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vlan: move struct vlan_dev_info to private header 

Hide struct vlan_dev_info from drivers to prevent them from growing
more creative ways to use it. Provide accessors for the two drivers
that currently use it.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2008-07-08 03:23:57 -07:00 committed by David S. Miller
parent 7750f403cb
commit 22d1ba74bb
7 changed files with 80 additions and 53 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/cxgb3/l2t.c
View File

@ -337,7 +337,7 @@ struct l2t_entry *t3_l2t_get(struct t3cdev *cdev, struct neighbour *neigh,
atomic_set(&e->refcnt, 1);
neigh_replace(e, neigh);
if (neigh->dev->priv_flags & IFF_802_1Q_VLAN)
e->vlan = vlan_dev_info(neigh->dev)->vlan_id;
e->vlan = vlan_dev_vlan_id(neigh->dev);
else
e->vlan = VLAN_NONE;
spin_unlock(&e->lock);

4
drivers/s390/net/qeth_l3_main.c
View File

@ -2020,7 +2020,7 @@ static int qeth_l3_verify_vlan_dev(struct net_device *dev,
}
}
if (rc && !(netdev_priv(vlan_dev_info(dev)->real_dev) == (void *)card))
if (rc && !(netdev_priv(vlan_dev_real_dev(dev)) == (void *)card))
return 0;
return rc;
@ -2056,7 +2056,7 @@ static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
if (rc == QETH_REAL_CARD)
card = netdev_priv(dev);
else if (rc == QETH_VLAN_CARD)
card = netdev_priv(vlan_dev_info(dev)->real_dev);
card = netdev_priv(vlan_dev_real_dev(dev));
if (card && card->options.layer2)
card = NULL;
QETH_DBF_TEXT_(TRACE, 4, "%d", rc);

56
include/linux/if_vlan.h
View File

@ -109,47 +109,6 @@ static inline void vlan_group_set_device(struct vlan_group *vg,
array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] = dev;
}
struct vlan_priority_tci_mapping {
u32 priority;
unsigned short vlan_qos; /* This should be shifted when first set, so we only do it
* at provisioning time.
* ((skb->priority << 13) & 0xE000)
*/
struct vlan_priority_tci_mapping *next;
};
/* Holds information that makes sense if this device is a VLAN device. */
struct vlan_dev_info {
/** This will be the mapping that correlates skb->priority to
* 3 bits of VLAN QOS tags...
*/
unsigned int nr_ingress_mappings;
u32 ingress_priority_map[8];
unsigned int nr_egress_mappings;
struct vlan_priority_tci_mapping *egress_priority_map[16]; /* hash table */
unsigned short vlan_id; /* The VLAN Identifier for this interface. */
unsigned short flags; /* (1 << 0) re_order_header This option will cause the
* VLAN code to move around the ethernet header on
* ingress to make the skb look **exactly** like it
* came in from an ethernet port. This destroys some of
* the VLAN information in the skb, but it fixes programs
* like DHCP that use packet-filtering and don't understand
* 802.1Q
*/
struct net_device *real_dev; /* the underlying device/interface */
unsigned char real_dev_addr[ETH_ALEN];
struct proc_dir_entry *dent; /* Holds the proc data */
unsigned long cnt_inc_headroom_on_tx; /* How many times did we have to grow the skb on TX. */
unsigned long cnt_encap_on_xmit; /* How many times did we have to encapsulate the skb on TX. */
};
static inline struct vlan_dev_info *vlan_dev_info(const struct net_device *dev)
{
return netdev_priv(dev);
}
/* VLAN tx hw acceleration helpers. */
struct vlan_skb_tx_cookie {
u32 magic;
@ -163,9 +122,24 @@ struct vlan_skb_tx_cookie {
#define vlan_tx_tag_get(__skb) (VLAN_TX_SKB_CB(__skb)->vlan_tag)
#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
extern struct net_device *vlan_dev_real_dev(const struct net_device *dev);
extern u16 vlan_dev_vlan_id(const struct net_device *dev);
extern int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp,
unsigned short vlan_tag, int polling);
#else
static inline struct net_device *vlan_dev_real_dev(const struct net_device *dev)
{
BUG();
return NULL;
}
static inline u16 vlan_dev_vlan_id(const struct net_device *dev)
{
BUG();
return 0;
}
static inline int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp,
unsigned short vlan_tag, int polling)
{

