2  * This code is derived from code formerly in pcap-dlpi.c, originally
5  * Mark Pizzolato <List-tcpdump-workers@subscriptions.pizzolato.net>,
11  * by pcap-[dlpi,libdlpi].c.
31 	 * large enough to hold a chunk.
39 	 * what the value used to be - there's no particular reason why it
67 #include "pcap-int.h"
78 pcap_stats_dlpi(pcap_t *p, struct pcap_stat *ps)  in pcap_stats_dlpi()  argument
80 	struct pcap_dlpi *pd = p->priv;  in pcap_stats_dlpi()
93 	 * the received-packet count).  in pcap_stats_dlpi()
105 	*ps = pd->stat;  in pcap_stats_dlpi()
110 	ps->ps_recv += ps->ps_drop;  in pcap_stats_dlpi()
136 	struct pcap_dlpi *pd = p->priv;  in pcap_process_pkts()
160 		 * If so, return immediately - if we haven't read any  in pcap_process_pkts()
161 		 * packets, clear the flag and return -2 to indicate  in pcap_process_pkts()
167 		if (p->break_loop) {  in pcap_process_pkts()
169 				p->break_loop = 0;  in pcap_process_pkts()
170 				return (-2);  in pcap_process_pkts()
172 				p->bp = bufp;  in pcap_process_pkts()
173 				p->cc = ep - bufp;  in pcap_process_pkts()
184 		pd->stat.ps_drop = sbp->sbh_drops;  in pcap_process_pkts()
186 		bufp += sbp->sbh_totlen;  in pcap_process_pkts()
187 		origlen = sbp->sbh_origlen;  in pcap_process_pkts()
188 		caplen = sbp->sbh_msglen;  in pcap_process_pkts()
191 		caplen = min(p->snapshot, len);  in pcap_process_pkts()
195 		++pd->stat.ps_recv;  in pcap_process_pkts()
196 		if (pcapint_filter(p->fcode.bf_insns, pk, origlen, caplen)) {  in pcap_process_pkts()
198 			pkthdr.ts.tv_sec = sbp->sbh_timestamp.tv_sec;  in pcap_process_pkts()
199 			pkthdr.ts.tv_usec = sbp->sbh_timestamp.tv_usec;  in pcap_process_pkts()
206 			if (pkthdr.caplen > (bpf_u_int32)p->snapshot)  in pcap_process_pkts()
207 				pkthdr.caplen = (bpf_u_int32)p->snapshot;  in pcap_process_pkts()
210 				p->cc = ep - bufp;  in pcap_process_pkts()
211 				p->bp = bufp;  in pcap_process_pkts()
218 	p->cc = 0;  in pcap_process_pkts()
223  * Process the mac type. Returns -1 if no matching mac type found, otherwise 0.
234 		p->linktype = DLT_EN10MB;  in pcap_process_mactype()
235 		p->offset = 2;  in pcap_process_mactype()
238 		 * link-layer-type list with DLT_EN10MB and DLT_DOCSIS, so  in pcap_process_mactype()
243 		 * DOCSIS frames out on the wire inside the low-level  in pcap_process_mactype()
246 		p->dlt_list = (u_int *)malloc(sizeof(u_int) * 2);  in pcap_process_mactype()
247 		if (p->dlt_list == NULL) {  in pcap_process_mactype()
248 			pcapint_fmt_errmsg_for_errno(p->errbuf, PCAP_ERRBUF_SIZE,  in pcap_process_mactype()
250 			return (-1);  in pcap_process_mactype()
252 		p->dlt_list[0] = DLT_EN10MB;  in pcap_process_mactype()
253 		p->dlt_list[1] = DLT_DOCSIS;  in pcap_process_mactype()
254 		p->dlt_count = 2;  in pcap_process_mactype()
258 		p->linktype = DLT_FDDI;  in pcap_process_mactype()
259 		p->offset = 3;  in pcap_process_mactype()
263 		/* XXX - what about DL_TPB?  Is that Token Bus?  */  in pcap_process_mactype()
264 		p->linktype = DLT_IEEE802;  in pcap_process_mactype()
265 		p->offset = 2;  in pcap_process_mactype()
270 		p->linktype = DLT_SUNATM;  in pcap_process_mactype()
271 		p->offset = 0;  /* works for LANE and LLC encapsulation */  in pcap_process_mactype()
277 		p->linktype = DLT_IPV4;  in pcap_process_mactype()
278 		p->offset = 0;  in pcap_process_mactype()
284 		p->linktype = DLT_IPV6;  in pcap_process_mactype()
285 		p->offset = 0;  in pcap_process_mactype()
292 		 * XXX - DL_IPNET devices default to "raw IP" rather than  in pcap_process_mactype()
300 		p->linktype = DLT_RAW;  in pcap_process_mactype()
301 		p->offset = 0;  in pcap_process_mactype()
306 		snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "unknown mactype 0x%x",  in pcap_process_mactype()
308 		retv = -1;  in pcap_process_mactype()
316  * Push and configure the buffer module. Returns -1 for error, otherwise 0.
