[linux-2.6-block.git] / net / ipv6 / xfrm6_state.c

// SPDX-License-Identifier: GPL-2.0
/*
 * xfrm6_state.c: based on xfrm4_state.c
 *
 * Authors:
 *	Mitsuru KANDA @USAGI
 *	Kazunori MIYAZAWA @USAGI
 *	Kunihiro Ishiguro <kunihiro@ipinfusion.com>
 *		IPv6 support
 *	YOSHIFUJI Hideaki @USAGI
 *		Split up af-specific portion
 *
 */

#include <net/xfrm.h>
#include <linux/pfkeyv2.h>
#include <linux/ipsec.h>
#include <linux/netfilter_ipv6.h>
#include <linux/export.h>
#include <net/dsfield.h>
#include <net/ipv6.h>
#include <net/addrconf.h>

int xfrm6_extract_header(struct sk_buff *skb)
{
	struct ipv6hdr *iph = ipv6_hdr(skb);

	XFRM_MODE_SKB_CB(skb)->ihl = sizeof(*iph);
	XFRM_MODE_SKB_CB(skb)->id = 0;
	XFRM_MODE_SKB_CB(skb)->frag_off = htons(IP_DF);
	XFRM_MODE_SKB_CB(skb)->tos = ipv6_get_dsfield(iph);
	XFRM_MODE_SKB_CB(skb)->ttl = iph->hop_limit;
	XFRM_MODE_SKB_CB(skb)->optlen = 0;
	memcpy(XFRM_MODE_SKB_CB(skb)->flow_lbl, iph->flow_lbl,
	       sizeof(XFRM_MODE_SKB_CB(skb)->flow_lbl));

	return 0;
}

static struct xfrm_state_afinfo xfrm6_state_afinfo = {
	.family			= AF_INET6,
	.proto			= IPPROTO_IPV6,
	.output			= xfrm6_output,
	.output_finish		= xfrm6_output_finish,
	.extract_input		= xfrm6_extract_input,
	.extract_output		= xfrm6_extract_output,
	.transport_finish	= xfrm6_transport_finish,
	.local_error		= xfrm6_local_error,
};

int __init xfrm6_state_init(void)
{
	return xfrm_state_register_afinfo(&xfrm6_state_afinfo);
}

void xfrm6_state_fini(void)
{
	xfrm_state_unregister_afinfo(&xfrm6_state_afinfo);
}
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
1da177e4 LT	2	/*
	3	* xfrm6_state.c: based on xfrm4_state.c
	4	*
	5	* Authors:
	6	* Mitsuru KANDA @USAGI
67ba4152 IM	7	* Kazunori MIYAZAWA @USAGI
	8	* Kunihiro Ishiguro <kunihiro@ipinfusion.com>
	9	* IPv6 support
	10	* YOSHIFUJI Hideaki @USAGI
	11	* Split up af-specific portion
1ab1457c	12	*
1da177e4 LT	13	*/
	14
	15	#include <net/xfrm.h>
	16	#include <linux/pfkeyv2.h>
	17	#include <linux/ipsec.h>
862b82c6	18	#include <linux/netfilter_ipv6.h>
bc3b2d7f	19	#include <linux/export.h>
36cf9acf	20	#include <net/dsfield.h>
1da177e4	21	#include <net/ipv6.h>
ee51b1b6	22	#include <net/addrconf.h>
1da177e4	23
36cf9acf HX	24	int xfrm6_extract_header(struct sk_buff *skb)
	25	{
	26	struct ipv6hdr *iph = ipv6_hdr(skb);
	27
732c8bd5	28	XFRM_MODE_SKB_CB(skb)->ihl = sizeof(*iph);
36cf9acf HX	29	XFRM_MODE_SKB_CB(skb)->id = 0;
	30	XFRM_MODE_SKB_CB(skb)->frag_off = htons(IP_DF);
	31	XFRM_MODE_SKB_CB(skb)->tos = ipv6_get_dsfield(iph);
	32	XFRM_MODE_SKB_CB(skb)->ttl = iph->hop_limit;
732c8bd5	33	XFRM_MODE_SKB_CB(skb)->optlen = 0;
36cf9acf HX	34	memcpy(XFRM_MODE_SKB_CB(skb)->flow_lbl, iph->flow_lbl,
	35	sizeof(XFRM_MODE_SKB_CB(skb)->flow_lbl));
	36
	37	return 0;
	38	}
	39
1da177e4 LT	40	static struct xfrm_state_afinfo xfrm6_state_afinfo = {
1da177e4 LT	41	.family = AF_INET6,
36cf9acf	42	.proto = IPPROTO_IPV6,
cdca7265	43	.output = xfrm6_output,
43a4dea4	44	.output_finish = xfrm6_output_finish,
227620e2	45	.extract_input = xfrm6_extract_input,
36cf9acf	46	.extract_output = xfrm6_extract_output,
716062fd	47	.transport_finish = xfrm6_transport_finish,
628e341f	48	.local_error = xfrm6_local_error,
1da177e4 LT	49	};
1da177e4 LT	50
0013caba	51	int __init xfrm6_state_init(void)
1da177e4	52	{
0013caba	53	return xfrm_state_register_afinfo(&xfrm6_state_afinfo);
1da177e4 LT	54	}
	55
	56	void xfrm6_state_fini(void)
	57	{
	58	xfrm_state_unregister_afinfo(&xfrm6_state_afinfo);
	59	}