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| author | Chenbo Feng | 2017-03-23 01:27:36 +0100 |
|---|---|---|
| committer | David S. Miller | 2017-03-24 01:01:57 +0100 |
| commit | 51570a5ab2b74a1b929e5a6c25b4df93652ac0aa (patch) | |
| tree | 7739a3fff6681e52e7805b0d7eae39c0d2d99c68 /samples/bpf/libbpf.h | |
| parent | Add a eBPF helper function to retrieve socket uid (diff) | |
| download | kernel-qcow2-linux-51570a5ab2b74a1b929e5a6c25b4df93652ac0aa.tar.gz kernel-qcow2-linux-51570a5ab2b74a1b929e5a6c25b4df93652ac0aa.tar.xz kernel-qcow2-linux-51570a5ab2b74a1b929e5a6c25b4df93652ac0aa.zip | |
A Sample of using socket cookie and uid for traffic monitoring
Add a sample program to demostrate the possible usage of
get_socket_cookie and get_socket_uid helper function. The program will
store bytes and packets counting of in/out traffic monitored by iptables
and store the stats in a bpf map in per socket base. The owner uid of
the socket will be stored as part of the data entry. A shell script for
running the program is also included.
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Chenbo Feng <fengc@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'samples/bpf/libbpf.h')
| -rw-r--r-- | samples/bpf/libbpf.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/samples/bpf/libbpf.h b/samples/bpf/libbpf.h index 3705fba453a0..8ab36a04c174 100644 --- a/samples/bpf/libbpf.h +++ b/samples/bpf/libbpf.h @@ -135,6 +135,16 @@ struct bpf_insn; .off = OFF, \ .imm = 0 }) +/* Atomic memory add, *(uint *)(dst_reg + off16) += src_reg */ + +#define BPF_STX_XADD(SIZE, DST, SRC, OFF) \ + ((struct bpf_insn) { \ + .code = BPF_STX | BPF_SIZE(SIZE) | BPF_XADD, \ + .dst_reg = DST, \ + .src_reg = SRC, \ + .off = OFF, \ + .imm = 0 }) + /* Memory store, *(uint *) (dst_reg + off16) = imm32 */ #define BPF_ST_MEM(SIZE, DST, OFF, IMM) \ |