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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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09cca53c16
As explained in commit 316580b69d ("u64_stats: provide u64_stats_t type")
we should use u64_stats_t and related accessors to avoid load/store tearing.
Add READ_ONCE() when reading rx_errors & tx_dropped.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
111 lines
2.8 KiB
C
111 lines
2.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_IF_MACVLAN_H
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#define _LINUX_IF_MACVLAN_H
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#include <linux/if_link.h>
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#include <linux/if_vlan.h>
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#include <linux/list.h>
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#include <linux/netdevice.h>
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#include <linux/netlink.h>
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#include <net/netlink.h>
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#include <linux/u64_stats_sync.h>
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struct macvlan_port;
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#define MACVLAN_MC_FILTER_BITS 8
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#define MACVLAN_MC_FILTER_SZ (1 << MACVLAN_MC_FILTER_BITS)
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struct macvlan_dev {
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struct net_device *dev;
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struct list_head list;
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struct hlist_node hlist;
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struct macvlan_port *port;
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struct net_device *lowerdev;
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netdevice_tracker dev_tracker;
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void *accel_priv;
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struct vlan_pcpu_stats __percpu *pcpu_stats;
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DECLARE_BITMAP(mc_filter, MACVLAN_MC_FILTER_SZ);
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netdev_features_t set_features;
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enum macvlan_mode mode;
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u16 flags;
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unsigned int macaddr_count;
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u32 bc_queue_len_req;
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#ifdef CONFIG_NET_POLL_CONTROLLER
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struct netpoll *netpoll;
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#endif
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};
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static inline void macvlan_count_rx(const struct macvlan_dev *vlan,
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unsigned int len, bool success,
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bool multicast)
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{
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if (likely(success)) {
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struct vlan_pcpu_stats *pcpu_stats;
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pcpu_stats = get_cpu_ptr(vlan->pcpu_stats);
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u64_stats_update_begin(&pcpu_stats->syncp);
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u64_stats_inc(&pcpu_stats->rx_packets);
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u64_stats_add(&pcpu_stats->rx_bytes, len);
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if (multicast)
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u64_stats_inc(&pcpu_stats->rx_multicast);
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u64_stats_update_end(&pcpu_stats->syncp);
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put_cpu_ptr(vlan->pcpu_stats);
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} else {
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this_cpu_inc(vlan->pcpu_stats->rx_errors);
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}
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}
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extern void macvlan_common_setup(struct net_device *dev);
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extern int macvlan_common_newlink(struct net *src_net, struct net_device *dev,
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struct nlattr *tb[], struct nlattr *data[],
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struct netlink_ext_ack *extack);
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extern void macvlan_dellink(struct net_device *dev, struct list_head *head);
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extern int macvlan_link_register(struct rtnl_link_ops *ops);
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#if IS_ENABLED(CONFIG_MACVLAN)
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static inline struct net_device *
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macvlan_dev_real_dev(const struct net_device *dev)
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{
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struct macvlan_dev *macvlan = netdev_priv(dev);
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return macvlan->lowerdev;
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}
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#else
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static inline struct net_device *
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macvlan_dev_real_dev(const struct net_device *dev)
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{
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BUG();
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return NULL;
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}
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#endif
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static inline void *macvlan_accel_priv(struct net_device *dev)
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{
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struct macvlan_dev *macvlan = netdev_priv(dev);
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return macvlan->accel_priv;
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}
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static inline bool macvlan_supports_dest_filter(struct net_device *dev)
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{
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struct macvlan_dev *macvlan = netdev_priv(dev);
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return macvlan->mode == MACVLAN_MODE_PRIVATE ||
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macvlan->mode == MACVLAN_MODE_VEPA ||
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macvlan->mode == MACVLAN_MODE_BRIDGE;
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}
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static inline int macvlan_release_l2fw_offload(struct net_device *dev)
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{
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struct macvlan_dev *macvlan = netdev_priv(dev);
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macvlan->accel_priv = NULL;
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return dev_uc_add(macvlan->lowerdev, dev->dev_addr);
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}
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#endif /* _LINUX_IF_MACVLAN_H */
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