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
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27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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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>
41 #include <net/pkt_cls.h>
42 #include <linux/workqueue.h>
47 #define NFP_FL_STATS_ENTRY_RS BIT(20)
48 #define NFP_FL_STATS_ELEM_RS 4
49 #define NFP_FL_REPEATED_HASH_MAX BIT(17)
50 #define NFP_FLOWER_HASH_BITS 19
51 #define NFP_FLOWER_MASK_ENTRY_RS 256
52 #define NFP_FLOWER_MASK_ELEMENT_RS 1
53 #define NFP_FLOWER_MASK_HASH_BITS 10
55 #define NFP_FL_META_FLAG_MANAGE_MASK BIT(7)
57 #define NFP_FL_MASK_REUSE_TIME_NS 40000
58 #define NFP_FL_MASK_ID_LOCATION 1
60 #define NFP_FL_VXLAN_PORT 4789
62 struct nfp_fl_mask_id {
63 struct circ_buf mask_id_free_list;
64 struct timespec64 *last_used;
68 struct nfp_fl_stats_id {
69 struct circ_buf free_list;
75 * struct nfp_flower_priv - Flower APP per-vNIC priv data
76 * @app: Back pointer to app
77 * @nn: Pointer to vNIC
78 * @mask_id_seed: Seed used for mask hash table
79 * @flower_version: HW version of flower
80 * @stats_ids: List of free stats ids
81 * @mask_ids: List of free mask ids
82 * @mask_table: Hash table used to store masks
83 * @flow_table: Hash table used to store flower rules
84 * @cmsg_work: Workqueue for control messages processing
85 * @cmsg_skbs: List of skbs for control message processing
86 * @nfp_mac_off_list: List of MAC addresses to offload
87 * @nfp_mac_index_list: List of unique 8-bit indexes for non NFP netdevs
88 * @nfp_ipv4_off_list: List of IPv4 addresses to offload
89 * @nfp_neigh_off_list: List of neighbour offloads
90 * @nfp_mac_off_lock: Lock for the MAC address list
91 * @nfp_mac_index_lock: Lock for the MAC index list
92 * @nfp_ipv4_off_lock: Lock for the IPv4 address list
93 * @nfp_neigh_off_lock: Lock for the neighbour address list
94 * @nfp_mac_off_ids: IDA to manage id assignment for offloaded macs
95 * @nfp_mac_off_count: Number of MACs in address list
96 * @nfp_tun_mac_nb: Notifier to monitor link state
97 * @nfp_tun_neigh_nb: Notifier to monitor neighbour state
99 struct nfp_flower_priv {
104 struct nfp_fl_stats_id stats_ids;
105 struct nfp_fl_mask_id mask_ids;
106 DECLARE_HASHTABLE(mask_table, NFP_FLOWER_MASK_HASH_BITS);
107 DECLARE_HASHTABLE(flow_table, NFP_FLOWER_HASH_BITS);
108 struct work_struct cmsg_work;
109 struct sk_buff_head cmsg_skbs;
110 struct list_head nfp_mac_off_list;
111 struct list_head nfp_mac_index_list;
112 struct list_head nfp_ipv4_off_list;
113 struct list_head nfp_neigh_off_list;
114 struct mutex nfp_mac_off_lock;
115 struct mutex nfp_mac_index_lock;
116 struct mutex nfp_ipv4_off_lock;
117 spinlock_t nfp_neigh_off_lock;
118 struct ida nfp_mac_off_ids;
119 int nfp_mac_off_count;
120 struct notifier_block nfp_tun_mac_nb;
121 struct notifier_block nfp_tun_neigh_nb;
124 struct nfp_fl_key_ls {
130 struct nfp_fl_rule_metadata {
136 __be64 host_cookie __packed;
137 __be64 flow_version __packed;
141 struct nfp_fl_stats {
147 struct nfp_fl_payload {
148 struct nfp_fl_rule_metadata meta;
149 unsigned long tc_flower_cookie;
150 struct hlist_node link;
152 spinlock_t lock; /* lock stats */
153 struct nfp_fl_stats stats;
154 __be32 nfp_tun_ipv4_addr;
160 struct nfp_fl_stats_frame {
167 int nfp_flower_metadata_init(struct nfp_app *app);
168 void nfp_flower_metadata_cleanup(struct nfp_app *app);
170 int nfp_flower_setup_tc(struct nfp_app *app, struct net_device *netdev,
171 enum tc_setup_type type, void *type_data);
172 int nfp_flower_compile_flow_match(struct tc_cls_flower_offload *flow,
173 struct nfp_fl_key_ls *key_ls,
174 struct net_device *netdev,
175 struct nfp_fl_payload *nfp_flow);
176 int nfp_flower_compile_action(struct tc_cls_flower_offload *flow,
177 struct net_device *netdev,
178 struct nfp_fl_payload *nfp_flow);
179 int nfp_compile_flow_metadata(struct nfp_app *app,
180 struct tc_cls_flower_offload *flow,
181 struct nfp_fl_payload *nfp_flow);
182 int nfp_modify_flow_metadata(struct nfp_app *app,
183 struct nfp_fl_payload *nfp_flow);
185 struct nfp_fl_payload *
186 nfp_flower_search_fl_table(struct nfp_app *app, unsigned long tc_flower_cookie);
187 struct nfp_fl_payload *
188 nfp_flower_remove_fl_table(struct nfp_app *app, unsigned long tc_flower_cookie);
190 void nfp_flower_rx_flow_stats(struct nfp_app *app, struct sk_buff *skb);
192 int nfp_tunnel_config_start(struct nfp_app *app);
193 void nfp_tunnel_config_stop(struct nfp_app *app);
194 void nfp_tunnel_write_macs(struct nfp_app *app);
195 void nfp_tunnel_del_ipv4_off(struct nfp_app *app, __be32 ipv4);
196 void nfp_tunnel_add_ipv4_off(struct nfp_app *app, __be32 ipv4);
197 void nfp_tunnel_request_route(struct nfp_app *app, struct sk_buff *skb);
198 void nfp_tunnel_keep_alive(struct nfp_app *app, struct sk_buff *skb);
199 int nfp_flower_setup_tc_egress_cb(enum tc_setup_type type, void *type_data,