5.15-stable review patch. If anyone has any objections, please let me know.
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From: Ravi Gunasekaran r-gunasekaran@ti.com
commit b11c81731c810efe592e510bb0110e0db6877419 upstream.
commit e748d0fd66ab ("net: hsr: Disable promiscuous mode in offload mode") disables promiscuous mode of slave devices while creating an HSR interface. But while deleting the HSR interface, it does not take care of it. It decreases the promiscuous mode count, which eventually enables promiscuous mode on the slave devices when creating HSR interface again.
Fix this by not decrementing the promiscuous mode count while deleting the HSR interface when offload is enabled.
Fixes: e748d0fd66ab ("net: hsr: Disable promiscuous mode in offload mode") Signed-off-by: Ravi Gunasekaran r-gunasekaran@ti.com Reviewed-by: Jiri Pirko jiri@nvidia.com Link: https://lore.kernel.org/r/20240322100447.27615-1-r-gunasekaran@ti.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/hsr/hsr_slave.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/net/hsr/hsr_slave.c +++ b/net/hsr/hsr_slave.c @@ -226,7 +226,8 @@ void hsr_del_port(struct hsr_port *port) netdev_update_features(master->dev); dev_set_mtu(master->dev, hsr_get_max_mtu(hsr)); netdev_rx_handler_unregister(port->dev); - dev_set_promiscuity(port->dev, -1); + if (!port->hsr->fwd_offloaded) + dev_set_promiscuity(port->dev, -1); netdev_upper_dev_unlink(port->dev, master->dev); }