Before doing this change wireshark was showing the inner packet as "malformed" as it uses the ethernet's type field to classify the L3 packets as IPv6, IPv4 and so on. The problem is when the inner packet is reinserted into Linux stack and the ethernet header keeps holding on its type field a value for the protocol of outer packet. Below my correction on file net/xfrm/xfrm_input.c, function xfrm_prepare_input: ... skb->protocol = inner_mode->afinfo->eth_proto; // existing code eth_hdr(skb)->h_proto = skb->protocol; // my change, adding this line ... Regards, Eduardo Panisset.
(switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). On Fri, 2 Apr 2010 18:17:07 GMT bugzilla-daemon@bugzilla.kernel.org wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=15683 > > Summary: XFRM IS NOT UPDATING ETH TYPE FIELD FOR INNER PACKET > ON ETH > Product: Networking > Version: 2.5 > Kernel Version: 2.6.28-2 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: Other > AssignedTo: acme@ghostprotocols.net > ReportedBy: eduardo.panisset@gmail.com > Regression: No > > > Before doing this change wireshark was showing the inner packet as > "malformed" as it uses the ethernet's type field to classify the L3 > packets as IPv6, IPv4 and so on. > The problem is when the inner packet is reinserted into Linux stack > and the ethernet header keeps holding on its type field a value for > the protocol of outer packet. > > Below my correction on file net/xfrm/xfrm_input.c, function > xfrm_prepare_input: > > ... > > skb->protocol = inner_mode->afinfo->eth_proto; // existing code > eth_hdr(skb)->h_proto = skb->protocol; // my change, adding this line > > ... >
(resend - I forgot to cc Eduardo) (switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). On Fri, 2 Apr 2010 18:17:07 GMT bugzilla-daemon@bugzilla.kernel.org wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=15683 > > Summary: XFRM IS NOT UPDATING ETH TYPE FIELD FOR INNER PACKET > ON ETH > Product: Networking > Version: 2.5 > Kernel Version: 2.6.28-2 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: Other > AssignedTo: acme@ghostprotocols.net > ReportedBy: eduardo.panisset@gmail.com > Regression: No > > > Before doing this change wireshark was showing the inner packet as > "malformed" as it uses the ethernet's type field to classify the L3 > packets as IPv6, IPv4 and so on. > The problem is when the inner packet is reinserted into Linux stack > and the ethernet header keeps holding on its type field a value for > the protocol of outer packet. > > Below my correction on file net/xfrm/xfrm_input.c, function > xfrm_prepare_input: > > ... > > skb->protocol = inner_mode->afinfo->eth_proto; // existing code > eth_hdr(skb)->h_proto = skb->protocol; // my change, adding this line > > ... >