1 /* 2 * Copyright (C) 2017 Netronome Systems, Inc. 3 * 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. 8 * 9 * The BSD 2-Clause License: 10 * 11 * Redistribution and use in source and binary forms, with or 12 * without modification, are permitted provided that the following 13 * conditions are met: 14 * 15 * 1. Redistributions of source code must retain the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer. 18 * 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. 23 * 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 29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31 * SOFTWARE. 32 */ 33 34 #ifndef __NFP_FLOWER_H__ 35 #define __NFP_FLOWER_H__ 1 36 37 #include "cmsg.h" 38 39 #include <linux/circ_buf.h> 40 #include <linux/hashtable.h> 41 #include <linux/time64.h> 42 #include <linux/types.h> 43 #include <net/pkt_cls.h> 44 #include <net/tcp.h> 45 #include <linux/workqueue.h> 46 #include <linux/idr.h> 47 48 struct nfp_fl_pre_lag; 49 struct net_device; 50 struct nfp_app; 51 52 #define NFP_FL_STATS_CTX_DONT_CARE cpu_to_be32(0xffffffff) 53 #define NFP_FL_STATS_ENTRY_RS BIT(20) 54 #define NFP_FL_STATS_ELEM_RS 4 55 #define NFP_FL_REPEATED_HASH_MAX BIT(17) 56 #define NFP_FLOWER_HASH_BITS 19 57 #define NFP_FLOWER_MASK_ENTRY_RS 256 58 #define NFP_FLOWER_MASK_ELEMENT_RS 1 59 #define NFP_FLOWER_MASK_HASH_BITS 10 60 61 #define NFP_FL_META_FLAG_MANAGE_MASK BIT(7) 62 63 #define NFP_FL_MASK_REUSE_TIME_NS 40000 64 #define NFP_FL_MASK_ID_LOCATION 1 65 66 #define NFP_FL_VXLAN_PORT 4789 67 #define NFP_FL_GENEVE_PORT 6081 68 69 /* Extra features bitmap. */ 70 #define NFP_FL_FEATS_GENEVE BIT(0) 71 #define NFP_FL_NBI_MTU_SETTING BIT(1) 72 #define NFP_FL_FEATS_GENEVE_OPT BIT(2) 73 #define NFP_FL_FEATS_LAG BIT(31) 74 75 struct nfp_fl_mask_id { 76 struct circ_buf mask_id_free_list; 77 ktime_t *last_used; 78 u8 init_unallocated; 79 }; 80 81 struct nfp_fl_stats_id { 82 struct circ_buf free_list; 83 u32 init_unalloc; 84 u8 repeated_em_count; 85 }; 86 87 /** 88 * struct nfp_mtu_conf - manage MTU setting 89 * @portnum: NFP port number of repr with requested MTU change 90 * @requested_val: MTU value requested for repr 91 * @ack: Received ack that MTU has been correctly set 92 * @wait_q: Wait queue for MTU acknowledgements 93 * @lock: Lock for setting/reading MTU variables 94 */ 95 struct nfp_mtu_conf { 96 u32 portnum; 97 unsigned int requested_val; 98 bool ack; 99 wait_queue_head_t wait_q; 100 spinlock_t lock; 101 }; 102 103 /** 104 * struct nfp_fl_lag - Flower APP priv data for link aggregation 105 * @lag_nb: Notifier to track master/slave events 106 * @work: Work queue for writing configs to the HW 107 * @lock: Lock to protect lag_group_list 108 * @group_list: List of all master/slave groups offloaded 109 * @ida_handle: IDA to handle group ids 110 * @pkt_num: Incremented for each config packet sent 111 * @batch_ver: Incremented for each batch of config packets 112 * @global_inst: Instance allocator for groups 113 * @rst_cfg: Marker to reset HW LAG config 114 * @retrans_skbs: Cmsgs that could not be processed by HW and require 115 * retransmission 116 */ 117 struct nfp_fl_lag { 118 struct notifier_block lag_nb; 119 struct delayed_work work; 120 struct