| /* |
| * 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 <linux/circ_buf.h> |
| #include <linux/hashtable.h> |
| #include <linux/time64.h> |
| #include <linux/types.h> |
| #include <net/pkt_cls.h> |
| #include <linux/workqueue.h> |
| |
| 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 |
| |
| 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_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: List of 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 |
| */ |
| 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; |
| 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; |
| }; |
| |
| 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); |
| 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 |
