netdev - [PATCH v1 net-next 01/13] rtnetlink: Allocate linkinfo[] as struct rtnl_newlink

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: <20241009231656.57830-2-kuniyu@amazon.com>
Date: Wed, 9 Oct 2024 16:16:44 -0700
From: Kuniyuki Iwashima <kuniyu@...zon.com>
To: "David S. Miller" <davem@...emloft.net>, Eric Dumazet
	<edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni
	<pabeni@...hat.com>
CC: Kuniyuki Iwashima <kuniyu@...zon.com>, Kuniyuki Iwashima
	<kuni1840@...il.com>, <netdev@...r.kernel.org>
Subject: [PATCH v1 net-next 01/13] rtnetlink: Allocate linkinfo[] as struct rtnl_newlink_tbs.

We will move linkinfo to rtnl_newlink() and pass it down to other
functions.

Let's pack it into rtnl_newlink_tbs.

Signed-off-by: Kuniyuki Iwashima <kuniyu@...zon.com>
---
 net/core/rtnetlink.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 6d68247aea70..abc44ee018a0 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -3621,6 +3621,7 @@ static int rtnl_newlink_create(struct sk_buff *skb, struct ifinfomsg *ifm,
 
 struct rtnl_newlink_tbs {
 	struct nlattr *tb[IFLA_MAX + 1];
+	struct nlattr *linkinfo[IFLA_INFO_MAX + 1];
 	struct nlattr *attr[RTNL_MAX_TYPE + 1];
 	struct nlattr *slave_attr[RTNL_SLAVE_MAX_TYPE + 1];
 };
@@ -3629,7 +3630,7 @@ static int __rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh,
 			  struct rtnl_newlink_tbs *tbs,
 			  struct netlink_ext_ack *extack)
 {
-	struct nlattr *linkinfo[IFLA_INFO_MAX + 1];
+	struct nlattr ** const linkinfo = tbs->linkinfo;
 	struct nlattr ** const tb = tbs->tb;
 	const struct rtnl_link_ops *m_ops;
 	struct net_device *master_dev;
@@ -3684,8 +3685,9 @@ static int __rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh,
 						  ifla_info_policy, NULL);
 		if (err < 0)
 			return err;
-	} else
-		memset(linkinfo, 0, sizeof(linkinfo));
+	} else {
+		memset(linkinfo, 0, sizeof(tbs->linkinfo));
+	}
 
 	if (linkinfo[IFLA_INFO_KIND]) {
 		nla_strscpy(kind, linkinfo[IFLA_INFO_KIND], sizeof(kind));
-- 
2.39.5 (Apple Git-154)