netdev - [PATCH net-next v3 8/9] genetlink: use parsed attrs in dumppolicy

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20201002215000.1526096-9-kuba@kernel.org>
Date:   Fri,  2 Oct 2020 14:49:59 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, andrew@...n.ch, johannes@...solutions.net,
        jiri@...nulli.us, mkubecek@...e.cz, dsahern@...nel.org,
        pablo@...filter.org, Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH net-next v3 8/9] genetlink: use parsed attrs in dumppolicy

Attributes are already parsed based on the policy specified
in the family and ready-to-use in info->attrs. No need to
call genlmsg_parse() again.

Signed-off-by: Jakub Kicinski <kuba@...nel.org>
Reviewed-by: Johannes Berg <johannes@...solutions.net>
---
 net/netlink/genetlink.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c
index c3673d84d8b5..6f7cd5f577b0 100644
--- a/net/netlink/genetlink.c
+++ b/net/netlink/genetlink.c
@@ -1117,18 +1117,13 @@ struct ctrl_dump_policy_ctx {
 
 static int ctrl_dumppolicy_start(struct netlink_callback *cb)
 {
+	const struct genl_dumpit_info *info = genl_dumpit_info(cb);
 	struct ctrl_dump_policy_ctx *ctx = (void *)cb->ctx;
-	struct nlattr *tb[CTRL_ATTR_MAX + 1];
+	struct nlattr **tb = info->attrs;
 	const struct genl_family *rt;
-	int err;
 
 	BUILD_BUG_ON(sizeof(*ctx) > sizeof(cb->ctx));
 
-	err = genlmsg_parse(cb->nlh, &genl_ctrl, tb, genl_ctrl.maxattr,
-			    genl_ctrl.policy, cb->extack);
-	if (err)
-		return err;
-
 	if (!tb[CTRL_ATTR_FAMILY_ID] && !tb[CTRL_ATTR_FAMILY_NAME])
 		return -EINVAL;
 
-- 
2.26.2