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
40 struct ch_tc_flower_stats {
41 u64 prev_packet_count;
42 u64 packet_count;
43 u64 byte_count;
44 u64 last_used;
45 };
46
47 struct 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
57 enum {
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
83 struct 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
111 int cxgb4_tc_flower_replace(struct net_device *dev,
112 struct flow_cls_offload *cls);
113 int cxgb4_tc_flower_destroy(struct net_device *dev,
114 struct flow_cls_offload *cls);
115 int cxgb4_tc_flower_stats(struct net_device *dev,
116 struct flow_cls_offload *cls);
117
118 int cxgb4_init_tc_flower(struct adapter *adap);
119 void cxgb4_cleanup_tc_flower(struct adapter *adap);
120 #endif /* __CXGB4_TC_FLOWER_H */