5  *  pcap-dos.c: Interface to PKTDRVR, NDIS2 and 32-bit pmode
38 #include "pcap.h"
39 #include "pcap-dos.h"
40 #include "pcap-int.h"
111 static int  init_watt32 (struct pcap *pcap, const char *dev_name, char *err_buf);
114 static void watt32_recv_hook (u_char *dummy, const struct pcap_pkthdr *pcap,
169 static int pcap_activate_dos (pcap_t *pcap)  in pcap_activate_dos()  argument
171   if (pcap->opt.rfmon) {  in pcap_activate_dos()
186   if (pcap->snapshot <= 0 || pcap->snapshot > MAXIMUM_SNAPLEN)  in pcap_activate_dos()
187     pcap->snapshot = MAXIMUM_SNAPLEN;  in pcap_activate_dos()
189   if (pcap->snapshot < ETH_MIN+8)  in pcap_activate_dos()
190       pcap->snapshot = ETH_MIN+8;  in pcap_activate_dos()
192   if (pcap->snapshot > ETH_MAX)   /* silently accept and truncate large MTUs */  in pcap_activate_dos()
193       pcap->snapshot = ETH_MAX;  in pcap_activate_dos()
195   pcap->linktype          = DLT_EN10MB;  /* !! */  in pcap_activate_dos()
196   pcap->cleanup_op        = pcap_cleanup_dos;  in pcap_activate_dos()
197   pcap->read_op           = pcap_read_dos;  in pcap_activate_dos()
198   pcap->stats_op          = pcap_stats_dos;  in pcap_activate_dos()
199   pcap->inject_op         = pcap_sendpacket_dos;  in pcap_activate_dos()
200   pcap->setfilter_op      = pcap_setfilter_dos;  in pcap_activate_dos()
201   pcap->setdirection_op   = NULL;  /* Not implemented.*/  in pcap_activate_dos()
202   pcap->fd                = ++ref_count;  in pcap_activate_dos()
204   pcap->bufsize = ETH_MAX+100;     /* add some margin */  in pcap_activate_dos()
205   pcap->buffer = calloc (pcap->bufsize, 1);  in pcap_activate_dos()
207   if (pcap->fd == 1)  /* first time we're called */  in pcap_activate_dos()
209     if (!init_watt32(pcap, pcap->opt.device, pcap->errbuf) ||  in pcap_activate_dos()
210         !first_init(pcap->opt.device, pcap->errbuf, pcap->opt.promisc))  in pcap_activate_dos()
212       /* XXX - free pcap->buffer? */  in pcap_activate_dos()
217   else if (stricmp(active_dev->name,pcap->opt.device))  in pcap_activate_dos()
219     snprintf (pcap->errbuf, PCAP_ERRBUF_SIZE,  in pcap_activate_dos()
221                    "(`%s' vs. `%s')", active_dev->name, pcap->opt.device);  in pcap_activate_dos()
222     /* XXX - free pcap->buffer? */  in pcap_activate_dos()
225   handle_to_device [pcap->fd-1] = active_dev;  in pcap_activate_dos()
230  * Poll the receiver queue and call the pcap callback-handler
237   struct pcap_pkthdr pcap;  in pcap_read_one()  local
283       pcap.caplen = min (rx_len, p->snapshot);  in pcap_read_one()
284       pcap.len    = rx_len;  in pcap_read_one()
287           (!p->fcode.bf_insns || pcap_filter(p->fcode.bf_insns, p->buffer, pcap.len, pcap.caplen)))  in pcap_read_one()
294         gettimeofday2 (&pcap.ts, NULL);  in pcap_read_one()
295         (*callback) (data, &pcap, p->buffer);  in pcap_read_one()
399     strcpy (p->errbuf, "illegal pcap handle");  in pcap_stats_dos()
477  * Close pcap device. Not called for offline captures.
813  * Open the pcap device for the first client calling pcap_activate()
883  * Hook functions for using Watt-32 together with pcap
889 static void watt32_recv_hook (u_char *dummy, const struct pcap_pkthdr *pcap,  in watt32_recv_hook()  argument
895   memcpy (rxbuf, buf, pcap->caplen);  in watt32_recv_hook()
970  * make Watt-32 and pcap co-operate.
972 static int init_watt32 (struct pcap *pcap, const char *dev_name, char *err_buf)  in init_watt32()  argument
1003   /* if pcap is using a 32-bit driver w/o a pktdrvr loaded, we  in init_watt32()
1044   memcpy (&pcap_save, pcap, sizeof(pcap_save));  in init_watt32()
1247  * Search & probe for supported 32-bit (pmode) pcap devices