diff options
Diffstat (limited to 'drivers/net/sfc/sfc_rx.h')
| -rw-r--r-- | drivers/net/sfc/sfc_rx.h | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/drivers/net/sfc/sfc_rx.h b/drivers/net/sfc/sfc_rx.h new file mode 100644 index 00000000..9e6282ea --- /dev/null +++ b/drivers/net/sfc/sfc_rx.h @@ -0,0 +1,180 @@ +/*- + * 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 */ |