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_VLAN_PCP BIT(3) 74 #define NFP_FL_FEATS_LAG BIT(31) 75 76 struct nfp_fl_mask_id { 77 struct circ_buf mask_id_free_list; 78 ktime_t *last_used; 79 u8 init_unallocated; 80 }; 81 82 struct nfp_fl_stats_id { 83 struct circ_buf free_list; 84 u32 init_unalloc; 85 u8 repeated_em_count; 86 }; 87 88 /** 89 * struct nfp_mtu_conf - manage MTU setting 90 * @portnum: NFP port number of repr with requested MTU change 91 * @requested_val: MTU value requested for repr 92 * @ack: Received ack that MTU has been correctly set 93 * @wait_q: Wait queue for MTU acknowledgements 94 * @lock: Lock for setting/reading MTU variables 95 */ 96 struct nfp_mtu_conf { 97 u32 portnum; 98 unsigned int requested_val; 99 bool ack; 100 wait_queue_head_t wait_q; 101 spinlock_t lock; 102 }; 103 104 /** 105 * struct nfp_fl_lag - Flower APP priv data for link aggregation 106 * @lag_nb: Notifier to track master/slave events 107 * @work: Work queue for writing configs to the HW 108 * @lock: Lock to protect lag_group_list 109 * @group_list: List of all master/slave groups offloaded 110 * @ida_handle: IDA to handle group ids 111 * @pkt_num: Incremented for each config packet sent 112 * @batch_ver: Incremented for each batch of config packets 113 * @global_inst: Instance allocator for groups 114 * @rst_cfg: Marker to reset HW LAG config 115 * @retrans_skbs: Cmsgs that could not be processed by HW and require 116 * retransmission 117 */ 118 struct nfp_fl_lag { 119 struct notifier_block lag_nb; 120 struct delayed_work work; 121 struct mutex lock; 122 struct list_head group_list; 123 struct ida ida_handle; 124 unsigned int pkt_num; 125 unsigned int batch_ver; 126 u8 global_inst; 127 bool rst_cfg; 128 struct sk_buff_head retrans_skbs; 129 }; 130 131 /** 132 * struct nfp_flower_priv - Flower APP per-vNIC priv data 133 * @app: Back pointer to app 134 * @nn: Pointer to vNIC 135 * @mask_id_seed: Seed used for mask hash table 136 * @flower_version: HW version of flower 137 * @flower_ext_feats: Bitmap of extra features the HW supports 138 * @stats_ids: List of free stats ids 139 * @mask_ids: List of free mask ids 140 * @mask_table: Hash table used to store masks 141 * @flow_table: Hash table used to store flower rules 142 * @cmsg_work: Workqueue for control messages processing 143 * @cmsg_skbs_high: List of higher priority skbs for control message 144 * processing 145 * @cmsg_skbs_low: List of lower priority skbs for control message 146 * processing 147 * @nfp_mac_off_list: List of MAC addresses to offload 148 * @nfp_mac_index_list: List of unique 8-bit indexes for non NFP netdevs 149 * @nfp_ipv4_off_list: List of IPv4 addresses to offload 150 * @nfp_neigh_off_list: List of neighbour offloads 151 * @nfp_mac_off_lock: Lock for the MAC address list 152 * @nfp_mac_index_lock: Lock for the MAC index list 153 * @nfp_ipv4_off_lock: Lock for the IPv4 address list 154 * @nfp_neigh_off_lock: Lock for the neighbour address list 155 * @nfp_mac_off_ids: IDA to manage id assignment for offloaded macs 156 * @nfp_mac_off_count: Number of MACs in address list 157 * @nfp_tun_mac_nb: Notifier to monitor link state 158 * @nfp_tun_neigh_nb: Notifier to monitor neighbour state 159 * @reify_replies: atomically stores the number of replies received 160 * from firmware for repr reify 161 * @reify_wait_queue: wait queue for repr reify response counting 162 * @mtu_conf: Configuration of repr MTU value 163 * @nfp_lag: Link aggregation data block 164 */ 165 struct nfp_flower_priv { 166 struct nfp_app *app; 167 struct nfp_net *nn; 168 u32 mask_id_seed; 169 u64 flower_version; 170 u64 flower_ext_feats; 171 struct nfp_fl_stats_id stats_ids; 172 struct nfp_fl_mask_id mask_ids; 173 DECLARE_HASHTABLE(mask_table, NFP_FLOWER_MASK_HASH_BITS); 174 DECLARE_HASHTABLE(flow_table, NFP_FLOWER_HASH_BITS); 175 struct work_struct cmsg_work; 176 struct sk_buff_head cmsg_skbs_high; 177 struct sk_buff_head cmsg_skbs_low; 178 struct list_head nfp_mac_off_list; 179 