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netxen: write IP address to firmware when using bonding 

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.

V3: After testing and discussing this with Rajesh, I decided to keep the
    vlan ip cache and just rename it to ip_cache since it will store bond
    ip addresses too. A new master flag has been added to the ip cache to
    denote that the address has been added because of a master device.
    I've taken care of the enslave/release cases by checking for various
    combinations of events and flags (e.g. netxen has a master, it's a
    bond master and it's not marked as a slave means it is being enslaved
    and is dev_open()ed in bond_enslave).
    I've changed netxen_free_ip_list() to have a "master" parameter which
    causes all IP addresses marked as master to be deleted (used when a
    netxen is being released). I've made the patch use the new upper
    device API as well. The following cases were tested:
    - bond -> netxen
    - vlan -> netxen
    - vlan -> bond -> netxen

V2: Remove local ip caching, retrieve addresses dynamically and
    restore them if necessary.

Note: Tested with NX3031 adapter.

Tested-by: Rajesh Borundia <rajesh.borundia@qlogic.com>
Signed-off-by: Andy Gospodarek <agospoda@redhat.com>
Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
nikolay@redhat.com 2013-03-12 02:49:01 +00:00 committed by David S. Miller
parent 1e32b0c65c
commit 8a7fbfab4b
3 changed files with 155 additions and 78 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/net/ethernet/qlogic/netxen/netxen_nic.h
View File

@ -955,9 +955,10 @@ typedef struct nx_mac_list_s {
uint8_t mac_addr[ETH_ALEN+2];
} nx_mac_list_t;
struct nx_vlan_ip_list {
struct nx_ip_list {
struct list_head list;
__be32 ip_addr;
bool master;
};
/*
@ -1605,7 +1606,7 @@ struct netxen_adapter {
struct net_device *netdev;
struct pci_dev *pdev;
struct list_head mac_list;
struct list_head vlan_ip_list;
struct list_head ip_list;
spinlock_t tx_clean_lock;

