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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 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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