summaryrefslogtreecommitdiffstats
path: root/drivers/net/macvlan.c
diff options
context:
space:
mode:
authorJohn Fastabend <john.r.fastabend@intel.com>2012-04-15 06:44:37 +0000
committerDavid S. Miller <davem@davemloft.net>2012-04-15 13:06:05 -0400
commitdf8ef8f3aaa6692970a436204c4429210addb23a (patch)
treee214674aeafc01e140cc9d2eb24e5d6fb37b422a /drivers/net/macvlan.c
parent2b2027124ff1bc420d4a86e37a57feae5e356d2d (diff)
downloadop-kernel-dev-df8ef8f3aaa6692970a436204c4429210addb23a.zip
op-kernel-dev-df8ef8f3aaa6692970a436204c4429210addb23a.tar.gz
macvlan: add FDB bridge ops and macvlan flags
This adds FDB bridge ops to the macvlan device passthru mode. Additionally a flags field was added and a NOPROMISC bit to allow users to use passthru mode without the driver calling dev_set_promiscuity(). The flags field is a u16 placed in a 4 byte hole (consuming 2 bytes) of the macvlan_dev struct. We want to do this so that the macvlan driver or stack above the macvlan driver does not have to process every packet. For the use case where we know all the MAC addresses of the endstations above us this works well. This patch is a result of Roopa Prabhu's work. Follow up patches are needed for VEPA and VEB macvlan modes. v2: Change from distinct nopromisc mode to a flags field to configure this. This avoids the tendency to add a new mode every time we need some slightly different behavior. v3: fix error in dev_set_promiscuity and add change and get link attributes for flags. CC: Roopa Prabhu <roprabhu@cisco.com> CC: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: John Fastabend <john.r.fastabend@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/macvlan.c')
-rw-r--r--drivers/net/macvlan.c73
1 files changed, 67 insertions, 6 deletions
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index b17fc90..9653ed6 100644
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -312,7 +312,8 @@ static int macvlan_open(struct net_device *dev)
int err;
if (vlan->port->passthru) {
- dev_set_promiscuity(lowerdev, 1);
+ if (!(vlan->flags & MACVLAN_FLAG_NOPROMISC))
+ dev_set_promiscuity(lowerdev, 1);
goto hash_add;
}
@@ -344,12 +345,15 @@ static int macvlan_stop(struct net_device *dev)
struct macvlan_dev *vlan = netdev_priv(dev);
struct net_device *lowerdev = vlan->lowerdev;
+ dev_uc_unsync(lowerdev, dev);
+ dev_mc_unsync(lowerdev, dev);
+
if (vlan->port->passthru) {
- dev_set_promiscuity(lowerdev, -1);
+ if (!(vlan->flags & MACVLAN_FLAG_NOPROMISC))
+ dev_set_promiscuity(lowerdev, -1);
goto hash_del;
}
- dev_mc_unsync(lowerdev, dev);
if (dev->flags & IFF_ALLMULTI)
dev_set_allmulti(lowerdev, -1);
@@ -399,10 +403,11 @@ static void macvlan_change_rx_flags(struct net_device *dev, int change)
dev_set_allmulti(lowerdev, dev->flags & IFF_ALLMULTI ? 1 : -1);
}
-static void macvlan_set_multicast_list(struct net_device *dev)
+static void macvlan_set_mac_lists(struct net_device *dev)
{
struct macvlan_dev *vlan = netdev_priv(dev);
+ dev_uc_sync(vlan->lowerdev, dev);
dev_mc_sync(vlan->lowerdev, dev);
}
@@ -542,6 +547,43 @@ static int macvlan_vlan_rx_kill_vid(struct net_device *dev,
