364 lines
8.4 KiB
C
364 lines
8.4 KiB
C
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// SPDX-License-Identifier: GPL-2.0-only
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/* Copyright (C) 2020 Felix Fietkau <nbd@nbd.name> */
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#ifndef __MTK_PPE_H
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#define __MTK_PPE_H
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#include <linux/kernel.h>
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#include <linux/bitfield.h>
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#include <linux/rhashtable.h>
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#define MTK_PPE_ENTRIES_SHIFT 3
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#define MTK_PPE_ENTRIES (1024 << MTK_PPE_ENTRIES_SHIFT)
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#define MTK_PPE_HASH_MASK (MTK_PPE_ENTRIES - 1)
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#define MTK_PPE_WAIT_TIMEOUT_US 1000000
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#define MTK_FOE_IB1_UNBIND_TIMESTAMP GENMASK(7, 0)
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#define MTK_FOE_IB1_UNBIND_PACKETS GENMASK(23, 8)
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#define MTK_FOE_IB1_UNBIND_PREBIND BIT(24)
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#define MTK_FOE_IB1_BIND_TIMESTAMP GENMASK(14, 0)
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#define MTK_FOE_IB1_BIND_KEEPALIVE BIT(15)
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#define MTK_FOE_IB1_BIND_VLAN_LAYER GENMASK(18, 16)
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#define MTK_FOE_IB1_BIND_PPPOE BIT(19)
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#define MTK_FOE_IB1_BIND_VLAN_TAG BIT(20)
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#define MTK_FOE_IB1_BIND_PKT_SAMPLE BIT(21)
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#define MTK_FOE_IB1_BIND_CACHE BIT(22)
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#define MTK_FOE_IB1_BIND_TUNNEL_DECAP BIT(23)
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#define MTK_FOE_IB1_BIND_TTL BIT(24)
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#define MTK_FOE_IB1_PACKET_TYPE GENMASK(27, 25)
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#define MTK_FOE_IB1_STATE GENMASK(29, 28)
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#define MTK_FOE_IB1_UDP BIT(30)
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#define MTK_FOE_IB1_STATIC BIT(31)
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/* CONFIG_MEDIATEK_NETSYS_V2 */
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#define MTK_FOE_IB1_BIND_TIMESTAMP_V2 GENMASK(7, 0)
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#define MTK_FOE_IB1_BIND_VLAN_LAYER_V2 GENMASK(16, 14)
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#define MTK_FOE_IB1_BIND_PPPOE_V2 BIT(17)
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#define MTK_FOE_IB1_BIND_VLAN_TAG_V2 BIT(18)
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#define MTK_FOE_IB1_BIND_CACHE_V2 BIT(20)
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#define MTK_FOE_IB1_BIND_TTL_V2 BIT(22)
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#define MTK_FOE_IB1_PACKET_TYPE_V2 GENMASK(27, 23)
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enum {
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MTK_PPE_PKT_TYPE_IPV4_HNAPT = 0,
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MTK_PPE_PKT_TYPE_IPV4_ROUTE = 1,
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MTK_PPE_PKT_TYPE_BRIDGE = 2,
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MTK_PPE_PKT_TYPE_IPV4_DSLITE = 3,
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MTK_PPE_PKT_TYPE_IPV6_ROUTE_3T = 4,
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MTK_PPE_PKT_TYPE_IPV6_ROUTE_5T = 5,
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MTK_PPE_PKT_TYPE_IPV6_6RD = 7,
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};
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#define MTK_FOE_IB2_QID GENMASK(3, 0)
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#define MTK_FOE_IB2_PSE_QOS BIT(4)
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#define MTK_FOE_IB2_DEST_PORT GENMASK(7, 5)
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#define MTK_FOE_IB2_MULTICAST BIT(8)
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#define MTK_FOE_IB2_WDMA_QID2 GENMASK(13, 12)
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#define MTK_FOE_IB2_WDMA_DEVIDX BIT(16)
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#define MTK_FOE_IB2_WDMA_WINFO BIT(17)
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#define MTK_FOE_IB2_PORT_MG GENMASK(17, 12)
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#define MTK_FOE_IB2_RX_IDX GENMASK(18, 17)
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#define MTK_FOE_IB2_PORT_AG GENMASK(23, 18)
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#define MTK_FOE_IB2_DSCP GENMASK(31, 24)
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/* CONFIG_MEDIATEK_NETSYS_V2 */
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#define MTK_FOE_IB2_QID_V2 GENMASK(6, 0)
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#define MTK_FOE_IB2_PORT_MG_V2 BIT(7)
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#define MTK_FOE_IB2_PSE_QOS_V2 BIT(8)
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#define MTK_FOE_IB2_DEST_PORT_V2 GENMASK(12, 9)
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#define MTK_FOE_IB2_MULTICAST_V2 BIT(13)
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#define MTK_FOE_IB2_WDMA_WINFO_V2 BIT(19)
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#define MTK_FOE_IB2_PORT_AG_V2 GENMASK(23, 20)
