diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/8021q/vlan.c | 30 | ||||
| -rw-r--r-- | net/8021q/vlan.h | 2 | ||||
| -rw-r--r-- | net/8021q/vlan_dev.c | 5 |
3 files changed, 37 insertions, 0 deletions
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c index b934159a6f0..51961300b58 100644 --- a/net/8021q/vlan.c +++ b/net/8021q/vlan.c @@ -382,6 +382,24 @@ static void vlan_sync_address(struct net_device *dev, memcpy(vlan->real_dev_addr, dev->dev_addr, ETH_ALEN); } +static void vlan_transfer_features(struct net_device *dev, + struct net_device *vlandev) +{ + unsigned long old_features = vlandev->features; + + if (dev->features & NETIF_F_VLAN_TSO) { + vlandev->features &= ~VLAN_TSO_FEATURES; + vlandev->features |= dev->features & VLAN_TSO_FEATURES; + } + if (dev->features & NETIF_F_VLAN_CSUM) { + vlandev->features &= ~NETIF_F_ALL_CSUM; + vlandev->features |= dev->features & NETIF_F_ALL_CSUM; + } + + if (old_features != vlandev->features) + netdev_features_change(vlandev); +} + static void __vlan_device_event(struct net_device *dev, unsigned long event) { switch (event) { @@ -448,6 +466,18 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event, } break; + case NETDEV_FEAT_CHANGE: + /* Propagate device features to underlying device */ + for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) { + vlandev = vlan_group_get_device(grp, i); + if (!vlandev) + continue; + + vlan_transfer_features(dev, vlandev); + } + + break; + case NETDEV_DOWN: /* Put all VLANs for this dev in the down state too. */ for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) { diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h index 5229a72c7ea..79625696e86 100644 --- a/net/8021q/vlan.h +++ b/net/8021q/vlan.h @@ -7,6 +7,8 @@ #define VLAN_GRP_HASH_SIZE (1 << VLAN_GRP_HASH_SHIFT) #define VLAN_GRP_HASH_MASK (VLAN_GRP_HASH_SIZE - 1) +#define VLAN_TSO_FEATURES (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_SG) + /* Find a VLAN device by the MAC address of its Ethernet device, and * it's VLAN ID. The default configuration is to have VLAN's scope * to be box-wide, so the MAC will be ignored. The mac will only be diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c index c961f082600..b1cfbaa88db 100644 --- a/net/8021q/vlan_dev.c +++ b/net/8021q/vlan_dev.c @@ -663,6 +663,11 @@ static int vlan_dev_init(struct net_device *dev) (1<<__LINK_STATE_DORMANT))) | (1<<__LINK_STATE_PRESENT); + if (real_dev->features & NETIF_F_VLAN_TSO) + dev->features |= real_dev->features & VLAN_TSO_FEATURES; + if (real_dev->features & NETIF_F_VLAN_CSUM) + dev->features |= real_dev->features & NETIF_F_ALL_CSUM; + /* ipv6 shared card related stuff */ dev->dev_id = real_dev->dev_id; |