установить протокол захвата для еще не активированного дескриптора захвата (set capture protocol for a not-yet-activated capture handle)
Имя (Name)
pcap_set_protocol_linux - set capture protocol for a not-yet-
activated capture handle
Синопсис (Synopsis)
#include <pcap/pcap.h>
int pcap_set_protocol_linux(pcap_t *p, int protocol);
Описание (Description)
On network interface devices on Linux, pcap_set_protocol_linux()
sets the protocol to be used in the socket(2) call to create a
capture socket when the handle is activated. The argument is a
link-layer protocol value, such as the values in the
<linux/if_ether.h> header file, specified in host byte order. If
protocol is non-zero, packets of that protocol will be captured
when the handle is activated, otherwise, all packets will be
captured. This function is only provided on Linux, and, if it is
used on any device other than a network interface, it will have
no effect.
It should not be used in portable code; instead, a filter should
be specified with pcap_setfilter(3PCAP).
If a given network interface provides a standard link-layer
header, with a standard packet type, but provides some packet
types with a different socket-layer protocol type from the one in
the link-layer header, that packet type cannot be filtered with a
filter specified with pcap_setfilter() but can be filtered by
specifying the socket-layer protocol type using
pcap_set_protocol_linux().
Возвращаемое значение (Return value)
pcap_set_protocol_linux() returns 0 on success or
PCAP_ERROR_ACTIVATED if called on a capture handle that has been
activated.
Обратная совместимость (Backward compatibility)
This function became available in libpcap release 1.9.0.
Смотри также (See also)
pcap(3PCAP), pcap_create(3PCAP), pcap_activate(3PCAP)
