Commit f4700a62 authored by Niklas Söderlund's avatar Niklas Söderlund Committed by Andrii Nakryiko
Browse files

samples/bpf: xdpsock: Remove forward declaration of ip_fast_csum() 



There is a forward declaration of ip_fast_csum() just before its
implementation, remove the unneeded forward declaration.

While at it mark the implementation as static inline.

Signed-off-by: default avatarNiklas Söderlund <niklas.soderlund@corigine.com>
Signed-off-by: default avatarSimon Horman <simon.horman@corigine.com>
Signed-off-by: default avatarAndrii Nakryiko <andrii@kernel.org>
Reviewed-by: default avatarLouis Peens <louis.peens@corigine.com>
Link: https://lore.kernel.org/bpf/20210806122855.26115-3-simon.horman@corigine.com
parent 29f24c43

samples/bpf/xdpsock_user.c

+1 −3
Original line number Diff line number Diff line
@@ -651,15 +651,13 @@ static unsigned int do_csum(const unsigned char *buff, int len) 
	return result;

}



__sum16 ip_fast_csum(const void *iph, unsigned int ihl);



/*

 *	This is a version of ip_compute_csum() optimized for IP headers,

 *	which always checksum on 4 octet boundaries.

 *	This function code has been taken from

 *	Linux kernel lib/checksum.c

 */

__sum16 ip_fast_csum(const void *iph, unsigned int ihl)

static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl)

{

	return (__sum16)~do_csum(iph, ihl * 4);

}