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#define MTK_FOE_VLAN2_WINFO_BSS GENMASK(5, 0)
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#define MTK_FOE_VLAN2_WINFO_WCID GENMASK(13, 6)
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#define MTK_FOE_VLAN2_WINFO_RING GENMASK(15, 14)
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#define MTK_FOE_WINFO_BSS GENMASK(5, 0)
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#define MTK_FOE_WINFO_WCID GENMASK(15, 6)
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enum {
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MTK_FOE_STATE_INVALID,
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MTK_FOE_STATE_UNBIND,
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MTK_FOE_STATE_BIND,
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MTK_FOE_STATE_FIN
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};
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struct mtk_foe_mac_info {
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u16 vlan1;
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u16 etype;
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u32 dest_mac_hi;
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u16 vlan2;
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u16 dest_mac_lo;
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u32 src_mac_hi;
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u16 pppoe_id;
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u16 src_mac_lo;
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u16 minfo;
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u16 winfo;
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};
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/* software-only entry type */
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struct mtk_foe_bridge {
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u8 dest_mac[ETH_ALEN];
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u8 src_mac[ETH_ALEN];
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u16 vlan;
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struct {} key_end;
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u32 ib2;
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struct mtk_foe_mac_info l2;
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};
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struct mtk_ipv4_tuple {
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u32 src_ip;
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u32 dest_ip;
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union {
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struct {
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u16 dest_port;
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u16 src_port;
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};
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struct {
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u8 protocol;
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u8 _pad[3]; /* fill with 0xa5a5a5 */
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};
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u32 ports;
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};
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};
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struct mtk_foe_ipv4 {
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struct mtk_ipv4_tuple orig;
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u32 ib2;
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struct mtk_ipv4_tuple new;
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u16 timestamp;
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u16 _rsv0[3];
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u32 udf_tsid;
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struct mtk_foe_mac_info l2;
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};
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struct mtk_foe_ipv4_dslite {
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struct mtk_ipv4_tuple ip4;
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u32 tunnel_src_ip[4];
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u32 tunnel_dest_ip[4];
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u8 flow_label[3];
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u8 priority;
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u32 udf_tsid;
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u32 ib2;
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struct mtk_foe_mac_info l2;
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};
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struct mtk_foe_ipv6 {
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u32 src_ip[4];
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u32 dest_ip[4];
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union {
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struct {
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u8 protocol;
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u8 _pad[3]; /* fill with 0xa5a5a5 */
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}; /* 3-tuple */
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struct {
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u16 dest_port;
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u16 src_port;
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}; /* 5-tuple */
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u32 ports;
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};
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u32 _rsv[3];
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u32 udf;
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u32 ib2;
