From: Yonghong Song <yhs@fb.com>
To: <bpf@vger.kernel.org>, <netdev@vger.kernel.org>
Cc: Alexei Starovoitov <ast@fb.com>,
Brian Vazquez <brianvv@google.com>,
Daniel Borkmann <daniel@iogearbox.net>, <kernel-team@fb.com>,
Yonghong Song <yhs@fb.com>
Subject: [PATCH bpf-next 04/13] bpf: refactor map_get_next_key()
Date: Wed, 28 Aug 2019 23:45:06 -0700 [thread overview]
Message-ID: <20190829064506.2750717-1-yhs@fb.com> (raw)
In-Reply-To: <20190829064502.2750303-1-yhs@fb.com>
Refactor function map_get_next_key() with a new helper
bpf_map_get_next_key(), which will be used later
for batched map lookup/lookup_and_delete/delete operations.
Signed-off-by: Yonghong Song <yhs@fb.com>
---
kernel/bpf/syscall.c | 24 +++++++++++++++---------
1 file changed, 15 insertions(+), 9 deletions(-)
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index b8bba499df11..06308f0206e5 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -1048,6 +1048,20 @@ static int map_delete_elem(union bpf_attr *attr)
return err;
}
+static int bpf_map_get_next_key(struct bpf_map *map, void *key, void *next_key)
+{
+ int err;
+
+ if (bpf_map_is_dev_bound(map))
+ return bpf_map_offload_get_next_key(map, key, next_key);
+
+ rcu_read_lock();
+ err = map->ops->map_get_next_key(map, key, next_key);
+ rcu_read_unlock();
+
+ return err;
+}
+
/* last field in 'union bpf_attr' used by this command */
#define BPF_MAP_GET_NEXT_KEY_LAST_FIELD next_key
@@ -1088,15 +1102,7 @@ static int map_get_next_key(union bpf_attr *attr)
if (!next_key)
goto free_key;
- if (bpf_map_is_dev_bound(map)) {
- err = bpf_map_offload_get_next_key(map, key, next_key);
- goto out;
- }
-
- rcu_read_lock();
- err = map->ops->map_get_next_key(map, key, next_key);
- rcu_read_unlock();
-out:
+ err = bpf_map_get_next_key(map, key, next_key);
if (err)
goto free_next_key;
--
2.17.1
next prev parent reply other threads:[~2019-08-29 6:45 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-29 6:45 [PATCH bpf-next 00/13] bpf: adding map batch processing support Yonghong Song
2019-08-29 6:45 ` [PATCH bpf-next 01/13] bpf: add bpf_map_value_size and bp_map_copy_value helper functions Yonghong Song
2019-08-29 22:04 ` Song Liu
2019-08-30 6:40 ` Yonghong Song
2019-08-29 6:45 ` [PATCH bpf-next 02/13] bpf: refactor map_update_elem() Yonghong Song
2019-08-29 23:37 ` Song Liu
2019-08-29 6:45 ` [PATCH bpf-next 03/13] bpf: refactor map_delete_elem() Yonghong Song
2019-08-29 23:39 ` Song Liu
2019-08-29 6:45 ` Yonghong Song [this message]
2019-08-29 23:39 ` [PATCH bpf-next 04/13] bpf: refactor map_get_next_key() Song Liu
2019-08-29 6:45 ` [PATCH bpf-next 05/13] bpf: adding map batch processing support Yonghong Song
2019-08-29 23:01 ` Brian Vazquez
2019-08-30 6:39 ` Yonghong Song
2019-08-30 6:58 ` Alexei Starovoitov
2019-08-29 6:45 ` [PATCH bpf-next 06/13] tools/bpf: sync uapi header bpf.h Yonghong Song
2019-08-29 6:45 ` [PATCH bpf-next 07/13] tools/bpf: implement libbpf API functions for map batch operations Yonghong Song
2019-08-29 6:45 ` [PATCH bpf-next 08/13] tools/bpf: add test for bpf_map_update_batch() Yonghong Song
2019-08-29 6:45 ` [PATCH bpf-next 09/13] tools/bpf: add test for bpf_map_lookup_batch() Yonghong Song
2019-08-29 6:45 ` [PATCH bpf-next 10/13] tools/bpf: add test for bpf_map_lookup_and_delete_batch() Yonghong Song
2019-08-29 6:45 ` [PATCH bpf-next 11/13] tools/bpf: add test for bpf_map_delete_batch() Yonghong Song
2019-08-29 6:45 ` [PATCH bpf-next 12/13] tools/bpf: add a multithreaded test for map batch operations Yonghong Song
2019-08-29 6:45 ` [PATCH bpf-next 13/13] tools/bpf: measure map batching perf Yonghong Song
2019-08-29 18:39 ` [PATCH bpf-next 00/13] bpf: adding map batch processing support Jakub Kicinski
2019-08-29 23:13 ` Brian Vazquez
2019-08-30 0:15 ` Jakub Kicinski
2019-08-30 20:15 ` Stanislav Fomichev
2019-08-30 20:55 ` Yonghong Song
2019-08-30 21:10 ` Jakub Kicinski
2019-08-30 22:24 ` Yonghong Song
2019-08-30 21:18 ` Stanislav Fomichev
2019-09-03 21:01 ` Alexei Starovoitov
2019-09-03 22:30 ` Stanislav Fomichev
2019-09-03 23:07 ` Brian Vazquez
2019-09-04 1:35 ` Alexei Starovoitov
2019-09-03 23:07 ` Yonghong Song
2019-08-30 7:25 ` Yonghong Song
2019-08-30 21:35 ` Jakub Kicinski
2019-08-30 22:38 ` Yonghong Song
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190829064506.2750717-1-yhs@fb.com \
--to=yhs@fb.com \
--cc=ast@fb.com \
--cc=bpf@vger.kernel.org \
--cc=brianvv@google.com \
--cc=daniel@iogearbox.net \
--cc=kernel-team@fb.com \
--cc=netdev@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).