Messages in this thread | | | Date | Wed, 31 Oct 2007 12:33:59 -0700 | From | Stephen Hemminger <> | Subject | Re: expected behavior of PF_PACKET on NETIF_F_HW_VLAN_RX device? |
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On Wed, 31 Oct 2007 14:43:51 -0400 Dave Johnson <djohnson+linux-kernel@sw.starentnetworks.com> wrote:
> > Depending on the network driver, I'm seeing different behavior if > a .1q packet is received to an PF_PACKET, SOCK_RAW, ETH_P_ALL socket. > > > On devices what do not use NETIF_F_HW_VLAN_RX, the packet socket gets > the complete packet with vlan tag included as the driver simply calls > netif_receive_skb() or equivilant. packet_rcv() then gets the whole > thing vlan tag included and sends this through the socket. > > vlan_skb_recv() also gets these all and will drop them because there > are no vlans configured. >
The VLAN acceleration grabs and hides the tag. It is a design flaw that should be fixed, feel free to post a patch.
-- Stephen Hemminger <shemminger@linux-foundation.org> - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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