Merge tag 'drm-intel-next-fixes-2015-04-25' of git://anongit.freedesktop.org/drm...
[linux-2.6-block.git] / samples / bpf / sockex1_kern.c
CommitLineData
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
7struct 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
14SEC("socket1")
614cd3bd 15int 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}
29char _license[] SEC("license") = "GPL";