• Jiri Benc's avatar
    gre: do not keep the GRE header around in collect medata mode · e271c7b4
    Jiri Benc authored
    For ipgre interface in collect metadata mode, it doesn't make sense for the
    interface to be of ARPHRD_IPGRE type. The outer header of received packets
    is not needed, as all the information from it is present in metadata_dst. We
    already don't set ipgre_header_ops for collect metadata interfaces, which is
    the only consumer of mac_header pointing to the outer IP header.
    
    Just set the interface type to ARPHRD_NONE in collect metadata mode for
    ipgre (not gretap, that still correctly stays ARPHRD_ETHER) and reset
    mac_header.
    
    Fixes: a64b04d8 ("gre: do not assign header_ops in collect metadata mode")
    Fixes: 2e15ea39 ("ip_gre: Add support to collect tunnel metadata.")
    Signed-off-by: default avatarJiri Benc <jbenc@redhat.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    e271c7b4
ip_gre.c 34.7 KB