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gerrit-public.fairphone.software / kernel / msm-4.9 / 7686d1cc5ed0932a533a5acbc3888b48de63bef8 / . / include / linux / if_macvlan.h
blob: e28b2e4959d44fb269a06c443b8066a1f49d58cb [file] [log] [blame]
Patrick McHardyb863ceb2007-07-14 18:55:06 -0700[diff] [blame]1#ifndef _LINUX_IF_MACVLAN_H
2#define _LINUX_IF_MACVLAN_H
3
Arnd Bergmannfc0663d2010-01-30 12:23:40 +0000[diff] [blame]4#include <linux/if_link.h>
5#include <linux/list.h>
6#include <linux/netdevice.h>
7#include <linux/netlink.h>
8#include <net/netlink.h>
Eric Dumazetbc661542010-06-24 00:54:21 +0000[diff] [blame]9#include <linux/u64_stats_sync.h>
Arnd Bergmannfc0663d2010-01-30 12:23:40 +0000[diff] [blame]10
Arnd Bergmann501c7742010-02-18 05:46:50 +0000[diff] [blame]11#if defined(CONFIG_MACVTAP) || defined(CONFIG_MACVTAP_MODULE)
12struct socket *macvtap_get_socket(struct file *);
13#else
14#include <linux/err.h>
15#include <linux/errno.h>
16struct file;
17struct socket;
18static inline struct socket *macvtap_get_socket(struct file *f)
19{
20 return ERR_PTR(-EINVAL);
21}
22#endif /* CONFIG_MACVTAP */
23
Arnd Bergmannfc0663d2010-01-30 12:23:40 +0000[diff] [blame]24struct macvlan_port;
25struct macvtap_queue;
26
27/**
Eric Dumazet8ffab512010-11-10 21:14:04 +0000[diff] [blame]28 * struct macvlan_pcpu_stats - MACVLAN percpu stats
Arnd Bergmannfc0663d2010-01-30 12:23:40 +0000[diff] [blame]29 * @rx_packets: number of received packets
30 * @rx_bytes: number of received bytes
Eric Dumazetbc661542010-06-24 00:54:21 +0000[diff] [blame]31 * @rx_multicast: number of received multicast packets
Eric Dumazet8ffab512010-11-10 21:14:04 +0000[diff] [blame]32 * @tx_packets: number of transmitted packets
33 * @tx_bytes: number of transmitted bytes
Eric Dumazetbc661542010-06-24 00:54:21 +0000[diff] [blame]34 * @syncp: synchronization point for 64bit counters
Eric Dumazet8ffab512010-11-10 21:14:04 +0000[diff] [blame]35 * @rx_errors: number of rx errors
36 * @tx_dropped: number of tx dropped packets
Arnd Bergmannfc0663d2010-01-30 12:23:40 +0000[diff] [blame]37 */
Eric Dumazet8ffab512010-11-10 21:14:04 +0000[diff] [blame]38struct macvlan_pcpu_stats {
Eric Dumazetbc661542010-06-24 00:54:21 +0000[diff] [blame]39 u64 rx_packets;
40 u64 rx_bytes;
41 u64 rx_multicast;
Eric Dumazet8ffab512010-11-10 21:14:04 +0000[diff] [blame]42 u64 tx_packets;
43 u64 tx_bytes;
Eric Dumazetbc661542010-06-24 00:54:21 +0000[diff] [blame]44 struct u64_stats_sync syncp;
Eric Dumazet8ffab512010-11-10 21:14:04 +0000[diff] [blame]45 u32 rx_errors;
46 u32 tx_dropped;
Arnd Bergmannfc0663d2010-01-30 12:23:40 +0000[diff] [blame]47};
48
Krishna Kumar1565c7c2010-08-04 06:15:59 +0000[diff] [blame]49/*
50 * Maximum times a macvtap device can be opened. This can be used to
51 * configure the number of receive queue, e.g. for multiqueue virtio.
52 */
53#define MAX_MACVTAP_QUEUES (NR_CPUS < 16 ? NR_CPUS : 16)
54
Arnd Bergmannfc0663d2010-01-30 12:23:40 +0000[diff] [blame]55struct macvlan_dev {
56 struct net_device *dev;
57 struct list_head list;
58 struct hlist_node hlist;
59 struct macvlan_port *port;
60 struct net_device *lowerdev;
Eric Dumazet8ffab512010-11-10 21:14:04 +0000[diff] [blame]61 struct macvlan_pcpu_stats __percpu *pcpu_stats;
Arnd Bergmannfc0663d2010-01-30 12:23:40 +0000[diff] [blame]62 enum macvlan_mode mode;
63 int (*receive)(struct sk_buff *skb);
64 int (*forward)(struct net_device *dev, struct sk_buff *skb);
Krishna Kumar1565c7c2010-08-04 06:15:59 +0000[diff] [blame]65 struct macvtap_queue *taps[MAX_MACVTAP_QUEUES];
66 int numvtaps;
Arnd Bergmannfc0663d2010-01-30 12:23:40 +0000[diff] [blame]67};
68
69static inline void macvlan_count_rx(const struct macvlan_dev *vlan,
70 unsigned int len, bool success,
71 bool multicast)
72{
Arnd Bergmannfc0663d2010-01-30 12:23:40 +0000[diff] [blame]73 if (likely(success)) {
Eric Dumazet8ffab512010-11-10 21:14:04 +0000[diff] [blame]74 struct macvlan_pcpu_stats *pcpu_stats;
75
76 pcpu_stats = this_cpu_ptr(vlan->pcpu_stats);
77 u64_stats_update_begin(&pcpu_stats->syncp);
78 pcpu_stats->rx_packets++;
79 pcpu_stats->rx_bytes += len;
Arnd Bergmannfc0663d2010-01-30 12:23:40 +0000[diff] [blame]80 if (multicast)
Eric Dumazet8ffab512010-11-10 21:14:04 +0000[diff] [blame]81 pcpu_stats->rx_multicast++;
82 u64_stats_update_end(&pcpu_stats->syncp);
Arnd Bergmannfc0663d2010-01-30 12:23:40 +0000[diff] [blame]83 } else {
Eric Dumazet8ffab512010-11-10 21:14:04 +0000[diff] [blame]84 this_cpu_inc(vlan->pcpu_stats->rx_errors);
Arnd Bergmannfc0663d2010-01-30 12:23:40 +0000[diff] [blame]85 }
86}
87
Herbert Xu8a357472010-07-21 21:44:31 +0000[diff] [blame]88extern void macvlan_common_setup(struct net_device *dev);
89
Arnd Bergmannfc0663d2010-01-30 12:23:40 +0000[diff] [blame]90extern int macvlan_common_newlink(struct net *src_net, struct net_device *dev,
91 struct nlattr *tb[], struct nlattr *data[],
92 int (*receive)(struct sk_buff *skb),
93 int (*forward)(struct net_device *dev,
94 struct sk_buff *skb));
95
96extern void macvlan_count_rx(const struct macvlan_dev *vlan,
97 unsigned int len, bool success,
98 bool multicast);
99
100extern void macvlan_dellink(struct net_device *dev, struct list_head *head);
101
102extern int macvlan_link_register(struct rtnl_link_ops *ops);
103
104extern netdev_tx_t macvlan_start_xmit(struct sk_buff *skb,
105 struct net_device *dev);
106
Patrick McHardyb863ceb2007-07-14 18:55:06 -0700[diff] [blame]107#endif /* _LINUX_IF_MACVLAN_H */