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From: Neil Horman <nhorman@tuxdriver.com>
To: dev@dpdk.org
Date: Tue, 15 Apr 2014 14:05:57 -0400
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Subject: [dpdk-dev] [PATCH 03/15] pmd: Add PMD_REGISTER_DRIVER macro
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Rather than have each driver have to remember to add a constructor to it to make
sure its gets registered properly, wrap that process up in a macro to make
registration a one line affair.  This also sets the stage for us to make
registration of vdev pmds and physical pmds a uniform process

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
---
 lib/librte_eal/common/Makefile          |  2 +-
 lib/librte_eal/common/include/rte_pmd.h | 69 +++++++++++++++++++++++++++++++++
 2 files changed, 70 insertions(+), 1 deletion(-)
 create mode 100644 lib/librte_eal/common/include/rte_pmd.h

diff --git a/lib/librte_eal/common/Makefile b/lib/librte_eal/common/Makefile
index 2f99bf4..b918a73 100644
--- a/lib/librte_eal/common/Makefile
+++ b/lib/librte_eal/common/Makefile
@@ -37,7 +37,7 @@ INC += rte_log.h rte_memcpy.h rte_memory.h rte_memzone.h rte_pci.h
 INC += rte_pci_dev_ids.h rte_per_lcore.h rte_prefetch.h rte_random.h
 INC += rte_rwlock.h rte_spinlock.h rte_tailq.h rte_interrupts.h rte_alarm.h
 INC += rte_string_fns.h rte_cpuflags.h rte_version.h rte_tailq_elem.h
-INC += rte_eal_memconfig.h rte_malloc_heap.h
+INC += rte_eal_memconfig.h rte_malloc_heap.h rte_pmd.h
 INC += rte_hexdump.h rte_devargs.h rte_vdev.h
 
 ifeq ($(CONFIG_RTE_INSECURE_FUNCTION_WARNING),y)
diff --git a/lib/librte_eal/common/include/rte_pmd.h b/lib/librte_eal/common/include/rte_pmd.h
new file mode 100644
index 0000000..b37fa28
--- /dev/null
+++ b/lib/librte_eal/common/include/rte_pmd.h
@@ -0,0 +1,69 @@
+/*-
+ *   BSD LICENSE
+ * 
+ *   Copyright(c) 2010-2014 Neil Horman <nhorman@tuxdriver.com. 
+ *   All rights reserved.
+ * 
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ * 
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * Neither the name of Intel Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ * 
+ *   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.
+ */
+
+/**
+ * @file
+ *
+ * API for error cause tracking
+ */
+
+#ifndef _RTE_PMD_H_
+#define _RTE_PMD_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+enum rte_pmd_driver_type {
+	PMD_VDEV = 1
+};
+
+extern void rte_eal_nonpci_dev_init_register(const char *name, int (*dev_initfn)(const char *, const char *));
+#define PMD_REGISTER_DRIVER(d, t)\
+void devinitfn_ ##d(void);\
+void __attribute__((constructor, used)) devinitfn_ ##d(void)\
+{\
+	enum rte_pmd_driver_type _t = (t);\
+	switch(_t)\
+	{\
+		case PMD_VDEV:\
+			rte_eal_vdev_driver_register(&d);\
+			break;\
+	};\
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_PMD_H_ */
-- 
1.8.3.1