5 * YOSHIFUJI Hideaki @USAGI
6 * Split up af-specific portion
12 #include <linux/pfkeyv2.h>
13 #include <linux/ipsec.h>
14 #include <linux/netfilter_ipv4.h>
16 static int xfrm4_init_flags(struct xfrm_state
*x
)
18 if (ipv4_config
.no_pmtu_disc
)
19 x
->props
.flags
|= XFRM_STATE_NOPMTUDISC
;
24 __xfrm4_init_tempsel(struct xfrm_selector
*sel
, struct flowi
*fl
)
26 sel
->daddr
.a4
= fl
->fl4_dst
;
27 sel
->saddr
.a4
= fl
->fl4_src
;
28 sel
->dport
= xfrm_flowi_dport(fl
);
29 sel
->dport_mask
= htons(0xffff);
30 sel
->sport
= xfrm_flowi_sport(fl
);
31 sel
->sport_mask
= htons(0xffff);
32 sel
->family
= AF_INET
;
33 sel
->prefixlen_d
= 32;
34 sel
->prefixlen_s
= 32;
35 sel
->proto
= fl
->proto
;
36 sel
->ifindex
= fl
->oif
;
40 xfrm4_init_temprop(struct xfrm_state
*x
, struct xfrm_tmpl
*tmpl
,
41 xfrm_address_t
*daddr
, xfrm_address_t
*saddr
)
44 if (x
->id
.daddr
.a4
== 0)
45 x
->id
.daddr
.a4
= daddr
->a4
;
46 x
->props
.saddr
= tmpl
->saddr
;
47 if (x
->props
.saddr
.a4
== 0)
48 x
->props
.saddr
.a4
= saddr
->a4
;
49 x
->props
.mode
= tmpl
->mode
;
50 x
->props
.reqid
= tmpl
->reqid
;
51 x
->props
.family
= AF_INET
;
54 int xfrm4_extract_header(struct sk_buff
*skb
)
56 struct iphdr
*iph
= ip_hdr(skb
);
58 XFRM_MODE_SKB_CB(skb
)->ihl
= sizeof(*iph
);
59 XFRM_MODE_SKB_CB(skb
)->id
= iph
->id
;
60 XFRM_MODE_SKB_CB(skb
)->frag_off
= iph
->frag_off
;
61 XFRM_MODE_SKB_CB(skb
)->tos
= iph
->tos
;
62 XFRM_MODE_SKB_CB(skb
)->ttl
= iph
->ttl
;
63 XFRM_MODE_SKB_CB(skb
)->optlen
= iph
->ihl
* 4 - sizeof(*iph
);
64 memset(XFRM_MODE_SKB_CB(skb
)->flow_lbl
, 0,
65 sizeof(XFRM_MODE_SKB_CB(skb
)->flow_lbl
));
70 static struct xfrm_state_afinfo xfrm4_state_afinfo
= {
72 .proto
= IPPROTO_IPIP
,
73 .eth_proto
= htons(ETH_P_IP
),
75 .init_flags
= xfrm4_init_flags
,
76 .init_tempsel
= __xfrm4_init_tempsel
,
77 .init_temprop
= xfrm4_init_temprop
,
78 .output
= xfrm4_output
,
79 .extract_input
= xfrm4_extract_input
,
80 .extract_output
= xfrm4_extract_output
,
81 .transport_finish
= xfrm4_transport_finish
,
84 void __init
xfrm4_state_init(void)
86 xfrm_state_register_afinfo(&xfrm4_state_afinfo
);
90 void __exit
xfrm4_state_fini(void)
92 xfrm_state_unregister_afinfo(&xfrm4_state_afinfo
);