LXR linux/net/netfilter/nf_flow_table

   1// SPDX-License-Identifier: GPL-2.0-only
   2#include <linux/kernel.h>
   3#include <linux/init.h>
   4#include <linux/module.h>
   5#include <linux/netfilter.h>
   6#include <linux/rhashtable.h>
   7#include <net/netfilter/nf_flow_table.h>
   8#include <net/netfilter/nf_tables.h>
   9
  10static unsigned int
  11nf_flow_offload_inet_hook(void *priv, struct sk_buff *skb,
  12                          const struct nf_hook_state *state)
  13{
  14        switch (skb->protocol) {
  15        case htons(ETH_P_IP):
  16                return nf_flow_offload_ip_hook(priv, skb, state);
  17        case htons(ETH_P_IPV6):
  18                return nf_flow_offload_ipv6_hook(priv, skb, state);
  19        }
  20
  21        return NF_ACCEPT;
  22}
  23
  24static struct nf_flowtable_type flowtable_inet = {
  25        .family         = NFPROTO_INET,
  26        .init           = nf_flow_table_init,
  27        .free           = nf_flow_table_free,
  28        .hook           = nf_flow_offload_inet_hook,
  29        .owner          = THIS_MODULE,
  30};
  31
  32static int __init nf_flow_inet_module_init(void)
  33{
  34        nft_register_flowtable_type(&flowtable_inet);
  35
  36        return 0;
  37}
  38
  39static void __exit nf_flow_inet_module_exit(void)
  40{
  41        nft_unregister_flowtable_type(&flowtable_inet);
  42}
  43
  44module_init(nf_flow_inet_module_init);
  45module_exit(nf_flow_inet_module_exit);
  46
  47MODULE_LICENSE("GPL");
  48MODULE_AUTHOR("Pablo Neira Ayuso <pablo@netfilter.org>");
  49MODULE_ALIAS_NF_FLOWTABLE(1); /* NFPROTO_INET */
  50