[PATCH v2] seg6_iptunnel: Refactor seg6_lwt_headroom out of uapi header

From: Ioana-Ruxandra Stancioi
Date: Fri Jul 31 2020 - 03:43:40 EST


From: Ioana-Ruxandra StÄncioi <stancioi@xxxxxxxxxx>

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@xxxxxxxxxxxxx>
Signed-off-by: Ioana-Ruxandra StÄncioi <stancioi@xxxxxxxxxx>
---
v2:
* Apply David's suggestion and just move the function.
---
include/uapi/linux/seg6_iptunnel.h | 21 ---------------------
net/ipv6/seg6_iptunnel.c | 17 +++++++++++++++++
2 files changed, 17 insertions(+), 21 deletions(-)

diff --git a/include/uapi/linux/seg6_iptunnel.h b/include/uapi/linux/seg6_iptunnel.h
index 09fb608a35ec..eb815e0d0ac3 100644
--- a/include/uapi/linux/seg6_iptunnel.h
+++ b/include/uapi/linux/seg6_iptunnel.h
@@ -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
diff --git a/net/ipv6/seg6_iptunnel.c b/net/ipv6/seg6_iptunnel.c
index e0e9f48ab14f..d8aa9fdc5819 100644
--- a/net/ipv6/seg6_iptunnel.c
+++ b/net/ipv6/seg6_iptunnel.c
@@ -27,6 +27,23 @@
#include <net/seg6_hmac.h>
#endif

+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;
+}
+
struct seg6_lwt {
struct dst_cache cache;
struct seg6_iptunnel_encap tuninfo[];
--
2.28.0.163.g6104cc2f0b6-goog