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net: dsa: allow switches to work without tagging

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In case switch port tagging is disabled (voluntarily, or the switch just
does not support it), allow us to continue using the defined set of
dsa_device_ops in net/dsa/slave.c.

We introduce dsa_protocol_is_tagged() to check whether we need to
override skb->protocol and go through the DSA-specifif packet_type
function, or if we just go on and receive the SKB through the normal
path.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2014-08-27 17:04:52 -07:00 • committed by David S. Miller
parent 0d8bcdd383
commit 5aed85cec2
3 changed files with 26 additions and 4 deletions
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5
include/net/dsa.h
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@ -198,4 +198,9 @@ static inline void *ds_to_priv(struct dsa_switch *ds)
return (void *)(ds + 1);
}
static inline bool dsa_uses_tagged_protocol(struct dsa_switch_tree *dst)
{
return dst->tag_protocol != 0;
}
#endif