netdev - linux-next: manual merge of the net-next tree with the rdma tree

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Date:   Fri, 8 May 2020 13:18:51 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     David Miller <davem@...emloft.net>,
        Networking <netdev@...r.kernel.org>,
        Doug Ledford <dledford@...hat.com>,
        Jason Gunthorpe <jgg@...lanox.com>,
        Leon Romanovsky <leon@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>
Cc:     Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Maor Gottlieb <maorg@...lanox.com>,
        Saeed Mahameed <saeedm@...lanox.com>
Subject: linux-next: manual merge of the net-next tree with the rdma tree

Hi all,

Today's linux-next merge of the net-next tree got a conflict in:

  drivers/net/bonding/bond_main.c

between commits:

  ed7d4f023b1a ("bonding: Rename slave_arr to usable_slaves")
  c071d91d2a89 ("bonding: Add helper function to get the xmit slave based on hash")
  29d5bbccb3a1 ("bonding: Add helper function to get the xmit slave in rr mode")

from the rdma and mlx5-next trees and commit:

  ae46f184bc1f ("bonding: propagate transmit status")

from the net-next tree.

I fixed it up (I think - see below) and can carry the fix as
necessary. This is now fixed as far as linux-next is concerned, but any
non trivial conflicts should be mentioned to your upstream maintainer
when your tree is submitted for merging.  You may also want to consider
cooperating with the maintainer of the conflicting tree to minimise any
particularly complex conflicts.

-- 
Cheers,
Stephen Rothwell

diff --cc drivers/net/bonding/bond_main.c
index 39b1ad7edbb4,4f9e7c421f57..000000000000
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@@ -4022,32 -4024,12 +4022,30 @@@ static struct slave *bond_xmit_roundrob
  non_igmp:
  	slave_cnt = READ_ONCE(bond->slave_cnt);
  	if (likely(slave_cnt)) {
 -		slave_id = bond_rr_gen_slave_id(bond);
 -		return bond_xmit_slave_id(bond, skb, slave_id % slave_cnt);
 +		slave_id = bond_rr_gen_slave_id(bond) % slave_cnt;
 +		return bond_get_slave_by_id(bond, slave_id);
  	}
 +	return NULL;
 +}
 +
 +static netdev_tx_t bond_xmit_roundrobin(struct sk_buff *skb,
 +					struct net_device *bond_dev)
 +{
 +	struct bonding *bond = netdev_priv(bond_dev);
 +	struct slave *slave;
 +
 +	slave = bond_xmit_roundrobin_slave_get(bond, skb);
 +	if (slave)
- 		bond_dev_queue_xmit(bond, skb, slave->dev);
- 	else
- 		bond_tx_drop(bond_dev, skb);
- 	return NETDEV_TX_OK;
++		return bond_dev_queue_xmit(bond, skb, slave->dev);
+ 	return bond_tx_drop(bond_dev, skb);
  }
  
 +static struct slave *bond_xmit_activebackup_slave_get(struct bonding *bond,
 +						      struct sk_buff *skb)
 +{
 +	return rcu_dereference(bond->curr_active_slave);
 +}
 +
  /* In active-backup mode, we know that bond->curr_active_slave is always valid if
   * the bond has a usable interface.
   */
@@@ -4057,13 -4039,11 +4055,11 @@@ static netdev_tx_t bond_xmit_activeback
  	struct bonding *bond = netdev_priv(bond_dev);
  	struct slave *slave;
  
 -	slave = rcu_dereference(bond->curr_active_slave);
 +	slave = bond_xmit_activebackup_slave_get(bond, skb);
  	if (slave)
- 		bond_dev_queue_xmit(bond, skb, slave->dev);
- 	else
- 		bond_tx_drop(bond_dev, skb);
+ 		return bond_dev_queue_xmit(bond, skb, slave->dev);
  
- 	return NETDEV_TX_OK;
+ 	return bond_tx_drop(bond_dev, skb);
  }
  
  /* Use this to update slave_array when (a) it's not appropriate to update
@@@ -4254,17 -4178,17 +4250,14 @@@ static netdev_tx_t bond_3ad_xor_xmit(st
  				     struct net_device *dev)
  {
  	struct bonding *bond = netdev_priv(dev);
 -	struct slave *slave;
  	struct bond_up_slave *slaves;
 -	unsigned int count;
 +	struct slave *slave;
  
 -	slaves = rcu_dereference(bond->slave_arr);
 -	count = slaves ? READ_ONCE(slaves->count) : 0;
 -	if (likely(count)) {
 -		slave = slaves->arr[bond_xmit_hash(bond, skb) % count];
 +	slaves = rcu_dereference(bond->usable_slaves);
 +	slave = bond_xmit_3ad_xor_slave_get(bond, skb, slaves);
 +	if (likely(slave))
- 		bond_dev_queue_xmit(bond, skb, slave->dev);
- 	else
- 		bond_tx_drop(dev, skb);
- 
- 	return NETDEV_TX_OK;
+ 		return bond_dev_queue_xmit(bond, skb, slave->dev);
 -	}
+ 	return bond_tx_drop(dev, skb);
  }
  
  /* in broadcast mode, we send everything to all usable interfaces. */

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