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Message-ID: <20241105020514.41963-6-kuniyu@amazon.com>
Date: Mon, 4 Nov 2024 18:05:11 -0800
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>, Simon Horman <horms@...nel.org>
CC: Andrew Lunn <andrew+netdev@...n.ch>, Marc Kleine-Budde
<mkl@...gutronix.de>, Vincent Mailhol <mailhol.vincent@...adoo.fr>, "Daniel
Borkmann" <daniel@...earbox.net>, Nikolay Aleksandrov <razor@...ckwall.org>,
Kuniyuki Iwashima <kuniyu@...zon.com>, Kuniyuki Iwashima
<kuni1840@...il.com>, <netdev@...r.kernel.org>
Subject: [PATCH v1 net-next 5/8] vxcan: Set VXCAN_INFO_PEER to vxcan_link_ops.peer_type.
For per-netns RTNL, we need to prefetch the peer device's netns.
Let's set rtnl_link_ops.peer_type and accordingly remove duplicated
validation in ->newlink().
Signed-off-by: Kuniyuki Iwashima <kuniyu@...zon.com>
---
Note for CAN maintainers, this patch needs to go through net-next
directly as the later patch depends on this.
---
drivers/net/can/vxcan.c | 12 +++---------
1 file changed, 3 insertions(+), 9 deletions(-)
diff --git a/drivers/net/can/vxcan.c b/drivers/net/can/vxcan.c
index 9e1b7d41005f..da7c72105fb6 100644
--- a/drivers/net/can/vxcan.c
+++ b/drivers/net/can/vxcan.c
@@ -188,14 +188,10 @@ static int vxcan_newlink(struct net *net, struct net_device *dev,
/* register peer device */
if (data && data[VXCAN_INFO_PEER]) {
- struct nlattr *nla_peer;
+ struct nlattr *nla_peer = data[VXCAN_INFO_PEER];
- nla_peer = data[VXCAN_INFO_PEER];
ifmp = nla_data(nla_peer);
- err = rtnl_nla_parse_ifinfomsg(peer_tb, nla_peer, extack);
- if (err < 0)
- return err;
-
+ rtnl_nla_parse_ifinfomsg(peer_tb, nla_peer, extack);
tbp = peer_tb;
}
@@ -208,9 +204,6 @@ static int vxcan_newlink(struct net *net, struct net_device *dev,
}
peer_net = rtnl_link_get_net(net, tbp);
- if (IS_ERR(peer_net))
- return PTR_ERR(peer_net);
-
peer = rtnl_create_link(peer_net, ifname, name_assign_type,
&vxcan_link_ops, tbp, extack);
if (IS_ERR(peer)) {
@@ -302,6 +295,7 @@ static struct rtnl_link_ops vxcan_link_ops = {
.newlink = vxcan_newlink,
.dellink = vxcan_dellink,
.policy = vxcan_policy,
+ .peer_type = VXCAN_INFO_PEER,
.maxtype = VXCAN_INFO_MAX,
.get_link_net = vxcan_get_link_net,
};
--
2.39.5 (Apple Git-154)
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