1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
#include <linux/if_bridge.h>
#include <linux/netdevice.h>
#include <linux/version.h>
#ifndef HAVE_DEV_DISABLE_LRO
#ifdef NETIF_F_LRO
#include <linux/ethtool.h>
/**
* dev_disable_lro - disable Large Receive Offload on a device
* @dev: device
*
* Disable Large Receive Offload (LRO) on a net device. Must be
* called under RTNL. This is needed if received packets may be
* forwarded to another interface.
*/
void dev_disable_lro(struct net_device *dev)
{
if (dev->ethtool_ops && dev->ethtool_ops->get_flags &&
dev->ethtool_ops->set_flags) {
u32 flags = dev->ethtool_ops->get_flags(dev);
if (flags & ETH_FLAG_LRO) {
flags &= ~ETH_FLAG_LRO;
dev->ethtool_ops->set_flags(dev, flags);
}
}
WARN_ON(dev->features & NETIF_F_LRO);
}
#else
void dev_disable_lro(struct net_device *dev) { }
#endif /* NETIF_F_LRO */
#endif /* HAVE_DEV_DISABLE_LRO */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36) || \
defined HAVE_RHEL_OVS_HOOK
static int nr_bridges;
#ifdef HAVE_RHEL_OVS_HOOK
int netdev_rx_handler_register(struct net_device *dev,
openvswitch_handle_frame_hook_t *hook,
void *rx_handler_data)
{
nr_bridges++;
rcu_assign_pointer(dev->ax25_ptr, rx_handler_data);
if (nr_bridges == 1)
rcu_assign_pointer(openvswitch_handle_frame_hook, hook);
return 0;
}
#else
int netdev_rx_handler_register(struct net_device *dev,
struct sk_buff *(*hook)(struct net_bridge_port *p,
struct sk_buff *skb),
void *rx_handler_data)
{
nr_bridges++;
if (dev->br_port)
return -EBUSY;
rcu_assign_pointer(dev->br_port, rx_handler_data);
if (nr_bridges == 1)
br_handle_frame_hook = hook;
return 0;
}
#endif
void netdev_rx_handler_unregister(struct net_device *dev)
{
nr_bridges--;
#ifdef HAVE_RHEL_OVS_HOOK
rcu_assign_pointer(dev->ax25_ptr, NULL);
if (nr_bridges)
return;
rcu_assign_pointer(openvswitch_handle_frame_hook, NULL);
#else
rcu_assign_pointer(dev->br_port, NULL);
if (nr_bridges)
return;
br_handle_frame_hook = NULL;
#endif
}
#endif
|
