From 18a1166de994685d770425086b2bcc1ba567f7ed Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?R=C3=A9mi=20Denis-Courmont?= <remi.denis-courmont@nokia.com>
Date: Wed, 23 Sep 2009 03:17:11 +0000
Subject: [PATCH] Phonet: error on broadcast sending (unimplemented)
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If we ever implement this, then we can stop returning an error.
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
include/linux/phonet.h | 1 +
net/phonet/af_phonet.c | 6 ++++++
2 files changed, 7 insertions(+)
diff --git a/include/linux/phonet.h b/include/linux/phonet.h
index 1ef5a0781831..e5126cff9b2a 100644
--- a/include/linux/phonet.h
+++ b/include/linux/phonet.h
@@ -38,6 +38,7 @@
#define PNPIPE_IFINDEX 2
#define PNADDR_ANY 0
+#define PNADDR_BROADCAST 0xFC
#define PNPORT_RESOURCE_ROUTING 0
/* Values for PNPIPE_ENCAP option */
diff --git a/net/phonet/af_phonet.c b/net/phonet/af_phonet.c
index a662e62a99cf..f60c0c2aacba 100644
--- a/net/phonet/af_phonet.c
+++ b/net/phonet/af_phonet.c
@@ -168,6 +168,12 @@ static int pn_send(struct sk_buff *skb, struct net_device *dev,
goto drop;
}
+ /* Broadcast sending is not implemented */
+ if (pn_addr(dst) == PNADDR_BROADCAST) {
+ err = -EOPNOTSUPP;
+ goto drop;
+ }
+
skb_reset_transport_header(skb);
WARN_ON(skb_headroom(skb) & 1); /* HW assumes word alignment */
skb_push(skb, sizeof(struct phonethdr));