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lib: guard checksum.h against multiple inclusion

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checksum.h was throwing errors if it ended up included twice.

Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
This commit is contained in:
David Lamparter 2022-02-26 12:02:10 +01:00
parent fe972cbfd4
commit 264c806da9
1 changed files with 5 additions and 0 deletions
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5
lib/checksum.h
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@ -1,3 +1,6 @@
#ifndef _FRR_CHECKSUM_H
#define _FRR_CHECKSUM_H
#include <stdint.h>
#include <netinet/in.h>
@ -35,3 +38,5 @@ extern uint16_t fletcher_checksum(uint8_t *, const size_t len,
#ifdef __cplusplus
}
#endif
#endif /* _FRR_CHECKSUM_H */