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| author | John Fastabend <john.fastabend@gmail.com> | 2018-03-18 12:57:41 -0700 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2018-03-19 21:14:40 +0100 |
| commit | 4c4c3c276c099f265c8b11e0132ce826ee718e2c (patch) | |
| tree | ecd85d08aa7f5d2936ed7414304491a7892a4a94 /tools | |
| parent | 1acc60b6a41bd4e43c3cb10e5395a5c812e158f5 (diff) | |
| download | linux-0-day-4c4c3c276c099f265c8b11e0132ce826ee718e2c.tar.gz linux-0-day-4c4c3c276c099f265c8b11e0132ce826ee718e2c.tar.xz | |
bpf: sockmap sample, add option to attach SK_MSG program
Add sockmap option to use SK_MSG program types.
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/include/uapi/linux/bpf.h | 13 | ||||
| -rw-r--r-- | tools/lib/bpf/libbpf.c | 1 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/bpf_helpers.h | 3 |
3 files changed, 16 insertions, 1 deletions
diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h index 13d9c59d79ced..01b9c97b172eb 100644 --- a/tools/include/uapi/linux/bpf.h +++ b/tools/include/uapi/linux/bpf.h @@ -720,6 +720,15 @@ union bpf_attr { * int bpf_override_return(pt_regs, rc) * @pt_regs: pointer to struct pt_regs * @rc: the return value to set + * + * int bpf_msg_redirect_map(map, key, flags) + * Redirect msg to a sock in map using key as a lookup key for the + * sock in map. + * @map: pointer to sockmap + * @key: key to lookup sock in map + * @flags: reserved for future use + * Return: SK_PASS + * */ #define __BPF_FUNC_MAPPER(FN) \ FN(unspec), \ @@ -781,7 +790,9 @@ union bpf_attr { FN(perf_prog_read_value), \ FN(getsockopt), \ FN(override_return), \ - FN(sock_ops_cb_flags_set), + FN(sock_ops_cb_flags_set), \ + FN(msg_redirect_map), \ + FN(msg_apply_bytes), /* integer value in 'imm' field of BPF_CALL instruction selects which helper * function eBPF program intends to call diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index 5bbbf285af74a..64a8fc3841861 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -1857,6 +1857,7 @@ static const struct { BPF_PROG_SEC("lwt_xmit", BPF_PROG_TYPE_LWT_XMIT), BPF_PROG_SEC("sockops", BPF_PROG_TYPE_SOCK_OPS), BPF_PROG_SEC("sk_skb", BPF_PROG_TYPE_SK_SKB), + BPF_PROG_SEC("sk_msg", BPF_PROG_TYPE_SK_MSG), }; #undef BPF_PROG_SEC diff --git a/tools/testing/selftests/bpf/bpf_helpers.h b/tools/testing/selftests/bpf/bpf_helpers.h index 1558fe8bcf3ea..bba7ee6d93ab7 100644 --- a/tools/testing/selftests/bpf/bpf_helpers.h +++ b/tools/testing/selftests/bpf/bpf_helpers.h @@ -86,6 +86,9 @@ static int (*bpf_perf_prog_read_value)(void *ctx, void *buf, (void *) BPF_FUNC_perf_prog_read_value; static int (*bpf_override_return)(void *ctx, unsigned long rc) = (void *) BPF_FUNC_override_return; +static int (*bpf_msg_redirect_map)(void *ctx, void *map, int key, int flags) = + (void *) BPF_FUNC_msg_redirect_map; + /* llvm builtin functions that eBPF C program may use to * emit BPF_LD_ABS and BPF_LD_IND instructions |