Add support for flush all the filters in SW.

Signed-off-by: Wenzhuo Lu <redacted>
Signed-off-by: Wei Zhao <redacted>

---

v2:
--change flush filter function call relationship
---
 drivers/net/ixgbe/ixgbe_ethdev.c | 118 ++++++++++++++++++++++++++++++++++++++-
 drivers/net/ixgbe/ixgbe_ethdev.h |   9 +++
 drivers/net/ixgbe/ixgbe_fdir.c   |  24 ++++++++
 drivers/net/ixgbe/ixgbe_pf.c     |   1 +
 4 files changed, 150 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index d68de65..0de1318 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c

@@ -61,6 +61,8 @@
 #include <rte_random.h>
 #include <rte_dev.h>
 #include <rte_hash_crc.h>
+#include <rte_flow.h>
+#include <rte_flow_driver.h>
 
 #include "ixgbe_logs.h"
 #include "base/ixgbe_api.h"

@@ -386,7 +388,8 @@ static int ixgbe_dev_udp_tunnel_port_del(struct rte_eth_dev *dev,
 					 struct rte_eth_udp_tunnel *udp_tunnel);
 static int ixgbe_filter_restore(struct rte_eth_dev *dev);
 static void ixgbe_l2_tunnel_conf(struct rte_eth_dev *dev);
-
+static int ixgbe_flow_flush(struct rte_eth_dev *dev,
+		struct rte_flow_error *error);