xdp_frags_tsize field will be used to store paged frame
truesize for xdp_buff/xdp_frame. In order to not increase
skb_shared_info size we will use a hole due to skb_shared_info
alignment.
gso_type filed will be used to store paged frame size.
This is a preliminary patch to properly support xdp multi-buff
Signed-off-by: Lorenzo Bianconi <lorenzo@xxxxxxxxxx>
---
include/linux/skbuff.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index f19190820e63..0e345c5ccb4f 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -522,6 +522,7 @@ struct skb_shared_info {
unsigned short gso_segs;
struct sk_buff *frag_list;
struct skb_shared_hwtstamps hwtstamps;
+ /* used for xdp_{buff,frame} paged size */
unsigned int gso_type;
u32 tskey;
@@ -529,6 +530,7 @@ struct skb_shared_info {
* Warning : all fields before dataref are cleared in __alloc_skb()
*/
atomic_t dataref;
+ unsigned int xdp_frags_tsize;
/* Intermediate layers must ensure that destructor_arg
* remains valid until skb destructor */
--
2.31.1
