1/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */
  2/* Microsemi Ocelot Switch driver
  3 * Copyright (c) 2019 Microsemi Corporation
  4 */
  5
  6#ifndef _MSCC_OCELOT_VCAP_H_
  7#define _MSCC_OCELOT_VCAP_H_
  8
  9#include "ocelot.h"
 10#include "ocelot_police.h"
 11#include <net/sch_generic.h>
 12#include <net/pkt_cls.h>
 13
 14struct ocelot_ipv4 {
 15	u8 addr[4];
 16};
 17
 18enum ocelot_vcap_bit {
 19	OCELOT_VCAP_BIT_ANY,
 20	OCELOT_VCAP_BIT_0,
 21	OCELOT_VCAP_BIT_1
 22};
 23
 24struct ocelot_vcap_u8 {
 25	u8 value[1];
 26	u8 mask[1];
 27};
 28
 29struct ocelot_vcap_u16 {
 30	u8 value[2];
 31	u8 mask[2];
 32};
 33
 34struct ocelot_vcap_u24 {
 35	u8 value[3];
 36	u8 mask[3];
 37};
 38
 39struct ocelot_vcap_u32 {
 40	u8 value[4];
 41	u8 mask[4];
 42};
 43
 44struct ocelot_vcap_u40 {
 45	u8 value[5];
 46	u8 mask[5];
 47};
 48
 49struct ocelot_vcap_u48 {
 50	u8 value[6];
 51	u8 mask[6];
 52};
 53
 54struct ocelot_vcap_u64 {
 55	u8 value[8];
 56	u8 mask[8];
 57};
 58
 59struct ocelot_vcap_u128 {
 60	u8 value[16];
 61	u8 mask[16];
 62};
 63
 64struct ocelot_vcap_vid {
 65	u16 value;
 66	u16 mask;
 67};
 68
 69struct ocelot_vcap_ipv4 {
 70	struct ocelot_ipv4 value;
 71	struct ocelot_ipv4 mask;
 72};
 73
 74struct ocelot_vcap_udp_tcp {
 75	u16 value;
 76	u16 mask;
 77};
 78
 79enum ocelot_vcap_key_type {
 80	OCELOT_VCAP_KEY_ANY,
 81	OCELOT_VCAP_KEY_ETYPE,
 82	OCELOT_VCAP_KEY_LLC,
 83	OCELOT_VCAP_KEY_SNAP,
 84	OCELOT_VCAP_KEY_ARP,
 85	OCELOT_VCAP_KEY_IPV4,
 86	OCELOT_VCAP_KEY_IPV6
 87};
 88
 89struct ocelot_vcap_key_vlan {
 90	struct ocelot_vcap_vid vid;    /* VLAN ID (12 bit) */
 91	struct ocelot_vcap_u8  pcp;    /* PCP (3 bit) */
 92	enum ocelot_vcap_bit dei;    /* DEI */
 93	enum ocelot_vcap_bit tagged; /* Tagged/untagged frame */
 94};
 95
 96struct ocelot_vcap_key_etype {
 97	struct ocelot_vcap_u48 dmac;
 98	struct ocelot_vcap_u48 smac;
 99	struct ocelot_vcap_u16 etype;
100	struct ocelot_vcap_u16 data; /* MAC data */
101};
102
103struct ocelot_vcap_key_llc {
104	struct ocelot_vcap_u48 dmac;
105	struct ocelot_vcap_u48 smac;
106
107	/* LLC header: DSAP at byte 0, SSAP at byte 1, Control at byte 2 */
108	struct ocelot_vcap_u32 llc;
109};
110
111struct ocelot_vcap_key_snap {
112	struct ocelot_vcap_u48 dmac;
113	struct ocelot_vcap_u48 smac;
114
115	/* SNAP header: Organization Code at byte 0, Type at byte 3 */
116	struct ocelot_vcap_u40 snap;
117};
118
119struct ocelot_vcap_key_arp {
120	struct ocelot_vcap_u48 smac;
121	enum ocelot_vcap_bit arp;	/* Opcode ARP/RARP */
122	enum ocelot_vcap_bit req;	/* Opcode request/reply */
123	enum ocelot_vcap_bit unknown;    /* Opcode unknown */
124	enum ocelot_vcap_bit smac_match; /* Sender MAC matches SMAC */
125	enum ocelot_vcap_bit dmac_match; /* Target MAC matches DMAC */
126
127	/**< Protocol addr. length 4, hardware length 6 */
128	enum ocelot_vcap_bit length;
129
130	enum ocelot_vcap_bit ip;       /* Protocol address type IP */
131	enum  ocelot_vcap_bit ethernet; /* Hardware address type Ethernet */
132	struct ocelot_vcap_ipv4 sip;     /* Sender IP address */
133	struct ocelot_vcap_ipv4 dip;     /* Target IP address */
134};
135
136struct ocelot_vcap_key_ipv4 {
137	enum ocelot_vcap_bit ttl;      /* TTL zero */
