net/ice/base: add protocol structures and defines

Add the structures and defines that define what
protocols the NIC can handle.

Signed-off-by: Paul M Stillwell Jr <paul.m.stillwell.jr@intel.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>

diff --git a/drivers/net/ice/base/ice_protocol_type.h b/drivers/net/ice/base/ice_protocol_type.h
new file mode 100644 (file)
index 0000000..7b92c71
--- /dev/null
+++ b/drivers/net/ice/base/ice_protocol_type.h
@@ -0,0 +1,248 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2001-2018
+ */
+
+#ifndef _ICE_PROTOCOL_TYPE_H_
+#define _ICE_PROTOCOL_TYPE_H_
+#include "ice_flex_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_IPV4_OFOS,
+       ICE_IPV4_IL,
+       ICE_IPV6_IL,
+       ICE_IPV6_OFOS,
+       ICE_TCP_IL,
+       ICE_UDP_ILOS,
+       ICE_SCTP_IL,
+       ICE_VXLAN,
+       ICE_GENEVE,
+       ICE_VXLAN_GPE,
+       ICE_NVGRE,
+       ICE_PROTOCOL_LAST
+};
+
+enum ice_sw_tunnel_type {
+       ICE_NON_TUN,
+       ICE_SW_TUN_VXLAN_GPE,
+       ICE_SW_TUN_GENEVE,
+       ICE_SW_TUN_VXLAN,
+       ICE_SW_TUN_NVGRE,
+       ICE_SW_TUN_UDP, /* This means all "UDP" tunnel types: VXLAN-GPE, VXLAN
+                        * and GENEVE
+                        */
+       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_O2         = 2,
+       ICE_PROT_MAC_IL         = 4,
+       ICE_PROT_MAC_IN_MAC     = 7,
+       ICE_PROT_ETYPE_OL       = 9,
+       ICE_PROT_ETYPE_IL       = 10,
+       ICE_PROT_PAY            = 15,
+       ICE_PROT_EVLAN_O        = 16,
+       ICE_PROT_VLAN_O         = 17,
+       ICE_PROT_VLAN_IF        = 18,
+       ICE_PROT_MPLS_OL_MINUS_1 = 27,
+       ICE_PROT_MPLS_OL_OR_OS  = 28,
+       ICE_PROT_MPLS_IL        = 29,
+       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_IPV6_FRAG      = 47,
+       ICE_PROT_TCP_IL         = 49,
+       ICE_PROT_UDP_OF         = 52,
+       ICE_PROT_UDP_IL_OR_S    = 53,
+       ICE_PROT_GRE_OF         = 64,
+       ICE_PROT_NSH_F          = 84,
+       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_VRRP_F         = 101,
+       ICE_PROT_OSPF           = 102,
+       ICE_PROT_ATAOE_OF       = 114,
+       ICE_PROT_CTRL_OF        = 116,
+       ICE_PROT_LLDP_OF        = 117,
+       ICE_PROT_ARP_OF         = 118,
+       ICE_PROT_EAPOL_OF       = 120,
+       ICE_PROT_META_ID        = 255, /* when offset == metaddata */
+       ICE_PROT_INVALID        = 255  /* when offset == 0xFF */
+};
+
+
+#define ICE_MAC_OFOS_HW                1
+#define ICE_MAC_IL_HW          4
+#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_SCTP_IL_HW         96
+
+/* ICE_UDP_OF is used to identify all 3 tunnel types
+ * VXLAN, GENEVE and VXLAN_GPE. To differentiate further
+ * need to use flags from the field vector
+ */
+#define ICE_UDP_OF_HW  52 /* UDP Tunnels */
+#define ICE_GRE_OF_HW  64 /* NVGRE */
+#define ICE_META_DATA_ID_HW 255 /* this is used for tunnel type */
+
+#define ICE_TUN_FLAG_MASK 0xFF
+#define ICE_TUN_FLAG_FV_IND 2
+
+#define ICE_PROTOCOL_MAX_ENTRIES 16
+
+/* 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];
+       u16 ethtype_id;
+};
+
+struct ice_ether_vlan_hdr {
+       u8 dst_addr[ETH_ALEN];
+       u8 src_addr[ETH_ALEN];
+       u32 vlan_id;
+};
+
+struct ice_ipv4_hdr {
+       u8 version;
+       u8 tos;
+       u16 total_length;
+       u16 id;
+       u16 frag_off;
+       u8 time_to_live;
+       u8 protocol;
+       u16 check;
+       u32 src_addr;
+       u32 dst_addr;
+};
+
+struct ice_ipv6_hdr {
+       u8 version;
+       u8 tc;
+       u16 flow_label;
+       u16 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 {
+       u16 src_port;
+       u16 dst_port;
+       u32 verification_tag;
+       u32 check;
+};
+
+struct ice_l4_hdr {
+       u16 src_port;
+       u16 dst_port;
+       u16 len;
+       u16 check;
+};
+
+struct ice_udp_tnl_hdr {
+       u16 field;
+       u16 proto_type;
+       u16 vni;
+};
+
+struct ice_nvgre {
+       u16 tni;
+       u16 flow_id;
+};
+
+union ice_prot_hdr {
+               struct ice_ether_hdr eth_hdr;
+               struct ice_ipv4_hdr ipv4_hdr;
+               struct ice_ipv6_hdr ice_ipv6_ofos_hdr;
+               struct ice_l4_hdr l4_hdr;
+               struct ice_sctp_hdr sctp_hdr;
+               struct ice_udp_tnl_hdr tnl_hdr;
+               struct ice_nvgre nvgre_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 */
+       u8 field_off[ICE_MAX_CHAIN_WORDS];
+
+       struct ice_fv_word fv_words[ICE_MAX_CHAIN_WORDS];
+
+       /* Indicate field offsets that have field vector indices assigned */
+       ice_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];
+};
+
+struct ice_recp_grp_entry {
+       struct LIST_ENTRY_TYPE l_entry;
+
+#define ICE_INVAL_CHAIN_IND 0xFF
+       u16 rid;
+       u8 chain_idx;
+       u16 fv_idx[ICE_NUM_WORDS_RECIPE];
+       struct ice_pref_recipe_group r_group;
+};
+#endif /* _ICE_PROTOCOL_TYPE_H_ */