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_STATS_CTX_DONT_CARE cpu_to_be32(0xffffffff) 24 #define NFP_FL_STATS_ELEM_RS FIELD_SIZEOF(struct nfp_fl_stats_id, \ 25 init_unalloc) 26 #define NFP_FLOWER_MASK_ENTRY_RS 256 27 #define NFP_FLOWER_MASK_ELEMENT_RS 1 28 #define NFP_FLOWER_MASK_HASH_BITS 10 29 30 #define NFP_FL_META_FLAG_MANAGE_MASK BIT(7) 31 32 #define NFP_FL_MASK_REUSE_TIME_NS 40000 33 #define NFP_FL_MASK_ID_LOCATION 1 34 35 #define NFP_FL_VXLAN_PORT 4789 36 #define NFP_FL_GENEVE_PORT 6081 37 38 /* Extra features bitmap. */ 39 #define NFP_FL_FEATS_GENEVE BIT(0) 40 #define NFP_FL_NBI_MTU_SETTING BIT(1) 41 #define NFP_FL_FEATS_GENEVE_OPT BIT(2) 42 #define NFP_FL_FEATS_VLAN_PCP BIT(3) 43 #define NFP_FL_FEATS_LAG BIT(31) 44 45 struct nfp_fl_mask_id { 46 struct circ_buf mask_id_free_list; 47 ktime_t *last_used; 48 u8 init_unallocated; 49 }; 50 51 struct nfp_fl_stats_id { 52 struct circ_buf free_list; 53 u32 init_unalloc; 54 u8 repeated_em_count; 55 }; 56 57 /** 58 * struct nfp_mtu_conf - manage MTU setting 59 * @portnum: NFP port number of repr with requested MTU change 60 * @requested_val: MTU value requested for repr 61 * @ack: Received ack that MTU has been correctly set 62 * @wait_q: Wait queue for MTU acknowledgements 63 * @lock: Lock for setting/reading MTU variables 64 */ 65 struct nfp_mtu_conf { 66 u32 portnum; 67 unsigned int requested_val; 68 bool ack; 69 wait_queue_head_t wait_q; 70 spinlock_t lock; 71 }; 72 73 /** 74 * struct nfp_fl_lag - Flower APP priv data for link aggregation 75 * @lag_nb: Notifier to track master/slave events 76 * @work: Work queue for writing configs to the HW 77 * @lock: Lock to protect lag_group_list 78 * @group_list: List of all master/slave groups offloaded 79 * @ida_handle: IDA to handle group ids 80 * @pkt_num: Incremented for each config packet sent 81 * @batch_ver: Incremented for each batch of config packets 82 * @global_inst: Instance allocator for groups 83 * @rst_cfg: Marker to reset HW LAG config 84 * @retrans_skbs: Cmsgs that could not be processed by HW and require 85 * retransmission 86 */ 87 struct nfp_fl_lag { 88 struct notifier_block lag_nb; 89 struct delayed_work work; 90 struct mutex lock; 91 struct list_head group_list; 92 struct ida ida_handle; 93 unsigned int pkt_num; 94 unsigned int batch_ver; 95 u8 global_inst; 96 bool rst_cfg; 97 struct sk_buff_head retrans_skbs; 98 }; 99 100 /** 101 * struct nfp_flower_priv - Flower APP per-vNIC priv data 102 * @app: Back pointer to app 103 * @nn: Pointer to vNIC 104 * @mask_id_seed: Seed used for mask hash table 105 * @flower_version: HW version of flower 106 * @flower_ext_feats: Bitmap of extra features the HW supports 107 * @stats_ids: List of free stats ids 108 * @mask_ids: List of free mask ids 109 * @mask_table: Hash table used to store masks 110 * @stats_ring_size: Maximum number of allowed stats ids 111 * @flow_table: Hash table used to store flower rules 112 * @stats: Stored stats updates for flower rules 113 * @stats_lock: Lock for flower rule stats updates 114 * @cmsg_work: Workqueue for control messages processing 115 * @cmsg_skbs_high: List of higher priority skbs for control message 116 * processing 117 * @cmsg_skbs_low: List of lower priority skbs for control message 118 * processing 119 * @nfp_mac_off_list: List of MAC addresses to offload 120 * @nfp_mac_index_list: List of unique 8-bit indexes for non NFP netdevs 121 * @nfp_ipv4_off_list: List of IPv4 addresses to offload 122 * @nfp_neigh_off_list: List of neighbour offloads 123 * @nfp_mac_off_lock: Lock for the MAC address list 124 * @nfp_mac_index_lock: Lock for the MAC index list 125 * @nfp_ipv4_off_lock: Lock for the IPv4 address list 126 * @nfp_neigh_off_lock: Lock for the neighbour address list 127 * @nfp_mac_off_ids: IDA to manage id assignment for offloaded macs 128 * @nfp_mac_off_count: Number of MACs in address list 129 * @nfp_tun_mac_nb: Notifier to monitor link state 130 * @nfp_tun_neigh_nb: Notifier to monitor neighbour state 131 * @reify_replies: atomically stores the number of replies received 132 * from firmware for repr reify 133 * @reify_wait_queue: wait queue for repr reify response counting 134 * @mtu_conf: Configuration of repr MTU value 135 * @nfp_lag: Link aggregation data block 136 */ 137 struct nfp_flower_priv { 138 struct nfp_app *app; 139 struct nfp_net *nn; 140 u32 mask_id_seed; 141 u64 flower_version; 142 u64 flower_ext_feats; 143 struct