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authorChenbo Feng <fengc@google.com>2017-03-22 17:27:36 -0700
committerDavid S. Miller <davem@davemloft.net>2017-03-23 17:01:57 -0700
commit51570a5ab2b74a1b929e5a6c25b4df93652ac0aa (patch)
tree7739a3fff6681e52e7805b0d7eae39c0d2d99c68 /samples/bpf/libbpf.h
parent6acc5c2910689fc6ee181bf63085c5efff6a42bd (diff)
downloadop-kernel-dev-51570a5ab2b74a1b929e5a6c25b4df93652ac0aa.zip
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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.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/samples/bpf/libbpf.h b/samples/bpf/libbpf.h
index 3705fba..8ab36a0 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) \
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