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/*-
* 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);
}
}
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