1 files changed, 290 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_protocol_type.h b/drivers/net/ethernet/intel/ice/ice_protocol_type.h
new file mode 100644
index 000000000..02a4e1cf6
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_protocol_type.h
@@ -0,0 +1,290 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2019, Intel Corporation. */
+
+#ifndef _ICE_PROTOCOL_TYPE_H_
+#define _ICE_PROTOCOL_TYPE_H_
+#define ICE_IPV6_ADDR_LENGTH 16
+
+/* Each recipe can match up to 5 different fields. Fields to match can be meta-
+ * data, values extracted from packet headers, or results from other recipes.
+ * One of the 5 fields is reserved for matching the switch ID. So, up to 4
+ * recipes can provide intermediate results to another one through chaining,
+ * e.g. recipes 0, 1, 2, and 3 can provide intermediate results to recipe 4.
+ */
+#define ICE_NUM_WORDS_RECIPE 4
+
+/* Max recipes that can be chained */
+#define ICE_MAX_CHAIN_RECIPE 5
+
+/* 1 word reserved for switch ID from allowed 5 words.
+ * So a recipe can have max 4 words. And you can chain 5 such recipes
+ * together. So maximum words that can be programmed for look up is 5 * 4.
+ */
+#define ICE_MAX_CHAIN_WORDS (ICE_NUM_WORDS_RECIPE * ICE_MAX_CHAIN_RECIPE)
+
+/* Field vector index corresponding to chaining */
+#define ICE_CHAIN_FV_INDEX_START 47
+
+enum ice_protocol_type {
+	ICE_MAC_OFOS = 0,
+	ICE_MAC_IL,
+	ICE_ETYPE_OL,
+	ICE_ETYPE_IL,
+	ICE_VLAN_OFOS,
+	ICE_IPV4_OFOS,
+	ICE_IPV4_IL,
+	ICE_IPV6_OFOS,
+	ICE_IPV6_IL,
+	ICE_TCP_IL,
+	ICE_UDP_OF,
+	ICE_UDP_ILOS,
+	ICE_VXLAN,
+	ICE_GENEVE,
+	ICE_NVGRE,
+	ICE_GTP,
+	ICE_GTP_NO_PAY,
+	ICE_PPPOE,
+	ICE_L2TPV3,
+	ICE_VLAN_EX,
+	ICE_VLAN_IN,
+	ICE_VXLAN_GPE,
+	ICE_SCTP_IL,
+	ICE_PROTOCOL_LAST
+};
+
+enum ice_sw_tunnel_type {
+	ICE_NON_TUN = 0,
+	ICE_SW_TUN_AND_NON_TUN,
+	ICE_SW_TUN_VXLAN,
+	ICE_SW_TUN_GENEVE,
+	ICE_SW_TUN_NVGRE,
+	ICE_SW_TUN_GTPU,
+	ICE_SW_TUN_GTPC,
+	ICE_ALL_TUNNELS /* All tunnel types including NVGRE */
+};
+
+/* Decoders for ice_prot_id:
+ * - F: First
+ * - I: Inner
+ * - L: Last
+ * - O: Outer
+ * - S: Single
+ */
+enum ice_prot_id {
+	ICE_PROT_ID_INVAL	= 0,
+	ICE_PROT_MAC_OF_OR_S	= 1,
+	ICE_PROT_MAC_IL		= 4,
+	ICE_PROT_ETYPE_OL	= 9,
+	ICE_PROT_ETYPE_IL	= 10,
+	ICE_PROT_IPV4_OF_OR_S	= 32,
+	ICE_PROT_IPV4_IL	= 33,
+	ICE_PROT_IPV6_OF_OR_S	= 40,
+	ICE_PROT_IPV6_IL	= 41,
+	ICE_PROT_TCP_IL		= 49,
+	ICE_PROT_UDP_OF		= 52,
+	ICE_PROT_UDP_IL_OR_S	= 53,
