[PATCH net-next] net: dsa: Remove unused __DSA_SKB_CB macro

[PATCH net-next] net: dsa: Remove unused __DSA_SKB_CB macro

[Vladimir Oltean]

The struct __dsa_skb_cb is supposed to span the entire 48-byte skb
control block, while the struct dsa_skb_cb only the portion of it which
is used by the DSA core (the rest is available as private data to
drivers).

The DSA_SKB_CB and __DSA_SKB_CB helpers are supposed to help retrieve
this pointer based on a skb, but it turns out there is nobody directly
interested in the struct __dsa_skb_cb in the kernel. So remove it.

Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
---
 include/net/dsa.h | 2 --
 1 file changed, 2 deletions(-)

diff --git a/include/net/dsa.h b/include/net/dsa.h
index 541fb514e31d..8c3ea0530f65 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -94,8 +94,6 @@ struct __dsa_skb_cb {
 	u8 priv[48 - sizeof(struct dsa_skb_cb)];
 };
 
-#define __DSA_SKB_CB(skb) ((struct __dsa_skb_cb *)((skb)->cb))
-
 #define DSA_SKB_CB(skb) ((struct dsa_skb_cb *)((skb)->cb))
 
 #define DSA_SKB_CB_PRIV(skb)			\
-- 
2.17.1

Re: [PATCH net-next] net: dsa: Remove unused __DSA_SKB_CB macro

[David Miller]

From: Vladimir Oltean <olteanv@gmail.com>
Date: Tue,  1 Oct 2019 22:12:50 +0300

> The struct __dsa_skb_cb is supposed to span the entire 48-byte skb
> control block, while the struct dsa_skb_cb only the portion of it which
> is used by the DSA core (the rest is available as private data to
> drivers).
> 
> The DSA_SKB_CB and __DSA_SKB_CB helpers are supposed to help retrieve
> this pointer based on a skb, but it turns out there is nobody directly
> interested in the struct __dsa_skb_cb in the kernel. So remove it.
> 
> Signed-off-by: Vladimir Oltean <olteanv@gmail.com>

Applied.