298 lines
9.6 KiB
C
298 lines
9.6 KiB
C
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/*
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* Copyright (C) 2017 Netronome Systems, Inc.
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*
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* This software is dual licensed under the GNU General License Version 2,
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* June 1991 as shown in the file COPYING in the top-level directory of this
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* source tree or the BSD 2-Clause License provided below. You have the
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* option to license this software under the complete terms of either license.
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*
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* The BSD 2-Clause License:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* 1. Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef __NFP_FLOWER_H__
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#define __NFP_FLOWER_H__ 1
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#include "cmsg.h"
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#include <linux/circ_buf.h>
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#include <linux/hashtable.h>
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#include <linux/time64.h>
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#include <linux/types.h>
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#include <net/pkt_cls.h>
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#include <net/tcp.h>
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#include <linux/workqueue.h>
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#include <linux/idr.h>
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struct nfp_fl_pre_lag;
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struct net_device;
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struct nfp_app;
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#define NFP_FL_STATS_CTX_DONT_CARE cpu_to_be32(0xffffffff)
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#define NFP_FL_STATS_ENTRY_RS BIT(20)
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#define NFP_FL_STATS_ELEM_RS 4
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#define NFP_FL_REPEATED_HASH_MAX BIT(17)
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#define NFP_FLOWER_HASH_BITS 19
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#define NFP_FLOWER_MASK_ENTRY_RS 256
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#define NFP_FLOWER_MASK_ELEMENT_RS 1
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#define NFP_FLOWER_MASK_HASH_BITS 10
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#define NFP_FL_META_FLAG_MANAGE_MASK BIT(7)
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#define NFP_FL_MASK_REUSE_TIME_NS 40000
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#define NFP_FL_MASK_ID_LOCATION 1
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#define NFP_FL_VXLAN_PORT 4789
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#define NFP_FL_GENEVE_PORT 6081
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/* Extra features bitmap. */
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#define NFP_FL_FEATS_GENEVE BIT(0)
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#define NFP_FL_NBI_MTU_SETTING BIT(1)
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#define NFP_FL_FEATS_GENEVE_OPT BIT(2)
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#define NFP_FL_FEATS_VLAN_PCP BIT(3)
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#define NFP_FL_FEATS_LAG BIT(31)
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struct nfp_fl_mask_id {
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struct circ_buf mask_id_free_list;
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ktime_t *last_used;
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u8 init_unallocated;
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};
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struct nfp_fl_stats_id {
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struct circ_buf free_list;
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u32 init_unalloc;
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u8 repeated_em_count;
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};
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/**
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* struct nfp_mtu_conf - manage MTU setting
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* @portnum: NFP port number of repr with requested MTU change
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* @requested_val: MTU value requested for repr
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* @ack: Received ack that MTU has been correctly set
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* @wait_q: Wait queue for MTU acknowledgements
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* @lock: Lock for setting/reading MTU variables
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*/
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struct nfp_mtu_conf {
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u32 portnum;
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unsigned int requested_val;
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bool ack;
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wait_queue_head_t wait_q;
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spinlock_t lock;
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};
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/**
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* struct nfp_fl_lag - Flower APP priv data for link aggregation
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* @lag_nb: Notifier to track master/slave events
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* @work: Work queue for writing configs to the HW
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* @lock: Lock to protect lag_group_list
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* @group_list: List of all master/slave groups offloaded
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* @ida_handle: IDA to handle group ids
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* @pkt_num: Incremented for each config packet sent
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* @batch_ver: Incremented for each batch of config packets
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* @global_inst: Instance allocator for groups
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* @rst_cfg: Marker to reset HW LAG config
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* @retrans_skbs: Cmsgs that could not be processed by HW and require
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* retransmission
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*/
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struct nfp_fl_lag {
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struct notifier_block lag_nb;
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struct delayed_work work;
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struct mutex lock;
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struct list_head group_list;
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struct ida ida_handle;
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unsigned int pkt_num;
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unsigned int batch_ver;
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u8 global_inst;
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bool rst_cfg;
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struct sk_buff_head retrans_skbs;
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};
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/**
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* struct nfp_flower_priv - Flower APP per-vNIC priv data
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* @app: Back pointer to app
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* @nn: Pointer to vNIC
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* @mask_id_seed: Seed used for mask hash table
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* @flower_version: HW version of flower
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* @flower_ext_feats: Bitmap of extra features the HW supports
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* @stats_ids: List of free stats ids
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* @mask_ids: List of free mask ids
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* @mask_table: Hash table used to store masks
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* @flow_table: Hash table used to store flower rules
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* @cmsg_work: Workqueue for control messages processing
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* @cmsg_skbs_high: List of higher priority skbs for control message
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* processing
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* @cmsg_skbs_low: List of lower priority skbs for control message
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* processing
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* @nfp_mac_off_list: List of MAC addresses to offload
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* @nfp_mac_index_list: List of unique 8-bit indexes for non NFP netdevs
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* @nfp_ipv4_off_list: List of IPv4 addresses to offload
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* @nfp_neigh_off_list: List of neighbour offloads
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* @nfp_mac_off_lock: Lock for the MAC address list
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* @nfp_mac_index_lock: Lock for the MAC index list
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* @nfp_ipv4_off_lock: Lock for the IPv4 address list
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* @nfp_neigh_off_lock: Lock for the neighbour address list
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* @nfp_mac_off_ids: IDA to manage id assignment for offloaded macs
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* @nfp_mac_off_count: Number of MACs in address list
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* @nfp_tun_mac_nb: Notifier to monitor link state
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* @nfp_tun_neigh_nb: Notifier to monitor neighbour state
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* @reify_replies: atomically stores the number of replies received
