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4c203b0454
xfrm_prepare_input needs to lookup the state afinfo backend again to fetch the address family ethernet protocol value. There are only two address families, so a switch statement is simpler. While at it, use u8 for family and proto and remove the owner member -- its not used anywhere. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* xfrm6_state.c: based on xfrm4_state.c
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*
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* Authors:
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* Mitsuru KANDA @USAGI
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* Kazunori MIYAZAWA @USAGI
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* Kunihiro Ishiguro <kunihiro@ipinfusion.com>
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* IPv6 support
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* YOSHIFUJI Hideaki @USAGI
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* Split up af-specific portion
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*
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*/
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#include <net/xfrm.h>
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#include <linux/pfkeyv2.h>
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#include <linux/ipsec.h>
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#include <linux/netfilter_ipv6.h>
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#include <linux/export.h>
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#include <net/dsfield.h>
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#include <net/ipv6.h>
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#include <net/addrconf.h>
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int xfrm6_extract_header(struct sk_buff *skb)
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{
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struct ipv6hdr *iph = ipv6_hdr(skb);
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XFRM_MODE_SKB_CB(skb)->ihl = sizeof(*iph);
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XFRM_MODE_SKB_CB(skb)->id = 0;
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XFRM_MODE_SKB_CB(skb)->frag_off = htons(IP_DF);
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XFRM_MODE_SKB_CB(skb)->tos = ipv6_get_dsfield(iph);
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XFRM_MODE_SKB_CB(skb)->ttl = iph->hop_limit;
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XFRM_MODE_SKB_CB(skb)->optlen = 0;
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memcpy(XFRM_MODE_SKB_CB(skb)->flow_lbl, iph->flow_lbl,
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sizeof(XFRM_MODE_SKB_CB(skb)->flow_lbl));
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return 0;
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}
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static struct xfrm_state_afinfo xfrm6_state_afinfo = {
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.family = AF_INET6,
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.proto = IPPROTO_IPV6,
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.output = xfrm6_output,
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.output_finish = xfrm6_output_finish,
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.extract_input = xfrm6_extract_input,
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.extract_output = xfrm6_extract_output,
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.transport_finish = xfrm6_transport_finish,
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.local_error = xfrm6_local_error,
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};
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int __init xfrm6_state_init(void)
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{
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return xfrm_state_register_afinfo(&xfrm6_state_afinfo);
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}
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void xfrm6_state_fini(void)
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{
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xfrm_state_unregister_afinfo(&xfrm6_state_afinfo);
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}
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