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struct mtk_foe_mac_info l2;
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};
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struct mtk_foe_ipv6_6rd {
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u32 src_ip[4];
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u32 dest_ip[4];
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u16 dest_port;
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u16 src_port;
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u32 tunnel_src_ip;
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u32 tunnel_dest_ip;
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u16 hdr_csum;
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u8 dscp;
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u8 ttl;
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u8 flag;
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u8 pad;
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u8 per_flow_6rd_id;
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u8 pad2;
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u32 ib2;
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struct mtk_foe_mac_info l2;
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};
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struct mtk_foe_entry {
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u32 ib1;
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union {
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struct mtk_foe_bridge bridge;
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struct mtk_foe_ipv4 ipv4;
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struct mtk_foe_ipv4_dslite dslite;
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struct mtk_foe_ipv6 ipv6;
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struct mtk_foe_ipv6_6rd ipv6_6rd;
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u32 data[23];
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};
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};
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enum {
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MTK_PPE_CPU_REASON_TTL_EXCEEDED = 0x02,
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MTK_PPE_CPU_REASON_OPTION_HEADER = 0x03,
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MTK_PPE_CPU_REASON_NO_FLOW = 0x07,
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MTK_PPE_CPU_REASON_IPV4_FRAG = 0x08,
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MTK_PPE_CPU_REASON_IPV4_DSLITE_FRAG = 0x09,
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MTK_PPE_CPU_REASON_IPV4_DSLITE_NO_TCP_UDP = 0x0a,
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MTK_PPE_CPU_REASON_IPV6_6RD_NO_TCP_UDP = 0x0b,
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MTK_PPE_CPU_REASON_TCP_FIN_SYN_RST = 0x0c,
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MTK_PPE_CPU_REASON_UN_HIT = 0x0d,
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MTK_PPE_CPU_REASON_HIT_UNBIND = 0x0e,
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MTK_PPE_CPU_REASON_HIT_UNBIND_RATE_REACHED = 0x0f,
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MTK_PPE_CPU_REASON_HIT_BIND_TCP_FIN = 0x10,
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MTK_PPE_CPU_REASON_HIT_TTL_1 = 0x11,
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MTK_PPE_CPU_REASON_HIT_BIND_VLAN_VIOLATION = 0x12,
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MTK_PPE_CPU_REASON_KEEPALIVE_UC_OLD_HDR = 0x13,
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MTK_PPE_CPU_REASON_KEEPALIVE_MC_NEW_HDR = 0x14,
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MTK_PPE_CPU_REASON_KEEPALIVE_DUP_OLD_HDR = 0x15,
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MTK_PPE_CPU_REASON_HIT_BIND_FORCE_CPU = 0x16,
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MTK_PPE_CPU_REASON_TUNNEL_OPTION_HEADER = 0x17,
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MTK_PPE_CPU_REASON_MULTICAST_TO_CPU = 0x18,
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MTK_PPE_CPU_REASON_MULTICAST_TO_GMAC1_CPU = 0x19,
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MTK_PPE_CPU_REASON_HIT_PRE_BIND = 0x1a,
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MTK_PPE_CPU_REASON_PACKET_SAMPLING = 0x1b,
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MTK_PPE_CPU_REASON_EXCEED_MTU = 0x1c,
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MTK_PPE_CPU_REASON_PPE_BYPASS = 0x1e,
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MTK_PPE_CPU_REASON_INVALID = 0x1f,
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};
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enum {
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MTK_FLOW_TYPE_L4,
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MTK_FLOW_TYPE_L2,
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MTK_FLOW_TYPE_L2_SUBFLOW,
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};
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struct mtk_flow_entry {
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union {
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struct hlist_node list;
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struct {
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struct rhash_head l2_node;
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struct hlist_head l2_flows;
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};
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};
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u8 type;
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s8 wed_index;
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u8 ppe_index;
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u16 hash;
