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 FIELD_SIZEOF(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_FLOW_MERGE BIT(30)
48 #define NFP_FL_FEATS_LAG BIT(31)
50 struct nfp_fl_mask_id {
51 struct circ_buf mask_id_free_list;
56 struct nfp_fl_stats_id {
57 struct circ_buf free_list;
63 * struct nfp_fl_tunnel_offloads - priv data for tunnel offloads
64 * @offloaded_macs: Hashtable of the offloaded MAC addresses
65 * @ipv4_off_list: List of IPv4 addresses to offload
66 * @ipv6_off_list: List of IPv6 addresses to offload
67 * @neigh_off_list: List of neighbour offloads
68 * @ipv4_off_lock: Lock for the IPv4 address list
69 * @ipv6_off_lock: Lock for the IPv6 address list
70 * @neigh_off_lock: Lock for the neighbour address list
71 * @mac_off_ids: IDA to manage id assignment for offloaded MACs
72 * @neigh_nb: Notifier to monitor neighbour state
74 struct nfp_fl_tunnel_offloads {
75 struct rhashtable offloaded_macs;
76 struct list_head ipv4_off_list;
77 struct list_head ipv6_off_list;
78 struct list_head neigh_off_list;
79 struct mutex ipv4_off_lock;
80 struct mutex ipv6_off_lock;
81 spinlock_t neigh_off_lock;
82 struct ida mac_off_ids;
83 struct notifier_block neigh_nb;
87 * struct nfp_mtu_conf - manage MTU setting
88 * @portnum: NFP port number of repr with requested MTU change
89 * @requested_val: MTU value requested for repr
90 * @ack: Received ack that MTU has been correctly set
91 * @wait_q: Wait queue for MTU acknowledgements
92 * @lock: Lock for setting/reading MTU variables
96 unsigned int requested_val;
98 wait_queue_head_t wait_q;
103 * struct nfp_fl_lag - Flower APP priv data for link aggregation
104 * @work: Work queue for writing configs to the HW
105 * @lock: Lock to protect lag_group_list
106 * @group_list: List of all master/slave groups offloaded
107 * @ida_handle: IDA to handle group ids
108 * @pkt_num: Incremented for each config packet sent
109 * @batch_ver: Incremented for each batch of config packets
110 * @global_inst: Instance allocator for groups
111 * @rst_cfg: Marker to reset HW LAG config
112 * @retrans_skbs: Cmsgs that could not be processed by HW and require
116 struct delayed_work work;
118 struct list_head group_list;
119 struct ida ida_handle;
120 unsigned int pkt_num;
121 unsigned int batch_ver;
124 struct sk_buff_head retrans_skbs;
128 * struct nfp_fl_internal_ports - Flower APP priv data for additional ports
129 * @port_ids: Assignment of ids to any additional ports
130 * @lock: Lock for extra ports list
132 struct nfp_fl_internal_ports {
138 * struct nfp_flower_priv - Flower APP per-vNIC priv data
139 * @app: Back pointer to app
140 * @nn: Pointer to vNIC
141 * @mask_id_seed: Seed used for mask hash table
142 * @flower_version: HW version of flower
143 * @flower_ext_feats: Bitmap of extra features the HW supports
144 * @stats_ids: List of free stats ids
145 * @mask_ids: List of free mask ids
146 * @mask_table: Hash table used to store masks
147 * @stats_ring_size: Maximum number of allowed stats ids
148 * @flow_table: Hash table used to store flower rules
149 * @stats: Stored stats updates for flower rules
150 * @stats_lock: Lock for flower rule stats updates
151 * @stats_ctx_table: Hash table to map stats contexts to its flow rule
152 * @cmsg_work: Workqueue for control messages processing
153 * @cmsg_skbs_high: List of higher priority skbs for control message
155 * @cmsg_skbs_low: List of lower priority skbs for control message
157 * @tun: Tunnel offload data
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 * @indr_block_cb_priv: List of priv data passed to indirect block cbs
164 * @non_repr_priv: List of offloaded non-repr ports and their priv data
165 * @active_mem_unit: Current active memory unit for flower rules
166 * @total_mem_units: Total number of available memory units for flower rules
