include/net/hotdata.h

   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 */