sbin/dhclient/bpf.c

250 	info->rbuf_offset = 0;
383 		if (interface->rbuf_offset >= interface->rbuf_len) {
388 			interface->rbuf_offset = 0;
397 		if (interface->rbuf_len - interface->rbuf_offset <
399 			interface->rbuf_offset = interface->rbuf_len;
404 		memcpy(&hdr, &interface->rbuf[interface->rbuf_offset],
411 		if (interface->rbuf_offset + hdr.bh_hdrlen + hdr.bh_caplen >
413 			interface->rbuf_offset = interface->rbuf_len;
418 		interface->rbuf_offset += hdr.bh_hdrlen;
426 			interface->rbuf_offset =
427 			    BPF_WORDALIGN(interface->rbuf_offset +
434 		    interface->rbuf_offset, hfrom);
442 			interface->rbuf_offset =
443 			    BPF_WORDALIGN(interface->rbuf_offset +
447 		interface->rbuf_offset += offset;
452 		    interface->rbuf_offset, from, NULL, hdr.bh_caplen);
456 			interface->rbuf_offset =
457 			    BPF_WORDALIGN(interface->rbuf_offset +
461 		interface->rbuf_offset += offset;
470 			interface->rbuf_offset =
471 			    BPF_WORDALIGN(interface->rbuf_offset +
477 		memcpy(buf, interface->rbuf + interface->rbuf_offset,
479 		interface->rbuf_offset =
480 		    BPF_WORDALIGN(interface->rbuf_offset +