[dpdk-dev,v6,03/22] devargs: introduce removal function
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Commit Message
Hotplug support introduces the possibility of removing devices from the
system. Allocated resources must be freed.
Signed-off-by: Gaetan Rivet <gaetan.rivet@6wind.com>
---
lib/librte_eal/bsdapp/eal/rte_eal_version.map | 1 +
lib/librte_eal/common/eal_common_devargs.c | 18 ++++++++++++++++++
lib/librte_eal/common/include/rte_devargs.h | 18 ++++++++++++++++++
lib/librte_eal/linuxapp/eal/rte_eal_version.map | 1 +
4 files changed, 38 insertions(+)
@@ -207,6 +207,7 @@ EXPERIMENTAL {
global:
rte_eal_devargs_parse;
+ rte_eal_devargs_rmv;
rte_eal_hotplug_add;
rte_eal_hotplug_remove;
@@ -41,6 +41,7 @@
#include <string.h>
#include <rte_devargs.h>
+#include <rte_tailq.h>
#include "eal_private.h"
/** Global list of user devices */
@@ -185,6 +186,23 @@ rte_eal_devargs_add(enum rte_devtype devtype, const char *devargs_str)
return -1;
}
+int
+rte_eal_devargs_rmv(const char *busname, const char *devname)
+{
+ struct rte_devargs *d;
+ void *tmp;
+
+ TAILQ_FOREACH_SAFE(d, &devargs_list, next, tmp) {
+ if (strcmp(d->bus->name, busname) == 0 &&
+ strcmp(d->name, devname) == 0) {
+ TAILQ_REMOVE(&devargs_list, d, next);
+ free(d->args);
+ free(d);
+ }
+ }
+ return 1;
+}
+
/* count the number of devices of a specified type */
unsigned int
rte_eal_devargs_type_count(enum rte_devtype devtype)
@@ -163,6 +163,24 @@ rte_eal_devargs_parse(const char *dev,
int rte_eal_devargs_add(enum rte_devtype devtype, const char *devargs_str);
/**
+ * Remove a device from the user device list.
+ * Its resources are freed.
+ * If the devargs cannot be found, nothing happens.
+ *
+ * @param busname
+ * bus name of the devargs to remove.
+ *
+ * @param devname
+ * device name of the devargs to remove.
+ *
+ * @return
+ * 0 on success.
+ * <0 on error.
+ * >0 if the devargs was not within the user device list.
+ */
+int rte_eal_devargs_rmv(const char *busname, const char *devname);
+
+/**
* Count the number of user devices of a specified type
*
* @param devtype
@@ -212,6 +212,7 @@ EXPERIMENTAL {
global:
rte_eal_devargs_parse;
+ rte_eal_devargs_rmv;
rte_eal_hotplug_add;
rte_eal_hotplug_remove;