[dpdk-dev] [PATCH 08/10] net/ice/base: choose TCP dummy packet by protocol

[Qi Zhang]

In order to find proper dummy packets for switch filter,
it need to check ipv4 next protocol number, if it is 0x06,
which means next payload is TCP, we need to use TCP
format dummy packet.

Signed-off-by: Wei Zhao <wei.zhao1 at intel.com>
Signed-off-by: Paul M Stillwell Jr <paul.m.stillwell.jr at intel.com>
Signed-off-by: Qi Zhang <qi.z.zhang at intel.com>
---
 drivers/net/ice/base/ice_switch.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/net/ice/base/ice_switch.c b/drivers/net/ice/base/ice_switch.c
index 06d8f9c55..ee0813b52 100644
--- a/drivers/net/ice/base/ice_switch.c
+++ b/drivers/net/ice/base/ice_switch.c
@@ -13,6 +13,7 @@
 #define ICE_IPV4_NVGRE_PROTO_ID		0x002F
 #define ICE_PPP_IPV6_PROTO_ID		0x0057
 #define ICE_IPV6_ETHER_ID		0x86DD
+#define ICE_TCP_PROTO_ID		0x06
 
 /* Dummy ethernet header needed in the ice_aqc_sw_rules_elem
  * struct to configure any switch filter rules.
@@ -6836,6 +6837,12 @@ ice_find_dummy_packet(struct ice_adv_lkup_elem *lkups, u16 lkups_cnt,
 			 lkups[i].m_u.ethertype.ethtype_id ==
 					0xFFFF)
 			ipv6 = true;
+		else if (lkups[i].type == ICE_IPV4_IL &&
+			 lkups[i].h_u.ipv4_hdr.protocol ==
+				ICE_TCP_PROTO_ID &&
+			 lkups[i].m_u.ipv4_hdr.protocol ==
+				0xFF)
+			tcp = true;
 	}
 
 	if (tun_type == ICE_SW_TUN_IPV4_ESP) {
-- 
2.13.6