1 // SPDX-License-Identifier: GPL-2.0-only
2 /* Copyright (C) 2020 Felix Fietkau <nbd@nbd.name> */
7 #include <linux/kernel.h>
8 #include <linux/bitfield.h>
9 #include <linux/rhashtable.h>
11 #define MTK_PPE_ENTRIES_SHIFT 3
12 #define MTK_PPE_ENTRIES (1024 << MTK_PPE_ENTRIES_SHIFT)
13 #define MTK_PPE_HASH_MASK (MTK_PPE_ENTRIES - 1)
14 #define MTK_PPE_WAIT_TIMEOUT_US 1000000
16 #define MTK_FOE_IB1_UNBIND_TIMESTAMP GENMASK(7, 0)
17 #define MTK_FOE_IB1_UNBIND_PACKETS GENMASK(23, 8)
18 #define MTK_FOE_IB1_UNBIND_PREBIND BIT(24)
20 #define MTK_FOE_IB1_BIND_TIMESTAMP GENMASK(14, 0)
21 #define MTK_FOE_IB1_BIND_KEEPALIVE BIT(15)
22 #define MTK_FOE_IB1_BIND_VLAN_LAYER GENMASK(18, 16)
23 #define MTK_FOE_IB1_BIND_PPPOE BIT(19)
24 #define MTK_FOE_IB1_BIND_VLAN_TAG BIT(20)
25 #define MTK_FOE_IB1_BIND_PKT_SAMPLE BIT(21)
26 #define MTK_FOE_IB1_BIND_CACHE BIT(22)
27 #define MTK_FOE_IB1_BIND_TUNNEL_DECAP BIT(23)
28 #define MTK_FOE_IB1_BIND_TTL BIT(24)
30 #define MTK_FOE_IB1_PACKET_TYPE GENMASK(27, 25)
31 #define MTK_FOE_IB1_STATE GENMASK(29, 28)
32 #define MTK_FOE_IB1_UDP BIT(30)
33 #define MTK_FOE_IB1_STATIC BIT(31)
35 /* CONFIG_MEDIATEK_NETSYS_V2 */
36 #define MTK_FOE_IB1_BIND_TIMESTAMP_V2 GENMASK(7, 0)
37 #define MTK_FOE_IB1_BIND_VLAN_LAYER_V2 GENMASK(16, 14)
38 #define MTK_FOE_IB1_BIND_PPPOE_V2 BIT(17)
39 #define MTK_FOE_IB1_BIND_VLAN_TAG_V2 BIT(18)
40 #define MTK_FOE_IB1_BIND_CACHE_V2 BIT(20)
41 #define MTK_FOE_IB1_BIND_TTL_V2 BIT(22)
42 #define MTK_FOE_IB1_PACKET_TYPE_V2 GENMASK(27, 23)
45 MTK_PPE_PKT_TYPE_IPV4_HNAPT = 0,
46 MTK_PPE_PKT_TYPE_IPV4_ROUTE = 1,
47 MTK_PPE_PKT_TYPE_BRIDGE = 2,
48 MTK_PPE_PKT_TYPE_IPV4_DSLITE = 3,
49 MTK_PPE_PKT_TYPE_IPV6_ROUTE_3T = 4,
50 MTK_PPE_PKT_TYPE_IPV6_ROUTE_5T = 5,
51 MTK_PPE_PKT_TYPE_IPV6_6RD = 7,
54 #define MTK_FOE_IB2_QID GENMASK(3, 0)
55 #define MTK_FOE_IB2_PSE_QOS BIT(4)
56 #define MTK_FOE_IB2_DEST_PORT GENMASK(7, 5)
57 #define MTK_FOE_IB2_MULTICAST BIT(8)
59 #define MTK_FOE_IB2_WDMA_QID2 GENMASK(13, 12)
60 #define MTK_FOE_IB2_WDMA_DEVIDX BIT(16)
61 #define MTK_FOE_IB2_WDMA_WINFO BIT(17)
63 #define MTK_FOE_IB2_PORT_MG GENMASK(17, 12)
65 #define MTK_FOE_IB2_RX_IDX GENMASK(18, 17)
66 #define MTK_FOE_IB2_PORT_AG GENMASK(23, 18)
68 #define MTK_FOE_IB2_DSCP GENMASK(31, 24)
70 /* CONFIG_MEDIATEK_NETSYS_V2 */
71 #define MTK_FOE_IB2_QID_V2 GENMASK(6, 0)
72 #define MTK_FOE_IB2_PORT_MG_V2 BIT(7)
73 #define MTK_FOE_IB2_PSE_QOS_V2 BIT(8)
