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net: skbuff.h: Mark expected switch fall-throughs 

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Gustavo A. R. Silva 2018-10-17 15:01:37 +02:00 committed by David S. Miller
parent 9fd255928d
commit 82385b0d2d
1 changed files with 6 additions and 0 deletions
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6
include/linux/skbuff.h
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@ -3505,13 +3505,19 @@ static inline bool __skb_metadata_differs(const struct sk_buff *skb_a,
#define __it(x, op) (x -= sizeof(u##op)) #define __it(x, op) (x -= sizeof(u##op))
#define __it_diff(a, b, op) (*(u##op *)__it(a, op)) ^ (*(u##op *)__it(b, op)) #define __it_diff(a, b, op) (*(u##op *)__it(a, op)) ^ (*(u##op *)__it(b, op))
case 32: diffs |= __it_diff(a, b, 64); case 32: diffs |= __it_diff(a, b, 64);
/* fall through */
case 24: diffs |= __it_diff(a, b, 64); case 24: diffs |= __it_diff(a, b, 64);
/* fall through */
case 16: diffs |= __it_diff(a, b, 64); case 16: diffs |= __it_diff(a, b, 64);
/* fall through */
case 8: diffs |= __it_diff(a, b, 64); case 8: diffs |= __it_diff(a, b, 64);
break; break;
case 28: diffs |= __it_diff(a, b, 64); case 28: diffs |= __it_diff(a, b, 64);
/* fall through */
case 20: diffs |= __it_diff(a, b, 64); case 20: diffs |= __it_diff(a, b, 64);
/* fall through */
case 12: diffs |= __it_diff(a, b, 64); case 12: diffs |= __it_diff(a, b, 64);
/* fall through */
case 4: diffs |= __it_diff(a, b, 32); case 4: diffs |= __it_diff(a, b, 32);
break; break;
} }