37e97ad2c5
This adds a new API to check for the eal cpu versions. It's now possible to gracefully exit the application, or for applications which support non-dpdk datapaths working in concert with DPDK datapaths, there no longer is the possibility of exiting for unsupported CPUs. Signed-off-by: Aaron Conole <aconole@redhat.com> Acked-by: Bruce Richardson <bruce.richardson@intel.com>
80 lines
2.6 KiB
C
80 lines
2.6 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include <rte_common.h>
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#include <rte_cpuflags.h>
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/**
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* Checks if the machine is adequate for running the binary. If it is not, the
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* program exits with status 1.
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*/
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void
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rte_cpu_check_supported(void)
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{
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if (!rte_cpu_is_supported())
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exit(1);
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}
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int
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rte_cpu_is_supported(void)
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{
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/* This is generated at compile-time by the build system */
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static const enum rte_cpu_flag_t compile_time_flags[] = {
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RTE_COMPILE_TIME_CPUFLAGS
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};
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unsigned count = RTE_DIM(compile_time_flags), i;
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int ret;
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for (i = 0; i < count; i++) {
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ret = rte_cpu_get_flag_enabled(compile_time_flags[i]);
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if (ret < 0) {
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fprintf(stderr,
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"ERROR: CPU feature flag lookup failed with error %d\n",
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ret);
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return 0;
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}
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if (!ret) {
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fprintf(stderr,
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"ERROR: This system does not support \"%s\".\n"
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"Please check that RTE_MACHINE is set correctly.\n",
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rte_cpu_get_flag_name(compile_time_flags[i]));
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return 0;
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}
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}
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return 1;
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}
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