Files
android_kernel_xiaomi_sm8450/include/linux
Yonghong Song af7ec13833 bpf: Add bpf_skc_to_tcp6_sock() helper
The helper is used in tracing programs to cast a socket
pointer to a tcp6_sock pointer.
The return value could be NULL if the casting is illegal.

A new helper return type RET_PTR_TO_BTF_ID_OR_NULL is added
so the verifier is able to deduce proper return types for the helper.

Different from the previous BTF_ID based helpers,
the bpf_skc_to_tcp6_sock() argument can be several possible
btf_ids. More specifically, all possible socket data structures
with sock_common appearing in the first in the memory layout.
This patch only added socket types related to tcp and udp.

All possible argument btf_id and return value btf_id
for helper bpf_skc_to_tcp6_sock() are pre-calculcated and
cached. In the future, it is even possible to precompute
these btf_id's at kernel build time.

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20200623230809.3988195-1-yhs@fb.com
2020-06-24 18:37:59 -07:00
..
2020-05-17 21:10:28 -07:00
2020-05-09 16:15:13 -06:00
2020-05-24 20:48:11 +02:00
2020-06-24 18:37:59 -07:00
2020-05-19 09:40:29 -06:00
2020-04-10 15:36:21 -07:00
2020-05-13 08:44:35 -07:00
2020-05-04 11:19:58 -07:00
2020-06-09 09:39:13 -07:00
2020-05-28 07:59:45 -07:00
2020-05-28 18:07:11 +02:00
2020-04-30 12:54:01 -07:00
2020-05-18 10:30:21 +01:00
2020-06-02 15:15:46 +01:00
2020-05-08 18:18:11 +01:00
2020-05-08 00:12:42 +02:00
2020-05-28 10:31:09 +02:00
2020-04-07 10:43:38 -07:00
2020-06-10 19:14:18 -07:00
2020-03-21 16:00:24 +01:00
2020-05-09 13:57:12 +02:00
2020-04-02 09:35:27 -07:00
2020-05-15 13:51:28 -07:00
2020-05-09 13:57:12 +02:00
2020-03-21 16:00:24 +01:00
2020-03-21 16:00:24 +01:00
2020-05-17 14:10:07 -06:00
2020-05-14 16:44:24 +02:00
2020-05-14 16:44:25 +02:00
2020-04-28 11:05:44 +02:00
2020-06-24 11:21:03 -07:00
2020-05-04 09:16:37 -07:00
2020-05-29 14:52:53 +02:00
2020-03-23 17:01:47 +01:00
2020-04-01 12:06:26 -04:00
2020-04-17 06:05:30 -04:00