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

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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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);