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33 /* This file manages the list of devices and their arguments, as given
34 * by the user at startup
36 * Code here should not call rte_log since the EAL environment
37 * may not be initialized.
43 #include <rte_devargs.h>
44 #include <rte_tailq.h>
45 #include "eal_private.h"
47 /** Global list of user devices */
48 struct rte_devargs_list devargs_list =
49 TAILQ_HEAD_INITIALIZER(devargs_list);
52 rte_eal_parse_devargs_str(const char *devargs_str,
53 char **drvname, char **drvargs)
57 if ((devargs_str) == NULL || (drvname) == NULL || (drvargs == NULL))
60 *drvname = strdup(devargs_str);
64 /* set the first ',' to '\0' to split name and arguments */
65 sep = strchr(*drvname, ',');
68 *drvargs = strdup(sep + 1);
70 *drvargs = strdup("");
73 if (*drvargs == NULL) {
82 bus_name_cmp(const struct rte_bus *bus, const void *name)
84 return strncmp(bus->name, name, strlen(bus->name));
88 rte_eal_devargs_parse(const char *dev, struct rte_devargs *da)
90 struct rte_bus *bus = NULL;
92 const size_t maxlen = sizeof(da->name);
95 if (dev == NULL || da == NULL)
97 /* Retrieve eventual bus info */
100 bus = rte_bus_find(bus, bus_name_cmp, dev);
103 devname = dev + strlen(bus->name) + 1;
104 if (rte_bus_find_by_device_name(devname) == bus)
107 /* Store device name */
109 while (devname[i] != '\0' && devname[i] != ',') {
110 da->name[i] = devname[i];
113 fprintf(stderr, "WARNING: Parsing \"%s\": device name should be shorter than %zu\n",
115 da->name[i - 1] = '\0';
121 bus = rte_bus_find_by_device_name(da->name);
123 fprintf(stderr, "ERROR: failed to parse device \"%s\"\n",
129 /* Parse eventual device arguments */
130 if (devname[i] == ',')
131 da->args = strdup(&devname[i + 1]);
133 da->args = strdup("");
134 if (da->args == NULL) {
135 fprintf(stderr, "ERROR: not enough memory to parse arguments\n");
141 /* store a whitelist parameter for later parsing */
143 rte_eal_devargs_add(enum rte_devtype devtype, const char *devargs_str)
145 struct rte_devargs *devargs = NULL;
146 struct rte_bus *bus = NULL;
147 const char *dev = devargs_str;
149 /* use calloc instead of rte_zmalloc as it's called early at init */
150 devargs = calloc(1, sizeof(*devargs));
154 if (rte_eal_devargs_parse(dev, devargs))
156 devargs->type = devtype;
158 if (devargs->type == RTE_DEVTYPE_WHITELISTED) {
159 if (bus->conf.scan_mode == RTE_BUS_SCAN_UNDEFINED) {
160 bus->conf.scan_mode = RTE_BUS_SCAN_WHITELIST;
161 } else if (bus->conf.scan_mode == RTE_BUS_SCAN_BLACKLIST) {
162 fprintf(stderr, "ERROR: incompatible device type and bus scan mode\n");
165 } else if (devargs->type == RTE_DEVTYPE_BLACKLISTED) {
166 if (bus->conf.scan_mode == RTE_BUS_SCAN_UNDEFINED) {
167 bus->conf.scan_mode = RTE_BUS_SCAN_BLACKLIST;
168 } else if (bus->conf.scan_mode == RTE_BUS_SCAN_WHITELIST) {
169 fprintf(stderr, "ERROR: incompatible device type and bus scan mode\n");
174 TAILQ_INSERT_TAIL(&devargs_list, devargs, next);
187 rte_eal_devargs_remove(const char *busname, const char *devname)
189 struct rte_devargs *d;
192 TAILQ_FOREACH_SAFE(d, &devargs_list, next, tmp) {
193 if (strcmp(d->bus->name, busname) == 0 &&
194 strcmp(d->name, devname) == 0) {
195 TAILQ_REMOVE(&devargs_list, d, next);
204 /* count the number of devices of a specified type */
206 rte_eal_devargs_type_count(enum rte_devtype devtype)
208 struct rte_devargs *devargs;
209 unsigned int count = 0;
211 TAILQ_FOREACH(devargs, &devargs_list, next) {
212 if (devargs->type != devtype)
219 /* dump the user devices on the console */
221 rte_eal_devargs_dump(FILE *f)
223 struct rte_devargs *devargs;
225 fprintf(f, "User device list:\n");
226 TAILQ_FOREACH(devargs, &devargs_list, next) {
227 fprintf(f, " [%s]: %s %s\n",
228 (devargs->bus ? devargs->bus->name : "??"),
229 devargs->name, devargs->args);