167 * @internal_ports: Internal port ids used in offloaded rules
168 * @qos_stats_work: Workqueue for qos stats processing
169 * @qos_rate_limiters: Current active qos rate limiters
170 * @qos_stats_lock: Lock on qos stats updates
171 * @pre_tun_rule_cnt: Number of pre-tunnel rules offloaded
173 struct nfp_flower_priv {
178 u64 flower_ext_feats;
179 struct nfp_fl_stats_id stats_ids;
180 struct nfp_fl_mask_id mask_ids;
181 DECLARE_HASHTABLE(mask_table, NFP_FLOWER_MASK_HASH_BITS);
183 struct rhashtable flow_table;
184 struct nfp_fl_stats *stats;
185 spinlock_t stats_lock; /* lock stats */
186 struct rhashtable stats_ctx_table;
187 struct work_struct cmsg_work;
188 struct sk_buff_head cmsg_skbs_high;
189 struct sk_buff_head cmsg_skbs_low;
190 struct nfp_fl_tunnel_offloads tun;
191 atomic_t reify_replies;
192 wait_queue_head_t reify_wait_queue;
193 struct nfp_mtu_conf mtu_conf;
194 struct nfp_fl_lag nfp_lag;
195 struct list_head indr_block_cb_priv;
196 struct list_head non_repr_priv;
197 unsigned int active_mem_unit;
198 unsigned int total_mem_units;
199 struct nfp_fl_internal_ports internal_ports;
200 struct delayed_work qos_stats_work;
201 unsigned int qos_rate_limiters;
202 spinlock_t qos_stats_lock; /* Protect the qos stats */
203 int pre_tun_rule_cnt;
207 * struct nfp_fl_qos - Flower APP priv data for quality of service
208 * @netdev_port_id: NFP port number of repr with qos info
209 * @curr_stats: Currently stored stats updates for qos info
210 * @prev_stats: Previously stored updates for qos info
211 * @last_update: Stored time when last stats were updated
215 struct nfp_stat_pair curr_stats;
216 struct nfp_stat_pair prev_stats;
221 * struct nfp_flower_repr_priv - Flower APP per-repr priv data
222 * @nfp_repr: Back pointer to nfp_repr
223 * @lag_port_flags: Extended port flags to record lag state of repr
224 * @mac_offloaded: Flag indicating a MAC address is offloaded for repr
225 * @offloaded_mac_addr: MAC address that has been offloaded for repr
226 * @block_shared: Flag indicating if offload applies to shared blocks
227 * @mac_list: List entry of reprs that share the same offloaded MAC
228 * @qos_table: Stored info on filters implementing qos
229 * @on_bridge: Indicates if the repr is attached to a bridge
231 struct nfp_flower_repr_priv {
232 struct nfp_repr *nfp_repr;
233 unsigned long lag_port_flags;
235 u8 offloaded_mac_addr[ETH_ALEN];
237 struct list_head mac_list;
238 struct nfp_fl_qos qos_table;
243 * struct nfp_flower_non_repr_priv - Priv data for non-repr offloaded ports
244 * @list: List entry of offloaded reprs
245 * @netdev: Pointer to non-repr net_device
246 * @ref_count: Number of references held for this priv data
247 * @mac_offloaded: Flag indicating a MAC address is offloaded for device
248 * @offloaded_mac_addr: MAC address that has been offloaded for dev
250 struct nfp_flower_non_repr_priv {
251 struct list_head list;
252 struct net_device *netdev;
255 u8 offloaded_mac_addr[ETH_ALEN];
258 struct nfp_fl_key_ls {
264 struct nfp_fl_rule_metadata {
270 __be64 host_cookie __packed;
271 __be64 flow_version __packed;
275 struct nfp_fl_stats {
282 * struct nfp_ipv6_addr_entry - cached IPv6 addresses
283 * @ipv6_addr: IP address
284 * @ref_count: number of rules currently using this IP
285 * @list: list pointer
287 struct nfp_ipv6_addr_entry {
288 struct in6_addr ipv6_addr;
290 struct list_head list;
293 struct nfp_fl_payload {
294 struct nfp_fl_rule_metadata meta;
295 unsigned long tc_flower_cookie;
296 struct rhash_head fl_node;
298 __be32 nfp_tun_ipv4_addr;
299 struct nfp_ipv6_addr_entry *nfp_tun_ipv6;
300 struct net_device *ingress_dev;
304 struct list_head linked_flows;
307 struct net_device *dev;
313 struct nfp_fl_payload_link {
314 /* A link contains a pointer to a merge flow and an associated sub_flow.
