spn_resource);
+		if (sk)
+			return sk_receive_skb(sk, skb, 0);
+	}
+
 	/* check if we are the destination */
 	if (phonet_address_lookup(net, pn_sockaddr_get_addr(&sa)) == 0) {
 		/* Phonet packet input */
-- 
1.7.0.4

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