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union {
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struct mtk_foe_entry data;
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struct {
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struct mtk_flow_entry *base_flow;
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struct hlist_node list;
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} l2_data;
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};
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struct rhash_head node;
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unsigned long cookie;
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};
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struct mtk_ppe {
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struct mtk_eth *eth;
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struct device *dev;
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void __iomem *base;
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int version;
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char dirname[5];
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void *foe_table;
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dma_addr_t foe_phys;
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u16 foe_check_time[MTK_PPE_ENTRIES];
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struct hlist_head *foe_flow;
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struct rhashtable l2_flows;
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void *acct_table;
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};
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struct mtk_ppe *mtk_ppe_init(struct mtk_eth *eth, void __iomem *base,
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int version, int index);
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void mtk_ppe_deinit(struct mtk_eth *eth);
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void mtk_ppe_start(struct mtk_ppe *ppe);
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int mtk_ppe_stop(struct mtk_ppe *ppe);
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int mtk_ppe_prepare_reset(struct mtk_ppe *ppe);
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void __mtk_ppe_check_skb(struct mtk_ppe *ppe, struct sk_buff *skb, u16 hash);
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static inline void
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mtk_ppe_check_skb(struct mtk_ppe *ppe, struct sk_buff *skb, u16 hash)
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{
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u16 now, diff;
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if (!ppe)
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return;
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if (hash > MTK_PPE_HASH_MASK)
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return;
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now = (u16)jiffies;
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diff = now - ppe->foe_check_time[hash];
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if (diff < HZ / 10)
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return;
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ppe->foe_check_time[hash] = now;
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__mtk_ppe_check_skb(ppe, skb, hash);
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}
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int mtk_foe_entry_prepare(struct mtk_eth *eth, struct mtk_foe_entry *entry,
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int type, int l4proto, u8 pse_port, u8 *src_mac,
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u8 *dest_mac);
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int mtk_foe_entry_set_pse_port(struct mtk_eth *eth,
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struct mtk_foe_entry *entry, u8 port);
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int mtk_foe_entry_set_ipv4_tuple(struct mtk_eth *eth,
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struct mtk_foe_entry *entry, bool orig,
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__be32 src_addr, __be16 src_port,
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__be32 dest_addr, __be16 dest_port);
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int mtk_foe_entry_set_ipv6_tuple(struct mtk_eth *eth,
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||
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struct mtk_foe_entry *entry,
|
||
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__be32 *src_addr, __be16 src_port,
|
||
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|
__be32 *dest_addr, __be16 dest_port);
|
||
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int mtk_foe_entry_set_dsa(struct mtk_eth *eth, struct mtk_foe_entry *entry,
|
||
|
|
int port);
|
||
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|
int mtk_foe_entry_set_vlan(struct mtk_eth *eth, struct mtk_foe_entry *entry,
|
||
|
|
int vid);
|
||
|
|
int mtk_foe_entry_set_pppoe(struct mtk_eth *eth, struct mtk_foe_entry *entry,
|
||
|
|
int sid);
|
||
|
|
int mtk_foe_entry_set_wdma(struct mtk_eth *eth, struct mtk_foe_entry *entry,
|
||
|
|
int wdma_idx, int txq, int bss, int wcid);
|
||
|
|
int mtk_foe_entry_set_queue(struct mtk_eth *eth, struct mtk_foe_entry *entry,
|
||
|
|
unsigned int queue);
|
||
|
|
int mtk_foe_entry_commit(struct mtk_ppe *ppe, struct mtk_flow_entry *entry);
|
||
|
|
void mtk_foe_entry_clear(struct mtk_ppe *ppe, struct mtk_flow_entry *entry);
|
||
|
|
int mtk_foe_entry_idle_time(struct mtk_ppe *ppe, struct mtk_flow_entry *entry);
|
||
|
|
int mtk_ppe_debugfs_init(struct mtk_ppe *ppe, int index);
|
||
|
|
|
||
|
|
#endif
|