Dear Fulvio I wanna know if your linux box ethernets are 1000 or 100 ? and are you sure about kernels < 2.6.15 that large tagged packets correctly forward ? Regards KasrA bridge-request at lists.osdl.org wrote: Send Bridge mailing list submissions to bridge at lists.osdl.org To subscribe or unsubscribe via the World Wide Web, visit https://lists.osdl.org/mailman/listinfo/bridge or, via email, send a message with subject or body 'help' to bridge-request at lists.osdl.org You can reach the person managing the list at bridge-owner at lists.osdl.org When replying, please edit your Subject line so it is more specific than "Re: Contents of Bridge digest..." Today's Topics: 1. Passing vlan tagged packets through linux bridge (Fulvio Ricciardi) 2. Re: Passing vlan tagged packets through linux bridge (Stephen Hemminger) ---------------------------------------------------------------------- Message: 1 Date: Fri, 01 Dec 2006 18:09:14 +0100 From: "Fulvio Ricciardi" Subject: [Bridge] Passing vlan tagged packets through linux bridge To: bridge at lists.osdl.org Message-ID: <457061ba.3a6.7c77.1170958095 at webmailh3.aruba.it> Content-Type: text/plain; charset="iso-8859-1" > Use an Intel pro/100 or pro/1000 driver..they are known to > work with VLANs. > > I guess it's also possible that it's a problem in the > bridging code, so try the latest kernel > as well... I compiled the latest 2.6.19 kernel and tested it with two 3COM 3c905c fast ethernet interfaces which work fine with vlan 802.1q tagging, but when I have added the eth0 and eth1 to br0 the bridge doesn't forward tagged packets larger than 1472 bytes. I remember that with older kernels (<2.6.15) large tagged packets was forwarded. What is the problem? Any chance to have a patch? Thanks in advance for your answers. Best Regards Fulvio Ricciardi -------------------------------------------------------------------- Fulvio Ricciardi web: http://www.zeroshell.net/eng/ skype: zeroshellnet Phone: +3908321835630 ------------------------------ Message: 2 Date: Fri, 1 Dec 2006 10:29:24 -0800 From: Stephen Hemminger Subject: Re: [Bridge] Passing vlan tagged packets through linux bridge To: fulvio.ricciardi at zeroshell.net Cc: bridge at lists.osdl.org Message-ID: <20061201102924.7e1045d2 at freekitty> Content-Type: text/plain; charset=US-ASCII On Fri, 01 Dec 2006 18:09:14 +0100 "Fulvio Ricciardi" wrote: > > Use an Intel pro/100 or pro/1000 driver..they are known to > > work with VLANs. > > > > I guess it's also possible that it's a problem in the > > bridging code, so try the latest kernel > > as well... > > I compiled the latest 2.6.19 kernel and tested it with two > 3COM 3c905c fast ethernet interfaces which work fine with > vlan 802.1q tagging, but when I have added the eth0 and eth1 > to br0 the bridge doesn't forward tagged packets larger than > 1472 bytes. I remember that with older kernels (<2.6.15) > large tagged packets was forwarded. > What is the problem? Any chance to have a patch? > Thanks in advance for your answers. > Best Regards > Fulvio Ricciardi > This code might be dropping it, but don't see why because it is already checking for VLAN net/bridge/br_forward.c static inline unsigned packet_length(const struct sk_buff *skb) { return skb->len - (skb->protocol == htons(ETH_P_8021Q) ? VLAN_HLEN : 0); } int br_dev_queue_push_xmit(struct sk_buff *skb) { /* drop mtu oversized packets except gso */ if (packet_length(skb) > skb->dev->mtu && !skb_is_gso(skb)) kfree_skb(skb); -- Stephen Hemminger ------------------------------ _______________________________________________ Bridge mailing list Bridge at lists.osdl.org https://lists.osdl.org/mailman/listinfo/bridge End of Bridge Digest, Vol 40, Issue 1 ************************************* --------------------------------- Need a quick answer? Get one in minutes from people who know. Ask your question on Yahoo! Answers. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.osdl.org/pipermail/bridge/attachments/20061201/7e328524/attachment.htm
