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Allow libpcap buffer size to be set manually.

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This commit is contained in:
Kris Nielander 2015-08-09 22:08:46 +02:00
parent 4c2aa804e1
commit f5429ee794
6 changed files with 62 additions and 2 deletions
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46
src/iosource/pcap/Source.cc
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@ -89,11 +89,53 @@ void PcapSource::OpenLive()
// broken on FreeBSD: even when select() indicates that we can read
// something, we may get nothing if the store buffer hasn't filled up
// yet.)
pd = pcap_open_live(props.path.c_str(), SnapLen(), 1, 1, tmp_errbuf);
pd = pcap_create(props.path.c_str(), errbuf);
if ( ! pd )
{
Error(tmp_errbuf);
safe_snprintf(errbuf, sizeof(errbuf),
"pcap_create: %s", pcap_geterr(pd));
Error(errbuf);
return;
}
if ( pcap_set_snaplen(pd, SnapLen()) )
{
safe_snprintf(errbuf, sizeof(errbuf),
"pcap_set_snaplen: %s", pcap_geterr(pd));
Error(errbuf);
return;
}
if ( pcap_set_promisc(pd, 1) )
{
safe_snprintf(errbuf, sizeof(errbuf),
"pcap_set_promisc: %s", pcap_geterr(pd));
Error(errbuf);
return;
}
if ( pcap_set_timeout(pd, 1) )
{
safe_snprintf(errbuf, sizeof(errbuf),
"pcap_set_timeout: %s", pcap_geterr(pd));
Error(errbuf);
return;
}
if ( pcap_set_buffer_size(pd, BufSize()) )
{
safe_snprintf(errbuf, sizeof(errbuf),
"pcap_set_buffer_size: %s", pcap_geterr(pd));
Error(errbuf);
return;
}
if ( pcap_activate(pd) )
{
safe_snprintf(errbuf, sizeof(errbuf),
"pcap_activate: %s", pcap_geterr(pd));
Error(errbuf);
return;
}