2022-04-06 21:37:54 +00:00
|
|
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
|
|
#ifndef _NET_CORE_DEV_H
|
|
|
|
#define _NET_CORE_DEV_H
|
|
|
|
|
|
|
|
#include <linux/types.h>
|
2024-02-13 06:32:38 +00:00
|
|
|
#include <linux/rwsem.h>
|
2024-03-29 15:42:18 +00:00
|
|
|
#include <linux/netdevice.h>
|
2022-04-06 21:37:54 +00:00
|
|
|
|
|
|
|
struct net;
|
|
|
|
struct netlink_ext_ack;
|
2023-02-07 18:44:56 +00:00
|
|
|
struct cpumask;
|
2022-04-06 21:37:54 +00:00
|
|
|
|
|
|
|
/* Random bits of netdevice that don't need to be exposed */
|
|
|
|
#define FLOW_LIMIT_HISTORY (1 << 7) /* must be ^2 and !overflow buckets */
|
|
|
|
struct sd_flow_limit {
|
|
|
|
u64 count;
|
|
|
|
unsigned int num_buckets;
|
|
|
|
unsigned int history_head;
|
|
|
|
u16 history[FLOW_LIMIT_HISTORY];
|
|
|
|
u8 buckets[];
|
|
|
|
};
|
|
|
|
|
|
|
|
extern int netdev_flow_limit_table_len;
|
|
|
|
|
|
|
|
#ifdef CONFIG_PROC_FS
|
|
|
|
int __init dev_proc_init(void);
|
|
|
|
#else
|
|
|
|
#define dev_proc_init() 0
|
|
|
|
#endif
|
|
|
|
|
|
|
|
void linkwatch_init_dev(struct net_device *dev);
|
|
|
|
void linkwatch_run_queue(void);
|
|
|
|
|
|
|
|
void dev_addr_flush(struct net_device *dev);
|
|
|
|
int dev_addr_init(struct net_device *dev);
|
|
|
|
void dev_addr_check(struct net_device *dev);
|
|
|
|
|
|
|
|
/* sysctls not referred to from outside net/core/ */
|
|
|
|
extern int netdev_unregister_timeout_secs;
|
|
|
|
extern int weight_p;
|
|
|
|
extern int dev_weight_rx_bias;
|
|
|
|
extern int dev_weight_tx_bias;
|
|
|
|
|
2024-02-13 06:32:38 +00:00
|
|
|
extern struct rw_semaphore dev_addr_sem;
|
|
|
|
|
2022-04-06 21:37:54 +00:00
|
|
|
/* rtnl helpers */
|
|
|
|
extern struct list_head net_todo_list;
|
|
|
|
void netdev_run_todo(void);
|
|
|
|
|
|
|
|
/* netdev management, shared between various uAPI entry points */
|
|
|
|
struct netdev_name_node {
|
|
|
|
struct hlist_node hlist;
|
|
|
|
struct list_head list;
|
|
|
|
struct net_device *dev;
|
|
|
|
const char *name;
|
2024-01-26 20:14:49 +00:00
|
|
|
struct rcu_head rcu;
|
2022-04-06 21:37:54 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
int netdev_get_name(struct net *net, char *name, int ifindex);
|
|
|
|
int dev_change_name(struct net_device *dev, const char *newname);
|
|
|
|
|
2023-10-18 01:38:14 +00:00
|
|
|
#define netdev_for_each_altname(dev, namenode) \
|
|
|
|
list_for_each_entry((namenode), &(dev)->name_node->list, list)
|
2024-01-19 00:58:59 +00:00
|
|
|
#define netdev_for_each_altname_safe(dev, namenode, next) \
|
|
|
|
list_for_each_entry_safe((namenode), (next), &(dev)->name_node->list, \
|
|
|
|
list)
|
2023-10-18 01:38:14 +00:00
|
|
|
|
2022-04-06 21:37:54 +00:00
|
|
|
int netdev_name_node_alt_create(struct net_device *dev, const char *name);
|
|
|
|
int netdev_name_node_alt_destroy(struct net_device *dev, const char *name);
|
|
|
|
|
|
|
|
int dev_validate_mtu(struct net_device *dev, int mtu,
|
|
|
|
struct netlink_ext_ack *extack);
|
|
|
|
int dev_set_mtu_ext(struct net_device *dev, int mtu,
|
|
|
|
struct netlink_ext_ack *extack);
|
|
|
|
|
|
|
|
int dev_get_phys_port_id(struct net_device *dev,
|
|
|
|
struct netdev_phys_item_id *ppid);
|
|
|
|
int dev_get_phys_port_name(struct net_device *dev,
|
|
|
|
char *name, size_t len);
|
|
|
|
|
|
|
|
int dev_change_proto_down(struct net_device *dev, bool proto_down);
|
|
|
|
void dev_change_proto_down_reason(struct net_device *dev, unsigned long mask,
|
|
|
|
u32 value);
|
|
|
|
|
|
|
|
typedef int (*bpf_op_t)(struct net_device *dev, struct netdev_bpf *bpf);
|
|
|
|
int dev_change_xdp_fd(struct net_device *dev, struct netlink_ext_ack *extack,
|
|
|
|
int fd, int expected_fd, u32 flags);
|
|
|
|
|
|
|
|
int dev_change_tx_queue_len(struct net_device *dev, unsigned long new_len);
|
|
|
|
void dev_set_group(struct net_device *dev, int new_group);
|
|
|
|
int dev_change_carrier(struct net_device *dev, bool new_carrier);
|
|
|
|
|
|
|
|
void __dev_set_rx_mode(struct net_device *dev);
