linux/net/ipv6/ip6_input.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *	IPv6 input
 *	Linux INET6 implementation
 *
 *	Authors:
 *	Pedro Roque		<[email protected]>
 *	Ian P. Morris		<[email protected]>
 *
 *	Based in linux/net/ipv4/ip_input.c
 */
/* Changes
 *
 *	Mitsuru KANDA @USAGI and
 *	YOSHIFUJI Hideaki @USAGI: Remove ipv6_parse_exthdrs().
 */

#include <linux/errno.h>
#include <linux/types.h>
#include <linux/socket.h>
#include <linux/sockios.h>
#include <linux/net.h>
#include <linux/netdevice.h>
#include <linux/in6.h>
#include <linux/icmpv6.h>
#include <linux/mroute6.h>
#include <linux/slab.h>
#include <linux/indirect_call_wrapper.h>

#include <linux/netfilter.h>
#include <linux/netfilter_ipv6.h>

#include <net/sock.h>
#include <net/snmp.h>
#include <net/udp.h>

#include <net/ipv6.h>
#include <net/protocol.h>
#include <net/transp_v6.h>
#include <net/rawv6.h>
#include <net/ndisc.h>
#include <net/ip6_route.h>
#include <net/addrconf.h>
#include <net/xfrm.h>
#include <net/inet_ecn.h>
#include <net/dst_metadata.h>

static void ip6_rcv_finish_core(struct net *net, struct sock *sk,
				struct sk_buff *skb)
{ … }

int ip6_rcv_finish(struct net *net, struct sock *sk, struct sk_buff *skb)
{ … }

static void ip6_sublist_rcv_finish(struct list_head *head)
{ … }

static bool ip6_can_use_hint(const struct sk_buff *skb,
			     const struct sk_buff *hint)
{ … }

static struct sk_buff *ip6_extract_route_hint(const struct net *net,
					      struct sk_buff *skb)
{ … }

static void ip6_list_rcv_finish(struct net *net, struct sock *sk,
				struct list_head *head)
{ … }

static struct sk_buff *ip6_rcv_core(struct sk_buff *skb, struct net_device *dev,
				    struct net *net)
{ … }

int ipv6_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, struct net_device *orig_dev)
{ … }

static void ip6_sublist_rcv(struct list_head *head, struct net_device *dev,
			    struct net *net)
{ … }

/* Receive a list of IPv6 packets */
void ipv6_list_rcv(struct list_head *head, struct packet_type *pt,
		   struct net_device *orig_dev)
{ … }

INDIRECT_CALLABLE_DECLARE(…);

/*
 *	Deliver the packet to the host
 */
void ip6_protocol_deliver_rcu(struct net *net, struct sk_buff *skb, int nexthdr,
			      bool have_final)
{ … }

static int ip6_input_finish(struct net *net, struct sock *sk, struct sk_buff *skb)
{ … }


int ip6_input(struct sk_buff *skb)
{ … }
EXPORT_SYMBOL_GPL(…);

int ip6_mc_input(struct sk_buff *skb)
{ … }