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_ACE_H_
  7#define _MSCC_OCELOT_ACE_H_
  8
  9#include "ocelot.h"
 10#include <net/sch_generic.h>
 11#include <net/pkt_cls.h>
 12
 13struct ocelot_ipv4 {
 14	u8 addr[4];
 15};
 16
 17enum ocelot_vcap_bit {
 18	OCELOT_VCAP_BIT_ANY,
 19	OCELOT_VCAP_BIT_0,
 20	OCELOT_VCAP_BIT_1
 21};
 22
 23struct ocelot_vcap_u8 {
 24	u8 value[1];
 25	u8 mask[1];
 26};
 27
 28struct ocelot_vcap_u16 {
 29	u8 value[2];
 30	u8 mask[2];
 31};
 32
 33struct ocelot_vcap_u24 {
 34	u8 value[3];
 35	u8 mask[3];
 36};
 37
 38struct ocelot_vcap_u32 {
 39	u8 value[4];
 40	u8 mask[4];
 41};
 42
 43struct ocelot_vcap_u40 {
 44	u8 value[5];
 45	u8 mask[5];
 46};
 47
 48struct ocelot_vcap_u48 {
 49	u8 value[6];
 50	u8 mask[6];
 51};
 52
 53struct ocelot_vcap_u64 {
 54	u8 value[8];
 55	u8 mask[8];
 56};
 57
 58struct ocelot_vcap_u128 {
 59	u8 value[16];
 60	u8 mask[16];
 61};
 62
 63struct ocelot_vcap_vid {
 64	u16 value;
 65	u16 mask;
 66};
 67
 68struct ocelot_vcap_ipv4 {
 69	struct ocelot_ipv4 value;
 70	struct ocelot_ipv4 mask;
 71};
 72
 73struct ocelot_vcap_udp_tcp {
 74	u16 value;
 75	u16 mask;
 76};
 77
 78enum ocelot_ace_type {
 79	OCELOT_ACE_TYPE_ANY,
 80	OCELOT_ACE_TYPE_ETYPE,
 81	OCELOT_ACE_TYPE_LLC,
 82	OCELOT_ACE_TYPE_SNAP,
 83	OCELOT_ACE_TYPE_ARP,
 84	OCELOT_ACE_TYPE_IPV4,
 85	OCELOT_ACE_TYPE_IPV6
 86};
 87
 88struct ocelot_ace_vlan {
 89	struct ocelot_vcap_vid vid;    /* VLAN ID (12 bit) */
 90	struct ocelot_vcap_u8  pcp;    /* PCP (3 bit) */
 91	enum ocelot_vcap_bit dei;    /* DEI */
 92	enum ocelot_vcap_bit tagged; /* Tagged/untagged frame */
 93};
 94
 95struct ocelot_ace_frame_etype {
 96	struct ocelot_vcap_u48 dmac;
 97	struct ocelot_vcap_u48 smac;
 98	struct ocelot_vcap_u16 etype;
 99	struct ocelot_vcap_u16 data; /* MAC data */
100};
101
102struct ocelot_ace_frame_llc {
103	struct ocelot_vcap_u48 dmac;
104	struct ocelot_vcap_u48 smac;
105
106	/* LLC header: DSAP at byte 0, SSAP at byte 1, Control at byte 2 */
107	struct ocelot_vcap_u32 llc;
108};
109
110struct ocelot_ace_frame_snap {
111	struct ocelot_vcap_u48 dmac;
112	struct ocelot_vcap_u48 smac;
113
114	/* SNAP header: Organization Code at byte 0, Type at byte 3 */
115	struct ocelot_vcap_u40 snap;
116};
117
118struct ocelot_ace_frame_arp {
119	struct ocelot_vcap_u48 smac;
120	enum ocelot_vcap_bit arp;	/* Opcode ARP/RARP */
121	enum ocelot_vcap_bit req;	/* Opcode request/reply */
122	enum ocelot_vcap_bit unknown;    /* Opcode unknown */
123	enum ocelot_vcap_bit smac_match; /* Sender MAC matches SMAC */
124	enum ocelot_vcap_bit dmac_match; /* Target MAC matches DMAC */
125
126	/**< Protocol addr. length 4, hardware length 6 */
127	enum ocelot_vcap_bit length;
128
129	enum ocelot_vcap_bit ip;       /* Protocol address type IP */
130	enum  ocelot_vcap_bit ethernet; /* Hardware address type Ethernet */
131	struct ocelot_vcap_ipv4 sip;     /* Sender IP address */
132	struct ocelot_vcap_ipv4 dip;     /* Target IP address */
133};
134
135struct ocelot_ace_frame_ipv4 {
136	enum ocelot_vcap_bit ttl;      /* TTL zero */
137	enum ocelot_vcap_bit fragment; /* Fragment */
138	enum ocelot_vcap_bit options;  /* Header options */
