bus: add helper to find bus by name

Signed-off-by: Jan Blunck <jblunck@infradead.org>

diff --git a/lib/librte_eal/bsdapp/eal/rte_eal_version.map b/lib/librte_eal/bsdapp/eal/rte_eal_version.map
index 458e3a6..d138a96 100644 (file)
--- a/lib/librte_eal/bsdapp/eal/rte_eal_version.map
+++ b/lib/librte_eal/bsdapp/eal/rte_eal_version.map
@@ -199,5 +199,6 @@ DPDK_17.08 {
 
        rte_bus_find;
        rte_bus_find_by_device;
+       rte_bus_find_by_name;
 
 } DPDK_17.05;

diff --git a/lib/librte_eal/common/eal_common_bus.c b/lib/librte_eal/common/eal_common_bus.c
index b8a9e30..bf2b138 100644 (file)
--- a/lib/librte_eal/common/eal_common_bus.c
+++ b/lib/librte_eal/common/eal_common_bus.c
@@ -188,3 +188,17 @@ rte_bus_find_by_device(const struct rte_device *dev)
 {
        return rte_bus_find(NULL, bus_find_device, (const void *)dev);
 }
+
+static int
+cmp_bus_name(const struct rte_bus *bus, const void *_name)
+{
+       const char *name = _name;
+
+       return strcmp(bus->name, name);
+}
+
+struct rte_bus *
+rte_bus_find_by_name(const char *busname)
+{
+       return rte_bus_find(NULL, cmp_bus_name, (const void *)busname);
+}

diff --git a/lib/librte_eal/common/include/rte_bus.h b/lib/librte_eal/common/include/rte_bus.h
index f8b3215..509292d 100644 (file)
--- a/lib/librte_eal/common/include/rte_bus.h
+++ b/lib/librte_eal/common/include/rte_bus.h
@@ -214,6 +214,11 @@ struct rte_bus *rte_bus_find(const struct rte_bus *start, rte_bus_cmp_t cmp,
  */
 struct rte_bus *rte_bus_find_by_device(const struct rte_device *dev);
 
+/**
+ * Find the registered bus for a given name.
+ */
+struct rte_bus *rte_bus_find_by_name(const char *busname);
+
 /**
  * Helper for Bus registration.
  * The constructor has higher priority than PMD constructors.

diff --git a/lib/librte_eal/linuxapp/eal/rte_eal_version.map b/lib/librte_eal/linuxapp/eal/rte_eal_version.map
index 3c193e4..643ec1c 100644 (file)
--- a/lib/librte_eal/linuxapp/eal/rte_eal_version.map
+++ b/lib/librte_eal/linuxapp/eal/rte_eal_version.map
@@ -204,5 +204,6 @@ DPDK_17.08 {
 
        rte_bus_find;
        rte_bus_find_by_device;
+       rte_bus_find_by_name;
 
 } DPDK_17.05;