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o [libpcap] Added a --disable-packet-ring option to force the use of

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an older, slower packet capture mechanism on Linux. Before Linux
  2.6.27, the packet ring mechanism uses different-sized kernel
  structures on 32- and 64-bit architectures, so a 32-bit program will
  not run correctly on a 64-bit kernel. The older mechanism does not
  have this flaw.
This commit is contained in:
david
2010-05-26 20:43:09 +00:00
parent 1fe9546cfc
commit 38019ded5c
6 changed files with 127 additions and 11 deletions
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24
libpcap/pcap-linux.c
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@@ -232,17 +232,19 @@ static const char rcsid[] _U_ =
# endif /* PACKET_HOST */
/* check for memory mapped access avaibility. We assume every needed
* struct is defined if the macro TPACKET_HDRLEN is defined, because it
* uses many ring related structs and macros */
# ifdef TPACKET_HDRLEN
# define HAVE_PACKET_RING
# ifdef TPACKET2_HDRLEN
# define HAVE_TPACKET2
# else
# define TPACKET_V1 0
# endif /* TPACKET2_HDRLEN */
# endif /* TPACKET_HDRLEN */
# ifdef PCAP_SUPPORT_PACKET_RING
/* check for memory mapped access avaibility. We assume every needed
* struct is defined if the macro TPACKET_HDRLEN is defined, because it
* uses many ring related structs and macros */
# ifdef TPACKET_HDRLEN
# define HAVE_PACKET_RING
# ifdef TPACKET2_HDRLEN
# define HAVE_TPACKET2
# else
# define TPACKET_V1 0
# endif /* TPACKET2_HDRLEN */
# endif /* TPACKET_HDRLEN */
# endif /* PCAP_SUPPORT_PACKET_RING */
#endif /* PF_PACKET */
#ifdef SO_ATTACH_FILTER