315 * Each merge flow will feature in 2 links to its underlying sub_flows.
316 * A sub_flow will have at least 1 link to a merge flow or more if it
317 * has been used to create multiple merge flows.
319 * For a merge flow, 'linked_flows' in its nfp_fl_payload struct lists
320 * all links to sub_flows (sub_flow.flow) via merge.list.
321 * For a sub_flow, 'linked_flows' gives all links to merge flows it has
322 * formed (merge_flow.flow) via sub_flow.list.
325 struct list_head list;
326 struct nfp_fl_payload *flow;
327 } merge_flow, sub_flow;
330 extern const struct rhashtable_params nfp_flower_table_params;
332 struct nfp_fl_stats_frame {
340 nfp_flower_internal_port_can_offload(struct nfp_app *app,
341 struct net_device *netdev)
343 struct nfp_flower_priv *app_priv = app->priv;
345 if (!(app_priv->flower_ext_feats & NFP_FL_FEATS_FLOW_MERGE))
347 if (!netdev->rtnl_link_ops)
349 if (!strcmp(netdev->rtnl_link_ops->kind, "openvswitch"))
355 /* The address of the merged flow acts as its cookie.
356 * Cookies supplied to us by TC flower are also addresses to allocated
357 * memory and thus this scheme should not generate any collisions.
359 static inline bool nfp_flower_is_merge_flow(struct nfp_fl_payload *flow_pay)
361 return flow_pay->tc_flower_cookie == (unsigned long)flow_pay;
364 static inline bool nfp_flower_is_supported_bridge(struct net_device *netdev)
366 return netif_is_ovs_master(netdev);
369 int nfp_flower_metadata_init(struct nfp_app *app, u64 host_ctx_count,
370 unsigned int host_ctx_split);
371 void nfp_flower_metadata_cleanup(struct nfp_app *app);
373 int nfp_flower_setup_tc(struct nfp_app *app, struct net_device *netdev,
374 enum tc_setup_type type, void *type_data);
375 int nfp_flower_merge_offloaded_flows(struct nfp_app *app,
376 struct nfp_fl_payload *sub_flow1,
377 struct nfp_fl_payload *sub_flow2);
378 int nfp_flower_compile_flow_match(struct nfp_app *app,
379 struct flow_cls_offload *flow,
380 struct nfp_fl_key_ls *key_ls,
381 struct net_device *netdev,
382 struct nfp_fl_payload *nfp_flow,
383 enum nfp_flower_tun_type tun_type,
384 struct netlink_ext_ack *extack);
385 int nfp_flower_compile_action(struct nfp_app *app,
386 struct flow_cls_offload *flow,
387 struct net_device *netdev,
388 struct nfp_fl_payload *nfp_flow,
389 struct netlink_ext_ack *extack);
390 int nfp_compile_flow_metadata(struct nfp_app *app,
391 struct flow_cls_offload *flow,
392 struct nfp_fl_payload *nfp_flow,
393 struct net_device *netdev,
394 struct netlink_ext_ack *extack);
395 void __nfp_modify_flow_metadata(struct nfp_flower_priv *priv,
396 struct nfp_fl_payload *nfp_flow);
397 int nfp_modify_flow_metadata(struct nfp_app *app,
398 struct nfp_fl_payload *nfp_flow);
400 struct nfp_fl_payload *
401 nfp_flower_search_fl_table(struct nfp_app *app, unsigned long tc_flower_cookie,
