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| author | Peter Crosthwaite <peter.crosthwaite@xilinx.com> | 2013-12-03 21:59:43 -0800 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2013-12-10 13:28:50 +0000 |
| commit | 305706980267dae191d0fca2c769d7a31011be14 (patch) | |
| tree | 2594ecd4cc67161d8c66754fcf90b0305b0d9514 /hw | |
| parent | 17cf2c76b684b679cb25fcb4a36d536ba9944d4d (diff) | |
| download | qemu-305706980267dae191d0fca2c769d7a31011be14.zip qemu-305706980267dae191d0fca2c769d7a31011be14.tar.gz qemu-305706980267dae191d0fca2c769d7a31011be14.tar.bz2 | |
net/cadence_gem: Fix rx multi-fragment packets
Bytes_to_copy was being updated before its final use where it
advances the rx buffer pointer. This was causing total mayhem,
where packet data for any subsequent fragments was being fetched
from the wrong place.
Reported-by: Deepika Dhamija <deepika@xilinx.com>
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: c2a1c65c1fd06eb274442a0fa4a6839d940e145e.1386136219.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/net/cadence_gem.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/hw/net/cadence_gem.c b/hw/net/cadence_gem.c index 8cfad04..2afafdf 100644 --- a/hw/net/cadence_gem.c +++ b/hw/net/cadence_gem.c @@ -733,8 +733,8 @@ static ssize_t gem_receive(NetClientState *nc, const uint8_t *buf, size_t size) /* Copy packet data to emulated DMA buffer */ cpu_physical_memory_write(rx_desc_get_buffer(s->rx_desc) + rxbuf_offset, rxbuf_ptr, MIN(bytes_to_copy, rxbufsize)); - bytes_to_copy -= MIN(bytes_to_copy, rxbufsize); rxbuf_ptr += MIN(bytes_to_copy, rxbufsize); + bytes_to_copy -= MIN(bytes_to_copy, rxbufsize); /* Update the descriptor. */ if (first_desc) { |