1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | #ifndef _NET_CORE_DEV_H |
3 | #define _NET_CORE_DEV_H |
4 | |
5 | #include <linux/types.h> |
6 | |
7 | struct net; |
8 | struct net_device; |
9 | struct netdev_bpf; |
10 | struct netdev_phys_item_id; |
11 | struct netlink_ext_ack; |
12 | |
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 { |
16 | u64 count; |
17 | unsigned int num_buckets; |
18 | unsigned int history_head; |
19 | u16 history[FLOW_LIMIT_HISTORY]; |
20 | u8 buckets[]; |
21 | }; |
22 | |
23 | extern int netdev_flow_limit_table_len; |
24 | |
25 | #ifdef CONFIG_PROC_FS |
26 | int __init dev_proc_init(void); |
27 | #else |
28 | #define dev_proc_init() 0 |
29 | #endif |
30 | |
31 | void linkwatch_init_dev(struct net_device *dev); |
32 | void linkwatch_forget_dev(struct net_device *dev); |
33 | void linkwatch_run_queue(void); |
34 | |
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); |
38 | |
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; |
45 | extern int weight_p; |
46 | extern int dev_weight_rx_bias; |
47 | extern int dev_weight_tx_bias; |
48 | |
49 | /* rtnl helpers */ |
50 | extern struct list_head net_todo_list; |
51 | void netdev_run_todo(void); |
52 | |
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; |
58 | const char *name; |
59 | }; |
60 | |
61 | int netdev_get_name(struct net *net, char *name, int ifindex); |
62 | int dev_change_name(struct net_device *dev, const char *newname); |
63 | |
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); |
66 | |
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); |
71 | |
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); |
76 | |
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, |
79 | u32 value); |
80 | |
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); |
84 | |
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); |
88 | |
89 | void __dev_set_rx_mode(struct net_device *dev); |
90 | |
91 | static inline void netif_set_gso_max_size(struct net_device *dev, |
92 | unsigned int size) |
93 | { |
94 | /* dev->gso_max_size is read locklessly from sk_setup_caps() */ |
95 | WRITE_ONCE(dev->gso_max_size, size); |
96 | } |
97 | |
98 | static inline void netif_set_gso_max_segs(struct net_device *dev, |
99 | unsigned int segs) |
100 | { |
101 | /* dev->gso_max_segs is read locklessly from sk_setup_caps() */ |
102 | WRITE_ONCE(dev->gso_max_segs, segs); |
103 | } |
104 | |
105 | static inline void netif_set_gro_max_size(struct net_device *dev, |
106 | unsigned int size) |
107 | { |
108 | /* This pairs with the READ_ONCE() in skb_gro_receive() */ |
109 | WRITE_ONCE(dev->gro_max_size, size); |
110 | } |
111 | |
112 | #endif |
113 | |