2 * Copyright (c) 2016 Solarflare Communications Inc.
5 * This software was jointly developed between OKTET Labs (under contract
6 * for Solarflare) and Solarflare Communications, Inc.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
11 * 1. Redistributions of source code must retain the above copyright notice,
12 * this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright notice,
14 * this list of conditions and the following disclaimer in the documentation
15 * and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
19 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
21 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
22 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
23 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
24 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
26 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
27 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 #include <rte_ethdev.h>
43 * A segment must not cross 4K boundary
44 * (this is a requirement of NIC TX descriptors)
46 #define SFC_TX_SEG_BOUNDARY 4096
51 struct sfc_tx_sw_desc {
52 struct rte_mbuf *mbuf;
53 #ifdef RTE_LIBRTE_SFC_EFX_TSO
54 uint8_t *tsoh; /* Buffer to store TSO header */
55 #endif /* RTE_LIBRTE_SFC_EFX_TSO */
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_RUNNING (1 << SFC_TXQ_RUNNING_BIT)
66 #define SFC_TXQ_FLUSHING (1 << SFC_TXQ_FLUSHING_BIT)
68 #define SFC_TXQ_FLUSHED (1 << SFC_TXQ_FLUSHED_BIT)
73 struct sfc_tx_sw_desc *sw_ring;
75 unsigned int ptr_mask;
76 efx_desc_t *pend_desc;
81 unsigned int completed;
82 unsigned int free_thresh;
85 unsigned int hw_index;
89 static inline unsigned int
90 sfc_txq_sw_index(const struct sfc_txq *txq)
98 boolean_t deferred_start;
99 boolean_t deferred_started;
102 int sfc_tx_init(struct sfc_adapter *sa);
103 void sfc_tx_fini(struct sfc_adapter *sa);
105 int sfc_tx_qinit(struct sfc_adapter *sa, unsigned int sw_index,
106 uint16_t nb_tx_desc, unsigned int socket_id,
107 const struct rte_eth_txconf *tx_conf);
108 void sfc_tx_qfini(struct sfc_adapter *sa, unsigned int sw_index);
110 void sfc_tx_qflush_done(struct sfc_txq *txq);
111 int sfc_tx_qstart(struct sfc_adapter *sa, unsigned int sw_index);
112 void sfc_tx_qstop(struct sfc_adapter *sa, unsigned int sw_index);
113 int sfc_tx_start(struct sfc_adapter *sa);
114 void sfc_tx_stop(struct sfc_adapter *sa);
116 uint16_t sfc_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
119 #ifdef RTE_LIBRTE_SFC_EFX_TSO
120 /* From 'sfc_tso.c' */
121 int sfc_tso_alloc_tsoh_objs(struct sfc_tx_sw_desc *sw_ring,
122 unsigned int txq_entries, unsigned int socket_id);
123 void sfc_tso_free_tsoh_objs(struct sfc_tx_sw_desc *sw_ring,
124 unsigned int txq_entries);
125 int sfc_tso_do(struct sfc_txq *txq, unsigned int idx, struct rte_mbuf **in_seg,
126 size_t *in_off, efx_desc_t **pend, unsigned int *pkt_descs,
128 #else /* !RTE_LIBRTE_SFC_EFX_TSO */
130 sfc_tso_alloc_tsoh_objs(__rte_unused struct sfc_tx_sw_desc *sw_ring,
131 __rte_unused unsigned int txq_entries,
132 __rte_unused unsigned int socket_id)
138 sfc_tso_free_tsoh_objs(__rte_unused struct sfc_tx_sw_desc *sw_ring,
139 __rte_unused unsigned int txq_entries)
142 #endif /* RTE_LIBRTE_SFC_EFX_TSO */
147 #endif /* _SFC_TX_H */