/* * Copyright (C) 2017 Netronome Systems, Inc. * * This software is dual licensed under the GNU General License Version 2, * June 1991 as shown in the file COPYING in the top-level directory of this * source tree or the BSD 2-Clause License provided below. You have the * option to license this software under the complete terms of either license. * * The BSD 2-Clause License: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * 1. Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * 2. Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #ifndef __NFP_FLOWER_H__ #define __NFP_FLOWER_H__ 1 #include "cmsg.h" #include #include #include #include #include #include #include struct net_device; struct nfp_app; #define NFP_FL_STATS_ENTRY_RS BIT(20) #define NFP_FL_STATS_ELEM_RS 4 #define NFP_FL_REPEATED_HASH_MAX BIT(17) #define NFP_FLOWER_HASH_BITS 19 #define NFP_FLOWER_MASK_ENTRY_RS 256 #define NFP_FLOWER_MASK_ELEMENT_RS 1 #define NFP_FLOWER_MASK_HASH_BITS 10 #define NFP_FL_META_FLAG_MANAGE_MASK BIT(7) #define NFP_FL_MASK_REUSE_TIME_NS 40000 #define NFP_FL_MASK_ID_LOCATION 1 #define NFP_FL_VXLAN_PORT 4789 #define NFP_FL_GENEVE_PORT 6081 /* Extra features bitmap. */ #define NFP_FL_FEATS_GENEVE BIT(0) #define NFP_FL_NBI_MTU_SETTING BIT(1) struct nfp_fl_mask_id { struct circ_buf mask_id_free_list; struct timespec64 *last_used; u8 init_unallocated; }; struct nfp_fl_stats_id { struct circ_buf free_list; u32 init_unalloc; u8 repeated_em_count; }; /** * struct nfp_mtu_conf - manage MTU setting * @portnum: NFP port number of repr with requested MTU change * @requested_val: MTU value requested for repr * @ack: Received ack that MTU has been correctly set * @wait_q: Wait queue for MTU acknowledgements * @lock: Lock for setting/reading MTU variables */ struct nfp_mtu_conf { u32 portnum; unsigned int requested_val; bool ack; wait_queue_head_t wait_q; spinlock_t lock; }; /** * struct nfp_flower_priv - Flower APP per-vNIC priv data * @app: Back pointer to app * @nn: Pointer to vNIC * @mask_id_seed: Seed used for mask hash table * @flower_version: HW version of flower * @flower_ext_feats: Bitmap of extra features the HW supports * @stats_ids: List of free stats ids * @mask_ids: List of free mask ids * @mask_table: Hash table used to store masks * @flow_table: Hash table used to store flower rules * @cmsg_work: Workqueue for control messages processing * @cmsg_skbs_high: List of higher priority skbs for control message * processing * @cmsg_skbs_low: List of lower priority skbs for control message * processing * @nfp_mac_off_list: List of MAC addresses to offload * @nfp_mac_index_list: List of unique 8-bit indexes for non NFP netdevs * @nfp_ipv4_off_list: List of IPv4 addresses to offload * @nfp_neigh_off_list: List of neighbour offloads * @nfp_mac_off_lock: Lock for the MAC address list * @nfp_mac_index_lock: Lock for the MAC index list * @nfp_ipv4_off_lock: Lock for the IPv4 address list * @nfp_neigh_off_lock: Lock for the neighbour address list * @nfp_mac_off_ids: IDA to manage id assignment for offloaded macs * @nfp_mac_off_count: Number of MACs in address list * @nfp_tun_mac_nb: Notifier to monitor link state * @nfp_tun_neigh_nb: Notifier to monitor neighbour state * @reify_replies: atomically stores the number of replies received * from