diff options
Diffstat (limited to 'contrib/libpcap/pcap-dos.c')
| -rw-r--r-- | contrib/libpcap/pcap-dos.c | 53 |
1 files changed, 35 insertions, 18 deletions
diff --git a/contrib/libpcap/pcap-dos.c b/contrib/libpcap/pcap-dos.c index bcd277fa113c..43f50c7f13b2 100644 --- a/contrib/libpcap/pcap-dos.c +++ b/contrib/libpcap/pcap-dos.c @@ -4,8 +4,6 @@ * * pcap-dos.c: Interface to PKTDRVR, NDIS2 and 32-bit pmode * network drivers. - * - * @(#) $Header: /tcpdump/master/libpcap/pcap-dos.c,v 1.7 2008-04-22 17:16:30 guy Exp $ (LBL) */ #include <stdio.h> @@ -143,11 +141,19 @@ static struct device *get_device (int fd) return handle_to_device [fd-1]; } -pcap_t *pcap_create (const char *device, char *ebuf) +/* + * Private data for capturing on MS-DOS. + */ +struct pcap_dos { + void (*wait_proc)(void); /* call proc while waiting */ + struct pcap_stat stat; +}; + +pcap_t *pcap_create_interface (const char *device, char *ebuf) { pcap_t *p; - p = pcap_create_common(device, ebuf); + p = pcap_create_common(device, ebuf, sizeof (struct pcap_dos)); if (p == NULL) return (NULL); @@ -161,6 +167,8 @@ pcap_t *pcap_create (const char *device, char *ebuf) */ static int pcap_activate_dos (pcap_t *pcap) { + struct pcap_dos *pcapd = pcap->priv; + if (pcap->opt.rfmon) { /* * No monitor mode on DOS. @@ -210,15 +218,16 @@ static int pcap_activate_dos (pcap_t *pcap) static int pcap_read_one (pcap_t *p, pcap_handler callback, u_char *data) { + struct pcap_dos *pd = p->priv; struct pcap_pkthdr pcap; - struct timeval now, expiry; + struct timeval now, expiry = { 0,0 }; BYTE *rx_buf; int rx_len = 0; - if (p->md.timeout > 0) + if (p->opt.timeout > 0) { gettimeofday2 (&now, NULL); - expiry.tv_usec = now.tv_usec + 1000UL * p->md.timeout; + expiry.tv_usec = now.tv_usec + 1000UL * p->opt.timeout; expiry.tv_sec = now.tv_sec; while (expiry.tv_usec >= 1000000L) { @@ -287,10 +296,10 @@ pcap_read_one (pcap_t *p, pcap_handler callback, u_char *data) return (1); } - /* If not to wait for a packet or pcap_close() called from + /* If not to wait for a packet or pcap_cleanup_dos() called from * e.g. SIGINT handler, exit loop now. */ - if (p->md.timeout <= 0 || (volatile int)p->fd <= 0) + if (p->opt.timeout <= 0 || (volatile int)p->fd <= 0) break; gettimeofday2 (&now, NULL); @@ -308,7 +317,7 @@ pcap_read_one (pcap_t *p, pcap_handler callback, u_char *data) if (rx_len < 0) /* receive error */ { - p->md.stat.ps_drop++; + pd->stat.ps_drop++; #ifdef USE_32BIT_DRIVERS if (pcap_pkt_debug > 1) printk ("pkt-err %s\n", pktInfo.error); @@ -321,9 +330,10 @@ pcap_read_one (pcap_t *p, pcap_handler callback, u_char *data) static int pcap_read_dos (pcap_t *p, int cnt, pcap_handler callback, u_char *data) { + struct pcap_dos *pd = p->priv; int rc, num = 0; - while (num <= cnt || (cnt < 0)) + while (num <= cnt || PACKET_COUNT_IS_UNLIMITED(cnt)) { if (p->fd <= 0) return (-1); @@ -343,6 +353,7 @@ pcap_read_dos (pcap_t *p, int cnt, pcap_handler callback, u_char *data) static int pcap_stats_dos (pcap_t *p, struct pcap_stat *ps) { struct net_device_stats *stats; + struct pcap_dos *pd; struct device *dev = p ? get_device(p->fd) : NULL; if (!dev) @@ -359,12 +370,13 @@ static int pcap_stats_dos (pcap_t *p, struct pcap_stat *ps) FLUSHK(); - p->md.stat.ps_recv = stats->rx_packets; - p->md.stat.ps_drop += stats->rx_missed_errors; - p->md.stat.ps_ifdrop = stats->rx_dropped + /* queue full */ + pd = p->priv; + pd->stat.ps_recv = stats->rx_packets; + pd->stat.ps_drop += stats->rx_missed_errors; + pd->stat.ps_ifdrop = stats->rx_dropped + /* queue full */ stats->rx_errors; /* HW errors */ if (ps) - *ps = p->md.stat; + *ps = pd->stat; return (0); } @@ -428,10 +440,13 @@ u_long pcap_filter_packets (void) */ static void pcap_cleanup_dos (pcap_t *p) { + struct pcap_dos *pd; + if (p && !exc_occured) { + pd = p->priv; if (pcap_stats(p,NULL) < 0) - p->md.stat.ps_drop = 0; + pd->stat.ps_drop = 0; if (!get_device(p->fd)) return; @@ -590,10 +605,12 @@ void pcap_assert (const char *what, const char *file, unsigned line) */ void pcap_set_wait (pcap_t *p, void (*yield)(void), int wait) { + struct pcap_dos *pd; if (p) { - p->wait_proc = yield; - p->md.timeout = wait; + pd = p->priv; + pd->wait_proc = yield; + p->opt.timeout = wait; } } |