diff --git a/doc/intel.rst b/doc/intel.rst index 50d1c836a..a169eaea2 100644 --- a/doc/intel.rst +++ b/doc/intel.rst @@ -9,8 +9,8 @@ ZC drivers for directly moving packets with DMA. On Intel usually everything works just out of the box. However, depending on the CPU, BIOS and kernel, it may happen to experience a similar issue on Intel CPUs. -The symptom consists of the application being unable to capture traffic or capture -empty packets. Example: +The symptom consists of the application being unable to capture traffic, capture +empty packets, or just being killed due to bad memory access. Examples: .. code-block:: console @@ -18,6 +18,11 @@ empty packets. Example: [RX][if_index=0][hash=4294967295][00:00:00:00:00:00 -> 00:00:00:00:00:00] [eth_type=0x0000] [caplen=1536][len=65531][eth_offset=0][l3_offset=14][l4_offset=0][payload_offset=0] [RX][if_index=0][hash=4294967295][00:00:00:00:00:00 -> 00:00:00:00:00:00] [eth_type=0x0000] [caplen=1536][len=65531][eth_offset=0][l3_offset=14][l4_offset=0][payload_offset=0] +.. code-block:: console + + # pfcount -i zc:enp179s0f0 -v 1 + Killed + It is also possible to verify this by looking at dmesg for IOMMU or DMAR related messages. Example: