1 /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
2 /* Copyright (C) 2017-2018 Netronome Systems, Inc. */
4 #ifndef __NFP_FLOWER_H__
5 #define __NFP_FLOWER_H__ 1
8 #include "../nfp_net.h"
10 #include <linux/circ_buf.h>
11 #include <linux/hashtable.h>
12 #include <linux/rhashtable.h>
13 #include <linux/time64.h>
14 #include <linux/types.h>
15 #include <net/pkt_cls.h>
17 #include <linux/workqueue.h>
18 #include <linux/idr.h>
20 struct nfp_fl_pre_lag;
24 #define NFP_FL_STAT_ID_MU_NUM GENMASK(31, 22)
25 #define NFP_FL_STAT_ID_STAT GENMASK(21, 0)
27 #define NFP_FL_STATS_ELEM_RS sizeof_field(struct nfp_fl_stats_id, \
29 #define NFP_FLOWER_MASK_ENTRY_RS 256
30 #define NFP_FLOWER_MASK_ELEMENT_RS 1
31 #define NFP_FLOWER_MASK_HASH_BITS 10
33 #define NFP_FL_META_FLAG_MANAGE_MASK BIT(7)
35 #define NFP_FL_MASK_REUSE_TIME_NS 40000
36 #define NFP_FL_MASK_ID_LOCATION 1
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_VF_RLIM BIT(4)
44 #define NFP_FL_FEATS_FLOW_MOD BIT(5)
45 #define NFP_FL_FEATS_PRE_TUN_RULES BIT(6)
46 #define NFP_FL_FEATS_IPV6_TUN BIT(7)
47 #define NFP_FL_FEATS_HOST_ACK BIT(31)
49 #define NFP_FL_ENABLE_FLOW_MERGE BIT(0)
50 #define NFP_FL_ENABLE_LAG BIT(1)
52 #define NFP_FL_FEATS_HOST \
53 (NFP_FL_FEATS_GENEVE | \
54 NFP_FL_NBI_MTU_SETTING | \
55 NFP_FL_FEATS_GENEVE_OPT | \
56 NFP_FL_FEATS_VLAN_PCP | \
57 NFP_FL_FEATS_VF_RLIM | \
58 NFP_FL_FEATS_FLOW_MOD | \
59 NFP_FL_FEATS_PRE_TUN_RULES | \
60 NFP_FL_FEATS_IPV6_TUN)
62 struct nfp_fl_mask_id {
63 struct circ_buf mask_id_free_list;
68 struct nfp_fl_stats_id {
69 struct circ_buf free_list;
75 * struct nfp_fl_tunnel_offloads - priv data for tunnel offloads
76 * @offloaded_macs: Hashtable of the offloaded MAC addresses
77 * @ipv4_off_list: List of IPv4 addresses to offload
78 * @ipv6_off_list: List of IPv6 addresses to offload
79 * @neigh_off_list_v4: List of IPv4 neighbour offloads
80 * @neigh_off_list_v6: List of IPv6 neighbour offloads
81 * @ipv4_off_lock: Lock for the IPv4 address list
82 * @ipv6_off_lock: Lock for the IPv6 address list
83 * @neigh_off_lock_v4: Lock for the IPv4 neighbour address list
84 * @neigh_off_lock_v6: Lock for the IPv6 neighbour address list
85 * @mac_off_ids: IDA to manage id assignment for offloaded MACs
86 * @neigh_nb: Notifier to monitor neighbour state
88 struct nfp_fl_tunnel_offloads {
89 struct rhashtable offloaded_macs;
90 struct list_head ipv4_off_list;
91 struct list_head ipv6_off_list;
92 struct list_head neigh_off_list_v4;
93 struct list_head neigh_off_list_v6;
94 struct mutex ipv4_off_lock;
95 struct mutex ipv6_off_lock;
96 spinlock_t neigh_off_lock_v4;
97 spinlock_t neigh_off_lock_v6;
98 struct ida mac_off_ids;
99 struct notifier_block neigh_nb;
103 * struct nfp_mtu_conf - manage MTU setting
104 * @portnum: NFP port number of repr with requested MTU change
105 * @requested_val: MTU value requested for repr
106 * @ack: Received ack that MTU has been correctly set
107 * @wait_q: Wait queue for MTU acknowledgements
108 * @lock: Lock for setting/reading MTU variables
110 struct nfp_mtu_conf {
112 unsigned int requested_val;
114 wait_queue_head_t wait_q;
119 * struct nfp_fl_lag - Flower APP priv data for link aggregation
120 * @work: Work queue for writing configs to the HW
121 * @lock: Lock to protect lag_group_list
122 * @group_list: List of all master/slave groups offloaded
123 * @ida_handle: IDA to handle group ids
124 * @pkt_num: Incremented for each config packet sent
125 * @batch_ver: Incremented for each batch of config packets
126 * @global_inst: Instance allocator for groups
127 * @rst_cfg: Marker to reset HW LAG config
128 * @retrans_skbs: Cmsgs that could not be processed by HW and require
132 struct delayed_work work;
134 struct list_head group_list;
135 struct ida ida_handle;
136 unsigned int pkt_num;
137 unsigned int batch_ver;
140 struct sk_buff_head retrans_skbs;
144 * struct nfp_fl_internal_ports - Flower APP priv data for additional ports
145 * @port_ids: Assignment of ids to any additional ports
146 * @lock: Lock for extra ports list
148 struct nfp_fl_internal_ports {
154 * struct nfp_flower_priv - Flower APP per-vNIC priv data
155 * @app: Back pointer to app
156 * @nn: Pointer to vNIC
157 * @mask_id_seed: Seed used for mask hash table
158 * @flower_version: HW version of flower
159 * @flower_ext_feats: Bitmap of extra features the HW supports
160 * @flower_en_feats: Bitmap of features enabled by HW
161 * @stats_ids: List of free stats ids
162 * @mask_ids: List of free mask ids
163 * @mask_table: Hash table used to store masks
164 * @stats_ring_size: Maximum number of allowed stats ids
165 * @flow_table: Hash table used to store flower rules
166 * @stats: Stored stats updates for flower rules
167 * @stats_lock: Lock for flower rule stats updates
168 * @stats_ctx_table: Hash table to map stats contexts to its flow rule
169 * @cmsg_work: Workqueue for control messages processing
170 * @cmsg_skbs_high: List of higher priority skbs for control message
172 * @cmsg_skbs_low: List of lower priority skbs for control message
174 * @tun: Tunnel offload data
175 * @reify_replies: atomically stores the number of replies received
176 * from firmware for repr reify
177 * @reify_wait_queue: wait queue for repr reify response counting
178 * @mtu_conf: Configuration of repr MTU value
179 * @nfp_lag: Link aggregation data block
180 * @indr_block_cb_priv: List of priv data passed to indirect block cbs
181 * @non_repr_priv: List of offloaded non-repr ports and their priv data
182 * @active_mem_unit: Current active memory unit for flower rules
183 * @total_mem_units: Total number of available memory units for flower rules
184 * @internal_ports: Internal port ids used in offloaded rules
185 * @qos_stats_work: Workqueue for qos stats processing
186 * @qos_rate_limiters: Current active qos rate limiters
187 * @qos_stats_lock: Lock on qos stats updates
188 * @pre_tun_rule_cnt: Number of pre-tunnel rules offloaded
190 struct nfp_flower_priv {
195 u64 flower_ext_feats;
197 struct nfp_fl_stats_id stats_ids;
198 struct nfp_fl_mask_id mask_ids;
199 DECLARE_HASHTABLE(mask_table, NFP_FLOWER_MASK_HASH_BITS);
201 struct rhashtable flow_table;
202 struct nfp_fl_stats *stats;
203 spinlock_t stats_lock; /* lock stats */
204 struct rhashtable stats_ctx_table;
205 struct work_struct cmsg_work;
206 struct sk_buff_head cmsg_skbs_high;
207 struct sk_buff_head cmsg_skbs_low;
208 struct nfp_fl_tunnel_offloads tun;
209 atomic_t reify_replies;
210 wait_queue_head_t reify_wait_queue;
211 struct nfp_mtu_conf mtu_conf;
212 struct nfp_fl_lag nfp_lag;
213 struct list_head indr_block_cb_priv;
214 struct list_head non_repr_priv;
215 unsigned int active_mem_unit;
216 unsigned int total_mem_units;
217 struct nfp_fl_internal_ports internal_ports;
218 struct delayed_work qos_stats_work;
219 unsigned int qos_rate_limiters;
220 spinlock_t qos_stats_lock; /* Protect the qos stats */
221 int pre_tun_rule_cnt;
225 * struct nfp_fl_qos - Flower APP priv data for quality of service
226 * @netdev_port_id: NFP port number of repr with qos info