74 #define MTK_FOE_IB2_DEST_PORT_V2 GENMASK(12, 9)
75 #define MTK_FOE_IB2_MULTICAST_V2 BIT(13)
76 #define MTK_FOE_IB2_WDMA_WINFO_V2 BIT(19)
77 #define MTK_FOE_IB2_PORT_AG_V2 GENMASK(23, 20)
79 #define MTK_FOE_VLAN2_WINFO_BSS GENMASK(5, 0)
80 #define MTK_FOE_VLAN2_WINFO_WCID GENMASK(13, 6)
81 #define MTK_FOE_VLAN2_WINFO_RING GENMASK(15, 14)
83 #define MTK_FOE_WINFO_BSS GENMASK(5, 0)
84 #define MTK_FOE_WINFO_WCID GENMASK(15, 6)
87 MTK_FOE_STATE_INVALID,
93 struct mtk_foe_mac_info {
111 /* software-only entry type */
112 struct mtk_foe_bridge {
113 u8 dest_mac[ETH_ALEN];
114 u8 src_mac[ETH_ALEN];
121 struct mtk_foe_mac_info l2;
124 struct mtk_ipv4_tuple {
134 u8 _pad[3]; /* fill with 0xa5a5a5 */
140 struct mtk_foe_ipv4 {
141 struct mtk_ipv4_tuple orig;
145 struct mtk_ipv4_tuple new;
152 struct mtk_foe_mac_info l2;
155 struct mtk_foe_ipv4_dslite {
156 struct mtk_ipv4_tuple ip4;
158 u32 tunnel_src_ip[4];
159 u32 tunnel_dest_ip[4];
168 struct mtk_foe_mac_info l2;
171 struct mtk_foe_ipv6 {
178 u8 _pad[3]; /* fill with 0xa5a5a5 */
192 struct mtk_foe_mac_info l2;
195 struct mtk_foe_ipv6_6rd {
214 struct mtk_foe_mac_info l2;
217 struct mtk_foe_entry {
221 struct mtk_foe_bridge bridge;
222 struct mtk_foe_ipv4 ipv4;
223 struct mtk_foe_ipv4_dslite dslite;
224 struct mtk_foe_ipv6 ipv6;
225 struct mtk_foe_ipv6_6rd ipv6_6rd;
231 MTK_PPE_CPU_REASON_TTL_EXCEEDED = 0x02,
232 MTK_PPE_CPU_REASON_OPTION_HEADER = 0x03,
233 MTK_PPE_CPU_REASON_NO_FLOW = 0x07,
234 MTK_PPE_CPU_REASON_IPV4_FRAG = 0x08,
235 MTK_PPE_CPU_REASON_IPV4_DSLITE_FRAG = 0x09,
236 MTK_PPE_CPU_REASON_IPV4_DSLITE_NO_TCP_UDP = 0x0a,
237 MTK_PPE_CPU_REASON_IPV6_6RD_NO_TCP_UDP = 0x0b,
238 MTK_PPE_CPU_REASON_TCP_FIN_SYN_RST = 0x0c,
239 MTK_PPE_CPU_REASON_UN_HIT = 0x0d,
240 MTK_PPE_CPU_REASON_HIT_UNBIND = 0x0e,
241 MTK_PPE_CPU_REASON_HIT_UNBIND_RATE_REACHED = 0x0f,
242 MTK_PPE_CPU_REASON_HIT_BIND_TCP_FIN = 0x10,
243 MTK_PPE_CPU_REASON_HIT_TTL_1 = 0x11,
244 MTK_PPE_CPU_REASON_HIT_BIND_VLAN_VIOLATION = 0x12,
245 MTK_PPE_CPU_REASON_KEEPALIVE_UC_OLD_HDR = 0x13,
246 MTK_PPE_CPU_REASON_KEEPALIVE_MC_NEW_HDR = 0x14,
247 MTK_PPE_CPU_REASON_KEEPALIVE_DUP_OLD_HDR = 0x15,
248 MTK_PPE_CPU_REASON_HIT_BIND_FORCE_CPU = 0x16,
249 MTK_PPE_CPU_REASON_TUNNEL_OPTION_HEADER = 0x17,
250 MTK_PPE_CPU_REASON_MULTICAST_TO_CPU = 0x18,
251 MTK_PPE_CPU_REASON_MULTICAST_TO_GMAC1_CPU = 0x19,
252 MTK_PPE_CPU_REASON_HIT_PRE_BIND = 0x1a,
253 MTK_PPE_CPU_REASON_PACKET_SAMPLING = 0x1b,
