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ftgmac100: compute maximum frame size depending on the protocol

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The maximum frame size includes the CRC and depends if a VLAN tag is
inserted or not. Adjust the frame size limit in the transmit handler
using on the FTGMAC100State buffer size and in the receive handler use
the packet protocol.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180530061711.23673-2-clg@kaod.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Cédric Le Goater 2018-06-08 13:15:32 +01:00 • committed by Peter Maydell
parent 8c9a61d7e0
commit cd679a76a0
2 changed files with 18 additions and 12 deletions
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7
include/hw/net/ftgmac100.h
View file

@ -16,6 +16,11 @@
#include "hw/sysbus.h"
#include "net/net.h"
/*
* Max frame size for the receiving buffer
*/
#define FTGMAC100_MAX_FRAME_SIZE 9220
typedef struct FTGMAC100State {
/*< private >*/
SysBusDevice parent_obj;
@ -26,7 +31,7 @@ typedef struct FTGMAC100State {
qemu_irq irq;
MemoryRegion iomem;
uint8_t *frame;
uint8_t frame[FTGMAC100_MAX_FRAME_SIZE];
uint32_t irq_state;
uint32_t isr;