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Tue, 03 Mar 2026 23:14:42 -0800 (PST) Received: from 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa ([240e:34c:576b:6b60:293b:552b:9870:28a3]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-359aa3ebb2csm85731a91.12.2026.03.03.23.14.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Mar 2026 23:14:41 -0800 (PST) From: Hangbin Liu Subject: [PATCH net 0/2] bond: fix 2 link state issues Date: Wed, 04 Mar 2026 15:13:52 +0800 Message-Id: <20260304-b4-bond_updelay-v1-0-f72eb2e454d0@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAAAAAAAC/x2M0QpAMBhGX0X/tdWM1vIqkrAPf2m0IVre3VLn5 lycEynAMwLVWSSPiwNvLkmRZzQuvZsh2CYnJZWWpazEkNic7c7dYu0fobSGGVHIyoBStXtMfP/ HhhwOat/3A46qHIJmAAAA X-Change-ID: 20260304-b4-bond_updelay-266e8ce1048e To: Jay Vosburgh , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Tonghao Zhang , Hangbin Liu , Nikolay Aleksandrov Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Jay Vosburgh , Liang Li X-Mailer: b4 0.14.3 This patch set fixes two bonding link state issues: 1. Broadcast mode incorrectly sets usable_slaves, causing updelay to be ignored 2. BOND_LINK_FAIL and BOND_LINK_BACK are treated as invalid states, generating confusing error messages Here is the reproducer: ``` ip netns add ns ip -n ns link add bond0 type bond mode 3 miimon 100 updelay 200 downdelay 200 ip -n ns link add type veth ip -n ns link add type veth ip -n ns link set veth1 up ip -n ns link set veth3 up ip -n ns link set veth0 master bond0 ip -n ns link set veth2 master bond0 ip -n ns link set bond0 up sleep 1 ip -n ns link set veth3 down sleep 1 ip -n ns link set veth3 up sleep 1 dmesg | tail ``` --- Hangbin Liu (2): bonding: do not set usable_slaves for broadcast mode bonding: handle BOND_LINK_FAIL, BOND_LINK_BACK as valid link states drivers/net/bonding/bond_main.c | 21 ++++++++++++++++----- 1 file changed, 16 insertions(+), 5 deletions(-) --- base-commit: 46d0d6f50dab706637f4c18a470aac20a21900d3 change-id: 20260304-b4-bond_updelay-266e8ce1048e Best regards, -- Hangbin Liu