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 03/13] bpf: refactor map_delete_elem()
Date: Wed, 28 Aug 2019 23:45:05 -0700 [thread overview]
Message-ID: <20190829064505.2750541-1-yhs@fb.com> (raw)
In-Reply-To: <20190829064502.2750303-1-yhs@fb.com>
Refactor function map_delete_elem() with a new helper
bpf_map_delete_elem(), which will be used later
for batched lookup_and_delete and delete operations.
Signed-off-by: Yonghong Song <yhs@fb.com>
---
kernel/bpf/syscall.c | 33 ++++++++++++++++++++-------------
1 file changed, 20 insertions(+), 13 deletions(-)
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index 3caa0ab3d30d..b8bba499df11 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -992,6 +992,25 @@ static int map_update_elem(union bpf_attr *attr)
return err;
}
+static int bpf_map_delete_elem(struct bpf_map *map, void *key)
+{
+ int err;
+
+ if (bpf_map_is_dev_bound(map))
+ return bpf_map_offload_delete_elem(map, key);
+
+ preempt_disable();
+ __this_cpu_inc(bpf_prog_active);
+ rcu_read_lock();
+ err = map->ops->map_delete_elem(map, key);
+ rcu_read_unlock();
+ __this_cpu_dec(bpf_prog_active);
+ preempt_enable();
+ maybe_wait_bpf_programs(map);
+
+ return err;
+}
+
#define BPF_MAP_DELETE_ELEM_LAST_FIELD key
static int map_delete_elem(union bpf_attr *attr)
@@ -1021,20 +1040,8 @@ static int map_delete_elem(union bpf_attr *attr)
goto err_put;
}
- if (bpf_map_is_dev_bound(map)) {
- err = bpf_map_offload_delete_elem(map, key);
- goto out;
- }
+ err = bpf_map_delete_elem(map, key);
- preempt_disable();
- __this_cpu_inc(bpf_prog_active);
- rcu_read_lock();
- err = map->ops->map_delete_elem(map, key);
- rcu_read_unlock();
- __this_cpu_dec(bpf_prog_active);
- preempt_enable();
- maybe_wait_bpf_programs(map);
-out:
kfree(key);
err_put:
fdput(f);
--
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 ` Yonghong Song [this message]
2019-08-29 23:39 ` [PATCH bpf-next 03/13] bpf: refactor map_delete_elem() Song Liu
2019-08-29 6:45 ` [PATCH bpf-next 04/13] bpf: refactor map_get_next_key() Yonghong Song
2019-08-29 23:39 ` 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
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