[Qemu-devel] [PATCH v1 1/3] xilinx_ethlite: fix eth_can_rx() for ping-pong

[Peter Crosthwaite]

The eth_can_rx() function only checks the first buffers status ("ping"). The
controller should be able to receive into "pong" when ping-pong is enabled.
Checks the active buffer (either "ping" or "pong") when determining can_rx()
rather than just testing "ping".

Signed-off-by: Peter Crosthwaite <address@hidden>
---
 hw/xilinx_ethlite.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/hw/xilinx_ethlite.c b/hw/xilinx_ethlite.c
index 2254851..972b85e 100644
--- a/hw/xilinx_ethlite.c
+++ b/hw/xilinx_ethlite.c
@@ -163,9 +163,9 @@ static const MemoryRegionOps eth_ops = {
 static int eth_can_rx(NetClientState *nc)
 {
     struct xlx_ethlite *s = DO_UPCAST(NICState, nc, nc)->opaque;
-    int r;
-    r = !(s->regs[R_RX_CTRL0] & CTRL_S);
-    return r;
+    unsigned int rxbase = s->rxbuf * (0x800 / 4);
+
+    return !(s->regs[rxbase + R_RX_CTRL0] & CTRL_S);
 }
 
 static ssize_t eth_rx(NetClientState *nc, const uint8_t *buf, size_t size)
-- 
1.7.12.1.396.g16eed7c