Currently the example using DMA in asynchronous mode, which are:
nb_rx = rte_eth_rx_burst();
if (nb_rx == 0)
continue;
...
dma_enqueue(); // enqueue the received packets copy request
nb_cpl = dma_dequeue(); // get copy completed packets
...
There are no waiting inside dma_dequeue(), and this is why it's called
asynchronus. If there are no packet received, it won't call
dma_dequeue(), but some packets may still in the DMA queue which
enqueued in last cycle. As a result, when the traffic is stopped, the
sent packets and received packets are unbalanced from the perspective
of the traffic generator.
The patch supports DMA dequeue when no packet received, it helps to
judge the test result by comparing the sent packets with the received
packets on traffic generator sides.
Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Kevin Laatz <kevin.laatz@intel.com>
Do not include <ctype.h>, <errno.h>, and <stdlib.h> from <rte_common.h>,
because they are not used by this file.
Include the needed headers directly from the files that need them.
Signed-off-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
This patch adds force minimal copy size parameter
(-m/--force-min-copy-size), so when do copy by CPU or DMA, the real copy
size will be the maximum of mbuf's data_len and this parameter.
This parameter was designed to compare the performance between CPU copy
and DMA copy. User could send small packets with a high rate to drive
the performance test.
Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Kevin Laatz <kevin.laatz@intel.com>
The Tx drop statistic was designed to be collected by
rte_eth_dev_tx_buffer mechanism, but the application uses
rte_eth_tx_burst to send packets and this lead the Tx drop statistic
was not collected.
This patch removes rte_eth_dev_tx_buffer mechanism to fix the problem.
Fixes: 632bcd9b5d ("examples/ioat: print statistics")
Cc: stable@dpdk.org
Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Kevin Laatz <kevin.laatz@intel.com>
The MTU in dma App can be configured by 'max_frame_size' parameters which
have a default value(1518). It's not reasonable to use it directly as MTU.
This patch fix it.
Fixes: 1bb4a528c4 ("ethdev: fix max Rx packet length")
Cc: stable@dpdk.org
Signed-off-by: Huisong Li <lihuisong@huawei.com>
Since the APIs have been updated from rawdev to dmadev, the application
should also be renamed to match. This patch also includes the documentation
updates for the renaming.
Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
Reviewed-by: Conor Walsh <conor.walsh@intel.com>
