4 * Copyright (c) 2016-2017 Solarflare Communications Inc.
7 * This software was jointly developed between OKTET Labs (under contract
8 * for Solarflare) and Solarflare Communications, Inc.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions are met:
13 * 1. Redistributions of source code must retain the above copyright notice,
14 * this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright notice,
16 * this list of conditions and the following disclaimer in the documentation
17 * and/or other materials provided with the distribution.
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
29 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 #include <rte_ethdev.h>
40 #include "sfc_dp_tx.h"
50 * Software Tx descriptor information associated with hardware Tx
53 struct sfc_efx_tx_sw_desc {
54 struct rte_mbuf *mbuf;
55 uint8_t *tsoh; /* Buffer to store TSO header */
58 enum sfc_txq_state_bit {
59 SFC_TXQ_INITIALIZED_BIT = 0,
60 #define SFC_TXQ_INITIALIZED (1 << SFC_TXQ_INITIALIZED_BIT)
62 #define SFC_TXQ_STARTED (1 << SFC_TXQ_STARTED_BIT)
64 #define SFC_TXQ_FLUSHING (1 << SFC_TXQ_FLUSHING_BIT)
66 #define SFC_TXQ_FLUSHED (1 << SFC_TXQ_FLUSHED_BIT)
67 SFC_TXQ_FLUSH_FAILED_BIT,
68 #define SFC_TXQ_FLUSH_FAILED (1 << SFC_TXQ_FLUSH_FAILED_BIT)
72 * Transmit queue control information. Not used on datapath.
73 * Allocated on the socket specified on the queue setup.
77 unsigned int hw_index;
80 struct sfc_dp_txq *dp;
82 unsigned int free_thresh;
86 static inline unsigned int
87 sfc_txq_sw_index_by_hw_index(unsigned int hw_index)
92 static inline unsigned int
93 sfc_txq_sw_index(const struct sfc_txq *txq)
95 return sfc_txq_sw_index_by_hw_index(txq->hw_index);
98 struct sfc_txq *sfc_txq_by_dp_txq(const struct sfc_dp_txq *dp_txq);
101 * Transmit queue information used on libefx-based data path.
102 * Allocated on the socket specified on the queue setup.
106 struct sfc_efx_tx_sw_desc *sw_ring;
107 unsigned int ptr_mask;
108 efx_desc_t *pend_desc;
111 unsigned int pending;
112 unsigned int completed;
113 unsigned int free_thresh;
114 uint16_t hw_vlan_tci;
115 uint16_t dma_desc_size_max;
117 unsigned int hw_index;
119 #define SFC_EFX_TXQ_FLAG_STARTED 0x1
120 #define SFC_EFX_TXQ_FLAG_RUNNING 0x2
122 /* Datapath transmit queue anchor */
123 struct sfc_dp_txq dp;
126 static inline struct sfc_efx_txq *
127 sfc_efx_txq_by_dp_txq(struct sfc_dp_txq *dp_txq)
129 return container_of(dp_txq, struct sfc_efx_txq, dp);
132 struct sfc_txq_info {
133 unsigned int entries;
135 boolean_t deferred_start;
136 boolean_t deferred_started;
139 int sfc_tx_configure(struct sfc_adapter *sa);
140 void sfc_tx_close(struct sfc_adapter *sa);
142 int sfc_tx_qinit(struct sfc_adapter *sa, unsigned int sw_index,
143 uint16_t nb_tx_desc, unsigned int socket_id,
144 const struct rte_eth_txconf *tx_conf);
145 void sfc_tx_qfini(struct sfc_adapter *sa, unsigned int sw_index);
147 void sfc_tx_qflush_done(struct sfc_txq *txq);
148 int sfc_tx_qstart(struct sfc_adapter *sa, unsigned int sw_index);
149 void sfc_tx_qstop(struct sfc_adapter *sa, unsigned int sw_index);
150 int sfc_tx_start(struct sfc_adapter *sa);
151 void sfc_tx_stop(struct sfc_adapter *sa);
153 /* From 'sfc_tso.c' */
154 int sfc_efx_tso_alloc_tsoh_objs(struct sfc_efx_tx_sw_desc *sw_ring,
155 unsigned int txq_entries,
156 unsigned int socket_id);
157 void sfc_efx_tso_free_tsoh_objs(struct sfc_efx_tx_sw_desc *sw_ring,
158 unsigned int txq_entries);
159 int sfc_efx_tso_do(struct sfc_efx_txq *txq, unsigned int idx,
160 struct rte_mbuf **in_seg, size_t *in_off, efx_desc_t **pend,
161 unsigned int *pkt_descs, size_t *pkt_len);
166 #endif /* _SFC_TX_H */