Signed-off-by: Jan Blunck <jblu...@infradead.org>
---
lib/librte_eal/bsdapp/eal/rte_eal_version.map | 2 +
lib/librte_eal/common/eal_common_dev.c | 68 +++++++++++++++++++++++++
lib/librte_eal/common/include/rte_dev.h | 28 ++++++++++
lib/librte_eal/linuxapp/eal/rte_eal_version.map | 2 +
4 files changed, 100 insertions(+)
diff --git a/lib/librte_eal/bsdapp/eal/rte_eal_version.map
b/lib/librte_eal/bsdapp/eal/rte_eal_version.map
index 21640d6..b7d26b2 100644
--- a/lib/librte_eal/bsdapp/eal/rte_eal_version.map
+++ b/lib/librte_eal/bsdapp/eal/rte_eal_version.map
@@ -166,6 +166,8 @@ DPDK_17.05 {
rte_bus_find_by_device;
rte_bus_find_device;
rte_cpu_is_supported;
+ rte_eal_hotplug_add;
+ rte_eal_hotplug_remove;
rte_log_dump;
rte_log_register;
rte_log_get_global_level;
diff --git a/lib/librte_eal/common/eal_common_dev.c
b/lib/librte_eal/common/eal_common_dev.c
index a400ddd..477b4cf 100644
--- a/lib/librte_eal/common/eal_common_dev.c
+++ b/lib/librte_eal/common/eal_common_dev.c
@@ -92,3 +92,71 @@ int rte_eal_dev_detach(const char *name)
RTE_LOG(ERR, EAL, "Driver cannot detach the device (%s)\n", name);
return -EINVAL;
}
+
+int rte_eal_hotplug_add(const char *busname, const char *devname,
+ const char *devargs)
+{
+ struct rte_bus *bus;
+ struct rte_device *dev;
+ int ret;
+
+ bus = rte_bus_find_by_name(busname);
+ if (!bus) {
+ RTE_LOG(ERR, EAL, "Cannot find bus (%s)\n", busname);
+ return -ENOENT;
+ }
+
+ if (!bus->plug) {
+ RTE_LOG(ERR, EAL, "Function plug not supported by bus (%s)\n",
+ bus->name);
+ return -ENOTSUP;
+ }
+
+ ret = bus->scan();
+ if (ret)
+ return ret;
+
+ dev = bus->find_device(NULL, cmp_detached_dev_name, devname);
+ if (!dev) {
+ RTE_LOG(ERR, EAL, "Cannot find unplugged device (%s)\n",
+ devname);
+ return -EINVAL;
+ }
+
+ ret = bus->plug(dev, devargs);
+ if (ret)
+ RTE_LOG(ERR, EAL, "Driver cannot attach the device (%s)\n",
+ dev->name);
+ return ret;
+}
+
+int rte_eal_hotplug_remove(const char *busname, const char *devname)
+{
+ struct rte_bus *bus;
+ struct rte_device *dev;
+ int ret;
+
+ bus = rte_bus_find_by_name(busname);
+ if (!bus) {
+ RTE_LOG(ERR, EAL, "Cannot find bus (%s)\n", busname);
+ return -ENOENT;
+ }
+
+ if (!bus->unplug) {
+ RTE_LOG(ERR, EAL, "Function unplug not supported by bus (%s)\n",
+ bus->name);
+ return -ENOTSUP;
+ }
+
+ dev = bus->find_device(NULL, cmp_dev_name, devname);
+ if (!dev) {
+ RTE_LOG(ERR, EAL, "Cannot find plugged device (%s)\n", devname);
+ return -EINVAL;
+ }
+
+ ret = bus->unplug(dev);
+ if (ret)
+ RTE_LOG(ERR, EAL, "Driver cannot detach the device (%s)\n",
+ dev->name);
+ return ret;
+}
diff --git a/lib/librte_eal/common/include/rte_dev.h
b/lib/librte_eal/common/include/rte_dev.h
index 04d9c28..95440eb 100644
--- a/lib/librte_eal/common/include/rte_dev.h
+++ b/lib/librte_eal/common/include/rte_dev.h
@@ -192,6 +192,34 @@ int rte_eal_dev_attach(const char *name, const char
*devargs);
int rte_eal_dev_detach(const char *name);
/**
+ * Hotplug add a given device to a specific bus.
+ *
+ * @param busname
+ * The bus name the device is added to.
+ * @param devname
+ * The device name. Based on this device name, eal will identify a driver
+ * capable of handling it and pass it to the driver probing function.
+ * @param devargs
+ * Device arguments to be passed to the driver.
+ * @return
+ * 0 on success, negative on error.
+ */
+int rte_eal_hotplug_add(const char *busname, const char *devname,
+ const char *devargs);
+
+/**
+ * Hotplug remove a given device from a specific bus.
+ *
+ * @param busname
+ * The bus name the device is removed from.
+ * @param devname
+ * The device name being removed.
+ * @return
+ * 0 on success, negative on error.
+ */
+int rte_eal_hotplug_remove(const char *busname, const char *devname);
+
+/**
* Device comparison function.
*
* This type of function is used to compare an rte_device with arbitrary
diff --git a/lib/librte_eal/linuxapp/eal/rte_eal_version.map
b/lib/librte_eal/linuxapp/eal/rte_eal_version.map
index e0a056d..a94cb7a 100644
--- a/lib/librte_eal/linuxapp/eal/rte_eal_version.map
+++ b/lib/librte_eal/linuxapp/eal/rte_eal_version.map
@@ -170,6 +170,8 @@ DPDK_17.05 {
rte_bus_find_by_device;
rte_bus_find_device;
rte_cpu_is_supported;
+ rte_eal_hotplug_add;
+ rte_eal_hotplug_remove;
rte_intr_free_epoll_fd;
rte_log_dump;
rte_log_get_global_level;
--
2.9.4