139	struct ocelot_vcap_u8 ds;
140	struct ocelot_vcap_u8 proto;      /* Protocol */
141	struct ocelot_vcap_ipv4 sip;      /* Source IP address */
142	struct ocelot_vcap_ipv4 dip;      /* Destination IP address */
143	struct ocelot_vcap_u48 data;      /* Not UDP/TCP: IP data */
144	struct ocelot_vcap_udp_tcp sport; /* UDP/TCP: Source port */
145	struct ocelot_vcap_udp_tcp dport; /* UDP/TCP: Destination port */
146	enum ocelot_vcap_bit tcp_fin;
147	enum ocelot_vcap_bit tcp_syn;
148	enum ocelot_vcap_bit tcp_rst;
149	enum ocelot_vcap_bit tcp_psh;
150	enum ocelot_vcap_bit tcp_ack;
151	enum ocelot_vcap_bit tcp_urg;
152	enum ocelot_vcap_bit sip_eq_dip;     /* SIP equals DIP  */
153	enum ocelot_vcap_bit sport_eq_dport; /* SPORT equals DPORT  */
154	enum ocelot_vcap_bit seq_zero;       /* TCP sequence number is zero */
155};
156
157struct ocelot_ace_frame_ipv6 {
158	struct ocelot_vcap_u8 proto; /* IPv6 protocol */
159	struct ocelot_vcap_u128 sip; /* IPv6 source (byte 0-7 ignored) */
160	enum ocelot_vcap_bit ttl;  /* TTL zero */
161	struct ocelot_vcap_u8 ds;
162	struct ocelot_vcap_u48 data; /* Not UDP/TCP: IP data */
163	struct ocelot_vcap_udp_tcp sport;
164	struct ocelot_vcap_udp_tcp dport;
165	enum ocelot_vcap_bit tcp_fin;
166	enum ocelot_vcap_bit tcp_syn;
167	enum ocelot_vcap_bit tcp_rst;
168	enum ocelot_vcap_bit tcp_psh;
169	enum ocelot_vcap_bit tcp_ack;
170	enum ocelot_vcap_bit tcp_urg;
171	enum ocelot_vcap_bit sip_eq_dip;     /* SIP equals DIP  */
172	enum ocelot_vcap_bit sport_eq_dport; /* SPORT equals DPORT  */
173	enum ocelot_vcap_bit seq_zero;       /* TCP sequence number is zero */
174};
175
176enum ocelot_ace_action {
177	OCELOT_ACL_ACTION_DROP,
178	OCELOT_ACL_ACTION_TRAP,
179};
180
181struct ocelot_ace_stats {
182	u64 bytes;
183	u64 pkts;
184	u64 used;
185};
186
187struct ocelot_ace_rule {
188	struct list_head list;
189	struct ocelot_port *port;
190
191	u16 prio;
192	u32 id;
193
194	enum ocelot_ace_action action;
195	struct ocelot_ace_stats stats;
196	int chip_port;
197
198	enum ocelot_vcap_bit dmac_mc;
199	enum ocelot_vcap_bit dmac_bc;
200	struct ocelot_ace_vlan vlan;
201
202	enum ocelot_ace_type type;
203	union {
204		/* ocelot_ACE_TYPE_ANY: No specific fields */
205		struct ocelot_ace_frame_etype etype;
206		struct ocelot_ace_frame_llc llc;
207		struct ocelot_ace_frame_snap snap;
208		struct ocelot_ace_frame_arp arp;
209		struct ocelot_ace_frame_ipv4 ipv4;
210		struct ocelot_ace_frame_ipv6 ipv6;
211	} frame;
212};
213
214struct ocelot_acl_block {
215	struct list_head rules;
216	struct ocelot *ocelot;
217	int count;
218};
219
220int ocelot_ace_rule_offload_add(struct ocelot_ace_rule *rule);
221int ocelot_ace_rule_offload_del(struct ocelot_ace_rule *rule);
222int ocelot_ace_rule_stats_update(struct ocelot_ace_rule *rule);
223
224int ocelot_ace_init(struct ocelot *ocelot);
225void ocelot_ace_deinit(void);
226
227int ocelot_setup_tc_block_flower_bind(struct ocelot_port *port,
228				      struct flow_block_offload *f);
229void ocelot_setup_tc_block_flower_unbind(struct ocelot_port *port,
230					 struct flow_block_offload *f);
231
232#endif /* _MSCC_OCELOT_ACE_H_ */