netdev - Re: bpf filter : support for vlan tag

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 19 Oct 2012 11:32:10 -0700
From:	Ani Sinha <ani@...stanetworks.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Daniel Borkmann <danborkmann@...earbox.net>, netdev@...r.kernel.org
Subject: Re: bpf filter : support for vlan tag

how about this?

On Tue, Oct 16, 2012 at 4:28 AM, Eric Dumazet <eric.dumazet@...il.com> wrote:

> @@ -341,6 +342,12 @@ load_b:
>                 case BPF_S_ANC_CPU:
>                         A = raw_smp_processor_id();
>                         continue;
> +               case BPF_S_ANC_VLAN_TAG:
> +                       A = vlan_tx_tag_get(skb);
> +                       continue;
> +               case BPF_S_ANC_VLAN_TAG_PRESENT:
> +                       A = !!vlan_tx_tag_present(skb);
> +                       continue;
>                 case BPF_S_ANC_NLATTR: {
>                         struct nlattr *nla;


+               case BPF_S_ANC_VLAN_TAG:
+                       if (!vlan_tx_tag_present(skb)) {
+                               return 0;
+                       }
+                       A = vlan_tx_tag_get(skb);
+                       continue;
+               case BPF_S_ANC_VLAN_TAG_PRESENT :
+                       A = !! vlan_tx_tag_present(skb);
+                       continue;

Now, is there any particular reason we are not using clan_get_tag() api?

Thanks
ani
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html