1 // SPDX-License-Identifier: GPL-2.0-only 2 /* Copyright (C) 2024-2025 Intel Corporation */ 3 4 #define DEFAULT_SYMBOL_NAMESPACE "LIBIE" 5 6 #include <linux/export.h> 7 #include <linux/net/intel/libie/rx.h> 8 9 /* O(1) converting i40e/ice/iavf's 8/10-bit hardware packet type to a parsed 10 * bitfield struct. 11 */ 12 13 /* A few supplementary definitions for when XDP hash types do not coincide 14 * with what can be generated from ptype definitions by means of preprocessor 15 * concatenation. 16 */ 17 #define XDP_RSS_L3_L2 XDP_RSS_TYPE_NONE 18 #define XDP_RSS_L4_NONE XDP_RSS_TYPE_NONE 19 #define XDP_RSS_L4_TIMESYNC XDP_RSS_TYPE_NONE 20 #define XDP_RSS_TYPE_L3 XDP_RSS_TYPE_NONE 21 #define XDP_RSS_TYPE_L4 XDP_RSS_L4 22 23 #define LIBIE_RX_PT(oip, ofrag, tun, tp, tefr, iprot, pl) { \ 24 .outer_ip = LIBETH_RX_PT_OUTER_##oip, \ 25 .outer_frag = LIBETH_RX_PT_##ofrag, \ 26 .tunnel_type = LIBETH_RX_PT_TUNNEL_IP_##tun, \ 27 .tunnel_end_prot = LIBETH_RX_PT_TUNNEL_END_##tp, \ 28 .tunnel_end_frag = LIBETH_RX_PT_##tefr, \ 29 .inner_prot = LIBETH_RX_PT_INNER_##iprot, \ 30 .payload_layer = LIBETH_RX_PT_PAYLOAD_##pl, \ 31 .hash_type = XDP_RSS_L3_##oip | \ 32 XDP_RSS_L4_##iprot | \ 33 XDP_RSS_TYPE_##pl, \ 34 } 35 36 #define LIBIE_RX_PT_UNUSED { } 37 38 #define __LIBIE_RX_PT_L2(iprot, pl) \ 39 LIBIE_RX_PT(L2, NOT_FRAG, NONE, NONE, NOT_FRAG, iprot, pl) 40 #define LIBIE_RX_PT_L2 __LIBIE_RX_PT_L2(NONE, L2) 41 #define LIBIE_RX_PT_TS __LIBIE_RX_PT_L2(TIMESYNC, L2) 42 #define LIBIE_RX_PT_L3 __LIBIE_RX_PT_L2(NONE, L3) 43 44 #define LIBIE_RX_PT_IP_FRAG(oip) \ 45 LIBIE_RX_PT(IPV##oip, FRAG, NONE, NONE, NOT_FRAG, NONE, L3) 46 #define LIBIE_RX_PT_IP_L3(oip, tun, teprot, tefr) \ 47 LIBIE_RX_PT(IPV##oip, NOT_FRAG, tun, teprot, tefr, NONE, L3) 48 #define LIBIE_RX_PT_IP_L4(oip, tun, teprot, iprot) \ 49 LIBIE_RX_PT(IPV##oip, NOT_FRAG, tun, teprot, NOT_FRAG, iprot, L4) 50 51 #define LIBIE_RX_PT_IP_NOF(oip, tun, ver) \ 52 LIBIE_RX_PT_IP_L3(oip, tun, ver, NOT_FRAG), \ 53 LIBIE_RX_PT_IP_L4(oip, tun, ver, UDP), \ 54 LIBIE_RX_PT_UNUSED, \ 55 