1 /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ 2 /* Copyright (C) 2017-2018 Netronome Systems, Inc. */ 3 4 #ifndef __NFP_FLOWER_H__ 5 #define __NFP_FLOWER_H__ 1 6 7 #include "cmsg.h" 8 9 #include <linux/circ_buf.h> 10 #include <linux/hashtable.h> 11 #include <linux/rhashtable.h> 12 #include <linux/time64.h> 13 #include <linux/types.h> 14 #include <net/pkt_cls.h> 15 #include <net/tcp.h> 16 #include <linux/workqueue.h> 17 #include <linux/idr.h> 18 19 struct nfp_fl_pre_lag; 20 struct net_device; 21 struct nfp_app; 22 23 #define NFP_FL_STAT_ID_MU_NUM GENMASK(31, 22) 24 #define NFP_FL_STAT_ID_STAT GENMASK(21, 0) 25 26 #define NFP_FL_STATS_ELEM_RS FIELD_SIZEOF(struct nfp_fl_stats_id, \ 27 init_unalloc) 28 #define NFP_FLOWER_MASK_ENTRY_RS 256 29 #define NFP_FLOWER_MASK_ELEMENT_RS 1 30 #define NFP_FLOWER_MASK_HASH_BITS 10 31 32 #define NFP_FL_META_FLAG_MANAGE_MASK BIT(7) 33 34 #define NFP_FL_MASK_REUSE_TIME_NS 40000 35 #define NFP_FL_MASK_ID_LOCATION 1 36 37 #define NFP_FL_VXLAN_PORT 4789 38 #define NFP_FL_GENEVE_PORT 6081 39 40 /* Extra features bitmap. */ 41 #define NFP_FL_FEATS_GENEVE BIT(0) 42 #define NFP_FL_NBI_MTU_SETTING BIT(1) 43 #define NFP_FL_FEATS_GENEVE_OPT BIT(2) 44 #define NFP_FL_FEATS_VLAN_PCP BIT(3) 45 #define NFP_FL_FEATS_LAG BIT(31) 46 47 struct nfp_fl_mask_id { 48 struct circ_buf mask_id_free_list; 49 ktime_t *last_used; 50 u8 init_unallocated; 51 }; 52 53 struct nfp_fl_stats_id { 54 struct circ_buf free_list; 55 u32 init_unalloc; 56 u8 repeated_em_count; 57 }; 58 59 /** 60 * struct nfp_fl_tunnel_offloads - priv data for tunnel offloads 61 * @offloaded_macs: Hashtable of the offloaded MAC addresses 62 * @ipv4_off_list: List of IPv4 addresses to offload 63 * @neigh_off_list: List of neighbour offloads 64 * @ipv4_off_lock: Lock for the IPv4 address list 65 * @neigh_off_lock: Lock for the neighbour address list 66 * @mac_off_ids: IDA to manage id assignment for offloaded MACs 67 * @neigh_nb: Notifier to monitor neighbour state 68 */ 69 struct nfp_fl_tunnel_offloads { 70 struct rhashtable offloaded_macs; 71 struct list_head ipv4_off_list; 72 struct list_head neigh_off_list; 73 struct mutex ipv4_off_lock; 74 spinlock_t neigh_off_lock; 75 struct ida mac_off_ids; 76 struct notifier_block neigh_nb; 77 }; 78 79 /** 80 * struct nfp_mtu_conf - manage MTU setting 81 * @portnum: NFP port number of repr with requested MTU change 82 * @requested_val: MTU value requested for repr 83 * @ack: Received ack that MTU has been correctly set 84 * @wait_q: Wait queue for MTU acknowledgements 85 * @lock: Lock for setting/reading MTU variables 86 */ 87 struct nfp_mtu_conf { 88 u32 portnum; 89 unsigned int requested_val; 90 bool ack; 91 wait_queue_head_t wait_q; 92 spinlock_t lock; 93 }; 94 95 /** 96 * struct nfp_fl_lag - Flower APP priv data for link aggregation 97 * @work: Work queue for writing configs to the HW 98 * @lock: Lock to protect lag_group_list 99 * @group_list: List of all master/slave groups offloaded 100 * @ida_handle: IDA to handle group ids 101 * @pkt_num: Incremented for each config packet sent 102 * @batch_ver: Incremented for each batch of config packets 103 * @global_inst: Instance allocator for groups 104 * @rst_cfg: Marker to reset HW LAG config 105 * @retrans_skbs: Cmsgs that could not be processed by HW and require 106 * retransmission 107 */ 108 struct nfp_fl_lag { 109 struct delayed_work work; 110 struct mutex lock; 111 struct list_head group_list; 112 struct ida ida_handle; 113 unsigned int pkt_num; 114 unsigned int batch_ver; 115 u8 global_inst; 116 bool rst_cfg; 117 struct sk_buff_head retrans_skbs; 118 }; 119 120 /** 121 * struct nfp_flower_priv - Flower APP per-vNIC priv data 