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Merge branch 'vlan_offloads'

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Vlad Yasevich says:

====================
Audit all drivers for correct vlan_features.

Some drivers set vlan acceleration features in vlan_features.  This causes
issues with Q-in-Q/802.1ad configurations.

Audit all the drivers for correct vlan_features.  Fix broken ones.
Add a warning to vlan code to help catch future offenders.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2014-03-28 17:17:16 -04:00
commit 5f2feca20e
5 changed files with 19 additions and 3 deletions
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4
drivers/net/ethernet/qlogic/qlge/qlge_main.c
View file

@ -4765,7 +4765,9 @@ static int qlge_probe(struct pci_dev *pdev,
ndev->features = ndev->hw_features;
ndev->vlan_features = ndev->hw_features;
/* vlan gets same features (except vlan filter) */
ndev->vlan_features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
ndev->vlan_features &= ~(NETIF_F_HW_VLAN_CTAG_FILTER |
NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_HW_VLAN_CTAG_RX);
if (test_bit(QL_DMA64, &qdev->flags))
ndev->features |= NETIF_F_HIGHDMA;

3
drivers/net/ifb.c
View file

@ -180,7 +180,8 @@ static void ifb_setup(struct net_device *dev)
dev->tx_queue_len = TX_Q_LIMIT;
dev->features |= IFB_FEATURES;
dev->vlan_features |= IFB_FEATURES;
dev->vlan_features |= IFB_FEATURES & ~(NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_HW_VLAN_STAG_TX);
dev->flags |= IFF_NOARP;
dev->flags &= ~IFF_MULTICAST;

5
drivers/net/veth.c
View file

@ -286,7 +286,10 @@ static void veth_setup(struct net_device *dev)
dev->features |= NETIF_F_LLTX;
dev->features |= VETH_FEATURES;
dev->vlan_features = dev->features &
~(NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX);
~(NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_HW_VLAN_STAG_TX |
NETIF_F_HW_VLAN_CTAG_RX |
NETIF_F_HW_VLAN_STAG_RX);
dev->destructor = veth_dev_free;
dev->hw_features = VETH_FEATURES;

7
include/linux/netdev_features.h
View file

@ -163,4 +163,11 @@ enum {
/* changeable features with no special hardware requirements */
#define NETIF_F_SOFT_FEATURES (NETIF_F_GSO | NETIF_F_GRO)
#define NETIF_F_VLAN_FEATURES (NETIF_F_HW_VLAN_CTAG_FILTER | \
NETIF_F_HW_VLAN_CTAG_RX | \
NETIF_F_HW_VLAN_CTAG_TX | \
NETIF_F_HW_VLAN_STAG_FILTER | \
NETIF_F_HW_VLAN_STAG_RX | \
NETIF_F_HW_VLAN_STAG_TX)
#endif /* _LINUX_NETDEV_FEATURES_H */

3
net/8021q/vlan_dev.c
View file

@ -578,6 +578,9 @@ static int vlan_dev_init(struct net_device *dev)
dev->features |= real_dev->vlan_features | NETIF_F_LLTX;
dev->gso_max_size = real_dev->gso_max_size;
if (dev->features & NETIF_F_VLAN_FEATURES)
netdev_warn(real_dev, "VLAN features are set incorrectly. Q-in-Q configurations may not work correctly.\n");
/* ipv6 shared card related stuff */
dev->dev_id = real_dev->dev_id;