4
net/8021q/vlan.c
View File

@ -543,7 +543,6 @@ static struct notifier_block vlan_notifier_block __read_mostly = {
static int vlan_ioctl_handler(struct net *net, void __user *arg)
{
int err;
unsigned short vid = 0;
struct vlan_ioctl_args args;
struct net_device *dev = NULL;
@ -644,8 +643,7 @@ static int vlan_ioctl_handler(struct net *net, void __user *arg)
case GET_VLAN_VID_CMD:
err = 0;
vlan_dev_get_vid(dev, &vid);
args.u.VID = vid;
args.u.VID = vlan_dev_vlan_id(dev);
if (copy_to_user(arg, &args,
sizeof(struct vlan_ioctl_args)))
err = -EFAULT;

50
net/8021q/vlan.h
View File

@ -3,6 +3,55 @@
#include <linux/if_vlan.h>
/**
* struct vlan_priority_tci_mapping - vlan egress priority mappings
* @priority: skb priority
* @vlan_qos: vlan priority: (skb->priority << 13) & 0xE000
* @next: pointer to next struct
*/
struct vlan_priority_tci_mapping {
u32 priority;
unsigned short vlan_qos;
struct vlan_priority_tci_mapping *next;
};
/**
* struct vlan_dev_info - VLAN private device data
* @nr_ingress_mappings: number of ingress priority mappings
* @ingress_priority_map: ingress priority mappings
* @nr_egress_mappings: number of egress priority mappings
* @egress_priority_map: hash of egress priority mappings
* @vlan_id: VLAN identifier
* @flags: device flags
* @real_dev: underlying netdevice
* @real_dev_addr: address of underlying netdevice
* @dent: proc dir entry
* @cnt_inc_headroom_on_tx: statistic - number of skb expansions on TX
* @cnt_encap_on_xmit: statistic - number of skb encapsulations on TX
*/
struct vlan_dev_info {
unsigned int nr_ingress_mappings;
u32 ingress_priority_map[8];
unsigned int nr_egress_mappings;
struct vlan_priority_tci_mapping *egress_priority_map[16];
unsigned short vlan_id;
unsigned short flags;
struct net_device *real_dev;
unsigned char real_dev_addr[ETH_ALEN];
struct proc_dir_entry *dent;
unsigned long cnt_inc_headroom_on_tx;
unsigned long cnt_encap_on_xmit;
};
static inline struct vlan_dev_info *vlan_dev_info(const struct net_device *dev)
{
return netdev_priv(dev);
}
#define VLAN_GRP_HASH_SHIFT 5
#define VLAN_GRP_HASH_SIZE (1 << VLAN_GRP_HASH_SHIFT)
#define VLAN_GRP_HASH_MASK (VLAN_GRP_HASH_SIZE - 1)
@ -30,7 +79,6 @@ int vlan_dev_set_egress_priority(const struct net_device *dev,
u32 skb_prio, short vlan_prio);
int vlan_dev_change_flags(const struct net_device *dev, u32 flag, u32 mask);
void vlan_dev_get_realdev_name(const struct net_device *dev, char *result);
void vlan_dev_get_vid(const struct net_device *dev, unsigned short *result);
int vlan_check_real_dev(struct net_device *real_dev, unsigned short vlan_id);
void vlan_setup(struct net_device *dev);

12
net/8021q/vlan_core.c
View File

@ -46,3 +46,15 @@ int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp,
return (polling ? netif_receive_skb(skb) : netif_rx(skb));
}
EXPORT_SYMBOL(__vlan_hwaccel_rx);
struct net_device *vlan_dev_real_dev(const struct net_device *dev)
{
return vlan_dev_info(dev)->real_dev;
}
EXPORT_SYMBOL_GPL(vlan_dev_real_dev);
u16 vlan_dev_vlan_id(const struct net_device *dev)
{
return vlan_dev_info(dev)->vlan_id;
}
EXPORT_SYMBOL_GPL(vlan_dev_vlan_id);

5
net/8021q/vlan_dev.c
View File

@ -531,11 +531,6 @@ void vlan_dev_get_realdev_name(const struct net_device *dev, char *result)
strncpy(result, vlan_dev_info(dev)->real_dev->name, 23);
}
void vlan_dev_get_vid(const struct net_device *dev, unsigned short *result)
{
*result = vlan_dev_info(dev)->vlan_id;
}
static int vlan_dev_open(struct net_device *dev)
{
struct vlan_dev_info *vlan = vlan_dev_info(dev);