122 * @app: Back pointer to app 123 * @nn: Pointer to vNIC 124 * @mask_id_seed: Seed used for mask hash table 125 * @flower_version: HW version of flower 126 * @flower_ext_feats: Bitmap of extra features the HW supports 127 * @stats_ids: List of free stats ids 128 * @mask_ids: List of free mask ids 129 * @mask_table: Hash table used to store masks 130 * @stats_ring_size: Maximum number of allowed stats ids 131 * @flow_table: Hash table used to store flower rules 132 * @stats: Stored stats updates for flower rules 133 * @stats_lock: Lock for flower rule stats updates 134 * @cmsg_work: Workqueue for control messages processing 135 * @cmsg_skbs_high: List of higher priority skbs for control message 136 * processing 137 * @cmsg_skbs_low: List of lower priority skbs for control message 138 * processing 139 * @tun: Tunnel offload data 140 * @reify_replies: atomically stores the number of replies received 141 * from firmware for repr reify 142 * @reify_wait_queue: wait queue for repr reify response counting 143 * @mtu_conf: Configuration of repr MTU value 144 * @nfp_lag: Link aggregation data block 145 * @indr_block_cb_priv: List of priv data passed to indirect block cbs 146 * @non_repr_priv: List of offloaded non-repr ports and their priv data 147 * @active_mem_unit: Current active memory unit for flower rules 148 * @total_mem_units: Total number of available memory units for flower rules 149 */ 150 struct nfp_flower_priv { 151 struct nfp_app *app; 152 struct nfp_net *nn; 153 u32 mask_id_seed; 154 u64 flower_version; 155 u64 flower_ext_feats; 156 struct nfp_fl_stats_id stats_ids; 157 struct nfp_fl_mask_id mask_ids; 158 DECLARE_HASHTABLE(mask_table, NFP_FLOWER_MASK_HASH_BITS); 159 u32 stats_ring_size; 160 struct rhashtable flow_table; 161 struct nfp_fl_stats *stats; 162 spinlock_t stats_lock; /* lock stats */ 163 struct work_struct cmsg_work; 164 struct sk_buff_head cmsg_skbs_high; 165 struct sk_buff_head cmsg_skbs_low; 166 struct nfp_fl_tunnel_offloads tun; 167 atomic_t reify_replies; 168 wait_queue_head_t reify_wait_queue; 169 struct nfp_mtu_conf mtu_conf; 170 struct nfp_fl_lag nfp_lag; 171 struct list_head indr_block_cb_priv; 172 struct list_head non_repr_priv; 173 unsigned int active_mem_unit; 174 unsigned int total_mem_units; 175 }; 176 177 /** 178 * struct nfp_flower_repr_priv - Flower APP per-repr priv data 179 * @nfp_repr: Back pointer to nfp_repr 180 * @lag_port_flags: Extended port flags to record lag state of repr 181 * @mac_offloaded: Flag indicating a MAC address is offloaded for repr 182 * @offloaded_mac_addr: MAC address that has been offloaded for repr 183 * @mac_list: List entry of reprs that share the same offloaded MAC 184 */ 185 struct nfp_flower_repr_priv { 186 struct nfp_repr *nfp_repr; 187 unsigned long lag_port_flags; 188 bool mac_offloaded; 189 u8 offloaded_mac_addr[ETH_ALEN]; 190 struct list_head mac_list; 191 }; 192 193 /** 194 * struct nfp_flower_non_repr_priv - Priv data for non-repr offloaded ports 195 * @list: List entry of offloaded reprs 196 * @netdev: Pointer to non-repr net_device 197 * @ref_count: Number of references held for this priv data 198 * @mac_offloaded: Flag indicating a MAC address is offloaded for device 199 * @offloaded_mac_addr: MAC address that has been offloaded for dev 200 */ 201 struct nfp_flower_non_repr_priv { 202 struct list_head list; 203 struct net_device *netdev; 204 int ref_count; 205 bool mac_offloaded; 206 u8 offloaded_mac_addr[ETH_ALEN]; 207 }; 208 209 struct nfp_fl_key_ls { 210 u32 key_layer_two; 211 u8 key_layer; 212 int key_size; 213 }; 214 215 struct nfp_fl_rule_metadata { 216 u8 key_len; 217 u8 mask_len; 218 u8 act_len; 219 u8 flags; 220 __be32 