net: mscc: ocelot: refactor ocelot_port_inject_frame out of ocelot_port_xmit

The felix DSA driver will inject some frames through register MMIO, same
as ocelot switchdev currently does. So we need to be able to reuse the
common code.

Also create some shim definitions, since the DSA tagger can be compiled
without support for the switch driver.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 22 insertions, 0 deletions

diff --git a/include/soc/mscc/ocelot.h b/include/soc/mscc/ocelot.h
index 40792b37bb9f..a22aa944e921 100644
--- a/include/soc/mscc/ocelot.h
+++ b/include/soc/mscc/ocelot.h
@@ -742,6 +742,28 @@ u32 __ocelot_target_read_ix(struct ocelot *ocelot, enum ocelot_target target,
 void __ocelot_target_write_ix(struct ocelot *ocelot, enum ocelot_target target,
 			      u32 val, u32 reg, u32 offset);
 
+/* Packet I/O */
+#if IS_ENABLED(CONFIG_MSCC_OCELOT_SWITCH_LIB)
+
+bool ocelot_can_inject(struct ocelot *ocelot, int grp);
+void ocelot_port_inject_frame(struct ocelot *ocelot, int port, int grp,
+			      u32 rew_op, struct sk_buff *skb);
+
+#else
+
+static inline bool ocelot_can_inject(struct ocelot *ocelot, int grp)
+{
+	return false;
+}
+
+static inline void ocelot_port_inject_frame(struct ocelot *ocelot, int port,
+					    int grp, u32 rew_op,
+					    struct sk_buff *skb)
+{
+}
+
+#endif
+
 /* Hardware initialization */
 int ocelot_regfields_init(struct ocelot *ocelot,
 			  const struct reg_field *const regfields);