drivers/net/ethernet/sfc/ef100_rep.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /****************************************************************************
   3  * Driver for Solarflare network controllers and boards
   4  * Copyright 2019 Solarflare Communications Inc.
   5  * Copyright 2020-2022 Xilinx Inc.
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License version 2 as published
   9  * by the Free Software Foundation, incorporated herein by reference.
  10  */
  11
  12 /* Handling for ef100 representor netdevs */
  13 #ifndef EF100_REP_H
  14 #define EF100_REP_H
  15
  16 #include "net_driver.h"
  17 #include "tc.h"
  18
  19 struct efx_rep_sw_stats {
  20         atomic64_t rx_packets, tx_packets;
  21         atomic64_t rx_bytes, tx_bytes;
  22         atomic64_t rx_dropped, tx_errors;
  23 };
  24
  25 struct devlink_port;
  26
  27 /**
  28  * struct efx_rep - Private data for an Efx representor
  29  *
  30  * @parent: the efx PF which manages this representor
  31  * @net_dev: representor netdevice
  32  * @msg_enable: log message enable flags
  33  * @mport: m-port ID of corresponding VF
  34  * @idx: VF index
  35  * @write_index: number of packets enqueued to @rx_list
  36  * @read_index: number of packets consumed from @rx_list
  37  * @rx_pring_size: max length of RX list
  38  * @dflt: default-rule for MAE switching
  39  * @list: entry on efx->vf_reps
  40  * @rx_list: list of SKBs queued for receive in NAPI poll
  41  * @rx_lock: protects @rx_list
  42  * @napi: NAPI control structure
  43  * @stats: software traffic counters for netdev stats
  44  * @dl_port: devlink port associated to this netdev representor
  45  */
  46 struct efx_rep {
  47         struct efx_nic *parent;
  48         struct net_device *net_dev;
  49         u32 msg_enable;
  50         u32 mport;
  51         unsigned int idx;
  52         unsigned int write_index, read_index;
  53         unsigned int rx_pring_size;
  54         struct efx_tc_flow_rule dflt;
  55         struct list_head list;
  56         struct list_head rx_list;
  57         spinlock_t rx_lock;
  58         struct napi_struct napi;
  59         struct efx_rep_sw_stats stats;
  60         struct devlink_port *dl_port;
  61 };
  62
  63 int efx_ef100_vfrep_create(struct efx_nic *efx, unsigned int i);
  64 void efx_ef100_vfrep_destroy(struct efx_nic *efx, struct efx_rep *efv);
  65 void efx_ef100_fini_vfreps(struct efx_nic *efx);
  66
  67 void efx_ef100_rep_rx_packet(struct efx_rep *efv, struct efx_rx_buffer *rx_buf);
  68 /* Returns the representor corresponding to a VF m-port, or NULL
  69  * @mport is an m-port label, *not* an m-port ID!
  70  * Caller must hold rcu_read_lock().
  71  */
  72 struct efx_rep *efx_ef100_find_rep_by_mport(struct efx_nic *efx, u16 mport);
  73 extern const struct net_device_ops efx_ef100_rep_netdev_ops;
  74 void efx_ef100_init_reps(struct efx_nic *efx);
  75 void efx_ef100_fini_reps(struct efx_nic *efx);
  76 struct mae_mport_desc;
  77 bool ef100_mport_on_local_intf(struct efx_nic *efx,
  78                                struct mae_mport_desc *mport_desc);
  79 bool ef100_mport_is_vf(struct mae_mport_desc *mport_desc);
  80 #endif /* EF100_REP_H */