[dpdk-dev] [PATCH 7/7] eal/mem: use DMA mask check for legacy memory

[Alejandro Lucero]

If a device reports addressing limitations through a dma mask,
the IOVAs for mapped memory needs to be checked out for ensuring
correct functionality.

Previous patches introduced this DMA check for main memory code
currently being used but other options like legacy memory and the
no hugepages one need to be also considered.

This patch adds the DMA check for those cases.

Signed-off-by: Alejandro Lucero <alejandro.luc...@netronome.com>
---
 lib/librte_eal/linuxapp/eal/eal_memory.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/lib/librte_eal/linuxapp/eal/eal_memory.c 
b/lib/librte_eal/linuxapp/eal/eal_memory.c
index fce86fda6..2a3a8c7a3 100644
--- a/lib/librte_eal/linuxapp/eal/eal_memory.c
+++ b/lib/librte_eal/linuxapp/eal/eal_memory.c
@@ -1393,6 +1393,14 @@ eal_legacy_hugepage_init(void)
 
                        addr = RTE_PTR_ADD(addr, (size_t)page_sz);
                }
+               if (mcfg->dma_maskbits) {
+                       if (rte_mem_check_dma_mask_unsafe(mcfg->dma_maskbits)) {
+                               RTE_LOG(ERR, EAL,
+                                       "%s(): couldn't allocate memory due to 
DMA mask\n",
+                                       __func__);
+                               goto fail;
+                       }
+               }
                return 0;
        }
 
@@ -1628,6 +1636,15 @@ eal_legacy_hugepage_init(void)
                rte_fbarray_destroy(&msl->memseg_arr);
        }
 
+       if (mcfg->dma_maskbits) {
+               if (rte_mem_check_dma_mask_unsafe(mcfg->dma_maskbits)) {
+                       RTE_LOG(ERR, EAL,
+                               "%s(): couldn't allocate memory due to DMA 
mask\n",
+                               __func__);
+                       goto fail;
+               }
+       }
+
        return 0;
 
 fail:
-- 
2.17.1