Commit 396138f0 authored by Lennert Buytenhek's avatar Lennert Buytenhek Committed by David S. Miller
Browse files

dsa: add support for Trailer tagging format 



This adds support for the Trailer switch tagging format.  This is
another tagging that doesn't explicitly mark tagged packets with a
distinct ethertype, so that we need to add a similar hack in the
receive path as for the Original DSA tagging format.

Signed-off-by: default avatarLennert Buytenhek <buytenh@marvell.com>
Tested-by: default avatarByron Bradley <byron.bbradley@gmail.com>
Tested-by: default avatarTim Ellis <tim.ellis@mac.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 2e5f0320

include/linux/if_ether.h

+1 −0
Original line number Diff line number Diff line
@@ -102,6 +102,7 @@ 
#define ETH_P_HDLC	0x0019		/* HDLC frames			*/

#define ETH_P_ARCNET	0x001A		/* 1A for ArcNet :-)            */

#define ETH_P_DSA	0x001B		/* Distributed Switch Arch.	*/

#define ETH_P_TRAILER	0x001C		/* Trailer switch tagging	*/

#define ETH_P_PHONET	0x00F5		/* Nokia Phonet frames          */



/*

include/linux/netdevice.h

+10 −0
Original line number Diff line number Diff line
@@ -812,6 +812,16 @@ static inline bool netdev_uses_dsa_tags(struct net_device *dev) 
	return 0;

}



static inline bool netdev_uses_trailer_tags(struct net_device *dev)

{

#ifdef CONFIG_NET_DSA_TAG_TRAILER

	if (dev->dsa_ptr != NULL)

		return dsa_uses_trailer_tags(dev->dsa_ptr);

#endif



	return 0;

}



/**

 *	netdev_priv - access network device private data

 *	@dev: network device

include/net/dsa.h

+1 −0
Original line number Diff line number Diff line
@@ -31,6 +31,7 @@ struct dsa_platform_data { 
};



extern bool dsa_uses_dsa_tags(void *dsa_ptr);

extern bool dsa_uses_trailer_tags(void *dsa_ptr);





#endif

net/dsa/Kconfig

+4 −0
Original line number Diff line number Diff line
@@ -18,6 +18,10 @@ config NET_DSA_TAG_EDSA 
	bool

	default n



config NET_DSA_TAG_TRAILER

	bool

	default n





# switch drivers

config NET_DSA_MV88E6XXX

net/dsa/Makefile

+1 −0
Original line number Diff line number Diff line 
# tagging formats

obj-$(CONFIG_NET_DSA_TAG_DSA) += tag_dsa.o

obj-$(CONFIG_NET_DSA_TAG_EDSA) += tag_edsa.o

obj-$(CONFIG_NET_DSA_TAG_TRAILER) += tag_trailer.o



# switch drivers

obj-$(CONFIG_NET_DSA_MV88E6XXX) += mv88e6xxx.o

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