Convert the data parameter of net_checksum_calculate() to void * to
save unnecessary casts for callers.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
---
 include/net/checksum.h | 2 +-
 net/checksum.c         | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/net/checksum.h b/include/net/checksum.h
index 7dec37e56c78..188e4cca0b7f 100644
--- a/include/net/checksum.h
+++ b/include/net/checksum.h
@@ -30,7 +30,7 @@ uint32_t net_checksum_add_cont(int len, uint8_t *buf, int seq);
 uint16_t net_checksum_finish(uint32_t sum);
 uint16_t net_checksum_tcpudp(uint16_t length, uint16_t proto,
                              uint8_t *addrs, uint8_t *buf);
-void net_checksum_calculate(uint8_t *data, int length, int csum_flag);
+void net_checksum_calculate(void *data, int length, int csum_flag);
 
 static inline uint32_t
 net_checksum_add(int len, uint8_t *buf)
diff --git a/net/checksum.c b/net/checksum.c
index 1a957e4c0b10..537457d89d07 100644
--- a/net/checksum.c
+++ b/net/checksum.c
@@ -57,7 +57,7 @@ uint16_t net_checksum_tcpudp(uint16_t length, uint16_t proto,
     return net_checksum_finish(sum);
 }
 
-void net_checksum_calculate(uint8_t *data, int length, int csum_flag)
+void net_checksum_calculate(void *data, int length, int csum_flag)
 {
     int mac_hdr_len, ip_len;
     struct ip_header *ip;
@@ -101,7 +101,7 @@ void net_checksum_calculate(uint8_t *data, int length, int csum_flag)
         return;
     }
 
-    ip = (struct ip_header *)(data + mac_hdr_len);
+    ip = (struct ip_header *)((uint8_t *)data + mac_hdr_len);
 
     if (IP_HEADER_VERSION(ip) != IP_HEADER_VERSION_4) {
         return; /* not IPv4 */

-- 
2.46.0