diff options
| author | guy <guy> | 2008-07-01 08:02:33 +0000 |
|---|---|---|
| committer | guy <guy> | 2008-07-01 08:02:33 +0000 |
| commit | 34624f128f2e6f937c04317fdd2c0ae6d8883ad5 (patch) | |
| tree | df708730b36c2a96e7ee94c7b926d4d5bf4d6e64 /pcap | |
| parent | a8e63c60ed4d25d27c890ecab14e1a831dbeb198 (diff) | |
When activating a device, return PCAP_ERROR_IFACE_NOT_UP if the device
isn't up, so applications can report that differently from a generic
error (the latter could mean there's a bug somewhere in libpcap).
When capturing on a device without mmap on Linux, ignore ENETDOWN, so
that we can continue to capture traffic if the interface goes down and
comes back up again; comments in the kernel indicate that we'll just
block waiting for packets if we try to receive from a socket that
delivered ENETDOWN, and, if we're using a memory-mapped buffer, we won't
even get notified of "network down" events.
Diffstat (limited to 'pcap')
| -rw-r--r-- | pcap/pcap.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/pcap/pcap.h b/pcap/pcap.h index c7bc8a0..2175308 100644 --- a/pcap/pcap.h +++ b/pcap/pcap.h @@ -31,7 +31,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * @(#) $Header: /tcpdump/master/libpcap/pcap/pcap.h,v 1.13 2008-05-30 01:35:33 guy Exp $ (LBL) + * @(#) $Header: /tcpdump/master/libpcap/pcap/pcap.h,v 1.14 2008-07-01 08:02:33 guy Exp $ (LBL) */ #ifndef lib_pcap_pcap_h @@ -243,6 +243,7 @@ typedef void (*pcap_handler)(u_char *, const struct pcap_pkthdr *, #define PCAP_ERROR_RFMON_NOTSUP -6 /* this device doesn't support rfmon (monitor) mode */ #define PCAP_ERROR_NOT_RFMON -7 /* operation supported only in monitor mode */ #define PCAP_ERROR_PERM_DENIED -8 /* no permission to open the device */ +#define PCAP_ERROR_IFACE_NOT_UP -9 /* interface isn't up */ /* * Warning codes for the pcap API. |