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Commit 5f77076d authored by Remi Denis-Courmont's avatar Remi Denis-Courmont Committed by David S. Miller
Browse files

Phonet: provide MAC header operations 



Signed-off-by: default avatarRémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 107d0d9b

include/linux/if_phonet.h

+4 −0
Original line number Diff line number Diff line
@@ -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

net/phonet/af_phonet.c

+29 −0
Original line number Diff line number Diff line
@@ -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.

 */