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/*-
* BSD LICENSE
*
* Copyright (c) 2016-2017 Solarflare Communications Inc.
* All rights reserved.
*
* This software was jointly developed between OKTET Labs (under contract
* for Solarflare) and Solarflare Communications, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _SFC_RX_H
#define _SFC_RX_H
#include <rte_mbuf.h>
#include <rte_mempool.h>
#include <rte_ethdev.h>
#include "efx.h"
#include "sfc_dp_rx.h"
#ifdef __cplusplus
extern "C" {
#endif
struct sfc_adapter;
struct sfc_evq;
/**
* Software Rx descriptor information associated with hardware Rx
* descriptor.
*/
struct sfc_efx_rx_sw_desc {
struct rte_mbuf *mbuf;
unsigned int flags;
unsigned int size;
};
/** Receive queue state bits */
enum sfc_rxq_state_bit {
SFC_RXQ_INITIALIZED_BIT = 0,
#define SFC_RXQ_INITIALIZED (1 << SFC_RXQ_INITIALIZED_BIT)
SFC_RXQ_STARTED_BIT,
#define SFC_RXQ_STARTED (1 << SFC_RXQ_STARTED_BIT)
SFC_RXQ_FLUSHING_BIT,
#define SFC_RXQ_FLUSHING (1 << SFC_RXQ_FLUSHING_BIT)
SFC_RXQ_FLUSHED_BIT,
#define SFC_RXQ_FLUSHED (1 << SFC_RXQ_FLUSHED_BIT)
SFC_RXQ_FLUSH_FAILED_BIT,
#define SFC_RXQ_FLUSH_FAILED (1 << SFC_RXQ_FLUSH_FAILED_BIT)
};
/**
* Receive queue control information.
* Allocated on the socket specified on the queue setup.
*/
struct sfc_rxq {
struct sfc_evq *evq;
efx_rxq_t *common;
efsys_mem_t mem;
unsigned int hw_index;
unsigned int refill_threshold;
struct rte_mempool *refill_mb_pool;
struct sfc_dp_rxq *dp;
unsigned int state;
};
static inline unsigned int
sfc_rxq_sw_index_by_hw_index(unsigned int hw_index)
{
return hw_index;
}
static inline unsigned int
sfc_rxq_sw_index(const struct sfc_rxq *rxq)
{
return sfc_rxq_sw_index_by_hw_index(rxq->hw_index);
}
struct sfc_rxq *sfc_rxq_by_dp_rxq(const struct sfc_dp_rxq *dp_rxq);
/**
* Receive queue information used on libefx-based data path.
* Allocated on the socket specified on the queue setup.
*/
struct sfc_efx_rxq {
/* Used on data path */
struct sfc_evq *evq;
unsigned int flags;
#define SFC_EFX_RXQ_FLAG_STARTED 0x1
#define SFC_EFX_RXQ_FLAG_RUNNING 0x2
#define SFC_EFX_RXQ_FLAG_RSS_HASH 0x4
unsigned int ptr_mask;
unsigned int pending;
unsigned int completed;
uint16_t batch_max;
uint16_t prefix_size;
struct sfc_efx_rx_sw_desc *sw_desc;
/* Used on refill */
unsigned int added;
unsigned int pushed;
unsigned int refill_threshold;
uint16_t buf_size;
struct rte_mempool *refill_mb_pool;
efx_rxq_t *common;
/* Datapath receive queue anchor */
struct sfc_dp_rxq dp;
};
static inline struct sfc_efx_rxq *
sfc_efx_rxq_by_dp_rxq(struct sfc_dp_rxq *dp_rxq)
{
return container_of(dp_rxq, struct sfc_efx_rxq, dp);
}
/**
* Receive queue information used during setup/release only.
* Allocated on the same socket as adapter data.
*/
struct sfc_rxq_info {
unsigned int max_entries;
unsigned int entries;
efx_rxq_type_t type;
struct sfc_rxq *rxq;
boolean_t deferred_start;
boolean_t deferred_started;
};
int sfc_rx_configure(struct sfc_adapter *sa);
void sfc_rx_close(struct sfc_adapter *sa);
int sfc_rx_start(struct sfc_adapter *sa);
void sfc_rx_stop(struct sfc_adapter *sa);
int sfc_rx_qinit(struct sfc_adapter *sa, unsigned int rx_queue_id,
uint16_t nb_rx_desc, unsigned int socket_id,
const struct rte_eth_rxconf *rx_conf,
struct rte_mempool *mb_pool);
void sfc_rx_qfini(struct sfc_adapter *sa, unsigned int sw_index);
int sfc_rx_qstart(struct sfc_adapter *sa, unsigned int sw_index);
void sfc_rx_qstop(struct sfc_adapter *sa, unsigned int sw_index);
void sfc_rx_qflush_done(struct sfc_rxq *rxq);
void sfc_rx_qflush_failed(struct sfc_rxq *rxq);
unsigned int sfc_rx_qdesc_npending(struct sfc_adapter *sa,
unsigned int sw_index);
int sfc_rx_qdesc_done(struct sfc_dp_rxq *dp_rxq, unsigned int offset);
#if EFSYS_OPT_RX_SCALE
efx_rx_hash_type_t sfc_rte_to_efx_hash_type(uint64_t rss_hf);
uint64_t sfc_efx_to_rte_hash_type(efx_rx_hash_type_t efx_hash_types);
#endif
#ifdef __cplusplus
}
#endif
#endif /* _SFC_RX_H */
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