ice: Support IPv4 Flow Director filters

Support the addition and deletion of IPv4 filters.

Supported fields are: src-ip, dst-ip, src-port, and dst-port
Supported flow-types are: tcp4, udp4, sctp4, ip4

Example usage:

ethtool -N eth0 flow-type tcp4 src-ip 192.168.0.55 dst-ip 172.16.0.55 \
src-port 16 dst-port 12 action 32

Signed-off-by: Henry Tieman <henry.w.tieman@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 79 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_fdir.h b/drivers/net/ethernet/intel/ice/ice_fdir.h
index 1b69249b40c1..1a13c80e1eac 100644
--- a/drivers/net/ethernet/intel/ice/ice_fdir.h
+++ b/drivers/net/ethernet/intel/ice/ice_fdir.h
@@ -4,11 +4,70 @@
 #ifndef _ICE_FDIR_H_
 #define _ICE_FDIR_H_
 
+#define ICE_FDIR_TUN_PKT_OFF		50
+#define ICE_FDIR_MAX_RAW_PKT_SIZE	(512 + ICE_FDIR_TUN_PKT_OFF)
+
+/* macros for offsets into packets for flow director programming */
+#define ICE_IPV4_SRC_ADDR_OFFSET	26
+#define ICE_IPV4_DST_ADDR_OFFSET	30
+#define ICE_IPV4_TCP_SRC_PORT_OFFSET	34
+#define ICE_IPV4_TCP_DST_PORT_OFFSET	36
+#define ICE_IPV4_UDP_SRC_PORT_OFFSET	34
+#define ICE_IPV4_UDP_DST_PORT_OFFSET	36
+#define ICE_IPV4_SCTP_SRC_PORT_OFFSET	34
+#define ICE_IPV4_SCTP_DST_PORT_OFFSET	36
+#define ICE_IPV4_PROTO_OFFSET		23
+#define ICE_IPV6_SRC_ADDR_OFFSET	22
+#define ICE_IPV6_DST_ADDR_OFFSET	38
+#define ICE_IPV6_TCP_SRC_PORT_OFFSET	54
+#define ICE_IPV6_TCP_DST_PORT_OFFSET	56
+#define ICE_IPV6_UDP_SRC_PORT_OFFSET	54
+#define ICE_IPV6_UDP_DST_PORT_OFFSET	56
+#define ICE_IPV6_SCTP_SRC_PORT_OFFSET	54
+#define ICE_IPV6_SCTP_DST_PORT_OFFSET	56
+/* IP v4 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.
+ */
+#define ICE_FDIR_IPV4_PKT_FLAG_DF		0x20
+
 enum ice_fltr_prgm_desc_dest {
 	ICE_FLTR_PRGM_DESC_DEST_DROP_PKT,
 	ICE_FLTR_PRGM_DESC_DEST_DIRECT_PKT_QINDEX,
 };
 
+enum ice_fltr_prgm_desc_fd_status {
+	ICE_FLTR_PRGM_DESC_FD_STATUS_NONE,
+	ICE_FLTR_PRGM_DESC_FD_STATUS_FD_ID,
+};
+
+/* Flow Director (FD) Filter Programming descriptor */
+struct ice_fd_fltr_desc_ctx {
+	u32 fdid;
+	u16 qindex;
+	u16 cnt_index;
+	u16 fd_vsi;
+	u16 flex_val;
+	u8 comp_q;
+	u8 comp_report;
+	u8 fd_space;
+	u8 cnt_ena;
+	u8 evict_ena;
+	u8 toq;
+	u8 toq_prio;
+	u8 dpu_recipe;
+	u8 drop;
+	u8 flex_prio;
+	u8 flex_mdid;
+	u8 dtype;
+	u8 pcmd;
+	u8 desc_prof_prio;
+	u8 desc_prof;
+	u8 swap;
+	u8 fdid_prio;
+	u8 fdid_mdid;
+};
+
 struct ice_fdir_v4 {
 	__be32 dst_ip;
 	__be32 src_ip;
@@ -47,13 +106,33 @@ struct ice_fdir_fltr {
 	u32 fltr_id;
 };
 
+/* Dummy packet filter definition structure */
+struct ice_fdir_base_pkt {
+	enum ice_fltr_ptype flow;
+	u16 pkt_len;
+	const u8 *pkt;
+	u16 tun_pkt_len;
+	const u8 *tun_pkt;
+};
+
 enum ice_status ice_alloc_fd_res_cntr(struct ice_hw *hw, u16 *cntr_id);
 enum ice_status ice_free_fd_res_cntr(struct ice_hw *hw, u16 cntr_id);
 enum ice_status
 ice_alloc_fd_guar_item(struct ice_hw *hw, u16 *cntr_id, u16 num_fltr);
 enum ice_status
 ice_alloc_fd_shrd_item(struct ice_hw *hw, u16 *cntr_id, u16 num_fltr);
+void
+ice_fdir_get_prgm_desc(struct ice_hw *hw, struct ice_fdir_fltr *input,
+		       struct ice_fltr_desc *fdesc, bool add);
+enum ice_status
+ice_fdir_get_gen_prgm_pkt(struct ice_hw *hw, struct ice_fdir_fltr *input,
+			  u8 *pkt, bool frag, bool tun);
 int ice_get_fdir_cnt_all(struct ice_hw *hw);
+bool ice_fdir_is_dup_fltr(struct ice_hw *hw, struct ice_fdir_fltr *input);
+bool ice_fdir_has_frag(enum ice_fltr_ptype flow);
 struct ice_fdir_fltr *
 ice_fdir_find_fltr_by_idx(struct ice_hw *hw, u32 fltr_idx);
+void
+ice_fdir_update_cntrs(struct ice_hw *hw, enum ice_fltr_ptype flow, bool add);
+void ice_fdir_list_add_fltr(struct ice_hw *hw, struct ice_fdir_fltr *input);
 #endif /* _ICE_FDIR_H_ */