[dpdk-dev] [PATCH v2 1/6] net/ice/base: add IP fragment flags

[Qi Zhang <qi.z.zhang@intel.com>]

Add the IPv6 fragment flags and the IPv4 fragment field shift.

Signed-off-by: Ting Xu <ting.xu@intel.com>
Signed-off-by: Jeff Guo <jia.guo@intel.com>
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
Acked-by: Qiming Yang <qiming.yang@intel.com>
---
 drivers/net/ice/base/ice_fdir.c |  2 +-
 drivers/net/ice/base/ice_fdir.h | 16 ++++++++++++----
 2 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ice/base/ice_fdir.c b/drivers/net/ice/base/ice_fdir.c
index 8f9c0d346b..f6a6ff3831 100644
--- a/drivers/net/ice/base/ice_fdir.c
+++ b/drivers/net/ice/base/ice_fdir.c
@@ -1505,7 +1505,7 @@ ice_fdir_get_gen_prgm_pkt(struct ice_hw *hw, struct ice_fdir_fltr *input,
 		ice_pkt_insert_u8(loc, ICE_IPV4_TTL_OFFSET, input->ip.v4.ttl);
 		ice_pkt_insert_mac_addr(loc, input->ext_data.dst_mac);
 		if (frag)
-			loc[20] = ICE_FDIR_IPV4_PKT_FLAG_DF;
+			loc[20] = ICE_FDIR_IPV4_PKT_FLAG_MF;
 		break;
 	case ICE_FLTR_PTYPE_NONF_IPV4_UDP:
 		ice_pkt_insert_mac_addr(pkt, input->ext_data_outer.dst_mac);
diff --git a/drivers/net/ice/base/ice_fdir.h b/drivers/net/ice/base/ice_fdir.h
index 6573f96bc1..b679a8a1bd 100644
--- a/drivers/net/ice/base/ice_fdir.h
+++ b/drivers/net/ice/base/ice_fdir.h
@@ -83,12 +83,20 @@
 
 #define ICE_FDIR_MAX_FLTRS		16384
 
-/* IP v4 has 2 flag bits that enable fragment processing: DF and MF. DF
+/* IPv4 has 2 flag bits that enable fragment processing: DF and MF. DF
  * requests that the packet not be fragmented. MF indicates that a packet has
- * been fragmented.
+ * been fragmented, except that for the last fragment has a non-zero
+ * Fragment Offset field with zero MF.
  */
-#define ICE_FDIR_IPV4_PKT_FLAG_DF		0x20
-#define ICE_FDIR_IPV4_PKT_FLAG_MF		0x40
+#define ICE_FDIR_IPV4_PKT_FLAG_MF		0x20
+#define ICE_FDIR_IPV4_PKT_FLAG_MF_SHIFT	8
+#define ICE_FDIR_IPV4_PKT_FLAG_DF		0x40
+
+/* For IPv6 fragmented packets, all fragments except the last have
+ * the MF flag set.
+ */
+#define ICE_FDIR_IPV6_PKT_FLAG_MF		0x100
+#define ICE_FDIR_IPV6_PKT_FLAG_MF_SHIFT	8
 
 enum ice_fltr_prgm_desc_dest {
 	ICE_FLTR_PRGM_DESC_DEST_DROP_PKT,
-- 
2.26.2