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head/share/man/man4/dtrace_udp.4
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| .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||||
| .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||||
| .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||||
| .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||||
| .\" SUCH DAMAGE. | .\" SUCH DAMAGE. | ||||
| .\" | .\" | ||||
| .\" $FreeBSD$ | .\" $FreeBSD$ | ||||
| .\" | .\" | ||||
| .Dd April 18, 2015 | .Dd July 20, 2018 | ||||
| .Dt DTRACE_UDP 4 | .Dt DTRACE_UDP 4 | ||||
| .Os | .Os | ||||
| .Sh NAME | .Sh NAME | ||||
| .Nm dtrace_udp | .Nm dtrace_udp | ||||
| .Nd a DTrace provider for tracing events related to the UDP protocol | .Nd a DTrace provider for tracing events related to the UDP protocol | ||||
| .Sh SYNOPSIS | .Sh SYNOPSIS | ||||
| .Fn udp:::receive "pktinfo_t *" "csinfo_t *" "ipinfo_t *" "udpsinfo_t *" \ | .Fn udp:::receive "pktinfo_t *" "csinfo_t *" "ipinfo_t *" "udpsinfo_t *" \ | ||||
| "udpinfo_t *" | "udpinfo_t *" | ||||
| .Fn udp:::send "pktinfo_t *" "csinfo_t *" "ipinfo_t *" "udpsinfo_t *" \ | .Fn udp:::send "pktinfo_t *" "csinfo_t *" "ipinfo_t *" "udpsinfo_t *" \ | ||||
| "udpinfo_t *" | "udpinfo_t *" | ||||
| .Sh DESCRIPTION | .Sh DESCRIPTION | ||||
| The DTrace | The DTrace | ||||
| .Nm udp | .Nm udp | ||||
| provider allows users to trace events in the | provider allows users to trace events in the | ||||
| .Xr udp 4 | .Xr udp 4 | ||||
| protocol implementation. | protocol implementation. | ||||
| The | The | ||||
| .Fn udp:::send | .Fn udp:::send | ||||
| probe fires whenever the kernel prepares to transmit a UDP packet, and the | probe fires whenever the kernel prepares to transmit a UDP packet, and the | ||||
| .Fn udp:::receive | .Fn udp:::receive | ||||
| probe fires whenever the kernel receives a UDP packet. | probe fires whenever the kernel receives a UDP packet, unless | ||||
| the UDP header is incomplete, | |||||
| the destination port is 0, | |||||
| the length field is invalid, | |||||
| or the checksum is wrong. | |||||
| The arguments to these probes can be used to obtain detailed information about | The arguments to these probes can be used to obtain detailed information about | ||||
| the IP and UDP headers of the corresponding packet. | the IP and UDP headers of the corresponding packet. | ||||
| .Sh ARGUMENTS | .Sh ARGUMENTS | ||||
| The | The | ||||
| .Vt pktinfo_t | .Vt pktinfo_t | ||||
| argument is currently unimplemented and is included for compatibility with other | argument is currently unimplemented and is included for compatibility with other | ||||
| implementations of this provider. | implementations of this provider. | ||||
| Its fields are: | Its fields are: | ||||
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