Searching for Libpcap Vlan Acceleration Support information? Find all needed info by using official links provided below.
https://seclists.org/tcpdump/2008/q3/26
[PATCH]: libpcap: VLAN acceleration support. From: Patrick McHardy <kaber trash net> Date: Wed, 16 Jul 2008 14:10:32 +0200. Currently libpcap can't properly deal with VLAN packets tagged or stripped by the hardware. On RX the packets are simply not visible at all (this is a pure kernel problem though), on TX without the VLAN tag. The upcoming ...
https://netoptimizer.blogspot.com/2010/09/tcpdump-vs-vlan-tags.html
In this post I will explain why tcpdump sometimes doesn't show the VLAN (802.1q) tags, when dumping network traffic. The issue is related to libpcap and VLAN hardware acceleration in the Linux kernel. Patrick McHardy, fixed the kernel in version 2.6.27, and also fixed libpcap.
https://seclists.org/tcpdump/2012/q4/31
vlan tagged packets and libpcap breakage. From: Ani Sinha <ani ... it's untagged in ptype_base hander and reinjected This incosistency is fixed by this patch. Vlan untagging happens early in __netif_receive_skb so the rest of code (ptype_all handlers, rx_handlers) see the skb like it was untagged by hw. ... with or without HW acceleration ...
https://seclists.org/tcpdump/2008/q3/date.html
[PATCH 00/04]: libpcap: VLAN acceleration support Patrick McHardy [PATCH 01/04]: pcap-linux: convert to recvmsg() Patrick McHardy [PATCH 04/04]: pcap-linux: reconstruct VLAN headers from tpacket2_hdr Patrick McHardy [PATCH 02/04]: pcap-linux: reconstruct VLAN header from PACKET_AUXDATA Patrick McHardy [PATCH 03/04]: pcap-linux: support new ...
https://github.com/the-tcpdump-group/libpcap/blob/master/pcap-linux.c
Oct 17, 2019 · the LIBpcap interface to various kernel packet capture mechanism - the-tcpdump-group/libpcap. Skip to content. ... Added PACKET_MMAP support * Paolo Abeni <[email protected]> ... * VLAN tag and packets on VLAN 0, so we will mishandle some packets, and ...
https://seclists.org/tcpdump/2012/q4/33
Ani> remove "inline" from vlan_core.c functions Ani> Signed-off-by: David S. Miller <davem davemloft net> Ani> As a result of this patch, with or without HW acceleration support in Ani> the kernel driver, the vlan tag information is pulled out from the Ani> packet and is inserted in the skb metadata. ... vlan tagged packets and libpcap breakage ...
https://seclists.org/tcpdump/2008/q3/index.html
Re: [PATCH 02/04]: pcap-linux: reconstruct VLAN header from PACKET_AUXDATA Guy Harris (Aug 06) [PATCH 03/04]: pcap-linux: support new tpacket frame header format Patrick McHardy (Jul 18) Re: [PATCH 03/04]: pcap-linux: support new tpacket frame header format Guy Harris (Aug 06) Re: [PATCH 00/04]: libpcap: VLAN acceleration support Guy Harris ...
https://serverfault.com/questions/544651/vlan-tags-not-shown-in-packet-capture-linux-via-tcpdump
VLAN tags not shown in packet capture (Linux) via tcpdump. Ask Question ... It simply might be some libpcap quirk with the way VLAN interfaces are implemented for ip link. – the ... You can't see VLAN tag from tcpdump -i eth0 output on i686/x86_64 architecture because of VLAN acceleration. the VLAN layer will be filtered by kernel so it ...
https://stackoverflow.com/questions/31136182/libpcap-filter-strings-using-vlan-are-behaving-weirdly
Jul 01, 2015 · I am getting some weird errors when using libpcap pcap_compile Please let me know if these are known issues or I am making some bpf formating/ordering mistakes For example: 1) if I pass ... Libpcap filter strings using “vlan” are behaving weirdly. ... That's another libpcap bug - just as "vlan", ...
https://bugzilla.redhat.com/show_bug.cgi?id=498981
Bug 498981 - tcpdump cannot deal with 802.1q vlan tag. Summary: ... looks like this is caused by VLAN acceleration. In libpcap it's supported since version 1.0.0, but it needs to be supported also in kernel. ... reconstruct vlan headers This is a backport of patches by Patrick McHardy from libpcap git. It requires tp_vlan_tci in kernel's ...
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