diff options
| author | Jakub Kicinski <kuba@kernel.org> | 2020-10-05 15:07:35 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-10-06 06:25:55 -0700 |
| commit | ff419afa43109e05d42d75629f21d9fd87f635ea (patch) | |
| tree | aea540f88230add4ac90d08ca3d336a2a9a9deea /net/ethtool/cabletest.c | |
| parent | 5028588b62cbda74744f4f28b35f618e5b1078ef (diff) | |
ethtool: trim policy tables
Since ethtool uses strict attribute validation there's no need
to initialize all attributes in policy tables. 0 is NLA_UNSPEC
which is going to be rejected. Remove the NLA_REJECTs.
Similarly attributes above maxattrs are rejected, so there's
no need to always size the policy tables to ETHTOOL_A_..._MAX.
v2: - new patch
Suggested-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ethtool/cabletest.c')
| -rw-r--r-- | net/ethtool/cabletest.c | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/net/ethtool/cabletest.c b/net/ethtool/cabletest.c index beb85e0b7fc6..6f3328be6592 100644 --- a/net/ethtool/cabletest.c +++ b/net/ethtool/cabletest.c @@ -11,9 +11,7 @@ */ #define MAX_CABLE_LENGTH_CM (150 * 100) -const struct nla_policy -ethnl_cable_test_act_policy[ETHTOOL_A_CABLE_TEST_MAX + 1] = { - [ETHTOOL_A_CABLE_TEST_UNSPEC] = { .type = NLA_REJECT }, +const struct nla_policy ethnl_cable_test_act_policy[] = { [ETHTOOL_A_CABLE_TEST_HEADER] = { .type = NLA_NESTED }, }; @@ -212,17 +210,14 @@ struct cable_test_tdr_req_info { struct ethnl_req_info base; }; -static const struct nla_policy -cable_test_tdr_act_cfg_policy[ETHTOOL_A_CABLE_TEST_TDR_CFG_MAX + 1] = { +static const struct nla_policy cable_test_tdr_act_cfg_policy[] = { [ETHTOOL_A_CABLE_TEST_TDR_CFG_FIRST] = { .type = NLA_U32 }, [ETHTOOL_A_CABLE_TEST_TDR_CFG_LAST] = { .type = NLA_U32 }, [ETHTOOL_A_CABLE_TEST_TDR_CFG_STEP] = { .type = NLA_U32 }, [ETHTOOL_A_CABLE_TEST_TDR_CFG_PAIR] = { .type = NLA_U8 }, }; -const struct nla_policy -ethnl_cable_test_tdr_act_policy[ETHTOOL_A_CABLE_TEST_TDR_MAX + 1] = { - [ETHTOOL_A_CABLE_TEST_TDR_UNSPEC] = { .type = NLA_REJECT }, +const struct nla_policy ethnl_cable_test_tdr_act_policy[] = { [ETHTOOL_A_CABLE_TEST_TDR_HEADER] = { .type = NLA_NESTED }, [ETHTOOL_A_CABLE_TEST_TDR_CFG] = { .type = NLA_NESTED }, }; @@ -232,7 +227,7 @@ static int ethnl_act_cable_test_tdr_cfg(const struct nlattr *nest, struct genl_info *info, struct phy_tdr_config *cfg) { - struct nlattr *tb[ETHTOOL_A_CABLE_TEST_TDR_CFG_MAX + 1]; + struct nlattr *tb[ARRAY_SIZE(cable_test_tdr_act_cfg_policy)]; int ret; cfg->first = 100; @@ -243,8 +238,10 @@ static int ethnl_act_cable_test_tdr_cfg(const struct nlattr *nest, if (!nest) return 0; - ret = nla_parse_nested(tb, ETHTOOL_A_CABLE_TEST_TDR_CFG_MAX, nest, - cable_test_tdr_act_cfg_policy, info->extack); + ret = nla_parse_nested(tb, + ARRAY_SIZE(cable_test_tdr_act_cfg_policy) - 1, + nest, cable_test_tdr_act_cfg_policy, + info->extack); if (ret < 0) return ret; |