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net: dsa: tag_8021q: add helpers to deduce whether a VLAN ID is RX or TX VLAN

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The sja1105 implementation can be blind about this, but the felix driver
doesn't do exactly what it's being told, so it needs to know whether it
is a TX or an RX VLAN, so it can install the appropriate type of TCAM
rule.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Vladimir Oltean 2021-01-29 02:59:59 +02:00 committed by Jakub Kicinski
parent de1da8bcf4
commit 9c7caf2806
2 changed files with 27 additions and 2 deletions
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14
include/linux/dsa/8021q.h
View File

@ -64,6 +64,10 @@ int dsa_8021q_rx_source_port(u16 vid);
u16 dsa_8021q_rx_subvlan(u16 vid);
bool vid_is_dsa_8021q_rxvlan(u16 vid);
bool vid_is_dsa_8021q_txvlan(u16 vid);
bool vid_is_dsa_8021q(u16 vid);
#else
@ -123,6 +127,16 @@ u16 dsa_8021q_rx_subvlan(u16 vid)
return 0;
}
bool vid_is_dsa_8021q_rxvlan(u16 vid)
{
return false;
}
bool vid_is_dsa_8021q_txvlan(u16 vid)
{
return false;
}
bool vid_is_dsa_8021q(u16 vid)
{
return false;

15
net/dsa/tag_8021q.c
View File

@ -133,10 +133,21 @@ u16 dsa_8021q_rx_subvlan(u16 vid)
}
EXPORT_SYMBOL_GPL(dsa_8021q_rx_subvlan);
bool vid_is_dsa_8021q_rxvlan(u16 vid)
{
return (vid & DSA_8021Q_DIR_MASK) == DSA_8021Q_DIR_RX;
}
EXPORT_SYMBOL_GPL(vid_is_dsa_8021q_rxvlan);
bool vid_is_dsa_8021q_txvlan(u16 vid)
{
return (vid & DSA_8021Q_DIR_MASK) == DSA_8021Q_DIR_TX;
}
EXPORT_SYMBOL_GPL(vid_is_dsa_8021q_txvlan);
bool vid_is_dsa_8021q(u16 vid)
{
return ((vid & DSA_8021Q_DIR_MASK) == DSA_8021Q_DIR_RX ||
(vid & DSA_8021Q_DIR_MASK) == DSA_8021Q_DIR_TX);
return vid_is_dsa_8021q_rxvlan(vid) || vid_is_dsa_8021q_txvlan(vid);
}
EXPORT_SYMBOL_GPL(vid_is_dsa_8021q);