[dpdk-dev] [PATCH 16/20] net/ice/base: add helper function to aggregate flags

[Qi Zhang <qi.z.zhang@intel.com>]

Add internal helper function ice_xlt_kb_flg_get to aggregate 64 bit
packet flag into 16 bit key builder flags.

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
---
 drivers/net/ice/base/ice_xlt_kb.c | 27 +++++++++++++++++++++++++++
 drivers/net/ice/base/ice_xlt_kb.h |  1 +
 2 files changed, 28 insertions(+)

diff --git a/drivers/net/ice/base/ice_xlt_kb.c b/drivers/net/ice/base/ice_xlt_kb.c
index 8b4043a836..4c1ab747cf 100644
--- a/drivers/net/ice/base/ice_xlt_kb.c
+++ b/drivers/net/ice/base/ice_xlt_kb.c
@@ -187,3 +187,30 @@ struct ice_xlt_kb *ice_xlt_kb_get_rss(struct ice_hw *hw)
 {
 	return _xlt_kb_get(hw, ICE_SID_XLT_KEY_BUILDER_RSS);
 }
+
+/**
+ * ice_xlt_kb_flag_get - aggregate 64 bits packet flag into 16 bits xlt flag
+ * @kb: xlt key build
+ * @pkt_flag: 64 bits packet flag
+ */
+u16 ice_xlt_kb_flag_get(struct ice_xlt_kb *kb, u64 pkt_flag)
+{
+	struct ice_xlt_kb_entry *entry = &kb->entries[0];
+	u16 flg = 0;
+	int i;
+
+	/* check flag 15 */
+	if (kb->flag15 & pkt_flag)
+		flg = (u16)(1u << 15);
+
+	/* check flag 0 - 14 */
+	for (i = 0; i < 15; i++) {
+		/* only check first entry */
+		u16 idx = (u16)(entry->flg0_14_sel[i] & 0x3f);
+
+		if (pkt_flag & (1ul << idx))
+			flg |=  (u16)(1u << i);
+	}
+
+	return flg;
+}
diff --git a/drivers/net/ice/base/ice_xlt_kb.h b/drivers/net/ice/base/ice_xlt_kb.h
index a95d845f89..ec802b663a 100644
--- a/drivers/net/ice/base/ice_xlt_kb.h
+++ b/drivers/net/ice/base/ice_xlt_kb.h
@@ -30,4 +30,5 @@ struct ice_xlt_kb *ice_xlt_kb_get_sw(struct ice_hw *hw);
 struct ice_xlt_kb *ice_xlt_kb_get_acl(struct ice_hw *hw);
 struct ice_xlt_kb *ice_xlt_kb_get_fd(struct ice_hw *hw);
 struct ice_xlt_kb *ice_xlt_kb_get_rss(struct ice_hw *hw);
+u16 ice_xlt_kb_flag_get(struct ice_xlt_kb *kb, u64 pkt_flag);
 #endif /* _ICE_XLT_KB_H */
-- 
2.26.2