Lines Matching full:that
5 .\" modification, are permitted provided that: (1) source code distributions
72 UTF-16LE string - note that this attempt is unsafe, as it may run past
75 returning a UTF-16LE string. Programs that don't call
102 To obtain a list of devices that can be opened for a live capture, call
109 will return the first device on that list that is not a ``loopback``
122 for use in routines that require a
141 The options that can be set on a capture handle include
143 If, when capturing, you capture the entire contents of the packet, that
154 than the size of a packet that is captured, only the first
156 bytes of that packet will be captured and provided as packet data.
168 to a network address that the network adapter isn't configured to
173 packets, even if they are not sent to an address that the adapter
177 Note that even if an application does not set promiscuous mode, the
195 Frequency MONitor"), the adapter will supply all frames that it
199 Note that in monitor mode the adapter might disassociate from the
200 network with which it's associated, so that you will not be able to use
201 any wireless networks with that adapter. This could prevent accessing
221 that a single wakeup would be done for multiple packets, and each set of
225 per second that can be captured.
227 The packet buffer timeout is required so that an application won't wait
229 delivered; if packets are arriving slowly, that wait could take an
232 Not all platforms support a packet buffer timeout; on platforms that
234 timeout, on platforms that support a packet buffer timeout, will cause a
240 the packet buffer timeout cannot be used to cause calls that read
244 This means that the packet buffer timeout should
248 guarantee that a call reading packets will return after the timeout
258 Packets that arrive for a capture are stored in a buffer, so that they
260 some platforms, the buffer's size can be set; a size that's too small
261 could mean that, if too many packets are being captured and the snapshot
262 length doesn't limit the amount of data that's buffered, packets could
264 packets from it, while a size that's too large could use more
272 come from different sources that can have different resolutions or that
281 Reading packets from a network interface may require that you have
299 mode. Note that, on many (perhaps all) interfaces, if you don't capture
307 that device. A user can be given that privilege by, for example, adding
308 that privilege to the user's
325 that supports capability bits such as CAP_NET_RAW and code to allow
334 operation on that interface using
338 has enabled copy-all-mode operation on that interface using
342 packet capture on an interface probably requires that either
344 operation, be enabled on that interface.
349 on systems that don't have a cloning BPF device, or to
351 on systems that do.
356 if the system even supports that; if it doesn't support that, you might
357 have to find some other way to make that happen at boot time.
368 lists the values it returns and describes the packet formats that
373 assume that the packets for a given capture or ``savefile`` will have
407 get a list of devices that can be opened for a live capture
413 get first non-loopback device on that list
613 giving the number of bytes of the packet that are available from the
637 that is sufficiently large to get all of the packet's data - a value of
643 is passed an argument that points to a
685 rely on it, as it does not happen on other platforms. Note that the
690 A handle can be put into ``non-blocking mode'', so that those routines
691 will, rather than blocking, return an indication that no packets are
697 to determine whether a handle is in non-blocking mode. Note that
706 that can be used in those routines, call
708 If the routine indicates that data is
718 periodically for packets; in that case,
735 gives details. Note that, just as an attempt to read packets from a
741 that a descriptor is ready to read even if there are no packets
786 that can be used in calls such as
823 A compiled filter can also be applied directly to a packet that has been
1008 directory on most platforms; if you are writing an application that must
1020 writing an application that must work on versions of libpcap prior to