diff options
| author | Stanislav Fomichev <[email protected]> | 2020-12-02 09:25:16 -0800 |
|---|---|---|
| committer | Alexei Starovoitov <[email protected]> | 2020-12-02 13:25:11 -0800 |
| commit | a540c81a2bcb95227c3e24a4478956824858a6b0 (patch) | |
| tree | 735cc1abe156fcd9e5c9edb3cf4b62ffd873ba31 /tools/testing/selftests/bpf/progs/bind4_prog.c | |
| parent | 427167c0b064ed898b848209add62b4322ec7840 (diff) | |
selftests/bpf: Extend bind{4,6} programs with a call to bpf_setsockopt
To make sure it doesn't trigger sock_owned_by_me splat.
Signed-off-by: Stanislav Fomichev <[email protected]>
Signed-off-by: Alexei Starovoitov <[email protected]>
Acked-by: Andrii Nakryiko <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
Diffstat (limited to 'tools/testing/selftests/bpf/progs/bind4_prog.c')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/bind4_prog.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/bind4_prog.c b/tools/testing/selftests/bpf/progs/bind4_prog.c index 0951302a984a..c6520f21f5f5 100644 --- a/tools/testing/selftests/bpf/progs/bind4_prog.c +++ b/tools/testing/selftests/bpf/progs/bind4_prog.c @@ -19,6 +19,33 @@ #define SERV4_REWRITE_IP 0x7f000001U /* 127.0.0.1 */ #define SERV4_REWRITE_PORT 4444 +#ifndef IFNAMSIZ +#define IFNAMSIZ 16 +#endif + +static __inline int bind_to_device(struct bpf_sock_addr *ctx) +{ + char veth1[IFNAMSIZ] = "test_sock_addr1"; + char veth2[IFNAMSIZ] = "test_sock_addr2"; + char missing[IFNAMSIZ] = "nonexistent_dev"; + char del_bind[IFNAMSIZ] = ""; + + if (bpf_setsockopt(ctx, SOL_SOCKET, SO_BINDTODEVICE, + &veth1, sizeof(veth1))) + return 1; + if (bpf_setsockopt(ctx, SOL_SOCKET, SO_BINDTODEVICE, + &veth2, sizeof(veth2))) + return 1; + if (bpf_setsockopt(ctx, SOL_SOCKET, SO_BINDTODEVICE, + &missing, sizeof(missing)) != -ENODEV) + return 1; + if (bpf_setsockopt(ctx, SOL_SOCKET, SO_BINDTODEVICE, + &del_bind, sizeof(del_bind))) + return 1; + + return 0; +} + SEC("cgroup/bind4") int bind_v4_prog(struct bpf_sock_addr *ctx) { @@ -62,6 +89,10 @@ int bind_v4_prog(struct bpf_sock_addr *ctx) if (ctx->user_ip4 != user_ip4) return 0; + /* Bind to device and unbind it. */ + if (bind_to_device(ctx)) + return 0; + ctx->user_ip4 = bpf_htonl(SERV4_REWRITE_IP); ctx->user_port = bpf_htons(SERV4_REWRITE_PORT); |