mirror of
https://github.com/openvswitch/ovs
synced 2025-10-27 15:18:06 +00:00
95986f397d
Move compat code to netdev_rx_handler_register() definition. It also adds type safety for netdev-hook. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Acked-by: Jesse Gross <jesse@nicira.com>
92 lines
2.0 KiB
C
92 lines
2.0 KiB
C
#include <linux/if_bridge.h>
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#include <linux/netdevice.h>
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#include <linux/version.h>
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#ifndef HAVE_DEV_DISABLE_LRO
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#ifdef NETIF_F_LRO
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#include <linux/ethtool.h>
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/**
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* dev_disable_lro - disable Large Receive Offload on a device
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* @dev: device
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*
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* Disable Large Receive Offload (LRO) on a net device. Must be
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* called under RTNL. This is needed if received packets may be
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* forwarded to another interface.
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*/
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void dev_disable_lro(struct net_device *dev)
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{
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if (dev->ethtool_ops && dev->ethtool_ops->get_flags &&
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dev->ethtool_ops->set_flags) {
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u32 flags = dev->ethtool_ops->get_flags(dev);
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if (flags & ETH_FLAG_LRO) {
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flags &= ~ETH_FLAG_LRO;
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dev->ethtool_ops->set_flags(dev, flags);
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}
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}
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WARN_ON(dev->features & NETIF_F_LRO);
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}
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#else
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void dev_disable_lro(struct net_device *dev) { }
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#endif /* NETIF_F_LRO */
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#endif /* HAVE_DEV_DISABLE_LRO */
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36) || \
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defined HAVE_RHEL_OVS_HOOK
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static int nr_bridges;
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#ifdef HAVE_RHEL_OVS_HOOK
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int netdev_rx_handler_register(struct net_device *dev,
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openvswitch_handle_frame_hook_t *hook,
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void *rx_handler_data)
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{
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nr_bridges++;
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rcu_assign_pointer(dev->ax25_ptr, rx_handler_data);
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if (nr_bridges == 1)
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rcu_assign_pointer(openvswitch_handle_frame_hook, hook);
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return 0;
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}
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#else
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int netdev_rx_handler_register(struct net_device *dev,
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struct sk_buff *(*hook)(struct net_bridge_port *p,
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struct sk_buff *skb),
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void *rx_handler_data)
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{
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nr_bridges++;
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if (dev->br_port)
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return -EBUSY;
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rcu_assign_pointer(dev->br_port, rx_handler_data);
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if (nr_bridges == 1)
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br_handle_frame_hook = hook;
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return 0;
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}
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#endif
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void netdev_rx_handler_unregister(struct net_device *dev)
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{
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nr_bridges--;
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#ifdef HAVE_RHEL_OVS_HOOK
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rcu_assign_pointer(dev->ax25_ptr, NULL);
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if (nr_bridges)
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return;
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rcu_assign_pointer(openvswitch_handle_frame_hook, NULL);
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#else
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rcu_assign_pointer(dev->br_port, NULL);
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if (nr_bridges)
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return;
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br_handle_frame_hook = NULL;
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#endif
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}
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#endif
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