ice: Add GTPU FDIR filter for AVF

Add new FDIR filter type to forward GTPU packets by matching TEID or QFI.
The filter is only enabled when COMMS DDP package is downloaded.

Signed-off-by: Yahui Cao <yahui.cao@intel.com>
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
Tested-by: Chen Bo <BoX.C.Chen@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

1 files changed, 117 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_fdir.c b/drivers/net/ethernet/intel/ice/ice_fdir.c
index b9c65d0c9271..e0b1aa1c5f2c 100644
--- a/drivers/net/ethernet/intel/ice/ice_fdir.c
+++ b/drivers/net/ethernet/intel/ice/ice_fdir.c
@@ -40,6 +40,66 @@ static const u8 ice_fdir_ipv4_pkt[] = {
 	0x00, 0x00
 };
 
+static const u8 ice_fdir_udp4_gtpu4_pkt[] = {
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x45, 0x00,
+	0x00, 0x4c, 0x00, 0x00, 0x40, 0x00, 0x40, 0x11,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x08, 0x68, 0x08, 0x68, 0x00, 0x00,
+	0x00, 0x00, 0x34, 0xff, 0x00, 0x28, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x85, 0x02, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x45, 0x00,
+	0x00, 0x1c, 0x00, 0x00, 0x40, 0x00, 0x40, 0x11,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00,
+};
+
+static const u8 ice_fdir_tcp4_gtpu4_pkt[] = {
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x45, 0x00,
+	0x00, 0x58, 0x00, 0x00, 0x40, 0x00, 0x40, 0x11,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x08, 0x68, 0x08, 0x68, 0x00, 0x00,
+	0x00, 0x00, 0x34, 0xff, 0x00, 0x28, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x85, 0x02, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x45, 0x00,
+	0x00, 0x28, 0x00, 0x00, 0x40, 0x00, 0x40, 0x06,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+};
+
+static const u8 ice_fdir_icmp4_gtpu4_pkt[] = {
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x45, 0x00,
+	0x00, 0x4c, 0x00, 0x00, 0x40, 0x00, 0x40, 0x11,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x08, 0x68, 0x08, 0x68, 0x00, 0x00,
+	0x00, 0x00, 0x34, 0xff, 0x00, 0x28, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x85, 0x02, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x45, 0x00,
+	0x00, 0x1c, 0x00, 0x00, 0x40, 0x00, 0x40, 0x01,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00,
+};
+
+static const u8 ice_fdir_ipv4_gtpu4_pkt[] = {
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x45, 0x00,
+	0x00, 0x44, 0x00, 0x00, 0x40, 0x00, 0x40, 0x11,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x08, 0x68, 0x08, 0x68, 0x00, 0x00,
+	0x00, 0x00, 0x34, 0xff, 0x00, 0x28, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x85, 0x02, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x45, 0x00,
+	0x00, 0x14, 0x00, 0x00, 0x40, 0x00, 0x40, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00,
+};
+
 static const u8 ice_fdir_non_ip_l2_pkt[] = {
 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
@@ -245,6 +305,34 @@ static const struct ice_fdir_base_pkt ice_fdir_pkt[] = {
 		sizeof(ice_fdir_ip4_tun_pkt), ice_fdir_ip4_tun_pkt,
 	},
 	{
+		ICE_FLTR_PTYPE_NONF_IPV4_GTPU_IPV4_UDP,
+		sizeof(ice_fdir_udp4_gtpu4_pkt),
+		ice_fdir_udp4_gtpu4_pkt,
+		sizeof(ice_fdir_udp4_gtpu4_pkt),
+		ice_fdir_udp4_gtpu4_pkt,
+	},
+	{
+		ICE_FLTR_PTYPE_NONF_IPV4_GTPU_IPV4_TCP,
+		sizeof(ice_fdir_tcp4_gtpu4_pkt),
+		ice_fdir_tcp4_gtpu4_pkt,
+		sizeof(ice_fdir_tcp4_gtpu4_pkt),
+		ice_fdir_tcp4_gtpu4_pkt,
+	},
+	{
+		ICE_FLTR_PTYPE_NONF_IPV4_GTPU_IPV4_ICMP,
+		sizeof(ice_fdir_icmp4_gtpu4_pkt),
+		ice_fdir_icmp4_gtpu4_pkt,
+		sizeof(ice_fdir_icmp4_gtpu4_pkt),
+		ice_fdir_icmp4_gtpu4_pkt,
+	},
+	{
+		ICE_FLTR_PTYPE_NONF_IPV4_GTPU_IPV4_OTHER,
+		sizeof(ice_fdir_ipv4_gtpu4_pkt),
+		ice_fdir_ipv4_gtpu4_pkt,
+		sizeof(ice_fdir_ipv4_gtpu4_pkt),
+		ice_fdir_ipv4_gtpu4_pkt,
+	},
+	{
 		ICE_FLTR_PTYPE_NON_IP_L2,
 		sizeof(ice_fdir_non_ip_l2_pkt), ice_fdir_non_ip_l2_pkt,
 		sizeof(ice_fdir_non_ip_l2_pkt), ice_fdir_non_ip_l2_pkt,
@@ -492,6 +580,22 @@ static void ice_pkt_insert_ipv6_addr(u8 *pkt, int offset, __be32 *addr)
 }
 
 /**
+ * ice_pkt_insert_u6_qfi - insert a u6 value QFI into a memory buffer for GTPU
+ * @pkt: packet buffer
+ * @offset: offset into buffer
+ * @data: 8 bit value to convert and insert into pkt at offset
+ *
+ * This function is designed for inserting QFI (6 bits) for GTPU.
+ */
+static void ice_pkt_insert_u6_qfi(u8 *pkt, int offset, u8 data)
+{
+	u8 ret;
+
+	ret = (data & 0x3F) + (*(pkt + offset) & 0xC0);
+	memcpy(pkt + offset, &ret, sizeof(ret));
+}
+
+/**
  * ice_pkt_insert_u8 - insert a u8 value into a memory buffer.
  * @pkt: packet buffer
  * @offset: offset into buffer
@@ -685,6 +789,19 @@ ice_fdir_get_gen_prgm_pkt(struct ice_hw *hw, struct ice_fdir_fltr *input,
 				  input->ip.v4.proto);
 		ice_pkt_insert_mac_addr(loc, input->ext_data.dst_mac);
 		break;
+	case ICE_FLTR_PTYPE_NONF_IPV4_GTPU_IPV4_UDP:
+	case ICE_FLTR_PTYPE_NONF_IPV4_GTPU_IPV4_TCP:
+	case ICE_FLTR_PTYPE_NONF_IPV4_GTPU_IPV4_ICMP:
+	case ICE_FLTR_PTYPE_NONF_IPV4_GTPU_IPV4_OTHER:
+		ice_pkt_insert_u32(loc, ICE_IPV4_DST_ADDR_OFFSET,
+				   input->ip.v4.src_ip);
+		ice_pkt_insert_u32(loc, ICE_IPV4_SRC_ADDR_OFFSET,
+				   input->ip.v4.dst_ip);
+		ice_pkt_insert_u32(loc, ICE_IPV4_GTPU_TEID_OFFSET,
+				   input->gtpu_data.teid);
+		ice_pkt_insert_u6_qfi(loc, ICE_IPV4_GTPU_QFI_OFFSET,
+				      input->gtpu_data.qfi);
+		break;
 	case ICE_FLTR_PTYPE_NON_IP_L2:
 		ice_pkt_insert_u16(loc, ICE_MAC_ETHTYPE_OFFSET,
 				   input->ext_data.ether_type);