linux-kernel - [PATCH 5.18 058/181] veth: Add updating of trans

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: <20220627111946.248994237@linuxfoundation.org>
Date:   Mon, 27 Jun 2022 13:20:31 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jonathan Toppins <jtoppins@...hat.com>,
        Jay Vosburgh <jay.vosburgh@...onical.com>,
        "David S. Miller" <davem@...emloft.net>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.18 058/181] veth: Add updating of trans_start

From: Jay Vosburgh <jay.vosburgh@...onical.com>

[ Upstream commit e66e257a5d8368d9c0ba13d4630f474436533e8b ]

Since commit 21a75f0915dd ("bonding: Fix ARP monitor validation"),
the bonding ARP / ND link monitors depend on the trans_start time to
determine link availability.  NETIF_F_LLTX drivers must update trans_start
directly, which veth does not do.  This prevents use of the ARP or ND link
monitors with veth interfaces in a bond.

	Resolve this by having veth_xmit update the trans_start time.

Reported-by: Jonathan Toppins <jtoppins@...hat.com>
Tested-by: Jonathan Toppins <jtoppins@...hat.com>
Signed-off-by: Jay Vosburgh <jay.vosburgh@...onical.com>
Fixes: 21a75f0915dd ("bonding: Fix ARP monitor validation")
Link: https://lore.kernel.org/netdev/b2fd4147-8f50-bebd-963a-1a3e8d1d9715@redhat.com/
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/veth.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index eb0121a64d6d..1d1dea07d932 100644
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -312,6 +312,7 @@ static bool veth_skb_is_eligible_for_gro(const struct net_device *dev,
 static netdev_tx_t veth_xmit(struct sk_buff *skb, struct net_device *dev)
 {
 	struct veth_priv *rcv_priv, *priv = netdev_priv(dev);
+	struct netdev_queue *queue = NULL;
 	struct veth_rq *rq = NULL;
 	struct net_device *rcv;
 	int length = skb->len;
@@ -329,6 +330,7 @@ static netdev_tx_t veth_xmit(struct sk_buff *skb, struct net_device *dev)
 	rxq = skb_get_queue_mapping(skb);
 	if (rxq < rcv->real_num_rx_queues) {
 		rq = &rcv_priv->rq[rxq];
+		queue = netdev_get_tx_queue(dev, rxq);
 
 		/* The napi pointer is available when an XDP program is
 		 * attached or when GRO is enabled
@@ -340,6 +342,8 @@ static netdev_tx_t veth_xmit(struct sk_buff *skb, struct net_device *dev)
 
 	skb_tx_timestamp(skb);
 	if (likely(veth_forward_skb(rcv, skb, rq, use_napi) == NET_RX_SUCCESS)) {
+		if (queue)
+			txq_trans_cond_update(queue);
 		if (!use_napi)
 			dev_lstats_add(dev, length);
 	} else {
-- 
2.35.1