diff options
Diffstat (limited to 'drivers/net/sfc/sfc_tx.h')
| -rw-r--r-- | drivers/net/sfc/sfc_tx.h | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/drivers/net/sfc/sfc_tx.h b/drivers/net/sfc/sfc_tx.h new file mode 100644 index 00000000..6c3ac3b6 --- /dev/null +++ b/drivers/net/sfc/sfc_tx.h @@ -0,0 +1,164 @@ +/*- + * 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 */ |