mutex lock; 121 struct list_head group_list; 122 struct ida ida_handle; 123 unsigned int pkt_num; 124 unsigned int batch_ver; 125 u8 global_inst; 126 bool rst_cfg; 127 struct sk_buff_head retrans_skbs; 128 }; 129 130 /** 131 * struct nfp_flower_priv - Flower APP per-vNIC priv data 132 * @app: Back pointer to app 133 * @nn: Pointer to vNIC 134 * @mask_id_seed: Seed used for mask hash table 135 * @flower_version: HW version of flower 136 * @flower_ext_feats: Bitmap of extra features the HW supports 137 * @stats_ids: List of free stats ids 138 * @mask_ids: List of free mask ids 139 * @mask_table: Hash table used to store masks 140 * @flow_table: Hash table used to store flower rules 141 * @cmsg_work: Workqueue for control messages processing 142 * @cmsg_skbs_high: List of higher priority skbs for control message 143 * processing 144 * @cmsg_skbs_low: List of lower priority skbs for control message 145 * processing 146 * @nfp_mac_off_list: List of MAC addresses to offload 147 * @nfp_mac_index_list: List of unique 8-bit indexes for non NFP netdevs 148 * @nfp_ipv4_off_list: List of IPv4 addresses to offload 149 * @nfp_neigh_off_list: List of neighbour offloads 150 * @nfp_mac_off_lock: Lock for the MAC address list 151 * @nfp_mac_index_lock: Lock for the MAC index list 152 * @nfp_ipv4_off_lock: Lock for the IPv4 address list 153 * @nfp_neigh_off_lock: Lock for the neighbour address list 154 * @nfp_mac_off_ids: IDA to manage id assignment for offloaded macs 155 * @nfp_mac_off_count: Number of MACs in address list 156 * @nfp_tun_mac_nb: Notifier to monitor link state 157 * @nfp_tun_neigh_nb: Notifier to monitor neighbour state 158 * @reify_replies: atomically stores the number of replies received 159 * from firmware for repr reify 160 * @reify_wait_queue: wait queue for repr reify response counting 161 * @mtu_conf: Configuration of repr MTU value 162 * @nfp_lag: Link aggregation data block 163 */ 164 struct nfp_flower_priv { 165 struct nfp_app *app; 166 struct nfp_net *nn; 167 u32 mask_id_seed; 168 u64 flower_version; 169 u64 flower_ext_feats; 170 struct nfp_fl_stats_id stats_ids; 171 struct nfp_fl_mask_id mask_ids; 172 DECLARE_HASHTABLE(mask_table, NFP_FLOWER_MASK_HASH_BITS); 173 DECLARE_HASHTABLE(flow_table, NFP_FLOWER_HASH_BITS); 174 struct work_struct cmsg_work; 175 struct sk_buff_head cmsg_skbs_high; 176 struct sk_buff_head cmsg_skbs_low; 177 struct list_head nfp_mac_off_list; 178 struct list_head nfp_mac_index_list; 179 struct list_head nfp_ipv4_off_list; 180 struct list_head nfp_neigh_off_list; 181 struct mutex nfp_mac_off_lock; 182 struct mutex nfp_mac_index_lock; 183 struct mutex nfp_ipv4_off_lock; 184 spinlock_t nfp_neigh_off_lock; 185 struct ida nfp_mac_off_ids; 186 int nfp_mac_off_count; 187 struct notifier_block nfp_tun_mac_nb; 188 struct notifier_block nfp_tun_neigh_nb; 189 atomic_t reify_replies; 190 wait_queue_head_t reify_wait_queue; 191 struct nfp_mtu_conf mtu_conf; 192 struct nfp_fl_lag nfp_lag; 193 }; 194 195 /** 196 * struct nfp_flower_repr_priv - Flower APP per-repr priv data 197 * @lag_port_flags: Extended port flags to record lag state of repr 198 */ 199 struct nfp_flower_repr_priv { 200 unsigned long lag_port_flags; 201 }; 202 203 