diff options
| author |   Florian Westphal <fw@strlen.de> | 2020-05-04 10:06:05 +0200 |
|---|---|---|
| committer |   Steffen Klassert <steffen.klassert@secunet.com> | 2020-05-06 09:40:08 +0200 |
| commit | 171916cbd53dec5c7b05efb56a201671d92effc1 (patch) | |
| tree | d4e2e497d945076a847c10b861653da590f75127 /net/xfrm | |
| parent | xfrm: state: remove extract_input indirection from xfrm_state_afinfo (diff) | |
| download | linux-dev-171916cbd53dec5c7b05efb56a201671d92effc1.tar.xz linux-dev-171916cbd53dec5c7b05efb56a201671d92effc1.zip | |
xfrm: move xfrm4_extract_header to common helper
The function only initializes the XFRM CB in the skb.
After previous patch xfrm4_extract_header is only called from
net/xfrm/xfrm_{input,output}.c.
Because of IPV6=m linker errors the ipv6 equivalent
(xfrm6_extract_header) was already placed in xfrm_inout.h because
we can't call functions residing in a module from the core.
So do the same for the ipv4 helper and place it next to the ipv6 one.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/xfrm')
| -rw-r--r-- | net/xfrm/xfrm_inout.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/net/xfrm/xfrm_inout.h b/net/xfrm/xfrm_inout.h index e24abac92dc2..efc5e6b2e87b 100644 --- a/net/xfrm/xfrm_inout.h +++ b/net/xfrm/xfrm_inout.h @@ -6,6 +6,20 @@ #ifndef XFRM_INOUT_H #define XFRM_INOUT_H 1 +static inline void 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)); +} + static inline void xfrm6_extract_header(struct sk_buff *skb) { #if IS_ENABLED(CONFIG_IPV6) |