1 /* SPDX-License-Identifier: BSD-3-Clause 2 * 3 * Copyright(c) 2019-2021 Xilinx, Inc. 4 * Copyright(c) 2016-2019 Solarflare Communications Inc. 5 * 6 * This software was jointly developed between OKTET Labs (under contract 7 * for Solarflare) and Solarflare Communications, Inc. 8 */ 9 10 #ifndef _SFC_TX_H 11 #define _SFC_TX_H 12 13 #include <rte_mbuf.h> 14 #include <ethdev_driver.h> 15 16 #include "efx.h" 17 18 #include "sfc_dp_tx.h" 19 20 #ifdef __cplusplus 21 extern "C" { 22 #endif 23 24 struct sfc_adapter; 25 struct sfc_evq; 26 27 /** 28 * Software Tx descriptor information associated with hardware Tx 29 * descriptor. 30 */ 31 struct sfc_efx_tx_sw_desc { 32 struct rte_mbuf *mbuf; 33 uint8_t *tsoh; /* Buffer to store TSO header */ 34 }; 35 36 enum sfc_txq_state_bit { 37 SFC_TXQ_INITIALIZED_BIT = 0, 38 #define SFC_TXQ_INITIALIZED (1 << SFC_TXQ_INITIALIZED_BIT) 39 SFC_TXQ_STARTED_BIT, 40 #define SFC_TXQ_STARTED (1 << SFC_TXQ_STARTED_BIT) 41 SFC_TXQ_FLUSHING_BIT, 42 #define SFC_TXQ_FLUSHING (1 << SFC_TXQ_FLUSHING_BIT) 43 SFC_TXQ_FLUSHED_BIT, 44 #define SFC_TXQ_FLUSHED (1 << SFC_TXQ_FLUSHED_BIT) 45 SFC_TXQ_FLUSH_FAILED_BIT, 46 #define SFC_TXQ_FLUSH_FAILED (1 << SFC_TXQ_FLUSH_FAILED_BIT) 47 }; 48 49 /** 50 * Transmit queue control primary process-only information. 51 * Not used on datapath. 52 */ 53 struct sfc_txq { 54 unsigned int hw_index; 55 struct sfc_evq *evq; 56 efsys_mem_t mem; 57 efx_txq_t *common; 58 }; 59 60 struct sfc_txq *sfc_txq_by_dp_txq(const struct sfc_dp_txq *dp_txq); 61 62 /** 63 * Transmit queue information used on libefx-based data path. 64 * Allocated on the socket specified on the queue setup. 65 */ 66 struct sfc_efx_txq { 67 struct sfc_evq *evq; 68 struct sfc_efx_tx_sw_desc *sw_ring; 69 unsigned int ptr_mask; 70 efx_desc_t *pend_desc; 71 efx_txq_t *common; 72 unsigned int added; 73 unsigned int pending; 74 unsigned int completed; 75 unsigned int max_fill_level; 76 unsigned int free_thresh; 77 uint16_t hw_vlan_tci; 78 uint16_t dma_desc_size_max; 79 80 unsigned int hw_index; 81 unsigned int flags; 82 #define SFC_EFX_TXQ_FLAG_STARTED 0x1 83 #define SFC_EFX_TXQ_FLAG_RUNNING 0x2 84 85 /* Datapath transmit queue anchor */ 86 struct sfc_dp_txq dp; 87 }; 88 89 static inline struct sfc_efx_txq * 90 sfc_efx_txq_by_dp_txq(struct sfc_dp_txq *dp_txq) 91 { 92 return container_of(dp_txq, struct sfc_efx_txq, dp); 93 } 94 95 struct sfc_txq_info { 96 unsigned int state; 97 unsigned int entries; 98 struct sfc_dp_txq *dp; 99 boolean_t deferred_start; 100 boolean_t deferred_started; 101 unsigned int free_thresh; 102 uint64_t offloads; 103 }; 104 105 struct sfc_txq_info *sfc_txq_info_by_dp_txq(const struct sfc_dp_txq *dp_txq); 106 107 int sfc_tx_configure(struct sfc_adapter *sa); 108 void sfc_tx_close(struct sfc_adapter *sa); 109 110 int sfc_tx_qinit(struct sfc_adapter *sa, unsigned int sw_index, 111 uint16_t nb_tx_desc, unsigned int socket_id, 112 const struct rte_eth_txconf *tx_conf); 113 void sfc_tx_qfini(struct sfc_adapter *sa, unsigned int sw_index); 114 115 void sfc_tx_qflush_done(struct sfc_txq_info *txq_info); 116 int sfc_tx_qstart(struct sfc_adapter *sa, unsigned int sw_index); 117 void sfc_tx_qstop(struct sfc_adapter *sa, unsigned int sw_index); 118 int sfc_tx_start(struct sfc_adapter *sa); 119 void sfc_tx_stop(struct sfc_adapter *sa); 120 121 uint64_t sfc_tx_get_dev_offload_caps(struct sfc_adapter *sa); 122 uint64_t sfc_tx_get_queue_offload_caps(struct sfc_adapter *sa); 123 124 /* From 'sfc_tso.c' */ 125 int sfc_efx_tso_alloc_tsoh_objs(struct sfc_efx_tx_sw_desc *sw_ring, 126 unsigned int txq_entries, 127 unsigned int socket_id); 128 void sfc_efx_tso_free_tsoh_objs(struct sfc_efx_tx_sw_desc *sw_ring, 129 unsigned int txq_entries); 130 int sfc_efx_tso_do(struct sfc_efx_txq *txq, unsigned int idx, 131 struct rte_mbuf **in_seg, size_t *in_off, efx_desc_t **pend, 132 unsigned int *pkt_descs, size_t *pkt_len); 133 134 #ifdef __cplusplus 135 } 136 #endif 137 #endif /* _SFC_TX_H */ 138