220
drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c
View File

@ -90,7 +90,7 @@ static irqreturn_t netxen_intr(int irq, void *data);
static irqreturn_t netxen_msi_intr(int irq, void *data);
static irqreturn_t netxen_msix_intr(int irq, void *data);
static void netxen_free_vlan_ip_list(struct netxen_adapter *);
static void netxen_free_ip_list(struct netxen_adapter *, bool);
static void netxen_restore_indev_addr(struct net_device *dev, unsigned long);
static struct rtnl_link_stats64 *netxen_nic_get_stats(struct net_device *dev,
struct rtnl_link_stats64 *stats);
@ -1450,7 +1450,7 @@ netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
spin_lock_init(&adapter->tx_clean_lock);
INIT_LIST_HEAD(&adapter->mac_list);
INIT_LIST_HEAD(&adapter->vlan_ip_list);
INIT_LIST_HEAD(&adapter->ip_list);
err = netxen_setup_pci_map(adapter);
if (err)
@ -1585,7 +1585,7 @@ static void netxen_nic_remove(struct pci_dev *pdev)
cancel_work_sync(&adapter->tx_timeout_task);
netxen_free_vlan_ip_list(adapter);
netxen_free_ip_list(adapter, false);
netxen_nic_detach(adapter);
nx_decr_dev_ref_cnt(adapter);
@ -3137,62 +3137,77 @@ netxen_destip_supported(struct netxen_adapter *adapter)
}
static void
netxen_free_vlan_ip_list(struct netxen_adapter *adapter)
netxen_free_ip_list(struct netxen_adapter *adapter, bool master)
{
struct nx_vlan_ip_list *cur;
struct list_head *head = &adapter->vlan_ip_list;
struct nx_ip_list *cur, *tmp_cur;
while (!list_empty(head)) {
cur = list_entry(head->next, struct nx_vlan_ip_list, list);
netxen_config_ipaddr(adapter, cur->ip_addr, NX_IP_DOWN);
list_del(&cur->list);
kfree(cur);
list_for_each_entry_safe(cur, tmp_cur, &adapter->ip_list, list) {
if (master) {
if (cur->master) {
netxen_config_ipaddr(adapter, cur->ip_addr,
NX_IP_DOWN);
list_del(&cur->list);
kfree(cur);
}
} else {
netxen_config_ipaddr(adapter, cur->ip_addr, NX_IP_DOWN);
list_del(&cur->list);
kfree(cur);
}
}
}
static void
netxen_list_config_vlan_ip(struct netxen_adapter *adapter,
static bool
netxen_list_config_ip(struct netxen_adapter *adapter,
struct in_ifaddr *ifa, unsigned long event)
{
struct net_device *dev;
struct nx_vlan_ip_list *cur, *tmp_cur;
struct nx_ip_list *cur, *tmp_cur;
struct list_head *head;
bool ret = false;
dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
if (dev == NULL)
return;
if (!is_vlan_dev(dev))
return;
goto out;
switch (event) {
case NX_IP_UP:
list_for_each(head, &adapter->vlan_ip_list) {
cur = list_entry(head, struct nx_vlan_ip_list, list);
list_for_each(head, &adapter->ip_list) {
cur = list_entry(head, struct nx_ip_list, list);
if (cur->ip_addr == ifa->ifa_address)
return;
goto out;
}
cur = kzalloc(sizeof(struct nx_vlan_ip_list), GFP_ATOMIC);
cur = kzalloc(sizeof(struct nx_ip_list), GFP_ATOMIC);
if (cur == NULL)
return;
goto out;
if (dev->priv_flags & IFF_802_1Q_VLAN)
dev = vlan_dev_real_dev(dev);
cur->master = !!netif_is_bond_master(dev);
cur->ip_addr = ifa->ifa_address;
list_add_tail(&cur->list, &adapter->vlan_ip_list);
list_add_tail(&cur->list, &adapter->ip_list);
netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
ret = true;
break;
case NX_IP_DOWN:
list_for_each_entry_safe(cur, tmp_cur,
&adapter->vlan_ip_list, list) {
&adapter->ip_list, list) {
if (cur->ip_addr == ifa->ifa_address) {
list_del(&cur->list);
kfree(cur);
netxen_config_ipaddr(adapter, ifa->ifa_address,
NX_IP_DOWN);
ret = true;
break;
}
}
}
out:
return ret;
}
static void
netxen_config_indev_addr(struct netxen_adapter *adapter,
struct net_device *dev, unsigned long event)
@ -3209,14 +3224,10 @@ netxen_config_indev_addr(struct netxen_adapter *adapter,
for_ifa(indev) {
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);
netxen_list_config_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);
netxen_list_config_ip(adapter, ifa, NX_IP_DOWN);
break;
default:
break;
@ -3231,23 +3242,78 @@ netxen_restore_indev_addr(struct net_device *netdev, unsigned long event)
{
struct netxen_adapter *adapter = netdev_priv(netdev);
struct nx_vlan_ip_list *pos, *tmp_pos;
struct nx_ip_list *pos, *tmp_pos;
unsigned long ip_event;
ip_event = (event == NETDEV_UP) ? NX_IP_UP : NX_IP_DOWN;
netxen_config_indev_addr(adapter, netdev, event);
list_for_each_entry_safe(pos, tmp_pos, &adapter->vlan_ip_list, list) {
list_for_each_entry_safe(pos, tmp_pos, &adapter->ip_list, list) {
netxen_config_ipaddr(adapter, pos->ip_addr, ip_event);
}
}
static inline bool
netxen_config_checkdev(struct net_device *dev)
{
struct netxen_adapter *adapter;
if (!is_netxen_netdev(dev))
return false;
adapter = netdev_priv(dev);
if (!adapter)
return false;
