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6264f58c JK |
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; | |
370ca718 | 12 | struct cpumask; |
6264f58c JK |
13 | |
14 | /* Random bits of netdevice that don't need to be exposed */ | |
15 | #define FLOW_LIMIT_HISTORY (1 << 7) /* must be ^2 and !overflow buckets */ | |
16 | struct sd_flow_limit { | |
17 | u64 count; | |
18 | unsigned int num_buckets; | |
19 | unsigned int history_head; | |
20 | u16 history[FLOW_LIMIT_HISTORY]; | |
21 | u8 buckets[]; | |
22 | }; | |
23 | ||
24 | extern int netdev_flow_limit_table_len; | |
25 | ||
26 | #ifdef CONFIG_PROC_FS | |
27 | int __init dev_proc_init(void); | |
28 | #else | |
29 | #define dev_proc_init() 0 | |
30 | #endif | |
31 | ||
32 | void linkwatch_init_dev(struct net_device *dev); | |
33 | void linkwatch_forget_dev(struct net_device *dev); | |
34 | void linkwatch_run_queue(void); | |
35 | ||
36 | void dev_addr_flush(struct net_device *dev); | |
37 | int dev_addr_init(struct net_device *dev); | |
38 | void dev_addr_check(struct net_device *dev); | |
39 | ||
40 | /* sysctls not referred to from outside net/core/ */ | |
41 | extern int netdev_budget; | |
42 | extern unsigned int netdev_budget_usecs; | |
39564c3f | 43 | extern unsigned int sysctl_skb_defer_max; |
6264f58c JK |
44 | extern int netdev_tstamp_prequeue; |
45 | extern int netdev_unregister_timeout_secs; | |
46 | extern int weight_p; | |
47 | extern int dev_weight_rx_bias; | |
48 | extern int dev_weight_tx_bias; | |
49 | ||
50 | /* rtnl helpers */ | |
51 | extern struct list_head net_todo_list; | |
52 | void netdev_run_todo(void); | |
53 | ||
54 | /* netdev management, shared between various uAPI entry points */ | |
55 | struct netdev_name_node { | |
56 | struct hlist_node hlist; | |
57 | struct list_head list; | |
58 | struct net_device *dev; | |
59 | const char *name; | |
60 | }; | |
61 | ||
62 | int netdev_get_name(struct net *net, char *name, int ifindex); | |
63 | int dev_change_name(struct net_device *dev, const char *newname); | |
64 | ||
7663d522 JK |
65 | #define netdev_for_each_altname(dev, namenode) \ |
66 | list_for_each_entry((namenode), &(dev)->name_node->list, list) | |
67 | ||
6264f58c JK |
68 | int netdev_name_node_alt_create(struct net_device *dev, const char *name); |
69 | int netdev_name_node_alt_destroy(struct net_device *dev, const char *name); | |
70 | ||
71 | int dev_validate_mtu(struct net_device *dev, int mtu, | |
72 | struct netlink_ext_ack *extack); | |
73 | int dev_set_mtu_ext(struct net_device *dev, int mtu, | |
74 | struct netlink_ext_ack *extack); | |
75 | ||
76 | int dev_get_phys_port_id(struct net_device *dev, | |
77 | struct netdev_phys_item_id *ppid); | |
78 | int dev_get_phys_port_name(struct net_device *dev, | |
79 | char *name, size_t len); | |
80 | ||
81 | int dev_change_proto_down(struct net_device *dev, bool proto_down); | |
82 | void dev_change_proto_down_reason(struct net_device *dev, unsigned long mask, | |
83 | u32 value); | |
84 | ||
85 | typedef int (*bpf_op_t)(struct net_device *dev, struct netdev_bpf *bpf); | |
86 | int dev_change_xdp_fd(struct net_device *dev, struct netlink_ext_ack *extack, | |
87 | int fd, int expected_fd, u32 flags); | |
88 | ||
89 | int dev_change_tx_queue_len(struct net_device *dev, unsigned long new_len); | |
90 | void dev_set_group(struct net_device *dev, int new_group); | |
91 | int dev_change_carrier(struct net_device *dev, bool new_carrier); | |
92 | ||
93 | void __dev_set_rx_mode(struct net_device *dev); | |
94 | ||
1d997f10 HL |
95 | void __dev_notify_flags(struct net_device *dev, unsigned int old_flags, |
96 | unsigned int gchanges, u32 portid, | |
97 | const struct nlmsghdr *nlh); | |
98 | ||
77f4aa9a HL |
99 | void unregister_netdevice_many_notify(struct list_head *head, |
100 | u32 portid, const struct nlmsghdr *nlh); | |
101 | ||
744d49da JK |
102 | static inline void netif_set_gso_max_size(struct net_device *dev, |
103 | unsigned int size) | |
104 | { | |
105 | /* dev->gso_max_size is read locklessly from sk_setup_caps() */ | |
106 | WRITE_ONCE(dev->gso_max_size, size); | |
9eefedd5 XL |
107 | if (size <= GSO_LEGACY_MAX_SIZE) |
108 | WRITE_ONCE(dev->gso_ipv4_max_size, size); | |
744d49da JK |
109 | } |
110 | ||
111 | static inline void netif_set_gso_max_segs(struct net_device *dev, | |
112 | unsigned int segs) | |
113 | { | |
114 | /* dev->gso_max_segs is read locklessly from sk_setup_caps() */ | |
115 | WRITE_ONCE(dev->gso_max_segs, segs); | |
116 | } | |
117 | ||
118 | static inline void netif_set_gro_max_size(struct net_device *dev, | |
119 | unsigned int size) | |
120 | { | |
121 | /* This pairs with the READ_ONCE() in skb_gro_receive() */ | |
122 | WRITE_ONCE(dev->gro_max_size, size); | |
9eefedd5 XL |
123 | if (size <= GRO_LEGACY_MAX_SIZE) |
124 | WRITE_ONCE(dev->gro_ipv4_max_size, size); | |
125 | } | |
126 | ||
127 | static inline void netif_set_gso_ipv4_max_size(struct net_device *dev, | |
128 | unsigned int size) | |
129 | { | |
130 | /* dev->gso_ipv4_max_size is read locklessly from sk_setup_caps() */ | |
131 | WRITE_ONCE(dev->gso_ipv4_max_size, size); | |
132 | } | |
133 | ||
134 | static inline void netif_set_gro_ipv4_max_size(struct net_device *dev, | |
135 | unsigned int size) | |
136 | { | |
137 | /* This pairs with the READ_ONCE() in skb_gro_receive() */ | |
138 | WRITE_ONCE(dev->gro_ipv4_max_size, size); | |
744d49da JK |
139 | } |
140 | ||
370ca718 | 141 | int rps_cpumask_housekeeping(struct cpumask *mask); |
6264f58c | 142 | #endif |