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/*-
* BSD LICENSE
*
* Copyright (c) 2017 Solarflare Communications Inc.
* All rights reserved.
*
* This software was jointly developed between OKTET Labs (under contract
* for Solarflare) and Solarflare Communications, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _SFC_DP_H
#define _SFC_DP_H
#include <stdbool.h>
#include <sys/queue.h>
#include <rte_pci.h>
#ifdef __cplusplus
extern "C" {
#endif
#define SFC_DIV_ROUND_UP(a, b) \
__extension__ ({ \
typeof(a) _a = (a); \
typeof(b) _b = (b); \
\
(_a + (_b - 1)) / _b; \
})
/**
* Datapath exception handler to be provided by the control path.
*/
typedef void (sfc_dp_exception_t)(void *ctrl);
enum sfc_dp_type {
SFC_DP_RX = 0, /**< Receive datapath */
SFC_DP_TX, /**< Transmit datapath */
};
/** Datapath queue run-time information */
struct sfc_dp_queue {
uint16_t port_id;
uint16_t queue_id;
struct rte_pci_addr pci_addr;
};
void sfc_dp_queue_init(struct sfc_dp_queue *dpq,
uint16_t port_id, uint16_t queue_id,
const struct rte_pci_addr *pci_addr);
/*
* Helper macro to define datapath logging macros and have uniform
* logging.
*/
#define SFC_DP_LOG(dp_name, level, dpq, ...) \
do { \
const struct sfc_dp_queue *_dpq = (dpq); \
const struct rte_pci_addr *_addr = &(_dpq)->pci_addr; \
\
RTE_LOG(level, PMD, \
RTE_FMT("%s " PCI_PRI_FMT \
" #%" PRIu16 ".%" PRIu16 ": " \
RTE_FMT_HEAD(__VA_ARGS__,) "\n", \
dp_name, \
_addr->domain, _addr->bus, \
_addr->devid, _addr->function, \
_dpq->port_id, _dpq->queue_id, \
RTE_FMT_TAIL(__VA_ARGS__,))); \
} while (0)
/** Datapath definition */
struct sfc_dp {
TAILQ_ENTRY(sfc_dp) links;
const char *name;
enum sfc_dp_type type;
/* Mask of required hardware/firmware capabilities */
unsigned int hw_fw_caps;
#define SFC_DP_HW_FW_CAP_EF10 0x1
};
/** List of datapath variants */
TAILQ_HEAD(sfc_dp_list, sfc_dp);
/* Check if available HW/FW capabilities are sufficient for the datapath */
static inline bool
sfc_dp_match_hw_fw_caps(const struct sfc_dp *dp, unsigned int avail_caps)
{
return (dp->hw_fw_caps & avail_caps) == dp->hw_fw_caps;
}
struct sfc_dp *sfc_dp_find_by_name(struct sfc_dp_list *head,
enum sfc_dp_type type, const char *name);
struct sfc_dp *sfc_dp_find_by_caps(struct sfc_dp_list *head,
enum sfc_dp_type type,
unsigned int avail_caps);
int sfc_dp_register(struct sfc_dp_list *head, struct sfc_dp *entry);
#ifdef __cplusplus
}
#endif
#endif /* _SFC_DP_H */
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