[Qemu-devel] [PATCH] ether/slirp: Avoid redefinition of the same constants

["Dr. David Alan Gilbert (git)" <dgilbert@redhat.com>]

From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>

eth.h and slirp.h both define ETH_ALEN and ETH_P_IP
rtl8139.c and eth.h both define ETH_HLEN

Move the related constant (ETH_P_ARP) from slirp.h to eth.h, and
remove the duplicates; make slirp.h include eth.h

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
---
 hw/net/rtl8139.c  | 1 -
 include/net/eth.h | 4 +++-
 slirp/slirp.h     | 7 +------
 3 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/hw/net/rtl8139.c b/hw/net/rtl8139.c
index 68e43f3..d192d57 100644
--- a/hw/net/rtl8139.c
+++ b/hw/net/rtl8139.c
@@ -74,7 +74,6 @@
     ( ( input ) & ( size - 1 )  )
 
 #define ETHER_TYPE_LEN 2
-#define ETH_HLEN (ETH_ALEN * 2 + ETHER_TYPE_LEN)
 #define ETH_MTU     1500
 
 #define VLAN_TCI_LEN 2
diff --git a/include/net/eth.h b/include/net/eth.h
index b3273b8..84384fe 100644
--- a/include/net/eth.h
+++ b/include/net/eth.h
@@ -32,6 +32,7 @@
 #include "qemu/iov.h"
 
 #define ETH_ALEN 6
+#define ETH_HLEN 14
 
 struct eth_header {
     uint8_t  h_dest[ETH_ALEN];   /* destination eth addr */
@@ -170,7 +171,8 @@ struct tcp_hdr {
 #define IP_HEADER_VERSION(ip)     \
     ((ip->ip_ver_len >> 4)&0xf)
 
-#define ETH_P_IP                  (0x0800)
+#define ETH_P_IP                  (0x0800)      /* Internet Protocol packet  */
+#define ETH_P_ARP                 (0x0806)      /* Address Resolution packet */
 #define ETH_P_IPV6                (0x86dd)
 #define ETH_P_VLAN                (0x8100)
 #define ETH_P_DVLAN               (0x88a8)
diff --git a/slirp/slirp.h b/slirp/slirp.h
index 6589d7e..ec0a4c2 100644
--- a/slirp/slirp.h
+++ b/slirp/slirp.h
@@ -135,6 +135,7 @@ void free(void *ptr);
 
 #include "qemu/queue.h"
 #include "qemu/sockets.h"
+#include "net/eth.h"
 
 #include "libslirp.h"
 #include "ip.h"
@@ -158,12 +159,6 @@ void free(void *ptr);
 #include "bootp.h"
 #include "tftp.h"
 
-#define ETH_ALEN 6
-#define ETH_HLEN 14
-
-#define ETH_P_IP  0x0800        /* Internet Protocol packet  */
-#define ETH_P_ARP 0x0806        /* Address Resolution packet */
-
 #define ARPOP_REQUEST 1         /* ARP request */
 #define ARPOP_REPLY   2         /* ARP reply   */
 
-- 
2.5.0