123 lines
4.1 KiB
C
123 lines
4.1 KiB
C
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/*
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* Copyright 2010 Tilera Corporation. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation, version 2.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for
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* more details.
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*/
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/**
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* Error codes returned from NetIO routines.
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*/
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#ifndef __NETIO_ERRORS_H__
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#define __NETIO_ERRORS_H__
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/**
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* @addtogroup error
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*
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* @brief The error codes returned by NetIO functions.
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*
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* NetIO functions return 0 (defined as ::NETIO_NO_ERROR) on success, and
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* a negative value if an error occurs.
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*
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* In cases where a NetIO function failed due to a error reported by
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* system libraries, the error code will be the negation of the
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* system errno at the time of failure. The @ref netio_strerror()
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* function will deliver error strings for both NetIO and system error
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* codes.
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*
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* @{
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*/
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/** The set of all NetIO errors. */
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typedef enum
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{
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/** Operation successfully completed. */
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NETIO_NO_ERROR = 0,
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/** A packet was successfully retrieved from an input queue. */
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NETIO_PKT = 0,
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/** Largest NetIO error number. */
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NETIO_ERR_MAX = -701,
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/** The tile is not registered with the IPP. */
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NETIO_NOT_REGISTERED = -701,
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/** No packet was available to retrieve from the input queue. */
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NETIO_NOPKT = -702,
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/** The requested function is not implemented. */
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NETIO_NOT_IMPLEMENTED = -703,
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/** On a registration operation, the target queue already has the maximum
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* number of tiles registered for it, and no more may be added. On a
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* packet send operation, the output queue is full and nothing more can
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* be queued until some of the queued packets are actually transmitted. */
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NETIO_QUEUE_FULL = -704,
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/** The calling process or thread is not bound to exactly one CPU. */
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NETIO_BAD_AFFINITY = -705,
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/** Cannot allocate memory on requested controllers. */
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NETIO_CANNOT_HOME = -706,
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/** On a registration operation, the IPP specified is not configured
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* to support the options requested; for instance, the application
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* wants a specific type of tagged headers which the configured IPP
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* doesn't support. Or, the supplied configuration information is
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* not self-consistent, or is out of range; for instance, specifying
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* both NETIO_RECV and NETIO_NO_RECV, or asking for more than
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* NETIO_MAX_SEND_BUFFERS to be preallocated. On a VLAN or bucket
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* configure operation, the number of items, or the base item, was
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* out of range.
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*/
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NETIO_BAD_CONFIG = -707,
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/** Too many tiles have registered to transmit packets. */
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NETIO_TOOMANY_XMIT = -708,
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/** Packet transmission was attempted on a queue which was registered
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with transmit disabled. */
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NETIO_UNREG_XMIT = -709,
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/** This tile is already registered with the IPP. */
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NETIO_ALREADY_REGISTERED = -710,
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/** The Ethernet link is down. The application should try again later. */
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NETIO_LINK_DOWN = -711,
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/** An invalid memory buffer has been specified. This may be an unmapped
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* virtual address, or one which does not meet alignment requirements.
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* For netio_input_register(), this error may be returned when multiple
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* processes specify different memory regions to be used for NetIO
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* buffers. That can happen if these processes specify explicit memory
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* regions with the ::NETIO_FIXED_BUFFER_VA flag, or if tmc_cmem_init()
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* has not been called by a common ancestor of the processes.
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*/
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NETIO_FAULT = -712,
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/** Cannot combine user-managed shared memory and cache coherence. */
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NETIO_BAD_CACHE_CONFIG = -713,
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/** Smallest NetIO error number. */
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NETIO_ERR_MIN = -713,
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#ifndef __DOXYGEN__
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/** Used internally to mean that no response is needed; never returned to
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* an application. */
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NETIO_NO_RESPONSE = 1
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#endif
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} netio_error_t;
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/** @} */
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#endif /* __NETIO_ERRORS_H__ */
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