Alexei Starovoitov a80857822b samples: bpf: trivial eBPF program in C ... this example does the same task as previous socket example in assembler, but this one does it in C. eBPF program in kernel does: /* assume that packet is IPv4, load one byte of IP->proto */ int index = load_byte(skb, ETH_HLEN + offsetof(struct iphdr, protocol)); long *value; value = bpf_map_lookup_elem(&my_map, &index); if (value) __sync_fetch_and_add(value, 1); Corresponding user space reads map[tcp], map[udp], map[icmp] and prints protocol stats every second Signed-off-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2014-12-05 21:47:33 -08:00
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bpf_helpers.h	samples: bpf: elf_bpf file loader	2014-12-05 21:47:33 -08:00
bpf_load.c	samples: bpf: elf_bpf file loader	2014-12-05 21:47:33 -08:00
bpf_load.h	samples: bpf: elf_bpf file loader	2014-12-05 21:47:33 -08:00
libbpf.c	samples: bpf: example of stateful socket filtering	2014-12-05 21:47:32 -08:00
libbpf.h	samples: bpf: trivial eBPF program in C	2014-12-05 21:47:33 -08:00
Makefile	samples: bpf: trivial eBPF program in C	2014-12-05 21:47:33 -08:00
sock_example.c	samples: bpf: example of stateful socket filtering	2014-12-05 21:47:32 -08:00
sockex1_kern.c	samples: bpf: trivial eBPF program in C	2014-12-05 21:47:33 -08:00
sockex1_user.c	samples: bpf: trivial eBPF program in C	2014-12-05 21:47:33 -08:00
test_maps.c	bpf: add a testsuite for eBPF maps	2014-11-18 13:43:59 -05:00
test_verifier.c	bpf: remove test map scaffolding and user proper types	2014-11-18 13:44:00 -05:00