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