diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/filter.h | 16 | ||||
| -rw-r--r-- | include/uapi/linux/bpf.h | 2 |
2 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/filter.h b/include/linux/filter.h index 43aa1f8855c7..ec1411c89105 100644 --- a/include/linux/filter.h +++ b/include/linux/filter.h @@ -352,6 +352,22 @@ struct sk_filter { #define BPF_SKB_CB_LEN QDISC_CB_PRIV_LEN +struct bpf_skb_data_end { + struct qdisc_skb_cb qdisc_cb; + void *data_end; +}; + +/* compute the linear packet data range [data, data_end) which + * will be accessed by cls_bpf and act_bpf programs + */ +static inline void bpf_compute_data_end(struct sk_buff *skb) +{ + struct bpf_skb_data_end *cb = (struct bpf_skb_data_end *)skb->cb; + + BUILD_BUG_ON(sizeof(*cb) > FIELD_SIZEOF(struct sk_buff, cb)); + cb->data_end = skb->data + skb_headlen(skb); +} + static inline u8 *bpf_skb_cb(struct sk_buff *skb) { /* eBPF programs may read/write skb->cb[] area to transfer meta diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index b7b0fb1292e7..406459b935a2 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -370,6 +370,8 @@ struct __sk_buff { __u32 cb[5]; __u32 hash; __u32 tc_classid; + __u32 data; + __u32 data_end; }; struct bpf_tunnel_key { |