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[PATCH 1/3] Adding a some new probes to the networking.stp tapset
A tapset that helps those who are working with network devices.
These new fnctions try to cover almost all functions related to
these network devices.
---
tapset/networking.stp | 177 +++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 177 insertions(+), 0 deletions(-)
diff --git a/tapset/networking.stp b/tapset/networking.stp
index f6d7853..532fe18 100644
--- a/tapset/networking.stp
+++ b/tapset/networking.stp
@@ -8,6 +8,12 @@
// <tapsetdescription>
// This family of probe points is used to probe the activities of the network device.
// </tapsetdescription>
+
+/* A function that returns the device name given the net_device struct */
+function get_netdev_name:string (addr:long) {
+ return kernel_string(@cast(addr, "net_device")->name)
+}
+
/**
* probe netdev.receive - Data recieved from network device.
* @dev_name: The name of the device. e.g: eth0, ath1.
@@ -78,3 +84,174 @@ probe netdev.transmit
protocol = $skb->protocol
truesize = $skb->truesize
}
+
+/**
+ * probe netdev.change_mtu - Called when the netdev MTU is changed
+ * @dev_name: The device that will have the MTU changed
+ * @old_mtu: The current MTU
+ * @new_mtu: The new MTU
+ */
+probe netdev.change_mtu
+ = kernel.function("dev_set_mtu")
+{
+ old_mtu = $dev->mtu
+ new_mtu = $new_mtu
+ dev_name = get_netdev_name($dev)
+}
+
+/**
+ * probe netdev.open - Called when the device is opened
+ * @dev_name: The device that is going to be opened
+ */
+probe netdev.open
+ = kernel.function("dev_open")
+{
+ dev_name = get_netdev_name($dev)
+}
+
+/**
+ * probe netdev.close - Called when the device is closed
+ * @dev_name: The device that is going to be closed
+ */
+probe netdev.close
+ = kernel.function("dev_close")
+{
+ dev_name = get_netdev_name($dev)
+}
+
+/**
+ * probe netdev.hard_transmit - Called when the devices is going to TX (hard)
+ * @dev_name: The device scheduled to transmit
+ * @protocol: The protocol used in the transmission
+ * @length: The length of the transmit buffer.
+ * @truesize: The size of the the data to be transmitted.
+ */
+probe netdev.hard_transmit
+ = kernel.function("dev_hard_start_xmit")
+{
+ dev_name = get_netdev_name($dev)
+ protocol = $skb->protocol
+ length = $skb->len
+ truesize = $skb->truesize
+}
+
+/**
+ * probe netdev.rx - Called when the device is going to receive a packet
+ * @dev_name: The device received the packet
+ * @protocol: The packet protocol
+ */
+probe netdev.rx
+ = kernel.function("netif_rx")
+{
+ netdev = $skb->dev
+ dev_name = get_netdev_name(netdev)
+ protocol = $skb->protocol
+}
+
+/**
+ * probe netdev.change_rx_flag - Called when the device RX flag will be changed
+ * @dev_name: The device that will be changed
+ * @flags: The new flags
+ */
+probe netdev.change_rx_flag
+ = kernel.function("dev_change_rx_flags")
+{
+ dev_name = get_netdev_name($dev)
+ flags = $flags
+}
+
+/**
+ * probe netdev.set_promiscuity - Called when the device enters/leaves promiscuity
+ * @dev_name: The device that is entering/leaving promiscuity mode
+ * @enable: If the device is entering promiscuity mode
+ * @disable: If the device is leaving promiscuity mode
+ * @inc: Count the number of promiscuity openers
+ */
+probe netdev.set_promiscuity
+ = kernel.function("dev_set_promiscuity")
+{
+ dev_name = get_netdev_name($dev)
+ if ($inc){
+ enable = 1
+ } else {
+ disable = 1
+ }
+ inc = $inc
+}
+
+/**
+ * probe netdev.ioctl - Called when the device suffers an IOCTL
+ * @cmd: The IOCTL request
+ * @arg: The IOCTL argument (usually the netdev interface)
+ */
+probe netdev.ioctl
+ = kernel.function("dev_ioctl")
+{
+ cmd = $cmd
+ arg = user_string($arg)
+}
+
+/**
+ * probe netdev.register - Called when the device is registered
+ * @dev_name: The device that is going to be registered
+ */
+probe netdev.register
+ = kernel.function("register_netdevice"),
+ kernel.function("register_netdev")
+{
+ dev_name = get_netdev_name($dev)
+}
+
+/**
+ * probe netdev.unregister - Called when the device is being unregistered
+ * @dev_name: The device that is going to be unregistered
+ */
+probe netdev.unregister
+ = kernel.function("unregister_netdev")
+{
+ dev_name = get_netdev_name($dev)
+}
+
+/**
+ * probe netdev.get_stats - Called when someone asks the device statistics
+ * @dev_name: The device that is going to provide the statistics
+ */
+probe netdev.get_stats
+ = kernel.function("dev_get_stats")
+{
+ dev_name = get_netdev_name($dev)
+}
+
+/**
+ * probe netdev.change_mac - Called when the netdev_name has the MAC changed
+ * @dev_name: The device that will have the MTU changed
+ * @mac_len: The MAC length
+ * @old_mac: The current MAC address
+ * @new_mac: The new MAC address
+ */
+probe netdev.change_mac
+ = kernel.function("dev_set_mac_address")
+{
+ dev_name = get_netdev_name($dev)
+ mac_len = $dev->addr_len
+
+ // Old MAC Address
+ zero = $dev->dev_addr[0]
+ one = $dev->dev_addr[1]
+ two = $dev->dev_addr[2]
+ three =$dev->dev_addr[3]
+ four = $dev->dev_addr[4]
+ five = $dev->dev_addr[5]
+ old_mac = sprintf("%02x:%02x:%02x:%02x:%02x:%02x",
+ zero, one, two, three, four, five)
+
+ // New MAC Address
+ zero = $sa->sa_data[0]
+ one = $sa->sa_data[1]
+ two = $sa->sa_data[2]
+ three =$sa->sa_data[3]
+ four =$sa->sa_data[4]
+ five = $sa->sa_data[5]
+ new_mac = sprintf("%02x:%02x:%02x:%02x:%02x:%02x",
+ zero, one, two, three, four, five)
+}
--
1.6.0.2