do_cpu_mem_copy uses DPDK API rte_mbuf_data_iova to return
the start of the virtual address for both src and dst.
But in case of iova mode set as PA, this results in seg-fault.
This is because rte_memcpy uses VA address and not PA.
This fix invokes `rte_pktmbuf_mtod` for both src and dst.
Bugzilla ID: 1269
Fixes: 623dc9364dc6 ("app/dma-perf: introduce DMA performance test")
Cc: cheng1.ji...@intel.com
Cc: sta...@dpdk.org
Signed-off-by: Vipin Varghese <vipin.vargh...@amd.com>
Suggested-by: Anoob Joseph <ano...@marvell.com>
Suggested-by: Jerin Jacob <jer...@marvell.com>
---
v2:
- suggest use of pktmbuf_mtod for both va and pa by Anoob.
V3:
- add const to src suggested by Jerin.
---
app/test-dma-perf/benchmark.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/app/test-dma-perf/benchmark.c b/app/test-dma-perf/benchmark.c
index 0601e0d171..9b1f58c78c 100644
--- a/app/test-dma-perf/benchmark.c
+++ b/app/test-dma-perf/benchmark.c
@@ -288,10 +288,11 @@ do_cpu_mem_copy(void *p)
while (1) {
for (i = 0; i < nr_buf; i++) {
+ const void *src = rte_pktmbuf_mtod(dsts[i], void *);
+ void *dst = rte_pktmbuf_mtod(srcs[i], void *);
+
/* copy buffer form src to dst */
- rte_memcpy((void
*)(uintptr_t)rte_mbuf_data_iova(dsts[i]),
- (void *)(uintptr_t)rte_mbuf_data_iova(srcs[i]),
- (size_t)buf_size);
+ rte_memcpy(dst, src, (size_t)buf_size);
worker_info->total_cpl++;
}
if (worker_info->stop_flag)
--
2.34.1
