/* SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright(c) 2019-2021 Xilinx, Inc.
 * Copyright(c) 2019 Solarflare Communications Inc.
 *
 * This software was jointly developed between OKTET Labs (under contract
 * for Solarflare) and Solarflare Communications, Inc.
 */

#ifndef _SFC_REPR_PROXY_H
#define _SFC_REPR_PROXY_H

#include <stdint.h>

#include <rte_ring.h>
#include <rte_mempool.h>

#include "efx.h"

#include "sfc_repr.h"
#include "sfc_dp.h"
#include "sfc_flow.h"
#include "sfc_mae.h"

#ifdef __cplusplus
extern "C" {
#endif

/* Number of supported RxQs with different mbuf memory pools */
#define SFC_REPR_PROXY_NB_RXQ_MIN	(1)
#define SFC_REPR_PROXY_NB_RXQ_MAX	(1)

/* One TxQ is required and sufficient for port representors support */
#define SFC_REPR_PROXY_NB_TXQ_MIN	(1)
#define SFC_REPR_PROXY_NB_TXQ_MAX	(1)

#define SFC_REPR_PROXY_RX_DESC_COUNT	256
#define SFC_REPR_PROXY_RXQ_REFILL_LEVEL	(SFC_REPR_PROXY_RX_DESC_COUNT / 4)
#define SFC_REPR_PROXY_RX_BURST		32

#define SFC_REPR_PROXY_TX_DESC_COUNT	256
#define SFC_REPR_PROXY_TXQ_FREE_THRESH	(SFC_REPR_PROXY_TX_DESC_COUNT / 4)
#define SFC_REPR_PROXY_TX_BURST		32

struct sfc_repr_proxy_rxq {
	struct rte_ring			*ring;
	struct rte_mempool		*mb_pool;
};

struct sfc_repr_proxy_txq {
	struct rte_ring			*ring;
};

struct sfc_repr_proxy_filter {
	/*
	 * 2 filters are required to match all incoming traffic, unknown
	 * unicast and unknown multicast.
	 */
	efx_filter_spec_t specs[2];
};

struct sfc_repr_proxy_port {
	TAILQ_ENTRY(sfc_repr_proxy_port)	entries;
	uint16_t				repr_id;
	uint16_t				rte_port_id;
	efx_mport_id_t				egress_mport;
	struct sfc_repr_proxy_rxq		rxq[SFC_REPR_RXQ_MAX];
	struct sfc_repr_proxy_txq		txq[SFC_REPR_TXQ_MAX];
	struct sfc_mae_rule			*mae_rule;
	bool					enabled;
	bool					started;
};

struct sfc_repr_proxy_dp_rxq {
	struct rte_mempool		*mp;
	unsigned int			ref_count;

	eth_rx_burst_t			pkt_burst;
	struct sfc_dp_rxq		*dp;

	uint16_t			route_port_id;
	bool				stop_route;
	unsigned int			available;
	unsigned int			forwarded;
	unsigned int			routed;
	struct rte_mbuf			*pkts[SFC_REPR_PROXY_TX_BURST];

	sfc_sw_index_t			sw_index;
};

struct sfc_repr_proxy_dp_txq {
	eth_tx_burst_t			pkt_burst;
	struct sfc_dp_txq		*dp;

	unsigned int			available;
	unsigned int			transmitted;
	struct rte_mbuf			*tx_pkts[SFC_REPR_PROXY_TX_BURST];

	sfc_sw_index_t			sw_index;
};

enum sfc_repr_proxy_mbox_op {
	SFC_REPR_PROXY_MBOX_ADD_PORT,
	SFC_REPR_PROXY_MBOX_DEL_PORT,
	SFC_REPR_PROXY_MBOX_START_PORT,
	SFC_REPR_PROXY_MBOX_STOP_PORT,
};

struct sfc_repr_proxy_mbox {
	struct sfc_repr_proxy_port	*port;
	enum sfc_repr_proxy_mbox_op	op;

	bool				write_marker;
	bool				ack;
};

TAILQ_HEAD(sfc_repr_proxy_ports, sfc_repr_proxy_port);

struct sfc_repr_proxy {
	uint32_t			service_core_id;
	uint32_t			service_id;
	efx_mport_id_t			mport_alias;
	struct sfc_repr_proxy_ports	ports;
	bool				started;
	struct sfc_repr_proxy_dp_rxq	dp_rxq[SFC_REPR_PROXY_NB_RXQ_MAX];
	struct sfc_repr_proxy_dp_txq	dp_txq[SFC_REPR_PROXY_NB_TXQ_MAX];
	struct sfc_repr_proxy_filter	mport_filter;

	struct sfc_repr_proxy_mbox	mbox;
	unsigned int			nb_txq;
	unsigned int			nb_rxq;
};

struct sfc_adapter;

int sfc_repr_proxy_attach(struct sfc_adapter *sa);
void sfc_repr_proxy_pre_detach(struct sfc_adapter *sa);
void sfc_repr_proxy_detach(struct sfc_adapter *sa);
int sfc_repr_proxy_txq_init(struct sfc_adapter *sa);
void sfc_repr_proxy_txq_fini(struct sfc_adapter *sa);
int sfc_repr_proxy_start(struct sfc_adapter *sa);
void sfc_repr_proxy_stop(struct sfc_adapter *sa);

#ifdef __cplusplus
}
#endif
#endif  /* _SFC_REPR_PROXY_H */