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xfrm: state: remove extract_input indirection from xfrm_state_afinfo

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In order to keep CONFIG_IPV6=m working, xfrm6_extract_header needs to be
duplicated.  It will be removed again in a followup change when the
remaining caller is moved to net/xfrm as well.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Florian Westphal
2020-05-04 10:06:04 +02:00
committed by Steffen Klassert
parent 6d64be3da2
commit a269fbfc4e
8 changed files with 45 additions and 49 deletions
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18
net/xfrm/xfrm_inout.h
View File

@@ -6,6 +6,24 @@
#ifndef XFRM_INOUT_H
#define XFRM_INOUT_H 1
static inline void xfrm6_extract_header(struct sk_buff *skb)
{
#if IS_ENABLED(CONFIG_IPV6)
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));
#else
WARN_ON_ONCE(1);
#endif
}
static inline void xfrm6_beet_make_header(struct sk_buff *skb)
{
struct ipv6hdr *iph = ipv6_hdr(skb);

21
net/xfrm/xfrm_input.c
View File

@@ -353,17 +353,18 @@ xfrm_inner_mode_encap_remove(struct xfrm_state *x,
static int xfrm_prepare_input(struct xfrm_state *x, struct sk_buff *skb)
{
const struct xfrm_mode *inner_mode = &x->inner_mode;
const struct xfrm_state_afinfo *afinfo;
int err = -EAFNOSUPPORT;
rcu_read_lock();
afinfo = xfrm_state_afinfo_get_rcu(x->outer_mode.family);
if (likely(afinfo))
err = afinfo->extract_input(x, skb);
rcu_read_unlock();
if (err)
return err;
switch (x->outer_mode.family) {
case AF_INET:
xfrm4_extract_header(skb);
break;
case AF_INET6:
xfrm6_extract_header(skb);
break;
default:
WARN_ON_ONCE(1);
return -EAFNOSUPPORT;
}
if (x->sel.family == AF_UNSPEC) {
inner_mode = xfrm_ip2inner_mode(x, XFRM_MODE_SKB_CB(skb)->protocol);