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_mempool.h>
37 #include <rte_ethdev.h>
49 * Software Rx descriptor information associated with hardware Rx
52 struct sfc_rx_sw_desc {
53 struct rte_mbuf *mbuf;
58 /** Receive queue state bits */
59 enum sfc_rxq_state_bit {
60 SFC_RXQ_INITIALIZED_BIT = 0,
61 #define SFC_RXQ_INITIALIZED (1 << SFC_RXQ_INITIALIZED_BIT)
63 #define SFC_RXQ_STARTED (1 << SFC_RXQ_STARTED_BIT)
65 #define SFC_RXQ_FLUSHING (1 << SFC_RXQ_FLUSHING_BIT)
67 #define SFC_RXQ_FLUSHED (1 << SFC_RXQ_FLUSHED_BIT)
68 SFC_RXQ_FLUSH_FAILED_BIT,
69 #define SFC_RXQ_FLUSH_FAILED (1 << SFC_RXQ_FLUSH_FAILED_BIT)
73 * Receive queue information used on data path.
74 * Allocated on the socket specified on the queue setup.
77 /* Used on data path */
79 struct sfc_rx_sw_desc *sw_desc;
81 #define SFC_RXQ_FLAG_STARTED 0x1
82 #define SFC_RXQ_FLAG_RUNNING 0x2
83 #define SFC_RXQ_FLAG_RSS_HASH 0x4
84 unsigned int ptr_mask;
86 unsigned int completed;
93 unsigned int refill_threshold;
96 struct rte_mempool *refill_mb_pool;
100 /* Not used on data path */
101 unsigned int hw_index;
105 static inline unsigned int
106 sfc_rxq_sw_index_by_hw_index(unsigned int hw_index)
111 static inline unsigned int
112 sfc_rxq_sw_index(const struct sfc_rxq *rxq)
114 return sfc_rxq_sw_index_by_hw_index(rxq->hw_index);
118 * Receive queue information used during setup/release only.
119 * Allocated on the same socket as adapter data.
121 struct sfc_rxq_info {
122 unsigned int max_entries;
123 unsigned int entries;
126 boolean_t deferred_start;
127 boolean_t deferred_started;
130 int sfc_rx_init(struct sfc_adapter *sa);
131 void sfc_rx_fini(struct sfc_adapter *sa);
132 int sfc_rx_start(struct sfc_adapter *sa);
133 void sfc_rx_stop(struct sfc_adapter *sa);
135 int sfc_rx_qinit(struct sfc_adapter *sa, unsigned int rx_queue_id,
136 uint16_t nb_rx_desc, unsigned int socket_id,
137 const struct rte_eth_rxconf *rx_conf,
138 struct rte_mempool *mb_pool);
139 void sfc_rx_qfini(struct sfc_adapter *sa, unsigned int sw_index);
140 int sfc_rx_qstart(struct sfc_adapter *sa, unsigned int sw_index);
141 void sfc_rx_qstop(struct sfc_adapter *sa, unsigned int sw_index);
143 void sfc_rx_qflush_done(struct sfc_rxq *rxq);
144 void sfc_rx_qflush_failed(struct sfc_rxq *rxq);
146 uint16_t sfc_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
149 unsigned int sfc_rx_qdesc_npending(struct sfc_adapter *sa,
150 unsigned int sw_index);
151 int sfc_rx_qdesc_done(struct sfc_rxq *rxq, unsigned int offset);
153 #if EFSYS_OPT_RX_SCALE
154 efx_rx_hash_type_t sfc_rte_to_efx_hash_type(uint64_t rss_hf);
155 uint64_t sfc_efx_to_rte_hash_type(efx_rx_hash_type_t efx_hash_types);
161 #endif /* _SFC_RX_H */