4 * Copyright (c) 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 <sys/queue.h>
44 #define SFC_DIV_ROUND_UP(a, b) \
49 (_a + (_b - 1)) / _b; \
53 * Datapath exception handler to be provided by the control path.
55 typedef void (sfc_dp_exception_t)(void *ctrl);
58 SFC_DP_RX = 0, /**< Receive datapath */
59 SFC_DP_TX, /**< Transmit datapath */
63 /** Datapath queue run-time information */
67 struct rte_pci_addr pci_addr;
70 void sfc_dp_queue_init(struct sfc_dp_queue *dpq,
71 uint16_t port_id, uint16_t queue_id,
72 const struct rte_pci_addr *pci_addr);
75 * Helper macro to define datapath logging macros and have uniform
78 #define SFC_DP_LOG(dp_name, level, dpq, ...) \
80 const struct sfc_dp_queue *_dpq = (dpq); \
81 const struct rte_pci_addr *_addr = &(_dpq)->pci_addr; \
84 RTE_FMT("%s " PCI_PRI_FMT \
85 " #%" PRIu16 ".%" PRIu16 ": " \
86 RTE_FMT_HEAD(__VA_ARGS__,) "\n", \
88 _addr->domain, _addr->bus, \
89 _addr->devid, _addr->function, \
90 _dpq->port_id, _dpq->queue_id, \
91 RTE_FMT_TAIL(__VA_ARGS__,))); \
95 /** Datapath definition */
97 TAILQ_ENTRY(sfc_dp) links;
99 enum sfc_dp_type type;
100 /* Mask of required hardware/firmware capabilities */
101 unsigned int hw_fw_caps;
102 #define SFC_DP_HW_FW_CAP_EF10 0x1
105 /** List of datapath variants */
106 TAILQ_HEAD(sfc_dp_list, sfc_dp);
108 /* Check if available HW/FW capabilities are sufficient for the datapath */
110 sfc_dp_match_hw_fw_caps(const struct sfc_dp *dp, unsigned int avail_caps)
112 return (dp->hw_fw_caps & avail_caps) == dp->hw_fw_caps;
115 struct sfc_dp *sfc_dp_find_by_name(struct sfc_dp_list *head,
116 enum sfc_dp_type type, const char *name);
117 struct sfc_dp *sfc_dp_find_by_caps(struct sfc_dp_list *head,
118 enum sfc_dp_type type,
119 unsigned int avail_caps);
120 int sfc_dp_register(struct sfc_dp_list *head, struct sfc_dp *entry);
125 #endif /* _SFC_DP_H */