diff options
| author | Vladimir Oltean <vladimir.oltean@nxp.com> | 2022-03-11 23:15:19 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-03-14 10:36:15 +0000 |
| commit | 47d75f7822064d024ec9207c0fc1777f983783b7 (patch) | |
| tree | bcb628614e5c9ee1c07e8f50b06d44e2a6e766f0 /include/net | |
| parent | d538eca85c2aa6ecb5036e6ff47efc93d9f294da (diff) | |
net: dsa: report and change port dscp priority using dcbnl
Similar to the port-based default priority, IEEE 802.1Q-2018 allows the
Application Priority Table to define QoS classes (0 to 7) per IP DSCP
value (0 to 63).
In the absence of an app table entry for a packet with DSCP value X,
QoS classification for that packet falls back to other methods (VLAN PCP
or port-based default). The presence of an app table for DSCP value X
with priority Y makes the hardware classify the packet to QoS class Y.
As opposed to the default-prio where DSA exposes only a "set" in
dsa_switch_ops (because the port-based default is the fallback, it
always exists, either implicitly or explicitly), for DSCP priorities we
expose an "add" and a "del". The addition of a DSCP entry means trusting
that DSCP priority, the deletion means ignoring it.
Drivers that already trust (at least some) DSCP values can describe
their configuration in dsa_switch_ops :: port_get_dscp_prio(), which is
called for each DSCP value from 0 to 63.
Again, there can be more than one dcbnl app table entry for the same
DSCP value, DSA chooses the one with the largest configured priority.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/dsa.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/net/dsa.h b/include/net/dsa.h index 1220af73151b..9bfe984fcdbf 100644 --- a/include/net/dsa.h +++ b/include/net/dsa.h @@ -898,6 +898,11 @@ struct dsa_switch_ops { int (*port_get_default_prio)(struct dsa_switch *ds, int port); int (*port_set_default_prio)(struct dsa_switch *ds, int port, u8 prio); + int (*port_get_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp); + int (*port_add_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp, + u8 prio); + int (*port_del_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp, + u8 prio); /* * Suspend and resume |