227 * @curr_stats: Currently stored stats updates for qos info
228 * @prev_stats: Previously stored updates for qos info
229 * @last_update: Stored time when last stats were updated
233 struct nfp_stat_pair curr_stats;
234 struct nfp_stat_pair prev_stats;
239 * struct nfp_flower_repr_priv - Flower APP per-repr priv data
240 * @nfp_repr: Back pointer to nfp_repr
241 * @lag_port_flags: Extended port flags to record lag state of repr
242 * @mac_offloaded: Flag indicating a MAC address is offloaded for repr
243 * @offloaded_mac_addr: MAC address that has been offloaded for repr
244 * @block_shared: Flag indicating if offload applies to shared blocks
245 * @mac_list: List entry of reprs that share the same offloaded MAC
246 * @qos_table: Stored info on filters implementing qos
247 * @on_bridge: Indicates if the repr is attached to a bridge
249 struct nfp_flower_repr_priv {
250 struct nfp_repr *nfp_repr;
251 unsigned long lag_port_flags;
253 u8 offloaded_mac_addr[ETH_ALEN];
255 struct list_head mac_list;
256 struct nfp_fl_qos qos_table;
261 * struct nfp_flower_non_repr_priv - Priv data for non-repr offloaded ports
262 * @list: List entry of offloaded reprs
263 * @netdev: Pointer to non-repr net_device
264 * @ref_count: Number of references held for this priv data
265 * @mac_offloaded: Flag indicating a MAC address is offloaded for device
266 * @offloaded_mac_addr: MAC address that has been offloaded for dev
268 struct nfp_flower_non_repr_priv {
269 struct list_head list;
270 struct net_device *netdev;
273 u8 offloaded_mac_addr[ETH_ALEN];
276 struct nfp_fl_key_ls {
282 struct nfp_fl_rule_metadata {
288 __be64 host_cookie __packed;
289 __be64 flow_version __packed;
293 struct nfp_fl_stats {
300 * struct nfp_ipv6_addr_entry - cached IPv6 addresses
301 * @ipv6_addr: IP address
302 * @ref_count: number of rules currently using this IP
303 * @list: list pointer
305 struct nfp_ipv6_addr_entry {
306 struct in6_addr ipv6_addr;
308 struct list_head list;
311 struct nfp_fl_payload {
312 struct nfp_fl_rule_metadata meta;
313 unsigned long tc_flower_cookie;
314 struct rhash_head fl_node;
316 __be32 nfp_tun_ipv4_addr;
317 struct nfp_ipv6_addr_entry *nfp_tun_ipv6;
318 struct net_device *ingress_dev;
322 struct list_head linked_flows;
325 struct net_device *dev;
331 struct nfp_fl_payload_link {
332 /* A link contains a pointer to a merge flow and an associated sub_flow.
333 * Each merge flow will feature in 2 links to its underlying sub_flows.
334 * A sub_flow will have at least 1 link to a merge flow or more if it
335 * has been used to create multiple merge flows.
337 * For a merge flow, 'linked_flows' in its nfp_fl_payload struct lists
338 * all links to sub_flows (sub_flow.flow) via merge.list.
339 * For a sub_flow, 'linked_flows' gives all links to merge flows it has
340 * formed (merge_flow.flow) via sub_flow.list.
343 struct list_head list;
344 struct nfp_fl_payload *flow;
345 } merge_flow, sub_flow;
348 extern const struct rhashtable_params nfp_flower_table_params;
350 struct nfp_fl_stats_frame {
358 nfp_flower_internal_port_can_offload(struct nfp_app *app,
359 struct net_device *netdev)
361 struct nfp_flower_priv *app_priv = app->priv;
363 if (!(app_priv->flower_en_feats & NFP_FL_ENABLE_FLOW_MERGE))
365 if (!netdev->rtnl_link_ops)
367 if (!strcmp(netdev->rtnl_link_ops->kind, "openvswitch"))
373 /* The address of the merged flow acts as its cookie.
374 * Cookies supplied to us by TC flower are also addresses to allocated
375 * memory and thus this scheme should not generate any collisions.
