diff options
Diffstat (limited to 'src/dpdk_lib18/librte_eal/common/eal_common_devargs.c')
| -rwxr-xr-x | src/dpdk_lib18/librte_eal/common/eal_common_devargs.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/src/dpdk_lib18/librte_eal/common/eal_common_devargs.c b/src/dpdk_lib18/librte_eal/common/eal_common_devargs.c new file mode 100755 index 00000000..4c7d11af --- /dev/null +++ b/src/dpdk_lib18/librte_eal/common/eal_common_devargs.c @@ -0,0 +1,152 @@ +/*- + * 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 */ + +#include <string.h> + +#include <rte_log.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); + +/* store a whitelist parameter for later parsing */ +int +rte_eal_devargs_add(enum rte_devtype devtype, const char *devargs_str) +{ + struct rte_devargs *devargs; + char buf[RTE_DEVARGS_LEN]; + char *sep; + int ret; + + ret = snprintf(buf, sizeof(buf), "%s", devargs_str); + if (ret < 0 || ret >= (int)sizeof(buf)) { + RTE_LOG(ERR, EAL, "user device args too large: <%s>\n", + devargs_str); + return -1; + } + + /* use malloc instead of rte_malloc as it's called early at init */ + devargs = malloc(sizeof(*devargs)); + if (devargs == NULL) { + RTE_LOG(ERR, EAL, "cannot allocate devargs\n"); + return -1; + } + memset(devargs, 0, sizeof(*devargs)); + devargs->type = devtype; + + /* set the first ',' to '\0' to split name and arguments */ + sep = strchr(buf, ','); + if (sep != NULL) { + sep[0] = '\0'; + snprintf(devargs->args, sizeof(devargs->args), "%s", sep + 1); + } + + 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) { + RTE_LOG(ERR, EAL, + "invalid PCI identifier <%s>\n", buf); + free(devargs); + return -1; + } + break; + case RTE_DEVTYPE_VIRTUAL: + /* save driver name */ + ret = snprintf(devargs->virtual.drv_name, + sizeof(devargs->virtual.drv_name), "%s", buf); + if (ret < 0 || ret >= (int)sizeof(devargs->virtual.drv_name)) { + RTE_LOG(ERR, EAL, + "driver name too large: <%s>\n", buf); + free(devargs); + return -1; + } + break; + } + + TAILQ_INSERT_TAIL(&devargs_list, devargs, next); + return 0; +} + +/* 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->virtual.drv_name, + devargs->args); + else + fprintf(f, " UNKNOWN %s\n", devargs->args); + } +} |