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* from firmware for repr reify
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* @reify_wait_queue: wait queue for repr reify response counting
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* @mtu_conf: Configuration of repr MTU value
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* @nfp_lag: Link aggregation data block
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*/
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struct nfp_flower_priv {
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struct nfp_app *app;
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struct nfp_net *nn;
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u32 mask_id_seed;
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u64 flower_version;
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u64 flower_ext_feats;
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struct nfp_fl_stats_id stats_ids;
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struct nfp_fl_mask_id mask_ids;
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DECLARE_HASHTABLE(mask_table, NFP_FLOWER_MASK_HASH_BITS);
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DECLARE_HASHTABLE(flow_table, NFP_FLOWER_HASH_BITS);
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struct work_struct cmsg_work;
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struct sk_buff_head cmsg_skbs_high;
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struct sk_buff_head cmsg_skbs_low;
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struct list_head nfp_mac_off_list;
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struct list_head nfp_mac_index_list;
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struct list_head nfp_ipv4_off_list;
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struct list_head nfp_neigh_off_list;
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struct mutex nfp_mac_off_lock;
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struct mutex nfp_mac_index_lock;
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struct mutex nfp_ipv4_off_lock;
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spinlock_t nfp_neigh_off_lock;
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struct ida nfp_mac_off_ids;
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int nfp_mac_off_count;
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struct notifier_block nfp_tun_mac_nb;
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struct notifier_block nfp_tun_neigh_nb;
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atomic_t reify_replies;
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wait_queue_head_t reify_wait_queue;
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struct nfp_mtu_conf mtu_conf;
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struct nfp_fl_lag nfp_lag;
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};
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/**
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* struct nfp_flower_repr_priv - Flower APP per-repr priv data
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* @lag_port_flags: Extended port flags to record lag state of repr
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*/
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struct nfp_flower_repr_priv {
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unsigned long lag_port_flags;
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};
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struct nfp_fl_key_ls {
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u32 key_layer_two;
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u8 key_layer;
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int key_size;
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};
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struct nfp_fl_rule_metadata {
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u8 key_len;
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u8 mask_len;
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u8 act_len;
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u8 flags;
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__be32 host_ctx_id;
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__be64 host_cookie __packed;
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__be64 flow_version __packed;
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__be32 shortcut;
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};
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struct nfp_fl_stats {
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u64 pkts;
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u64 bytes;
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u64 used;
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};
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struct nfp_fl_payload {
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struct nfp_fl_rule_metadata meta;
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unsigned long tc_flower_cookie;
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struct hlist_node link;
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struct rcu_head rcu;
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spinlock_t lock; /* lock stats */
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struct nfp_fl_stats stats;
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__be32 nfp_tun_ipv4_addr;
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struct net_device *ingress_dev;
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char *unmasked_data;
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char *mask_data;
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char *action_data;
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bool ingress_offload;
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};
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struct nfp_fl_stats_frame {
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__be32 stats_con_id;
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__be32 pkt_count;
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__be64 byte_count;
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__be64 stats_cookie;
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};
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int nfp_flower_metadata_init(struct nfp_app *app);
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void nfp_flower_metadata_cleanup(struct nfp_app *app);
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int nfp_flower_setup_tc(struct nfp_app *app, struct net_device *netdev,
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enum tc_setup_type type, void *type_data);
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int nfp_flower_compile_flow_match(struct tc_cls_flower_offload *flow,
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struct nfp_fl_key_ls *key_ls,
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struct net_device *netdev,
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struct nfp_fl_payload *nfp_flow,
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enum nfp_flower_tun_type tun_type);
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int nfp_flower_compile_action(struct nfp_app *app,
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struct tc_cls_flower_offload *flow,
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struct net_device *netdev,
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struct nfp_fl_payload *nfp_flow);
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int nfp_compile_flow_metadata(struct nfp_app *app,
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struct tc_cls_flower_offload *flow,
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struct nfp_fl_payload *nfp_flow,
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struct net_device *netdev);
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int nfp_modify_flow_metadata(struct nfp_app *app,
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struct nfp_fl_payload *nfp_flow);
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struct nfp_fl_payload *
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nfp_flower_search_fl_table(struct nfp_app *app, unsigned long tc_flower_cookie,
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struct net_device *netdev, __be32 host_ctx);
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struct nfp_fl_payload *
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nfp_flower_remove_fl_table(struct nfp_app *app, unsigned long tc_flower_cookie);
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void nfp_flower_rx_flow_stats(struct nfp_app *app, struct sk_buff *skb);
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int nfp_tunnel_config_start(struct nfp_app *app);
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void nfp_tunnel_config_stop(struct nfp_app *app);
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void nfp_tunnel_write_macs(struct nfp_app *app);
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void nfp_tunnel_del_ipv4_off(struct nfp_app *app, __be32 ipv4);
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void nfp_tunnel_add_ipv4_off(struct nfp_app *app, __be32 ipv4);
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void nfp_tunnel_request_route(struct nfp_app *app, struct sk_buff *skb);
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void nfp_tunnel_keep_alive(struct nfp_app *app, struct sk_buff *skb);
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int nfp_flower_setup_tc_egress_cb(enum tc_setup_type type, void *type_data,
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void *cb_priv);
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void nfp_flower_lag_init(struct nfp_fl_lag *lag);
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void nfp_flower_lag_cleanup(struct nfp_fl_lag *lag);
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int nfp_flower_lag_reset(struct nfp_fl_lag *lag);
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bool nfp_flower_lag_unprocessed_msg(struct nfp_app *app, struct sk_buff *skb);
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int nfp_flower_lag_populate_pre_action(struct nfp_app *app,
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struct net_device *master,
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struct nfp_fl_pre_lag *pre_act);
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int nfp_flower_lag_get_output_id(struct nfp_app *app,
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struct net_device *master);
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#endif
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