diff options
| author |   Yonghong Song <yhs@fb.com> | 2020-06-23 16:08:11 -0700 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2020-06-24 18:37:59 -0700 |
| commit | 478cfbdf5f13dfe09cfd0b1cbac821f5e27f6108 (patch) | |
| tree | febcb078fe63001ae8c004f218e9ff1acc2a68e2 /include | |
| parent | bpf: Add bpf_skc_to_tcp6_sock() helper (diff) | |
| download | linux-dev-478cfbdf5f13dfe09cfd0b1cbac821f5e27f6108.tar.xz linux-dev-478cfbdf5f13dfe09cfd0b1cbac821f5e27f6108.zip | |
bpf: Add bpf_skc_to_{tcp, tcp_timewait, tcp_request}_sock() helpers
Three more helpers are added to cast a sock_common pointer to
an tcp_sock, tcp_timewait_sock or a tcp_request_sock for
tracing programs.
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20200623230811.3988277-1-yhs@fb.com
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/bpf.h | 3 | ||||
| -rw-r--r-- | include/uapi/linux/bpf.h | 23 |
2 files changed, 25 insertions, 1 deletions
diff --git a/include/linux/bpf.h b/include/linux/bpf.h index c0e38ad07848..c23998cf6699 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -1650,6 +1650,9 @@ extern const struct bpf_func_proto bpf_ringbuf_submit_proto; extern const struct bpf_func_proto bpf_ringbuf_discard_proto; extern const struct bpf_func_proto bpf_ringbuf_query_proto; extern const struct bpf_func_proto bpf_skc_to_tcp6_sock_proto; +extern const struct bpf_func_proto bpf_skc_to_tcp_sock_proto; +extern const struct bpf_func_proto bpf_skc_to_tcp_timewait_sock_proto; +extern const struct bpf_func_proto bpf_skc_to_tcp_request_sock_proto; const struct bpf_func_proto *bpf_tracing_func_proto( enum bpf_func_id func_id, const struct bpf_prog *prog); diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index e90ad07b291a..b9412ab275f3 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -3261,6 +3261,24 @@ union bpf_attr { * Dynamically cast a *sk* pointer to a *tcp6_sock* pointer. * Return * *sk* if casting is valid, or NULL otherwise. + * + * struct tcp_sock *bpf_skc_to_tcp_sock(void *sk) + * Description + * Dynamically cast a *sk* pointer to a *tcp_sock* pointer. + * Return + * *sk* if casting is valid, or NULL otherwise. + * + * struct tcp_timewait_sock *bpf_skc_to_tcp_timewait_sock(void *sk) + * Description + * Dynamically cast a *sk* pointer to a *tcp_timewait_sock* pointer. + * Return + * *sk* if casting is valid, or NULL otherwise. + * + * struct tcp_request_sock *bpf_skc_to_tcp_request_sock(void *sk) + * Description + * Dynamically cast a *sk* pointer to a *tcp_request_sock* pointer. + * Return + * *sk* if casting is valid, or NULL otherwise. */ #define __BPF_FUNC_MAPPER(FN) \ FN(unspec), \ @@ -3399,7 +3417,10 @@ union bpf_attr { FN(ringbuf_discard), \ FN(ringbuf_query), \ FN(csum_level), \ - FN(skc_to_tcp6_sock), + FN(skc_to_tcp6_sock), \ + FN(skc_to_tcp_sock), \ + FN(skc_to_tcp_timewait_sock), \ + FN(skc_to_tcp_request_sock), /* integer value in 'imm' field of BPF_CALL instruction selects which helper * function eBPF program intends to call |