From: Rocco Yue <rocco.yue@mediatek.com>
To: David Ahern <dsahern@kernel.org>,
"David S . Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>,
Matthias Brugger <matthias.bgg@gmail.com>
Cc: <netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-mediatek@lists.infradead.org>, <rocco.yue@gmail.com>,
<chao.song@mediatek.com>, <zhuoliang.zhang@mediatek.com>,
Rocco Yue <rocco.yue@mediatek.com>
Subject: [PATCH net-next] net: add extack arg for link ops
Date: Tue, 3 Aug 2021 20:02:50 +0800 [thread overview]
Message-ID: <20210803120250.32642-1-rocco.yue@mediatek.com> (raw)
Pass extack arg to validate_linkmsg and validate_link_af callbacks.
If a netlink attribute has a reject_message, use the extended ack
mechanism to carry the message back to user space.
Signed-off-by: Rocco Yue <rocco.yue@mediatek.com>
---
include/net/rtnetlink.h | 3 ++-
net/core/rtnetlink.c | 9 +++++----
net/ipv4/devinet.c | 5 +++--
net/ipv6/addrconf.c | 5 +++--
4 files changed, 13 insertions(+), 9 deletions(-)
diff --git a/include/net/rtnetlink.h b/include/net/rtnetlink.h
index 384e800665f2..9f48733bfd21 100644
--- a/include/net/rtnetlink.h
+++ b/include/net/rtnetlink.h
@@ -153,7 +153,8 @@ struct rtnl_af_ops {
u32 ext_filter_mask);
int (*validate_link_af)(const struct net_device *dev,
- const struct nlattr *attr);
+ const struct nlattr *attr,
+ struct netlink_ext_ack *extack);
int (*set_link_af)(struct net_device *dev,
const struct nlattr *attr,
struct netlink_ext_ack *extack);
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index f6af3e74fc44..8c78715338b0 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -2268,7 +2268,8 @@ static int rtnl_ensure_unique_netns(struct nlattr *tb[],
return -EINVAL;
}
-static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[])
+static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[],
+ struct netlink_ext_ack *extack)
{
if (dev) {
if (tb[IFLA_ADDRESS] &&
@@ -2295,7 +2296,7 @@ static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[])
return -EOPNOTSUPP;
if (af_ops->validate_link_af) {
- err = af_ops->validate_link_af(dev, af);
+ err = af_ops->validate_link_af(dev, af, extack);
if (err < 0)
return err;
}
@@ -2603,7 +2604,7 @@ static int do_setlink(const struct sk_buff *skb,
const struct net_device_ops *ops = dev->netdev_ops;
int err;
- err = validate_linkmsg(dev, tb);
+ err = validate_linkmsg(dev, tb, extack);
if (err < 0)
return err;
@@ -3301,7 +3302,7 @@ static int __rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh,
m_ops = master_dev->rtnl_link_ops;
}
- err = validate_linkmsg(dev, tb);
+ err = validate_linkmsg(dev, tb, extack);
if (err < 0)
return err;
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index 73721a4448bd..26856064096a 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -1950,7 +1950,8 @@ static const struct nla_policy inet_af_policy[IFLA_INET_MAX+1] = {
};
static int inet_validate_link_af(const struct net_device *dev,
- const struct nlattr *nla)
+ const struct nlattr *nla,
+ struct netlink_ext_ack *extack)
{
struct nlattr *a, *tb[IFLA_INET_MAX+1];
int err, rem;
@@ -1959,7 +1960,7 @@ static int inet_validate_link_af(const struct net_device *dev,
return -EAFNOSUPPORT;
err = nla_parse_nested_deprecated(tb, IFLA_INET_MAX, nla,
- inet_af_policy, NULL);
+ inet_af_policy, extack);
if (err < 0)
return err;
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 3bf685fe64b9..59792779551e 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -5784,7 +5784,8 @@ static int check_stable_privacy(struct inet6_dev *idev, struct net *net,
}
static int inet6_validate_link_af(const struct net_device *dev,
- const struct nlattr *nla)
+ const struct nlattr *nla,
+ struct netlink_ext_ack *extack)
{
struct nlattr *tb[IFLA_INET6_MAX + 1];
struct inet6_dev *idev = NULL;
@@ -5797,7 +5798,7 @@ static int inet6_validate_link_af(const struct net_device *dev,
}
err = nla_parse_nested_deprecated(tb, IFLA_INET6_MAX, nla,
- inet6_af_policy, NULL);
+ inet6_af_policy, extack);
if (err)
return err;
--
2.18.0
next reply other threads:[~2021-08-03 12:19 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-03 12:02 Rocco Yue [this message]
2021-08-03 14:32 ` [PATCH net-next] net: add extack arg for link ops David Ahern
2021-08-04 9:10 ` patchwork-bot+netdevbpf
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210803120250.32642-1-rocco.yue@mediatek.com \
--to=rocco.yue@mediatek.com \
--cc=chao.song@mediatek.com \
--cc=davem@davemloft.net \
--cc=dsahern@kernel.org \
--cc=kuba@kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mediatek@lists.infradead.org \
--cc=matthias.bgg@gmail.com \
--cc=netdev@vger.kernel.org \
--cc=rocco.yue@gmail.com \
--cc=yoshfuji@linux-ipv6.org \
--cc=zhuoliang.zhang@mediatek.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).