[dpdk-dev] [PATCH v2 09/24] net/i40e/base: add link speed convert function

[Qi Zhang]

Introduce a helper function which can convert the AdminQ link speed
definition into a virtchnl definition. This can then be used by host
driver implementations in order to safely convert to the interface
recognized by the virtual functions.

Signed-off-by: Qi Zhang <qi.z.zhang at intel.com>
---
 drivers/net/i40e/base/i40e_prototype.h | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/drivers/net/i40e/base/i40e_prototype.h b/drivers/net/i40e/base/i40e_prototype.h
index acb2023fd..909709784 100644
--- a/drivers/net/i40e/base/i40e_prototype.h
+++ b/drivers/net/i40e/base/i40e_prototype.h
@@ -496,6 +496,38 @@ STATIC INLINE struct i40e_rx_ptype_decoded decode_rx_desc_ptype(u8 ptype)
 	return i40e_ptype_lookup[ptype];
 }
 
+#ifdef PF_DRIVER
+/**
+ * i40e_virtchnl_link_speed - Convert AdminQ link_speed to virtchnl definition
+ * @link_speed: the speed to convert
+ *
+ * Returns the link_speed in terms of the virtchnl interface, for use in
+ * converting link_speed as reported by the AdminQ into the format used for
+ * talking to virtchnl devices. If we can't represent the link speed properly,
+ * report LINK_SPEED_UNKNOWN.
+ **/
+STATIC INLINE enum virtchnl_link_speed
+i40e_virtchnl_link_speed(enum i40e_aq_link_speed link_speed)
+{
+	switch (link_speed) {
+	case I40E_LINK_SPEED_100MB:
+		return VIRTCHNL_LINK_SPEED_100MB;
+	case I40E_LINK_SPEED_1GB:
+		return VIRTCHNL_LINK_SPEED_1GB;
+	case I40E_LINK_SPEED_10GB:
+		return VIRTCHNL_LINK_SPEED_10GB;
+	case I40E_LINK_SPEED_40GB:
+		return VIRTCHNL_LINK_SPEED_40GB;
+	case I40E_LINK_SPEED_20GB:
+		return VIRTCHNL_LINK_SPEED_20GB;
+	case I40E_LINK_SPEED_25GB:
+		return VIRTCHNL_LINK_SPEED_25GB;
+	case I40E_LINK_SPEED_UNKNOWN:
+	default:
+		return VIRTCHNL_LINK_SPEED_UNKNOWN;
+	}
+}
+#endif /* PF_DRIVER */
 /* prototype for functions used for SW spinlocks */
 void i40e_init_spinlock(struct i40e_spinlock *sp);
 void i40e_acquire_spinlock(struct i40e_spinlock *sp);
-- 
2.14.1