projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| a8085782 AS |
1 | #include <uapi/linux/bpf.h> |
| 2 | #include <uapi/linux/if_ether.h> | |
| 614cd3bd | 3 | #include <uapi/linux/if_packet.h> |
| a8085782 AS |
4 | #include <uapi/linux/ip.h> |
| 5 | #include "bpf_helpers.h" | |
| 6 | ||
| 7 | struct bpf_map_def SEC("maps") my_map = { | |
| 8 | .type = BPF_MAP_TYPE_ARRAY, | |
| 9 | .key_size = sizeof(u32), | |
| 10 | .value_size = sizeof(long), | |
| 11 | .max_entries = 256, | |
| 12 | }; | |
| 13 | ||
| 14 | SEC("socket1") | |
| 614cd3bd | 15 | int bpf_prog1(struct __sk_buff *skb) |
| a8085782 AS |
16 | { |
| 17 | int index = load_byte(skb, ETH_HLEN + offsetof(struct iphdr, protocol)); | |
| 18 | long *value; | |
| 19 | ||
| 614cd3bd AS |
20 | if (skb->pkt_type != PACKET_OUTGOING) |
| 21 | return 0; | |
| 22 | ||
| a8085782 AS |
23 | value = bpf_map_lookup_elem(&my_map, &index); |
| 24 | if (value) | |
| 614cd3bd | 25 | __sync_fetch_and_add(value, skb->len); |
| a8085782 AS |
26 | |
| 27 | return 0; | |
| 28 | } | |
| 29 | char _license[] SEC("license") = "GPL"; |