diff mbox series

[v2,net-next,3/7] veth: Set VETH_INFO_PEER to veth_link_ops.peer_type.

Message ID 20241106022432.13065-4-kuniyu@amazon.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series rtnetlink: Convert rtnl_newlink() to per-netns RTNL. | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 3 this patch: 3
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 5 of 5 maintainers
netdev/build_clang success Errors and warnings before: 3 this patch: 3
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 4 this patch: 4
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 38 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/contest fail net-next-2024-11-06--09-00 (tests: 783)

Commit Message

Kuniyuki Iwashima Nov. 6, 2024, 2:24 a.m. UTC 
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@amazon.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
---
 drivers/net/veth.c | 18 ++++--------------
 1 file changed, 4 insertions(+), 14 deletions(-)

Comments

Nikolay Aleksandrov Nov. 6, 2024, 10:38 a.m. UTC | #1 
On Tue, Nov 05, 2024 at 06:24:28PM -0800, Kuniyuki Iwashima wrote:
> 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@amazon.com>
> Reviewed-by: Eric Dumazet <edumazet@google.com>
> ---
>  drivers/net/veth.c | 18 ++++--------------
>  1 file changed, 4 insertions(+), 14 deletions(-)
> 

Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
diff mbox series

Patch

diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index 18148e068aa0..0d6d0d749d44 100644
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -1781,19 +1781,11 @@  static int veth_newlink(struct net *src_net, struct net_device *dev,
 	/*
 	 * create and register peer first
 	 */
-	if (data != NULL && data[VETH_INFO_PEER] != NULL) {
-		struct nlattr *nla_peer;
+	if (data && data[VETH_INFO_PEER]) {
+		struct nlattr *nla_peer = data[VETH_INFO_PEER];
 
-		nla_peer = data[VETH_INFO_PEER];
 		ifmp = nla_data(nla_peer);
-		err = rtnl_nla_parse_ifinfomsg(peer_tb, nla_peer, extack);
-		if (err < 0)
-			return err;
-
-		err = veth_validate(peer_tb, NULL, extack);
-		if (err < 0)
-			return err;
-
+		rtnl_nla_parse_ifinfomsg(peer_tb, nla_peer, extack);
 		tbp = peer_tb;
 	} else {
 		ifmp = NULL;
@@ -1809,9 +1801,6 @@  static int veth_newlink(struct net *src_net, struct net_device *dev,
 	}
 
 	net = rtnl_link_get_net(src_net, tbp);
-	if (IS_ERR(net))
-		return PTR_ERR(net);
-
 	peer = rtnl_create_link(net, ifname, name_assign_type,
 				&veth_link_ops, tbp, extack);
 	if (IS_ERR(peer)) {
@@ -1952,6 +1941,7 @@  static struct rtnl_link_ops veth_link_ops = {
 	.newlink	= veth_newlink,
 	.dellink	= veth_dellink,
 	.policy		= veth_policy,
+	.peer_type	= VETH_INFO_PEER,
 	.maxtype	= VETH_INFO_MAX,
 	.get_link_net	= veth_get_link_net,
 	.get_num_tx_queues	= veth_get_num_queues,