return 0;
}
+static int macvlan_fdb_add(struct ndmsg *ndm,
+ struct net_device *dev,
+ unsigned char *addr,
+ u16 flags)
+{
+ struct macvlan_dev *vlan = netdev_priv(dev);
+ int err = -EINVAL;
+
+ if (!vlan->port->passthru)
+ return -EOPNOTSUPP;
+
+ if (is_unicast_ether_addr(addr))
+ err = dev_uc_add_excl(dev, addr);
+ else if (is_multicast_ether_addr(addr))
+ err = dev_mc_add_excl(dev, addr);
+
+ return err;
+}
+
+static int macvlan_fdb_del(struct ndmsg *ndm,
+ struct net_device *dev,
+ unsigned char *addr)
+{
+ struct macvlan_dev *vlan = netdev_priv(dev);
+ int err = -EINVAL;
+
+ if (!vlan->port->passthru)
+ return -EOPNOTSUPP;
+
+ if (is_unicast_ether_addr(addr))
+ err = dev_uc_del(dev, addr);
+ else if (is_multicast_ether_addr(addr))
+ err = dev_mc_del(dev, addr);
+
+ return err;
+}
+
static void macvlan_ethtool_get_drvinfo(struct net_device *dev,
struct ethtool_drvinfo *drvinfo)
{
@@ -572,11 +614,14 @@ static const struct net_device_ops macvlan_netdev_ops = {
.ndo_change_mtu = macvlan_change_mtu,
.ndo_change_rx_flags = macvlan_change_rx_flags,
.ndo_set_mac_address = macvlan_set_mac_address,
- .ndo_set_rx_mode = macvlan_set_multicast_list,
+ .ndo_set_rx_mode = macvlan_set_mac_lists,
.ndo_get_stats64 = macvlan_dev_get_stats64,
.ndo_validate_addr = eth_validate_addr,
.ndo_vlan_rx_add_vid = macvlan_vlan_rx_add_vid,
.ndo_vlan_rx_kill_vid = macvlan_vlan_rx_kill_vid,
+ .ndo_fdb_add = macvlan_fdb_add,
+ .ndo_fdb_del = macvlan_fdb_del,
+ .ndo_fdb_dump = ndo_dflt_fdb_dump,
};
void macvlan_common_setup(struct net_device *dev)
@@ -711,6 +756,9 @@ int macvlan_common_newlink(struct net *src_net, struct net_device *dev,
if (data && data[IFLA_MACVLAN_MODE])
vlan->mode = nla_get_u32(data[IFLA_MACVLAN_MODE]);
+ if (data && data[IFLA_MACVLAN_FLAGS])
+ vlan->flags = nla_get_u16(data[IFLA_MACVLAN_FLAGS]);
+
if (vlan->mode == MACVLAN_MODE_PASSTHRU) {
if (port->count)
return -EINVAL;
@@ -760,6 +808,16 @@ static int macvlan_changelink(struct net_device *dev,
struct macvlan_dev *vlan = netdev_priv(dev);
if (data && data[IFLA_MACVLAN_MODE])
vlan->mode = nla_get_u32(data[IFLA_MACVLAN_MODE]);
+ if (data && data[IFLA_MACVLAN_FLAGS]) {
+ __u16 flags = nla_get_u16(data[IFLA_MACVLAN_FLAGS]);
+ bool promisc = (flags ^ vlan->flags) & MACVLAN_FLAG_NOPROMISC;
+
+ if (promisc && (flags & MACVLAN_FLAG_NOPROMISC))
+ dev_set_promiscuity(vlan->lowerdev, -1);
+ else if (promisc && !(flags & MACVLAN_FLAG_NOPROMISC))
+ dev_set_promiscuity(vlan->lowerdev, 1);
+ vlan->flags = flags;
+ }
return 0;
}
@@ -775,6 +833,8 @@ static int macvlan_fill_info(struct sk_buff *skb,
if (nla_put_u32(skb, IFLA_MACVLAN_MODE, vlan->mode))
goto nla_put_failure;
+ if (nla_put_u16(skb, IFLA_MACVLAN_FLAGS, vlan->flags))
+ goto nla_put_failure;
return 0;
nla_put_failure:
@@ -782,7 +842,8 @@ nla_put_failure:
}
static const struct nla_policy macvlan_policy[IFLA_MACVLAN_MAX + 1] = {
- [IFLA_MACVLAN_MODE] = { .type = NLA_U32 },
+ [IFLA_MACVLAN_MODE] = { .type = NLA_U32 },
+ [IFLA_MACVLAN_FLAGS] = { .type = NLA_U16 },
};
int macvlan_link_register(struct rtnl_link_ops *ops)
OpenPOWER on IntegriCloud