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rtnetlink: Move ops->validate to rtnl_newlink().

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ops->validate() does not require RTNL.

Let's move it to rtnl_newlink().

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Kuniyuki Iwashima 2024-10-16 11:53:49 -07:00 • committed by Paolo Abeni
parent 331fe31c50
commit 0d3008d1a9
1 changed files with 24 additions and 25 deletions
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49
net/core/rtnetlink.c
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@ -3692,16 +3692,14 @@ out_unregister:
static int __rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh,
const struct rtnl_link_ops *ops,
struct rtnl_newlink_tbs *tbs,
struct nlattr **data,
struct netlink_ext_ack *extack)
{
struct nlattr ** const linkinfo = tbs->linkinfo;
struct nlattr ** const tb = tbs->tb;
struct net *net = sock_net(skb->sk);
struct net_device *dev;
struct ifinfomsg *ifm;
struct nlattr **data;
bool link_specified;
int err;
ifm = nlmsg_data(nlh);
if (ifm->ifi_index > 0) {
@ -3718,26 +3716,6 @@ static int __rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh,
dev = NULL;
}
data = NULL;
if (ops) {
if (ops->maxtype > RTNL_MAX_TYPE)
return -EINVAL;
if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) {
err = nla_parse_nested_deprecated(tbs->attr, ops->maxtype,
linkinfo[IFLA_INFO_DATA],
ops->policy, extack);
if (err < 0)
return err;
data = tbs->attr;
}
if (ops->validate) {
err = ops->validate(tb, data, extack);
if (err < 0)
return err;
}
}
if (dev)
return rtnl_changelink(skb, nlh, ops, dev, tbs, data, extack);
@ -3768,8 +3746,8 @@ static int __rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh,
static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
struct nlattr **tb, **linkinfo, **data = NULL;
const struct rtnl_link_ops *ops = NULL;
struct nlattr **tb, **linkinfo;
struct rtnl_newlink_tbs *tbs;
int ret;
@ -3813,7 +3791,28 @@ static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh,
#endif
}
ret = __rtnl_newlink(skb, nlh, ops, tbs, extack);
if (ops) {
if (ops->maxtype > RTNL_MAX_TYPE)
return -EINVAL;
if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) {
ret = nla_parse_nested_deprecated(tbs->attr, ops->maxtype,
linkinfo[IFLA_INFO_DATA],
ops->policy, extack);
if (ret < 0)
goto free;
data = tbs->attr;
}
if (ops->validate) {
ret = ops->validate(tb, data, extack);
if (ret < 0)
goto free;
}
}
ret = __rtnl_newlink(skb, nlh, ops, tbs, data, extack);
free:
kfree(tbs);