2 * Copyright (C) 2017 Netronome Systems, Inc.
4 * This software is dual licensed under the GNU General License Version 2,
5 * June 1991 as shown in the file COPYING in the top-level directory of this
6 * source tree or the BSD 2-Clause License provided below. You have the
7 * option to license this software under the complete terms of either license.
9 * The BSD 2-Clause License:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * 1. Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
19 * 2. Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 #ifndef __NFP_FLOWER_H__
35 #define __NFP_FLOWER_H__ 1
37 #include <linux/circ_buf.h>
38 #include <linux/hashtable.h>
39 #include <linux/time64.h>
40 #include <linux/types.h>
46 #define NFP_FL_STATS_ENTRY_RS BIT(20)
47 #define NFP_FL_STATS_ELEM_RS 4
48 #define NFP_FL_REPEATED_HASH_MAX BIT(17)
49 #define NFP_FLOWER_HASH_BITS 19
50 #define NFP_FLOWER_MASK_ENTRY_RS 256
51 #define NFP_FLOWER_MASK_ELEMENT_RS 1
52 #define NFP_FLOWER_MASK_HASH_BITS 10
54 #define NFP_FL_META_FLAG_NEW_MASK 128
55 #define NFP_FL_META_FLAG_LAST_MASK 1
57 #define NFP_FL_MASK_REUSE_TIME_NS 40000
58 #define NFP_FL_MASK_ID_LOCATION 1
60 struct nfp_fl_mask_id {
61 struct circ_buf mask_id_free_list;
62 struct timespec64 *last_used;
66 struct nfp_fl_stats_id {
67 struct circ_buf free_list;
73 * struct nfp_flower_priv - Flower APP per-vNIC priv data
74 * @nn: Pointer to vNIC
75 * @mask_id_seed: Seed used for mask hash table
76 * @flower_version: HW version of flower
77 * @stats_ids: List of free stats ids
78 * @mask_ids: List of free mask ids
79 * @mask_table: Hash table used to store masks
80 * @flow_table: Hash table used to store flower rules
82 struct nfp_flower_priv {
86 struct nfp_fl_stats_id stats_ids;
87 struct nfp_fl_mask_id mask_ids;
88 DECLARE_HASHTABLE(mask_table, NFP_FLOWER_MASK_HASH_BITS);
89 DECLARE_HASHTABLE(flow_table, NFP_FLOWER_HASH_BITS);
92 struct nfp_fl_key_ls {
98 struct nfp_fl_rule_metadata {
104 __be64 host_cookie __packed;
105 __be64 flow_version __packed;
109 struct nfp_fl_stats {
115 struct nfp_fl_payload {
116 struct nfp_fl_rule_metadata meta;
117 unsigned long tc_flower_cookie;
118 struct hlist_node link;
120 spinlock_t lock; /* lock stats */
121 struct nfp_fl_stats stats;
127 struct nfp_fl_stats_frame {
134 int nfp_flower_metadata_init(struct nfp_app *app);
135 void nfp_flower_metadata_cleanup(struct nfp_app *app);
137 int nfp_flower_setup_tc(struct nfp_app *app, struct net_device *netdev,
138 enum tc_setup_type type, u32 handle, __be16 proto,
139 struct tc_to_netdev *tc);
140 int nfp_flower_compile_flow_match(struct tc_cls_flower_offload *flow,
141 struct nfp_fl_key_ls *key_ls,
142 struct net_device *netdev,
143 struct nfp_fl_payload *nfp_flow);
144 int nfp_flower_compile_action(struct tc_cls_flower_offload *flow,
145 struct net_device *netdev,
146 struct nfp_fl_payload *nfp_flow);
147 int nfp_compile_flow_metadata(struct nfp_app *app,
148 struct tc_cls_flower_offload *flow,
149 struct nfp_fl_payload *nfp_flow);
150 int nfp_modify_flow_metadata(struct nfp_app *app,
151 struct nfp_fl_payload *nfp_flow);
153 struct nfp_fl_payload *
154 nfp_flower_search_fl_table(struct nfp_app *app, unsigned long tc_flower_cookie);
155 struct nfp_fl_payload *
156 nfp_flower_remove_fl_table(struct nfp_app *app, unsigned long tc_flower_cookie);
158 void nfp_flower_rx_flow_stats(struct nfp_app *app, struct sk_buff *skb);