I have a socket created with
socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)), and I've set it into promiscuous mode using:
struct ifreq ifr;
strncpy((char*)ifr.ifr_name, interface, IF_NAMESIZE);
if(ioctl(sock, SIOCGIFINDEX, &ifr)<0) fail(2);
struct packet_mreq mr;
memset(&mr, 0, sizeof(mr));
mr.mr_ifindex = ifr.ifr_ifindex;
mr.mr_type = PACKET_MR_PROMISC;
if(setsockopt(sock, SOL_PACKET, PACKET_ADD_MEMBERSHIP, &mr, sizeof(mr)) < 0) fail(2);
The problem is that when I do a
read() from the socket, it only returns data that's going from or coming to my computer.
How can I get it to read and process all packets on the network?
Wireshark shows all the packets fine, so I know it isn't my computer or NIC.
ifconfig reports that it's
PROMISC when it is running.