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>
47 struct sfc_tx_sw_desc {
48 struct rte_mbuf *mbuf;
49 uint8_t *tsoh; /* Buffer to store TSO header */
52 enum sfc_txq_state_bit {
53 SFC_TXQ_INITIALIZED_BIT = 0,
54 #define SFC_TXQ_INITIALIZED (1 << SFC_TXQ_INITIALIZED_BIT)
56 #define SFC_TXQ_STARTED (1 << SFC_TXQ_STARTED_BIT)
58 #define SFC_TXQ_RUNNING (1 << SFC_TXQ_RUNNING_BIT)
60 #define SFC_TXQ_FLUSHING (1 << SFC_TXQ_FLUSHING_BIT)
62 #define SFC_TXQ_FLUSHED (1 << SFC_TXQ_FLUSHED_BIT)
67 struct sfc_tx_sw_desc *sw_ring;
69 unsigned int ptr_mask;
70 efx_desc_t *pend_desc;
75 unsigned int completed;
76 unsigned int free_thresh;
78 uint16_t dma_desc_size_max;
80 unsigned int hw_index;
84 static inline unsigned int
85 sfc_txq_sw_index(const struct sfc_txq *txq)
93 boolean_t deferred_start;
94 boolean_t deferred_started;
97 int sfc_tx_init(struct sfc_adapter *sa);
98 void sfc_tx_fini(struct sfc_adapter *sa);
100 int sfc_tx_qinit(struct sfc_adapter *sa, unsigned int sw_index,
101 uint16_t nb_tx_desc, unsigned int socket_id,
102 const struct rte_eth_txconf *tx_conf);
103 void sfc_tx_qfini(struct sfc_adapter *sa, unsigned int sw_index);
105 void sfc_tx_qflush_done(struct sfc_txq *txq);
106 int sfc_tx_qstart(struct sfc_adapter *sa, unsigned int sw_index);
107 void sfc_tx_qstop(struct sfc_adapter *sa, unsigned int sw_index);
108 int sfc_tx_start(struct sfc_adapter *sa);
109 void sfc_tx_stop(struct sfc_adapter *sa);
111 uint16_t sfc_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
114 /* From 'sfc_tso.c' */
115 int sfc_tso_alloc_tsoh_objs(struct sfc_tx_sw_desc *sw_ring,
116 unsigned int txq_entries, unsigned int socket_id);
117 void sfc_tso_free_tsoh_objs(struct sfc_tx_sw_desc *sw_ring,
118 unsigned int txq_entries);
119 int sfc_tso_do(struct sfc_txq *txq, unsigned int idx, struct rte_mbuf **in_seg,
120 size_t *in_off, efx_desc_t **pend, unsigned int *pkt_descs,
126 #endif /* _SFC_TX_H */