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// SPDX-License-Identifier: GPL-2.0-only
/* Copyright (C) 2024 Intel Corporation */
#include <linux/net/intel/libie/rx.h>
/* O(1) converting i40e/ice/iavf's 8/10-bit hardware packet type to a parsed
* bitfield struct.
*/
/* A few supplementary definitions for when XDP hash types do not coincide
* with what can be generated from ptype definitions by means of preprocessor
* concatenation.
*/
#define XDP_RSS_L3_L2 XDP_RSS_TYPE_NONE
#define XDP_RSS_L4_NONE XDP_RSS_TYPE_NONE
#define XDP_RSS_L4_TIMESYNC XDP_RSS_TYPE_NONE
#define XDP_RSS_TYPE_L3 XDP_RSS_TYPE_NONE
#define XDP_RSS_TYPE_L4 XDP_RSS_L4
#define LIBIE_RX_PT(oip, ofrag, tun, tp, tefr, iprot, pl) { \
.outer_ip = LIBETH_RX_PT_OUTER_##oip, \
.outer_frag = LIBETH_RX_PT_##ofrag, \
.tunnel_type = LIBETH_RX_PT_TUNNEL_IP_##tun, \
.tunnel_end_prot = LIBETH_RX_PT_TUNNEL_END_##tp, \
.tunnel_end_frag = LIBETH_RX_PT_##tefr, \
.inner_prot = LIBETH_RX_PT_INNER_##iprot, \
.payload_layer = LIBETH_RX_PT_PAYLOAD_##pl, \
.hash_type = XDP_RSS_L3_##oip | \
XDP_RSS_L4_##iprot | \
XDP_RSS_TYPE_##pl, \
}
#define LIBIE_RX_PT_UNUSED { }
#define __LIBIE_RX_PT_L2(iprot, pl) \
LIBIE_RX_PT(L2, NOT_FRAG, NONE, NONE, NOT_FRAG, iprot, pl)
#define LIBIE_RX_PT_L2 __LIBIE_RX_PT_L2(NONE, L2)
#define LIBIE_RX_PT_TS __LIBIE_RX_PT_L2(TIMESYNC, L2)
#define LIBIE_RX_PT_L3 __LIBIE_RX_PT_L2(NONE, L3)
#define LIBIE_RX_PT_IP_FRAG(oip) \
LIBIE_RX_PT(IPV##oip, FRAG, NONE, NONE, NOT_FRAG, NONE, L3)
#define LIBIE_RX_PT_IP_L3(oip, tun, teprot, tefr) \
LIBIE_RX_PT(IPV##oip, NOT_FRAG, tun, teprot, tefr, NONE, L3)
#define LIBIE_RX_PT_IP_L4(oip, tun, teprot, iprot) \
LIBIE_RX_PT(IPV##oip, NOT_FRAG, tun, teprot, NOT_FRAG, iprot, L4)
#define LIBIE_RX_PT_IP_NOF(oip, tun, ver) \
LIBIE_RX_PT_IP_L3(oip, tun, ver, NOT_FRAG), \
LIBIE_RX_PT_IP_L4(oip, tun, ver, UDP), \
LIBIE_RX_PT_UNUSED, \
LIBIE_RX_PT_IP_L4(oip, tun, ver, TCP), \
LIBIE_RX_PT_IP_L4(oip, tun, ver, SCTP), \
LIBIE_RX_PT_IP_L4(oip, tun, ver, ICMP)
/* IPv oip --> tun --> IPv ver */
#define LIBIE_RX_PT_IP_TUN_VER(oip, tun, ver) \
LIBIE_RX_PT_IP_L3(oip, tun, ver, FRAG), \
LIBIE_RX_PT_IP_NOF(oip, tun, ver)
/* Non Tunneled IPv oip */
#define LIBIE_RX_PT_IP_RAW(oip) \
LIBIE_RX_PT_IP_FRAG(oip), \
LIBIE_RX_PT_IP_NOF(oip, NONE, NONE)
/* IPv oip --> tun --> { IPv4, IPv6 } */
#define LIBIE_RX_PT_IP_TUN(oip, tun) \
LIBIE_RX_PT_IP_TUN_VER(oip, tun, IPV4), \
LIBIE_RX_PT_IP_TUN_VER(oip, tun, IPV6)
/* IPv oip --> GRE/NAT tun --> { x, IPv4, IPv6 } */
#define LIBIE_RX_PT_IP_GRE(oip, tun) \
LIBIE_RX_PT_IP_L3(oip, tun, NONE, NOT_FRAG), \
LIBIE_RX_PT_IP_TUN(oip, tun)
/* Non Tunneled IPv oip
* IPv oip --> { IPv4, IPv6 }
* IPv oip --> GRE/NAT --> { x, IPv4, IPv6 }
* IPv oip --> GRE/NAT --> MAC --> { x, IPv4, IPv6 }
* IPv oip --> GRE/NAT --> MAC/VLAN --> { x, IPv4, IPv6 }
*/
#define LIBIE_RX_PT_IP(oip) \
LIBIE_RX_PT_IP_RAW(oip), \
LIBIE_RX_PT_IP_TUN(oip, IP), \
LIBIE_RX_PT_IP_GRE(oip, GRENAT), \
LIBIE_RX_PT_IP_GRE(oip, GRENAT_MAC), \
LIBIE_RX_PT_IP_GRE(oip, GRENAT_MAC_VLAN)
/* Lookup table mapping for O(1) parsing */
const struct libeth_rx_pt libie_rx_pt_lut[LIBIE_RX_PT_NUM] = {
/* L2 packet types */
LIBIE_RX_PT_UNUSED,
LIBIE_RX_PT_L2,
LIBIE_RX_PT_TS,
LIBIE_RX_PT_L2,
LIBIE_RX_PT_UNUSED,
LIBIE_RX_PT_UNUSED,
LIBIE_RX_PT_L2,
LIBIE_RX_PT_L2,
LIBIE_RX_PT_UNUSED,
LIBIE_RX_PT_UNUSED,
LIBIE_RX_PT_L2,
LIBIE_RX_PT_UNUSED,
LIBIE_RX_PT_L3,
LIBIE_RX_PT_L3,
LIBIE_RX_PT_L3,
LIBIE_RX_PT_L3,
LIBIE_RX_PT_L3,
LIBIE_RX_PT_L3,
LIBIE_RX_PT_L3,
LIBIE_RX_PT_L3,
LIBIE_RX_PT_L3,
LIBIE_RX_PT_L3,
LIBIE_RX_PT_IP(4),
LIBIE_RX_PT_IP(6),
};
EXPORT_SYMBOL_NS_GPL(libie_rx_pt_lut, "LIBIE");
MODULE_DESCRIPTION("Intel(R) Ethernet common library");
MODULE_IMPORT_NS("LIBETH");
MODULE_LICENSE("GPL");
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