net: skb: Remove skb_data_area_size()
authorRicardo Martinez <ricardo.martinez@linux.intel.com>
Fri, 13 May 2022 17:34:00 +0000 (10:34 -0700)
committerJakub Kicinski <kuba@kernel.org>
Mon, 16 May 2022 20:45:36 +0000 (13:45 -0700)
skb_data_area_size() is not needed. As Jakub pointed out [1]:
For Rx, drivers can use the size passed during skb allocation or
use skb_tailroom().
For Tx, drivers should use skb_headlen().

[1] https://lore.kernel.org/netdev/CAHNKnsTmH-rGgWi3jtyC=ktM1DW2W1VJkYoTMJV2Z_Bt498bsg@mail.gmail.com/

Signed-off-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
include/linux/skbuff.h

index 5a2b29df6cab925e5994159f92930d9861112d8c..da96f0d3e753fb7996631bc9350c0c8e0ec5966e 100644 (file)
@@ -1765,11 +1765,6 @@ static inline void skb_set_end_offset(struct sk_buff *skb, unsigned int offset)
 }
 #endif
 
-static inline unsigned int skb_data_area_size(struct sk_buff *skb)
-{
-       return skb_end_pointer(skb) - skb->data;
-}
-
 struct ubuf_info *msg_zerocopy_realloc(struct sock *sk, size_t size,
                                       struct ubuf_info *uarg);