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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Shuah Khan , Nikolay Aleksandrov , Mahesh Bandewar , linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, Hangbin Liu Subject: [PATCHv3 net 1/3] bonding: set AD_RX_PORT_DISABLED when disabling a port Date: Thu, 26 Feb 2026 12:53:28 +0000 Message-ID: <20260226125331.28147-2-liuhangbin@gmail.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20260226125331.28147-1-liuhangbin@gmail.com> References: <20260226125331.28147-1-liuhangbin@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: 8bit When disabling a port’s collecting and distributing states, updating only rx_disabled is not sufficient. We also need to set AD_RX_PORT_DISABLED so that the rx_machine transitions into the AD_RX_EXPIRED state. One example is in ad_agg_selection_logic(): when a new aggregator is selected and old active aggregator is disabled, if AD_RX_PORT_DISABLED is not set, the disabled port may remain stuck in AD_RX_CURRENT due to continuing to receive partner LACP messages. The __disable_port() called by ad_disable_collecting_distributing() does not have this issue, since its caller also clears the collecting/distributing bits. The __disable_port() called by bond_3ad_bind_slave() should also be fine, as the RX state machine is re-initialized to AD_RX_INITIALIZE. Let's fix this only in ad_agg_selection_logic() to reduce the chances of unintended side effects. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Hangbin Liu --- drivers/net/bonding/bond_3ad.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/bonding/bond_3ad.c b/drivers/net/bonding/bond_3ad.c index af7f74cfdc08..c47f6a69fd2a 100644 --- a/drivers/net/bonding/bond_3ad.c +++ b/drivers/net/bonding/bond_3ad.c @@ -1932,6 +1932,7 @@ static void ad_agg_selection_logic(struct aggregator *agg, if (active) { for (port = active->lag_ports; port; port = port->next_port_in_aggregator) { + port->sm_rx_state = AD_RX_PORT_DISABLED; __disable_port(port); } } -- 2.50.1