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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_compat.h>
45 #include <rte_devargs.h>
46 #include <rte_tailq.h>
47 #include "eal_private.h"
49 /** Global list of user devices */
50 struct rte_devargs_list devargs_list =
51 TAILQ_HEAD_INITIALIZER(devargs_list);
54 rte_eal_parse_devargs_str(const char *devargs_str,
55 char **drvname, char **drvargs)
59 if ((devargs_str) == NULL || (drvname) == NULL || (drvargs == NULL))
62 *drvname = strdup(devargs_str);
66 /* set the first ',' to '\0' to split name and arguments */
67 sep = strchr(*drvname, ',');
70 *drvargs = strdup(sep + 1);
72 *drvargs = strdup("");
75 if (*drvargs == NULL) {
84 bus_name_cmp(const struct rte_bus *bus, const void *name)
86 return strncmp(bus->name, name, strlen(bus->name));
89 int __rte_experimental
90 rte_eal_devargs_parse(const char *dev, struct rte_devargs *da)
92 struct rte_bus *bus = NULL;
94 const size_t maxlen = sizeof(da->name);
97 if (dev == NULL || da == NULL)
99 /* Retrieve eventual bus info */
102 bus = rte_bus_find(bus, bus_name_cmp, dev);
105 devname = dev + strlen(bus->name) + 1;
106 if (rte_bus_find_by_device_name(devname) == bus)
109 /* Store device name */
111 while (devname[i] != '\0' && devname[i] != ',') {
112 da->name[i] = devname[i];
115 fprintf(stderr, "WARNING: Parsing \"%s\": device name should be shorter than %zu\n",
117 da->name[i - 1] = '\0';
123 bus = rte_bus_find_by_device_name(da->name);
125 fprintf(stderr, "ERROR: failed to parse device \"%s\"\n",
131 /* Parse eventual device arguments */
132 if (devname[i] == ',')
133 da->args = strdup(&devname[i + 1]);
135 da->args = strdup("");
136 if (da->args == NULL) {
137 fprintf(stderr, "ERROR: not enough memory to parse arguments\n");
143 int __rte_experimental
144 rte_eal_devargs_insert(struct rte_devargs *da)
148 ret = rte_eal_devargs_remove(da->bus->name, da->name);
151 TAILQ_INSERT_TAIL(&devargs_list, da, next);
155 /* store a whitelist parameter for later parsing */
157 rte_eal_devargs_add(enum rte_devtype devtype, const char *devargs_str)
159 struct rte_devargs *devargs = NULL;
160 struct rte_bus *bus = NULL;
161 const char *dev = devargs_str;
163 /* use calloc instead of rte_zmalloc as it's called early at init */
164 devargs = calloc(1, sizeof(*devargs));
168 if (rte_eal_devargs_parse(dev, devargs))
170 devargs->type = devtype;
172 if (devargs->type == RTE_DEVTYPE_BLACKLISTED_PCI)
173 devargs->policy = RTE_DEV_BLACKLISTED;
174 if (bus->conf.scan_mode == RTE_BUS_SCAN_UNDEFINED) {
175 if (devargs->policy == RTE_DEV_WHITELISTED)
176 bus->conf.scan_mode = RTE_BUS_SCAN_WHITELIST;
177 else if (devargs->policy == RTE_DEV_BLACKLISTED)
178 bus->conf.scan_mode = RTE_BUS_SCAN_BLACKLIST;
180 TAILQ_INSERT_TAIL(&devargs_list, devargs, next);
192 int __rte_experimental
193 rte_eal_devargs_remove(const char *busname, const char *devname)
195 struct rte_devargs *d;
198 TAILQ_FOREACH_SAFE(d, &devargs_list, next, tmp) {
199 if (strcmp(d->bus->name, busname) == 0 &&
200 strcmp(d->name, devname) == 0) {
201 TAILQ_REMOVE(&devargs_list, d, next);
210 /* count the number of devices of a specified type */
212 rte_eal_devargs_type_count(enum rte_devtype devtype)
214 struct rte_devargs *devargs;
215 unsigned int count = 0;
217 TAILQ_FOREACH(devargs, &devargs_list, next) {
218 if (devargs->type != devtype)
225 /* dump the user devices on the console */
227 rte_eal_devargs_dump(FILE *f)
229 struct rte_devargs *devargs;
231 fprintf(f, "User device list:\n");
232 TAILQ_FOREACH(devargs, &devargs_list, next) {
233 fprintf(f, " [%s]: %s %s\n",
234 (devargs->bus ? devargs->bus->name : "??"),
235 devargs->name, devargs->args);