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| author | Stanislav Fomichev <sdf@google.com> | 2021-01-27 15:28:50 -0800 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2021-01-29 02:09:05 +0100 |
| commit | 62476cc1bf24b34d9442c7ba76e5eb6bf242f911 (patch) | |
| tree | 2a81706fa27cea2f47c51f296eb07e9809f117fe /tools/testing/selftests/bpf/progs/sendmsg6_prog.c | |
| parent | 211a741cd3e124bffdc13ee82e7e65f204e53f60 (diff) | |
| download | linux-62476cc1bf24b34d9442c7ba76e5eb6bf242f911.tar.gz linux-62476cc1bf24b34d9442c7ba76e5eb6bf242f911.tar.bz2 linux-62476cc1bf24b34d9442c7ba76e5eb6bf242f911.zip | |
bpf: Enable bpf_{g,s}etsockopt in BPF_CGROUP_UDP{4,6}_SENDMSG
Can be used to query/modify socket state for unconnected UDP sendmsg.
Those hooks run as BPF_CGROUP_RUN_SA_PROG_LOCK and operate on
a locked socket.
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210127232853.3753823-2-sdf@google.com
Diffstat (limited to 'tools/testing/selftests/bpf/progs/sendmsg6_prog.c')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/sendmsg6_prog.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/sendmsg6_prog.c b/tools/testing/selftests/bpf/progs/sendmsg6_prog.c index 255a432bc163..24694b1a8d82 100644 --- a/tools/testing/selftests/bpf/progs/sendmsg6_prog.c +++ b/tools/testing/selftests/bpf/progs/sendmsg6_prog.c @@ -8,6 +8,8 @@ #include <bpf/bpf_helpers.h> #include <bpf/bpf_endian.h> +#include <bpf_sockopt_helpers.h> + #define SRC_REWRITE_IP6_0 0 #define SRC_REWRITE_IP6_1 0 #define SRC_REWRITE_IP6_2 0 @@ -28,6 +30,9 @@ int sendmsg_v6_prog(struct bpf_sock_addr *ctx) if (ctx->type != SOCK_DGRAM) return 0; + if (!get_set_sk_priority(ctx)) + return 0; + /* Rewrite source. */ if (ctx->msg_src_ip6[3] == bpf_htonl(1) || ctx->msg_src_ip6[3] == bpf_htonl(0)) { |