+	ICE_PROT_GRE_OF		= 64,
+	ICE_PROT_ESP_F		= 88,
+	ICE_PROT_ESP_2		= 89,
+	ICE_PROT_SCTP_IL	= 96,
+	ICE_PROT_ICMP_IL	= 98,
+	ICE_PROT_ICMPV6_IL	= 100,
+	ICE_PROT_PPPOE		= 103,
+	ICE_PROT_L2TPV3		= 104,
+	ICE_PROT_ARP_OF		= 118,
+	ICE_PROT_META_ID	= 255, /* when offset == metadata */
+	ICE_PROT_INVALID	= 255  /* when offset == ICE_FV_OFFSET_INVAL */
+};
+
+#define ICE_VNI_OFFSET		12 /* offset of VNI from ICE_PROT_UDP_OF */
+
+#define ICE_MAC_OFOS_HW		1
+#define ICE_MAC_IL_HW		4
+#define ICE_ETYPE_OL_HW		9
+#define ICE_ETYPE_IL_HW		10
+#define ICE_VLAN_OF_HW		16
+#define ICE_VLAN_OL_HW		17
+#define ICE_IPV4_OFOS_HW	32
+#define ICE_IPV4_IL_HW		33
+#define ICE_IPV6_OFOS_HW	40
+#define ICE_IPV6_IL_HW		41
+#define ICE_TCP_IL_HW		49
+#define ICE_UDP_ILOS_HW		53
+#define ICE_GRE_OF_HW		64
+#define ICE_PPPOE_HW		103
+#define ICE_L2TPV3_HW		104
+
+#define ICE_UDP_OF_HW	52 /* UDP Tunnels */
+#define ICE_META_DATA_ID_HW 255 /* this is used for tunnel and VLAN type */
+
+#define ICE_MDID_SIZE 2
+
+#define ICE_TUN_FLAG_MDID 21
+#define ICE_TUN_FLAG_MDID_OFF (ICE_MDID_SIZE * ICE_TUN_FLAG_MDID)
+#define ICE_TUN_FLAG_MASK 0xFF
+
+#define ICE_VLAN_FLAG_MDID 20
+#define ICE_VLAN_FLAG_MDID_OFF (ICE_MDID_SIZE * ICE_VLAN_FLAG_MDID)
+#define ICE_PKT_FLAGS_0_TO_15_VLAN_FLAGS_MASK 0xD000
+
+#define ICE_TUN_FLAG_FV_IND 2
+
+/* Mapping of software defined protocol ID to hardware defined protocol ID */
+struct ice_protocol_entry {
+	enum ice_protocol_type type;
+	u8 protocol_id;
+};
+
+struct ice_ether_hdr {
+	u8 dst_addr[ETH_ALEN];
+	u8 src_addr[ETH_ALEN];
+};
+
+struct ice_ethtype_hdr {
+	__be16 ethtype_id;
+};
+
+struct ice_ether_vlan_hdr {
+	u8 dst_addr[ETH_ALEN];
+	u8 src_addr[ETH_ALEN];
+	__be32 vlan_id;
+};
+
+struct ice_vlan_hdr {
+	__be16 type;
+	__be16 vlan;
+};
+
+struct ice_ipv4_hdr {
+	u8 version;
+	u8 tos;
+	__be16 total_length;
+	__be16 id;
+	__be16 frag_off;
+	u8 time_to_live;
+	u8 protocol;
+	__be16 check;
+	__be32 src_addr;
+	__be32 dst_addr;
+};
+
+struct ice_ipv6_hdr {
+	__be32 be_ver_tc_flow;
+	__be16 payload_len;
+	u8 next_hdr;
+	u8 hop_limit;
+	u8 src_addr[ICE_IPV6_ADDR_LENGTH];
+	u8 dst_addr[ICE_IPV6_ADDR_LENGTH];
+};
+
+struct ice_sctp_hdr {
+	__be16 src_port;
+	__be16 dst_port;
+	__be32 verification_tag;
+	__be32 check;
+};
+
+struct ice_l4_hdr {
+	__be16 src_port;
+	__be16 dst_port;
+	__be16 len;
+	__be16 check;
+};
+
+struct ice_udp_tnl_hdr {
+	__be16 field;
