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| author |   Michal Sekletar <msekleta@redhat.com> | 2015-03-24 14:48:41 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-03-24 15:25:15 -0400 |
| commit | 27cd5452476978283decb19e429e81fc6c71e74b (patch) | |
| tree | a147d4576190e18580589e6faaf08e1b7050ef2d /tools/net/bpf_exp.l | |
| parent | Merge branch 'cxgb4-fcoe' (diff) | |
| download | linux-dev-27cd5452476978283decb19e429e81fc6c71e74b.tar.xz linux-dev-27cd5452476978283decb19e429e81fc6c71e74b.zip | |
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>
Diffstat (limited to 'tools/net/bpf_exp.l')
| -rw-r--r-- | tools/net/bpf_exp.l | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/net/bpf_exp.l b/tools/net/bpf_exp.l index 833a96611da6..c83af3fb77de 100644 --- a/tools/net/bpf_exp.l +++ b/tools/net/bpf_exp.l @@ -92,6 +92,8 @@ extern void yyerror(const char *str); "#"?("cpu") { return K_CPU; } "#"?("vlan_tci") { return K_VLANT; } "#"?("vlan_pr") { return K_VLANP; } +"#"?("vlan_avail") { return K_VLANP; } +"#"?("vlan_tpid") { return K_VLANTPID; } "#"?("rand") { return K_RAND; } ":" { return ':'; } |