[dpdk-dev] [PATCH 9/9] ethdev: Use embedded rte_device to detach driver
Gaetan Rivet
gaetan.rivet at 6wind.com
Wed May 24 17:05:01 CEST 2017
From: Jan Blunck <jblunck at infradead.org>
Signed-off-by: Jan Blunck <jblunck at infradead.org>
---
lib/librte_eal/bsdapp/eal/rte_eal_version.map | 1 +
lib/librte_eal/common/eal_common_dev.c | 43 ++++++++++++++++-----------
lib/librte_eal/common/include/rte_dev.h | 11 +++++++
lib/librte_ether/rte_ethdev.c | 3 +-
4 files changed, 39 insertions(+), 19 deletions(-)
diff --git a/lib/librte_eal/bsdapp/eal/rte_eal_version.map b/lib/librte_eal/bsdapp/eal/rte_eal_version.map
index 21640d6..150b0f7 100644
--- a/lib/librte_eal/bsdapp/eal/rte_eal_version.map
+++ b/lib/librte_eal/bsdapp/eal/rte_eal_version.map
@@ -162,6 +162,7 @@ DPDK_17.02 {
DPDK_17.05 {
global:
+ rte_eal_device_detach;
rte_bus_find;
rte_bus_find_by_device;
rte_bus_find_device;
diff --git a/lib/librte_eal/common/eal_common_dev.c b/lib/librte_eal/common/eal_common_dev.c
index c2d0f8d..829d7f3 100644
--- a/lib/librte_eal/common/eal_common_dev.c
+++ b/lib/librte_eal/common/eal_common_dev.c
@@ -100,6 +100,30 @@ int rte_eal_dev_attach(const char *name, const char *devargs)
return ret;
}
+int rte_eal_device_detach(struct rte_device *dev)
+{
+ struct rte_bus *bus;
+ int ret;
+
+ bus = rte_bus_find_by_device(dev);
+ if (!bus) {
+ RTE_LOG(ERR, EAL, "Cannot find bus for device (%s)\n",
+ dev->name);
+ return -EINVAL;
+ }
+
+ if (!bus->detach) {
+ RTE_LOG(ERR, EAL, "Bus function not supported\n");
+ return -ENOTSUP;
+ }
+
+ ret = bus->detach(dev);
+ if (ret)
+ RTE_LOG(ERR, EAL, "Driver cannot detach the device (%s)\n",
+ dev->name);
+ return ret;
+}
+
static int cmp_dev_name(const struct rte_device *dev, const void *_name)
{
const char *name = _name;
@@ -110,8 +134,6 @@ static int cmp_dev_name(const struct rte_device *dev, const void *_name)
int rte_eal_dev_detach(const char *name)
{
struct rte_device *dev;
- struct rte_bus *bus;
- int ret;
if (name == NULL) {
RTE_LOG(ERR, EAL, "Invalid device provided.\n");
@@ -124,20 +146,5 @@ int rte_eal_dev_detach(const char *name)
return -EINVAL;
}
- bus = rte_bus_find_by_device(dev);
- if (!bus) {
- RTE_LOG(ERR, EAL, "Cannot find bus for device (%s)\n", name);
- return -EINVAL;
- }
-
- if (!bus->detach) {
- RTE_LOG(ERR, EAL, "Bus function not supported\n");
- return -ENOTSUP;
- }
-
- ret = bus->detach(dev);
- if (ret)
- RTE_LOG(ERR, EAL, "Driver cannot detach the device (%s)\n",
- name);
- return ret;
+ return rte_eal_device_detach(dev);
}
diff --git a/lib/librte_eal/common/include/rte_dev.h b/lib/librte_eal/common/include/rte_dev.h
index de20c06..7092b16 100644
--- a/lib/librte_eal/common/include/rte_dev.h
+++ b/lib/librte_eal/common/include/rte_dev.h
@@ -123,6 +123,17 @@ struct rte_mem_resource {
void *addr; /**< Virtual address, NULL when not mapped. */
};
+/* FIXME: Forward declare */
+struct rte_device;
+
+/**
+ * Unplug the device from the device driver.
+ *
+ * @param dev
+ * A pointer to a rte_device structure.
+ */
+int rte_eal_device_detach(struct rte_device *dev);
+
/**
* A structure describing a device driver.
*/
diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index 83898a8..ff4f5ab 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -440,7 +440,8 @@ rte_eth_dev_detach(uint8_t port_id, char *name)
snprintf(name, sizeof(rte_eth_devices[port_id].data->name),
"%s", rte_eth_devices[port_id].data->name);
- ret = rte_eal_dev_detach(name);
+
+ ret = rte_eal_device_detach(rte_eth_devices[0].device);
if (ret < 0)
goto err;
--
2.1.4
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