67ab160ed0
Default rules are low-priority switching rules which the hardware uses in the absence of higher-priority rules. Each representor requires a corresponding rule matching traffic from its representee VF and delivering to the PF (where a check on INGRESS_MPORT in __ef100_rx_packet() will direct it to the representor). No rule is required in the reverse direction, because representor TX uses a TX override descriptor to bypass the MAE and deliver directly to the VF. Since inserting any rule into the MAE disables the firmware's own default rules, also insert a pair of rules to connect the PF to the physical network port and vice-versa. Signed-off-by: Edward Cree <ecree.xilinx@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
69 lines
2.2 KiB
C
69 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/****************************************************************************
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* Driver for Solarflare network controllers and boards
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* Copyright 2019 Solarflare Communications Inc.
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* Copyright 2020-2022 Xilinx Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation, incorporated herein by reference.
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*/
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/* Handling for ef100 representor netdevs */
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#ifndef EF100_REP_H
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#define EF100_REP_H
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#include "net_driver.h"
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#include "tc.h"
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struct efx_rep_sw_stats {
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atomic64_t rx_packets, tx_packets;
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atomic64_t rx_bytes, tx_bytes;
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atomic64_t rx_dropped, tx_errors;
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};
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/**
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* struct efx_rep - Private data for an Efx representor
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*
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* @parent: the efx PF which manages this representor
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* @net_dev: representor netdevice
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* @msg_enable: log message enable flags
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* @mport: m-port ID of corresponding VF
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* @idx: VF index
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* @write_index: number of packets enqueued to @rx_list
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* @read_index: number of packets consumed from @rx_list
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* @rx_pring_size: max length of RX list
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* @dflt: default-rule for MAE switching
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* @list: entry on efx->vf_reps
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* @rx_list: list of SKBs queued for receive in NAPI poll
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* @rx_lock: protects @rx_list
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* @napi: NAPI control structure
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* @stats: software traffic counters for netdev stats
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*/
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struct efx_rep {
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struct efx_nic *parent;
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struct net_device *net_dev;
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u32 msg_enable;
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u32 mport;
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unsigned int idx;
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unsigned int write_index, read_index;
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unsigned int rx_pring_size;
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struct efx_tc_flow_rule dflt;
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struct list_head list;
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struct list_head rx_list;
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spinlock_t rx_lock;
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struct napi_struct napi;
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struct efx_rep_sw_stats stats;
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};
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int efx_ef100_vfrep_create(struct efx_nic *efx, unsigned int i);
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void efx_ef100_vfrep_destroy(struct efx_nic *efx, struct efx_rep *efv);
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void efx_ef100_fini_vfreps(struct efx_nic *efx);
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void efx_ef100_rep_rx_packet(struct efx_rep *efv, struct efx_rx_buffer *rx_buf);
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/* Returns the representor corresponding to a VF m-port, or NULL
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* @mport is an m-port label, *not* an m-port ID!
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* Caller must hold rcu_read_lock().
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*/
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struct efx_rep *efx_ef100_find_rep_by_mport(struct efx_nic *efx, u16 mport);
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#endif /* EF100_REP_H */
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