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Commit a5dd3087 authored by Andrew Lunn's avatar Andrew Lunn Committed by David S. Miller
Browse files

net: dsa: Add overhead to tag protocol ops. 



Each DSA tag protocol needs to add additional headers to the Ethernet
frame in order to direct it towards a specific switch egress port. It
must also remove the head from a frame received from a
switch. Indicate the maximum size of these headers in the tag protocol
ops structure, so the core can take these overheads into account.

Signed-off-by: default avatarAndrew Lunn <andrew@lunn.ch>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5c327f67

include/net/dsa.h

+1 −0
Original line number Diff line number Diff line
@@ -113,6 +113,7 @@ struct dsa_device_ops { 
			       struct packet_type *pt);

	int (*flow_dissect)(const struct sk_buff *skb, __be16 *proto,

			    int *offset);

	unsigned int overhead;

};



struct dsa_switch_tree {

net/dsa/tag_brcm.c

+2 −0
Original line number Diff line number Diff line
@@ -174,6 +174,7 @@ static struct sk_buff *brcm_tag_rcv(struct sk_buff *skb, struct net_device *dev, 
const struct dsa_device_ops brcm_netdev_ops = {

	.xmit	= brcm_tag_xmit,

	.rcv	= brcm_tag_rcv,

	.overhead = BRCM_TAG_LEN,

};

#endif
@@ -196,5 +197,6 @@ static struct sk_buff *brcm_tag_rcv_prepend(struct sk_buff *skb, 
const struct dsa_device_ops brcm_prepend_netdev_ops = {

	.xmit	= brcm_tag_xmit_prepend,

	.rcv	= brcm_tag_rcv_prepend,

	.overhead = BRCM_TAG_LEN,

};

#endif

net/dsa/tag_dsa.c

+1 −0
Original line number Diff line number Diff line
@@ -149,4 +149,5 @@ static struct sk_buff *dsa_rcv(struct sk_buff *skb, struct net_device *dev, 
const struct dsa_device_ops dsa_netdev_ops = {

	.xmit	= dsa_xmit,

	.rcv	= dsa_rcv,

	.overhead = DSA_HLEN,

};

net/dsa/tag_edsa.c

+1 −0
Original line number Diff line number Diff line
@@ -168,4 +168,5 @@ static struct sk_buff *edsa_rcv(struct sk_buff *skb, struct net_device *dev, 
const struct dsa_device_ops edsa_netdev_ops = {

	.xmit	= edsa_xmit,

	.rcv	= edsa_rcv,

	.overhead = EDSA_HLEN,

};

net/dsa/tag_gswip.c

+1 −0
Original line number Diff line number Diff line
@@ -106,4 +106,5 @@ static struct sk_buff *gswip_tag_rcv(struct sk_buff *skb, 
const struct dsa_device_ops gswip_netdev_ops = {

	.xmit = gswip_tag_xmit,

	.rcv = gswip_tag_rcv,

	.overhead = GSWIP_RX_HEADER_LEN,

};