[dpdk-dev,v2,7/9] bus: add helper to find a bus from a device name
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Commit Message
Find which bus should be able to parse this device name into an internal
device representation.
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_bus.c | 15 +++++++++++++++
lib/librte_eal/common/include/rte_bus.h | 12 ++++++++++++
lib/librte_eal/linuxapp/eal/rte_eal_version.map | 1 +
4 files changed, 29 insertions(+)
@@ -202,5 +202,6 @@ DPDK_17.08 {
global:
rte_bus_from_name;
+ rte_bus_from_dev;
} DPDK_17.05;
@@ -242,3 +242,18 @@ rte_bus_from_name(const char *str)
return NULL;
return rte_bus_find(bus_cmp_name, str);
}
+
+static int
+bus_can_parse(const struct rte_bus *bus, const void *_name)
+{
+ const char *name = _name;
+
+ return (bus->parse && !bus->parse(name, NULL));
+}
+
+/* find a bus capable of parsing a device description */
+struct rte_bus *
+rte_bus_from_dev(const char *str)
+{
+ return rte_bus_find(bus_can_parse, str);
+}
@@ -251,6 +251,18 @@ struct rte_bus *rte_bus_find_by_device(const struct rte_device *dev);
struct rte_bus *rte_bus_from_name(const char *str);
/**
+ * Find a bus capable of identifying a device.
+ *
+ * @param str
+ * A device identifier (PCI address, virtual PMD name, ...).
+ *
+ * @return
+ * A valid bus structure if found.
+ * NULL if no bus is able to parse this device.
+ */
+struct rte_bus *rte_bus_from_dev(const char *str);
+
+/**
* Helper for Bus registration.
* The constructor has higher priority than PMD constructors.
*/
@@ -206,5 +206,6 @@ DPDK_17.08 {
global:
rte_bus_from_name;
+ rte_bus_from_dev;
} DPDK_17.05;