[dpdk-dev] [PATCH v2 09/10] igbuio: show irq mode in sysfs
Stephen Hemminger
stephen at networkplumber.org
Sat Jun 7 01:50:37 CEST 2014
Since irq mode is determined dynamically on a per-device
basis, and virtio needs to know if using intx or msi-x,
make it a sysfs attribute.
--- a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
+++ b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
@@ -43,6 +43,10 @@
IGBUIO_MSIX_INTR_MODE
};
+static const char *igbuio_intr_modes[] = {
+ "legacy", "msi", "msix"
+};
+
/**
* A structure describing the private information for a uio device.
*/
@@ -128,8 +132,20 @@
}
static DEVICE_ATTR(max_vfs, S_IRUGO | S_IWUSR, show_max_vfs, store_max_vfs);
+
+static ssize_t irq_mode_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct uio_info *info = pci_get_drvdata(to_pci_dev(dev));
+ struct rte_uio_pci_dev *udev = igbuio_get_uio_pci_dev(info);
+
+ return sprintf(buf, "%s\n", igbuio_intr_modes[udev->mode]);
+}
+static DEVICE_ATTR(irq_mode, S_IRUGO, irq_mode_show, NULL);
+
static struct attribute *dev_attrs[] = {
&dev_attr_max_vfs.attr,
+ &dev_attr_irq_mode.attr,
NULL,
};
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