From 33720aaf8c2af5c0ff341a16b5048b9c7ecae569 Mon Sep 17 00:00:00 2001 From: Maor Gottlieb Date: Thu, 30 Apr 2020 22:21:39 +0300 Subject: [PATCH] bonding: Implement ndo_get_xmit_slave Add implementation of ndo_get_xmit_slave. Find the slave by using the helper function according to the bond mode. If the caller set all_slaves to true, then it assumes that all slaves are available to transmit. Signed-off-by: Maor Gottlieb Reviewed-by: Jay Vosburgh Reviewed-by: Jiri Pirko Acked-by: David S. Miller Signed-off-by: Saeed Mahameed --- drivers/net/bonding/bond_main.c | 43 +++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 2de693f0262e..39b1ad7edbb4 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -4347,6 +4347,48 @@ static u16 bond_select_queue(struct net_device *dev, struct sk_buff *skb, return txq; } +static struct net_device *bond_xmit_get_slave(struct net_device *master_dev, + struct sk_buff *skb, + bool all_slaves) +{ + struct bonding *bond = netdev_priv(master_dev); + struct bond_up_slave *slaves; + struct slave *slave = NULL; + + switch (BOND_MODE(bond)) { + case BOND_MODE_ROUNDROBIN: + slave = bond_xmit_roundrobin_slave_get(bond, skb); + break; + case BOND_MODE_ACTIVEBACKUP: + slave = bond_xmit_activebackup_slave_get(bond, skb); + break; + case BOND_MODE_8023AD: + case BOND_MODE_XOR: + if (all_slaves) + slaves = rcu_dereference(bond->all_slaves); + else + slaves = rcu_dereference(bond->usable_slaves); + slave = bond_xmit_3ad_xor_slave_get(bond, skb, slaves); + break; + case BOND_MODE_BROADCAST: + break; + case BOND_MODE_ALB: + slave = bond_xmit_alb_slave_get(bond, skb); + break; + case BOND_MODE_TLB: + slave = bond_xmit_tlb_slave_get(bond, skb); + break; + default: + /* Should never happen, mode already checked */ + WARN_ONCE(true, "Unknown bonding mode"); + break; + } + + if (slave) + return slave->dev; + return NULL; +} + static netdev_tx_t __bond_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct bonding *bond = netdev_priv(dev); @@ -4468,6 +4510,7 @@ static const struct net_device_ops bond_netdev_ops = { .ndo_del_slave = bond_release, .ndo_fix_features = bond_fix_features, .ndo_features_check = passthru_features_check, + .ndo_get_xmit_slave = bond_xmit_get_slave, }; static const struct device_type bond_type = {