diff options
Diffstat (limited to 'drivers/net/macvlan.c')
| -rw-r--r-- | drivers/net/macvlan.c | 56 |
1 files changed, 50 insertions, 6 deletions
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c index 68a43fe602e7..defcd8a85744 100644 --- a/drivers/net/macvlan.c +++ b/drivers/net/macvlan.c @@ -29,6 +29,7 @@ #include <linux/if_vlan.h> #include <linux/if_link.h> #include <linux/if_macvlan.h> +#include <linux/hash.h> #include <net/rtnetlink.h> #include <net/xfrm.h> @@ -126,6 +127,21 @@ static int macvlan_broadcast_one(struct sk_buff *skb, return vlan->receive(skb); } +static u32 macvlan_hash_mix(const struct macvlan_dev *vlan) +{ + return (u32)(((unsigned long)vlan) >> L1_CACHE_SHIFT); +} + + +static unsigned int mc_hash(const struct macvlan_dev *vlan, + const unsigned char *addr) +{ + u32 val = __get_unaligned_cpu32(addr + 2); + + val ^= macvlan_hash_mix(vlan); + return hash_32(val, MACVLAN_MC_FILTER_BITS); +} + static void macvlan_broadcast(struct sk_buff *skb, const struct macvlan_port *port, struct net_device *src, @@ -137,6 +153,7 @@ static void macvlan_broadcast(struct sk_buff *skb, struct sk_buff *nskb; unsigned int i; int err; + unsigned int hash; if (skb->protocol == htons(ETH_P_PAUSE)) return; @@ -146,6 +163,9 @@ static void macvlan_broadcast(struct sk_buff *skb, if (vlan->dev == src || !(vlan->mode & mode)) continue; + hash = mc_hash(vlan, eth->h_dest); + if (!test_bit(hash, vlan->mc_filter)) + continue; nskb = skb_clone(skb, GFP_ATOMIC); err = macvlan_broadcast_one(nskb, vlan, eth, mode == MACVLAN_MODE_BRIDGE); @@ -375,7 +395,6 @@ static int macvlan_set_mac_address(struct net_device *dev, void *p) if (!(dev->flags & IFF_UP)) { /* Just copy in the new address */ - dev->addr_assign_type &= ~NET_ADDR_RANDOM; memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); } else { /* Rehash and update the device filters */ @@ -406,6 +425,21 @@ static void macvlan_set_mac_lists(struct net_device *dev) { struct macvlan_dev *vlan = netdev_priv(dev); + if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) { + bitmap_fill(vlan->mc_filter, MACVLAN_MC_FILTER_SZ); + } else { + struct netdev_hw_addr *ha; + DECLARE_BITMAP(filter, MACVLAN_MC_FILTER_SZ); + + bitmap_zero(filter, MACVLAN_MC_FILTER_SZ); + netdev_for_each_mc_addr(ha, dev) { + __set_bit(mc_hash(vlan, ha->addr), filter); + } + + __set_bit(mc_hash(vlan, dev->broadcast), filter); + + bitmap_copy(vlan->mc_filter, filter, MACVLAN_MC_FILTER_SZ); + } dev_uc_sync(vlan->lowerdev, dev); dev_mc_sync(vlan->lowerdev, dev); } @@ -565,7 +599,7 @@ static int macvlan_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], return err; } -static int macvlan_fdb_del(struct ndmsg *ndm, +static int macvlan_fdb_del(struct ndmsg *ndm, struct nlattr *tb[], struct net_device *dev, const unsigned char *addr) { @@ -586,8 +620,8 @@ static int macvlan_fdb_del(struct ndmsg *ndm, static void macvlan_ethtool_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *drvinfo) { - snprintf(drvinfo->driver, 32, "macvlan"); - snprintf(drvinfo->version, 32, "0.1"); + strlcpy(drvinfo->driver, "macvlan", sizeof(drvinfo->driver)); + strlcpy(drvinfo->version, "0.1", sizeof(drvinfo->version)); } static int macvlan_ethtool_get_settings(struct net_device *dev, @@ -765,16 +799,22 @@ int macvlan_common_newlink(struct net *src_net, struct net_device *dev, memcpy(dev->dev_addr, lowerdev->dev_addr, ETH_ALEN); } + err = netdev_upper_dev_link(lowerdev, dev); + if (err) + goto destroy_port; + port->count += 1; err = register_netdevice(dev); if (err < 0) - goto destroy_port; + goto upper_dev_unlink; list_add_tail(&vlan->list, &port->vlans); netif_stacked_transfer_operstate(lowerdev, dev); return 0; +upper_dev_unlink: + netdev_upper_dev_unlink(lowerdev, dev); destroy_port: port->count -= 1; if (!port->count) @@ -798,6 +838,7 @@ void macvlan_dellink(struct net_device *dev, struct list_head *head) list_del(&vlan->list); unregister_netdevice_queue(dev, head); + netdev_upper_dev_unlink(vlan->lowerdev, dev); } EXPORT_SYMBOL_GPL(macvlan_dellink); @@ -822,7 +863,10 @@ static int macvlan_changelink(struct net_device *dev, static size_t macvlan_get_size(const struct net_device *dev) { - return nla_total_size(4); + return (0 + + nla_total_size(4) /* IFLA_MACVLAN_MODE */ + + nla_total_size(2) /* IFLA_MACVLAN_FLAGS */ + ); } static int macvlan_fill_info(struct sk_buff *skb, |