1/*-
2 * Copyright (c) 2010-2011 Solarflare Communications, Inc.
3 * All rights reserved.
4 *
5 * This software was developed in part by Philip Paeps under contract for
6 * Solarflare Communications, Inc.
7 *
8 * Redistribution and use in source and binary forms, with or without

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21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD: stable/10/sys/dev/sfxge/sfxge_rx.h 280502 2015-03-25 10:01:07Z arybchik $
30 */
31
32#ifndef _SFXGE_RX_H
33#define _SFXGE_RX_H
34
35#define SFXGE_MAGIC_RESERVED 0x8000
36
37#define SFXGE_MAGIC_DMAQ_LABEL_WIDTH 6
38#define SFXGE_MAGIC_DMAQ_LABEL_MASK \
39 ((1 << SFXGE_MAGIC_DMAQ_LABEL_WIDTH) - 1)
40
41#define SFXGE_MAGIC_RX_QFLUSH_DONE \
42 (SFXGE_MAGIC_RESERVED | (1 << SFXGE_MAGIC_DMAQ_LABEL_WIDTH))

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54
55struct sfxge_rx_sw_desc {
56 struct mbuf *mbuf;
57 bus_dmamap_t map;
58 int flags;
59 int size;
60};
61
62/**
63 * struct sfxge_lro_conn - Connection state for software LRO
64 * @link: Link for hash table and free list.
65 * @active_link: Link for active_conns list
66 * @l2_id: Identifying information from layer 2
67 * @conn_hash: Hash of connection 4-tuple
68 * @nh: IP (v4 or v6) header of super-packet
69 * @source: Source TCP port number

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134 unsigned n_slow_start;
135 unsigned n_misorder;
136 unsigned n_too_many;
137 unsigned n_new_stream;
138 unsigned n_drop_idle;
139 unsigned n_drop_closed;
140};
141
142enum sfxge_flush_state {
143 SFXGE_FLUSH_DONE = 0,
144 SFXGE_FLUSH_PENDING,
145 SFXGE_FLUSH_FAILED
146};
147
148enum sfxge_rxq_state {
149 SFXGE_RXQ_UNINITIALIZED = 0,

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162 unsigned int entries;
163 unsigned int ptr_mask;
164
165 struct sfxge_rx_sw_desc *queue __aligned(CACHE_LINE_SIZE);
166 unsigned int added;
167 unsigned int pending;
168 unsigned int completed;
169 unsigned int loopback;
170 struct sfxge_lro_state lro;
171 unsigned int refill_threshold;
172 struct callout refill_callout;
173 unsigned int refill_delay;
174
175 efx_rxq_t *common __aligned(CACHE_LINE_SIZE);
176 volatile enum sfxge_flush_state flush_state;
177};
178

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