254 MTK_PPE_CPU_REASON_EXCEED_MTU = 0x1c,
255 MTK_PPE_CPU_REASON_PPE_BYPASS = 0x1e,
256 MTK_PPE_CPU_REASON_INVALID = 0x1f,
262 MTK_FLOW_TYPE_L2_SUBFLOW,
265 struct mtk_flow_entry {
267 struct hlist_node list;
269 struct rhash_head l2_node;
270 struct hlist_head l2_flows;
278 struct mtk_foe_entry data;
280 struct mtk_flow_entry *base_flow;
281 struct hlist_node list;
285 struct rhash_head node;
286 unsigned long cookie;
299 u16 foe_check_time[MTK_PPE_ENTRIES];
300 struct hlist_head *foe_flow;
302 struct rhashtable l2_flows;
307 struct mtk_ppe *mtk_ppe_init(struct mtk_eth *eth, void __iomem *base,
308 int version, int index);
309 void mtk_ppe_deinit(struct mtk_eth *eth);
310 void mtk_ppe_start(struct mtk_ppe *ppe);
311 int mtk_ppe_stop(struct mtk_ppe *ppe);
313 void __mtk_ppe_check_skb(struct mtk_ppe *ppe, struct sk_buff *skb, u16 hash);
316 mtk_ppe_check_skb(struct mtk_ppe *ppe, struct sk_buff *skb, u16 hash)
323 if (hash > MTK_PPE_HASH_MASK)
327 diff = now - ppe->foe_check_time[hash];
331 ppe->foe_check_time[hash] = now;
332 __mtk_ppe_check_skb(ppe, skb, hash);
335 int mtk_foe_entry_prepare(struct mtk_eth *eth, struct mtk_foe_entry *entry,
336 int type, int l4proto, u8 pse_port, u8 *src_mac,
338 int mtk_foe_entry_set_pse_port(struct mtk_eth *eth,
339 struct mtk_foe_entry *entry, u8 port);
340 int mtk_foe_entry_set_ipv4_tuple(struct mtk_eth *eth,
341 struct mtk_foe_entry *entry, bool orig,
342 __be32 src_addr, __be16 src_port,
343 __be32 dest_addr, __be16 dest_port);
344 int mtk_foe_entry_set_ipv6_tuple(struct mtk_eth *eth,
345 struct mtk_foe_entry *entry,
346 __be32 *src_addr, __be16 src_port,
347 __be32 *dest_addr, __be16 dest_port);
348 int mtk_foe_entry_set_dsa(struct mtk_eth *eth, struct mtk_foe_entry *entry,
350 int mtk_foe_entry_set_vlan(struct mtk_eth *eth, struct mtk_foe_entry *entry,
352 int mtk_foe_entry_set_pppoe(struct mtk_eth *eth, struct mtk_foe_entry *entry,
354 int mtk_foe_entry_set_wdma(struct mtk_eth *eth, struct mtk_foe_entry *entry,
355 int wdma_idx, int txq, int bss, int wcid);
356 int mtk_foe_entry_set_queue(struct mtk_eth *eth, struct mtk_foe_entry *entry,
358 int mtk_foe_entry_commit(struct mtk_ppe *ppe, struct mtk_flow_entry *entry);
359 void mtk_foe_entry_clear(struct mtk_ppe *ppe, struct mtk_flow_entry *entry);
360 int mtk_foe_entry_idle_time(struct mtk_ppe *ppe, struct mtk_flow_entry *entry);
361 int mtk_ppe_debugfs_init(struct mtk_ppe *ppe, int index);