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Message-ID: <5061DF4D.60708@redhat.com>
Date: Tue, 25 Sep 2012 18:43:57 +0200
From: Nikolay Aleksandrov <nikolay@...hat.com>
To: sony.chacko@...gic.com
CC: netdev@...r.kernel.org, agospoda@...hat.com,
rajesh.borundia@...gic.com, davem@...emloft.net
Subject: Re: [PATCH net-next] netxen: write IP address to firmware when using
bonding
On 25/09/12 10:48, Nikolay Aleksandrov wrote:
> From: Nikolay Aleksandrov<naleksan@...hat.com>
>
> This patch allows LRO aggregation on bonded devices that contain an NX3031
> device. It also adds a for_each_netdev_in_bond_rcu(bond, slave) macro
> which executes for each slave that has bond as master.
>
> Signed-off-by: Andy Gospodarek<agospoda@...hat.com>
> Signed-off-by: Nikolay Aleksandrov<nikolay@...hat.com>
> ---
> .../net/ethernet/qlogic/netxen/netxen_nic_main.c | 113 +++++++++++++++------
> include/linux/netdevice.h | 3 +
> 2 files changed, 87 insertions(+), 29 deletions(-)
>
> diff --git a/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c b/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c
> index e2a4858..aaf6cf7 100644
> --- a/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c
> +++ b/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c
> @@ -3244,6 +3244,25 @@ netxen_restore_indev_addr(struct net_device *netdev, unsigned long event)
> }
> }
>
> +static inline int
> +netxen_config_checkdev(struct net_device *dev)
> +{
> + struct netxen_adapter *adapter;
> +
> + if (!is_netxen_netdev(dev))
> + return -ENODEV;
> +
> + adapter = netdev_priv(dev);
> +
> + if(!adapter)
> + return -ENODEV;
> +
> + if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
> + return -ENODEV;
> +
> + return 0;
> +}
> +
> static int netxen_netdev_event(struct notifier_block *this,
> unsigned long event, void *ptr)
> {
> @@ -3260,18 +3279,27 @@ recheck:
> goto recheck;
> }
>
> - if (!is_netxen_netdev(dev))
> - goto done;
> -
> - adapter = netdev_priv(dev);
> -
> - if (!adapter)
> - goto done;
> + /* If this is a bonding device, look for netxen-based slaves*/
> + if (dev->priv_flags& IFF_BONDING) {
> + struct net_device *slave;
>
> - if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
> - goto done;
> + rcu_read_lock();
> + for_each_netdev_in_bond_rcu(dev, slave) {
> + if (netxen_config_checkdev(slave)< 0)
> + continue;
> +
> + adapter = netdev_priv(slave);
> + netxen_config_indev_addr(adapter, orig_dev, event);
> + }
> + rcu_read_unlock();
>
> - netxen_config_indev_addr(adapter, orig_dev, event);
> + } else {
> + if (netxen_config_checkdev(dev)< 0)
> + goto done;
> +
> + adapter = netdev_priv(dev);
> + netxen_config_indev_addr(adapter, orig_dev, event);
> + }
> done:
> return NOTIFY_DONE;
> }
> @@ -3296,30 +3324,57 @@ recheck:
> goto recheck;
> }
>
> - if (!is_netxen_netdev(dev))
> - goto done;
> + /* If this is a bonding device, look for netxen-based slaves*/
> + if (dev->priv_flags& IFF_BONDING) {
> + struct net_device *slave;
>
> - adapter = netdev_priv(dev);
> + rcu_read_lock();
> + for_each_netdev_in_bond_rcu(dev, slave) {
> + if (netxen_config_checkdev(slave)< 0)
> + continue;
>
> - if (!adapter || !netxen_destip_supported(adapter))
> - goto done;
> + adapter = netdev_priv(slave);
>
> - if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
> - goto done;
> + if (!netxen_destip_supported(adapter))
> + continue;
>
> - switch (event) {
> - case NETDEV_UP:
> - netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
> - netxen_list_config_vlan_ip(adapter, ifa, NX_IP_UP);
> - break;
> - case NETDEV_DOWN:
> - netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_DOWN);
> - netxen_list_config_vlan_ip(adapter, ifa, NX_IP_DOWN);
> - break;
> - default:
> - break;
> - }
> + switch (event) {
> + case NETDEV_UP:
> + netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
> + netxen_list_config_vlan_ip(adapter, ifa, NX_IP_UP);
> + break;
> + case NETDEV_DOWN:
> + netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_DOWN);
> + netxen_list_config_vlan_ip(adapter, ifa, NX_IP_DOWN);
> + break;
> + default:
> + break;
> + }
> + }
> + rcu_read_unlock();
>
> + } else {
> + if (netxen_config_checkdev(dev)< 0)
> + goto done;
> +
> + adapter = netdev_priv(dev);
> +
> + if (!netxen_destip_supported(adapter))
> + goto done;
> +
> + switch (event) {
> + case NETDEV_UP:
> + netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
> + netxen_list_config_vlan_ip(adapter, ifa, NX_IP_UP);
> + break;
> + case NETDEV_DOWN:
> + netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_DOWN);
> + netxen_list_config_vlan_ip(adapter, ifa, NX_IP_DOWN);
> + break;
> + default:
> + break;
> + }
> + }
> done:
> return NOTIFY_DONE;
> }
> diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
> index 59dc05f3..463bb40 100644
> --- a/include/linux/netdevice.h
> +++ b/include/linux/netdevice.h
> @@ -1578,6 +1578,9 @@ extern rwlock_t dev_base_lock; /* Device list lock */
> list_for_each_entry_continue(d,&(net)->dev_base_head, dev_list)
> #define for_each_netdev_continue_rcu(net, d) \
> list_for_each_entry_continue_rcu(d,&(net)->dev_base_head, dev_list)
> +#define for_each_netdev_in_bond_rcu(bond, slave) \
> + for_each_netdev_rcu(&init_net, slave) \
> + if (slave->master == bond)
> #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list)
>
> static inline struct net_device *next_net_device(struct net_device *dev)
Ah yes, you're correct. I'll fix the cosmetic issues and re-post it.
I would like to know if the patch is acceptable otherwise, and if
there are any comments about the implementation so I will
wait a little bit to see if anything else comes up.
Thank you for the review.
Best regards,
Nikolay Aleksandrov
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