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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_TX_H
#define _SFC_TX_H
#include <rte_mbuf.h>
#include <rte_ethdev.h>
#include "efx.h"
#include "sfc_dp_tx.h"
#ifdef __cplusplus
extern "C" {
#endif
struct sfc_adapter;
struct sfc_evq;
/**
* Software Tx descriptor information associated with hardware Tx
* descriptor.
*/
struct sfc_efx_tx_sw_desc {
struct rte_mbuf *mbuf;
uint8_t *tsoh; /* Buffer to store TSO header */
};
enum sfc_txq_state_bit {
SFC_TXQ_INITIALIZED_BIT = 0,
#define SFC_TXQ_INITIALIZED (1 << SFC_TXQ_INITIALIZED_BIT)
SFC_TXQ_STARTED_BIT,
#define SFC_TXQ_STARTED (1 << SFC_TXQ_STARTED_BIT)
SFC_TXQ_FLUSHING_BIT,
#define SFC_TXQ_FLUSHING (1 << SFC_TXQ_FLUSHING_BIT)
SFC_TXQ_FLUSHED_BIT,
#define SFC_TXQ_FLUSHED (1 << SFC_TXQ_FLUSHED_BIT)
};
/**
* Transmit queue control information. Not used on datapath.
* Allocated on the socket specified on the queue setup.
*/
struct sfc_txq {
unsigned int state;
unsigned int hw_index;
struct sfc_evq *evq;
efsys_mem_t mem;
struct sfc_dp_txq *dp;
efx_txq_t *common;
unsigned int free_thresh;
unsigned int flags;
};
static inline unsigned int
sfc_txq_sw_index_by_hw_index(unsigned int hw_index)
{
return hw_index;
}
static inline unsigned int
sfc_txq_sw_index(const struct sfc_txq *txq)
{
return sfc_txq_sw_index_by_hw_index(txq->hw_index);
}
struct sfc_txq *sfc_txq_by_dp_txq(const struct sfc_dp_txq *dp_txq);
/**
* Transmit queue information used on libefx-based data path.
* Allocated on the socket specified on the queue setup.
*/
struct sfc_efx_txq {
struct sfc_evq *evq;
struct sfc_efx_tx_sw_desc *sw_ring;
unsigned int ptr_mask;
efx_desc_t *pend_desc;
efx_txq_t *common;
unsigned int added;
unsigned int pending;
unsigned int completed;
unsigned int free_thresh;
uint16_t hw_vlan_tci;
uint16_t dma_desc_size_max;
unsigned int hw_index;
unsigned int flags;
#define SFC_EFX_TXQ_FLAG_STARTED 0x1
#define SFC_EFX_TXQ_FLAG_RUNNING 0x2
/* Datapath transmit queue anchor */
struct sfc_dp_txq dp;
};
static inline struct sfc_efx_txq *
sfc_efx_txq_by_dp_txq(struct sfc_dp_txq *dp_txq)
{
return container_of(dp_txq, struct sfc_efx_txq, dp);
}
struct sfc_txq_info {
unsigned int entries;
struct sfc_txq *txq;
boolean_t deferred_start;
boolean_t deferred_started;
};
int sfc_tx_configure(struct sfc_adapter *sa);
void sfc_tx_close(struct sfc_adapter *sa);
int sfc_tx_qinit(struct sfc_adapter *sa, unsigned int sw_index,
uint16_t nb_tx_desc, unsigned int socket_id,
const struct rte_eth_txconf *tx_conf);
void sfc_tx_qfini(struct sfc_adapter *sa, unsigned int sw_index);
void sfc_tx_qflush_done(struct sfc_txq *txq);
int sfc_tx_qstart(struct sfc_adapter *sa, unsigned int sw_index);
void sfc_tx_qstop(struct sfc_adapter *sa, unsigned int sw_index);
int sfc_tx_start(struct sfc_adapter *sa);
void sfc_tx_stop(struct sfc_adapter *sa);
/* From 'sfc_tso.c' */
int sfc_efx_tso_alloc_tsoh_objs(struct sfc_efx_tx_sw_desc *sw_ring,
unsigned int txq_entries,
unsigned int socket_id);
void sfc_efx_tso_free_tsoh_objs(struct sfc_efx_tx_sw_desc *sw_ring,
unsigned int txq_entries);
int sfc_efx_tso_do(struct sfc_efx_txq *txq, unsigned int idx,
struct rte_mbuf **in_seg, size_t *in_off, efx_desc_t **pend,
unsigned int *pkt_descs, size_t *pkt_len);
#ifdef __cplusplus
}
#endif
#endif /* _SFC_TX_H */
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