|
|
|
|
|
2022-10-28 08:42:21 +00:00
|
|
|
void __dev_notify_flags(struct net_device *dev, unsigned int old_flags,
|
|
|
|
unsigned int gchanges, u32 portid,
|
|
|
|
const struct nlmsghdr *nlh);
|
|
|
|
|
2022-10-28 08:42:22 +00:00
|
|
|
void unregister_netdevice_many_notify(struct list_head *head,
|
|
|
|
u32 portid, const struct nlmsghdr *nlh);
|
|
|
|
|
2022-05-06 02:51:34 +00:00
|
|
|
static inline void netif_set_gso_max_size(struct net_device *dev,
|
|
|
|
unsigned int size)
|
|
|
|
{
|
|
|
|
/* dev->gso_max_size is read locklessly from sk_setup_caps() */
|
|
|
|
WRITE_ONCE(dev->gso_max_size, size);
|
2023-01-28 15:58:38 +00:00
|
|
|
if (size <= GSO_LEGACY_MAX_SIZE)
|
|
|
|
WRITE_ONCE(dev->gso_ipv4_max_size, size);
|
2022-05-06 02:51:34 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static inline void netif_set_gso_max_segs(struct net_device *dev,
|
|
|
|
unsigned int segs)
|
|
|
|
{
|
|
|
|
/* dev->gso_max_segs is read locklessly from sk_setup_caps() */
|
|
|
|
WRITE_ONCE(dev->gso_max_segs, segs);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void netif_set_gro_max_size(struct net_device *dev,
|
|
|
|
unsigned int size)
|
|
|
|
{
|
|
|
|
/* This pairs with the READ_ONCE() in skb_gro_receive() */
|
|
|
|
WRITE_ONCE(dev->gro_max_size, size);
|
2023-01-28 15:58:38 +00:00
|
|
|
if (size <= GRO_LEGACY_MAX_SIZE)
|
|
|
|
WRITE_ONCE(dev->gro_ipv4_max_size, size);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void netif_set_gso_ipv4_max_size(struct net_device *dev,
|
|
|
|
unsigned int size)
|
|
|
|
{
|
|
|
|
/* dev->gso_ipv4_max_size is read locklessly from sk_setup_caps() */
|
|
|
|
WRITE_ONCE(dev->gso_ipv4_max_size, size);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void netif_set_gro_ipv4_max_size(struct net_device *dev,
|
|
|
|
unsigned int size)
|
|
|
|
{
|
|
|
|
/* This pairs with the READ_ONCE() in skb_gro_receive() */
|
|
|
|
WRITE_ONCE(dev->gro_ipv4_max_size, size);
|
2022-05-06 02:51:34 +00:00
|
|
|
}
|
|
|
|
|
2023-02-07 18:44:56 +00:00
|
|
|
int rps_cpumask_housekeeping(struct cpumask *mask);
|
2023-10-16 12:57:38 +00:00
|
|
|
|
|
|
|
#if defined(CONFIG_DEBUG_NET) && defined(CONFIG_BPF_SYSCALL)
|
|
|
|
void xdp_do_check_flushed(struct napi_struct *napi);
|
|
|
|
#else
|
|
|
|
static inline void xdp_do_check_flushed(struct napi_struct *napi) { }
|
|
|
|
#endif
|
2023-12-01 23:28:56 +00:00
|
|
|
|
|
|
|
struct napi_struct *napi_by_id(unsigned int napi_id);
|
2024-03-29 15:42:18 +00:00
|
|
|
void kick_defer_list_purge(struct softnet_data *sd, unsigned int cpu);
|
|
|
|
|
2024-03-29 15:42:19 +00:00
|
|
|
#define XMIT_RECURSION_LIMIT 8
|
2024-06-20 13:21:58 +00:00
|
|
|
|
|
|
|
#ifndef CONFIG_PREEMPT_RT
|
2024-03-29 15:42:19 +00:00
|
|
|
static inline bool dev_xmit_recursion(void)
|
|
|
|
{
|
|
|
|
return unlikely(__this_cpu_read(softnet_data.xmit.recursion) >
|
|
|
|
XMIT_RECURSION_LIMIT);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void dev_xmit_recursion_inc(void)
|
|
|
|
{
|
|
|
|
__this_cpu_inc(softnet_data.xmit.recursion);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void dev_xmit_recursion_dec(void)
|
|
|
|
{
|
|
|
|
__this_cpu_dec(softnet_data.xmit.recursion);
|
|
|
|
}
|
2024-06-20 13:21:58 +00:00
|
|
|
#else
|
|
|
|
static inline bool dev_xmit_recursion(void)
|
|
|
|
{
|
|
|
|
return unlikely(current->net_xmit.recursion > XMIT_RECURSION_LIMIT);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void dev_xmit_recursion_inc(void)
|
|
|
|
{
|
|
|
|
current->net_xmit.recursion++;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void dev_xmit_recursion_dec(void)
|
|
|
|
{
|
|
|
|
current->net_xmit.recursion--;
|
|
|
|
}
|
|
|
|
#endif
|
2024-03-29 15:42:19 +00:00
|
|
|
|
2024-06-12 15:04:02 +00:00
|
|
|
int dev_set_hwtstamp_phylib(struct net_device *dev,
|
|
|
|
struct kernel_hwtstamp_config *cfg,
|
|
|
|
struct netlink_ext_ack *extack);
|
|
|
|
|
2022-04-06 21:37:54 +00:00
|
|
|
#endif
|