linux/net/netfilter/ipset/ip_set_getport.c

// SPDX-License-Identifier: GPL-2.0-only
/* Copyright (C) 2003-2011 Jozsef Kadlecsik <[email protected]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

/* Get Layer-4 data from the packets */

#include <linux/ip.h>
#include <linux/skbuff.h>
#include <linux/icmp.h>
#include <linux/icmpv6.h>
#include <linux/sctp.h>
#include <linux/netfilter_ipv6/ip6_tables.h>
#include <net/ip.h>
#include <net/ipv6.h>

#include <linux/netfilter/ipset/ip_set_getport.h>
#include <linux/export.h>

/* We must handle non-linear skbs */
static bool
get_port(const struct sk_buff *skb, int protocol, unsigned int protooff,
	 bool src, __be16 *port, u8 *proto)
{ … }

bool
ip_set_get_ip4_port(const struct sk_buff *skb, bool src,
		    __be16 *port, u8 *proto)
{ … }
EXPORT_SYMBOL_GPL(…);

#if IS_ENABLED(CONFIG_IP6_NF_IPTABLES)
bool
ip_set_get_ip6_port(const struct sk_buff *skb, bool src,
		    __be16 *port, u8 *proto)
{ … }
EXPORT_SYMBOL_GPL(…);
#endif