if (!netxen_destip_supported(adapter))
return false;
if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
return false;
return true;
}
/**
* netxen_config_master - configure addresses based on master
* @dev: netxen device
* @event: netdev event
*/
static void netxen_config_master(struct net_device *dev, unsigned long event)
{
struct net_device *master, *slave;
struct netxen_adapter *adapter = netdev_priv(dev);
rcu_read_lock();
master = netdev_master_upper_dev_get_rcu(dev);
/*
* This is the case where the netxen nic is being
* enslaved and is dev_open()ed in bond_enslave()
* Now we should program the bond's (and its vlans')
* addresses in the netxen NIC.
*/
if (master && netif_is_bond_master(master) &&
!netif_is_bond_slave(dev)) {
netxen_config_indev_addr(adapter, master, event);
for_each_netdev_rcu(&init_net, slave)
if (slave->priv_flags & IFF_802_1Q_VLAN &&
vlan_dev_real_dev(slave) == master)
netxen_config_indev_addr(adapter, slave, event);
}
rcu_read_unlock();
/*
* This is the case where the netxen nic is being
* released and is dev_close()ed in bond_release()
* just before IFF_BONDING is stripped.
*/
if (!master && dev->priv_flags & IFF_BONDING)
netxen_free_ip_list(adapter, true);
}
static int netxen_netdev_event(struct notifier_block *this,
unsigned long event, void *ptr)
{
struct netxen_adapter *adapter;
struct net_device *dev = (struct net_device *)ptr;
struct net_device *orig_dev = dev;
struct net_device *slave;
recheck:
if (dev == NULL)
@ -3257,19 +3323,28 @@ recheck:
dev = vlan_dev_real_dev(dev);
goto recheck;
}
if (!is_netxen_netdev(dev))
goto done;
adapter = netdev_priv(dev);
if (!adapter)
goto done;
if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
goto done;
netxen_config_indev_addr(adapter, orig_dev, event);
if (event == NETDEV_UP || event == NETDEV_DOWN) {
/* If this is a bonding device, look for netxen-based slaves*/
if (netif_is_bond_master(dev)) {
rcu_read_lock();
for_each_netdev_in_bond_rcu(dev, slave) {
if (!netxen_config_checkdev(slave))
continue;
adapter = netdev_priv(slave);
netxen_config_indev_addr(adapter,
orig_dev, event);
}
rcu_read_unlock();
} else {
if (!netxen_config_checkdev(dev))
goto done;
adapter = netdev_priv(dev);
/* Act only if the actual netxen is the target */
if (orig_dev == dev)
netxen_config_master(dev, event);
netxen_config_indev_addr(adapter, orig_dev, event);
}
}
done:
return NOTIFY_DONE;
}
@ -3279,12 +3354,12 @@ netxen_inetaddr_event(struct notifier_block *this,
unsigned long event, void *ptr)
{
struct netxen_adapter *adapter;
struct net_device *dev;
struct net_device *dev, *slave;
struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
unsigned long ip_event;
dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
ip_event = (event == NETDEV_UP) ? NX_IP_UP : NX_IP_DOWN;
recheck:
if (dev == NULL)
goto done;
@ -3293,31 +3368,24 @@ recheck:
dev = vlan_dev_real_dev(dev);
goto recheck;
}
if (!is_netxen_netdev(dev))
goto done;
adapter = netdev_priv(dev);
if (!adapter || !netxen_destip_supported(adapter))
goto done;
if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
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;
if (event == NETDEV_UP || event == NETDEV_DOWN) {
/* If this is a bonding device, look for netxen-based slaves*/
if (netif_is_bond_master(dev)) {
rcu_read_lock();
for_each_netdev_in_bond_rcu(dev, slave) {
if (!netxen_config_checkdev(slave))
continue;
adapter = netdev_priv(slave);
netxen_list_config_ip(adapter, ifa, ip_event);
}
rcu_read_unlock();
} else {
if (!netxen_config_checkdev(dev))
goto done;
adapter = netdev_priv(dev);
netxen_list_config_ip(adapter, ifa, ip_event);
}
}
done:
return NOTIFY_DONE;
}
@ -3334,7 +3402,7 @@ static void
netxen_restore_indev_addr(struct net_device *dev, unsigned long event)
{ }
static void
netxen_free_vlan_ip_list(struct netxen_adapter *adapter)
netxen_free_ip_list(struct netxen_adapter *adapter, bool master)
{ }
#endif

8
include/linux/netdevice.h
View File

@ -1617,6 +1617,9 @@ extern seqcount_t devnet_rename_seq; /* Device rename seq */
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 (netdev_master_upper_dev_get_rcu(slave) == 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)
@ -2774,6 +2777,11 @@ static inline void netif_set_gso_max_size(struct net_device *dev,
dev->gso_max_size = size;
}
static inline bool netif_is_bond_master(struct net_device *dev)
{
return dev->flags & IFF_MASTER && dev->priv_flags & IFF_BONDING;
}
static inline bool netif_is_bond_slave(struct net_device *dev)
{
return dev->flags & IFF_SLAVE && dev->priv_flags & IFF_BONDING;