377 static inline bool nfp_flower_is_merge_flow(struct nfp_fl_payload *flow_pay)
379 return flow_pay->tc_flower_cookie == (unsigned long)flow_pay;
382 static inline bool nfp_flower_is_supported_bridge(struct net_device *netdev)
384 return netif_is_ovs_master(netdev);
387 int nfp_flower_metadata_init(struct nfp_app *app, u64 host_ctx_count,
388 unsigned int host_ctx_split);
389 void nfp_flower_metadata_cleanup(struct nfp_app *app);
391 int nfp_flower_setup_tc(struct nfp_app *app, struct net_device *netdev,
392 enum tc_setup_type type, void *type_data);
393 int nfp_flower_merge_offloaded_flows(struct nfp_app *app,
394 struct nfp_fl_payload *sub_flow1,
395 struct nfp_fl_payload *sub_flow2);
396 int nfp_flower_compile_flow_match(struct nfp_app *app,
397 struct flow_cls_offload *flow,
398 struct nfp_fl_key_ls *key_ls,
399 struct net_device *netdev,
400 struct nfp_fl_payload *nfp_flow,
401 enum nfp_flower_tun_type tun_type,
402 struct netlink_ext_ack *extack);
403 int nfp_flower_compile_action(struct nfp_app *app,
404 struct flow_cls_offload *flow,
405 struct net_device *netdev,
406 struct nfp_fl_payload *nfp_flow,
407 struct netlink_ext_ack *extack);
408 int nfp_compile_flow_metadata(struct nfp_app *app,
409 struct flow_cls_offload *flow,
410 struct nfp_fl_payload *nfp_flow,
411 struct net_device *netdev,
412 struct netlink_ext_ack *extack);
413 void __nfp_modify_flow_metadata(struct nfp_flower_priv *priv,
414 struct nfp_fl_payload *nfp_flow);
415 int nfp_modify_flow_metadata(struct nfp_app *app,
416 struct nfp_fl_payload *nfp_flow);
418 struct nfp_fl_payload *
419 nfp_flower_search_fl_table(struct nfp_app *app, unsigned long tc_flower_cookie,
420 struct net_device *netdev);
421 struct nfp_fl_payload *
422 nfp_flower_get_fl_payload_from_ctx(struct nfp_app *app, u32 ctx_id);
423 struct nfp_fl_payload *
424 nfp_flower_remove_fl_table(struct nfp_app *app, unsigned long tc_flower_cookie);
426 void nfp_flower_rx_flow_stats(struct nfp_app *app, struct sk_buff *skb);
428 int nfp_tunnel_config_start(struct nfp_app *app);
429 void nfp_tunnel_config_stop(struct nfp_app *app);
430 int nfp_tunnel_mac_event_handler(struct nfp_app *app,
431 struct net_device *netdev,
432 unsigned long event, void *ptr);
433 void nfp_tunnel_del_ipv4_off(struct nfp_app *app, __be32 ipv4);
434 void nfp_tunnel_add_ipv4_off(struct nfp_app *app, __be32 ipv4);
436 nfp_tunnel_put_ipv6_off(struct nfp_app *app, struct nfp_ipv6_addr_entry *entry);
437 struct nfp_ipv6_addr_entry *
438 nfp_tunnel_add_ipv6_off(struct nfp_app *app, struct in6_addr *ipv6);
439 void nfp_tunnel_request_route_v4(struct nfp_app *app, struct sk_buff *skb);
440 void nfp_tunnel_request_route_v6(struct nfp_app *app, struct sk_buff *skb);
441 void nfp_tunnel_keep_alive(struct nfp_app *app, struct sk_buff *skb);
442 void nfp_tunnel_keep_alive_v6(struct nfp_app *app, struct sk_buff *skb);
443 void nfp_flower_lag_init(struct nfp_fl_lag *lag);
444 void nfp_flower_lag_cleanup(struct nfp_fl_lag *lag);
445 int nfp_flower_lag_reset(struct nfp_fl_lag *lag);
446 int nfp_flower_lag_netdev_event(struct nfp_flower_priv *priv,
447 struct net_device *netdev,
448 unsigned long event, void *ptr);
449 bool nfp_flower_lag_unprocessed_msg(struct nfp_app *app, struct sk_buff *skb);
450 int nfp_flower_lag_populate_pre_action(struct nfp_app *app,
451 struct net_device *master,
452 struct nfp_fl_pre_lag *pre_act,
453 struct netlink_ext_ack *extack);
454 int nfp_flower_lag_get_output_id(struct nfp_app *app,
455 struct net_device *master);
456 void nfp_flower_qos_init(struct nfp_app *app);
457 void nfp_flower_qos_cleanup(struct nfp_app *app);
458 int nfp_flower_setup_qos_offload(struct nfp_app *app, struct net_device *netdev,
459 struct tc_cls_matchall_offload *flow);
460 void nfp_flower_stats_rlim_reply(struct nfp_app *app, struct sk_buff *skb);
461 int nfp_flower_indr_setup_tc_cb(struct net_device *netdev, void *cb_priv,
462 enum tc_setup_type type, void *type_data);
463 int nfp_flower_setup_indr_block_cb(enum tc_setup_type type, void *type_data,
467 __nfp_flower_non_repr_priv_get(struct nfp_flower_non_repr_priv *non_repr_priv);
468 struct nfp_flower_non_repr_priv *
469 nfp_flower_non_repr_priv_get(struct nfp_app *app, struct net_device *netdev);
471 __nfp_flower_non_repr_priv_put(struct nfp_flower_non_repr_priv *non_repr_priv);
473 nfp_flower_non_repr_priv_put(struct nfp_app *app, struct net_device *netdev);
474 u32 nfp_flower_get_port_id_from_netdev(struct nfp_app *app,
475 struct net_device *netdev);
476 int nfp_flower_xmit_pre_tun_flow(struct nfp_app *app,
477 struct nfp_fl_payload *flow);
478 int nfp_flower_xmit_pre_tun_del_flow(struct nfp_app *app,
479 struct nfp_fl_payload *flow);