diff options
Diffstat (limited to 'samples/bpf/libbpf.h')
| -rw-r--r-- | samples/bpf/libbpf.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/samples/bpf/libbpf.h b/samples/bpf/libbpf.h index f8678e5f48bf..cc62ad4d95de 100644 --- a/samples/bpf/libbpf.h +++ b/samples/bpf/libbpf.h @@ -99,6 +99,16 @@ extern char bpf_log_buf[LOG_BUF_SIZE]; BPF_LD_IMM64_RAW(DST, BPF_PSEUDO_MAP_FD, MAP_FD) +/* Direct packet access, R0 = *(uint *) (skb->data + imm32) */ + +#define BPF_LD_ABS(SIZE, IMM) \ + ((struct bpf_insn) { \ + .code = BPF_LD | BPF_SIZE(SIZE) | BPF_ABS, \ + .dst_reg = 0, \ + .src_reg = 0, \ + .off = 0, \ + .imm = IMM }) + /* Memory load, dst_reg = *(uint *) (src_reg + off16) */ #define BPF_LDX_MEM(SIZE, DST, SRC, OFF) \ @@ -169,4 +179,7 @@ extern char bpf_log_buf[LOG_BUF_SIZE]; .off = 0, \ .imm = 0 }) +/* create RAW socket and bind to interface 'name' */ +int open_raw_sock(const char *name); + #endif |