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[v3,net-next,2/7] net: dsa: Pass ndo_setup_tc slave callback to drivers

Message ID 20190915015314.26605-3-olteanv@gmail.com
State Superseded
Delegated to: David Miller
Headers show
Series tc-taprio offload for SJA1105 DSA | expand

Commit Message

Vladimir Oltean Sept. 15, 2019, 1:53 a.m. UTC 
DSA currently handles shared block filters (for the classifier-action
qdisc) in the core due to what I believe are simply pragmatic reasons -
hiding the complexity from drivers and offerring a simple API for port
mirroring.

Extend the dsa_slave_setup_tc function by passing all other qdisc
offloads to the driver layer, where the driver may choose what it
implements and how. DSA is simply a pass-through in this case.

Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Acked-by: Kurt Kanzenbach <kurt@linutronix.de>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
---
 include/net/dsa.h |  2 ++
 net/dsa/slave.c   | 12 ++++++++----
 2 files changed, 10 insertions(+), 4 deletions(-)
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Patch

diff --git a/include/net/dsa.h b/include/net/dsa.h
index 96acb14ec1a8..541fb514e31d 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -515,6 +515,8 @@  struct dsa_switch_ops {
 				   bool ingress);
 	void	(*port_mirror_del)(struct dsa_switch *ds, int port,
 				   struct dsa_mall_mirror_tc_entry *mirror);
+	int	(*port_setup_tc)(struct dsa_switch *ds, int port,
+				 enum tc_setup_type type, void *type_data);
 
 	/*
 	 * Cross-chip operations
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 9a88035517a6..75d58229a4bd 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -1035,12 +1035,16 @@  static int dsa_slave_setup_tc_block(struct net_device *dev,
 static int dsa_slave_setup_tc(struct net_device *dev, enum tc_setup_type type,
 			      void *type_data)
 {
-	switch (type) {
-	case TC_SETUP_BLOCK:
+	struct dsa_port *dp = dsa_slave_to_port(dev);
+	struct dsa_switch *ds = dp->ds;
+
+	if (type == TC_SETUP_BLOCK)
 		return dsa_slave_setup_tc_block(dev, type_data);
-	default:
+
+	if (!ds->ops->port_setup_tc)
 		return -EOPNOTSUPP;
-	}
+
+	return ds->ops->port_setup_tc(ds, dp->index, type, type_data);
 }
 
 static void dsa_slave_get_stats64(struct net_device *dev,