[PATCH RESEND v3 net-next 03/12] net: mscc: ocelot: don't refuse bonding interfaces we can't offload
From: Vladimir Oltean <olteanv@gmail.com>
Date: 2021-02-06 03:13:10
Subsystem:
networking drivers, ocelot ethernet switch driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Vladimir Oltean, Linus Torvalds
From: Vladimir Oltean <vladimir.oltean@nxp.com> Since switchdev/DSA exposes network interfaces that fulfill many of the same user space expectations that dedicated NICs do, it makes sense to not deny bonding interfaces with a bonding policy that we cannot offload, but instead allow the bonding driver to select the egress interface in software. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com> --- Changes in v3: None. Changes in v2: Addressed Alex's feedback:
This changes the return value in case of error, I'm not sure how important this is.
by keeping the return code of notifier_from_errno(-EINVAL) drivers/net/ethernet/mscc/ocelot.c | 6 ++++- drivers/net/ethernet/mscc/ocelot.h | 3 ++- drivers/net/ethernet/mscc/ocelot_net.c | 36 +++++++------------------- 3 files changed, 17 insertions(+), 28 deletions(-)
diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c
index 5f21799ad85b..33274d4fc5af 100644
--- a/drivers/net/ethernet/mscc/ocelot.c
+++ b/drivers/net/ethernet/mscc/ocelot.c@@ -1316,12 +1316,16 @@ static void ocelot_setup_lag(struct ocelot *ocelot, int lag) } int ocelot_port_lag_join(struct ocelot *ocelot, int port, - struct net_device *bond) + struct net_device *bond, + struct netdev_lag_upper_info *info) { struct net_device *ndev; u32 bond_mask = 0; int lag, lp; + if (info->tx_type != NETDEV_LAG_TX_TYPE_HASH) + return -EOPNOTSUPP; + rcu_read_lock(); for_each_netdev_in_bond_rcu(bond, ndev) { struct ocelot_port_private *priv = netdev_priv(ndev);
diff --git a/drivers/net/ethernet/mscc/ocelot.h b/drivers/net/ethernet/mscc/ocelot.h
index 76b8d8ce3b48..12dc74453076 100644
--- a/drivers/net/ethernet/mscc/ocelot.h
+++ b/drivers/net/ethernet/mscc/ocelot.h@@ -110,7 +110,8 @@ int ocelot_mact_learn(struct ocelot *ocelot, int port, int ocelot_mact_forget(struct ocelot *ocelot, const unsigned char mac[ETH_ALEN], unsigned int vid); int ocelot_port_lag_join(struct ocelot *ocelot, int port, - struct net_device *bond); + struct net_device *bond, + struct netdev_lag_upper_info *info); void ocelot_port_lag_leave(struct ocelot *ocelot, int port, struct net_device *bond); struct net_device *ocelot_port_to_netdev(struct ocelot *ocelot, int port);
diff --git a/drivers/net/ethernet/mscc/ocelot_net.c b/drivers/net/ethernet/mscc/ocelot_net.c
index ec68cf644522..0a4de949f4d9 100644
--- a/drivers/net/ethernet/mscc/ocelot_net.c
+++ b/drivers/net/ethernet/mscc/ocelot_net.c@@ -1129,12 +1129,19 @@ static int ocelot_netdevice_changeupper(struct net_device *dev, } } if (netif_is_lag_master(info->upper_dev)) { - if (info->linking) + if (info->linking) { err = ocelot_port_lag_join(ocelot, port, - info->upper_dev); - else + info->upper_dev, + info->upper_info); + if (err == -EOPNOTSUPP) { + NL_SET_ERR_MSG_MOD(info->info.extack, + "Offloading not supported"); + err = 0; + } + } else { ocelot_port_lag_leave(ocelot, port, info->upper_dev); + } } return notifier_from_errno(err);
@@ -1163,29 +1170,6 @@ static int ocelot_netdevice_event(struct notifier_block *unused, struct net_device *dev = netdev_notifier_info_to_dev(ptr); switch (event) { - case NETDEV_PRECHANGEUPPER: { - struct netdev_notifier_changeupper_info *info = ptr; - struct netdev_lag_upper_info *lag_upper_info; - struct netlink_ext_ack *extack; - - if (!ocelot_netdevice_dev_check(dev)) - break; - - if (!netif_is_lag_master(info->upper_dev)) - break; - - lag_upper_info = info->upper_info; - - if (lag_upper_info && - lag_upper_info->tx_type != NETDEV_LAG_TX_TYPE_HASH) { - extack = netdev_notifier_info_to_extack(&info->info); - NL_SET_ERR_MSG_MOD(extack, "LAG device using unsupported Tx type"); - - return notifier_from_errno(-EINVAL); - } - - break; - } case NETDEV_CHANGEUPPER: { struct netdev_notifier_changeupper_info *info = ptr;
--
2.25.1