If enable hardware outer UDP TX offload checksum, it doesn't take effect
when send 'IPv6/UDP/VXLAN' packet with error outer UDP checksum.
In order to take effect, set the 'L4T_CS' flag valid only when 'L4TUNT'
equals one and 'EIPT' is not zero. If 'L4T_CS' flag marked, the hardware
can calculate the outer tunneling UDP checksum.
Fixes: bd70c451532c ("net/ice: support Tx checksum offload for tunnel")
Signed-off-by: Murphy Yang <murphyx.y...@intel.com>
---
drivers/net/ice/ice_rxtx.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ice/ice_rxtx.c b/drivers/net/ice/ice_rxtx.c
index 5fbd68eafc..9769e216bf 100644
--- a/drivers/net/ice/ice_rxtx.c
+++ b/drivers/net/ice/ice_rxtx.c
@@ -2319,8 +2319,11 @@ ice_parse_tunneling_params(uint64_t ol_flags,
*cd_tunneling |= (tx_offload.l2_len >> 1) <<
ICE_TXD_CTX_QW0_NATLEN_S;
- if ((ol_flags & PKT_TX_OUTER_UDP_CKSUM) &&
- (ol_flags & PKT_TX_OUTER_IP_CKSUM) &&
+ /**
+ * Calculate the tunneling UDP checksum.
+ * Shall be set only if L4TUNT = 01b and EIPT is not zero
+ */
+ if (!(*cd_tunneling & ICE_TX_CTX_EIPT_NONE) &&
(*cd_tunneling & ICE_TXD_CTX_UDP_TUNNELING))
*cd_tunneling |= ICE_TXD_CTX_QW0_L4T_CS_M;
}
--
2.17.1
