From 8c54d706d829ccbfebcf112745c2281430dee574 Mon Sep 17 00:00:00 2001 From: Mohd Faizal Abdul Rahim Date: Thu, 10 Nov 2022 14:45:52 +0800 Subject: [PATCH] net: stmmac: ensure tx function is not running in stmmac_xdp_release() [ Upstream commit 77711683a50477de39757d67ab1a3638220d6860 ] When stmmac_xdp_release() is called, there is a possibility that tx function is still running on other queues which will lead to tx queue timed out and reset adapter. This commit ensure that tx function is not running xdp before release flow continue to run. Fixes: ac746c8520d9 ("net: stmmac: enhance XDP ZC driver level switching performance") Signed-off-by: Song Yoong Siang Signed-off-by: Mohd Faizal Abdul Rahim Signed-off-by: Noor Azura Ahmad Tarmizi Link: https://lore.kernel.org/r/20221110064552.22504-1-noor.azura.ahmad.tarmizi@linux.intel.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 6f579f4..8590249 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -6494,6 +6494,9 @@ void stmmac_xdp_release(struct net_device *dev) struct stmmac_priv *priv = netdev_priv(dev); u32 chan; + /* Ensure tx function is not running */ + netif_tx_disable(dev); + /* Disable NAPI process */ stmmac_disable_all_queues(priv); -- 2.7.4