PCAP_FINDALLDEVS(3) | PCAP_FINDALLDEVS(3) |
char errbuf[PCAP_ERRBUF_SIZE];
int pcap_findalldevs(pcap_if_t **alldevsp, char *errbuf);
next | if not NULL, a pointer to the next element in the list; NULL for the last element of the list |
name | a pointer to a string giving a name for the device to pass to pcap_open_live() |
description | if not NULL, a pointer to a string giving a human-readable description of the device |
addresses | a pointer to the first element of a list of addresses for the interface |
flags | interface flags: |
PCAP_IF_LOOPBACK | set if the interface is a loopback interface |
Each element of the list of addresses is of type pcap_addr_t, and has the following members:
next | if not NULL, a pointer to the next element in the list; NULL for the last element of the list |
addr | a pointer to a struct sockaddr containing an address |
netmask | if not NULL, a pointer to a struct sockaddr that contains the netmask corresponding to the address pointed to by addr |
broadaddr | if not NULL, a pointer to a struct sockaddr that contains the broadcast address corresponding to the address pointed to by addr; may be null if the interface doesn't support broadcasts |
dstaddr | if not NULL, a pointer to a struct sockaddr that contains the destination address corresponding to the address pointed to by addr; may be null if the interface isn't a point-to-point interface |
Note that not all the addresses in the list of addresses are necessarily IPv4 or IPv6 addresses - you must check the sa_family member of the struct sockaddr before interpreting the contents of the address.
The list of devices must be freed with pcap_freealldevs().
5 April 2008 |