pcap: support for various linktypes

Add a device_type() method to get the assigned dev->type from the
kernel, and add support for automatic selection of the correct pcap
file header's linktype. This needs to be integrated into the core
code though.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/dev.h b/dev.h
index cebcee4..87751c6 100644
--- a/dev.h
+++ b/dev.h
@@ -7,6 +7,7 @@
 extern int device_mtu(const char *ifname);
 extern int device_address(const char *ifname, int af, struct sockaddr_storage *ss);
 extern int device_ifindex(const char *ifname);
+extern int device_type(const char *ifname);
 extern short device_get_flags(const char *ifname);
 extern void device_set_flags(const char *ifname, const short flags);
 extern int device_up_and_running(char *ifname);