| 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
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| 2 | /**************************************************************************** |
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| 3 | * Driver for Solarflare network controllers and boards |
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| 4 | * Copyright 2019 Solarflare Communications Inc. |
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| 5 | * Copyright 2020-2022 Xilinx Inc. |
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| 6 | * |
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| 7 | * This program is free software; you can redistribute it and/or modify it |
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| 8 | * under the terms of the GNU General Public License version 2 as published |
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| 9 | * by the Free Software Foundation, incorporated herein by reference. |
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| 10 | */ |
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| 11 | |
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| 12 | /* Handling for ef100 representor netdevs */ |
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| 13 | #ifndef EF100_REP_H |
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| 14 | #define EF100_REP_H |
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| 15 | |
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| 16 | #include "net_driver.h" |
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| 17 | #include "tc.h" |
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| 18 | |
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| 19 | struct efx_rep_sw_stats { |
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| 20 | atomic64_t rx_packets, tx_packets; |
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| 21 | atomic64_t rx_bytes, tx_bytes; |
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| 22 | atomic64_t rx_dropped, tx_errors; |
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| 23 | }; |
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| 24 | |
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| 25 | struct devlink_port; |
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| 26 | |
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| 27 | /** |
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| 28 | * struct efx_rep - Private data for an Efx representor |
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| 29 | * |
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| 30 | * @parent: the efx PF which manages this representor |
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| 31 | * @net_dev: representor netdevice |
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| 32 | * @msg_enable: log message enable flags |
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| 33 | * @mport: m-port ID of corresponding VF |
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| 34 | * @idx: VF index |
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| 35 | * @write_index: number of packets enqueued to @rx_list |
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| 36 | * @read_index: number of packets consumed from @rx_list |
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| 37 | * @rx_pring_size: max length of RX list |
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| 38 | * @dflt: default-rule for MAE switching |
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| 39 | * @list: entry on efx->vf_reps |
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| 40 | * @rx_list: list of SKBs queued for receive in NAPI poll |
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| 41 | * @rx_lock: protects @rx_list |
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| 42 | * @napi: NAPI control structure |
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| 43 | * @stats: software traffic counters for netdev stats |
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| 44 | * @dl_port: devlink port associated to this netdev representor |
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| 45 | */ |
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| 46 | struct efx_rep { |
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| 47 | struct efx_nic *parent; |
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| 48 | struct net_device *net_dev; |
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| 49 | u32 msg_enable; |
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| 50 | u32 mport; |
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| 51 | unsigned int idx; |
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| 52 | unsigned int write_index, read_index; |
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| 53 | unsigned int rx_pring_size; |
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| 54 | struct efx_tc_flow_rule dflt; |
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| 55 | struct list_head list; |
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| 56 | struct list_head rx_list; |
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| 57 | spinlock_t rx_lock; |
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| 58 | struct napi_struct napi; |
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| 59 | struct efx_rep_sw_stats stats; |
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| 60 | struct devlink_port *dl_port; |
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| 61 | }; |
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| 62 | |
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| 63 | int efx_ef100_vfrep_create(struct efx_nic *efx, unsigned int i); |
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| 64 | void efx_ef100_vfrep_destroy(struct efx_nic *efx, struct efx_rep *efv); |
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| 65 | void efx_ef100_fini_vfreps(struct efx_nic *efx); |
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| 66 | |
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| 67 | void efx_ef100_rep_rx_packet(struct efx_rep *efv, struct efx_rx_buffer *rx_buf); |
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| 68 | /* Returns the representor corresponding to a VF m-port, or NULL |
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| 69 | * @mport is an m-port label, *not* an m-port ID! |
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| 70 | * Caller must hold rcu_read_lock(). |
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| 71 | */ |
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| 72 | struct efx_rep *efx_ef100_find_rep_by_mport(struct efx_nic *efx, u16 mport); |
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| 73 | extern const struct net_device_ops efx_ef100_rep_netdev_ops; |
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| 74 | void efx_ef100_init_reps(struct efx_nic *efx); |
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| 75 | void efx_ef100_fini_reps(struct efx_nic *efx); |
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| 76 | struct mae_mport_desc; |
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| 77 | bool ef100_mport_on_local_intf(struct efx_nic *efx, |
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| 78 | struct mae_mport_desc *mport_desc); |
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| 79 | bool ef100_mport_is_vf(struct mae_mport_desc *mport_desc); |
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| 80 | #endif /* EF100_REP_H */ |
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| 81 | |
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