[PATCH net-next v11 01/23] netlink: add NLA_POLICY_MAX_LEN macro
From: Antonio Quartulli <antonio@openvpn.net>
Date: 2024-10-29 10:48:01
Also in:
linux-kselftest, lkml
Subsystem:
networking [general], the rest, yaml netlink (ynl) · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds, Donald Hunter
Similarly to NLA_POLICY_MIN_LEN, NLA_POLICY_MAX_LEN defines a policy with a maximum length value. The netlink generator for YAML specs has been extended accordingly. Signed-off-by: Antonio Quartulli <antonio@openvpn.net> Reviewed-by: Donald Hunter <donald.hunter@gmail.com> --- include/net/netlink.h | 1 + tools/net/ynl/ynl-gen-c.py | 4 +++- 2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/include/net/netlink.h b/include/net/netlink.h
index db6af207287c839408c58cb28b82408e0548eaca..2dc671c977ff3297975269d236264907009703d3 100644
--- a/include/net/netlink.h
+++ b/include/net/netlink.h@@ -469,6 +469,7 @@ struct nla_policy { .max = _len \ } #define NLA_POLICY_MIN_LEN(_len) NLA_POLICY_MIN(NLA_BINARY, _len) +#define NLA_POLICY_MAX_LEN(_len) NLA_POLICY_MAX(NLA_BINARY, _len) /** * struct nl_info - netlink source information
diff --git a/tools/net/ynl/ynl-gen-c.py b/tools/net/ynl/ynl-gen-c.py
index 1a825b4081b222cf97eb73f01a2a5c1ffe47cd5c..aa22eb0924754f38ea0b9e68a1ff5a55d94d6717 100755
--- a/tools/net/ynl/ynl-gen-c.py
+++ b/tools/net/ynl/ynl-gen-c.py@@ -481,7 +481,7 @@ class TypeBinary(Type): pass elif len(self.checks) == 1: check_name = list(self.checks)[0] - if check_name not in {'exact-len', 'min-len'}: + if check_name not in {'exact-len', 'min-len', 'max-len'}: raise Exception('Unsupported check for binary type: ' + check_name) else: raise Exception('More than one check for binary type not implemented, yet')
@@ -492,6 +492,8 @@ class TypeBinary(Type): mem = 'NLA_POLICY_EXACT_LEN(' + self.get_limit_str('exact-len') + ')' elif 'min-len' in self.checks: mem = '{ .len = ' + self.get_limit_str('min-len') + ', }' + elif 'max-len' in self.checks: + mem = 'NLA_POLICY_MAX_LEN(' + self.get_limit_str('max-len') + ')' return mem
--
2.45.2