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-rw-r--r--include/linux/if_phonet.h4
-rw-r--r--net/phonet/af_phonet.c29
2 files changed, 33 insertions, 0 deletions
diff --git a/include/linux/if_phonet.h b/include/linux/if_phonet.h
index 22df25fbc4e2..7e989216ec17 100644
--- a/include/linux/if_phonet.h
+++ b/include/linux/if_phonet.h
@@ -12,3 +12,7 @@
/* 6 bytes header + 65535 bytes payload */
#define PHONET_MAX_MTU 65541
#define PHONET_DEV_MTU PHONET_MAX_MTU
+
+#ifdef __KERNEL__
+extern struct header_ops phonet_header_ops;
+#endif
diff --git a/net/phonet/af_phonet.c b/net/phonet/af_phonet.c
index e6771d3961cf..51397ff308bd 100644
--- a/net/phonet/af_phonet.c
+++ b/net/phonet/af_phonet.c
@@ -99,6 +99,35 @@ static struct net_proto_family phonet_proto_family = {
.owner = THIS_MODULE,
};
+/* Phonet device header operations */
+static int pn_header_create(struct sk_buff *skb, struct net_device *dev,
+ unsigned short type, const void *daddr,
+ const void *saddr, unsigned len)
+{
+ u8 *media = skb_push(skb, 1);
+
+ if (type != ETH_P_PHONET)
+ return -1;
+
+ if (!saddr)
+ saddr = dev->dev_addr;
+ *media = *(const u8 *)saddr;
+ return 1;
+}
+
+static int pn_header_parse(const struct sk_buff *skb, unsigned char *haddr)
+{
+ const u8 *media = skb_mac_header(skb);
+ *haddr = *media;
+ return 1;
+}
+
+struct header_ops phonet_header_ops = {
+ .create = pn_header_create,
+ .parse = pn_header_parse,
+};
+EXPORT_SYMBOL(phonet_header_ops);
+
/*
* Prepends an ISI header and sends a datagram.
*/