[dpdk-dev] [PATCH v4 1/2] net/ixgbe: add SSE4.1 support to vPMD's minimum requirement

[Qi Zhang]

x86 vPMD will be disabled if currently platform does not support SSE4.1.
This is the prework to enable vPMD ptype offload where SSE4.1 instrunctions
will be involved.

Signed-off-by: Qi Zhang <qi.z.zhang at intel.com>
---
 drivers/net/ixgbe/ixgbe_rxtx_vec_sse.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/ixgbe/ixgbe_rxtx_vec_sse.c b/drivers/net/ixgbe/ixgbe_rxtx_vec_sse.c
index a7bc199..fbbd872 100644
--- a/drivers/net/ixgbe/ixgbe_rxtx_vec_sse.c
+++ b/drivers/net/ixgbe/ixgbe_rxtx_vec_sse.c
@@ -652,5 +652,9 @@ ixgbe_txq_vec_setup(struct ixgbe_tx_queue *txq)
 int __attribute__((cold))
 ixgbe_rx_vec_dev_conf_condition_check(struct rte_eth_dev *dev)
 {
+	/* need SSE4.1 support */
+	if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_SSE4_1))
+		return -1;
+
 	return ixgbe_rx_vec_dev_conf_condition_check_default(dev);
 }
-- 
2.7.4