1/*
  2 * This file is part of the Chelsio T4/T5/T6 Ethernet driver for Linux.
  3 *
  4 * Copyright (c) 2017 Chelsio Communications, Inc. All rights reserved.
  5 *
  6 * This software is available to you under a choice of one of two
  7 * licenses.  You may choose to be licensed under the terms of the GNU
  8 * General Public License (GPL) Version 2, available from the file
  9 * COPYING in the main directory of this source tree, or the
 10 * OpenIB.org BSD license below:
 11 *
 12 *     Redistribution and use in source and binary forms, with or
 13 *     without modification, are permitted provided that the following
 14 *     conditions are met:
 15 *
 16 *      - Redistributions of source code must retain the above
 17 *        copyright notice, this list of conditions and the following
 18 *        disclaimer.
 19 *
 20 *      - Redistributions in binary form must reproduce the above
 21 *        copyright notice, this list of conditions and the following
 22 *        disclaimer in the documentation and/or other materials
 23 *        provided with the distribution.
 24 *
 25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 32 * SOFTWARE.
 33 */
 34
 35#ifndef __CXGB4_TC_FLOWER_H
 36#define __CXGB4_TC_FLOWER_H
 37
 38#include <net/pkt_cls.h>
 39
 40struct ch_tc_flower_stats {
 41	u64 prev_packet_count;
 42	u64 packet_count;
 43	u64 byte_count;
 44	u64 last_used;
 45};
 46
 47struct ch_tc_flower_entry {
 48	struct ch_filter_specification fs;
 49	struct ch_tc_flower_stats stats;
 50	unsigned long tc_flower_cookie;
 51	struct rhash_head node;
 52	struct rcu_head rcu;
 53	spinlock_t lock; /* lock for stats */
 54	u32 filter_id;
 55};
 56
 57enum {
 58	ETH_DMAC_31_0,	/* dmac bits 0.. 31 */
 59	ETH_DMAC_47_32,	/* dmac bits 32..47 */
 60	ETH_SMAC_15_0,	/* smac bits 0.. 15 */
 61	ETH_SMAC_47_16,	/* smac bits 16..47 */
 62
 63	IP4_SRC,	/* 32-bit IPv4 src  */
 64	IP4_DST,	/* 32-bit IPv4 dst  */
 65
 66	IP6_SRC_31_0,	/* src bits 0..  31 */
 67	IP6_SRC_63_32,	/* src bits 63.. 32 */
 68	IP6_SRC_95_64,	/* src bits 95.. 64 */
 69	IP6_SRC_127_96,	/* src bits 127..96 */
 70
 71	IP6_DST_31_0,	/* dst bits 0..  31 */
 72	IP6_DST_63_32,	/* dst bits 63.. 32 */
 73	IP6_DST_95_64,	/* dst bits 95.. 64 */
 74	IP6_DST_127_96,	/* dst bits 127..96 */
 75
 76	TCP_SPORT,	/* 16-bit TCP sport */
 77	TCP_DPORT,	/* 16-bit TCP dport */
 78
 79	UDP_SPORT,	/* 16-bit UDP sport */
 80	UDP_DPORT,	/* 16-bit UDP dport */
 81};
 82
 83struct ch_tc_pedit_fields {
 84	u8 field;
 85	u8 size;
 86	u32 offset;
 87};
 88
 89#define PEDIT_FIELDS(type, field, size, fs_field, offset) \
 90	{ type## field, size, \
 91		offsetof(struct ch_filter_specification, fs_field) + (offset) }
 92
 93#define PEDIT_ETH_DMAC_MASK		0xffff
 94#define PEDIT_TCP_UDP_SPORT_MASK	0xffff
 95#define PEDIT_ETH_DMAC_31_0		0x0
 96#define PEDIT_ETH_DMAC_47_32_SMAC_15_0	0x4
 97#define PEDIT_ETH_SMAC_47_16		0x8
 98#define PEDIT_IP4_SRC			0xC
 99#define PEDIT_IP4_DST			0x10
100#define PEDIT_IP6_SRC_31_0		0x8
101#define PEDIT_IP6_SRC_63_32		0xC
102#define PEDIT_IP6_SRC_95_64		0x10
103#define PEDIT_IP6_SRC_127_96		0x14
104#define PEDIT_IP6_DST_31_0		0x18
105#define PEDIT_IP6_DST_63_32		0x1C
106#define PEDIT_IP6_DST_95_64		0x20
107#define PEDIT_IP6_DST_127_96		0x24
108#define PEDIT_TCP_SPORT_DPORT		0x0
109#define PEDIT_UDP_SPORT_DPORT		0x0
110
111enum cxgb4_action_natmode_flags {
112	CXGB4_ACTION_NATMODE_NONE = 0,
113	CXGB4_ACTION_NATMODE_DIP = (1 << 0),
114	CXGB4_ACTION_NATMODE_SIP = (1 << 1),
115	CXGB4_ACTION_NATMODE_DPORT = (1 << 2),
116	CXGB4_ACTION_NATMODE_SPORT = (1 << 3),
117};
118
119/* TC PEDIT action to NATMODE translation entry */
120struct cxgb4_natmode_config {
121	enum chip_type chip;
122	u8 flags;
123	u8 natmode;
124};
125
126void cxgb4_process_flow_actions(struct net_device *in,
127				struct flow_action *actions,
128				struct ch_filter_specification *fs);
129int cxgb4_validate_flow_actions(struct net_device *dev,
130				struct flow_action *actions,
131				struct netlink_ext_ack *extack,
132				u8 matchall_filter);
133
134int cxgb4_tc_flower_replace(struct net_device *dev,
135			    struct flow_cls_offload *cls);
136int cxgb4_tc_flower_destroy(struct net_device *dev,
137			    struct flow_cls_offload *cls);
138int cxgb4_tc_flower_stats(struct net_device *dev,
139			  struct flow_cls_offload *cls);
140int cxgb4_flow_rule_replace(struct net_device *dev, struct flow_rule *rule,
141			    u32 tc_prio, struct netlink_ext_ack *extack,
142			    struct ch_filter_specification *fs, u32 *tid);
143int cxgb4_flow_rule_destroy(struct net_device *dev, u32 tc_prio,
144			    struct ch_filter_specification *fs, int tid);
145
146int cxgb4_init_tc_flower(struct adapter *adap);
147void cxgb4_cleanup_tc_flower(struct adapter *adap);
148#endif /* __CXGB4_TC_FLOWER_H */