nfp_fl_stats_id stats_ids; 144 struct nfp_fl_mask_id mask_ids; 145 DECLARE_HASHTABLE(mask_table, NFP_FLOWER_MASK_HASH_BITS); 146 u32 stats_ring_size; 147 struct rhashtable flow_table; 148 struct nfp_fl_stats *stats; 149 spinlock_t stats_lock; /* lock stats */ 150 struct work_struct cmsg_work; 151 struct sk_buff_head cmsg_skbs_high; 152 struct sk_buff_head cmsg_skbs_low; 153 struct list_head nfp_mac_off_list; 154 struct list_head nfp_mac_index_list; 155 struct list_head nfp_ipv4_off_list; 156 struct list_head nfp_neigh_off_list; 157 struct mutex nfp_mac_off_lock; 158 struct mutex nfp_mac_index_lock; 159 struct mutex nfp_ipv4_off_lock; 160 spinlock_t nfp_neigh_off_lock; 161 struct ida nfp_mac_off_ids; 162 int nfp_mac_off_count; 163 struct notifier_block nfp_tun_mac_nb; 164 struct notifier_block nfp_tun_neigh_nb; 165 atomic_t reify_replies; 166 wait_queue_head_t reify_wait_queue; 167 struct nfp_mtu_conf mtu_conf; 168 struct nfp_fl_lag nfp_lag; 169 }; 170 171 /** 172 * struct nfp_flower_repr_priv - Flower APP per-repr priv data 173 * @lag_port_flags: Extended port flags to record lag state of repr 174 */ 175 struct nfp_flower_repr_priv { 176 unsigned long lag_port_flags; 177 }; 178 179 struct nfp_fl_key_ls { 180 u32 key_layer_two; 181 u8 key_layer; 182 int key_size; 183 }; 184 185 struct nfp_fl_rule_metadata { 186 u8 key_len; 187 u8 mask_len; 188 u8 act_len; 189 u8 flags; 190 __be32 host_ctx_id; 191 __be64 host_cookie __packed; 192 __be64 flow_version __packed; 193 __be32 shortcut; 194 }; 195 196 struct nfp_fl_stats { 197 u64 pkts; 198 u64 bytes; 199 u64 used; 200 }; 201 202 struct nfp_fl_payload { 203 struct nfp_fl_rule_metadata meta; 204 unsigned long tc_flower_cookie; 205 struct rhash_head fl_node; 206 struct rcu_head rcu; 207 __be32 nfp_tun_ipv4_addr; 208 struct net_device *ingress_dev; 209 char *unmasked_data; 210 char *mask_data; 211 char *action_data; 212 bool ingress_offload; 213 }; 214 215 extern const struct rhashtable_params nfp_flower_table_params; 216 217 struct nfp_fl_stats_frame { 218 __be32 stats_con_id; 219 __be32 pkt_count; 220 __be64 byte_count; 221 __be64 stats_cookie; 222 }; 223 224 int nfp_flower_metadata_init(struct nfp_app *app, u64 host_ctx_count); 225 void nfp_flower_metadata_cleanup(struct nfp_app *app); 226 227 int nfp_flower_setup_tc(struct nfp_app *app, struct net_device *netdev, 228 enum tc_setup_type type, void *type_data); 229 int nfp_flower_compile_flow_match(struct tc_cls_flower_offload *flow, 230 struct nfp_fl_key_ls *key_ls, 231 struct net_device *netdev, 232 struct nfp_fl_payload *nfp_flow, 233 enum nfp_flower_tun_type tun_type); 234 int nfp_flower_compile_action(struct nfp_app *app, 235 struct tc_cls_flower_offload *flow, 236 struct net_device *netdev, 237 struct nfp_fl_payload *nfp_flow); 238 int nfp_compile_flow_metadata(struct nfp_app *app, 239 struct tc_cls_flower_offload *flow, 240 struct nfp_fl_payload *nfp_flow, 241 struct net_device *netdev); 242 int nfp_modify_flow_metadata(struct nfp_app *app, 243 struct nfp_fl_payload *nfp_flow); 244 245 struct nfp_fl_payload * 246 nfp_flower_search_fl_table(struct nfp_app *app, unsigned long tc_flower_cookie, 247 struct net_device *netdev, __be32 host_ctx); 248 struct nfp_fl_payload * 249 nfp_flower_remove_fl_table(struct nfp_app *app, unsigned long tc_flower_cookie); 250 251 void nfp_flower_rx_flow_stats(struct nfp_app *app, struct sk_buff *skb); 252 253 int nfp_tunnel_config_start(struct nfp_app *app); 254 void nfp_tunnel_config_stop(struct nfp_app *app); 255 void nfp_tunnel_write_macs(struct nfp_app *app); 256 void nfp_tunnel_del_ipv4_off(struct nfp_app *app, __be32 ipv4); 257 void nfp_tunnel_add_ipv4_off(struct nfp_app *app, __be32 ipv4); 258 void nfp_tunnel_request_route(struct nfp_app *app, struct sk_buff *skb); 259 void nfp_tunnel_keep_alive(struct nfp_app *app, struct sk_buff *skb); 260 int nfp_flower_setup_tc_egress_cb(enum tc_setup_type type, void *type_data, 261 void *cb_priv); 262 void nfp_flower_lag_init(struct nfp_fl_lag *lag); 263 void nfp_flower_lag_cleanup(struct nfp_fl_lag *lag); 264 int nfp_flower_lag_reset(struct nfp_fl_lag *lag); 265 bool nfp_flower_lag_unprocessed_msg(struct nfp_app *app, struct sk_buff *skb); 266 int nfp_flower_lag_populate_pre_action(struct nfp_app *app, 267 struct net_device *master, 268 struct nfp_fl_pre_lag *pre_act); 269 int nfp_flower_lag_get_output_id(struct nfp_app *app, 270 struct net_device *master); 271 272 #endif 273