forked from torvalds/linux
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
macvlan: allow multiple driver backends
This makes it possible to hook into the macvlan driver from another kernel module. In particular, the goal is to extend it with the macvtap backend that provides a tun/tap compatible interface directly on the macvlan device. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
- Loading branch information
Showing
2 changed files
with
119 additions
and
64 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,6 +1,76 @@ | ||
| #ifndef _LINUX_IF_MACVLAN_H | ||
| #define _LINUX_IF_MACVLAN_H | ||
|
|
||
| #include <linux/if_link.h> | ||
| #include <linux/list.h> | ||
| #include <linux/netdevice.h> | ||
| #include <linux/netlink.h> | ||
| #include <net/netlink.h> | ||
|
|
||
| struct macvlan_port; | ||
| struct macvtap_queue; | ||
|
|
||
| /** | ||
| * struct macvlan_rx_stats - MACVLAN percpu rx stats | ||
| * @rx_packets: number of received packets | ||
| * @rx_bytes: number of received bytes | ||
| * @multicast: number of received multicast packets | ||
| * @rx_errors: number of errors | ||
| */ | ||
| struct macvlan_rx_stats { | ||
| unsigned long rx_packets; | ||
| unsigned long rx_bytes; | ||
| unsigned long multicast; | ||
| unsigned long rx_errors; | ||
| }; | ||
|
|
||
| struct macvlan_dev { | ||
| struct net_device *dev; | ||
| struct list_head list; | ||
| struct hlist_node hlist; | ||
| struct macvlan_port *port; | ||
| struct net_device *lowerdev; | ||
| struct macvlan_rx_stats *rx_stats; | ||
| enum macvlan_mode mode; | ||
| int (*receive)(struct sk_buff *skb); | ||
| int (*forward)(struct net_device *dev, struct sk_buff *skb); | ||
| }; | ||
|
|
||
| static inline void macvlan_count_rx(const struct macvlan_dev *vlan, | ||
| unsigned int len, bool success, | ||
| bool multicast) | ||
| { | ||
| struct macvlan_rx_stats *rx_stats; | ||
|
|
||
| rx_stats = per_cpu_ptr(vlan->rx_stats, smp_processor_id()); | ||
| if (likely(success)) { | ||
| rx_stats->rx_packets++;; | ||
| rx_stats->rx_bytes += len; | ||
| if (multicast) | ||
| rx_stats->multicast++; | ||
| } else { | ||
| rx_stats->rx_errors++; | ||
| } | ||
| } | ||
|
|
||
| extern int macvlan_common_newlink(struct net *src_net, struct net_device *dev, | ||
| struct nlattr *tb[], struct nlattr *data[], | ||
| int (*receive)(struct sk_buff *skb), | ||
| int (*forward)(struct net_device *dev, | ||
| struct sk_buff *skb)); | ||
|
|
||
| extern void macvlan_count_rx(const struct macvlan_dev *vlan, | ||
| unsigned int len, bool success, | ||
| bool multicast); | ||
|
|
||
| extern void macvlan_dellink(struct net_device *dev, struct list_head *head); | ||
|
|
||
| extern int macvlan_link_register(struct rtnl_link_ops *ops); | ||
|
|
||
| extern netdev_tx_t macvlan_start_xmit(struct sk_buff *skb, | ||
| struct net_device *dev); | ||
|
|
||
|
|
||
| extern struct sk_buff *(*macvlan_handle_frame_hook)(struct sk_buff *); | ||
|
|
||
| #endif /* _LINUX_IF_MACVLAN_H */ |