net: airoha: configure QoS channel for HW accelerated flowtable traffic

As done for the SW path, configure the QoS channel for HW accelerated
traffic according to the user port index when forwarding to a DSA port,
or rely on the GDM port identifier otherwise. This allows HTB shaping
to be applied to HW accelerated traffic.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20260430-airoha-ppe-qos-channel-v1-1-5ef9221e85c1@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/airoha/airoha_ppe.c b/drivers/net/ethernet/airoha/airoha_ppe.c
index 5c9dff6bccd1e3a62e18c840d80ee864fded23f9..e833c50ac35fead537d6af1a38b8a340ebecd79f 100644 (file)
--- a/drivers/net/ethernet/airoha/airoha_ppe.c
+++ b/drivers/net/ethernet/airoha/airoha_ppe.c
@@ -334,7 +334,7 @@ static int airoha_ppe_foe_entry_prepare(struct airoha_eth *eth,
                                                info.wcid);
                } else {
                        struct airoha_gdm_port *port = netdev_priv(dev);
-                       u8 pse_port;
+                       u8 pse_port, channel;
 
                        if (!airoha_is_valid_gdm_port(eth, port))
                                return -EINVAL;
@@ -347,6 +347,14 @@ static int airoha_ppe_foe_entry_prepare(struct airoha_eth *eth,
                                               * loopback
                                               */
 
+                       /* For traffic forwarded to DSA devices select QoS
+                        * channel according to the DSA user port index, rely
+                        * on port id otherwise.
+                        */
+                       channel = dsa_port >= 0 ? dsa_port : port->id;
+                       channel = channel % AIROHA_NUM_QOS_CHANNELS;
+                       qdata |= FIELD_PREP(AIROHA_FOE_CHANNEL, channel);
+
                        val |= FIELD_PREP(AIROHA_FOE_IB2_PSE_PORT, pse_port) |
                               AIROHA_FOE_IB2_PSE_QOS;
                        /* For downlink traffic consume SRAM memory for hw