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authorQuentin Monnet <quentin.monnet@netronome.com>2019-05-10 16:51:22 +0200
committerDaniel Borkmann <daniel@iogearbox.net>2019-05-13 01:12:45 +0200
commit748c7c821aca5e32fab5676193365fc2705af366 (patch)
tree0b5a0a9f2d49865172d02691e162ceca6802fa6b /scripts
parentbpf: add various test cases for backward jumps (diff)
downloadlinux-748c7c821aca5e32fab5676193365fc2705af366.tar.xz
linux-748c7c821aca5e32fab5676193365fc2705af366.zip
bpf: fix script for generating man page on BPF helpers
The script broke on parsing function prototype for bpf_strtoul(). This is because the last argument for the function is a pointer to an "unsigned long". The current version of the script only accepts "const" and "struct", but not "unsigned", at the beginning of argument types made of several words. One solution could be to add "unsigned" to the list, but the issue could come up again in the future (what about "long int"?). It turns out we do not need to have such restrictions on the words: so let's simply accept any series of words instead. Reported-by: Yonghong Song <yhs@fb.com> Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'scripts')
-rwxr-xr-xscripts/bpf_helpers_doc.py8
1 files changed, 4 insertions, 4 deletions
diff --git a/scripts/bpf_helpers_doc.py b/scripts/bpf_helpers_doc.py
index 5010a4d5bfba..894cc58c1a03 100755
--- a/scripts/bpf_helpers_doc.py
+++ b/scripts/bpf_helpers_doc.py
@@ -1,7 +1,7 @@
#!/usr/bin/python3
# SPDX-License-Identifier: GPL-2.0-only
#
-# Copyright (C) 2018 Netronome Systems, Inc.
+# Copyright (C) 2018-2019 Netronome Systems, Inc.
# In case user attempts to run with Python 2.
from __future__ import print_function
@@ -39,7 +39,7 @@ class Helper(object):
Break down helper function protocol into smaller chunks: return type,
name, distincts arguments.
"""
- arg_re = re.compile('((const )?(struct )?(\w+|...))( (\**)(\w+))?$')
+ arg_re = re.compile('((\w+ )*?(\w+|...))( (\**)(\w+))?$')
res = {}
proto_re = re.compile('(.+) (\**)(\w+)\(((([^,]+)(, )?){1,5})\)$')
@@ -54,8 +54,8 @@ class Helper(object):
capture = arg_re.match(a)
res['args'].append({
'type' : capture.group(1),
- 'star' : capture.group(6),
- 'name' : capture.group(7)
+ 'star' : capture.group(5),
+ 'name' : capture.group(6)
})
return res