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