The checksum calculation header exports a function that refers to struct iov defined in iov.h. Without including the former, build fails like this:
In file included from hw/net/fsl_etsec/rings.c:24:0: include/net/checksum.h:51:31: error: ‘struct iovec’ declared inside parameter list [-Werror] include/net/checksum.h:51:31: error: its scope is only this definition or declaration, which is probably not what you want [-Werror] Mention struct iovec there. Reported-by: Alexander Graf <ag...@suse.de> Signed-off-by: Michael Tokarev <m...@tls.msk.ru> --- include/net/checksum.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/net/checksum.h b/include/net/checksum.h index 80203fb..2d7a363 100644 --- a/include/net/checksum.h +++ b/include/net/checksum.h @@ -19,6 +19,7 @@ #define QEMU_NET_CHECKSUM_H #include <stdint.h> +struct iovec; uint32_t net_checksum_add_cont(int len, uint8_t *buf, int seq); uint16_t net_checksum_finish(uint32_t sum); -- 1.7.10.4