--- /dev/null
+/*-
+ * 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);
+ }
+}
Code Review / deb_dpdk.git / blobdiff