struct nfp_fl_key_ls { 204 u32 key_layer_two; 205 u8 key_layer; 206 int key_size; 207 }; 208 209 struct nfp_fl_rule_metadata { 210 u8 key_len; 211 u8 mask_len; 212 u8 act_len; 213 u8 flags; 214 __be32 host_ctx_id; 215 __be64 host_cookie __packed; 216 __be64 flow_version __packed; 217 __be32 shortcut; 218 }; 219 220 struct nfp_fl_stats { 221 u64 pkts; 222 u64 bytes; 223 u64 used; 224 }; 225 226 struct nfp_fl_payload { 227 struct nfp_fl_rule_metadata meta; 228 unsigned long tc_flower_cookie; 229 struct hlist_node link; 230 struct rcu_head rcu; 231 spinlock_t lock; /* lock stats */ 232 struct nfp_fl_stats stats; 233 __be32 nfp_tun_ipv4_addr; 234 struct net_device *ingress_dev; 235 char *unmasked_data; 236 char *mask_data; 237 char *action_data; 238 bool ingress_offload; 239 }; 240 241 struct nfp_fl_stats_frame { 242 __be32 stats_con_id; 243 __be32 pkt_count; 244 __be64 byte_count; 245 __be64 stats_cookie; 246 }; 247 248 int nfp_flower_metadata_init(struct nfp_app *app); 249 void nfp_flower_metadata_cleanup(struct nfp_app *app); 250 251 int nfp_flower_setup_tc(struct nfp_app *app, struct net_device *netdev, 252 enum tc_setup_type type, void *type_data); 253 int nfp_flower_compile_flow_match(struct tc_cls_flower_offload *flow, 254 struct nfp_fl_key_ls *key_ls, 255 struct net_device *netdev, 256 struct nfp_fl_payload *nfp_flow, 257 enum nfp_flower_tun_type tun_type); 258 int nfp_flower_compile_action(struct nfp_app *app, 259 struct tc_cls_flower_offload *flow, 260 struct net_device *netdev, 261 struct nfp_fl_payload *nfp_flow); 262 int nfp_compile_flow_metadata(struct nfp_app *app, 263 struct tc_cls_flower_offload *flow, 264 struct nfp_fl_payload *nfp_flow, 265 struct net_device *netdev); 266 int nfp_modify_flow_metadata(struct nfp_app *app, 267 struct nfp_fl_payload *nfp_flow); 268 269 struct nfp_fl_payload * 270 nfp_flower_search_fl_table(struct nfp_app *app, unsigned long tc_flower_cookie, 271 struct net_device *netdev, __be32 host_ctx); 272 struct nfp_fl_payload * 273 nfp_flower_remove_fl_table(struct nfp_app *app, unsigned long tc_flower_cookie); 274 275 void nfp_flower_rx_flow_stats(struct nfp_app *app, struct sk_buff *skb); 276 277 int nfp_tunnel_config_start(struct nfp_app *app); 278 void nfp_tunnel_config_stop(struct nfp_app *app); 279 void nfp_tunnel_write_macs(struct nfp_app *app); 280 void nfp_tunnel_del_ipv4_off(struct nfp_app *app, __be32 ipv4); 281 void nfp_tunnel_add_ipv4_off(struct nfp_app *app, __be32 ipv4); 282 void nfp_tunnel_request_route(struct nfp_app *app, struct sk_buff *skb); 283 void nfp_tunnel_keep_alive(struct nfp_app *app, struct sk_buff *skb); 284 int nfp_flower_setup_tc_egress_cb(enum tc_setup_type type, void *type_data, 285 void *cb_priv); 286 void nfp_flower_lag_init(struct nfp_fl_lag *lag); 287 void nfp_flower_lag_cleanup(struct nfp_fl_lag *lag); 288 int nfp_flower_lag_reset(struct nfp_fl_lag *lag); 289 bool nfp_flower_lag_unprocessed_msg(struct nfp_app *app, struct sk_buff *skb); 290 int nfp_flower_lag_populate_pre_action(struct nfp_app *app, 291 struct net_device *master, 292 struct nfp_fl_pre_lag *pre_act); 293 int nfp_flower_lag_get_output_id(struct nfp_app *app, 294 struct net_device *master); 295 296 #endif 297