if_filter_opt_s Struct Reference

Holds the value of an interface filter option, expressed as either a pcap filter string or a compiled BPF program. More...

#include <wtap_opttypes.h>

Public Attributes
if_filter_type_e	type
union {
char *   filter_str
struct wtap_bpf_insns {
unsigned   bpf_prog_len
wtap_bpf_insn_t *   bpf_prog
}   bpf_prog
}	data
	The filter payload, interpreted according to type.

Detailed Description

Holds the value of an interface filter option, expressed as either a pcap filter string or a compiled BPF program.

Member Data Documentation

[struct] [1/2]

struct { ... } ::wtap_bpf_insns if_filter_opt_s::bpf_prog

Compiled BPF filter program; active when type indicates a BPF program filter.

bpf_prog [2/2]

wtap_bpf_insn_t* if_filter_opt_s::bpf_prog

Pointer to the array of compiled BPF instructions.

bpf_prog_len

unsigned if_filter_opt_s::bpf_prog_len

Number of BPF instructions in the bpf_prog array.

filter_str

char* if_filter_opt_s::filter_str

Null-terminated pcap filter expression string (e.g. "tcp port 80"); active when type indicates a string filter.

type

if_filter_type_e if_filter_opt_s::type

Discriminator indicating which member of data is active (filter string or BPF program).

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The documentation for this struct was generated from the following file:

• /builds/wireshark/wireshark/wiretap/wtap_opttypes.h