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dp8393x: Don't clobber packet checksum

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A received packet consumes pkt_size bytes in the buffer and the frame
checksum that's appended to it consumes another 4 bytes. The Receive
Buffer Address register takes the former quantity into account but
not the latter. So the next packet written to the buffer overwrites
the frame checksum. Fix this.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Finn Thain 2020-01-29 20:27:49 +11:00 committed by Jason Wang
parent ada7431527
commit bae112b80c
1 changed files with 1 additions and 0 deletions
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1
hw/net/dp8393x.c
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@ -818,6 +818,7 @@ static ssize_t dp8393x_receive(NetClientState *nc, const uint8_t * buf,
address += rx_len;
address_space_write(&s->as, address, MEMTXATTRS_UNSPECIFIED,
&checksum, 4);
address += 4;
rx_len += 4;
s->regs[SONIC_CRBA1] = address >> 16;
s->regs[SONIC_CRBA0] = address & 0xffff;