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macvtap: add TUNSETQUEUE ioctl

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This patch adds TUNSETQUEUE ioctl to let userspace can temporarily disable or
enable a queue of macvtap. This is used to be compatible at API layer of tuntap
to simplify the userspace to manage the queues. This is done through introducing
a linked list to track all taps while using vlan->taps array to only track
active taps.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jason Wang 2013-06-05 23:54:39 +00:00 • committed by David S. Miller
parent 376b1aabe1
commit 815f236d62
2 changed files with 120 additions and 19 deletions
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4
include/linux/if_macvlan.h
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@ -69,8 +69,12 @@ struct macvlan_dev {
u16 flags;
int (*receive)(struct sk_buff *skb);
int (*forward)(struct net_device *dev, struct sk_buff *skb);
/* This array tracks active taps. */
struct macvtap_queue *taps[MAX_MACVTAP_QUEUES];
/* This list tracks all taps (both enabled and disabled) */
struct list_head queue_list;
int numvtaps;
int numqueues;
int minor;
};