[dpdk-dev] [PATCH] i40e: fix flexible payload selection

[Jingjing Wu]

When setting up flexible payload selection rules, it is allowed
that setting value to 63 to disable the rule (NONUSE_FLX_PIT_DEST_OFF).
However, MK_FLX_PIT macro is always adding an offset value 50
(I40E_FLX_OFFSET_IN_FIELD_VECTOR), it will be set to "63 + 50" and
when setting NONUSE_FLX_PIT_DEST_OFF to disable it. It breaks
the functionality.
This patch fixes this issue.

Fixes: d8b90c4eabe9 ("i40e: take flow director flexible payload
                      configuration")

Reported-by: Michael Habibi <mikehabibi at gmail.com>
Signed-off-by: Jingjing Wu <jingjing.wu at intel.com>
---
 drivers/net/i40e/i40e_fdir.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/i40e/i40e_fdir.c b/drivers/net/i40e/i40e_fdir.c
index 8aa41e5..efbcd18 100644
--- a/drivers/net/i40e/i40e_fdir.c
+++ b/drivers/net/i40e/i40e_fdir.c
@@ -94,7 +94,9 @@
 		I40E_PRTQF_FLX_PIT_SOURCE_OFF_MASK) | \
 	(((fsize) << I40E_PRTQF_FLX_PIT_FSIZE_SHIFT) & \
 			I40E_PRTQF_FLX_PIT_FSIZE_MASK) | \
-	((((dst_offset) + I40E_FLX_OFFSET_IN_FIELD_VECTOR) << \
+	((((dst_offset) == NONUSE_FLX_PIT_DEST_OFF ? \
+			NONUSE_FLX_PIT_DEST_OFF : \
+			((dst_offset) + I40E_FLX_OFFSET_IN_FIELD_VECTOR)) << \
 			I40E_PRTQF_FLX_PIT_DEST_OFF_SHIFT) & \
 			I40E_PRTQF_FLX_PIT_DEST_OFF_MASK))
 
-- 
2.4.0