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udp.stp
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// UDP tapset // Copyright (C) 2006 Intel Corporation. // Copyright (C) 2013 Red Hat, Inc. // // This file is part of systemtap, and is free software. You can // redistribute it and/or modify it under the terms of the GNU General // Public License (GPL); either version 2, or (at your option) any // later version. // <tapsetdescription> // This family of probe points is used to probe events that occur in the UDP layer. // </tapsetdescription> /* Helper functions analogous (or even identical) those in tcp.stp */ @__private30 function __get_skb_udphdr:long (skb:long) { return __get_skb_tcphdr(skb) } @__private30 function __udp_sock_sport (sock) { return __tcp_sock_sport (sock) } @__private30 function __udp_sock_dport (sock) { return __tcp_sock_dport (sock) } @__private30 function __udp_skb_dport(udphdr) { return ntohs(@cast(udphdr, "udphdr")->dest) } @__private30 function __udp_skb_sport(udphdr) { return ntohs(@cast(udphdr, "udphdr")->source) } /** * probe udp.sendmsg - Fires whenever a process sends a UDP message * @name: The name of this probe * @sock: Network socket used by the process * @size: Number of bytes sent by the process * @family: IP address family * @saddr: A string representing the source IP address * @daddr: A string representing the destination IP address * @sport: UDP source port * @dport: UDP destination port * * Context: * The process which sent a UDP message */ probe udp.sendmsg = kernel.function("udp_sendmsg") { name = "udp.sendmsg" sock = $sk size = $len %( systemtap_v >= "2.3" %? family = __ip_sock_family($sk) saddr = format_ipaddr(__ip_sock_saddr($sk), __ip_sock_family($sk)) daddr = format_ipaddr(__ip_sock_daddr($sk), __ip_sock_family($sk)) sport = __udp_sock_sport($sk) dport = __udp_sock_dport($sk) %) } /** * probe udp.sendmsg.return - Fires whenever an attempt to send a UDP message is completed * @name: The name of this probe * @size: Number of bytes sent by the process * * Context: * The process which sent a UDP message */ probe udp.sendmsg.return = kernel.function("udp_sendmsg").return { name = "udp.sendmsg" size = $return %( systemtap_v >= "2.3" %? family = __ip_sock_family(@entry($sk)) saddr = format_ipaddr(__ip_sock_saddr(@entry($sk)), __ip_sock_family(@entry($sk))) daddr = format_ipaddr(__ip_sock_daddr(@entry($sk)), __ip_sock_family(@entry($sk))) sport = __udp_sock_sport(@entry($sk)) dport = __udp_sock_dport(@entry($sk)) %) } /** * probe udp.recvmsg - Fires whenever a UDP message is received * @name: The name of this probe * @sock: Network socket used by the process * @size: Number of bytes received by the process * @family: IP address family * @saddr: A string representing the source IP address * @daddr: A string representing the destination IP address * @sport: UDP source port * @dport: UDP destination port * * Context: * The process which received a UDP message */ probe udp.recvmsg = kernel.function("udp_recvmsg") { name = "udp.recvmsg" sock = $sk size = $len %( systemtap_v >= "2.3" %? family = __ip_sock_family($sk) saddr = format_ipaddr(__ip_sock_saddr($sk), __ip_sock_family($sk)) daddr = format_ipaddr(__ip_sock_daddr($sk), __ip_sock_family($sk)) sport = __udp_sock_sport($sk) dport = __udp_sock_dport($sk) %) } /** * probe udp.recvmsg.return - Fires whenever an attempt to receive a UDP message received is completed * @name: The name of this probe * @size: Number of bytes received by the process * @family: IP address family * @saddr: A string representing the source IP address * @daddr: A string representing the destination IP address * @sport: UDP source port * @dport: UDP destination port * * Context: * The process which received a UDP message */ probe udp.recvmsg.return = kernel.function("udp_recvmsg").return { name = "udp.recvmsg" size = $return %( systemtap_v >= "2.3" %? family = __ip_sock_family(@entry($sk)) saddr = format_ipaddr(__ip_sock_saddr(@entry($sk)), __ip_sock_family(@entry($sk))) daddr = format_ipaddr(__ip_sock_daddr(@entry($sk)), __ip_sock_family(@entry($sk))) sport = __udp_sock_sport(@entry($sk)) dport = __udp_sock_dport(@entry($sk)) %) } /** * probe udp.disconnect - Fires when a process requests for a UDP disconnection * @name: The name of this probe * @sock: Network socket used by the process * @flags: Flags (e.g. FIN, etc) * @family: IP address family * @saddr: A string representing the source IP address * @daddr: A string representing the destination IP address * @sport: UDP source port * @dport: UDP destination port * * Context: * The process which requests a UDP disconnection */ probe udp.disconnect = kernel.function("udp_disconnect") { name = "udp.disconnect" sock = $sk flags = $flags %( systemtap_v >= "2.3" %? family = __ip_sock_family($sk) saddr = format_ipaddr(__ip_sock_saddr($sk), __ip_sock_family($sk)) daddr = format_ipaddr(__ip_sock_daddr($sk), __ip_sock_family($sk)) sport = __udp_sock_sport($sk) dport = __udp_sock_dport($sk) %) } /** * probe udp.disconnect.return - UDP has been disconnected successfully * @name: The name of this probe * @ret: Error code (0: no error) * @family: IP address family * @saddr: A string representing the source IP address * @daddr: A string representing the destination IP address * @sport: UDP source port * @dport: UDP destination port * * Context: * The process which requested a UDP disconnection */ probe udp.disconnect.return = kernel.function("udp_disconnect").return { name = "udp.disconnect" ret = $return %( systemtap_v >= "2.3" %? family = __ip_sock_family(@entry($sk)) saddr = format_ipaddr(__ip_sock_saddr(@entry($sk)), __ip_sock_family(@entry($sk))) daddr = format_ipaddr(__ip_sock_daddr(@entry($sk)), __ip_sock_family(@entry($sk))) sport = __udp_sock_sport(@entry($sk)) dport = __udp_sock_dport(@entry($sk)) %) }