Phonet: provide MAC header operations (5f77076d) · Commits · 戴 / test

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

+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.
		*/