diff options
| author | Michal Sekletar <[email protected]> | 2015-03-24 14:48:41 +0100 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2015-03-24 15:25:15 -0400 |
| commit | 27cd5452476978283decb19e429e81fc6c71e74b (patch) | |
| tree | a147d4576190e18580589e6faaf08e1b7050ef2d /include/uapi/linux | |
| parent | f6bb76cd4d8552bada1e454c291419f893e1af7b (diff) | |
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 <[email protected]>
Cc: Alexei Starovoitov <[email protected]>
Cc: Jiri Pirko <[email protected]>
Signed-off-by: Michal Sekletar <[email protected]>
Acked-by: Daniel Borkmann <[email protected]>
Acked-by: Alexei Starovoitov <[email protected]>
Reviewed-by: Jiri Pirko <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'include/uapi/linux')
| -rw-r--r-- | include/uapi/linux/bpf.h | 1 | ||||
| -rw-r--r-- | include/uapi/linux/filter.h | 3 |
2 files changed, 3 insertions, 1 deletions
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index 3dd314a45d0d..27dc4ec58840 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -182,6 +182,7 @@ struct __sk_buff { __u32 protocol; __u32 vlan_present; __u32 vlan_tci; + __u32 vlan_proto; }; #endif /* _UAPI__LINUX_BPF_H__ */ diff --git a/include/uapi/linux/filter.h b/include/uapi/linux/filter.h index 47785d5ecf17..34c7936ca114 100644 --- a/include/uapi/linux/filter.h +++ b/include/uapi/linux/filter.h @@ -77,7 +77,8 @@ struct sock_fprog { /* Required for SO_ATTACH_FILTER. */ #define SKF_AD_VLAN_TAG_PRESENT 48 #define SKF_AD_PAY_OFFSET 52 #define SKF_AD_RANDOM 56 -#define SKF_AD_MAX 60 +#define SKF_AD_VLAN_TPID 60 +#define SKF_AD_MAX 64 #define SKF_NET_OFF (-0x100000) #define SKF_LL_OFF (-0x200000) |