X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=qemu%2Fhw%2Fnet%2Fne2000.c;fp=qemu%2Fhw%2Fnet%2Fne2000.c;h=f0feaf96b0d8ef3768f7325ad9197205451536d6;hb=437fd90c0250dee670290f9b714253671a990160;hp=2bdb4c9275b581848716541a1f0518534a7901cb;hpb=5bbd6fe9b8bab2a93e548c5a53b032d1939eec05;p=kvmfornfv.git

diff --git a/qemu/hw/net/ne2000.c b/qemu/hw/net/ne2000.c
index 2bdb4c927..f0feaf96b 100644
--- a/qemu/hw/net/ne2000.c
+++ b/qemu/hw/net/ne2000.c
@@ -21,6 +21,7 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
+#include "qemu/osdep.h"
 #include "hw/hw.h"
 #include "hw/pci/pci.h"
 #include "net/net.h"
@@ -154,6 +155,10 @@ static int ne2000_buffer_full(NE2000State *s)
 {
     int avail, index, boundary;
 
+    if (s->stop <= s->start) {
+        return 1;
+    }
+
     index = s->curpag << 8;
     boundary = s->boundary << 8;
     if (index < boundary)
@@ -165,15 +170,6 @@ static int ne2000_buffer_full(NE2000State *s)
     return 0;
 }
 
-int ne2000_can_receive(NetClientState *nc)
-{
-    NE2000State *s = qemu_get_nic_opaque(nc);
-
-    if (s->cmd & E8390_STOP)
-        return 1;
-    return !ne2000_buffer_full(s);
-}
-
 #define MIN_BUF_SIZE 60
 
 ssize_t ne2000_receive(NetClientState *nc, const uint8_t *buf, size_t size_)
@@ -476,8 +472,9 @@ static inline void ne2000_mem_writel(NE2000State *s, uint32_t addr,
                                      uint32_t val)
 {
     addr &= ~1; /* XXX: check exact behaviour if not even */
-    if (addr < 32 ||
-        (addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
+    if (addr < 32
+        || (addr >= NE2000_PMEM_START
+            && addr + sizeof(uint32_t) <= NE2000_MEM_SIZE)) {
         stl_le_p(s->mem + addr, val);
     }
 }
@@ -506,8 +503,9 @@ static inline uint32_t ne2000_mem_readw(NE2000State *s, uint32_t addr)
 static inline uint32_t ne2000_mem_readl(NE2000State *s, uint32_t addr)
 {
     addr &= ~1; /* XXX: check exact behaviour if not even */
-    if (addr < 32 ||
-        (addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
+    if (addr < 32
+        || (addr >= NE2000_PMEM_START
+            && addr + sizeof(uint32_t) <= NE2000_MEM_SIZE)) {
         return ldl_le_p(s->mem + addr);
     } else {
         return 0xffffffff;
@@ -716,7 +714,6 @@ void ne2000_setup_io(NE2000State *s, DeviceState *dev, unsigned size)
 static NetClientInfo net_ne2000_info = {
     .type = NET_CLIENT_OPTIONS_KIND_NIC,
     .size = sizeof(NICState),
-    .can_receive = ne2000_can_receive,
     .receive = ne2000_receive,
 };