diff options
author | Christian Ehrhardt <christian.ehrhardt@canonical.com> | 2018-06-01 09:09:08 +0200 |
---|---|---|
committer | Christian Ehrhardt <christian.ehrhardt@canonical.com> | 2018-06-01 09:12:07 +0200 |
commit | 1bd9b61222f3a81ffe770fc00b70ded6e760c42b (patch) | |
tree | 0bf7d996cf0664796687c1be6d22958fcf6a8096 /lib/librte_eal/common/eal_common_devargs.c | |
parent | bb4e158029645f37809fcf81a3acddd6fa11f88a (diff) |
New upstream version 18.05
Change-Id: Icd4170ddc4f63aeae5d0559490e5195b5349f9c2
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Diffstat (limited to 'lib/librte_eal/common/eal_common_devargs.c')
-rw-r--r-- | lib/librte_eal/common/eal_common_devargs.c | 53 |
1 files changed, 44 insertions, 9 deletions
diff --git a/lib/librte_eal/common/eal_common_devargs.c b/lib/librte_eal/common/eal_common_devargs.c index 810b3e18..b0434158 100644 --- a/lib/librte_eal/common/eal_common_devargs.c +++ b/lib/librte_eal/common/eal_common_devargs.c @@ -11,6 +11,7 @@ #include <stdio.h> #include <string.h> +#include <stdarg.h> #include <rte_compat.h> #include <rte_dev.h> @@ -18,6 +19,9 @@ #include <rte_tailq.h> #include "eal_private.h" +/** user device double-linked queue type definition */ +TAILQ_HEAD(rte_devargs_list, rte_devargs); + /** Global list of user devices */ struct rte_devargs_list devargs_list = TAILQ_HEAD_INITIALIZER(devargs_list); @@ -59,15 +63,23 @@ bus_name_cmp(const struct rte_bus *bus, const void *name) } int __rte_experimental -rte_eal_devargs_parse(const char *dev, struct rte_devargs *da) +rte_devargs_parse(struct rte_devargs *da, const char *format, ...) { struct rte_bus *bus = NULL; + va_list ap; + va_start(ap, format); + char dev[vsnprintf(NULL, 0, format, ap) + 1]; const char *devname; const size_t maxlen = sizeof(da->name); size_t i; - if (dev == NULL || da == NULL) + va_end(ap); + if (da == NULL) return -EINVAL; + + va_start(ap, format); + vsnprintf(dev, sizeof(dev), format, ap); + va_end(ap); /* Retrieve eventual bus info */ do { devname = dev; @@ -113,11 +125,11 @@ rte_eal_devargs_parse(const char *dev, struct rte_devargs *da) } int __rte_experimental -rte_eal_devargs_insert(struct rte_devargs *da) +rte_devargs_insert(struct rte_devargs *da) { int ret; - ret = rte_eal_devargs_remove(da->bus->name, da->name); + ret = rte_devargs_remove(da->bus->name, da->name); if (ret < 0) return ret; TAILQ_INSERT_TAIL(&devargs_list, da, next); @@ -125,8 +137,9 @@ rte_eal_devargs_insert(struct rte_devargs *da) } /* store a whitelist parameter for later parsing */ +__rte_experimental int -rte_eal_devargs_add(enum rte_devtype devtype, const char *devargs_str) +rte_devargs_add(enum rte_devtype devtype, const char *devargs_str) { struct rte_devargs *devargs = NULL; struct rte_bus *bus = NULL; @@ -137,7 +150,7 @@ rte_eal_devargs_add(enum rte_devtype devtype, const char *devargs_str) if (devargs == NULL) goto fail; - if (rte_eal_devargs_parse(dev, devargs)) + if (rte_devargs_parse(devargs, "%s", dev)) goto fail; devargs->type = devtype; bus = devargs->bus; @@ -162,7 +175,7 @@ fail: } int __rte_experimental -rte_eal_devargs_remove(const char *busname, const char *devname) +rte_devargs_remove(const char *busname, const char *devname) { struct rte_devargs *d; void *tmp; @@ -180,8 +193,9 @@ rte_eal_devargs_remove(const char *busname, const char *devname) } /* count the number of devices of a specified type */ +__rte_experimental unsigned int -rte_eal_devargs_type_count(enum rte_devtype devtype) +rte_devargs_type_count(enum rte_devtype devtype) { struct rte_devargs *devargs; unsigned int count = 0; @@ -195,8 +209,9 @@ rte_eal_devargs_type_count(enum rte_devtype devtype) } /* dump the user devices on the console */ +__rte_experimental void -rte_eal_devargs_dump(FILE *f) +rte_devargs_dump(FILE *f) { struct rte_devargs *devargs; @@ -207,3 +222,23 @@ rte_eal_devargs_dump(FILE *f) devargs->name, devargs->args); } } + +/* bus-aware rte_devargs iterator. */ +__rte_experimental +struct rte_devargs * +rte_devargs_next(const char *busname, const struct rte_devargs *start) +{ + struct rte_devargs *da; + + if (start != NULL) + da = TAILQ_NEXT(start, next); + else + da = TAILQ_FIRST(&devargs_list); + while (da != NULL) { + if (busname == NULL || + (strcmp(busname, da->bus->name) == 0)) + return da; + da = TAILQ_NEXT(da, next); + } + return NULL; +} |