firmware for repr reify * @reify_wait_queue: wait queue for repr reify response counting * @mtu_conf: Configuration of repr MTU value */ struct nfp_flower_priv { struct nfp_app *app; struct nfp_net *nn; u32 mask_id_seed; u64 flower_version; u64 flower_ext_feats; struct nfp_fl_stats_id stats_ids; struct nfp_fl_mask_id mask_ids; DECLARE_HASHTABLE(mask_table, NFP_FLOWER_MASK_HASH_BITS); DECLARE_HASHTABLE(flow_table, NFP_FLOWER_HASH_BITS); struct work_struct cmsg_work; struct sk_buff_head cmsg_skbs_high; struct sk_buff_head cmsg_skbs_low; struct list_head nfp_mac_off_list; struct list_head nfp_mac_index_list; struct list_head nfp_ipv4_off_list; struct list_head nfp_neigh_off_list; struct mutex nfp_mac_off_lock; struct mutex nfp_mac_index_lock; struct mutex nfp_ipv4_off_lock; spinlock_t nfp_neigh_off_lock; struct ida nfp_mac_off_ids; int nfp_mac_off_count; struct notifier_block nfp_tun_mac_nb; struct notifier_block nfp_tun_neigh_nb; atomic_t reify_replies; wait_queue_head_t reify_wait_queue; struct nfp_mtu_conf mtu_conf; }; struct nfp_fl_key_ls { u32 key_layer_two; u8 key_layer; int key_size; }; struct nfp_fl_rule_metadata { u8 key_len; u8 mask_len; u8 act_len; u8 flags; __be32 host_ctx_id; __be64 host_cookie __packed; __be64 flow_version __packed; __be32 shortcut; }; struct nfp_fl_stats { u64 pkts; u64 bytes; u64 used; }; struct nfp_fl_payload { struct nfp_fl_rule_metadata meta; unsigned long tc_flower_cookie; struct hlist_node link; struct rcu_head rcu; spinlock_t lock; /* lock stats */ struct nfp_fl_stats stats; __be32 nfp_tun_ipv4_addr; char *unmasked_data; char *mask_data; char *action_data; }; struct nfp_fl_stats_frame { __be32 stats_con_id; __be32 pkt_count; __be64 byte_count; __be64 stats_cookie; }; int nfp_flower_metadata_init(struct nfp_app *app); void nfp_flower_metadata_cleanup(struct nfp_app *app); int nfp_flower_setup_tc(struct nfp_app *app, struct net_device *netdev, enum tc_setup_type type, void *type_data); int nfp_flower_compile_flow_match(struct tc_cls_flower_offload *flow, struct nfp_fl_key_ls *key_ls, struct net_device *netdev, struct nfp_fl_payload *nfp_flow, enum nfp_flower_tun_type tun_type); int nfp_flower_compile_action(struct tc_cls_flower_offload *flow, struct net_device *netdev, struct nfp_fl_payload *nfp_flow); int nfp_compile_flow_metadata(struct nfp_app *app, struct tc_cls_flower_offload *flow, struct nfp_fl_payload *nfp_flow); int nfp_modify_flow_metadata(struct nfp_app *app, struct nfp_fl_payload *nfp_flow); struct nfp_fl_payload * nfp_flower_search_fl_table(struct nfp_app *app, unsigned long tc_flower_cookie); struct nfp_fl_payload * nfp_flower_remove_fl_table(struct nfp_app *app, unsigned long tc_flower_cookie); void nfp_flower_rx_flow_stats(struct nfp_app *app, struct sk_buff *skb); int nfp_tunnel_config_start(struct nfp_app *app); void nfp_tunnel_config_stop(struct nfp_app *app); void nfp_tunnel_write_macs(struct nfp_app *app); void nfp_tunnel_del_ipv4_off(struct nfp_app *app, __be32 ipv4); void nfp_tunnel_add_ipv4_off(struct nfp_app *app, __be32 ipv4); void nfp_tunnel_request_route(struct nfp_app *app, struct sk_buff *skb); void nfp_tunnel_keep_alive(struct nfp_app *app, struct sk_buff *skb); int nfp_flower_setup_tc_egress_cb(enum tc_setup_type type, void *type_data, void *cb_priv); #endif