1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 #ifndef _NET_CORE_DEV_H
3 #define _NET_CORE_DEV_H
5 #include <linux/types.h>
10 struct netdev_phys_item_id;
11 struct netlink_ext_ack;
13 /* Random bits of netdevice that don't need to be exposed */
14 #define FLOW_LIMIT_HISTORY (1 << 7) /* must be ^2 and !overflow buckets */
15 struct sd_flow_limit {
17 unsigned int num_buckets;
18 unsigned int history_head;
19 u16 history[FLOW_LIMIT_HISTORY];
23 extern int netdev_flow_limit_table_len;
26 int __init dev_proc_init(void);
28 #define dev_proc_init() 0
31 void linkwatch_init_dev(struct net_device *dev);
32 void linkwatch_forget_dev(struct net_device *dev);
33 void linkwatch_run_queue(void);
35 void dev_addr_flush(struct net_device *dev);
36 int dev_addr_init(struct net_device *dev);
37 void dev_addr_check(struct net_device *dev);
39 /* sysctls not referred to from outside net/core/ */
40 extern int netdev_budget;
41 extern unsigned int netdev_budget_usecs;
42 extern unsigned int sysctl_skb_defer_max;
43 extern int netdev_tstamp_prequeue;
44 extern int netdev_unregister_timeout_secs;
46 extern int dev_weight_rx_bias;
47 extern int dev_weight_tx_bias;
50 extern struct list_head net_todo_list;
51 void netdev_run_todo(void);
53 /* netdev management, shared between various uAPI entry points */
54 struct netdev_name_node {
55 struct hlist_node hlist;
56 struct list_head list;
57 struct net_device *dev;
61 int netdev_get_name(struct net *net, char *name, int ifindex);
62 int dev_change_name(struct net_device *dev, const char *newname);
64 int netdev_name_node_alt_create(struct net_device *dev, const char *name);
65 int netdev_name_node_alt_destroy(struct net_device *dev, const char *name);
67 int dev_validate_mtu(struct net_device *dev, int mtu,
68 struct netlink_ext_ack *extack);
69 int dev_set_mtu_ext(struct net_device *dev, int mtu,
70 struct netlink_ext_ack *extack);
72 int dev_get_phys_port_id(struct net_device *dev,
73 struct netdev_phys_item_id *ppid);
74 int dev_get_phys_port_name(struct net_device *dev,
75 char *name, size_t len);
77 int dev_change_proto_down(struct net_device *dev, bool proto_down);
78 void dev_change_proto_down_reason(struct net_device *dev, unsigned long mask,
81 typedef int (*bpf_op_t)(struct net_device *dev, struct netdev_bpf *bpf);
82 int dev_change_xdp_fd(struct net_device *dev, struct netlink_ext_ack *extack,
83 int fd, int expected_fd, u32 flags);
85 int dev_change_tx_queue_len(struct net_device *dev, unsigned long new_len);
86 void dev_set_group(struct net_device *dev, int new_group);
87 int dev_change_carrier(struct net_device *dev, bool new_carrier);
89 void __dev_set_rx_mode(struct net_device *dev);
91 static inline void netif_set_gso_max_size(struct net_device *dev,
94 /* dev->gso_max_size is read locklessly from sk_setup_caps() */
95 WRITE_ONCE(dev->gso_max_size, size);
98 static inline void netif_set_gso_max_segs(struct net_device *dev,
101 /* dev->gso_max_segs is read locklessly from sk_setup_caps() */
102 WRITE_ONCE(dev->gso_max_segs, segs);
105 static inline void netif_set_gro_max_size(struct net_device *dev,
108 /* This pairs with the READ_ONCE() in skb_gro_receive() */
109 WRITE_ONCE(dev->gro_max_size, size);