+	__be16 proto_type;
+	__be32 vni;     /* only use lower 24-bits */
+};
+
+struct ice_udp_gtp_hdr {
+	u8 flags;
+	u8 msg_type;
+	__be16 rsrvd_len;
+	__be32 teid;
+	__be16 rsrvd_seq_nbr;
+	u8 rsrvd_n_pdu_nbr;
+	u8 rsrvd_next_ext;
+	u8 rsvrd_ext_len;
+	u8 pdu_type;
+	u8 qfi;
+	u8 rsvrd;
+};
+
+struct ice_pppoe_hdr {
+	u8 rsrvd_ver_type;
+	u8 rsrvd_code;
+	__be16 session_id;
+	__be16 length;
+	__be16 ppp_prot_id; /* control and data only */
+};
+
+struct ice_l2tpv3_sess_hdr {
+	__be32 session_id;
+	__be64 cookie;
+};
+
+struct ice_nvgre_hdr {
+	__be16 flags;
+	__be16 protocol;
+	__be32 tni_flow;
+};
+
+union ice_prot_hdr {
+	struct ice_ether_hdr eth_hdr;
+	struct ice_ethtype_hdr ethertype;
+	struct ice_vlan_hdr vlan_hdr;
+	struct ice_ipv4_hdr ipv4_hdr;
+	struct ice_ipv6_hdr ipv6_hdr;
+	struct ice_l4_hdr l4_hdr;
+	struct ice_sctp_hdr sctp_hdr;
+	struct ice_udp_tnl_hdr tnl_hdr;
+	struct ice_nvgre_hdr nvgre_hdr;
+	struct ice_udp_gtp_hdr gtp_hdr;
+	struct ice_pppoe_hdr pppoe_hdr;
+	struct ice_l2tpv3_sess_hdr l2tpv3_sess_hdr;
+};
+
+/* This is mapping table entry that maps every word within a given protocol
+ * structure to the real byte offset as per the specification of that
+ * protocol header.
+ * for e.g. dst address is 3 words in ethertype header and corresponding bytes
+ * are 0, 2, 3 in the actual packet header and src address is at 4, 6, 8
+ */
+struct ice_prot_ext_tbl_entry {
+	enum ice_protocol_type prot_type;
+	/* Byte offset into header of given protocol type */
+	u8 offs[sizeof(union ice_prot_hdr)];
+};
+
+/* Extractions to be looked up for a given recipe */
+struct ice_prot_lkup_ext {
+	u16 prot_type;
+	u8 n_val_words;
+	/* create a buffer to hold max words per recipe */
+	u16 field_off[ICE_MAX_CHAIN_WORDS];
+	u16 field_mask[ICE_MAX_CHAIN_WORDS];
+
+	struct ice_fv_word fv_words[ICE_MAX_CHAIN_WORDS];
+
+	/* Indicate field offsets that have field vector indices assigned */
+	DECLARE_BITMAP(done, ICE_MAX_CHAIN_WORDS);
+};
+
+struct ice_pref_recipe_group {
+	u8 n_val_pairs;		/* Number of valid pairs */
+	struct ice_fv_word pairs[ICE_NUM_WORDS_RECIPE];
+	u16 mask[ICE_NUM_WORDS_RECIPE];
+};
+
+struct ice_recp_grp_entry {
+	struct list_head l_entry;
+
+#define ICE_INVAL_CHAIN_IND 0xFF
+	u16 rid;
+	u8 chain_idx;
+	u16 fv_idx[ICE_NUM_WORDS_RECIPE];
+	u16 fv_mask[ICE_NUM_WORDS_RECIPE];
+	struct ice_pref_recipe_group r_group;
+};
+#endif /* _ICE_PROTOCOL_TYPE_H_ */