dpdk0716 rc3

1 files changed, 176 insertions, 0 deletions

diff --git a/src/dpdk/lib/librte_eal/common/eal_common_devargs.c b/src/dpdk/lib/librte_eal/common/eal_common_devargs.c
new file mode 100644
index 00000000..e403717b
--- /dev/null
+++ b/src/dpdk/lib/librte_eal/common/eal_common_devargs.c
@@ -0,0 +1,176 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright 2014 6WIND S.A.
+ *
+ *   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 6WIND S.A 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.
+ */
+
+/* This file manages the list of devices and their arguments, as given
+ * by the user at startup
+ *
+ * Code here should not call rte_log since the EAL environment
+ * may not be initialized.
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <rte_pci.h>
+#include <rte_devargs.h>
+#include "eal_private.h"
+
+/** Global list of user devices */
+struct rte_devargs_list devargs_list =
+	TAILQ_HEAD_INITIALIZER(devargs_list);
+
+int
+rte_eal_parse_devargs_str(const char *devargs_str,
+			char **drvname, char **drvargs)
+{
+	char *sep;
+
+	if ((devargs_str) == NULL || (drvname) == NULL || (drvargs == NULL))
+		return -1;
+
+	*drvname = strdup(devargs_str);
+	if (*drvname == NULL)
+		return -1;
+
+	/* set the first ',' to '\0' to split name and arguments */
+	sep = strchr(*drvname, ',');
+	if (sep != NULL) {
+		sep[0] = '\0';
+		*drvargs = strdup(sep + 1);
+	} else {
+		*drvargs = strdup("");
+	}
+
+	if (*drvargs == NULL) {
+		free(*drvname);
+		return -1;
+	}
+	return 0;
+}
+
+/* store a whitelist parameter for later parsing */
+int
+rte_eal_devargs_add(enum rte_devtype devtype, const char *devargs_str)
+{
+	struct rte_devargs *devargs = NULL;
+	char *buf = NULL;
+	int ret;
+
+	/* use malloc instead of rte_malloc as it's called early at init */
+	devargs = malloc(sizeof(*devargs));
+	if (devargs == NULL)
+		goto fail;
+
+	memset(devargs, 0, sizeof(*devargs));
+	devargs->type = devtype;
+
+	if (rte_eal_parse_devargs_str(devargs_str, &buf, &devargs->args))
+		goto fail;
+
+	switch (devargs->type) {
+	case RTE_DEVTYPE_WHITELISTED_PCI:
+	case RTE_DEVTYPE_BLACKLISTED_PCI:
+		/* try to parse pci identifier */
+		if (eal_parse_pci_BDF(buf, &devargs->pci.addr) != 0 &&
+		    eal_parse_pci_DomBDF(buf, &devargs->pci.addr) != 0)
+			goto fail;
+
+		break;
+	case RTE_DEVTYPE_VIRTUAL:
+		/* save driver name */
+		ret = snprintf(devargs->virt.drv_name,
+			       sizeof(devargs->virt.drv_name), "%s", buf);
+		if (ret < 0 || ret >= (int)sizeof(devargs->virt.drv_name))
+			goto fail;
+
+		break;
+	}
+
+	free(buf);
+	TAILQ_INSERT_TAIL(&devargs_list, devargs, next);
+	return 0;
+
+fail:
+	free(buf);
+	if (devargs) {
+		free(devargs->args);
+		free(devargs);
+	}
+
+	return -1;
+}
+
+/* count the number of devices of a specified type */
+unsigned int
+rte_eal_devargs_type_count(enum rte_devtype devtype)
+{
+	struct rte_devargs *devargs;
+	unsigned int count = 0;
+
+	TAILQ_FOREACH(devargs, &devargs_list, next) {
+		if (devargs->type != devtype)
+			continue;
+		count++;
+	}
+	return count;
+}
+
+/* dump the user devices on the console */
+void
+rte_eal_devargs_dump(FILE *f)
+{
+	struct rte_devargs *devargs;
+
+	fprintf(f, "User device white list:\n");
+	TAILQ_FOREACH(devargs, &devargs_list, next) {
+		if (devargs->type == RTE_DEVTYPE_WHITELISTED_PCI)
+			fprintf(f, "  PCI whitelist " PCI_PRI_FMT " %s\n",
+			       devargs->pci.addr.domain,
+			       devargs->pci.addr.bus,
+			       devargs->pci.addr.devid,
+			       devargs->pci.addr.function,
+			       devargs->args);
+		else if (devargs->type == RTE_DEVTYPE_BLACKLISTED_PCI)
+			fprintf(f, "  PCI blacklist " PCI_PRI_FMT " %s\n",
+			       devargs->pci.addr.domain,
+			       devargs->pci.addr.bus,
+			       devargs->pci.addr.devid,
+			       devargs->pci.addr.function,
+			       devargs->args);
+		else if (devargs->type == RTE_DEVTYPE_VIRTUAL)
+			fprintf(f, "  VIRTUAL %s %s\n",
+			       devargs->virt.drv_name,
+			       devargs->args);
+		else
+			fprintf(f, "  UNKNOWN %s\n", devargs->args);
+	}
+}