Message ID | 20120319065157.10959.32215.stgit@jf-dev1-dcblab |
---|---|
State | Deferred, archived |
Delegated to: | David Miller |
Headers | show |
On 3/18/12 11:51 PM, "John Fastabend" <john.r.fastabend@intel.com> wrote: > This adds a dev_uc_add_excl() call similar to the original > dev_uc_add() except it sets the global bit. With this > change the reference count will not be bumped and -EEXIST > will be returned if a duplicate address exists. > > This is useful for drivers that support SR-IOV and want > to manage the unicast lists. > > Signed-off-by: John Fastabend <john.r.fastabend@intel.com> > --- > > include/linux/netdevice.h | 1 + > net/core/dev_addr_lists.c | 19 +++++++++++++++++++ > 2 files changed, 20 insertions(+), 0 deletions(-) > > diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h > index 4208901..5e43cec 100644 > --- a/include/linux/netdevice.h > +++ b/include/linux/netdevice.h > @@ -2571,6 +2571,7 @@ extern int dev_addr_init(struct net_device *dev); > > /* Functions used for unicast addresses handling */ > extern int dev_uc_add(struct net_device *dev, unsigned char *addr); > +extern int dev_uc_add_excl(struct net_device *dev, unsigned char *addr); > extern int dev_uc_del(struct net_device *dev, unsigned char *addr); > extern int dev_uc_sync(struct net_device *to, struct net_device *from); > extern void dev_uc_unsync(struct net_device *to, struct net_device *from); > diff --git a/net/core/dev_addr_lists.c b/net/core/dev_addr_lists.c > index 29c07fe..c7d27ad 100644 > --- a/net/core/dev_addr_lists.c > +++ b/net/core/dev_addr_lists.c > @@ -377,6 +377,25 @@ EXPORT_SYMBOL(dev_addr_del_multiple); > */ > > /** > + * dev_uc_add_excl - Add a global secondary unicast address > + * @dev: device > + * @addr: address to add > + */ > +int dev_uc_add_excl(struct net_device *dev, unsigned char *addr) > +{ > + int err; > + > + netif_addr_lock_bh(dev); > + err = __hw_addr_add_ex(&dev->uc, addr, dev->addr_len, > + NETDEV_HW_ADDR_T_UNICAST, true); > + if (!err) > + __dev_set_rx_mode(dev); > + netif_addr_unlock_bh(dev); > + return err; > +} > +EXPORT_SYMBOL(dev_uc_add_excl); > + > +/** ACK. We will need a similar function for multicast as well ?. Macvlan could use it. Thanks, Roopa -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 4208901..5e43cec 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2571,6 +2571,7 @@ extern int dev_addr_init(struct net_device *dev); /* Functions used for unicast addresses handling */ extern int dev_uc_add(struct net_device *dev, unsigned char *addr); +extern int dev_uc_add_excl(struct net_device *dev, unsigned char *addr); extern int dev_uc_del(struct net_device *dev, unsigned char *addr); extern int dev_uc_sync(struct net_device *to, struct net_device *from); extern void dev_uc_unsync(struct net_device *to, struct net_device *from); diff --git a/net/core/dev_addr_lists.c b/net/core/dev_addr_lists.c index 29c07fe..c7d27ad 100644 --- a/net/core/dev_addr_lists.c +++ b/net/core/dev_addr_lists.c @@ -377,6 +377,25 @@ EXPORT_SYMBOL(dev_addr_del_multiple); */ /** + * dev_uc_add_excl - Add a global secondary unicast address + * @dev: device + * @addr: address to add + */ +int dev_uc_add_excl(struct net_device *dev, unsigned char *addr) +{ + int err; + + netif_addr_lock_bh(dev); + err = __hw_addr_add_ex(&dev->uc, addr, dev->addr_len, + NETDEV_HW_ADDR_T_UNICAST, true); + if (!err) + __dev_set_rx_mode(dev); + netif_addr_unlock_bh(dev); + return err; +} +EXPORT_SYMBOL(dev_uc_add_excl); + +/** * dev_uc_add - Add a secondary unicast address * @dev: device * @addr: address to add
This adds a dev_uc_add_excl() call similar to the original dev_uc_add() except it sets the global bit. With this change the reference count will not be bumped and -EEXIST will be returned if a duplicate address exists. This is useful for drivers that support SR-IOV and want to manage the unicast lists. Signed-off-by: John Fastabend <john.r.fastabend@intel.com> --- include/linux/netdevice.h | 1 + net/core/dev_addr_lists.c | 19 +++++++++++++++++++ 2 files changed, 20 insertions(+), 0 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html