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 struct sfc_txq_info *sfc_txq_info_by_ethdev_qid(struct sfc_adapter_shared *sas, 62 sfc_ethdev_qid_t ethdev_qid); 63 /** 64 * Transmit queue information used on libefx-based data path. 65 * Allocated on the socket specified on the queue setup. 66 */ 67 struct sfc_efx_txq { 68 struct sfc_evq *evq; 69 struct sfc_efx_tx_sw_desc *sw_ring; 70 unsigned int ptr_mask; 71 efx_desc_t *pend_desc; 72 efx_txq_t *common; 73 unsigned int added; 74 unsigned int pending; 75 unsigned int completed; 76 unsigned int max_fill_level; 77 unsigned int free_thresh; 78 uint16_t hw_vlan_tci; 79 uint16_t dma_desc_size_max; 80 81 unsigned int hw_index; 82 unsigned int flags; 83 #define SFC_EFX_TXQ_FLAG_STARTED 0x1 84 #define SFC_EFX_TXQ_FLAG_RUNNING 0x2 85 86 /* Datapath transmit queue anchor */ 87 struct sfc_dp_txq dp; 88 }; 89 90 static inline struct sfc_efx_txq * 91 sfc_efx_txq_by_dp_txq(struct sfc_dp_txq *dp_txq) 92 { 93 return container_of(dp_txq, struct sfc_efx_txq, dp); 94 } 95 96 struct sfc_txq_info { 97 unsigned int state; 98 unsigned int entries; 99 struct sfc_dp_txq *dp; 100 boolean_t deferred_start; 101 boolean_t deferred_started; 102 unsigned int free_thresh; 103 uint64_t offloads; 104 }; 105 106 struct sfc_txq_info *sfc_txq_info_by_dp_txq(const struct sfc_dp_txq *dp_txq); 107 108 int sfc_tx_configure(struct sfc_adapter *sa); 109 void sfc_tx_close(struct sfc_adapter *sa); 110 111 int sfc_tx_qinit_info(struct sfc_adapter *sa, sfc_sw_index_t sw_index); 112 int sfc_tx_qinit(struct sfc_adapter *sa, sfc_sw_index_t sw_index, 113 uint16_t nb_tx_desc, unsigned int socket_id, 114 const struct rte_eth_txconf *tx_conf); 115 void sfc_tx_qfini(struct sfc_adapter *sa, sfc_sw_index_t sw_index); 116 117 void sfc_tx_qflush_done(struct sfc_txq_info *txq_info); 118 int sfc_tx_qstart(struct sfc_adapter *sa, sfc_sw_index_t sw_index); 119 void sfc_tx_qstop(struct sfc_adapter *sa, sfc_sw_index_t sw_index); 120 int sfc_tx_start(struct sfc_adapter *sa); 121 void sfc_tx_stop(struct sfc_adapter *sa); 122 123 uint64_t sfc_tx_get_dev_offload_caps(struct sfc_adapter *sa); 124 uint64_t sfc_tx_get_queue_offload_caps(struct sfc_adapter *sa); 125 126 /* From 'sfc_tso.c' */ 127 int sfc_efx_tso_alloc_tsoh_objs(struct sfc_efx_tx_sw_desc *sw_ring, 128 unsigned int txq_entries, 129 unsigned int socket_id); 130 void sfc_efx_tso_free_tsoh_objs(struct sfc_efx_tx_sw_desc *sw_ring, 131 unsigned int txq_entries); 132 int sfc_efx_tso_do(struct sfc_efx_txq *txq, unsigned int idx, 133 struct rte_mbuf **in_seg, size_t *in_off, efx_desc_t **pend, 134 unsigned int *pkt_descs, size_t *pkt_len); 135 136 #ifdef __cplusplus 137 } 138 #endif 139 #endif /* _SFC_TX_H */ 140