/*
 * xfrm4_state.c
 *
 * Changes:
 * 	YOSHIFUJI Hideaki @USAGI
 * 		Split up af-specific portion
 *
 */

#include <net/ip.h>
#include <net/xfrm.h>
#include <linux/pfkeyv2.h>
#include <linux/ipsec.h>
#include <linux/netfilter_ipv4.h>
#include <linux/export.h>

static int xfrm4_init_flags(struct xfrm_state *x)
{
	if (xs_net(x)->ipv4.sysctl_ip_no_pmtu_disc)
		x->props.flags |= XFRM_STATE_NOPMTUDISC;
	return 0;
}

static void
__xfrm4_init_tempsel(struct xfrm_selector *sel, const struct flowi *fl)
{
	const struct flowi4 *fl4 = &fl->u.ip4;

	sel->daddr.a4 = fl4->daddr;
	sel->saddr.a4 = fl4->saddr;
	sel->dport = xfrm_flowi_dport(fl, &fl4->uli);
	sel->dport_mask = htons(0xffff);
	sel->sport = xfrm_flowi_sport(fl, &fl4->uli);
	sel->sport_mask = htons(0xffff);
	sel->family = AF_INET;
	sel->prefixlen_d = 32;
	sel->prefixlen_s = 32;
	sel->proto = fl4->flowi4_proto;
	sel->ifindex = fl4->flowi4_oif;
}

static void
xfrm4_init_temprop(struct xfrm_state *x, const struct xfrm_tmpl *tmpl,
		   const xfrm_address_t *daddr, const xfrm_address_t *saddr)
{
	x->id = tmpl->id;
	if (x->id.daddr.a4 == 0)
		x->id.daddr.a4 = daddr->a4;
	x->props.saddr = tmpl->saddr;
	if (x->props.saddr.a4 == 0)
		x->props.saddr.a4 = saddr->a4;
	x->props.mode = tmpl->mode;
	x->props.reqid = tmpl->reqid;
	x->props.family = AF_INET;
}

int xfrm4_extract_header(struct sk_buff *skb)
{
	const struct iphdr *iph = ip_hdr(skb);

	XFRM_MODE_SKB_CB(skb)->ihl = sizeof(*iph);
	XFRM_MODE_SKB_CB(skb)->id = iph->id;
	XFRM_MODE_SKB_CB(skb)->frag_off = iph->frag_off;
	XFRM_MODE_SKB_CB(skb)->tos = iph->tos;
	XFRM_MODE_SKB_CB(skb)->ttl = iph->ttl;
	XFRM_MODE_SKB_CB(skb)->optlen = iph->ihl * 4 - sizeof(*iph);
	memset(XFRM_MODE_SKB_CB(skb)->flow_lbl, 0,
	       sizeof(XFRM_MODE_SKB_CB(skb)->flow_lbl));

	return 0;
}

static struct xfrm_state_afinfo xfrm4_state_afinfo = {
	.family			= AF_INET,
	.proto			= IPPROTO_IPIP,
	.eth_proto		= htons(ETH_P_IP),
	.owner			= THIS_MODULE,
	.init_flags		= xfrm4_init_flags,
	.init_tempsel		= __xfrm4_init_tempsel,
	.init_temprop		= xfrm4_init_temprop,
	.output			= xfrm4_output,
	.output_finish		= xfrm4_output_finish,
	.extract_input		= xfrm4_extract_input,
	.extract_output		= xfrm4_extract_output,
	.transport_finish	= xfrm4_transport_finish,
	.local_error		= xfrm4_local_error,
};

void __init xfrm4_state_init(void)
{
	xfrm_state_register_afinfo(&xfrm4_state_afinfo);
}

#if 0
void __exit xfrm4_state_fini(void)
{
	xfrm_state_unregister_afinfo(&xfrm4_state_afinfo);
}
#endif  /*  0  */

a href='/cgit.cgi/linux/net-next.git/diff/?id=201dacbb1d77e3227aa61b7b9fd375ae201e86b2'>root</a>/<a href='/cgit.cgi/linux/net-next.git/diff/net?id=201dacbb1d77e3227aa61b7b9fd375ae201e86b2'>net</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='201dacbb1d77e3227aa61b7b9fd375ae201e86b2'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=201dacbb1d77e3227aa61b7b9fd375ae201e86b2'>Diffstat</a> (limited to 'net')</div><table summary='diffstat' class='diffstat'><tr><td class='mode'>-rw-r--r--</td><td class='upd'><a href='/cgit.cgi/linux/net-next.git/diff/net/core/dev.c?id=201dacbb1d77e3227aa61b7b9fd375ae201e86b2'>net/core/dev.c</a></td><td class='right'>259</td><td class='graph'><table summary='file diffstat' width='100%'><tr><td class='add' style='width: 52.9%;'/><td class='rem' style='width: 47.1%;'/><td class='none' style='width: 0.0%;'/></tr></table></td></tr>
</table><div class='diffstat-summary'>1 files changed, 137 insertions, 122 deletions</div><table summary='diff' class='diff'><tr><td><div class='head'>diff --git a/net/core/dev.c b/net/core/dev.c