netdev - Re: [PATCH 4/5] bonding: Added bond_tlb

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Date:	Mon, 31 Mar 2014 15:16:27 -0700
From:	Mahesh Bandewar <maheshb@...gle.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Jay Vosburgh <fubar@...ibm.com>,
	Veaceslav Falico <vfalico@...hat.com>,
	Andy Gospodarek <andy@...yhouse.net>,
	David Miller <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>,
	Eric Dumazet <edumazet@...gle.com>,
	Maciej Zenczykowski <maze@...gle.com>
Subject: Re: [PATCH 4/5] bonding: Added bond_tlb_xmit() for tlb mode.

On Mon, Mar 31, 2014 at 8:52 AM, Eric Dumazet <eric.dumazet@...il.com> wrote:
> On Fri, 2014-03-28 at 22:29 -0700, Mahesh Bandewar wrote:
>> Re-organized the xmit function for the lb mode separating tlb xmit
>> from the alb mode. This will enable use of the hashing policies
>> like 802.3ad mode. Also extended use of xmit-hash-policy to tlb mode.
>>
>> Now the tlb-mode defaults to BOND_XMIT_POLICY_LAYER2 if the xmit policy
>> module parameter is not set (just like 802.3ad, or Xor mode).
>>
>> Signed-off-by: Mahesh Bandewar <maheshb@...gle.com>
>> ---
>>  drivers/net/bonding/bond_alb.c     | 25 +++++++++++++++++++++++++
>>  drivers/net/bonding/bond_alb.h     |  1 +
>>  drivers/net/bonding/bond_main.c    |  6 ++++--
>>  drivers/net/bonding/bond_options.c |  2 +-
>>  4 files changed, 31 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/net/bonding/bond_alb.c b/drivers/net/bonding/bond_alb.c
>> index 5cd36016c393..8b7426ce6182 100644
>> --- a/drivers/net/bonding/bond_alb.c
>> +++ b/drivers/net/bonding/bond_alb.c
>> @@ -1381,6 +1381,31 @@ out:
>>       return NETDEV_TX_OK;
>>  }
>>
>> +int bond_tlb_xmit(struct sk_buff *skb, struct net_device *bond_dev)
>> +{
>> +     struct bonding *bond = netdev_priv(bond_dev);
>> +     struct ethhdr *eth_data;
>> +     struct slave *tx_slave = NULL;
>> +     u32 hash_index = 0;
>> +
>> +     skb_reset_mac_header(skb);
>> +     eth_data = eth_hdr(skb);
>> +
>> +     /* Do not TX balance any multicast or broadcast */
>> +     if (!is_multicast_ether_addr(eth_data->h_dest)) {
>> +             switch (ntohs(skb->protocol)) {
>
> Nit :
>
> You can avoid the ntohs(skb->protocol)
>
>> +             case ETH_P_IP:
>
> by using "   case htons(ETH_P_IP)
>
Yes, will fix this too!
>
>> +             case ETH_P_IPX: /* In case of IPX, it will falback to L2 hash */
>> +             case ETH_P_IPV6:
>> +                     hash_index = bond_xmit_hash(bond, skb);
>> +                     tx_slave = tlb_choose_channel(bond, hash_index & 0xFF, skb->len);
>> +                     break;
>> +             }
>> +     }
>
>
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