linux-dev - Linux kernel development work

Age	Commit message (Collapse)	Author	Files	Lines
2021-08-02	net: dsa: remove the struct packet_type argument from dsa_device_ops::rcv()	Vladimir Oltean	1	-2/+1
	No tagging driver uses this. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-11	net: dsa: generalize overhead for taggers that use both headers and trailers	Vladimir Oltean	1	-1/+1
	Some really really weird switches just couldn't decide whether to use a normal or a tail tagger, so they just did both. This creates problems for DSA, because we only have the concept of an 'overhead' which can be applied to the headroom or to the tailroom of the skb (like for example during the central TX reallocation procedure), depending on the value of bool tail_tag, but not to both. We need to generalize DSA to cater for these odd switches by transforming the 'overhead / tail_tag' pair into 'needed_headroom / needed_tailroom'. The DSA master's MTU is increased to account for both. The flow dissector code is modified such that it only calls the DSA adjustment callback if the tagger has a non-zero header length. Taggers are trivially modified to declare either needed_headroom or needed_tailroom, based on the tail_tag value that they currently declare. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-11-02	net: dsa: tag_ar9331: let DSA core deal with TX reallocation	Vladimir Oltean	1	-3/+0
	Now that we have a central TX reallocation procedure that accounts for the tagger's needed headroom in a generic way, we can remove the skb_cow_head call. Cc: Per Forlin <per.forlin@axis.com> Cc: Oleksij Rempel <linux@rempel-privat.de> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Tested-by: Oleksij Rempel <linux@rempel-privat.de> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-02-14	net: dsa: tag_ar9331: Make sure there is headroom for tag	Per Forlin	1	-1/+1
	Passing tag size to skb_cow_head will make sure there is enough headroom for the tag data. This change does not introduce any overhead in case there is already available headroom for tag. Signed-off-by: Per Forlin <perfn@axis.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-20	net: dsa: add support for Atheros AR9331 TAG format	Oleksij Rempel	1	-0/+96
	Add support for tag format used in Atheros AR9331 built-in switch. Reviewed-by: Vivien Didelot <vivien.didelot@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>