LIBIE_RX_PT_IP_L4(oip, tun, ver, TCP), \ 56 LIBIE_RX_PT_IP_L4(oip, tun, ver, SCTP), \ 57 LIBIE_RX_PT_IP_L4(oip, tun, ver, ICMP) 58 59 /* IPv oip --> tun --> IPv ver */ 60 #define LIBIE_RX_PT_IP_TUN_VER(oip, tun, ver) \ 61 LIBIE_RX_PT_IP_L3(oip, tun, ver, FRAG), \ 62 LIBIE_RX_PT_IP_NOF(oip, tun, ver) 63 64 /* Non Tunneled IPv oip */ 65 #define LIBIE_RX_PT_IP_RAW(oip) \ 66 LIBIE_RX_PT_IP_FRAG(oip), \ 67 LIBIE_RX_PT_IP_NOF(oip, NONE, NONE) 68 69 /* IPv oip --> tun --> { IPv4, IPv6 } */ 70 #define LIBIE_RX_PT_IP_TUN(oip, tun) \ 71 LIBIE_RX_PT_IP_TUN_VER(oip, tun, IPV4), \ 72 LIBIE_RX_PT_IP_TUN_VER(oip, tun, IPV6) 73 74 /* IPv oip --> GRE/NAT tun --> { x, IPv4, IPv6 } */ 75 #define LIBIE_RX_PT_IP_GRE(oip, tun) \ 76 LIBIE_RX_PT_IP_L3(oip, tun, NONE, NOT_FRAG), \ 77 LIBIE_RX_PT_IP_TUN(oip, tun) 78 79 /* Non Tunneled IPv oip 80 * IPv oip --> { IPv4, IPv6 } 81 * IPv oip --> GRE/NAT --> { x, IPv4, IPv6 } 82 * IPv oip --> GRE/NAT --> MAC --> { x, IPv4, IPv6 } 83 * IPv oip --> GRE/NAT --> MAC/VLAN --> { x, IPv4, IPv6 } 84 */ 85 #define LIBIE_RX_PT_IP(oip) \ 86 LIBIE_RX_PT_IP_RAW(oip), \ 87 LIBIE_RX_PT_IP_TUN(oip, IP), \ 88 LIBIE_RX_PT_IP_GRE(oip, GRENAT), \ 89 LIBIE_RX_PT_IP_GRE(oip, GRENAT_MAC), \ 90 LIBIE_RX_PT_IP_GRE(oip, GRENAT_MAC_VLAN) 91 92 /* Lookup table mapping for O(1) parsing */ 93 const struct libeth_rx_pt libie_rx_pt_lut[LIBIE_RX_PT_NUM] = { 94 /* L2 packet types */ 95 LIBIE_RX_PT_UNUSED, 96 LIBIE_RX_PT_L2, 97 LIBIE_RX_PT_TS, 98 LIBIE_RX_PT_L2, 99 LIBIE_RX_PT_UNUSED, 100 LIBIE_RX_PT_UNUSED, 101 LIBIE_RX_PT_L2, 102 LIBIE_RX_PT_L2, 103 LIBIE_RX_PT_UNUSED, 104 LIBIE_RX_PT_UNUSED, 105 LIBIE_RX_PT_L2, 106 LIBIE_RX_PT_UNUSED, 107 108 LIBIE_RX_PT_L3, 109 LIBIE_RX_PT_L3, 110 LIBIE_RX_PT_L3, 111 LIBIE_RX_PT_L3, 112 LIBIE_RX_PT_L3, 113 LIBIE_RX_PT_L3, 114 LIBIE_RX_PT_L3, 115 LIBIE_RX_PT_L3, 116 LIBIE_RX_PT_L3, 117 LIBIE_RX_PT_L3, 118 119 LIBIE_RX_PT_IP(4), 120 LIBIE_RX_PT_IP(6), 121 }; 122 EXPORT_SYMBOL_GPL(libie_rx_pt_lut); 123 124 MODULE_DESCRIPTION("Intel(R) Ethernet common library"); 125 MODULE_IMPORT_NS("LIBETH"); 126 MODULE_LICENSE("GPL"); 127