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authorMichal Sekletar <msekleta@redhat.com>2015-03-24 14:48:41 +0100
committerDavid S. Miller <davem@davemloft.net>2015-03-24 15:25:15 -0400
commit27cd5452476978283decb19e429e81fc6c71e74b (patch)
treea147d4576190e18580589e6faaf08e1b7050ef2d /.mailmap
parentf6bb76cd4d8552bada1e454c291419f893e1af7b (diff)
downloadop-kernel-dev-27cd5452476978283decb19e429e81fc6c71e74b.zip
op-kernel-dev-27cd5452476978283decb19e429e81fc6c71e74b.tar.gz
filter: introduce SKF_AD_VLAN_TPID BPF extension
If vlan offloading takes place then vlan header is removed from frame and its contents, both vlan_tci and vlan_proto, is available to user space via TPACKET interface. However, only vlan_tci can be used in BPF filters. This commit introduces a new BPF extension. It makes possible to load the value of vlan_proto (vlan TPID) to register A. Support for classic BPF and eBPF is being added, analogous to skb->protocol. Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Alexei Starovoitov <ast@plumgrid.com> Cc: Jiri Pirko <jpirko@redhat.com> Signed-off-by: Michal Sekletar <msekleta@redhat.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Reviewed-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
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