138	enum ocelot_vcap_bit fragment; /* Fragment */
139	enum ocelot_vcap_bit options;  /* Header options */
140	struct ocelot_vcap_u8 ds;
141	struct ocelot_vcap_u8 proto;      /* Protocol */
142	struct ocelot_vcap_ipv4 sip;      /* Source IP address */
143	struct ocelot_vcap_ipv4 dip;      /* Destination IP address */
144	struct ocelot_vcap_u48 data;      /* Not UDP/TCP: IP data */
145	struct ocelot_vcap_udp_tcp sport; /* UDP/TCP: Source port */
146	struct ocelot_vcap_udp_tcp dport; /* UDP/TCP: Destination port */
147	enum ocelot_vcap_bit tcp_fin;
148	enum ocelot_vcap_bit tcp_syn;
149	enum ocelot_vcap_bit tcp_rst;
150	enum ocelot_vcap_bit tcp_psh;
151	enum ocelot_vcap_bit tcp_ack;
152	enum ocelot_vcap_bit tcp_urg;
153	enum ocelot_vcap_bit sip_eq_dip;     /* SIP equals DIP  */
154	enum ocelot_vcap_bit sport_eq_dport; /* SPORT equals DPORT  */
155	enum ocelot_vcap_bit seq_zero;       /* TCP sequence number is zero */
156};
157
158struct ocelot_vcap_key_ipv6 {
159	struct ocelot_vcap_u8 proto; /* IPv6 protocol */
160	struct ocelot_vcap_u128 sip; /* IPv6 source (byte 0-7 ignored) */
161	enum ocelot_vcap_bit ttl;  /* TTL zero */
162	struct ocelot_vcap_u8 ds;
163	struct ocelot_vcap_u48 data; /* Not UDP/TCP: IP data */
164	struct ocelot_vcap_udp_tcp sport;
165	struct ocelot_vcap_udp_tcp dport;
166	enum ocelot_vcap_bit tcp_fin;
167	enum ocelot_vcap_bit tcp_syn;
168	enum ocelot_vcap_bit tcp_rst;
169	enum ocelot_vcap_bit tcp_psh;
170	enum ocelot_vcap_bit tcp_ack;
171	enum ocelot_vcap_bit tcp_urg;
172	enum ocelot_vcap_bit sip_eq_dip;     /* SIP equals DIP  */
173	enum ocelot_vcap_bit sport_eq_dport; /* SPORT equals DPORT  */
174	enum ocelot_vcap_bit seq_zero;       /* TCP sequence number is zero */
175};
176
177enum ocelot_vcap_action {
178	OCELOT_VCAP_ACTION_DROP,
179	OCELOT_VCAP_ACTION_TRAP,
180	OCELOT_VCAP_ACTION_POLICE,
181};
182
183struct ocelot_vcap_stats {
184	u64 bytes;
185	u64 pkts;
186	u64 used;
187};
188
189struct ocelot_vcap_filter {
190	struct list_head list;
191
192	u16 prio;
193	u32 id;
194
195	enum ocelot_vcap_action action;
196	struct ocelot_vcap_stats stats;
197	unsigned long ingress_port_mask;
198
199	enum ocelot_vcap_bit dmac_mc;
200	enum ocelot_vcap_bit dmac_bc;
201	struct ocelot_vcap_key_vlan vlan;
202
203	enum ocelot_vcap_key_type key_type;
204	union {
205		/* OCELOT_VCAP_KEY_ANY: No specific fields */
206		struct ocelot_vcap_key_etype etype;
207		struct ocelot_vcap_key_llc llc;
208		struct ocelot_vcap_key_snap snap;
209		struct ocelot_vcap_key_arp arp;
210		struct ocelot_vcap_key_ipv4 ipv4;
211		struct ocelot_vcap_key_ipv6 ipv6;
212	} key;
213	struct ocelot_policer pol;
214	u32 pol_ix;
215};
216
217int ocelot_vcap_filter_add(struct ocelot *ocelot,
218			   struct ocelot_vcap_filter *rule,
219			   struct netlink_ext_ack *extack);
220int ocelot_vcap_filter_del(struct ocelot *ocelot,
221			   struct ocelot_vcap_filter *rule);
222int ocelot_vcap_filter_stats_update(struct ocelot *ocelot,
223				    struct ocelot_vcap_filter *rule);
224
225int ocelot_vcap_init(struct ocelot *ocelot);
226
227int ocelot_setup_tc_cls_flower(struct ocelot_port_private *priv,
228			       struct flow_cls_offload *f,
229			       bool ingress);
230
231#endif /* _MSCC_OCELOT_VCAP_H_ */