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net: dsa: tag_sja1105: implement sub-VLAN decoding

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Create a subvlan_map as part of each port's tagger private structure.
This keeps reverse mappings of bridge-to-dsa_8021q VLAN retagging rules.

Note that as of this patch, this piece of code is never engaged, due to
the fact that the driver hasn't installed any retagging rule, so we'll
always see packets with a subvlan code of 0 (untagged).

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vladimir Oltean
2020-05-12 20:20:34 +03:00
committed by David S. Miller
parent 3eaae1d05f
commit 84eeb5d460
3 changed files with 25 additions and 0 deletions
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2
include/linux/dsa/sja1105.h
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@@ -9,6 +9,7 @@
#include <linux/skbuff.h>
#include <linux/etherdevice.h>
#include <linux/dsa/8021q.h>
#include <net/dsa.h>
#define ETH_P_SJA1105 ETH_P_DSA_8021Q
@@ -53,6 +54,7 @@ struct sja1105_skb_cb {
((struct sja1105_skb_cb *)DSA_SKB_CB_PRIV(skb))
struct sja1105_port {
u16 subvlan_map[DSA_8021Q_N_SUBVLAN];
struct kthread_worker *xmit_worker;
struct kthread_work xmit_work;
struct sk_buff_head xmit_queue;