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/* Copyright (c) 2013, Linaro Limited
* All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
/**
* @file
*
* ODP configuration
*/
#ifndef ODP_CONFIG_H_
#define ODP_CONFIG_H_
#ifdef __cplusplus
extern "C" {
#endif
/** @addtogroup odp_compiler_optim
* Macro for maximum number of resources in ODP.
* @{
*/
/**
* Maximum number of threads
*/
#define ODP_CONFIG_MAX_THREADS 128
/**
* Maximum number of pools
*/
#define ODP_CONFIG_POOLS 16
/**
* Maximum number of queues
*/
#define ODP_CONFIG_QUEUES 1024
/**
* Number of scheduling priorities
*/
#define ODP_CONFIG_SCHED_PRIOS 8
/**
* Maximum number of packet IO resources
*/
#define ODP_CONFIG_PKTIO_ENTRIES 64
/**
* Minimum buffer alignment
*
* This defines the minimum supported buffer alignment. Requests for values
* below this will be rounded up to this value.
*/
#define ODP_CONFIG_BUFFER_ALIGN_MIN 8
/**
* Maximum buffer alignment
*
* This defines the maximum supported buffer alignment. Requests for values
* above this will fail.
*/
#define ODP_CONFIG_BUFFER_ALIGN_MAX (4*1024)
/**
* Default packet headroom
*
* This defines the minimum number of headroom bytes that newly created packets
* have by default. The default apply to both ODP packet input and user
* allocated packets. Implementations may reserve a larger than minimum headroom
* size e.g. due to HW or a protocol specific alignment requirement.
*
* @internal In linux-generic implementation:
* The default value (66) allows a 1500-byte packet to be received into a single
* segment with Ethernet offset alignment and room for some header expansion.
*/
#define ODP_CONFIG_PACKET_HEADROOM 66
/**
* Default packet tailroom
*
* This defines the minimum number of tailroom bytes that newly created packets
* have by default. The default apply to both ODP packet input and user
* allocated packets. Implementations are free to add to this as desired
* without restriction. Note that most implementations will automatically
* consider any unused portion of the last segment of a packet as tailroom
*/
#define ODP_CONFIG_PACKET_TAILROOM 0
/**
* Minimum packet segment length
*
* This defines the minimum packet segment length in bytes. The user defined
* buffer size (in odp_buffer_pool_param_t) in buffer pool creation will be
* rounded up into this value.
*
* @internal In linux-generic implementation:
* - The value MUST be a multiple of 8.
* - The value MUST be a multiple of ODP_CACHE_LINE_SIZE
* - The default value (1664) is large enough to support 1536-byte packets
* with the default headroom shown above and is a multiple of both 64 and 128,
* which are the most common cache line sizes.
*/
#define ODP_CONFIG_PACKET_BUF_LEN_MIN (1664)
/**
* Maximum packet buffer length
*
* This defines the maximum number of bytes that can be stored into a packet
* (maximum return value of odp_packet_buf_len()). Attempts to allocate
* (including default head- and tailrooms) or extend packets to sizes larger
* than this limit will fail.
*
* @internal In linux-generic implementation:
* - The value MUST be an integral number of segments
* - The value SHOULD be large enough to accommodate jumbo packets (9K)
*/
#define ODP_CONFIG_PACKET_BUF_LEN_MAX (ODP_CONFIG_PACKET_BUF_LEN_MIN*6)
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif
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