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Alexei Starovoitov fbe3310840 samples: bpf: large eBPF program in C ... sockex2_kern.c is purposefully large eBPF program in C. llvm compiles ~200 lines of C code into ~300 eBPF instructions. It's similar to __skb_flow_dissect() to demonstrate that complex packet parsing can be done by eBPF. Then it uses (struct flow_keys)->dst IP address (or hash of ipv6 dst) to keep stats of number of packets per IP. User space loads eBPF program, attaches it to loopback interface and prints dest_ip->#packets stats every second. Usage: $sudo samples/bpf/sockex2 ip 127.0.0.1 count 19 ip 127.0.0.1 count 178115 ip 127.0.0.1 count 369437 ip 127.0.0.1 count 559841 ip 127.0.0.1 count 750539 Signed-off-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>		10 years ago
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Makefile	samples: bpf: large eBPF program in C	10 years ago
bpf_helpers.h	samples: bpf: elf_bpf file loader	10 years ago
bpf_load.c	samples: bpf: elf_bpf file loader	10 years ago
bpf_load.h	samples: bpf: elf_bpf file loader	10 years ago
libbpf.c	samples: bpf: example of stateful socket filtering	10 years ago
libbpf.h	samples: bpf: trivial eBPF program in C	10 years ago
sock_example.c	samples: bpf: example of stateful socket filtering	10 years ago
sockex1_kern.c	samples: bpf: trivial eBPF program in C	10 years ago
sockex1_user.c	samples: bpf: trivial eBPF program in C	10 years ago
sockex2_kern.c	samples: bpf: large eBPF program in C	10 years ago
sockex2_user.c	samples: bpf: large eBPF program in C	10 years ago
test_maps.c	bpf: add a testsuite for eBPF maps	10 years ago
test_verifier.c	bpf: remove test map scaffolding and user proper types	10 years ago