402 struct net_device *netdev);
403 struct nfp_fl_payload *
404 nfp_flower_get_fl_payload_from_ctx(struct nfp_app *app, u32 ctx_id);
405 struct nfp_fl_payload *
406 nfp_flower_remove_fl_table(struct nfp_app *app, unsigned long tc_flower_cookie);
408 void nfp_flower_rx_flow_stats(struct nfp_app *app, struct sk_buff *skb);
410 int nfp_tunnel_config_start(struct nfp_app *app);
411 void nfp_tunnel_config_stop(struct nfp_app *app);
412 int nfp_tunnel_mac_event_handler(struct nfp_app *app,
413 struct net_device *netdev,
414 unsigned long event, void *ptr);
415 void nfp_tunnel_del_ipv4_off(struct nfp_app *app, __be32 ipv4);
416 void nfp_tunnel_add_ipv4_off(struct nfp_app *app, __be32 ipv4);
418 nfp_tunnel_put_ipv6_off(struct nfp_app *app, struct nfp_ipv6_addr_entry *entry);
419 struct nfp_ipv6_addr_entry *
420 nfp_tunnel_add_ipv6_off(struct nfp_app *app, struct in6_addr *ipv6);
421 void nfp_tunnel_request_route_v4(struct nfp_app *app, struct sk_buff *skb);
422 void nfp_tunnel_request_route_v6(struct nfp_app *app, struct sk_buff *skb);
423 void nfp_tunnel_keep_alive(struct nfp_app *app, struct sk_buff *skb);
424 void nfp_flower_lag_init(struct nfp_fl_lag *lag);
425 void nfp_flower_lag_cleanup(struct nfp_fl_lag *lag);
426 int nfp_flower_lag_reset(struct nfp_fl_lag *lag);
427 int nfp_flower_lag_netdev_event(struct nfp_flower_priv *priv,
428 struct net_device *netdev,
429 unsigned long event, void *ptr);
430 bool nfp_flower_lag_unprocessed_msg(struct nfp_app *app, struct sk_buff *skb);
431 int nfp_flower_lag_populate_pre_action(struct nfp_app *app,
432 struct net_device *master,
433 struct nfp_fl_pre_lag *pre_act,
434 struct netlink_ext_ack *extack);
435 int nfp_flower_lag_get_output_id(struct nfp_app *app,
436 struct net_device *master);
437 void nfp_flower_qos_init(struct nfp_app *app);
438 void nfp_flower_qos_cleanup(struct nfp_app *app);
439 int nfp_flower_setup_qos_offload(struct nfp_app *app, struct net_device *netdev,
440 struct tc_cls_matchall_offload *flow);
441 void nfp_flower_stats_rlim_reply(struct nfp_app *app, struct sk_buff *skb);
442 int nfp_flower_reg_indir_block_handler(struct nfp_app *app,
443 struct net_device *netdev,
444 unsigned long event);
447 __nfp_flower_non_repr_priv_get(struct nfp_flower_non_repr_priv *non_repr_priv);
448 struct nfp_flower_non_repr_priv *
449 nfp_flower_non_repr_priv_get(struct nfp_app *app, struct net_device *netdev);
451 __nfp_flower_non_repr_priv_put(struct nfp_flower_non_repr_priv *non_repr_priv);
453 nfp_flower_non_repr_priv_put(struct nfp_app *app, struct net_device *netdev);
454 u32 nfp_flower_get_port_id_from_netdev(struct nfp_app *app,
455 struct net_device *netdev);
456 int nfp_flower_xmit_pre_tun_flow(struct nfp_app *app,
457 struct nfp_fl_payload *flow);
458 int nfp_flower_xmit_pre_tun_del_flow(struct nfp_app *app,
459 struct nfp_fl_payload *flow);