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seg6_iptunnel: Refactor seg6_lwt_headroom out of uapi header

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Refactor the function seg6_lwt_headroom out of the seg6_iptunnel.h uapi
header, because it is only used in seg6_iptunnel.c. Moreover, it is only
used in the kernel code, as indicated by the "#ifdef __KERNEL__".

Suggested-by: David Miller <davem@davemloft.net>
Signed-off-by: Ioana-Ruxandra Stăncioi <stancioi@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ioana-Ruxandra Stăncioi 2020-08-03 07:33:33 +00:00 committed by David S. Miller
parent 730e700e2c
commit 88fab21c69
2 changed files with 17 additions and 21 deletions
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21
include/uapi/linux/seg6_iptunnel.h
View File

@ -37,25 +37,4 @@ enum {
SEG6_IPTUN_MODE_L2ENCAP,
};
#ifdef __KERNEL__
static inline size_t seg6_lwt_headroom(struct seg6_iptunnel_encap *tuninfo)
{
int head = 0;
switch (tuninfo->mode) {
case SEG6_IPTUN_MODE_INLINE:
break;
case SEG6_IPTUN_MODE_ENCAP:
head = sizeof(struct ipv6hdr);
break;
case SEG6_IPTUN_MODE_L2ENCAP:
return 0;
}
return ((tuninfo->srh->hdrlen + 1) << 3) + head;
}
#endif
#endif

17
net/ipv6/seg6_iptunnel.c
View File

@ -27,6 +27,23 @@
#include <net/seg6_hmac.h>
#endif
static size_t seg6_lwt_headroom(struct seg6_iptunnel_encap *tuninfo)
{
int head = 0;
switch (tuninfo->mode) {
case SEG6_IPTUN_MODE_INLINE:
break;
case SEG6_IPTUN_MODE_ENCAP:
head = sizeof(struct ipv6hdr);
break;
case SEG6_IPTUN_MODE_L2ENCAP:
return 0;
}
return ((tuninfo->srh->hdrlen + 1) << 3) + head;
}
struct seg6_lwt {
struct dst_cache cache;
struct seg6_iptunnel_encap tuninfo[];