324 	/* Non-standard call to get the data nicely buffered. */  in pcap_conf_bufmod()
325 	if (ioctl(p->fd, I_PUSH, "bufmod") != 0) {  in pcap_conf_bufmod()
326 		pcap_stream_err("I_PUSH bufmod", errno, p->errbuf);  in pcap_conf_bufmod()
327 		return (-1);  in pcap_conf_bufmod()
332 	    strioctl(p->fd, SBIOCSSNAP, sizeof(ss), (char *)&ss) != 0) {  in pcap_conf_bufmod()
333 		pcap_stream_err("SBIOCSSNAP", errno, p->errbuf);  in pcap_conf_bufmod()
334 		return (-1);  in pcap_conf_bufmod()
337 	if (p->opt.immediate) {  in pcap_conf_bufmod()
341 		if (strioctl(p->fd, SBIOCSTIME, sizeof(to), (char *)&to) != 0) {  in pcap_conf_bufmod()
342 			pcap_stream_err("SBIOCSTIME", errno, p->errbuf);  in pcap_conf_bufmod()
343 			return (-1);  in pcap_conf_bufmod()
347 		if (p->opt.timeout != 0) {  in pcap_conf_bufmod()
348 			to.tv_sec = p->opt.timeout / 1000;  in pcap_conf_bufmod()
349 			to.tv_usec = (p->opt.timeout * 1000) % 1000000;  in pcap_conf_bufmod()
350 			if (strioctl(p->fd, SBIOCSTIME, sizeof(to), (char *)&to) != 0) {  in pcap_conf_bufmod()
351 				pcap_stream_err("SBIOCSTIME", errno, p->errbuf);  in pcap_conf_bufmod()
352 				return (-1);  in pcap_conf_bufmod()
358 		if (strioctl(p->fd, SBIOCSCHUNK, sizeof(chunksize), (char *)&chunksize)  in pcap_conf_bufmod()
360 			pcap_stream_err("SBIOCSCHUNKP", errno, p->errbuf);  in pcap_conf_bufmod()
361 			return (-1);  in pcap_conf_bufmod()
370  * Allocate data buffer. Returns -1 if memory allocation fails, else 0.
375 	p->bufsize = PKTBUFSIZE;  in pcap_alloc_databuf()
376 	p->buffer = malloc(p->bufsize + p->offset);  in pcap_alloc_databuf()
377 	if (p->buffer == NULL) {  in pcap_alloc_databuf()
378 		pcapint_fmt_errmsg_for_errno(p->errbuf, PCAP_ERRBUF_SIZE,  in pcap_alloc_databuf()
380 		return (-1);  in pcap_alloc_databuf()
387  * Issue a STREAMS I_STR ioctl. Returns -1 on error, otherwise
397 	str.ic_timout = -1;  in strioctl()