struct list_head nfp_mac_index_list; 180 struct list_head nfp_ipv4_off_list; 181 struct list_head nfp_neigh_off_list; 182 struct mutex nfp_mac_off_lock; 183 struct mutex nfp_mac_index_lock; 184 struct mutex nfp_ipv4_off_lock; 185 spinlock_t nfp_neigh_off_lock; 186 struct ida nfp_mac_off_ids; 187 int nfp_mac_off_count; 188 struct notifier_block nfp_tun_mac_nb; 189 struct notifier_block nfp_tun_neigh_nb; 190 atomic_t reify_replies; 191 wait_queue_head_t reify_wait_queue; 192 struct nfp_mtu_conf mtu_conf; 193 struct nfp_fl_lag nfp_lag; 194 }; 195 196 /** 197 * struct nfp_flower_repr_priv - Flower APP per-repr priv data 198 * @lag_port_flags: Extended port flags to record lag state of repr 199 */ 200 struct nfp_flower_repr_priv { 201 unsigned long lag_port_flags; 202 }; 203 204 struct nfp_fl_key_ls { 205 u32 key_layer_two; 206 u8 key_layer; 207 int key_size; 208 }; 209 210 struct nfp_fl_rule_metadata { 211 u8 key_len; 212 u8 mask_len; 213 u8 act_len; 214 u8 flags; 215 __be32 host_ctx_id; 216 __be64 host_cookie __packed; 217 __be64 flow_version __packed; 218 __be32 shortcut; 219 }; 220 221 struct nfp_fl_stats { 222 u64 pkts; 223 u64 bytes; 224 u64 used; 225 }; 226 227 struct nfp_fl_payload { 228 struct nfp_fl_rule_metadata meta; 229 unsigned long tc_flower_cookie; 230 struct hlist_node link; 231 struct rcu_head rcu; 232 spinlock_t lock; /* lock stats */ 233 struct nfp_fl_stats stats; 234 __be32 nfp_tun_ipv4_addr; 235 struct net_device *ingress_dev; 236 char *unmasked_data; 237 char *mask_data; 238 char *action_data; 239 bool ingress_offload; 240 }; 241 242 struct nfp_fl_stats_frame { 243 __be32 stats_con_id; 244 __be32 pkt_count; 245 __be64 byte_count; 246 __be64 stats_cookie; 247 }; 248 249 int nfp_flower_metadata_init(struct nfp_app *app); 250 void nfp_flower_metadata_cleanup(struct nfp_app *app); 251 252 int nfp_flower_setup_tc(struct nfp_app *app, struct net_device *netdev, 253 enum tc_setup_type type, void *type_data); 254 int nfp_flower_compile_flow_match(struct tc_cls_flower_offload *flow, 255 struct nfp_fl_key_ls *key_ls, 256 struct net_device *netdev, 257 struct nfp_fl_payload *nfp_flow, 258 enum nfp_flower_tun_type tun_type); 259 int nfp_flower_compile_action(struct nfp_app *app, 260 struct tc_cls_flower_offload *flow, 261 struct net_device *netdev, 262 struct nfp_fl_payload *nfp_flow); 263 int nfp_compile_flow_metadata(struct nfp_app *app, 264 struct tc_cls_flower_offload *flow, 265 struct nfp_fl_payload *nfp_flow, 266 struct net_device *netdev); 267 int nfp_modify_flow_metadata(struct nfp_app *app, 268 struct nfp_fl_payload *nfp_flow); 269 270 struct nfp_fl_payload * 271 nfp_flower_search_fl_table(struct nfp_app *app, unsigned long tc_flower_cookie, 272 struct net_device *netdev, __be32 host_ctx); 273 struct nfp_fl_payload * 274 nfp_flower_remove_fl_table(struct nfp_app *app, unsigned long tc_flower_cookie); 275 276 void nfp_flower_rx_flow_stats(struct nfp_app *app, struct sk_buff *skb); 277 278 int nfp_tunnel_config_start(struct nfp_app *app); 279 void nfp_tunnel_config_stop(struct nfp_app *app); 280 void nfp_tunnel_write_macs(struct nfp_app *app); 281 void nfp_tunnel_del_ipv4_off(struct nfp_app *app, __be32 ipv4); 282 void nfp_tunnel_add_ipv4_off(struct nfp_app *app, __be32 ipv4); 283 void nfp_tunnel_request_route(struct nfp_app *app, struct sk_buff *skb); 284 void nfp_tunnel_keep_alive(struct nfp_app *app, struct sk_buff *skb); 285 int nfp_flower_setup_tc_egress_cb(enum tc_setup_type type, void *type_data, 286 void *cb_priv); 287 void nfp_flower_lag_init(struct nfp_fl_lag *lag); 288 void nfp_flower_lag_cleanup(struct nfp_fl_lag *lag); 289 int nfp_flower_lag_reset(struct nfp_fl_lag *lag); 290 bool nfp_flower_lag_unprocessed_msg(struct nfp_app *app, struct sk_buff *skb); 291 int nfp_flower_lag_populate_pre_action(struct nfp_app *app, 292 struct net_device *master, 293 struct nfp_fl_pre_lag *pre_act); 294 int nfp_flower_lag_get_output_id(struct nfp_app *app, 295 struct net_device *master); 296 297 #endif 298
