tcpdump mailing list archives
Re: vlan tagged packets and libpcap breakage
From: Ani Sinha <ani () aristanetworks com>
Date: Tue, 11 Dec 2012 16:50:27 -0800
On Tue, Dec 11, 2012 at 3:04 PM, Eric Dumazet <eric.dumazet () gmail com> wrote:
On Tue, 2012-12-11 at 14:36 -0800, Ani Sinha wrote:It is possible to test for the presence of support of the new vlan bpf
If you want to test ANCILLARY possible values, its already too late, as old kernels wont use any patch anyway.
So basically this means that if we generate a filter with these special negative offset values and expect that the kernel will complain if it does not recognize the newer values then we would be wrong. And you are right. Old kernels never knew about them and the code wasn't written in a way to return EINVAL if it didn't recognize a special negative anciliary offset value. _______________________________________________ tcpdump-workers mailing list tcpdump-workers () lists tcpdump org https://lists.sandelman.ca/mailman/listinfo/tcpdump-workers
Current thread:
- Re: vlan tagged packets and libpcap breakage, (continued)
- Re: vlan tagged packets and libpcap breakage Ani Sinha (Dec 06)
- Re: vlan tagged packets and libpcap breakage Eric W. Biederman (Dec 06)
- Re: vlan tagged packets and libpcap breakage Ani Sinha (Dec 06)
- Re: vlan tagged packets and libpcap breakage Ani Sinha (Dec 06)
- Re: vlan tagged packets and libpcap breakage Eric W. Biederman (Dec 06)
- Re: vlan tagged packets and libpcap breakage Michael Richardson (Dec 06)
- Re: vlan tagged packets and libpcap breakage Ani Sinha (Dec 10)
- Re: vlan tagged packets and libpcap breakage Ani Sinha (Dec 11)
- Re: vlan tagged packets and libpcap breakage Eric Dumazet (Dec 13)
- Re: vlan tagged packets and libpcap breakage Ani Sinha (Dec 11)
- Re: vlan tagged packets and libpcap breakage Ani Sinha (Dec 11)
- Re: vlan tagged packets and libpcap breakage Stephen Hemminger (Dec 13)
- Message not available
- Re: vlan tagged packets and libpcap breakage Ani Sinha (Dec 12)
- Re: vlan tagged packets and libpcap breakage Ani Sinha (Dec 12)
- Re: vlan tagged packets and libpcap breakage Daniel Borkmann (Dec 13)
- Re: vlan tagged packets and libpcap breakage Ani Sinha (Dec 13)
- Re: vlan tagged packets and libpcap breakage Daniel Borkmann (Dec 13)
- Re: vlan tagged packets and libpcap breakage Ani Sinha (Dec 13)
- Re: vlan tagged packets and libpcap breakage David Laight (Dec 17)
- Re: vlan tagged packets and libpcap breakage Guy Harris (Dec 17)
- Re: vlan tagged packets and libpcap breakage Daniel Borkmann (Dec 17)