host_ctx_id; 221 __be64 host_cookie __packed; 222 __be64 flow_version __packed; 223 __be32 shortcut; 224 }; 225 226 struct nfp_fl_stats { 227 u64 pkts; 228 u64 bytes; 229 u64 used; 230 }; 231 232 struct nfp_fl_payload { 233 struct nfp_fl_rule_metadata meta; 234 unsigned long tc_flower_cookie; 235 struct rhash_head fl_node; 236 struct rcu_head rcu; 237 __be32 nfp_tun_ipv4_addr; 238 struct net_device *ingress_dev; 239 char *unmasked_data; 240 char *mask_data; 241 char *action_data; 242 }; 243 244 extern const struct rhashtable_params nfp_flower_table_params; 245 246 struct nfp_fl_stats_frame { 247 __be32 stats_con_id; 248 __be32 pkt_count; 249 __be64 byte_count; 250 __be64 stats_cookie; 251 }; 252 253 int nfp_flower_metadata_init(struct nfp_app *app, u64 host_ctx_count, 254 unsigned int host_ctx_split); 255 void nfp_flower_metadata_cleanup(struct nfp_app *app); 256 257 int nfp_flower_setup_tc(struct nfp_app *app, struct net_device *netdev, 258 enum tc_setup_type type, void *type_data); 259 int nfp_flower_compile_flow_match(struct nfp_app *app, 260 struct tc_cls_flower_offload *flow, 261 struct nfp_fl_key_ls *key_ls, 262 struct net_device *netdev, 263 struct nfp_fl_payload *nfp_flow, 264 enum nfp_flower_tun_type tun_type); 265 int nfp_flower_compile_action(struct nfp_app *app, 266 struct tc_cls_flower_offload *flow, 267 struct net_device *netdev, 268 struct nfp_fl_payload *nfp_flow); 269 int nfp_compile_flow_metadata(struct nfp_app *app, 270 struct tc_cls_flower_offload *flow, 271 struct nfp_fl_payload *nfp_flow, 272 struct net_device *netdev); 273 int nfp_modify_flow_metadata(struct nfp_app *app, 274 struct nfp_fl_payload *nfp_flow); 275 276 struct nfp_fl_payload * 277 nfp_flower_search_fl_table(struct nfp_app *app, unsigned long tc_flower_cookie, 278 struct net_device *netdev); 279 struct nfp_fl_payload * 280 nfp_flower_remove_fl_table(struct nfp_app *app, unsigned long tc_flower_cookie); 281 282 void nfp_flower_rx_flow_stats(struct nfp_app *app, struct sk_buff *skb); 283 284 int nfp_tunnel_config_start(struct nfp_app *app); 285 void nfp_tunnel_config_stop(struct nfp_app *app); 286 int nfp_tunnel_mac_event_handler(struct nfp_app *app, 287 struct net_device *netdev, 288 unsigned long event, void *ptr); 289 void nfp_tunnel_del_ipv4_off(struct nfp_app *app, __be32 ipv4); 290 void nfp_tunnel_add_ipv4_off(struct nfp_app *app, __be32 ipv4); 291 void nfp_tunnel_request_route(struct nfp_app *app, struct sk_buff *skb); 292 void nfp_tunnel_keep_alive(struct nfp_app *app, struct sk_buff *skb); 293 void nfp_flower_lag_init(struct nfp_fl_lag *lag); 294 void nfp_flower_lag_cleanup(struct nfp_fl_lag *lag); 295 int nfp_flower_lag_reset(struct nfp_fl_lag *lag); 296 int nfp_flower_lag_netdev_event(struct nfp_flower_priv *priv, 297 struct net_device *netdev, 298 unsigned long event, void *ptr); 299 bool nfp_flower_lag_unprocessed_msg(struct nfp_app *app, struct sk_buff *skb); 300 int nfp_flower_lag_populate_pre_action(struct nfp_app *app, 301 struct net_device *master, 302 struct nfp_fl_pre_lag *pre_act); 303 int nfp_flower_lag_get_output_id(struct nfp_app *app, 304 struct net_device *master); 305 int nfp_flower_reg_indir_block_handler(struct nfp_app *app, 306 struct net_device *netdev, 307 unsigned long event); 308 309 void 310 __nfp_flower_non_repr_priv_get(struct nfp_flower_non_repr_priv *non_repr_priv); 311 struct nfp_flower_non_repr_priv * 312 nfp_flower_non_repr_priv_get(struct nfp_app *app, struct net_device *netdev); 313 void 314 __nfp_flower_non_repr_priv_put(struct nfp_flower_non_repr_priv *non_repr_priv); 315 void 316 nfp_flower_non_repr_priv_put(struct nfp_app *app, struct net_device *netdev); 317 #endif 318