diff options
Diffstat (limited to 'contrib/libpcap/pcap-nit.c')
| -rw-r--r-- | contrib/libpcap/pcap-nit.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/contrib/libpcap/pcap-nit.c b/contrib/libpcap/pcap-nit.c index 6be658d..fe67299 100644 --- a/contrib/libpcap/pcap-nit.c +++ b/contrib/libpcap/pcap-nit.c @@ -20,7 +20,7 @@ */ #ifndef lint static const char rcsid[] = - "@(#) $Header: /tcpdump/master/libpcap/pcap-nit.c,v 1.39 2000/10/28 00:01:29 guy Exp $ (LBL)"; + "@(#) $Header: /tcpdump/master/libpcap/pcap-nit.c,v 1.41 2001/12/10 07:14:18 guy Exp $ (LBL)"; #endif #ifdef HAVE_CONFIG_H @@ -75,6 +75,22 @@ int pcap_stats(pcap_t *p, struct pcap_stat *ps) { + /* + * "ps_recv" counts packets handed to the filter, not packets + * that passed the filter. As filtering is done in userland, + * this does not include packets dropped because we ran out + * of buffer space. + * + * "ps_drop" presumably counts packets dropped by the socket + * because of flow control requirements or resource exhaustion; + * it doesn't count packets dropped by the interface driver. + * As filtering is done in userland, it counts packets regardless + * of whether they would've passed the filter. + * + * These statistics don't include packets not yet read from the + * kernel by libpcap or packets not yet read from libpcap by the + * application. + */ *ps = p->md.stat; return (0); } |
