1/* SPDX-License-Identifier: GPL-2.0-or-later */
2#ifndef _NET_HOTDATA_H
3#define _NET_HOTDATA_H
4
5#include <linux/llist.h>
6#include <linux/types.h>
7#include <linux/netdevice.h>
8#include <net/protocol.h>
9
10struct skb_defer_node {
11 struct llist_head defer_list;
12 atomic_long_t defer_count;
13} ____cacheline_aligned_in_smp;
14
15/* Read mostly data used in network fast paths. */
16struct net_hotdata {
17#if IS_ENABLED(CONFIG_INET)
18 struct packet_offload ip_packet_offload;
19 struct net_offload tcpv4_offload;
20 struct net_protocol tcp_protocol;
21 struct net_offload udpv4_offload;
22 struct net_protocol udp_protocol;
23 struct packet_offload ipv6_packet_offload;
24 struct net_offload tcpv6_offload;
25#if IS_ENABLED(CONFIG_IPV6)
26 struct inet6_protocol tcpv6_protocol;
27 struct inet6_protocol udpv6_protocol;
28#endif
29 struct net_offload udpv6_offload;
30#endif
31 struct list_head offload_base;
32 struct kmem_cache *skbuff_cache;
33 struct kmem_cache *skbuff_fclone_cache;
34 struct kmem_cache *skb_small_head_cache;
35#ifdef CONFIG_RPS
36 struct rps_sock_flow_table __rcu *rps_sock_flow_table;
37 u32 rps_cpu_mask;
38#endif
39 struct skb_defer_node __percpu *skb_defer_nodes;
40 int gro_normal_batch;
41 int netdev_budget;
42 int netdev_budget_usecs;
43 int tstamp_prequeue;
44 int max_backlog;
45 int qdisc_max_burst;
46 int dev_tx_weight;
47 int dev_rx_weight;
48 int sysctl_max_skb_frags;
49 int sysctl_skb_defer_max;
50 int sysctl_mem_pcpu_rsv;
51};
52
53#define inet_ehash_secret net_hotdata.tcp_protocol.secret
54#define udp_ehash_secret net_hotdata.udp_protocol.secret
55#define inet6_ehash_secret net_hotdata.tcpv6_protocol.secret
56#define tcp_ipv6_hash_secret net_hotdata.tcpv6_offload.secret
57#define udp6_ehash_secret net_hotdata.udpv6_protocol.secret
58#define udp_ipv6_hash_secret net_hotdata.udpv6_offload.secret
59
60extern struct net_hotdata net_hotdata;
61
62#endif /* _NET_HOTDATA_H */
63

source code of linux/include/net/hotdata.h